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Removes Cogl from the repository

Browse Source 
Cogl has now been split out into a standalone project with a separate
repository at git://git.gnome.org/cogl. From now on the Clutter build
will now simply look for a cogl-1.0 pkg-config file to find a suitable
Cogl library to link against at build time.
This commit is contained in:
Robert Bragg 2011-05-05 20:56:44 +01:00
parent 00f2a39ac5
commit 223e14811c
277 changed files with 24 additions and 89248 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
.gitignore vendored
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@ -22,15 +22,8 @@ stamp-marshal
/clutter/clutter-version.h
/clutter/gcov-report.txt
/clutter/clutter-json.h
/clutter/cogl/cogl/cogl-defines.h
/clutter/cogl/cogl/cogl-enum-types.[ch]
/clutter/cogl/cogl/driver/gl/cogl-defines.h
/clutter/cogl/cogl/driver/gles/cogl-defines.h
/clutter/cogl/cogl/cogl-fixed-vertex-shader.[ch]
/clutter/cogl/cogl/cogl-fixed-fragment-shader.[ch]
/clutter/egl/clutter-cex100.h
/build/autotools/*.m4
/clutter/cogl/build/autotools/*.m4
!/build/autotools/introspection.m4
!/build/autotools/as-linguas.m4
!/build/autotools/as-compiler-flag.m4
@ -61,32 +54,6 @@ doc/reference/clutter/clutter.signals
doc/reference/clutter/clutter-docs.xml
doc/reference/clutter/*.stamp
doc/reference/clutter/*.bak
doc/reference/cogl/cogl-*.txt
!/doc/reference/cogl/cogl-sections.txt
doc/reference/cogl/html
doc/reference/cogl/tmpl
doc/reference/cogl/xml
doc/reference/cogl/cogl.args
doc/reference/cogl/cogl.hierarchy
doc/reference/cogl/cogl.interfaces
doc/reference/cogl/cogl.prerequisites
doc/reference/cogl/cogl.signals
doc/reference/cogl/cogl-docs.xml
doc/reference/cogl/*.stamp
doc/reference/cogl/*.bak
doc/reference/cogl-2.0/cogl-*.txt
!/doc/reference/cogl-2.0/cogl-sections.txt
doc/reference/cogl-2.0/html
doc/reference/cogl-2.0/tmpl
doc/reference/cogl-2.0/xml
doc/reference/cogl-2.0/cogl.args
doc/reference/cogl-2.0/cogl.hierarchy
doc/reference/cogl-2.0/cogl.interfaces
doc/reference/cogl-2.0/cogl.prerequisites
doc/reference/cogl-2.0/cogl.signals
doc/reference/cogl-2.0/cogl-docs.xml
doc/reference/cogl-2.0/*.stamp
doc/reference/cogl-2.0/*.bak
doc/reference/cally/cally-*.txt
!/doc/reference/cally/cally-sections.txt
doc/reference/cally/html
@ -124,19 +91,6 @@ TAGS
/po/remove-potcdate.sin
/po/remove-potcdate.sed
/po/stamp-po
/clutter/cogl/po/POTFILES
/clutter/cogl/po/*.gmo
/clutter/cogl/po/Makefile.in.in
/clutter/cogl/po/Makevars.template
/clutter/cogl/po/Rules-quot
/clutter/cogl/po/boldquot.sed
/clutter/cogl/po/en@boldquot.header
/clutter/cogl/po/en@quot.header
/clutter/cogl/po/insert-header.sin
/clutter/cogl/po/quot.sed
/clutter/cogl/po/remove-potcdate.sin
/clutter/cogl/po/remove-potcdate.sed
/clutter/cogl/po/stamp-po
*.swn
*.swo
*.swp

35
README.in
View File

@ -10,12 +10,11 @@ REQUIREMENTS
Clutter currently requires:
• GLib ≥ @GLIB_REQ_VERSION@
• Cogl ≥ @COGL_REQ_VERSION@
• JSON-GLib ≥ @JSON_GLIB_REQ_VERSION@
• Atk ≥ @ATK_REQ_VERSION@
• Cairo ≥ @CAIRO_REQ_VERSION@
• PangoCairo ≥ @PANGO_REQ_VERSION@
• OpenGL ≥ 1.3 (or 1.2 + multitexturing), or OpenGL ES 2.0 (or 1.1)
• GLX, AGL, WGL or an EGL implementation
Clutter also has optional dependencies:
@ -137,21 +136,6 @@ Clutter has additional command line options for the configure script:
debugging notes. Only use in extreme performance and/or size
optimization cases, though it is strongly discouraged.
--enable-cogl-debug=[no/minimum/yes]
Controls COGL debugging level (default=minimum):
yes:
Support for COGL debugging notes through COGL_DEBUG and
error checking for each GL primitive. This is useful mostly
to debug COGL itself.
minimum:
Support for COGL debugging notes through COGL_DEBUG. This is
the default for developers snapshots.
no:
Disable support for COGL runtime debugging notes.
--enable-maintainer-flags=[no/yes/error]
Use strict compiler flags. This defaults to 'yes' for building from
Git to 'no' for tarball releases. If 'error' is used, then -Werror
@ -209,23 +193,6 @@ Clutter has additional command line options for the configure script:
win32:
Microsoft Windows(tm) WGL backend.
--with-imagebackend=[gdk-pixbuf/quartz/internal]
Select the image loading backend used by COGL
gdk-pixbuf:
Depend on gdk-pixbuf-2.0 (default for the glx, eglx,
eglnative, win32 flavours and recommended).
quartz:
Depend on CoreGraphics (default for the osx flavour).
internal:
Internal JPEG and PNG loader. Should only be used
for testing on new platforms
--with-gles=[1.1/2.0]
Select the GLES version (for EGL backends) (default=1.1)
See also the INSTALL file generated by autotools for further information.
VERSIONING

73
clutter/Makefile.am
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@ -3,11 +3,6 @@ include $(top_srcdir)/build/autotools/Makefile.am.silent
# preamble
NULL =
# we recurse only into Cogl
if !USE_SYSTEM_COGL
SUBDIRS = cogl
endif
# common definitions
CLEANFILES =
DISTCLEANFILES =
@ -27,14 +22,6 @@ INCLUDES = \
-I$(top_builddir)/clutter \
$(NULL)
if !USE_SYSTEM_COGL
INCLUDES += \
-I$(top_srcdir)/clutter/cogl \
-I$(top_srcdir)/clutter/cogl/pango \
-I$(top_builddir)/clutter/cogl \
$(NULL)
endif
AM_CPPFLAGS = \
-DCLUTTER_PREFIX=\""$(prefix)"\" \
-DCLUTTER_LIBDIR=\""$(libdir)"\" \
@ -633,15 +620,6 @@ libclutter_@CLUTTER_SONAME_INFIX@_@CLUTTER_API_VERSION@_la_LIBADD = \
libclutter_@CLUTTER_SONAME_INFIX@_@CLUTTER_API_VERSION@_la_DEPENDENCIES = \
$(win32_resources)
if !USE_SYSTEM_COGL
libclutter_@CLUTTER_SONAME_INFIX@_@CLUTTER_API_VERSION@_la_LIBADD += \
$(top_builddir)/clutter/cogl/cogl/libcogl.la \
$(top_builddir)/clutter/cogl/pango/libcoglpango.la
libclutter_@CLUTTER_SONAME_INFIX@_@CLUTTER_API_VERSION@_la_DEPENDENCIES += \
$(top_builddir)/clutter/cogl/cogl/libcogl.la \
$(top_builddir)/clutter/cogl/pango/libcoglpango.la
endif
libclutter_@CLUTTER_SONAME_INFIX@_@CLUTTER_API_VERSION@_la_SOURCES = \
$(backend_source_c) \
$(backend_source_h) \
@ -666,7 +644,7 @@ libclutter_@CLUTTER_SONAME_INFIX@_@CLUTTER_API_VERSION@_la_LDFLAGS = \
$(CLUTTER_LT_LDFLAGS) \
$(GCOV_LDFLAGS) \
-export-dynamic \
-export-symbols-regex "^(clutter|cogl|cally).*" \
-export-symbols-regex "^(clutter|cally).*" \
-rpath $(libdir) \
$(win32_resources_ldflag) \
$(NULL)
@ -689,36 +667,9 @@ Clutter_@CLUTTER_API_VERSION_AM@_gir_SCANNERFLAGS = \
--warn-all \
--c-include='clutter/clutter.h' \
--pkg-export=clutter-@CLUTTER_API_VERSION@
if USE_SYSTEM_COGL
Clutter_@CLUTTER_API_VERSION_AM@_gir_INCLUDES += Cogl-1.0
else
Clutter_@CLUTTER_API_VERSION_AM@_gir_LIBS += \
$(top_builddir)/clutter/cogl/cogl/libcogl.la \
$(top_builddir)/clutter/cogl/pango/libcoglpango.la
Clutter_@CLUTTER_API_VERSION_AM@_gir_SCANNERFLAGS += \
--include-uninstalled=$(top_builddir)/clutter/cogl/cogl/Cogl-1.0.gir
COGL_GIR_DEP=Cogl-1.0.gir
endif
if !USE_SYSTEM_COGL
# Cogl.gir is used included into Clutter.gir, so it needs to be built
# before the typelib is generated
Clutter-@CLUTTER_API_VERSION@.typelib: Cogl-1.0.gir
# We build Cogl.gir in the cogl/ subdir, but it needs to reference the shared
# library that it's built into, so we delay compiling the gir into typelib
# until after we've built the shared library. To create the final Cogl.gir
# that we compile and install, we transfer the shared-library="" line from
# Clutter.gir to Cogl.gir
Cogl-1.0.gir: Makefile Clutter-@CLUTTER_API_VERSION@.gir cogl/cogl/Cogl-1.0.gir
$(QUIET_GEN) \
shlib=`sed -n 's/.*shared-library="\([^"]*\)".*/\1/p' < Clutter-@CLUTTER_API_VERSION@.gir` ; \
sed "s/shared-library=\"[^\"]*\"/shared-library=\"$$shlib\"/"< $(top_builddir)/clutter/cogl/cogl/Cogl-1.0.gir > $@
BUILT_GIRSOURCES += Cogl-1.0.gir
endif
Cally-@CLUTTER_API_VERSION@.gir: Makefile Clutter-@CLUTTER_API_VERSION@.gir $(COGL_GIR_DEP)
Cally-@CLUTTER_API_VERSION@.gir: Makefile Clutter-@CLUTTER_API_VERSION@.gir
Cally_@CLUTTER_API_VERSION_AM@_gir_NAMESPACE = Cally
Cally_@CLUTTER_API_VERSION_AM@_gir_VERSION = @CLUTTER_API_VERSION@
@ -733,22 +684,13 @@ Cally_@CLUTTER_API_VERSION_AM@_gir_SCANNERFLAGS = \
# Note: it's important to pass --include-uninstalled for the Cogl-1.0.gir
# before the Clutter gir otherwise g-ir-scanner can get upset as it
# immediatly scans the Clutter gir file and may fail to find a Cogl-1.0.gir
if USE_SYSTEM_COGL
Cally_@CLUTTER_API_VERSION_AM@_gir_SCANNERFLAGS += \
--include-uninstalled=$(top_builddir)/clutter/Clutter-@CLUTTER_API_VERSION@.gir
else
Cally_@CLUTTER_API_VERSION_AM@_gir_LIBS += \
$(top_builddir)/clutter/cogl/cogl/libcogl.la \
$(top_builddir)/clutter/cogl/pango/libcoglpango.la
Cally_@CLUTTER_API_VERSION_AM@_gir_SCANNERFLAGS += \
--include-uninstalled=$(top_builddir)/clutter/Cogl-1.0.gir \
--include-uninstalled=$(top_builddir)/clutter/Clutter-@CLUTTER_API_VERSION@.gir
endif
INTROSPECTION_GIRS += Cally-@CLUTTER_API_VERSION@.gir
if SUPPORT_X11
ClutterX11-@CLUTTER_API_VERSION@.gir: Makefile Clutter-@CLUTTER_API_VERSION@.gir $(COGL_GIR_DEP)
ClutterX11-@CLUTTER_API_VERSION@.gir: Makefile Clutter-@CLUTTER_API_VERSION@.gir
ClutterX11_@CLUTTER_API_VERSION_AM@_gir_SCANNERFLAGS = \
--identifier-prefix=ClutterX11 \
@ -763,17 +705,8 @@ ClutterX11_@CLUTTER_API_VERSION_AM@_gir_CFLAGS = $(INCLUDES) $(CLUTTER_CFLAGS) $
# Note: it's important to pass --include-uninstalled for the Cogl-1.0.gir
# before the Clutter gir otherwise g-ir-scanner can get upset as it
# immediatly scans the Clutter gir file and may fail to find a Cogl-1.0.gir
if USE_SYSTEM_COGL
ClutterX11_@CLUTTER_API_VERSION_AM@_gir_SCANNERFLAGS += \
--include-uninstalled=$(top_builddir)/clutter/Clutter-@CLUTTER_API_VERSION@.gir
else
ClutterX11_@CLUTTER_API_VERSION_AM@_gir_SCANNERFLAGS += \
--include-uninstalled=$(top_builddir)/clutter/Cogl-1.0.gir \
--include-uninstalled=$(top_builddir)/clutter/Clutter-@CLUTTER_API_VERSION@.gir
ClutterX11_@CLUTTER_API_VERSION_AM@_gir_LIBS += \
$(top_builddir)/clutter/cogl/cogl/libcogl.la \
$(top_builddir)/clutter/cogl/pango/libcoglpango.la
endif
INTROSPECTION_GIRS += ClutterX11-@CLUTTER_API_VERSION@.gir
endif # SUPPORT_X11

5
clutter/clutter-main.c
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@ -110,12 +110,7 @@
#include "clutter-version.h" /* For flavour define */
#include <cogl/cogl.h>
#ifdef CLUTTER_USING_SYSTEM_COGL
#include <cogl/cogl-pango.h>
#else
#include "pango/cogl-pango.h"
#endif
#include "cally.h" /* For accessibility support */

4
clutter/clutter-private.h
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@ -30,11 +30,7 @@
#include <glib/gi18n-lib.h>
#ifdef CLUTTER_USING_SYSTEM_COGL
#include <cogl/cogl-pango.h>
#else
#include "pango/cogl-pango.h"
#endif
#include "clutter-backend.h"
#include "clutter-effect.h"

7
clutter/cogl/Makefile.am
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@ -1,7 +0,0 @@
SUBDIRS = cogl pango
if COGL_STANDALONE_BUILD
SUBDIRS += po examples
endif
ACLOCAL_AMFLAGS = -I build/autotools ${ACLOCAL_FLAGS}

73
clutter/cogl/autogen.sh
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@ -1,73 +0,0 @@
#!/bin/sh
# Run this to generate all the initial makefiles, etc.
srcdir=`dirname $0`
test -z "$srcdir" && srcdir=.
ORIGDIR=`pwd`
cd $srcdir
PROJECT=Cogl
TEST_TYPE=-f
FILE=cogl/cogl.h
test $TEST_TYPE $FILE || {
echo "You must run this script in the top-level $PROJECT directory"
exit 1
}
if automake-1.11 --version < /dev/null > /dev/null 2>&1 ; then
AUTOMAKE=automake-1.11
ACLOCAL=aclocal-1.11
export AUTOMAKE ACLOCAL
else
echo
echo "You must have automake 1.11.x installed to compile $PROJECT
ECT."
echo "Install the appropriate package for your distribution,"
echo "or get the source tarball at http://ftp.gnu.org/gnu/automake/"
exit 1
fi
(gtkdocize --version) < /dev/null > /dev/null 2>&1 || {
echo
echo "You must have gtk-doc installed to compile $PROJECT."
echo "Install the appropriate package for your distribution,"
echo "or get the source tarball at http://ftp.gnome.org/pub/GNOME/sources/gtk-doc/"
exit 1
}
# NOCONFIGURE is used by gnome-common
if test -z "$NOCONFIGURE"; then
if test -z "$*"; then
echo "I am going to run ./configure with no arguments - if you wish "
echo "to pass any to it, please specify them on the $0 command line."
fi
fi
if test -z "$ACLOCAL_FLAGS"; then
acdir=`$ACLOCAL --print-ac-dir`
m4list="glib-2.0.m4"
for file in $m4list; do
if [ ! -f "$acdir/$file" ]; then
echo "WARNING: aclocal's directory is $acdir, but..."
echo " no file $acdir/$file"
echo " You may see fatal macro warnings below."
echo " If these files are installed in /some/dir, set the ACLOCAL_FLAGS "
echo " environment variable to \"-I /some/dir\", or install"
echo " $acdir/$file."
echo ""
fi
done
fi
rm -rf autom4te.cache
gtkdocize || exit $?
autoreconf -vfi || exit $?
cd $ORIGDIR || exit $?
if test -z "$NOCONFIGURE"; then
$srcdir/configure $AUTOGEN_CONFIGURE_ARGS "$@" || exit $?
echo "Now type 'make' to compile $PROJECT."
fi

51
clutter/cogl/build/autotools/Makefile.am.enums
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@ -1,51 +0,0 @@
# Rules for generating enumeration types using glib-mkenums
#
# Define:
# glib_enum_h = header template file
# glib_enum_c = source template file
# glib_enum_headers = list of headers to parse
#
# before including Makefile.am.enums. You will also need to have
# the following targets already defined:
#
# CLEANFILES
# DISTCLEANFILES
# BUILT_SOURCES
# EXTRA_DIST
#
# Author: Emmanuele Bassi <ebassi@linux.intel.com>
# Basic sanity checks
$(if $(GLIB_MKENUMS),,$(error Need to define GLIB_MKENUMS))
$(if $(or $(glib_enum_h), \
$(glib_enum_c)),, \
$(error Need to define glib_enum_h and glib_enum_c))
$(if $(glib_enum_headers),,$(error Need to define glib_enum_headers))
enum_tmpl_h=$(addprefix $(srcdir)/, $(glib_enum_h:.h=.h.in))
enum_tmpl_c=$(addprefix $(srcdir)/, $(glib_enum_c:.c=.c.in))
CLEANFILES += stamp-enum-types
DISTCLEANFILES += $(glib_enum_h) $(glib_enum_c)
BUILT_SOURCES += $(glib_enum_h) $(glib_enum_c)
EXTRA_DIST += $(enum_tmpl_h) $(enum_tmpl_c)
stamp-enum-types: $(glib_enum_headers) $(enum_tmpl_h)
$(AM_V_GEN)$(GLIB_MKENUMS) \
--template $(enum_tmpl_h) \
$(glib_enum_headers) > xgen-eh \
&& (cmp -s xgen-eh $(glib_enum_h) || cp -f xgen-eh $(glib_enum_h)) \
&& rm -f xgen-eh \
&& echo timestamp > $(@F)
$(glib_enum_h): stamp-enum-types
@true
$(glib_enum_c): $(glib_enum_headers) $(glib_enum_h) $(enum_tmpl_c)
$(AM_V_GEN)$(GLIB_MKENUMS) \
--template $(enum_tmpl_c) \
$(glib_enum_headers) > xgen-ec \
&& cp -f xgen-ec $(glib_enum_c) \
&& rm -f xgen-ec

19
clutter/cogl/build/autotools/Makefile.am.silent
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@ -1,19 +0,0 @@
# custom rules for quiet builds
QUIET_GEN = $(AM_V_GEN)
QUIET_LN = $(QUIET_LN_$(V))
QUIET_LN_ = $(QUIET_LN_$(AM_DEFAULT_VERBOSITY))
QUIET_LN_0 = @echo ' LN '$@;
QUIET_RM = $(QUIET_RM_$(V))
QUIET_RM_ = $(QUIET_RM_$(AM_DEFAULT_VERBOSITY))
QUIET_RM_0 = @echo ' RM '$@;
QUIET_SCAN = $(QUIET_SCAN_$(V))
QUIET_SCAN_ = $(QUIET_SCAN_$(AM_DEFAULT_VERBOSITY))
QUIET_SCAN_0 = @echo ' GISCAN '$@;
QUIET_COMP = $(QUIET_COMP_$(V))
QUIET_COMP_ = $(QUIET_COMP_$(AM_DEFAULT_VERBOSITY))
QUIET_COMP_0 = @echo ' GICOMP '$@;

62
clutter/cogl/build/autotools/as-compiler-flag.m4
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@ -1,62 +0,0 @@
dnl as-compiler-flag.m4 0.1.0
dnl autostars m4 macro for detection of compiler flags
dnl David Schleef <ds@schleef.org>
dnl $Id: as-compiler-flag.m4,v 1.1 2005/12/15 23:35:19 ds Exp $
dnl AS_COMPILER_FLAG(CFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
dnl Tries to compile with the given CFLAGS.
dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
dnl and ACTION-IF-NOT-ACCEPTED otherwise.
AC_DEFUN([AS_COMPILER_FLAG],
[
AC_MSG_CHECKING([to see if compiler understands $1])
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $1"
AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no])
CFLAGS="$save_CFLAGS"
if test "X$flag_ok" = Xyes ; then
m4_ifvaln([$2],[$2])
true
else
m4_ifvaln([$3],[$3])
true
fi
AC_MSG_RESULT([$flag_ok])
])
dnl AS_COMPILER_FLAGS(VAR, FLAGS)
dnl Tries to compile with the given CFLAGS.
AC_DEFUN([AS_COMPILER_FLAGS],
[
list=$2
flags_supported=""
flags_unsupported=""
AC_MSG_CHECKING([for supported compiler flags])
for each in $list
do
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $each"
AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no])
CFLAGS="$save_CFLAGS"
if test "X$flag_ok" = Xyes ; then
flags_supported="$flags_supported $each"
else
flags_unsupported="$flags_unsupported $each"
fi
done
AC_MSG_RESULT([$flags_supported])
if test "X$flags_unsupported" != X ; then
AC_MSG_WARN([unsupported compiler flags: $flags_unsupported])
fi
$1="$$1 $flags_supported"
])

24
clutter/cogl/build/autotools/as-linguas.m4
View File

@ -1,24 +0,0 @@
# Set ALL_ALL_LINGUAS based on the .po files present. Optional argument is the
# name of the po directory. $podir/LINGUAS.ignore can be used to ignore a
# subset of the po files.
AC_DEFUN([AS_ALL_LINGUAS],
[
AC_MSG_CHECKING([for linguas])
podir="m4_default([$1],[$srcdir/po])"
linguas=`cd $podir && ls *.po 2>/dev/null | awk 'BEGIN { FS="."; ORS=" " } { print $[]1 }'`
if test -f "$podir/LINGUAS.ignore"; then
ALL_LINGUAS="";
ignore_linguas=`sed -n -e 's/^\s\+\|\s\+$//g' -e '/^#/b' -e '/\S/!b' \
-e 's/\s\+/\n/g' -e p "$podir/LINGUAS.ignore"`;
for lang in $linguas; do
if ! echo "$ignore_linguas" | grep -q "^${lang}$"; then
ALL_LINGUAS="$ALL_LINGUAS $lang";
fi;
done;
else
ALL_LINGUAS="$linguas";
fi;
AC_SUBST([ALL_LINGUAS])
AC_MSG_RESULT($ALL_LINGUAS)
])

94
clutter/cogl/build/autotools/introspection.m4
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@ -1,94 +0,0 @@
dnl -*- mode: autoconf -*-
dnl Copyright 2009 Johan Dahlin
dnl
dnl This file is free software; the author(s) gives unlimited
dnl permission to copy and/or distribute it, with or without
dnl modifications, as long as this notice is preserved.
dnl
# serial 1
m4_define([_GOBJECT_INTROSPECTION_CHECK_INTERNAL],
[
AC_BEFORE([AC_PROG_LIBTOOL],[$0])dnl setup libtool first
AC_BEFORE([AM_PROG_LIBTOOL],[$0])dnl setup libtool first
AC_BEFORE([LT_INIT],[$0])dnl setup libtool first
dnl enable/disable introspection
m4_if([$2], [require],
[dnl
enable_introspection=yes
],[dnl
AC_ARG_ENABLE(introspection,
AS_HELP_STRING([--enable-introspection[=@<:@no/auto/yes@:>@]],
[Enable introspection for this build]),,
[enable_introspection=auto])
])dnl
AC_MSG_CHECKING([for gobject-introspection])
dnl presence/version checking
AS_CASE([$enable_introspection],
[no], [dnl
found_introspection="no (disabled, use --enable-introspection to enable)"
],dnl
[yes],[dnl
PKG_CHECK_EXISTS([gobject-introspection-1.0],,
AC_MSG_ERROR([gobject-introspection-1.0 is not installed]))
PKG_CHECK_EXISTS([gobject-introspection-1.0 >= $1],
found_introspection=yes,
AC_MSG_ERROR([You need to have gobject-introspection >= $1 installed to build AC_PACKAGE_NAME]))
],dnl
[auto],[dnl
PKG_CHECK_EXISTS([gobject-introspection-1.0 >= $1], found_introspection=yes, found_introspection=no)
],dnl
[dnl
AC_MSG_ERROR([invalid argument passed to --enable-introspection, should be one of @<:@no/auto/yes@:>@])
])dnl
AC_MSG_RESULT([$found_introspection])
INTROSPECTION_SCANNER=
INTROSPECTION_COMPILER=
INTROSPECTION_GENERATE=
INTROSPECTION_GIRDIR=
INTROSPECTION_TYPELIBDIR=
if test "x$found_introspection" = "xyes"; then
INTROSPECTION_SCANNER=`$PKG_CONFIG --variable=g_ir_scanner gobject-introspection-1.0`
INTROSPECTION_COMPILER=`$PKG_CONFIG --variable=g_ir_compiler gobject-introspection-1.0`
INTROSPECTION_GENERATE=`$PKG_CONFIG --variable=g_ir_generate gobject-introspection-1.0`
INTROSPECTION_GIRDIR=`$PKG_CONFIG --variable=girdir gobject-introspection-1.0`
INTROSPECTION_TYPELIBDIR="$($PKG_CONFIG --variable=typelibdir gobject-introspection-1.0)"
INTROSPECTION_CFLAGS=`$PKG_CONFIG --cflags gobject-introspection-1.0`
INTROSPECTION_LIBS=`$PKG_CONFIG --libs gobject-introspection-1.0`
INTROSPECTION_MAKEFILE=`$PKG_CONFIG --variable=datadir gobject-introspection-1.0`/gobject-introspection-1.0/Makefile.introspection
fi
AC_SUBST(INTROSPECTION_SCANNER)
AC_SUBST(INTROSPECTION_COMPILER)
AC_SUBST(INTROSPECTION_GENERATE)
AC_SUBST(INTROSPECTION_GIRDIR)
AC_SUBST(INTROSPECTION_TYPELIBDIR)
AC_SUBST(INTROSPECTION_CFLAGS)
AC_SUBST(INTROSPECTION_LIBS)
AC_SUBST(INTROSPECTION_MAKEFILE)
AM_CONDITIONAL(HAVE_INTROSPECTION, test "x$found_introspection" = "xyes")
])
dnl Usage:
dnl GOBJECT_INTROSPECTION_CHECK([minimum-g-i-version])
AC_DEFUN([GOBJECT_INTROSPECTION_CHECK],
[
_GOBJECT_INTROSPECTION_CHECK_INTERNAL([$1])
])
dnl Usage:
dnl GOBJECT_INTROSPECTION_REQUIRE([minimum-g-i-version])
AC_DEFUN([GOBJECT_INTROSPECTION_REQUIRE],
[
_GOBJECT_INTROSPECTION_CHECK_INTERNAL([$1], [require])
])

419
clutter/cogl/cogl/Makefile.am
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@ -1,419 +0,0 @@
include $(top_srcdir)/build/autotools/Makefile.am.silent
# preamble
NULL =
SUBDIRS =
BUILT_SOURCES =
EXTRA_DIST =
CLEANFILES =
DISTCLEANFILES =
noinst_LTLIBRARIES =
lib_LTLIBRARIES =
INCLUDES = \
-I$(top_srcdir) \
-I$(top_builddir) \
-I$(srcdir)/tesselator \
-I$(srcdir)/winsys \
-I$(srcdir)/driver/$(COGL_DRIVER) \
$(NULL)
if COGL_STANDALONE_BUILD
INCLUDES += \
-I$(top_srcdir)/clutter/cogl \
-I$(top_builddir)/clutter/cogl \
$(NULL)
else
INCLUDES += \
-I$(top_srcdir)/clutter/cogl \
-I$(top_builddir)/clutter/cogl \
$(NULL)
endif
AM_CPPFLAGS = \
-DG_DISABLE_SINGLE_INCLUDES \
-DG_DISABLE_DEPRECATED \
-DG_LOG_DOMAIN=\"Cogl\" \
-DCLUTTER_COMPILATION \
$(NULL)
AM_CFLAGS = $(COGL_DEP_CFLAGS) $(COGL_EXTRA_CFLAGS) $(MAINTAINER_CFLAGS)
BUILT_SOURCES += cogl-defines.h
DISTCLEANFILES += cogl-defines.h
EXTRA_DIST += cogl-defines.h.in
# Note: The cogl-1.0/cogl-gl-1.0 files are essentially for
# compatability only. I'm not really sure who could possibly be using
# them so we may decide to remove them entirely at some point.
pc_files = \
cogl-1.0.pc \
cogl-gl-1.0.pc
if COGL_STANDALONE_BUILD
pc_files += cogl-$(COGL_API_VERSION).pc
endif
cogl-gl-1.0.pc: cogl-1.0.pc
$(QUIET_GEN)cp -f $< $(@F)
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = $(pc_files)
EXTRA_DIST += cogl.pc.in
DISTCLEANFILES += $(pc_files)
# public headers
cogl_public_h = \
$(srcdir)/cogl-object.h \
$(srcdir)/cogl-bitmap.h \
$(srcdir)/cogl-buffer.h \
$(srcdir)/cogl-color.h \
$(srcdir)/cogl-fixed.h \
$(srcdir)/cogl-material-compat.h \
$(srcdir)/cogl-pipeline.h \
$(srcdir)/cogl-vector.h \
$(srcdir)/cogl-matrix.h \
$(srcdir)/cogl-offscreen.h \
$(srcdir)/cogl-primitives.h \
$(srcdir)/cogl-path.h \
$(srcdir)/cogl-pixel-array.h \
$(srcdir)/cogl-shader.h \
$(srcdir)/cogl-texture.h \
$(srcdir)/cogl-texture-3d.h \
$(srcdir)/cogl-types.h \
$(srcdir)/cogl-vertex-buffer.h \
$(srcdir)/cogl-index-array.h \
$(srcdir)/cogl-vertex-array.h \
$(srcdir)/cogl-indices.h \
$(srcdir)/cogl-attribute.h \
$(srcdir)/cogl-primitive.h \
$(srcdir)/cogl-clip-state.h \
$(srcdir)/cogl-framebuffer.h \
$(srcdir)/cogl-clutter.h \
$(srcdir)/cogl.h \
$(NULL)
cogl_experimental_h = \
$(srcdir)/cogl-renderer.h \
$(srcdir)/cogl-swap-chain.h \
$(srcdir)/cogl-onscreen-template.h \
$(srcdir)/cogl-display.h \
$(srcdir)/cogl-context.h \
$(srcdir)/cogl2-path.h \
$(srcdir)/cogl2-clip-state.h \
$(NULL)
# driver sources
cogl_driver_sources =
if COGL_DRIVER_GL
cogl_driver_sources += \
$(srcdir)/driver/gl/cogl-feature-functions-gl.h \
$(srcdir)/driver/gl/cogl-gl.c \
$(srcdir)/driver/gl/cogl-texture-driver-gl.c \
$(NULL)
endif
if COGL_DRIVER_GLES
cogl_driver_sources += \
$(srcdir)/driver/gles/cogl-feature-functions-gles.h \
$(srcdir)/driver/gles/cogl-gles.c \
$(srcdir)/driver/gles/cogl-texture-driver-gles.c \
$(NULL)
endif # COGL_DRIVER_GLES
# winsys sources, common to all backends
cogl_winsys_common_sources = \
$(srcdir)/winsys/cogl-winsys-private.h \
$(srcdir)/winsys/cogl-winsys.c \
$(NULL)
# tesselator sources
cogl_tesselator_sources = \
$(srcdir)/tesselator/dict-list.h \
$(srcdir)/tesselator/dict.c \
$(srcdir)/tesselator/dict.h \
$(srcdir)/tesselator/geom.c \
$(srcdir)/tesselator/geom.h \
$(srcdir)/tesselator/gluos.h \
$(srcdir)/tesselator/memalloc.h \
$(srcdir)/tesselator/mesh.c \
$(srcdir)/tesselator/mesh.h \
$(srcdir)/tesselator/normal.c \
$(srcdir)/tesselator/normal.h \
$(srcdir)/tesselator/priorityq-heap.h \
$(srcdir)/tesselator/priorityq-sort.h \
$(srcdir)/tesselator/priorityq.c \
$(srcdir)/tesselator/priorityq.h \
$(srcdir)/tesselator/render.c \
$(srcdir)/tesselator/render.h \
$(srcdir)/tesselator/sweep.c \
$(srcdir)/tesselator/sweep.h \
$(srcdir)/tesselator/tess.c \
$(srcdir)/tesselator/tess.h \
$(srcdir)/tesselator/tesselator.h \
$(srcdir)/tesselator/tessmono.c \
$(srcdir)/tesselator/tessmono.h \
$(srcdir)/tesselator/GL/glu.h \
$(NULL)
EXTRA_DIST += \
$(srcdir)/tesselator/README \
$(srcdir)/tesselator/priorityq-heap.c \
$(NULL)
# sources
cogl_sources_c = \
$(cogl_driver_sources) \
$(cogl_winsys_common_sources) \
$(cogl_tesselator_sources) \
$(srcdir)/cogl-private.h \
$(srcdir)/cogl-debug.h \
$(srcdir)/cogl-debug-options.h \
$(srcdir)/cogl-handle.h \
$(srcdir)/cogl-context-private.h \
$(srcdir)/cogl-context.c \
$(srcdir)/cogl-renderer-private.h \
$(srcdir)/cogl-renderer.h \
$(srcdir)/cogl-renderer.c \
$(srcdir)/cogl-swap-chain-private.h \
$(srcdir)/cogl-swap-chain.h \
$(srcdir)/cogl-swap-chain.c \
$(srcdir)/cogl-onscreen-template-private.h \
$(srcdir)/cogl-onscreen-template.h \
$(srcdir)/cogl-onscreen-template.c \
$(srcdir)/cogl-display-private.h \
$(srcdir)/cogl-display.h \
$(srcdir)/cogl-display.c \
$(srcdir)/cogl-internal.h \
$(srcdir)/cogl.c \
$(srcdir)/cogl-object-private.h \
$(srcdir)/cogl-object.h \
$(srcdir)/cogl-object.c \
$(srcdir)/cogl-util.h \
$(srcdir)/cogl-util.c \
$(srcdir)/cogl-bitmap-private.h \
$(srcdir)/cogl-bitmap.c \
$(srcdir)/cogl-bitmap-fallback.c \
$(srcdir)/cogl-primitives-private.h \
$(srcdir)/cogl-primitives.h \
$(srcdir)/cogl-primitives.c \
$(srcdir)/cogl-path-private.h \
$(srcdir)/cogl-path.h \
$(srcdir)/cogl-path.c \
$(srcdir)/cogl2-path.h \
$(srcdir)/cogl2-path.c \
$(srcdir)/cogl-bitmap-pixbuf.c \
$(srcdir)/cogl-clip-stack.h \
$(srcdir)/cogl-clip-stack.c \
$(srcdir)/cogl-clip-state-private.h \
$(srcdir)/cogl-clip-state.h \
$(srcdir)/cogl-clip-state.c \
$(srcdir)/cogl2-clip-state.h \
$(srcdir)/cogl2-clip-state.c \
$(srcdir)/cogl-feature-private.h \
$(srcdir)/cogl-feature-private.c \
$(srcdir)/cogl-fixed.c \
$(srcdir)/cogl-color-private.h \
$(srcdir)/cogl-color.c \
$(srcdir)/cogl-buffer-private.h \
$(srcdir)/cogl-buffer.c \
$(srcdir)/cogl-pixel-array-private.h \
$(srcdir)/cogl-pixel-array.c \
$(srcdir)/cogl-vertex-buffer-private.h \
$(srcdir)/cogl-vertex-buffer.c \
$(srcdir)/cogl-index-array-private.h \
$(srcdir)/cogl-index-array.c \
$(srcdir)/cogl-vertex-array-private.h \
$(srcdir)/cogl-vertex-array.c \
$(srcdir)/cogl-indices-private.h \
$(srcdir)/cogl-indices.c \
$(srcdir)/cogl-attribute-private.h \
$(srcdir)/cogl-attribute.c \
$(srcdir)/cogl-primitive-private.h \
$(srcdir)/cogl-primitive.c \
$(srcdir)/cogl-matrix.c \
$(srcdir)/cogl-vector.c \
$(srcdir)/cogl-matrix-private.h \
$(srcdir)/cogl-matrix-stack.c \
$(srcdir)/cogl-matrix-stack.h \
$(srcdir)/cogl-pipeline.c \
$(srcdir)/cogl-pipeline-private.h \
$(srcdir)/cogl-pipeline-opengl.c \
$(srcdir)/cogl-pipeline-opengl-private.h \
$(srcdir)/cogl-pipeline-fragend-glsl.c \
$(srcdir)/cogl-pipeline-fragend-glsl-private.h \
$(srcdir)/cogl-pipeline-fragend-arbfp.c \
$(srcdir)/cogl-pipeline-fragend-arbfp-private.h \
$(srcdir)/cogl-pipeline-fragend-fixed.c \
$(srcdir)/cogl-pipeline-fragend-fixed-private.h \
$(srcdir)/cogl-pipeline-vertend-glsl.c \
$(srcdir)/cogl-pipeline-vertend-glsl-private.h \
$(srcdir)/cogl-pipeline-vertend-fixed.c \
$(srcdir)/cogl-pipeline-vertend-fixed-private.h \
$(srcdir)/cogl-pipeline-progend-glsl.c \
$(srcdir)/cogl-pipeline-progend-glsl-private.h \
$(srcdir)/cogl-material-compat.c \
$(srcdir)/cogl-program.c \
$(srcdir)/cogl-program-private.h \
$(srcdir)/cogl-blend-string.c \
$(srcdir)/cogl-blend-string.h \
$(srcdir)/cogl-debug.c \
$(srcdir)/cogl-sub-texture-private.h \
$(srcdir)/cogl-texture-private.h \
$(srcdir)/cogl-texture-2d-private.h \
$(srcdir)/cogl-texture-2d-sliced-private.h \
$(srcdir)/cogl-texture-3d-private.h \
$(srcdir)/cogl-texture-driver.h \
$(srcdir)/cogl-sub-texture.c \
$(srcdir)/cogl-texture.c \
$(srcdir)/cogl-texture-2d.c \
$(srcdir)/cogl-texture-2d-sliced.c \
$(srcdir)/cogl-texture-3d.c \
$(srcdir)/cogl-texture-rectangle-private.h \
$(srcdir)/cogl-texture-rectangle.c \
$(srcdir)/cogl-rectangle-map.h \
$(srcdir)/cogl-rectangle-map.c \
$(srcdir)/cogl-atlas.h \
$(srcdir)/cogl-atlas.c \
$(srcdir)/cogl-atlas-texture-private.h \
$(srcdir)/cogl-atlas-texture.c \
$(srcdir)/cogl-blit.h \
$(srcdir)/cogl-blit.c \
$(srcdir)/cogl-spans.h \
$(srcdir)/cogl-spans.c \
$(srcdir)/cogl-journal-private.h \
$(srcdir)/cogl-journal.c \
$(srcdir)/cogl-framebuffer-private.h \
$(srcdir)/cogl-framebuffer.c \
$(srcdir)/cogl-matrix-mesa.h \
$(srcdir)/cogl-matrix-mesa.c \
$(srcdir)/cogl-profile.h \
$(srcdir)/cogl-profile.c \
$(srcdir)/cogl-flags.h \
$(srcdir)/cogl-bitmask.h \
$(srcdir)/cogl-bitmask.c \
$(srcdir)/cogl-shader-boilerplate.h \
$(srcdir)/cogl-shader-private.h \
$(srcdir)/cogl-shader.c \
$(srcdir)/cogl-gtype-private.h \
$(srcdir)/cogl-point-in-poly-private.h \
$(srcdir)/cogl-point-in-poly.c \
$(srcdir)/cogl-clutter.c \
$(NULL)
if SUPPORT_XLIB
cogl_experimental_h += \
$(srcdir)/winsys/cogl-texture-pixmap-x11.h \
$(srcdir)/cogl-xlib.h
cogl_sources_c += \
$(srcdir)/cogl-renderer-x11-private.h \
$(srcdir)/cogl-renderer-xlib-private.h \
$(srcdir)/cogl-renderer-xlib.c \
$(srcdir)/cogl-display-xlib-private.h \
$(srcdir)/cogl-xlib.c \
$(srcdir)/winsys/cogl-texture-pixmap-x11.c \
$(srcdir)/winsys/cogl-texture-pixmap-x11-private.h
endif
if SUPPORT_GLX
cogl_sources_c += \
$(srcdir)/cogl-renderer-glx-private.h \
$(srcdir)/cogl-display-glx-private.h \
$(srcdir)/winsys/cogl-winsys-glx-feature-functions.h \
$(srcdir)/winsys/cogl-winsys-glx.c
endif
if SUPPORT_EGL_PLATFORM_POWERVR_X11
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-egl.c
endif
if SUPPORT_EGL_PLATFORM_POWERVR_NULL
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-egl.c
endif
if SUPPORT_EGL_PLATFORM_GDL
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-egl.c
endif
if SUPPORT_STUB
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-stub.c
endif
EXTRA_DIST += stb_image.c
# glib-mkenums rules
glib_enum_h = cogl-enum-types.h
glib_enum_c = cogl-enum-types.c
glib_enum_headers = $(cogl_public_h)
include $(top_srcdir)/build/autotools/Makefile.am.enums
if COGL_STANDALONE_BUILD
lib_LTLIBRARIES += libcogl.la
else
noinst_LTLIBRARIES += libcogl.la
endif
libcogl_la_LIBADD = -lm $(COGL_DEP_LIBS) $(COGL_EXTRA_LDFLAGS)
if SUPPORT_GLX
libcogl_la_LIBADD += -ldl
endif
if COGL_STANDALONE_BUILD
# XXX: The aim is to eventually get rid of all private API exports
# for coglpango.
libcogl_la_LDFLAGS = \
-no-undefined \
-version-info @COGL_LT_CURRENT@:@COGL_LT_REVISION@:@COGL_LT_AGE@ \
-export-dynamic \
-export-symbols-regex "^(cogl|_cogl_debug_flags|_cogl_atlas_new|_cogl_atlas_add_reorganize_callback|_cogl_atlas_reserve_space|_cogl_callback|_cogl_util_get_eye_planes_for_screen_poly).*"
endif
libcogl_la_SOURCES = $(cogl_sources_c)
nodist_libcogl_la_SOURCES = $(BUILT_SOURCES)
# Cogl installed headers
cogl_headers = \
$(cogl_public_h) \
$(srcdir)/cogl-deprecated.h \
$(NULL)
if COGL_STANDALONE_BUILD
coglincludedir = $(includedir)/cogl/cogl
coglinclude_HEADERS = $(cogl_headers) $(cogl_experimental_h)
nodist_coglinclude_HEADERS = cogl-defines.h cogl-enum-types.h
else
coglincludedir = $(includedir)/clutter-@CLUTTER_API_VERSION@/cogl
coglinclude_HEADERS = $(cogl_headers) $(cogl_experimental_h)
nodist_coglinclude_HEADERS = cogl-defines.h cogl-enum-types.h
endif
-include $(INTROSPECTION_MAKEFILE)
INTROSPECTION_GIRS =
if HAVE_INTROSPECTION
Cogl-1.0.gir: libcogl.la Makefile
Cogl_1_0_gir_NAMESPACE = Cogl
Cogl_1_0_gir_VERSION = 1.0
Cogl_1_0_gir_LIBS = libcogl.la
Cogl_1_0_gir_FILES = $(cogl_headers) cogl-enum-types.h
Cogl_1_0_gir_CFLAGS = $(INCLUDES) $(AM_CPPFLAGS)
Cogl_1_0_gir_INCLUDES = GL-1.0 GObject-2.0
Cogl_1_0_gir_EXPORT_PACKAGES = cogl-1.0
Cogl_1_0_gir_SCANNERFLAGS = --warn-all --c-include='cogl/cogl.h'
INTROSPECTION_GIRS += Cogl-1.0.gir
girdir = $(datadir)/gir-1.0
gir_DATA = $(INTROSPECTION_GIRS)
CLEANFILES += $(INTROSPECTION_GIRS)
endif

17
clutter/cogl/cogl/cogl-1.0-clutter.pc.in
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@ -1,17 +0,0 @@
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
apiversion=1.0
requires=@COGL_PKG_REQUIRES@
backend=none #only kept for backward compatability
winsys=none
cogl=none #only kept for backward compatability
driver=none
Name: Cogl
Description: An object oriented GL/GLES Abstraction/Utility Layer
Version: @COGL_1_VERSION@
Libs: -L${libdir} -lcogl -lcoglpango
Cflags: -I${includedir}/clutter-${apiversion}
Requires: ${requires}

13
clutter/cogl/cogl/cogl-1.0.pc.in
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@ -1,13 +0,0 @@
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
apiversion=1.0
requires=@COGL_PKG_REQUIRES@
Name: Cogl
Description: An object oriented GL/GLES Abstraction/Utility Layer
Version: @COGL_1_VERSION@
Libs: -L${libdir} -lcogl -lcoglpango
Cflags: -I${includedir}/cogl
Requires: ${requires}

80
clutter/cogl/cogl/cogl-atlas-texture-private.h
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@ -1,80 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_ATLAS_TEXTURE_H
#define __COGL_ATLAS_TEXTURE_H
#include "cogl-handle.h"
#include "cogl-texture-private.h"
#include "cogl-rectangle-map.h"
#include "cogl-atlas.h"
#define COGL_ATLAS_TEXTURE(tex) ((CoglAtlasTexture *) tex)
typedef struct _CoglAtlasTexture CoglAtlasTexture;
struct _CoglAtlasTexture
{
CoglTexture _parent;
/* The format that the texture is in. This isn't necessarily the
same format as the atlas texture because we can store
pre-multiplied and non-pre-multiplied textures together */
CoglPixelFormat format;
/* The rectangle that was used to add this texture to the
atlas. This includes the 1-pixel border */
CoglRectangleMapEntry rectangle;
/* The atlas that this texture is in. If the texture is no longer in
an atlas then this will be NULL. A reference is taken on the
atlas by the texture (but not vice versa so there is no cycle) */
CoglAtlas *atlas;
/* A CoglSubTexture representing the region for easy rendering */
CoglHandle sub_texture;
};
GQuark
_cogl_handle_atlas_texture_get_type (void);
CoglHandle
_cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
CoglTextureFlags flags,
CoglPixelFormat internal_format);
CoglHandle
_cogl_atlas_texture_new_with_size (unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat internal_format);
void
_cogl_atlas_texture_add_reorganize_callback (GHookFunc callback,
void *user_data);
void
_cogl_atlas_texture_remove_reorganize_callback (GHookFunc callback,
void *user_data);
#endif /* __COGL_ATLAS_TEXTURE_H */

806
clutter/cogl/cogl/cogl-atlas-texture.c
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@ -1,806 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009,2010,2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-debug.h"
#include "cogl-internal.h"
#include "cogl-util.h"
#include "cogl-texture-private.h"
#include "cogl-atlas-texture-private.h"
#include "cogl-texture-2d-private.h"
#include "cogl-sub-texture-private.h"
#include "cogl-context-private.h"
#include "cogl-handle.h"
#include "cogl-texture-driver.h"
#include "cogl-rectangle-map.h"
#include "cogl-journal-private.h"
#include "cogl-pipeline-opengl-private.h"
#include "cogl-atlas.h"
#include <stdlib.h>
static void _cogl_atlas_texture_free (CoglAtlasTexture *sub_tex);
COGL_TEXTURE_INTERNAL_DEFINE (AtlasTexture, atlas_texture);
static const CoglTextureVtable cogl_atlas_texture_vtable;
static CoglHandle
_cogl_atlas_texture_create_sub_texture (CoglHandle full_texture,
const CoglRectangleMapEntry *rectangle)
{
/* Create a subtexture for the given rectangle not including the
1-pixel border */
return _cogl_sub_texture_new (full_texture,
rectangle->x + 1,
rectangle->y + 1,
rectangle->width - 2,
rectangle->height - 2);
}
static void
_cogl_atlas_texture_update_position_cb (gpointer user_data,
CoglHandle new_texture,
const CoglRectangleMapEntry *rectangle)
{
CoglAtlasTexture *atlas_tex = user_data;
/* Update the sub texture */
if (atlas_tex->sub_texture)
cogl_handle_unref (atlas_tex->sub_texture);
atlas_tex->sub_texture =
_cogl_atlas_texture_create_sub_texture (new_texture, rectangle);
/* Update the position */
atlas_tex->rectangle = *rectangle;
}
static void
_cogl_atlas_texture_pre_reorganize_foreach_cb
(const CoglRectangleMapEntry *entry,
void *rectangle_data,
void *user_data)
{
CoglAtlasTexture *atlas_tex = rectangle_data;
/* Keep a reference to the texture because we don't want it to be
destroyed during the reorganization */
cogl_handle_ref (atlas_tex);
/* Notify cogl-pipeline.c that the texture's underlying GL texture
* storage is changing so it knows it may need to bind a new texture
* if the CoglTexture is reused with the same texture unit. */
_cogl_pipeline_texture_storage_change_notify (COGL_TEXTURE (atlas_tex));
}
static void
_cogl_atlas_texture_pre_reorganize_cb (void *data)
{
CoglAtlas *atlas = data;
/* We don't know if any journal entries currently depend on OpenGL
* texture coordinates that would be invalidated by reorganizing
* this atlas so we flush all journals before migrating.
*
* We are assuming that texture atlas migration never happens
* during a flush so we don't have to consider recursion here.
*/
cogl_flush ();
if (atlas->map)
_cogl_rectangle_map_foreach (atlas->map,
_cogl_atlas_texture_pre_reorganize_foreach_cb,
NULL);
}
typedef struct
{
CoglAtlasTexture **textures;
/* Number of textures found so far */
unsigned int n_textures;
} CoglAtlasTextureGetRectanglesData;
static void
_cogl_atlas_texture_get_rectangles_cb (const CoglRectangleMapEntry *entry,
void *rectangle_data,
void *user_data)
{
CoglAtlasTextureGetRectanglesData *data = user_data;
data->textures[data->n_textures++] = rectangle_data;
}
static void
_cogl_atlas_texture_post_reorganize_cb (void *user_data)
{
CoglAtlas *atlas = user_data;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if (atlas->map)
{
CoglAtlasTextureGetRectanglesData data;
unsigned int i;
data.textures = g_new (CoglAtlasTexture *,
_cogl_rectangle_map_get_n_rectangles (atlas->map));
data.n_textures = 0;
/* We need to remove all of the references that we took during
the preorganize callback. We have to get a separate array of
the textures because CoglRectangleMap doesn't support
removing rectangles during iteration */
_cogl_rectangle_map_foreach (atlas->map,
_cogl_atlas_texture_get_rectangles_cb,
&data);
for (i = 0; i < data.n_textures; i++)
{
/* Ignore textures that don't have an atlas yet. This will
happen when a new texture is added because we allocate
the structure for the texture so that it can get stored
in the atlas but it isn't a valid object yet */
if (data.textures[i]->atlas)
cogl_object_unref (data.textures[i]);
}
g_free (data.textures);
}
/* Notify any listeners that an atlas has changed */
g_hook_list_invoke (&ctx->atlas_reorganize_callbacks, FALSE);
}
static void
_cogl_atlas_texture_atlas_destroyed_cb (void *user_data)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
/* Remove the atlas from the global list */
ctx->atlases = g_slist_remove (ctx->atlases, user_data);
}
static CoglAtlas *
_cogl_atlas_texture_create_atlas (void)
{
static CoglUserDataKey atlas_private_key;
CoglAtlas *atlas;
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
atlas = _cogl_atlas_new (COGL_PIXEL_FORMAT_RGBA_8888,
0,
_cogl_atlas_texture_update_position_cb);
_cogl_atlas_add_reorganize_callback (atlas,
_cogl_atlas_texture_pre_reorganize_cb,
_cogl_atlas_texture_post_reorganize_cb,
atlas);
ctx->atlases = g_slist_prepend (ctx->atlases, atlas);
/* Set some data on the atlas so we can get notification when it is
destroyed in order to remove it from the list. ctx->atlases
effectively holds a weak reference. We don't need a strong
reference because the atlas textures take a reference on the
atlas so it will stay alive */
cogl_object_set_user_data (COGL_OBJECT (atlas), &atlas_private_key, atlas,
_cogl_atlas_texture_atlas_destroyed_cb);
return atlas;
}
static void
_cogl_atlas_texture_foreach_sub_texture_in_region (
CoglTexture *tex,
float virtual_tx_1,
float virtual_ty_1,
float virtual_tx_2,
float virtual_ty_2,
CoglTextureSliceCallback callback,
void *user_data)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
_cogl_texture_foreach_sub_texture_in_region (atlas_tex->sub_texture,
virtual_tx_1,
virtual_ty_1,
virtual_tx_2,
virtual_ty_2,
callback,
user_data);
}
static void
_cogl_atlas_texture_set_wrap_mode_parameters (CoglTexture *tex,
GLenum wrap_mode_s,
GLenum wrap_mode_t,
GLenum wrap_mode_p)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
_cogl_texture_set_wrap_mode_parameters (atlas_tex->sub_texture,
wrap_mode_s,
wrap_mode_t,
wrap_mode_p);
}
static void
_cogl_atlas_texture_remove_from_atlas (CoglAtlasTexture *atlas_tex)
{
if (atlas_tex->atlas)
{
_cogl_atlas_remove (atlas_tex->atlas,
&atlas_tex->rectangle);
cogl_object_unref (atlas_tex->atlas);
atlas_tex->atlas = NULL;
}
}
static void
_cogl_atlas_texture_free (CoglAtlasTexture *atlas_tex)
{
_cogl_atlas_texture_remove_from_atlas (atlas_tex);
cogl_handle_unref (atlas_tex->sub_texture);
/* Chain up */
_cogl_texture_free (COGL_TEXTURE (atlas_tex));
}
static int
_cogl_atlas_texture_get_max_waste (CoglTexture *tex)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
return cogl_texture_get_max_waste (atlas_tex->sub_texture);
}
static gboolean
_cogl_atlas_texture_is_sliced (CoglTexture *tex)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
return cogl_texture_is_sliced (atlas_tex->sub_texture);
}
static gboolean
_cogl_atlas_texture_can_hardware_repeat (CoglTexture *tex)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
return _cogl_texture_can_hardware_repeat (atlas_tex->sub_texture);
}
static void
_cogl_atlas_texture_transform_coords_to_gl (CoglTexture *tex,
float *s,
float *t)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
_cogl_texture_transform_coords_to_gl (atlas_tex->sub_texture, s, t);
}
static CoglTransformResult
_cogl_atlas_texture_transform_quad_coords_to_gl (CoglTexture *tex,
float *coords)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
return _cogl_texture_transform_quad_coords_to_gl (atlas_tex->sub_texture,
coords);
}
static gboolean
_cogl_atlas_texture_get_gl_texture (CoglTexture *tex,
GLuint *out_gl_handle,
GLenum *out_gl_target)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
return cogl_texture_get_gl_texture (atlas_tex->sub_texture,
out_gl_handle,
out_gl_target);
}
static void
_cogl_atlas_texture_set_filters (CoglTexture *tex,
GLenum min_filter,
GLenum mag_filter)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
_cogl_texture_set_filters (atlas_tex->sub_texture, min_filter, mag_filter);
}
static void
_cogl_atlas_texture_migrate_out_of_atlas (CoglAtlasTexture *atlas_tex)
{
/* Make sure this texture is not in the atlas */
if (atlas_tex->atlas)
{
CoglHandle sub_texture;
COGL_NOTE (ATLAS, "Migrating texture out of the atlas");
/* We don't know if any journal entries currently depend on
* OpenGL texture coordinates that would be invalidated by
* migrating textures in this atlas so we flush all journals
* before migrating.
*
* We are assuming that texture atlas migration never happens
* during a flush so we don't have to consider recursion here.
*/
cogl_flush ();
sub_texture =
_cogl_atlas_copy_rectangle (atlas_tex->atlas,
atlas_tex->rectangle.x + 1,
atlas_tex->rectangle.y + 1,
atlas_tex->rectangle.width - 2,
atlas_tex->rectangle.height - 2,
COGL_TEXTURE_NO_ATLAS,
atlas_tex->format);
/* Notify cogl-pipeline.c that the texture's underlying GL texture
* storage is changing so it knows it may need to bind a new texture
* if the CoglTexture is reused with the same texture unit. */
_cogl_pipeline_texture_storage_change_notify (atlas_tex);
/* We need to unref the sub texture after doing the copy because
the copy can involve rendering which might cause the texture
to be used if it is used from a layer that is left in a
texture unit */
cogl_handle_unref (atlas_tex->sub_texture);
atlas_tex->sub_texture = sub_texture;
_cogl_atlas_texture_remove_from_atlas (atlas_tex);
}
}
static void
_cogl_atlas_texture_pre_paint (CoglTexture *tex, CoglTexturePrePaintFlags flags)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
if ((flags & COGL_TEXTURE_NEEDS_MIPMAP))
/* Mipmaps do not work well with the current atlas so instead
we'll just migrate the texture out and use a regular texture */
_cogl_atlas_texture_migrate_out_of_atlas (atlas_tex);
/* Forward on to the sub texture */
_cogl_texture_pre_paint (atlas_tex->sub_texture, flags);
}
static void
_cogl_atlas_texture_ensure_non_quad_rendering (CoglTexture *tex)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Sub textures can't support non-quad rendering so we'll just
migrate the texture out */
_cogl_atlas_texture_migrate_out_of_atlas (atlas_tex);
/* Forward on to the sub texture */
_cogl_texture_ensure_non_quad_rendering (atlas_tex->sub_texture);
}
static gboolean
_cogl_atlas_texture_set_region_with_border (CoglAtlasTexture *atlas_tex,
int src_x,
int src_y,
int dst_x,
int dst_y,
unsigned int dst_width,
unsigned int dst_height,
CoglBitmap *bmp)
{
CoglAtlas *atlas = atlas_tex->atlas;
/* Copy the central data */
if (!_cogl_texture_set_region_from_bitmap (atlas->texture,
src_x, src_y,
dst_x + atlas_tex->rectangle.x + 1,
dst_y + atlas_tex->rectangle.y + 1,
dst_width,
dst_height,
bmp))
return FALSE;
/* Update the left edge pixels */
if (dst_x == 0 &&
!_cogl_texture_set_region_from_bitmap (atlas->texture,
src_x, src_y,
atlas_tex->rectangle.x,
dst_y + atlas_tex->rectangle.y + 1,
1, dst_height,
bmp))
return FALSE;
/* Update the right edge pixels */
if (dst_x + dst_width == atlas_tex->rectangle.width - 2 &&
!_cogl_texture_set_region_from_bitmap (atlas->texture,
src_x + dst_width - 1, src_y,
atlas_tex->rectangle.x +
atlas_tex->rectangle.width - 1,
dst_y + atlas_tex->rectangle.y + 1,
1, dst_height,
bmp))
return FALSE;
/* Update the top edge pixels */
if (dst_y == 0 &&
!_cogl_texture_set_region_from_bitmap (atlas->texture,
src_x, src_y,
dst_x + atlas_tex->rectangle.x + 1,
atlas_tex->rectangle.y,
dst_width, 1,
bmp))
return FALSE;
/* Update the bottom edge pixels */
if (dst_y + dst_height == atlas_tex->rectangle.height - 2 &&
!_cogl_texture_set_region_from_bitmap (atlas->texture,
src_x, src_y + dst_height - 1,
dst_x + atlas_tex->rectangle.x + 1,
atlas_tex->rectangle.y +
atlas_tex->rectangle.height - 1,
dst_width, 1,
bmp))
return FALSE;
return TRUE;
}
static gboolean
_cogl_atlas_texture_set_region (CoglTexture *tex,
int src_x,
int src_y,
int dst_x,
int dst_y,
unsigned int dst_width,
unsigned int dst_height,
CoglBitmap *bmp)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* If the texture is in the atlas then we need to copy the edge
pixels to the border */
if (atlas_tex->atlas)
{
gboolean ret;
bmp = _cogl_bitmap_new_shared (bmp,
_cogl_bitmap_get_format (bmp) &
~COGL_PREMULT_BIT,
_cogl_bitmap_get_width (bmp),
_cogl_bitmap_get_height (bmp),
_cogl_bitmap_get_rowstride (bmp));
/* Upload the data ignoring the premult bit */
ret = _cogl_atlas_texture_set_region_with_border (atlas_tex,
src_x, src_y,
dst_x, dst_y,
dst_width, dst_height,
bmp);
cogl_object_unref (bmp);
return ret;
}
else
/* Otherwise we can just forward on to the sub texture */
return _cogl_texture_set_region_from_bitmap (atlas_tex->sub_texture,
src_x, src_y,
dst_x, dst_y,
dst_width, dst_height,
bmp);
}
static CoglPixelFormat
_cogl_atlas_texture_get_format (CoglTexture *tex)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* We don't want to forward this on the sub-texture because it isn't
the necessarily the same format. This will happen if the texture
isn't pre-multiplied */
return atlas_tex->format;
}
static GLenum
_cogl_atlas_texture_get_gl_format (CoglTexture *tex)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
return _cogl_texture_get_gl_format (atlas_tex->sub_texture);
}
static int
_cogl_atlas_texture_get_width (CoglTexture *tex)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
return cogl_texture_get_width (atlas_tex->sub_texture);
}
static int
_cogl_atlas_texture_get_height (CoglTexture *tex)
{
CoglAtlasTexture *atlas_tex = COGL_ATLAS_TEXTURE (tex);
/* Forward on to the sub texture */
return cogl_texture_get_height (atlas_tex->sub_texture);
}
static gboolean
_cogl_atlas_texture_can_use_format (CoglPixelFormat format)
{
/* We don't care about the ordering or the premult status and we can
accept RGBA or RGB textures. Although we could also accept
luminance and alpha only textures or 16-bit formats it seems that
if the application is explicitly using these formats then they've
got a reason to want the lower memory requirements so putting
them in the atlas might not be a good idea */
format &= ~(COGL_PREMULT_BIT | COGL_BGR_BIT | COGL_AFIRST_BIT);
return (format == COGL_PIXEL_FORMAT_RGB_888 ||
format == COGL_PIXEL_FORMAT_RGBA_8888);
}
CoglHandle
_cogl_atlas_texture_new_with_size (unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat internal_format)
{
CoglAtlasTexture *atlas_tex;
CoglAtlas *atlas;
GSList *l;
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
/* Don't put textures in the atlas if the user has explicitly
requested to disable it */
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_ATLAS)))
return COGL_INVALID_HANDLE;
/* We can't put the texture in the atlas if there are any special
flags. This precludes textures with COGL_TEXTURE_NO_ATLAS and
COGL_TEXTURE_NO_SLICING from being atlased */
if (flags)
return COGL_INVALID_HANDLE;
/* We can't atlas zero-sized textures because it breaks the atlas
data structure */
if (width < 1 || height < 1)
return COGL_INVALID_HANDLE;
/* If we can't use FBOs then it will be too slow to migrate textures
and we shouldn't use the atlas */
if (!cogl_features_available (COGL_FEATURE_OFFSCREEN))
return COGL_INVALID_HANDLE;
COGL_NOTE (ATLAS, "Adding texture of size %ix%i", width, height);
/* If the texture is in a strange format then we won't use it */
if (!_cogl_atlas_texture_can_use_format (internal_format))
{
COGL_NOTE (ATLAS, "Texture can not be added because the "
"format is unsupported");
return COGL_INVALID_HANDLE;
}
/* We need to allocate the texture now because we need the pointer
to set as the data for the rectangle in the atlas */
atlas_tex = g_new (CoglAtlasTexture, 1);
/* Mark it as having no atlas so we don't try to unref it in
_cogl_atlas_texture_post_reorganize_cb */
atlas_tex->atlas = NULL;
_cogl_texture_init (COGL_TEXTURE (atlas_tex),
&cogl_atlas_texture_vtable);
atlas_tex->sub_texture = COGL_INVALID_HANDLE;
/* Look for an existing atlas that can hold the texture */
for (l = ctx->atlases; l; l = l->next)
/* Try to make some space in the atlas for the texture */
if (_cogl_atlas_reserve_space (atlas = l->data,
/* Add two pixels for the border */
width + 2, height + 2,
atlas_tex))
{
cogl_object_ref (atlas);
break;
}
/* If we couldn't find a suitable atlas then start another */
if (l == NULL)
{
atlas = _cogl_atlas_texture_create_atlas ();
COGL_NOTE (ATLAS, "Created new atlas for textures: %p", atlas);
if (!_cogl_atlas_reserve_space (atlas,
/* Add two pixels for the border */
width + 2, height + 2,
atlas_tex))
{
/* Ok, this means we really can't add it to the atlas */
cogl_object_unref (atlas);
g_free (atlas_tex);
return COGL_INVALID_HANDLE;
}
}
atlas_tex->format = internal_format;
atlas_tex->atlas = atlas;
return _cogl_atlas_texture_handle_new (atlas_tex);
}
CoglHandle
_cogl_atlas_texture_new_from_bitmap (CoglBitmap *bmp,
CoglTextureFlags flags,
CoglPixelFormat internal_format)
{
CoglHandle atlas_tex_handle;
CoglAtlasTexture *atlas_tex;
CoglBitmap *dst_bmp;
CoglBitmap *override_bmp;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
int bmp_width;
int bmp_height;
CoglPixelFormat bmp_format;
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
g_return_val_if_fail (cogl_is_bitmap (bmp), COGL_INVALID_HANDLE);
bmp_width = _cogl_bitmap_get_width (bmp);
bmp_height = _cogl_bitmap_get_height (bmp);
bmp_format = _cogl_bitmap_get_format (bmp);
internal_format = _cogl_texture_determine_internal_format (bmp_format,
internal_format);
atlas_tex_handle = _cogl_atlas_texture_new_with_size (bmp_width, bmp_height,
flags, internal_format);
if (atlas_tex_handle == COGL_INVALID_HANDLE)
return COGL_INVALID_HANDLE;
atlas_tex = atlas_tex_handle;
dst_bmp = _cogl_texture_prepare_for_upload (bmp,
internal_format,
&internal_format,
&gl_intformat,
&gl_format,
&gl_type);
if (dst_bmp == NULL)
{
cogl_handle_unref (atlas_tex_handle);
return COGL_INVALID_HANDLE;
}
/* Make another bitmap so that we can override the format */
override_bmp = _cogl_bitmap_new_shared (dst_bmp,
_cogl_bitmap_get_format (dst_bmp) &
~COGL_PREMULT_BIT,
_cogl_bitmap_get_width (dst_bmp),
_cogl_bitmap_get_height (dst_bmp),
_cogl_bitmap_get_rowstride (dst_bmp));
cogl_object_unref (dst_bmp);
/* Defer to set_region so that we can share the code for copying the
edge pixels to the border. We don't want to pass the actual
format of the converted texture because otherwise it will get
unpremultiplied. */
_cogl_atlas_texture_set_region_with_border (atlas_tex,
0, /* src_x */
0, /* src_y */
0, /* dst_x */
0, /* dst_y */
bmp_width, /* dst_width */
bmp_height, /* dst_height */
override_bmp);
cogl_object_unref (override_bmp);
return atlas_tex_handle;
}
void
_cogl_atlas_texture_add_reorganize_callback (GHookFunc callback,
void *user_data)
{
GHook *hook;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
hook = g_hook_alloc (&ctx->atlas_reorganize_callbacks);
hook->func = callback;
hook->data = user_data;
g_hook_prepend (&ctx->atlas_reorganize_callbacks, hook);
}
void
_cogl_atlas_texture_remove_reorganize_callback (GHookFunc callback,
void *user_data)
{
GHook *hook;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
hook = g_hook_find_func_data (&ctx->atlas_reorganize_callbacks,
FALSE,
callback,
user_data);
if (hook)
g_hook_destroy_link (&ctx->atlas_reorganize_callbacks, hook);
}
static const CoglTextureVtable
cogl_atlas_texture_vtable =
{
_cogl_atlas_texture_set_region,
NULL, /* get_data */
_cogl_atlas_texture_foreach_sub_texture_in_region,
_cogl_atlas_texture_get_max_waste,
_cogl_atlas_texture_is_sliced,
_cogl_atlas_texture_can_hardware_repeat,
_cogl_atlas_texture_transform_coords_to_gl,
_cogl_atlas_texture_transform_quad_coords_to_gl,
_cogl_atlas_texture_get_gl_texture,
_cogl_atlas_texture_set_filters,
_cogl_atlas_texture_pre_paint,
_cogl_atlas_texture_ensure_non_quad_rendering,
_cogl_atlas_texture_set_wrap_mode_parameters,
_cogl_atlas_texture_get_format,
_cogl_atlas_texture_get_gl_format,
_cogl_atlas_texture_get_width,
_cogl_atlas_texture_get_height,
NULL /* is_foreign */
};

589
clutter/cogl/cogl/cogl-atlas.c
View File

@ -1,589 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010,2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-atlas.h"
#include "cogl-rectangle-map.h"
#include "cogl-context-private.h"
#include "cogl-texture-private.h"
#include "cogl-texture-2d-private.h"
#include "cogl-texture-driver.h"
#include "cogl-pipeline-opengl-private.h"
#include "cogl-debug.h"
#include "cogl-framebuffer-private.h"
#include "cogl-blit.h"
#include <stdlib.h>
static void _cogl_atlas_free (CoglAtlas *atlas);
COGL_OBJECT_INTERNAL_DEFINE (Atlas, atlas);
CoglAtlas *
_cogl_atlas_new (CoglPixelFormat texture_format,
CoglAtlasFlags flags,
CoglAtlasUpdatePositionCallback update_position_cb)
{
CoglAtlas *atlas = g_new (CoglAtlas, 1);
atlas->update_position_cb = update_position_cb;
atlas->map = NULL;
atlas->texture = NULL;
atlas->flags = flags;
atlas->texture_format = texture_format;
g_hook_list_init (&atlas->pre_reorganize_callbacks, sizeof (GHook));
g_hook_list_init (&atlas->post_reorganize_callbacks, sizeof (GHook));
return _cogl_atlas_object_new (atlas);
}
static void
_cogl_atlas_free (CoglAtlas *atlas)
{
COGL_NOTE (ATLAS, "%p: Atlas destroyed", atlas);
if (atlas->texture)
cogl_handle_unref (atlas->texture);
if (atlas->map)
_cogl_rectangle_map_free (atlas->map);
g_hook_list_clear (&atlas->pre_reorganize_callbacks);
g_hook_list_clear (&atlas->post_reorganize_callbacks);
g_free (atlas);
}
typedef struct _CoglAtlasRepositionData
{
/* The current user data for this texture */
void *user_data;
/* The old and new positions of the texture */
CoglRectangleMapEntry old_position;
CoglRectangleMapEntry new_position;
} CoglAtlasRepositionData;
static void
_cogl_atlas_migrate (CoglAtlas *atlas,
unsigned int n_textures,
CoglAtlasRepositionData *textures,
CoglHandle old_texture,
CoglHandle new_texture,
void *skip_user_data)
{
unsigned int i;
CoglBlitData blit_data;
/* If the 'disable migrate' flag is set then we won't actually copy
the textures to their new location. Instead we'll just invoke the
callback to update the position */
if ((atlas->flags & COGL_ATLAS_DISABLE_MIGRATION))
for (i = 0; i < n_textures; i++)
/* Update the texture position */
atlas->update_position_cb (textures[i].user_data,
new_texture,
&textures[i].new_position);
else
{
_cogl_blit_begin (&blit_data, new_texture, old_texture);
for (i = 0; i < n_textures; i++)
{
/* Skip the texture that is being added because it doesn't contain
any data yet */
if (textures[i].user_data != skip_user_data)
_cogl_blit (&blit_data,
textures[i].old_position.x,
textures[i].old_position.y,
textures[i].new_position.x,
textures[i].new_position.y,
textures[i].new_position.width,
textures[i].new_position.height);
/* Update the texture position */
atlas->update_position_cb (textures[i].user_data,
new_texture,
&textures[i].new_position);
}
_cogl_blit_end (&blit_data);
}
}
typedef struct _CoglAtlasGetRectanglesData
{
CoglAtlasRepositionData *textures;
/* Number of textures found so far */
unsigned int n_textures;
} CoglAtlasGetRectanglesData;
static void
_cogl_atlas_get_rectangles_cb (const CoglRectangleMapEntry *rectangle,
void *rect_data,
void *user_data)
{
CoglAtlasGetRectanglesData *data = user_data;
data->textures[data->n_textures].old_position = *rectangle;
data->textures[data->n_textures++].user_data = rect_data;
}
static void
_cogl_atlas_get_next_size (unsigned int *map_width,
unsigned int *map_height)
{
/* Double the size of the texture by increasing whichever dimension
is smaller */
if (*map_width < *map_height)
*map_width <<= 1;
else
*map_height <<= 1;
}
static void
_cogl_atlas_get_initial_size (CoglPixelFormat format,
unsigned int *map_width,
unsigned int *map_height)
{
unsigned int size;
GLenum gl_intformat;
GLenum gl_type;
_cogl_pixel_format_to_gl (format,
&gl_intformat,
NULL, /* gl_format */
&gl_type);
/* At least on Intel hardware, the texture size will be rounded up
to at least 1MB so we might as well try to aim for that as an
initial minimum size. If the format is only 1 byte per pixel we
can use 1024x1024, otherwise we'll assume it will take 4 bytes
per pixel and use 512x512. */
if (_cogl_get_format_bpp (format) == 1)
size = 1024;
else
size = 512;
/* Some platforms might not support this large size so we'll
decrease the size until it can */
while (size > 1 &&
!_cogl_texture_driver_size_supported (GL_TEXTURE_2D,
gl_intformat,
gl_type,
size, size))
size >>= 1;
*map_width = size;
*map_height = size;
}
static CoglRectangleMap *
_cogl_atlas_create_map (CoglPixelFormat format,
unsigned int map_width,
unsigned int map_height,
unsigned int n_textures,
CoglAtlasRepositionData *textures)
{
GLenum gl_intformat;
GLenum gl_type;
_cogl_pixel_format_to_gl (format,
&gl_intformat,
NULL, /* gl_format */
&gl_type);
/* Keep trying increasingly larger atlases until we can fit all of
the textures */
while (_cogl_texture_driver_size_supported (GL_TEXTURE_2D,
gl_intformat,
gl_type,
map_width, map_height))
{
CoglRectangleMap *new_atlas = _cogl_rectangle_map_new (map_width,
map_height,
NULL);
unsigned int i;
COGL_NOTE (ATLAS, "Trying to resize the atlas to %ux%u",
map_width, map_height);
/* Add all of the textures and keep track of the new position */
for (i = 0; i < n_textures; i++)
if (!_cogl_rectangle_map_add (new_atlas,
textures[i].old_position.width,
textures[i].old_position.height,
textures[i].user_data,
&textures[i].new_position))
break;
/* If the atlas can contain all of the textures then we have a
winner */
if (i >= n_textures)
return new_atlas;
else
COGL_NOTE (ATLAS, "Atlas size abandoned after trying "
"%u out of %u textures",
i, n_textures);
_cogl_rectangle_map_free (new_atlas);
_cogl_atlas_get_next_size (&map_width, &map_height);
}
/* If we get here then there's no atlas that can accommodate all of
the rectangles */
return NULL;
}
static CoglHandle
_cogl_atlas_create_texture (CoglAtlas *atlas,
int width,
int height)
{
CoglHandle tex;
if ((atlas->flags & COGL_ATLAS_CLEAR_TEXTURE))
{
guint8 *clear_data;
CoglBitmap *clear_bmp;
int bpp = _cogl_get_format_bpp (atlas->texture_format);
/* Create a buffer of zeroes to initially clear the texture */
clear_data = g_malloc0 (width * height * bpp);
clear_bmp = _cogl_bitmap_new_from_data (clear_data,
atlas->texture_format,
width,
height,
width * bpp,
(CoglBitmapDestroyNotify) g_free,
NULL);
tex = _cogl_texture_2d_new_from_bitmap (clear_bmp, COGL_TEXTURE_NONE,
atlas->texture_format);
cogl_object_unref (clear_bmp);
}
else
tex = _cogl_texture_2d_new_with_size (width, height, COGL_TEXTURE_NONE,
atlas->texture_format);
return tex;
}
static int
_cogl_atlas_compare_size_cb (const void *a,
const void *b)
{
const CoglAtlasRepositionData *ta = a;
const CoglAtlasRepositionData *tb = b;
unsigned int a_size, b_size;
a_size = ta->old_position.width * ta->old_position.height;
b_size = tb->old_position.width * tb->old_position.height;
return a_size < b_size ? 1 : a_size > b_size ? -1 : 0;
}
static void
_cogl_atlas_notify_pre_reorganize (CoglAtlas *atlas)
{
g_hook_list_invoke (&atlas->pre_reorganize_callbacks, FALSE);
}
static void
_cogl_atlas_notify_post_reorganize (CoglAtlas *atlas)
{
g_hook_list_invoke (&atlas->post_reorganize_callbacks, FALSE);
}
gboolean
_cogl_atlas_reserve_space (CoglAtlas *atlas,
unsigned int width,
unsigned int height,
void *user_data)
{
CoglAtlasGetRectanglesData data;
CoglRectangleMap *new_map;
CoglHandle new_tex;
unsigned int map_width, map_height;
gboolean ret;
CoglRectangleMapEntry new_position;
/* Check if we can fit the rectangle into the existing map */
if (atlas->map &&
_cogl_rectangle_map_add (atlas->map, width, height,
user_data,
&new_position))
{
COGL_NOTE (ATLAS, "%p: Atlas is %ix%i, has %i textures and is %i%% waste",
atlas,
_cogl_rectangle_map_get_width (atlas->map),
_cogl_rectangle_map_get_height (atlas->map),
_cogl_rectangle_map_get_n_rectangles (atlas->map),
/* waste as a percentage */
_cogl_rectangle_map_get_remaining_space (atlas->map) *
100 / (_cogl_rectangle_map_get_width (atlas->map) *
_cogl_rectangle_map_get_height (atlas->map)));
atlas->update_position_cb (user_data,
atlas->texture,
&new_position);
return TRUE;
}
/* If we make it here then we need to reorganize the atlas. First
we'll notify any users of the atlas that this is going to happen
so that for example in CoglAtlasTexture it can notify that the
storage has changed and cause a flush */
_cogl_atlas_notify_pre_reorganize (atlas);
/* Get an array of all the textures currently in the atlas. */
data.n_textures = 0;
if (atlas->map == NULL)
data.textures = g_malloc (sizeof (CoglAtlasRepositionData));
else
{
unsigned int n_rectangles =
_cogl_rectangle_map_get_n_rectangles (atlas->map);
data.textures = g_malloc (sizeof (CoglAtlasRepositionData) *
(n_rectangles + 1));
_cogl_rectangle_map_foreach (atlas->map,
_cogl_atlas_get_rectangles_cb,
&data);
}
/* Add the new rectangle as a dummy texture so that it can be
positioned with the rest */
data.textures[data.n_textures].old_position.x = 0;
data.textures[data.n_textures].old_position.y = 0;
data.textures[data.n_textures].old_position.width = width;
data.textures[data.n_textures].old_position.height = height;
data.textures[data.n_textures++].user_data = user_data;
/* The atlasing algorithm works a lot better if the rectangles are
added in decreasing order of size so we'll first sort the
array */
qsort (data.textures, data.n_textures,
sizeof (CoglAtlasRepositionData),
_cogl_atlas_compare_size_cb);
/* Try to create a new atlas that can contain all of the textures */
if (atlas->map)
{
map_width = _cogl_rectangle_map_get_width (atlas->map);
map_height = _cogl_rectangle_map_get_height (atlas->map);
/* If there is enough space in for the new rectangle in the
existing atlas with at least 6% waste we'll start with the
same size, otherwise we'll immediately double it */
if ((map_width * map_height -
_cogl_rectangle_map_get_remaining_space (atlas->map) +
width * height) * 53 / 50 >
map_width * map_height)
_cogl_atlas_get_next_size (&map_width, &map_height);
}
else
_cogl_atlas_get_initial_size (atlas->texture_format,
&map_width, &map_height);
new_map = _cogl_atlas_create_map (atlas->texture_format,
map_width, map_height,
data.n_textures, data.textures);
/* If we can't create a map with the texture then give up */
if (new_map == NULL)
{
COGL_NOTE (ATLAS, "%p: Could not fit texture in the atlas", atlas);
ret = FALSE;
}
/* We need to migrate the existing textures into a new texture */
else if ((new_tex = _cogl_atlas_create_texture
(atlas,
_cogl_rectangle_map_get_width (new_map),
_cogl_rectangle_map_get_height (new_map))) == COGL_INVALID_HANDLE)
{
COGL_NOTE (ATLAS, "%p: Could not create a CoglTexture2D", atlas);
_cogl_rectangle_map_free (new_map);
ret = FALSE;
}
else
{
int waste;
COGL_NOTE (ATLAS,
"%p: Atlas %s with size %ix%i",
atlas,
atlas->map == NULL ||
_cogl_rectangle_map_get_width (atlas->map) !=
_cogl_rectangle_map_get_width (new_map) ||
_cogl_rectangle_map_get_height (atlas->map) !=
_cogl_rectangle_map_get_height (new_map) ?
"resized" : "reorganized",
_cogl_rectangle_map_get_width (new_map),
_cogl_rectangle_map_get_height (new_map));
if (atlas->map)
{
/* Move all the textures to the right position in the new
texture. This will also update the texture's rectangle */
_cogl_atlas_migrate (atlas,
data.n_textures,
data.textures,
atlas->texture,
new_tex,
user_data);
_cogl_rectangle_map_free (atlas->map);
cogl_handle_unref (atlas->texture);
}
else
/* We know there's only one texture so we can just directly
update the rectangle from its new position */
atlas->update_position_cb (data.textures[0].user_data,
new_tex,
&data.textures[0].new_position);
atlas->map = new_map;
atlas->texture = new_tex;
waste = (_cogl_rectangle_map_get_remaining_space (atlas->map) *
100 / (_cogl_rectangle_map_get_width (atlas->map) *
_cogl_rectangle_map_get_height (atlas->map)));
COGL_NOTE (ATLAS, "%p: Atlas is %ix%i, has %i textures and is %i%% waste",
atlas,
_cogl_rectangle_map_get_width (atlas->map),
_cogl_rectangle_map_get_height (atlas->map),
_cogl_rectangle_map_get_n_rectangles (atlas->map),
waste);
ret = TRUE;
}
g_free (data.textures);
_cogl_atlas_notify_post_reorganize (atlas);
return ret;
}
void
_cogl_atlas_remove (CoglAtlas *atlas,
const CoglRectangleMapEntry *rectangle)
{
_cogl_rectangle_map_remove (atlas->map, rectangle);
COGL_NOTE (ATLAS, "%p: Removed rectangle sized %ix%i",
atlas,
rectangle->width,
rectangle->height);
COGL_NOTE (ATLAS, "%p: Atlas is %ix%i, has %i textures and is %i%% waste",
atlas,
_cogl_rectangle_map_get_width (atlas->map),
_cogl_rectangle_map_get_height (atlas->map),
_cogl_rectangle_map_get_n_rectangles (atlas->map),
_cogl_rectangle_map_get_remaining_space (atlas->map) *
100 / (_cogl_rectangle_map_get_width (atlas->map) *
_cogl_rectangle_map_get_height (atlas->map)));
};
CoglHandle
_cogl_atlas_copy_rectangle (CoglAtlas *atlas,
unsigned int x,
unsigned int y,
unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat format)
{
CoglHandle tex;
CoglBlitData blit_data;
/* Create a new texture at the right size */
tex = cogl_texture_new_with_size (width, height, flags, format);
/* Blit the data out of the atlas to the new texture. If FBOs
aren't available this will end up having to copy the entire
atlas texture */
_cogl_blit_begin (&blit_data, tex, atlas->texture);
_cogl_blit (&blit_data,
x, y,
0, 0,
width, height);
_cogl_blit_end (&blit_data);
return tex;
}
void
_cogl_atlas_add_reorganize_callback (CoglAtlas *atlas,
GHookFunc pre_callback,
GHookFunc post_callback,
void *user_data)
{
if (pre_callback)
{
GHook *hook = g_hook_alloc (&atlas->post_reorganize_callbacks);
hook->func = pre_callback;
hook->data = user_data;
g_hook_prepend (&atlas->pre_reorganize_callbacks, hook);
}
if (post_callback)
{
GHook *hook = g_hook_alloc (&atlas->pre_reorganize_callbacks);
hook->func = post_callback;
hook->data = user_data;
g_hook_prepend (&atlas->post_reorganize_callbacks, hook);
}
}
void
_cogl_atlas_remove_reorganize_callback (CoglAtlas *atlas,
GHookFunc pre_callback,
GHookFunc post_callback,
void *user_data)
{
if (pre_callback)
{
GHook *hook = g_hook_find_func_data (&atlas->pre_reorganize_callbacks,
FALSE,
pre_callback,
user_data);
if (hook)
g_hook_destroy_link (&atlas->pre_reorganize_callbacks, hook);
}
if (post_callback)
{
GHook *hook = g_hook_find_func_data (&atlas->post_reorganize_callbacks,
FALSE,
post_callback,
user_data);
if (hook)
g_hook_destroy_link (&atlas->post_reorganize_callbacks, hook);
}
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010,2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __COGL_ATLAS_H
#define __COGL_ATLAS_H
#include "cogl-rectangle-map.h"
#include "cogl-object-private.h"
typedef void
(* CoglAtlasUpdatePositionCallback) (void *user_data,
CoglHandle new_texture,
const CoglRectangleMapEntry *rect);
typedef enum
{
COGL_ATLAS_CLEAR_TEXTURE = (1 << 0),
COGL_ATLAS_DISABLE_MIGRATION = (1 << 1)
} CoglAtlasFlags;
typedef struct _CoglAtlas CoglAtlas;
#define COGL_ATLAS(object) ((CoglAtlas *) object)
struct _CoglAtlas
{
CoglObject _parent;
CoglRectangleMap *map;
CoglHandle texture;
CoglPixelFormat texture_format;
CoglAtlasFlags flags;
CoglAtlasUpdatePositionCallback update_position_cb;
GHookList pre_reorganize_callbacks;
GHookList post_reorganize_callbacks;
};
CoglAtlas *
_cogl_atlas_new (CoglPixelFormat texture_format,
CoglAtlasFlags flags,
CoglAtlasUpdatePositionCallback update_position_cb);
gboolean
_cogl_atlas_reserve_space (CoglAtlas *atlas,
unsigned int width,
unsigned int height,
void *user_data);
void
_cogl_atlas_remove (CoglAtlas *atlas,
const CoglRectangleMapEntry *rectangle);
CoglHandle
_cogl_atlas_copy_rectangle (CoglAtlas *atlas,
unsigned int x,
unsigned int y,
unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat format);
void
_cogl_atlas_add_reorganize_callback (CoglAtlas *atlas,
GHookFunc pre_callback,
GHookFunc post_callback,
void *user_data);
void
_cogl_atlas_remove_reorganize_callback (CoglAtlas *atlas,
GHookFunc pre_callback,
GHookFunc post_callback,
void *user_data);
#endif /* __COGL_ATLAS_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_ATTRIBUTE_PRIVATE_H
#define __COGL_ATTRIBUTE_PRIVATE_H
#include "cogl-object-private.h"
#include "cogl-attribute.h"
typedef enum
{
COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY,
COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY,
COGL_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY,
COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY,
COGL_ATTRIBUTE_NAME_ID_CUSTOM_ARRAY
} CoglAttributeNameID;
struct _CoglAttribute
{
CoglObject _parent;
CoglVertexArray *array;
char *name;
CoglAttributeNameID name_id;
gsize stride;
gsize offset;
int n_components;
CoglAttributeType type;
gboolean normalized;
unsigned int texture_unit;
int immutable_ref;
};
typedef enum
{
COGL_DRAW_SKIP_JOURNAL_FLUSH = 1 << 0,
COGL_DRAW_SKIP_PIPELINE_VALIDATION = 1 << 1,
COGL_DRAW_SKIP_FRAMEBUFFER_FLUSH = 1 << 2,
/* When flushing from the journal the logged pipeline will already
contain the legacy state overrides so we don't want to apply them
again when we flush the pipeline for drawing */
COGL_DRAW_SKIP_LEGACY_STATE = 1 << 3,
/* By default the vertex attribute drawing code will assume that if
there is a color attribute array enabled then we can't determine
if the colors will be opaque so we need to enabling
blending. However when drawing from the journal we know what the
contents of the color array is so we can override this by passing
this flag. */
COGL_DRAW_COLOR_ATTRIBUTE_IS_OPAQUE = 1 << 4
} CoglDrawFlags;
CoglAttribute *
_cogl_attribute_immutable_ref (CoglAttribute *attribute);
void
_cogl_attribute_immutable_unref (CoglAttribute *attribute);
void
_cogl_draw_attributes_array (CoglVerticesMode mode,
int first_vertex,
int n_vertices,
CoglAttribute **attributes,
CoglDrawFlags flags);
void
_cogl_draw_indexed_attributes_array (CoglVerticesMode mode,
int first_vertex,
int n_vertices,
CoglIndices *indices,
CoglAttribute **attributes,
CoglDrawFlags flags);
void
_cogl_attribute_disable_cached_arrays (void);
#endif /* __COGL_ATTRIBUTE_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_ATTRIBUTE_H__
#define __COGL_ATTRIBUTE_H__
#include <cogl/cogl-vertex-array.h>
#include <cogl/cogl-indices.h>
G_BEGIN_DECLS
/**
* SECTION:cogl-attribute
* @short_description: Functions for declaring and drawing vertex
* attributes
*
* FIXME
*/
typedef struct _CoglAttribute CoglAttribute;
/**
* cogl_attribute_new:
* @array: The #CoglVertexArray containing the actual attribute data
* @name: The name of the attribute (used to reference it from GLSL)
* @stride: The number of bytes to jump to get to the next attribute
* value for the next vertex. (Usually
* <pre>sizeof (MyVertex)</pre>)
* @offset: The byte offset from the start of @array for the first
* attribute value. (Usually
* <pre>offsetof (MyVertex, component0)</pre>
* @components: The number of components (e.g. 4 for an rgba color or
* 3 for and (x,y,z) position)
* @type: FIXME
*
* Describes the layout for a list of vertex attribute values (For
* example, a list of texture coordinates or colors).
*
* The @name is used to access the attribute inside a GLSL vertex
* shader and there are some special names you should use if they are
* applicable:
* <itemizedlist>
* <listitem>"cogl_position_in" (used for vertex positions)</listitem>
* <listitem>"cogl_color_in" (used for vertex colors)</listitem>
* <listitem>"cogl_tex_coord0_in", "cogl_tex_coord1", ...
* (used for vertex texture coordinates)</listitem>
* <listitem>"cogl_normal_in" (used for vertex normals)</listitem>
* </itemizedlist>
*
* The attribute values corresponding to different vertices can either
* be tightly packed or interleaved with other attribute values. For
* example it's common to define a structure for a single vertex like:
* |[
* typedef struct
* {
* float x, y, z; /<!-- -->* position attribute *<!-- -->/
* float s, t; /<!-- -->* texture coordinate attribute *<!-- -->/
* } MyVertex;
* ]|
*
* And then create an array of vertex data something like:
* |[
* MyVertex vertices[100] = { .... }
* ]|
*
* In this case, to describe either the position or texture coordinate
* attribute you have to move <pre>sizeof (MyVertex)</pre> bytes to
* move from one vertex to the next. This is called the attribute
* @stride. If you weren't interleving attributes and you instead had
* a packed array of float x, y pairs then the attribute stride would
* be <pre>(2 * sizeof (float))</pre>. So the @stride is the number of
* bytes to move to find the attribute value of the next vertex.
*
* Normally a list of attributes starts at the beginning of an array.
* So for the <pre>MyVertex</pre> example above the @offset is the
* offset inside the <pre>MyVertex</pre> structure to the first
* component of the attribute. For the texture coordinate attribute
* the offset would be <pre>offsetof (MyVertex, s)</pre> or instead of
* using the offsetof macro you could use <pre>sizeof (float) * 3</pre>.
* If you've divided your @array into blocks of non-interleved
* attributes then you will need to calculate the @offset as the
* number of bytes in blocks preceding the attribute you're
* describing.
*
* An attribute often has more than one component. For example a color
* is often comprised of 4 red, green, blue and alpha @components, and a
* position may be comprised of 2 x and y @components. You should aim
* to keep the number of components to a minimum as more components
* means more data needs to be mapped into the GPU which can be a
* bottlneck when dealing with a large number of vertices.
*
* Finally you need to specify the component data type. Here you
* should aim to use the smallest type that meets your precision
* requirements. Again the larger the type then more data needs to be
* mapped into the GPU which can be a bottlneck when dealing with
* a large number of vertices.
*
* Returns: A newly allocated #CoglAttribute describing the
* layout for a list of attribute values stored in @array.
*
* Since: 1.4
* Stability: Unstable
*/
/* XXX: look for a precedent to see if the stride/offset args should
* have a different order. */
CoglAttribute *
cogl_attribute_new (CoglVertexArray *array,
const char *name,
gsize stride,
gsize offset,
int components,
CoglAttributeType type);
/**
* cogl_is_attribute:
* @object: A #CoglObject
*
* Gets whether the given object references a #CoglAttribute.
*
* Return value: %TRUE if the handle references a #CoglAttribute,
* %FALSE otherwise
*/
gboolean
cogl_is_attribute (void *object);
void
cogl_draw_attributes (CoglVerticesMode mode,
int first_vertex,
int n_vertices,
...) G_GNUC_NULL_TERMINATED;
void
cogl_draw_attributes_array (CoglVerticesMode mode,
int first_vertex,
int n_vertices,
CoglAttribute **attributes);
void
cogl_draw_indexed_attributes (CoglVerticesMode mode,
int first_vertex,
int n_vertices,
CoglIndices *indices,
...) G_GNUC_NULL_TERMINATED;
void
cogl_draw_indexed_attributes_array (CoglVerticesMode mode,
int first_vertex,
int n_vertices,
CoglIndices *indices,
CoglAttribute **attributes);
G_END_DECLS
#endif /* __COGL_ATTRIBUTE_H__ */

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@ -1,582 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-bitmap-private.h"
#include <string.h>
/* TO rgba */
inline static void
_cogl_g_to_rgba (const guint8 *src, guint8 *dst)
{
dst[0] = src[0];
dst[1] = src[0];
dst[2] = src[0];
dst[3] = 255;
}
inline static void
_cogl_rgb_to_rgba (const guint8 *src, guint8 *dst)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = 255;
}
inline static void
_cogl_bgr_to_rgba (const guint8 *src, guint8 *dst)
{
dst[0] = src[2];
dst[1] = src[1];
dst[2] = src[0];
dst[3] = 255;
}
inline static void
_cogl_bgra_to_rgba (const guint8 *src, guint8 *dst)
{
dst[0] = src[2];
dst[1] = src[1];
dst[2] = src[0];
dst[3] = src[3];
}
inline static void
_cogl_argb_to_rgba (const guint8 *src, guint8 *dst)
{
dst[0] = src[1];
dst[1] = src[2];
dst[2] = src[3];
dst[3] = src[0];
}
inline static void
_cogl_abgr_to_rgba (const guint8 *src, guint8 *dst)
{
dst[0] = src[3];
dst[1] = src[2];
dst[2] = src[1];
dst[3] = src[0];
}
inline static void
_cogl_rgba_to_rgba (const guint8 *src, guint8 *dst)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
}
/* FROM rgba */
inline static void
_cogl_rgba_to_g (const guint8 *src, guint8 *dst)
{
dst[0] = (src[0] + src[1] + src[2]) / 3;
}
inline static void
_cogl_rgba_to_rgb (const guint8 *src, guint8 *dst)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
}
inline static void
_cogl_rgba_to_bgr (const guint8 *src, guint8 *dst)
{
dst[0] = src[2];
dst[1] = src[1];
dst[2] = src[0];
}
inline static void
_cogl_rgba_to_bgra (const guint8 *src, guint8 *dst)
{
dst[0] = src[2];
dst[1] = src[1];
dst[2] = src[0];
dst[3] = src[3];
}
inline static void
_cogl_rgba_to_argb (const guint8 *src, guint8 *dst)
{
dst[0] = src[3];
dst[1] = src[0];
dst[2] = src[1];
dst[3] = src[2];
}
inline static void
_cogl_rgba_to_abgr (const guint8 *src, guint8 *dst)
{
dst[0] = src[3];
dst[1] = src[2];
dst[2] = src[1];
dst[3] = src[0];
}
/* (Un)Premultiplication */
inline static void
_cogl_unpremult_alpha_0 (guint8 *dst)
{
dst[0] = 0;
dst[1] = 0;
dst[2] = 0;
dst[3] = 0;
}
inline static void
_cogl_unpremult_alpha_last (guint8 *dst)
{
guint8 alpha = dst[3];
dst[0] = (dst[0] * 255) / alpha;
dst[1] = (dst[1] * 255) / alpha;
dst[2] = (dst[2] * 255) / alpha;
}
inline static void
_cogl_unpremult_alpha_first (guint8 *dst)
{
guint8 alpha = dst[0];
dst[1] = (dst[1] * 255) / alpha;
dst[2] = (dst[2] * 255) / alpha;
dst[3] = (dst[3] * 255) / alpha;
}
/* No division form of floor((c*a + 128)/255) (I first encountered
* this in the RENDER implementation in the X server.) Being exact
* is important for a == 255 - we want to get exactly c.
*/
#define MULT(d,a,t) \
G_STMT_START { \
t = d * a + 128; \
d = ((t >> 8) + t) >> 8; \
} G_STMT_END
inline static void
_cogl_premult_alpha_last (guint8 *dst)
{
guint8 alpha = dst[3];
/* Using a separate temporary per component has given slightly better
* code generation with GCC in the past; it shouldn't do any worse in
* any case.
*/
unsigned int t1, t2, t3;
MULT(dst[0], alpha, t1);
MULT(dst[1], alpha, t2);
MULT(dst[2], alpha, t3);
}
inline static void
_cogl_premult_alpha_first (guint8 *dst)
{
guint8 alpha = dst[0];
unsigned int t1, t2, t3;
MULT(dst[1], alpha, t1);
MULT(dst[2], alpha, t2);
MULT(dst[3], alpha, t3);
}
#undef MULT
/* Use the SSE optimized version to premult four pixels at once when
it is available. The same assembler code works for x86 and x86-64
because it doesn't refer to any non-SSE registers directly */
#if defined(__SSE2__) && defined(__GNUC__) \
&& (defined(__x86_64) || defined(__i386))
#define COGL_USE_PREMULT_SSE2
#endif
#ifdef COGL_USE_PREMULT_SSE2
inline static void
_cogl_premult_alpha_last_four_pixels_sse2 (guint8 *p)
{
/* 8 copies of 128 used below */
static const gint16 eight_halves[8] __attribute__ ((aligned (16))) =
{ 128, 128, 128, 128, 128, 128, 128, 128 };
/* Mask of the rgb components of the four pixels */
static const gint8 just_rgb[16] __attribute__ ((aligned (16))) =
{ 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00,
0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00 };
/* Each SSE register only holds two pixels because we need to work
with 16-bit intermediate values. We still do four pixels by
interleaving two registers in the hope that it will pipeline
better */
asm (/* Load eight_halves into xmm5 for later */
"movdqa (%1), %%xmm5\n"
/* Clear xmm3 */
"pxor %%xmm3, %%xmm3\n"
/* Load two pixels from p into the low half of xmm0 */
"movlps (%0), %%xmm0\n"
/* Load the next set of two pixels from p into the low half of xmm1 */
"movlps 8(%0), %%xmm1\n"
/* Unpack 8 bytes from the low quad-words in each register to 8
16-bit values */
"punpcklbw %%xmm3, %%xmm0\n"
"punpcklbw %%xmm3, %%xmm1\n"
/* Copy alpha values of the first pixel in xmm0 to all
components of the first pixel in xmm2 */
"pshuflw $255, %%xmm0, %%xmm2\n"
/* same for xmm1 and xmm3 */
"pshuflw $255, %%xmm1, %%xmm3\n"
/* The above also copies the second pixel directly so we now
want to replace the RGB components with copies of the alpha
components */
"pshufhw $255, %%xmm2, %%xmm2\n"
"pshufhw $255, %%xmm3, %%xmm3\n"
/* Multiply the rgb components by the alpha */
"pmullw %%xmm2, %%xmm0\n"
"pmullw %%xmm3, %%xmm1\n"
/* Add 128 to each component */
"paddw %%xmm5, %%xmm0\n"
"paddw %%xmm5, %%xmm1\n"
/* Copy the results to temporary registers xmm4 and xmm5 */
"movdqa %%xmm0, %%xmm4\n"
"movdqa %%xmm1, %%xmm5\n"
/* Divide the results by 256 */
"psrlw $8, %%xmm0\n"
"psrlw $8, %%xmm1\n"
/* Add the temporaries back in */
"paddw %%xmm4, %%xmm0\n"
"paddw %%xmm5, %%xmm1\n"
/* Divide again */
"psrlw $8, %%xmm0\n"
"psrlw $8, %%xmm1\n"
/* Pack the results back as bytes */
"packuswb %%xmm1, %%xmm0\n"
/* Load just_rgb into xmm3 for later */
"movdqa (%2), %%xmm3\n"
/* Reload all four pixels into xmm2 */
"movups (%0), %%xmm2\n"
/* Mask out the alpha from the results */
"andps %%xmm3, %%xmm0\n"
/* Mask out the RGB from the original four pixels */
"andnps %%xmm2, %%xmm3\n"
/* Combine the two to get the right alpha values */
"orps %%xmm3, %%xmm0\n"
/* Write to memory */
"movdqu %%xmm0, (%0)\n"
: /* no outputs */
: "r" (p), "r" (eight_halves), "r" (just_rgb)
: "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5");
}
#endif /* COGL_USE_PREMULT_SSE2 */
gboolean
_cogl_bitmap_fallback_can_convert (CoglPixelFormat src, CoglPixelFormat dst)
{
if (src == dst)
return FALSE;
switch (src & COGL_UNORDERED_MASK)
{
case COGL_PIXEL_FORMAT_G_8:
case COGL_PIXEL_FORMAT_24:
case COGL_PIXEL_FORMAT_32:
if ((dst & COGL_UNORDERED_MASK) != COGL_PIXEL_FORMAT_24 &&
(dst & COGL_UNORDERED_MASK) != COGL_PIXEL_FORMAT_32 &&
(dst & COGL_UNORDERED_MASK) != COGL_PIXEL_FORMAT_G_8)
return FALSE;
break;
default:
return FALSE;
}
return TRUE;
}
gboolean
_cogl_bitmap_fallback_can_unpremult (CoglPixelFormat format)
{
return ((format & COGL_UNORDERED_MASK) == COGL_PIXEL_FORMAT_32);
}
gboolean
_cogl_bitmap_fallback_can_premult (CoglPixelFormat format)
{
return ((format & COGL_UNORDERED_MASK) == COGL_PIXEL_FORMAT_32);
}
CoglBitmap *
_cogl_bitmap_fallback_convert (CoglBitmap *src_bmp,
CoglPixelFormat dst_format)
{
guint8 *src_data;
guint8 *dst_data;
guint8 *src;
guint8 *dst;
int src_bpp;
int dst_bpp;
int src_rowstride;
int dst_rowstride;
int x,y;
guint8 temp_rgba[4] = {0,0,0,0};
int width, height;
CoglPixelFormat src_format;
src_format = _cogl_bitmap_get_format (src_bmp);
src_rowstride = _cogl_bitmap_get_rowstride (src_bmp);
width = _cogl_bitmap_get_width (src_bmp);
height = _cogl_bitmap_get_height (src_bmp);
/* Make sure conversion supported */
if (!_cogl_bitmap_fallback_can_convert (src_format, dst_format))
return NULL;
src_data = _cogl_bitmap_map (src_bmp, COGL_BUFFER_ACCESS_READ, 0);
if (src_data == NULL)
return NULL;
src_bpp = _cogl_get_format_bpp (src_format);
dst_bpp = _cogl_get_format_bpp (dst_format);
/* Initialize destination bitmap */
dst_rowstride = sizeof(guint8) * dst_bpp * width;
/* Copy the premult bit if the new format has an alpha channel */
if ((dst_format & COGL_A_BIT))
dst_format = ((src_format & COGL_PREMULT_BIT) |
(dst_format & COGL_UNPREMULT_MASK));
/* Allocate a new buffer to hold converted data */
dst_data = g_malloc (height * dst_rowstride);
/* FIXME: Optimize */
for (y = 0; y < height; y++)
{
src = src_data + y * src_rowstride;
dst = dst_data + y * dst_rowstride;
for (x = 0; x < width; x++)
{
/* FIXME: Would be nice to at least remove this inner
* branching, but not sure it can be done without
* rewriting of the whole loop */
switch (src_format & COGL_UNPREMULT_MASK)
{
case COGL_PIXEL_FORMAT_G_8:
_cogl_g_to_rgba (src, temp_rgba); break;
case COGL_PIXEL_FORMAT_RGB_888:
_cogl_rgb_to_rgba (src, temp_rgba); break;
case COGL_PIXEL_FORMAT_BGR_888:
_cogl_bgr_to_rgba (src, temp_rgba); break;
case COGL_PIXEL_FORMAT_RGBA_8888:
_cogl_rgba_to_rgba (src, temp_rgba); break;
case COGL_PIXEL_FORMAT_BGRA_8888:
_cogl_bgra_to_rgba (src, temp_rgba); break;
case COGL_PIXEL_FORMAT_ARGB_8888:
_cogl_argb_to_rgba (src, temp_rgba); break;
case COGL_PIXEL_FORMAT_ABGR_8888:
_cogl_abgr_to_rgba (src, temp_rgba); break;
default:
break;
}
switch (dst_format & COGL_UNPREMULT_MASK)
{
case COGL_PIXEL_FORMAT_G_8:
_cogl_rgba_to_g (temp_rgba, dst); break;
case COGL_PIXEL_FORMAT_RGB_888:
_cogl_rgba_to_rgb (temp_rgba, dst); break;
case COGL_PIXEL_FORMAT_BGR_888:
_cogl_rgba_to_bgr (temp_rgba, dst); break;
case COGL_PIXEL_FORMAT_RGBA_8888:
_cogl_rgba_to_rgba (temp_rgba, dst); break;
case COGL_PIXEL_FORMAT_BGRA_8888:
_cogl_rgba_to_bgra (temp_rgba, dst); break;
case COGL_PIXEL_FORMAT_ARGB_8888:
_cogl_rgba_to_argb (temp_rgba, dst); break;
case COGL_PIXEL_FORMAT_ABGR_8888:
_cogl_rgba_to_abgr (temp_rgba, dst); break;
default:
break;
}
src += src_bpp;
dst += dst_bpp;
}
}
_cogl_bitmap_unmap (src_bmp);
return _cogl_bitmap_new_from_data (dst_data,
dst_format,
width, height, dst_rowstride,
(CoglBitmapDestroyNotify) g_free,
NULL);
}
gboolean
_cogl_bitmap_fallback_unpremult (CoglBitmap *bmp)
{
guint8 *p, *data;
int x,y;
CoglPixelFormat format;
int width, height;
int rowstride;
format = _cogl_bitmap_get_format (bmp);
width = _cogl_bitmap_get_width (bmp);
height = _cogl_bitmap_get_height (bmp);
rowstride = _cogl_bitmap_get_rowstride (bmp);
/* Make sure format supported for un-premultiplication */
if (!_cogl_bitmap_fallback_can_unpremult (format))
return FALSE;
if ((data = _cogl_bitmap_map (bmp,
COGL_BUFFER_ACCESS_READ |
COGL_BUFFER_ACCESS_WRITE,
0)) == NULL)
return FALSE;
for (y = 0; y < height; y++)
{
p = (guint8*) data + y * rowstride;
if (format & COGL_AFIRST_BIT)
{
for (x = 0; x < width; x++)
{
if (p[0] == 0)
_cogl_unpremult_alpha_0 (p);
else
_cogl_unpremult_alpha_first (p);
p += 4;
}
}
else
{
for (x = 0; x < width; x++)
{
if (p[3] == 0)
_cogl_unpremult_alpha_0 (p);
else
_cogl_unpremult_alpha_last (p);
p += 4;
}
}
}
_cogl_bitmap_unmap (bmp);
_cogl_bitmap_set_format (bmp, format & ~COGL_PREMULT_BIT);
return TRUE;
}
gboolean
_cogl_bitmap_fallback_premult (CoglBitmap *bmp)
{
guint8 *p, *data;
int x,y;
CoglPixelFormat format;
int width, height;
int rowstride;
format = _cogl_bitmap_get_format (bmp);
width = _cogl_bitmap_get_width (bmp);
height = _cogl_bitmap_get_height (bmp);
rowstride = _cogl_bitmap_get_rowstride (bmp);
/* Make sure format supported for un-premultiplication */
if (!_cogl_bitmap_fallback_can_premult (format))
return FALSE;
if ((data = _cogl_bitmap_map (bmp,
COGL_BUFFER_ACCESS_READ |
COGL_BUFFER_ACCESS_WRITE,
0)) == NULL)
return FALSE;
for (y = 0; y < height; y++)
{
p = (guint8*) data + y * rowstride;
if (format & COGL_AFIRST_BIT)
{
for (x = 0; x < width; x++)
{
_cogl_premult_alpha_first (p);
p += 4;
}
}
else
{
x = width;
#ifdef COGL_USE_PREMULT_SSE2
/* Process 4 pixels at a time */
while (x >= 4)
{
_cogl_premult_alpha_last_four_pixels_sse2 (p);
p += 4 * 4;
x -= 4;
}
/* If there are any pixels left we will fall through and
handle them below */
#endif /* COGL_USE_PREMULT_SSE2 */
while (x-- > 0)
{
_cogl_premult_alpha_last (p);
p += 4;
}
}
}
_cogl_bitmap_unmap (bmp);
_cogl_bitmap_set_format (bmp, format | COGL_PREMULT_BIT);
return TRUE;
}
CoglBitmap *
_cogl_bitmap_fallback_from_file (const char *filename)
{
/* FIXME: use jpeglib, libpng, etc. manually maybe */
return FALSE;
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-bitmap-private.h"
#include <string.h>
#ifdef USE_QUARTZ
#include <ApplicationServices/ApplicationServices.h>
#elif defined(USE_GDKPIXBUF)
#include <gdk-pixbuf/gdk-pixbuf.h>
#endif
gboolean
_cogl_bitmap_can_convert (CoglPixelFormat src, CoglPixelFormat dst)
{
return FALSE;
}
gboolean
_cogl_bitmap_can_unpremult (CoglPixelFormat format)
{
return FALSE;
}
gboolean
_cogl_bitmap_can_premult (CoglPixelFormat format)
{
return FALSE;
}
CoglBitmap *
_cogl_bitmap_convert (CoglBitmap *bmp,
CoglPixelFormat dst_format)
{
return NULL;
}
gboolean
_cogl_bitmap_unpremult (CoglBitmap *dst_bmp)
{
return FALSE;
}
gboolean
_cogl_bitmap_premult (CoglBitmap *dst_bmp)
{
return FALSE;
}
#ifdef USE_QUARTZ
gboolean
_cogl_bitmap_get_size_from_file (const char *filename,
int *width,
int *height)
{
if (width)
*width = 0;
if (height)
*height = 0;
return TRUE;
}
/* the error does not contain the filename as the caller already has it */
CoglBitmap *
_cogl_bitmap_from_file (const char *filename,
GError **error)
{
CFURLRef url;
CGImageSourceRef image_source;
CGImageRef image;
int save_errno;
CFStringRef type;
gsize width, height, rowstride;
guint8 *out_data;
CGColorSpaceRef color_space;
CGContextRef bitmap_context;
g_assert (filename != NULL);
g_assert (error == NULL || *error == NULL);
url = CFURLCreateFromFileSystemRepresentation (NULL,
(guchar *) filename,
strlen (filename),
false);
image_source = CGImageSourceCreateWithURL (url, NULL);
save_errno = errno;
CFRelease (url);
if (image_source == NULL)
{
/* doesn't exist, not readable, etc. */
g_set_error_literal (error,
COGL_BITMAP_ERROR,
COGL_BITMAP_ERROR_FAILED,
g_strerror (save_errno));
return NULL;
}
/* Unknown images would be cleanly caught as zero width/height below, but try
* to provide better error message
*/
type = CGImageSourceGetType (image_source);
if (type == NULL)
{
CFRelease (image_source);
g_set_error_literal (error,
COGL_BITMAP_ERROR,
COGL_BITMAP_ERROR_UNKNOWN_TYPE,
"Unknown image type");
return NULL;
}
CFRelease (type);
image = CGImageSourceCreateImageAtIndex (image_source, 0, NULL);
CFRelease (image_source);
width = CGImageGetWidth (image);
height = CGImageGetHeight (image);
if (width == 0 || height == 0)
{
/* incomplete or corrupt */
CFRelease (image);
g_set_error_literal (error,
COGL_BITMAP_ERROR,
COGL_BITMAP_ERROR_CORRUPT_IMAGE,
"Image has zero width or height");
return NULL;
}
/* allocate buffer big enough to hold pixel data */
rowstride = 4 * width;
out_data = g_malloc0 (height * rowstride);
/* render to buffer */
color_space = CGColorSpaceCreateWithName (kCGColorSpaceGenericRGB);
bitmap_context = CGBitmapContextCreate (out_data,
width, height, 8,
rowstride, color_space,
kCGImageAlphaPremultipliedFirst);
CGColorSpaceRelease (color_space);
{
const CGRect rect = {{0, 0}, {width, height}};
CGContextDrawImage (bitmap_context, rect, image);
}
CGImageRelease (image);
CGContextRelease (bitmap_context);
/* store bitmap info */
return _cogl_bitmap_new_from_data (out_data,
COGL_PIXEL_FORMAT_ARGB_8888,
width, height,
rowstride,
(CoglBitmapDestroyNotify) g_free,
NULL);
}
#elif defined(USE_GDKPIXBUF)
gboolean
_cogl_bitmap_get_size_from_file (const char *filename,
int *width,
int *height)
{
g_return_val_if_fail (filename != NULL, FALSE);
if (gdk_pixbuf_get_file_info (filename, width, height) != NULL)
return TRUE;
return FALSE;
}
static void
_cogl_bitmap_unref_pixbuf (guint8 *pixels,
void *pixbuf)
{
g_object_unref (pixbuf);
}
CoglBitmap *
_cogl_bitmap_from_file (const char *filename,
GError **error)
{
GdkPixbuf *pixbuf;
gboolean has_alpha;
GdkColorspace color_space;
CoglPixelFormat pixel_format;
int width;
int height;
int rowstride;
int bits_per_sample;
int n_channels;
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
/* Load from file using GdkPixbuf */
pixbuf = gdk_pixbuf_new_from_file (filename, error);
if (pixbuf == NULL)
return FALSE;
/* Get pixbuf properties */
has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
color_space = gdk_pixbuf_get_colorspace (pixbuf);
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
bits_per_sample = gdk_pixbuf_get_bits_per_sample (pixbuf);
n_channels = gdk_pixbuf_get_n_channels (pixbuf);
/* According to current docs this should be true and so
* the translation to cogl pixel format below valid */
g_assert (bits_per_sample == 8);
if (has_alpha)
g_assert (n_channels == 4);
else
g_assert (n_channels == 3);
/* Translate to cogl pixel format */
switch (color_space)
{
case GDK_COLORSPACE_RGB:
/* The only format supported by GdkPixbuf so far */
pixel_format = has_alpha ?
COGL_PIXEL_FORMAT_RGBA_8888 :
COGL_PIXEL_FORMAT_RGB_888;
break;
default:
/* Ouch, spec changed! */
g_object_unref (pixbuf);
return FALSE;
}
/* We just use the data directly from the pixbuf so that we don't
have to copy to a seperate buffer. Note that Cogl is expected not
to read past the end of bpp*width on the last row even if the
rowstride is much larger so we don't need to worry about
GdkPixbuf's semantics that it may under-allocate the buffer. */
return _cogl_bitmap_new_from_data (gdk_pixbuf_get_pixels (pixbuf),
pixel_format,
width,
height,
rowstride,
_cogl_bitmap_unref_pixbuf,
pixbuf);
}
#else
#include "stb_image.c"
gboolean
_cogl_bitmap_get_size_from_file (const char *filename,
int *width,
int *height)
{
if (width)
*width = 0;
if (height)
*height = 0;
return TRUE;
}
CoglBitmap *
_cogl_bitmap_from_file (const char *filename,
GError **error)
{
CoglBitmap *bmp;
int stb_pixel_format;
int width;
int height;
guint8 *pixels;
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
/* Load from file using stb */
pixels = stbi_load (filename,
&width, &height, &stb_pixel_format,
STBI_rgb_alpha);
if (pixels == NULL)
return FALSE;
/* Store bitmap info */
bmp = _cogl_bitmap_new_from_data (g_memdup (pixels, height * width * 4),
COGL_PIXEL_FORMAT_RGBA_8888,
width, height,
width * 4,
(CoglBitmapDestroyNotify) g_free,
NULL);
free (pixels);
return bmp;
}
#endif

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@ -1,214 +0,0 @@
/*
* Clutter COGL
*
* A basic GL/GLES Abstraction/Utility Layer
*
* Authored By Matthew Allum <mallum@openedhand.com>
*
* Copyright (C) 2007 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_BITMAP_H
#define __COGL_BITMAP_H
#include <glib.h>
#include "cogl-handle.h"
#include "cogl-buffer.h"
#include "cogl-bitmap.h"
/*
* CoglBitmapDestroyNotify:
* @data: The image data
* @destroy_data: The callback closure data that was given to
* _cogl_bitmap_new_from_data().
*
* Function prototype that is used to destroy the bitmap data when
* _cogl_bitmap_new_from_data() is called.
*/
typedef void (* CoglBitmapDestroyNotify) (guint8 *data, void *destroy_data);
/*
* _cogl_bitmap_new_from_data:
* @data: A pointer to the data. The bitmap will take ownership of this data.
* @format: The format of the pixel data.
* @width: The width of the bitmap.
* @height: The height of the bitmap.
* @rowstride: The rowstride of the bitmap (the number of bytes from
* the start of one row of the bitmap to the next).
* @destroy_fn: A function to be called when the bitmap is
* destroyed. This should free @data. %NULL can be used instead if
* no free is needed.
* @destroy_fn_data: This pointer will get passed to @destroy_fn.
*
* Creates a bitmap using some existing data. The data is not copied
* so the bitmap will take ownership of the data pointer. When the
* bitmap is freed @destroy_fn will be called to free the data.
*
* Return value: A new %CoglBitmap.
*/
CoglBitmap *
_cogl_bitmap_new_from_data (guint8 *data,
CoglPixelFormat format,
int width,
int height,
int rowstride,
CoglBitmapDestroyNotify destroy_fn,
gpointer destroy_fn_data);
/* The idea of this function is that it will create a bitmap that
shares the actual data with another bitmap. This is needed for the
atlas texture backend because it needs upload a bitmap to a sub
texture but override the format so that it ignores the premult
flag. */
CoglBitmap *
_cogl_bitmap_new_shared (CoglBitmap *shared_bmp,
CoglPixelFormat format,
int width,
int height,
int rowstride);
/* This creates a cogl bitmap that internally references a pixel
array. The data is not copied. _cogl_bitmap_map will divert to
mapping the pixel array */
CoglBitmap *
_cogl_bitmap_new_from_buffer (CoglBuffer *buffer,
CoglPixelFormat format,
int width,
int height,
int rowstride,
int offset);
gboolean
_cogl_bitmap_can_convert (CoglPixelFormat src, CoglPixelFormat dst);
gboolean
_cogl_bitmap_fallback_can_convert (CoglPixelFormat src, CoglPixelFormat dst);
gboolean
_cogl_bitmap_can_unpremult (CoglPixelFormat format);
gboolean
_cogl_bitmap_fallback_can_unpremult (CoglPixelFormat format);
gboolean
_cogl_bitmap_can_premult (CoglPixelFormat format);
gboolean
_cogl_bitmap_fallback_can_premult (CoglPixelFormat format);
CoglBitmap *
_cogl_bitmap_convert (CoglBitmap *bmp,
CoglPixelFormat dst_format);
CoglBitmap *
_cogl_bitmap_fallback_convert (CoglBitmap *bmp,
CoglPixelFormat dst_format);
gboolean
_cogl_bitmap_unpremult (CoglBitmap *dst_bmp);
gboolean
_cogl_bitmap_fallback_unpremult (CoglBitmap *dst_bmp);
gboolean
_cogl_bitmap_premult (CoglBitmap *dst_bmp);
gboolean
_cogl_bitmap_fallback_premult (CoglBitmap *dst_bmp);
CoglBitmap *
_cogl_bitmap_from_file (const char *filename,
GError **error);
CoglBitmap *
_cogl_bitmap_fallback_from_file (const char *filename);
gboolean
_cogl_bitmap_convert_premult_status (CoglBitmap *bmp,
CoglPixelFormat dst_format);
CoglBitmap *
_cogl_bitmap_convert_format_and_premult (CoglBitmap *bmp,
CoglPixelFormat dst_format);
void
_cogl_bitmap_copy_subregion (CoglBitmap *src,
CoglBitmap *dst,
int src_x,
int src_y,
int dst_x,
int dst_y,
int width,
int height);
/* Creates a deep copy of the source bitmap */
CoglBitmap *
_cogl_bitmap_copy (CoglBitmap *src_bmp);
gboolean
_cogl_bitmap_get_size_from_file (const char *filename,
int *width,
int *height);
CoglPixelFormat
_cogl_bitmap_get_format (CoglBitmap *bitmap);
void
_cogl_bitmap_set_format (CoglBitmap *bitmap,
CoglPixelFormat format);
int
_cogl_bitmap_get_width (CoglBitmap *bitmap);
int
_cogl_bitmap_get_height (CoglBitmap *bitmap);
int
_cogl_bitmap_get_rowstride (CoglBitmap *bitmap);
/* Maps the bitmap so that the pixels can be accessed directly or if
the bitmap is just a memory bitmap then it just returns the pointer
to memory. Note that the bitmap isn't guaranteed to allocated to
the full size of rowstride*height so it is not safe to read up to
the rowstride of the last row. This will be the case if the user
uploads data using gdk_pixbuf_new_subpixbuf with a sub region
containing the last row of the pixbuf because in that case the
rowstride can be much larger than the width of the image */
guint8 *
_cogl_bitmap_map (CoglBitmap *bitmap,
CoglBufferAccess access,
CoglBufferMapHint hints);
void
_cogl_bitmap_unmap (CoglBitmap *bitmap);
/* These two are replacements for map and unmap that should used when
the pointer is going to be passed to GL for pixel packing or
unpacking. The address might not be valid for reading if the bitmap
was created with new_from_buffer but it will however be good to
pass to glTexImage2D for example. The access should be READ for
unpacking and WRITE for packing. It can not be both */
guint8 *
_cogl_bitmap_bind (CoglBitmap *bitmap,
CoglBufferAccess access,
CoglBufferMapHint hints);
void
_cogl_bitmap_unbind (CoglBitmap *bitmap);
#endif /* __COGL_BITMAP_H */

498
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@ -1,498 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-debug.h"
#include "cogl-internal.h"
#include "cogl-bitmap-private.h"
#include "cogl-buffer-private.h"
#include <string.h>
struct _CoglBitmap
{
CoglHandleObject _parent;
CoglPixelFormat format;
int width;
int height;
int rowstride;
guint8 *data;
CoglBitmapDestroyNotify destroy_fn;
void *destroy_fn_data;
gboolean mapped;
gboolean bound;
/* If this is non-null then 'data' is ignored and instead it is
fetched from this shared bitmap. */
CoglBitmap *shared_bmp;
/* If this is non-null then 'data' is treated as an offset into the
buffer and map will divert to mapping the buffer */
CoglBuffer *buffer;
};
static void _cogl_bitmap_free (CoglBitmap *bmp);
COGL_OBJECT_DEFINE (Bitmap, bitmap);
static void
_cogl_bitmap_free (CoglBitmap *bmp)
{
g_assert (!bmp->mapped);
g_assert (!bmp->bound);
if (bmp->destroy_fn)
bmp->destroy_fn (bmp->data, bmp->destroy_fn_data);
if (bmp->shared_bmp)
cogl_object_unref (bmp->shared_bmp);
if (bmp->buffer)
cogl_object_unref (bmp->buffer);
g_slice_free (CoglBitmap, bmp);
}
int
_cogl_get_format_bpp (CoglPixelFormat format)
{
int bpp_lut[] = {
0, /* invalid */
1, /* A_8 */
3, /* 888 */
4, /* 8888 */
2, /* 565 */
2, /* 4444 */
2, /* 5551 */
2, /* YUV */
1 /* G_8 */
};
return bpp_lut [format & COGL_UNORDERED_MASK];
}
gboolean
_cogl_bitmap_convert_premult_status (CoglBitmap *bmp,
CoglPixelFormat dst_format)
{
/* Do we need to unpremultiply? */
if ((bmp->format & COGL_PREMULT_BIT) > 0 &&
(dst_format & COGL_PREMULT_BIT) == 0)
/* Try unpremultiplying using imaging library */
return (_cogl_bitmap_unpremult (bmp)
/* ... or try fallback */
|| _cogl_bitmap_fallback_unpremult (bmp));
/* Do we need to premultiply? */
if ((bmp->format & COGL_PREMULT_BIT) == 0 &&
(dst_format & COGL_PREMULT_BIT) > 0)
/* Try premultiplying using imaging library */
return (_cogl_bitmap_premult (bmp)
/* ... or try fallback */
|| _cogl_bitmap_fallback_premult (bmp));
return TRUE;
}
CoglBitmap *
_cogl_bitmap_convert_format_and_premult (CoglBitmap *bmp,
CoglPixelFormat dst_format)
{
CoglPixelFormat src_format = _cogl_bitmap_get_format (bmp);
CoglBitmap *dst_bmp;
/* Is base format different (not considering premult status)? */
if ((src_format & COGL_UNPREMULT_MASK) !=
(dst_format & COGL_UNPREMULT_MASK))
{
/* Try converting using imaging library */
if ((dst_bmp = _cogl_bitmap_convert (bmp, dst_format)) == NULL)
{
/* ... or try fallback */
if ((dst_bmp = _cogl_bitmap_fallback_convert (bmp,
dst_format)) == NULL)
return NULL;
}
}
else
{
int rowstride = _cogl_bitmap_get_rowstride (bmp);
int height = _cogl_bitmap_get_height (bmp);
guint8 *data;
/* Copy the bitmap so that we can premultiply in-place */
if ((data = _cogl_bitmap_map (bmp, COGL_BUFFER_ACCESS_READ, 0)) == NULL)
return NULL;
dst_bmp = _cogl_bitmap_new_from_data (g_memdup (data, height * rowstride),
src_format,
_cogl_bitmap_get_width (bmp),
height,
rowstride,
(CoglBitmapDestroyNotify) g_free,
NULL);
_cogl_bitmap_unmap (bmp);
}
src_format = _cogl_bitmap_get_format (dst_bmp);
/* We only need to do a premult conversion if both formats have an
alpha channel. If we're converting from RGB to RGBA then the
alpha will have been filled with 255 so the premult won't do
anything or if we are converting from RGBA to RGB we're losing
information so either converting or not will be wrong for
transparent pixels */
if ((src_format & COGL_A_BIT) == COGL_A_BIT &&
(dst_format & COGL_A_BIT) == COGL_A_BIT &&
!_cogl_bitmap_convert_premult_status (dst_bmp, dst_format))
{
cogl_object_unref (dst_bmp);
return NULL;
}
return dst_bmp;
}
CoglBitmap *
_cogl_bitmap_copy (CoglBitmap *src_bmp)
{
CoglBitmap *dst_bmp;
CoglPixelFormat src_format = _cogl_bitmap_get_format (src_bmp);
int bpp = _cogl_get_format_bpp (src_format);
int width = _cogl_bitmap_get_width (src_bmp);
int height = _cogl_bitmap_get_height (src_bmp);
int dst_rowstride = width * bpp;
/* Round the rowstride up to the next nearest multiple of 4 bytes */
dst_rowstride = (dst_rowstride + 3) & ~3;
dst_bmp = _cogl_bitmap_new_from_data (g_malloc (dst_rowstride * height),
src_format,
width, height,
dst_rowstride,
(CoglBitmapDestroyNotify) g_free,
NULL);
_cogl_bitmap_copy_subregion (src_bmp,
dst_bmp,
0, 0, /* src_x/y */
0, 0, /* dst_x/y */
width, height);
return dst_bmp;
}
void
_cogl_bitmap_copy_subregion (CoglBitmap *src,
CoglBitmap *dst,
int src_x,
int src_y,
int dst_x,
int dst_y,
int width,
int height)
{
guint8 *srcdata;
guint8 *dstdata;
int bpp;
int line;
/* Intended only for fast copies when format is equal! */
g_assert (src->format == dst->format);
bpp = _cogl_get_format_bpp (src->format);
if ((srcdata = _cogl_bitmap_map (src, COGL_BUFFER_ACCESS_READ, 0)))
{
if ((dstdata = _cogl_bitmap_map (dst, COGL_BUFFER_ACCESS_WRITE, 0)))
{
srcdata += src_y * src->rowstride + src_x * bpp;
dstdata += dst_y * dst->rowstride + dst_x * bpp;
for (line=0; line<height; ++line)
{
memcpy (dstdata, srcdata, width * bpp);
srcdata += src->rowstride;
dstdata += dst->rowstride;
}
_cogl_bitmap_unmap (dst);
}
_cogl_bitmap_unmap (src);
}
}
gboolean
cogl_bitmap_get_size_from_file (const char *filename,
int *width,
int *height)
{
return _cogl_bitmap_get_size_from_file (filename, width, height);
}
CoglBitmap *
_cogl_bitmap_new_from_data (guint8 *data,
CoglPixelFormat format,
int width,
int height,
int rowstride,
CoglBitmapDestroyNotify destroy_fn,
void *destroy_fn_data)
{
CoglBitmap *bmp = g_slice_new (CoglBitmap);
bmp->format = format;
bmp->width = width;
bmp->height = height;
bmp->rowstride = rowstride;
bmp->data = data;
bmp->destroy_fn = destroy_fn;
bmp->destroy_fn_data = destroy_fn_data;
bmp->mapped = FALSE;
bmp->bound = FALSE;
bmp->shared_bmp = NULL;
bmp->buffer = NULL;
return _cogl_bitmap_object_new (bmp);
}
CoglBitmap *
_cogl_bitmap_new_shared (CoglBitmap *shared_bmp,
CoglPixelFormat format,
int width,
int height,
int rowstride)
{
CoglBitmap *bmp = _cogl_bitmap_new_from_data (NULL, /* data */
format,
width,
height,
rowstride,
NULL, /* destroy_fn */
NULL /* destroy_fn_data */);
bmp->shared_bmp = cogl_object_ref (shared_bmp);
return bmp;
}
CoglBitmap *
cogl_bitmap_new_from_file (const char *filename,
GError **error)
{
CoglBitmap *bmp;
g_return_val_if_fail (error == NULL || *error == NULL, COGL_INVALID_HANDLE);
if ((bmp = _cogl_bitmap_from_file (filename, error)) == NULL)
{
/* Try fallback */
if ((bmp = _cogl_bitmap_fallback_from_file (filename))
&& error && *error)
{
g_error_free (*error);
*error = NULL;
}
}
return bmp;
}
CoglBitmap *
_cogl_bitmap_new_from_buffer (CoglBuffer *buffer,
CoglPixelFormat format,
int width,
int height,
int rowstride,
int offset)
{
CoglBitmap *bmp;
g_return_val_if_fail (cogl_is_buffer (buffer), NULL);
bmp = _cogl_bitmap_new_from_data (NULL, /* data */
format,
width,
height,
rowstride,
NULL, /* destroy_fn */
NULL /* destroy_fn_data */);
bmp->buffer = cogl_object_ref (buffer);
bmp->data = GINT_TO_POINTER (offset);
return bmp;
}
CoglPixelFormat
_cogl_bitmap_get_format (CoglBitmap *bitmap)
{
return bitmap->format;
}
void
_cogl_bitmap_set_format (CoglBitmap *bitmap,
CoglPixelFormat format)
{
bitmap->format = format;
}
int
_cogl_bitmap_get_width (CoglBitmap *bitmap)
{
return bitmap->width;
}
GQuark
cogl_bitmap_error_quark (void)
{
return g_quark_from_static_string ("cogl-bitmap-error-quark");
}
int
_cogl_bitmap_get_height (CoglBitmap *bitmap)
{
return bitmap->height;
}
int
_cogl_bitmap_get_rowstride (CoglBitmap *bitmap)
{
return bitmap->rowstride;
}
guint8 *
_cogl_bitmap_map (CoglBitmap *bitmap,
CoglBufferAccess access,
CoglBufferMapHint hints)
{
/* Divert to another bitmap if this data is shared */
if (bitmap->shared_bmp)
return _cogl_bitmap_map (bitmap->shared_bmp, access, hints);
g_assert (!bitmap->mapped);
if (bitmap->buffer)
{
guint8 *data = cogl_buffer_map (bitmap->buffer,
access,
hints);
COGL_NOTE (BITMAP, "A pixel array is being mapped from a bitmap. This "
"usually means that some conversion on the pixel array is "
"needed so a sub-optimal format is being used.");
if (data)
{
bitmap->mapped = TRUE;
return data + GPOINTER_TO_INT (bitmap->data);
}
else
return NULL;
}
else
{
bitmap->mapped = TRUE;
return bitmap->data;
}
}
void
_cogl_bitmap_unmap (CoglBitmap *bitmap)
{
/* Divert to another bitmap if this data is shared */
if (bitmap->shared_bmp)
return _cogl_bitmap_unmap (bitmap->shared_bmp);
g_assert (bitmap->mapped);
bitmap->mapped = FALSE;
if (bitmap->buffer)
cogl_buffer_unmap (bitmap->buffer);
}
guint8 *
_cogl_bitmap_bind (CoglBitmap *bitmap,
CoglBufferAccess access,
CoglBufferMapHint hints)
{
guint8 *ptr;
/* Divert to another bitmap if this data is shared */
if (bitmap->shared_bmp)
return _cogl_bitmap_bind (bitmap->shared_bmp, access, hints);
g_assert (!bitmap->bound);
/* If the bitmap wasn't created from a buffer then the
implementation of bind is the same as map */
if (bitmap->buffer == NULL)
{
guint8 *data = _cogl_bitmap_map (bitmap, access, hints);
if (data)
bitmap->bound = TRUE;
return data;
}
bitmap->bound = TRUE;
if (access == COGL_BUFFER_ACCESS_READ)
ptr = _cogl_buffer_bind (bitmap->buffer,
COGL_BUFFER_BIND_TARGET_PIXEL_UNPACK);
else if (access == COGL_BUFFER_ACCESS_WRITE)
ptr = _cogl_buffer_bind (bitmap->buffer,
COGL_BUFFER_BIND_TARGET_PIXEL_PACK);
else
g_assert_not_reached ();
/* The data pointer actually stores the offset */
return GPOINTER_TO_INT (bitmap->data) + ptr;
}
void
_cogl_bitmap_unbind (CoglBitmap *bitmap)
{
/* Divert to another bitmap if this data is shared */
if (bitmap->shared_bmp)
return _cogl_bitmap_unbind (bitmap->shared_bmp);
g_assert (bitmap->bound);
bitmap->bound = FALSE;
/* If the bitmap wasn't created from a pixel array then the
implementation of unbind is the same as unmap */
if (bitmap->buffer)
_cogl_buffer_unbind (bitmap->buffer);
else
_cogl_bitmap_unmap (bitmap);
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_BITMAP_H__
#define __COGL_BITMAP_H__
#include <cogl/cogl-types.h>
G_BEGIN_DECLS
typedef struct _CoglBitmap CoglBitmap;
/**
* SECTION:cogl-bitmap
* @short_description: Fuctions for loading images
*
* Cogl allows loading image data into memory as CoglBitmaps without
* loading them immediately into GPU textures.
*
* #CoglBitmap is available since Cogl 1.0
*/
/**
* cogl_bitmap_new_from_file:
* @filename: the file to load.
* @error: a #GError or %NULL.
*
* Loads an image file from disk. This function can be safely called from
* within a thread.
*
* Return value: a #CoglBitmap to the new loaded image data, or
* %NULL if loading the image failed.
*
* Since: 1.0
*/
CoglBitmap *
cogl_bitmap_new_from_file (const char *filename,
GError **error);
/**
* cogl_bitmap_get_size_from_file:
* @filename: the file to check
* @width: (out): return location for the bitmap width, or %NULL
* @height: (out): return location for the bitmap height, or %NULL
*
* Parses an image file enough to extract the width and height
* of the bitmap.
*
* Return value: %TRUE if the image was successfully parsed
*
* Since: 1.0
*/
gboolean
cogl_bitmap_get_size_from_file (const char *filename,
int *width,
int *height);
/**
* cogl_is_bitmap:
* @handle: a #CoglHandle for a bitmap
*
* Checks whether @handle is a #CoglHandle for a bitmap
*
* Return value: %TRUE if the passed handle represents a bitmap,
* and %FALSE otherwise
*
* Since: 1.0
*/
gboolean
cogl_is_bitmap (CoglHandle handle);
/**
* COGL_BITMAP_ERROR:
*
* #GError domain for bitmap errors.
*
* Since: 1.4
*/
#define COGL_BITMAP_ERROR (cogl_bitmap_error_quark ())
/**
* CoglBitmapError:
* @COGL_BITMAP_ERROR_FAILED: Generic failure code, something went
* wrong.
* @COGL_BITMAP_ERROR_UNKNOWN_TYPE: Unknown image type.
* @COGL_BITMAP_ERROR_CORRUPT_IMAGE: An image file was broken somehow.
*
* Error codes that can be thrown when performing bitmap
* operations. Note that gdk_pixbuf_new_from_file() can also throw
* errors directly from the underlying image loading library. For
* example, if GdkPixbuf is used then errors #GdkPixbufError<!-- -->s
* will be used directly.
*
* Since: 1.4
*/
typedef enum {
COGL_BITMAP_ERROR_FAILED,
COGL_BITMAP_ERROR_UNKNOWN_TYPE,
COGL_BITMAP_ERROR_CORRUPT_IMAGE
} CoglBitmapError;
GQuark cogl_bitmap_error_quark (void);
G_END_DECLS
#endif /* __COGL_BITMAP_H__ */

257
clutter/cogl/cogl/cogl-bitmask.c
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <string.h>
#include "cogl-bitmask.h"
gboolean
_cogl_bitmask_get_from_array (const CoglBitmask *bitmask,
unsigned int bit_num)
{
GArray *array = (GArray *) *bitmask;
/* If the index is off the end of the array then assume the bit is
not set */
if (bit_num >= sizeof (unsigned int) * 8 * array->len)
return FALSE;
else
return !!(g_array_index (array, unsigned int,
bit_num / (sizeof (unsigned int) * 8)) &
(1 << (bit_num % (sizeof (unsigned int) * 8))));
}
static void
_cogl_bitmask_convert_to_array (CoglBitmask *bitmask)
{
GArray *array;
/* Fetch the old values, ignoring the least significant bit */
unsigned int old_values = GPOINTER_TO_UINT (*bitmask) >> 1;
array = g_array_new (FALSE, TRUE, sizeof (unsigned int));
/* Copy the old values back in */
g_array_append_val (array, old_values);
*bitmask = (struct _CoglBitmaskImaginaryType *) array;
}
void
_cogl_bitmask_set_in_array (CoglBitmask *bitmask,
unsigned int bit_num,
gboolean value)
{
GArray *array;
unsigned int array_index, new_value_mask;
/* If the bitmask is not already an array then we need to allocate one */
if (!_cogl_bitmask_has_array (bitmask))
_cogl_bitmask_convert_to_array (bitmask);
array = (GArray *) *bitmask;
array_index = bit_num / (sizeof (unsigned int) * 8);
/* Grow the array if necessary. This will clear the new data */
if (array_index >= array->len)
g_array_set_size (array, array_index + 1);
new_value_mask = 1 << (bit_num % (sizeof (unsigned int) * 8));
if (value)
g_array_index (array, unsigned int, array_index) |= new_value_mask;
else
g_array_index (array, unsigned int, array_index) &= ~new_value_mask;
}
void
_cogl_bitmask_set_bits (CoglBitmask *dst,
const CoglBitmask *src)
{
if (_cogl_bitmask_has_array (src))
{
GArray *src_array, *dst_array;
int i;
if (!_cogl_bitmask_has_array (dst))
_cogl_bitmask_convert_to_array (dst);
dst_array = (GArray *) *dst;
src_array = (GArray *) *src;
if (dst_array->len < src_array->len)
g_array_set_size (dst_array, src_array->len);
for (i = 0; i < src_array->len; i++)
g_array_index (dst_array, unsigned int, i) |=
g_array_index (src_array, unsigned int, i);
}
else if (_cogl_bitmask_has_array (dst))
{
GArray *dst_array;
dst_array = (GArray *) *dst;
g_array_index (dst_array, unsigned int, 0) |=
(GPOINTER_TO_UINT (*src) >> 1);
}
else
*dst = GUINT_TO_POINTER (GPOINTER_TO_UINT (*dst) |
GPOINTER_TO_UINT (*src));
}
void
_cogl_bitmask_set_range_in_array (CoglBitmask *bitmask,
unsigned int n_bits,
gboolean value)
{
GArray *array;
unsigned int array_index, bit_index;
if (n_bits == 0)
return;
/* If the bitmask is not already an array then we need to allocate one */
if (!_cogl_bitmask_has_array (bitmask))
_cogl_bitmask_convert_to_array (bitmask);
array = (GArray *) *bitmask;
/* Get the array index of the top most value that will be touched */
array_index = (n_bits - 1) / (sizeof (unsigned int) * 8);
/* Get the bit index of the top most value */
bit_index = (n_bits - 1) % (sizeof (unsigned int) * 8);
/* Grow the array if necessary. This will clear the new data */
if (array_index >= array->len)
g_array_set_size (array, array_index + 1);
if (value)
{
/* Set the bits that are touching this index */
g_array_index (array, unsigned int, array_index) |=
~(unsigned int) 0 >> (sizeof (unsigned int) * 8 - 1 - bit_index);
/* Set all of the bits in any lesser indices */
memset (array->data, 0xff, sizeof (unsigned int) * array_index);
}
else
{
/* Clear the bits that are touching this index */
g_array_index (array, unsigned int, array_index) &=
~(unsigned int) 1 << bit_index;
/* Clear all of the bits in any lesser indices */
memset (array->data, 0x00, sizeof (unsigned int) * array_index);
}
}
void
_cogl_bitmask_xor_bits (CoglBitmask *dst,
const CoglBitmask *src)
{
if (_cogl_bitmask_has_array (src))
{
GArray *src_array, *dst_array;
int i;
if (!_cogl_bitmask_has_array (dst))
_cogl_bitmask_convert_to_array (dst);
dst_array = (GArray *) *dst;
src_array = (GArray *) *src;
if (dst_array->len < src_array->len)
g_array_set_size (dst_array, src_array->len);
for (i = 0; i < src_array->len; i++)
g_array_index (dst_array, unsigned int, i) ^=
g_array_index (src_array, unsigned int, i);
}
else if (_cogl_bitmask_has_array (dst))
{
GArray *dst_array;
dst_array = (GArray *) *dst;
g_array_index (dst_array, unsigned int, 0) ^=
(GPOINTER_TO_UINT (*src) >> 1);
}
else
*dst = GUINT_TO_POINTER ((GPOINTER_TO_UINT (*dst) ^
GPOINTER_TO_UINT (*src)) | 1);
}
void
_cogl_bitmask_clear_all_in_array (CoglBitmask *bitmask)
{
GArray *array = (GArray *) *bitmask;
memset (array->data, 0, sizeof (unsigned int) * array->len);
}
void
_cogl_bitmask_foreach (const CoglBitmask *bitmask,
CoglBitmaskForeachFunc func,
gpointer user_data)
{
if (_cogl_bitmask_has_array (bitmask))
{
GArray *array = (GArray *) *bitmask;
int array_index;
for (array_index = 0; array_index < array->len; array_index++)
{
unsigned int mask = g_array_index (array, unsigned int, array_index);
int bit = 0;
while (mask)
{
if (mask & 1)
func (array_index * sizeof (unsigned int) * 8 + bit, user_data);
bit++;
mask >>= 1;
}
}
}
else
{
unsigned int mask = GPOINTER_TO_UINT (*bitmask) >> 1;
int bit = 0;
while (mask)
{
if (mask & 1)
func (bit, user_data);
bit++;
mask >>= 1;
}
}
}

227
clutter/cogl/cogl/cogl-bitmask.h
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifndef __COGL_BITMASK_H
#define __COGL_BITMASK_H
#include <glib.h>
G_BEGIN_DECLS
/*
* CoglBitmask implements a growable array of bits. A CoglBitmask can
* be allocated on the stack but it must be initialised with
* _cogl_bitmask_init() before use and then destroyed with
* _cogl_bitmask_destroy(). A CoglBitmask will try to avoid allocating
* any memory unless more than 31 bits are needed.
*
* Internally a CoglBitmask is a pointer. If the least significant bit
* of the pointer is 1 then the rest of the bits are directly used as
* part of the bitmask, otherwise it is a pointer to a GArray of
* unsigned ints. This relies on the fact the g_malloc will return a
* pointer aligned to at least two bytes (so that the least
* significant bit of the address is always 0)
*
* If the maximum possible bit number in the set is known at compile
* time, it may make more sense to use the macros in cogl-flags.h
* instead of this type.
*/
typedef struct _CoglBitmaskImaginaryType *CoglBitmask;
/* Internal helper macro to determine whether this bitmask has a
GArray allocated or whether the pointer is just used directly */
#define _cogl_bitmask_has_array(bitmask) \
(!(GPOINTER_TO_UINT (*bitmask) & 1))
/* Number of bits we can use before needing to allocate an array */
#define COGL_BITMASK_MAX_DIRECT_BITS (sizeof (unsigned int) * 8 - 1)
/*
* _cogl_bitmask_init:
* @bitmask: A pointer to a bitmask
*
* Initialises the cogl bitmask. This must be called before any other
* bitmask functions are called. Initially all of the values are
* zero
*/
/* Set the last significant bit to mark that no array has been
allocated yet */
#define _cogl_bitmask_init(bitmask) \
G_STMT_START { *(bitmask) = GUINT_TO_POINTER (1); } G_STMT_END
gboolean
_cogl_bitmask_get_from_array (const CoglBitmask *bitmask,
unsigned int bit_num);
void
_cogl_bitmask_set_in_array (CoglBitmask *bitmask,
unsigned int bit_num,
gboolean value);
void
_cogl_bitmask_set_range_in_array (CoglBitmask *bitmask,
unsigned int n_bits,
gboolean value);
void
_cogl_bitmask_clear_all_in_array (CoglBitmask *bitmask);
/*
* cogl_bitmask_set_bits:
* @dst: The bitmask to modify
* @src: The bitmask to copy bits from
*
* This makes sure that all of the bits that are set in @src are also
* set in @dst. Any unset bits in @src are left alone in @dst.
*/
void
_cogl_bitmask_set_bits (CoglBitmask *dst,
const CoglBitmask *src);
/*
* cogl_bitmask_xor_bits:
* @dst: The bitmask to modify
* @src: The bitmask to copy bits from
*
* For every bit that is set in src, the corresponding bit in dst is
* inverted.
*/
void
_cogl_bitmask_xor_bits (CoglBitmask *dst,
const CoglBitmask *src);
typedef void (* CoglBitmaskForeachFunc) (int bit_num, gpointer user_data);
/*
* cogl_bitmask_foreach:
* @bitmask: A pointer to a bitmask
* @func: A callback function
* @user_data: A pointer to pass to the callback
*
* This calls @func for each bit that is set in @bitmask.
*/
void
_cogl_bitmask_foreach (const CoglBitmask *bitmask,
CoglBitmaskForeachFunc func,
gpointer user_data);
/*
* _cogl_bitmask_get:
* @bitmask: A pointer to a bitmask
* @bit_num: A bit number
*
* Return value: whether bit number @bit_num is set in @bitmask
*/
static inline gboolean
_cogl_bitmask_get (const CoglBitmask *bitmask, unsigned int bit_num)
{
if (_cogl_bitmask_has_array (bitmask))
return _cogl_bitmask_get_from_array (bitmask, bit_num);
else if (bit_num >= COGL_BITMASK_MAX_DIRECT_BITS)
return FALSE;
else
return !!(GPOINTER_TO_UINT (*bitmask) & (1 << (bit_num + 1)));
}
/*
* _cogl_bitmask_set:
* @bitmask: A pointer to a bitmask
* @bit_num: A bit number
* @value: The new value
*
* Sets or resets a bit number @bit_num in @bitmask according to @value.
*/
static inline void
_cogl_bitmask_set (CoglBitmask *bitmask, unsigned int bit_num, gboolean value)
{
if (_cogl_bitmask_has_array (bitmask) ||
bit_num >= COGL_BITMASK_MAX_DIRECT_BITS)
_cogl_bitmask_set_in_array (bitmask, bit_num, value);
else if (value)
*bitmask = GUINT_TO_POINTER (GPOINTER_TO_UINT (*bitmask) |
(1 << (bit_num + 1)));
else
*bitmask = GUINT_TO_POINTER (GPOINTER_TO_UINT (*bitmask) &
~(1 << (bit_num + 1)));
}
/*
* _cogl_bitmask_set_range:
* @bitmask: A pointer to a bitmask
* @n_bits: The number of bits to set
* @value: The value to set
*
* Sets the first @n_bits in @bitmask to @value.
*/
static inline void
_cogl_bitmask_set_range (CoglBitmask *bitmask,
unsigned int n_bits,
gboolean value)
{
if (_cogl_bitmask_has_array (bitmask) ||
n_bits > COGL_BITMASK_MAX_DIRECT_BITS)
_cogl_bitmask_set_range_in_array (bitmask, n_bits, value);
else if (value)
*bitmask = GUINT_TO_POINTER (GPOINTER_TO_UINT (*bitmask) |
~(~(unsigned int) 1 << n_bits));
else
*bitmask = GUINT_TO_POINTER (GPOINTER_TO_UINT (*bitmask) &
((~(unsigned int) 1 << n_bits) | 1));
}
/*
* _cogl_bitmask_destroy:
* @bitmask: A pointer to a bitmask
*
* Destroys any resources allocated by the bitmask
*/
static inline void
_cogl_bitmask_destroy (CoglBitmask *bitmask)
{
if (_cogl_bitmask_has_array (bitmask))
g_array_free ((GArray *) *bitmask, TRUE);
}
/*
* _cogl_bitmask_clear_all:
* @bitmask: A pointer to a bitmask
*
* Clears all the bits in a bitmask without destroying any resources.
*/
static inline void
_cogl_bitmask_clear_all (CoglBitmask *bitmask)
{
if (_cogl_bitmask_has_array (bitmask))
_cogl_bitmask_clear_all_in_array (bitmask);
else
*bitmask = GUINT_TO_POINTER (1);
}
G_END_DECLS
#endif /* __COGL_BITMASK_H */

984
clutter/cogl/cogl/cogl-blend-string.c
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@ -1,984 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-context-private.h"
#include "cogl-debug.h"
#include "cogl-blend-string.h"
typedef enum _ParserState
{
PARSER_STATE_EXPECT_DEST_CHANNELS,
PARSER_STATE_SCRAPING_DEST_CHANNELS,
PARSER_STATE_EXPECT_FUNCTION_NAME,
PARSER_STATE_SCRAPING_FUNCTION_NAME,
PARSER_STATE_EXPECT_ARG_START,
PARSER_STATE_EXPECT_STATEMENT_END
} ParserState;
typedef enum _ParserArgState
{
PARSER_ARG_STATE_START,
PARSER_ARG_STATE_EXPECT_MINUS,
PARSER_ARG_STATE_EXPECT_COLOR_SRC_NAME,
PARSER_ARG_STATE_SCRAPING_COLOR_SRC_NAME,
PARSER_ARG_STATE_MAYBE_COLOR_MASK,
PARSER_ARG_STATE_SCRAPING_MASK,
PARSER_ARG_STATE_MAYBE_MULT,
PARSER_ARG_STATE_EXPECT_OPEN_PAREN,
PARSER_ARG_STATE_EXPECT_FACTOR,
PARSER_ARG_STATE_MAYBE_SRC_ALPHA_SATURATE,
PARSER_ARG_STATE_MAYBE_MINUS,
PARSER_ARG_STATE_EXPECT_CLOSE_PAREN,
PARSER_ARG_STATE_EXPECT_END
} ParserArgState;
#define DEFINE_COLOR_SOURCE(NAME, NAME_LEN) \
{/*.type = */COGL_BLEND_STRING_COLOR_SOURCE_ ## NAME, \
/*.name = */#NAME, \
/*.name_len = */NAME_LEN}
static CoglBlendStringColorSourceInfo blending_color_sources[] = {
DEFINE_COLOR_SOURCE (SRC_COLOR, 9),
DEFINE_COLOR_SOURCE (DST_COLOR, 9),
DEFINE_COLOR_SOURCE (CONSTANT, 8)
};
static CoglBlendStringColorSourceInfo tex_combine_color_sources[] = {
DEFINE_COLOR_SOURCE (TEXTURE, 7),
/* DEFINE_COLOR_SOURCE (TEXTURE_N, *) - handled manually */
DEFINE_COLOR_SOURCE (PRIMARY, 7),
DEFINE_COLOR_SOURCE (CONSTANT, 8),
DEFINE_COLOR_SOURCE (PREVIOUS, 8)
};
static CoglBlendStringColorSourceInfo tex_combine_texture_n_color_source = {
/*.type = */COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE_N,
/*.name = */"TEXTURE_N",
/*.name_len = */0
};
#undef DEFINE_COLOR_SOURCE
#define DEFINE_FUNCTION(NAME, NAME_LEN, ARGC) \
{ /*.type = */COGL_BLEND_STRING_FUNCTION_ ## NAME, \
/*.name = */#NAME, \
/*.name_len = */NAME_LEN, \
/*.argc = */ARGC }
/* NB: These must be sorted so any name that's a subset of another
* comes later than the longer name. */
static CoglBlendStringFunctionInfo tex_combine_functions[] = {
DEFINE_FUNCTION (REPLACE, 7, 1),
DEFINE_FUNCTION (MODULATE, 8, 2),
DEFINE_FUNCTION (ADD_SIGNED, 10, 2),
DEFINE_FUNCTION (ADD, 3, 2),
DEFINE_FUNCTION (INTERPOLATE, 11, 3),
DEFINE_FUNCTION (SUBTRACT, 8, 2),
DEFINE_FUNCTION (DOT3_RGBA, 9, 2),
DEFINE_FUNCTION (DOT3_RGB, 8, 2)
};
static CoglBlendStringFunctionInfo blend_functions[] = {
DEFINE_FUNCTION (ADD, 3, 2)
};
#undef DEFINE_FUNCTION
GQuark
cogl_blend_string_error_quark (void)
{
return g_quark_from_static_string ("cogl-blend-string-error-quark");
}
void
_cogl_blend_string_split_rgba_statement (CoglBlendStringStatement *statement,
CoglBlendStringStatement *rgb,
CoglBlendStringStatement *a)
{
int i;
memcpy (rgb, statement, sizeof (CoglBlendStringStatement));
memcpy (a, statement, sizeof (CoglBlendStringStatement));
rgb->mask = COGL_BLEND_STRING_CHANNEL_MASK_RGB;
a->mask = COGL_BLEND_STRING_CHANNEL_MASK_ALPHA;
for (i = 0; i < statement->function->argc; i++)
{
CoglBlendStringArgument *arg = &statement->args[i];
CoglBlendStringArgument *rgb_arg = &rgb->args[i];
CoglBlendStringArgument *a_arg = &a->args[i];
if (arg->source.mask == COGL_BLEND_STRING_CHANNEL_MASK_RGBA)
{
rgb_arg->source.mask = COGL_BLEND_STRING_CHANNEL_MASK_RGB;
a_arg->source.mask = COGL_BLEND_STRING_CHANNEL_MASK_ALPHA;
}
if (arg->factor.is_color &&
arg->factor.source.mask == COGL_BLEND_STRING_CHANNEL_MASK_RGBA)
{
rgb_arg->factor.source.mask = COGL_BLEND_STRING_CHANNEL_MASK_RGB;
a_arg->factor.source.mask = COGL_BLEND_STRING_CHANNEL_MASK_ALPHA;
}
}
}
static gboolean
validate_tex_combine_statements (CoglBlendStringStatement *statements,
int n_statements,
GError **error)
{
int i, j;
const char *error_string;
CoglBlendStringError detail = COGL_BLEND_STRING_ERROR_INVALID_ERROR;
for (i = 0; i < n_statements; i++)
{
for (j = 0; j < statements[i].function->argc; j++)
{
CoglBlendStringArgument *arg = &statements[i].args[j];
if (arg->source.is_zero)
{
error_string = "You can't use the constant '0' as a texture "
"combine argument";
goto error;
}
if (!arg->factor.is_one)
{
error_string = "Argument factors are only relevant to blending "
"not texture combining";
goto error;
}
}
}
return TRUE;
error:
g_set_error (error,
COGL_BLEND_STRING_ERROR,
detail,
"Invalid texture combine string: %s",
error_string);
if (COGL_DEBUG_ENABLED (COGL_DEBUG_BLEND_STRINGS))
{
g_debug ("Invalid texture combine string: %s",
error_string);
}
return FALSE;
}
static gboolean
validate_blend_statements (CoglBlendStringStatement *statements,
int n_statements,
GError **error)
{
int i, j;
const char *error_string;
CoglBlendStringError detail = COGL_BLEND_STRING_ERROR_INVALID_ERROR;
#ifdef HAVE_COGL_GL
_COGL_GET_CONTEXT (ctx, 0);
#endif
#ifdef HAVE_COGL_GL
if (n_statements == 2)
{
/* glBlendEquationSeperate is GL 2.0 only */
if (!ctx->drv.pf_glBlendEquationSeparate &&
statements[0].function->type != statements[1].function->type)
{
error_string = "Separate blend functions for the RGB an A "
"channels isn't supported by the driver";
detail = COGL_BLEND_STRING_ERROR_GPU_UNSUPPORTED_ERROR;
goto error;
}
}
#elif defined(HAVE_COGL_GLES)
if (n_statements != 1)
{
error_string = "Separate blend functions for the RGB an A "
"channels isn't supported by the GLES 1";
detail = COGL_BLEND_STRING_ERROR_GPU_UNSUPPORTED_ERROR;
goto error;
}
#endif
for (i = 0; i < n_statements; i++)
for (j = 0; j < statements[i].function->argc; j++)
{
CoglBlendStringArgument *arg = &statements[i].args[j];
if (arg->source.is_zero)
continue;
if ((j == 0 &&
arg->source.info->type !=
COGL_BLEND_STRING_COLOR_SOURCE_SRC_COLOR)
|| (j == 1 &&
arg->source.info->type !=
COGL_BLEND_STRING_COLOR_SOURCE_DST_COLOR))
{
error_string = "For blending you must always use SRC_COLOR "
"for arg0 and DST_COLOR for arg1";
goto error;
}
#ifdef HAVE_COGL_GLES
if (arg->factor.is_color &&
arg->factor.source.info->type == COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT)
{
error_string = "GLES Doesn't support constant blend factors";
detail = COGL_BLEND_STRING_ERROR_GPU_UNSUPPORTED_ERROR;
goto error;
}
#endif
}
return TRUE;
error:
g_set_error (error,
COGL_BLEND_STRING_ERROR,
detail,
"Invalid blend string: %s",
error_string);
return FALSE;
}
static gboolean
validate_statements_for_context (CoglBlendStringStatement *statements,
int n_statements,
CoglBlendStringContext context,
GError **error)
{
const char *error_string;
if (n_statements == 1)
{
if (statements[0].mask == COGL_BLEND_STRING_CHANNEL_MASK_ALPHA)
{
error_string = "You need to also give a blend statement for the RGB"
"channels";
goto error;
}
else if (statements[0].mask == COGL_BLEND_STRING_CHANNEL_MASK_RGB)
{
error_string = "You need to also give a blend statement for the "
"Alpha channel";
goto error;
}
}
if (context == COGL_BLEND_STRING_CONTEXT_BLENDING)
return validate_blend_statements (statements, n_statements, error);
else
return validate_tex_combine_statements (statements, n_statements, error);
error:
g_set_error (error,
COGL_BLEND_STRING_ERROR,
COGL_BLEND_STRING_ERROR_INVALID_ERROR,
"Invalid %s string: %s",
context == COGL_BLEND_STRING_CONTEXT_BLENDING ?
"blend" : "texture combine",
error_string);
if (COGL_DEBUG_ENABLED (COGL_DEBUG_BLEND_STRINGS))
{
g_debug ("Invalid %s string: %s",
context == COGL_BLEND_STRING_CONTEXT_BLENDING ?
"blend" : "texture combine",
error_string);
}
return FALSE;
}
static void
print_argument (CoglBlendStringArgument *arg)
{
const char *mask_names[] = {
"RGB",
"A",
"RGBA"
};
g_print (" Arg:\n");
g_print (" is zero = %s\n", arg->source.is_zero ? "yes" : "no");
if (!arg->source.is_zero)
{
g_print (" color source = %s\n", arg->source.info->name);
g_print (" one minus = %s\n", arg->source.one_minus ? "yes" : "no");
g_print (" mask = %s\n", mask_names[arg->source.mask]);
g_print (" texture = %d\n", arg->source.texture);
g_print ("\n");
g_print (" factor is_one = %s\n", arg->factor.is_one ? "yes" : "no");
g_print (" factor is_src_alpha_saturate = %s\n",
arg->factor.is_src_alpha_saturate ? "yes" : "no");
g_print (" factor is_color = %s\n", arg->factor.is_color ? "yes" : "no");
if (arg->factor.is_color)
{
g_print (" factor color:is zero = %s\n",
arg->factor.source.is_zero ? "yes" : "no");
g_print (" factor color:color source = %s\n",
arg->factor.source.info->name);
g_print (" factor color:one minus = %s\n",
arg->factor.source.one_minus ? "yes" : "no");
g_print (" factor color:mask = %s\n",
mask_names[arg->factor.source.mask]);
g_print (" factor color:texture = %d\n",
arg->factor.source.texture);
}
}
}
static void
print_statement (int num, CoglBlendStringStatement *statement)
{
const char *mask_names[] = {
"RGB",
"A",
"RGBA"
};
int i;
g_print ("Statement %d:\n", num);
g_print (" Destination channel mask = %s\n",
mask_names[statement->mask]);
g_print (" Function = %s\n", statement->function->name);
for (i = 0; i < statement->function->argc; i++)
print_argument (&statement->args[i]);
}
static const CoglBlendStringFunctionInfo *
get_function_info (const char *mark,
const char *p,
CoglBlendStringContext context)
{
gsize len = p - mark;
CoglBlendStringFunctionInfo *functions;
gsize array_len;
int i;
if (context == COGL_BLEND_STRING_CONTEXT_BLENDING)
{
functions = blend_functions;
array_len = G_N_ELEMENTS (blend_functions);
}
else
{
functions = tex_combine_functions;
array_len = G_N_ELEMENTS (tex_combine_functions);
}
for (i = 0; i < array_len; i++)
{
if (len >= functions[i].name_len
&& strncmp (mark, functions[i].name, functions[i].name_len) == 0)
return &functions[i];
}
return NULL;
}
static const CoglBlendStringColorSourceInfo *
get_color_src_info (const char *mark,
const char *p,
CoglBlendStringContext context)
{
gsize len = p - mark;
CoglBlendStringColorSourceInfo *sources;
gsize array_len;
int i;
if (context == COGL_BLEND_STRING_CONTEXT_BLENDING)
{
sources = blending_color_sources;
array_len = G_N_ELEMENTS (blending_color_sources);
}
else
{
sources = tex_combine_color_sources;
array_len = G_N_ELEMENTS (tex_combine_color_sources);
}
for (i = 0; i < array_len; i++)
{
if (len >= sources[i].name_len
&& strncmp (mark, sources[i].name, sources[i].name_len) == 0)
return &sources[i];
}
if (len >= 9 &&
strncmp (mark, "TEXTURE_", 8) == 0 &&
g_ascii_isdigit (mark[8]))
{
return &tex_combine_texture_n_color_source;
}
return NULL;
}
static gboolean
is_symbol_char (const char c)
{
return (g_ascii_isalpha (c) || c == '_') ? TRUE : FALSE;
}
static gboolean
is_alphanum_char (const char c)
{
return (g_ascii_isalnum (c) || c == '_') ? TRUE : FALSE;
}
static gboolean
parse_argument (const char *string, /* original user string */
const char **ret_p, /* start of argument IN:OUT */
const CoglBlendStringStatement *statement,
int current_arg,
CoglBlendStringArgument *arg, /* OUT */
CoglBlendStringContext context,
GError **error)
{
const char *p = *ret_p;
const char *mark = NULL;
const char *error_string = NULL;
ParserArgState state = PARSER_ARG_STATE_START;
gboolean parsing_factor = FALSE;
arg->source.is_zero = FALSE;
arg->source.info = NULL;
arg->source.texture = 0;
arg->source.one_minus = FALSE;
arg->source.mask = statement->mask;
arg->factor.is_one = FALSE;
arg->factor.is_color = FALSE;
arg->factor.is_src_alpha_saturate = FALSE;
arg->factor.source.is_zero = FALSE;
arg->factor.source.info = NULL;
arg->factor.source.texture = 0;
arg->factor.source.one_minus = FALSE;
arg->factor.source.mask = statement->mask;
do
{
if (g_ascii_isspace (*p))
continue;
if (*p == '\0')
{
error_string = "Unexpected end of string while parsing argument";
goto error;
}
switch (state)
{
case PARSER_ARG_STATE_START:
if (*p == '1')
state = PARSER_ARG_STATE_EXPECT_MINUS;
else if (*p == '0')
{
arg->source.is_zero = TRUE;
state = PARSER_ARG_STATE_EXPECT_END;
}
else
{
p--; /* backtrack */
state = PARSER_ARG_STATE_EXPECT_COLOR_SRC_NAME;
}
continue;
case PARSER_ARG_STATE_EXPECT_MINUS:
if (*p != '-')
{
error_string = "expected a '-' following the 1";
goto error;
}
arg->source.one_minus = TRUE;
state = PARSER_ARG_STATE_EXPECT_COLOR_SRC_NAME;
continue;
case PARSER_ARG_STATE_EXPECT_COLOR_SRC_NAME:
if (!is_symbol_char (*p))
{
error_string = "expected a color source name";
goto error;
}
state = PARSER_ARG_STATE_SCRAPING_COLOR_SRC_NAME;
mark = p;
if (parsing_factor)
arg->factor.is_color = TRUE;
/* fall through */
case PARSER_ARG_STATE_SCRAPING_COLOR_SRC_NAME:
if (!is_symbol_char (*p))
{
CoglBlendStringColorSource *source =
parsing_factor ? &arg->factor.source : &arg->source;
source->info = get_color_src_info (mark, p, context);
if (!source->info)
{
error_string = "Unknown color source name";
goto error;
}
if (source->info->type ==
COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE_N)
{
char *endp;
source->texture =
strtoul (&mark[strlen ("TEXTURE_")], &endp, 10);
if (mark == endp)
{
error_string = "invalid texture number given with "
"TEXTURE_N color source";
goto error;
}
p = endp;
}
state = PARSER_ARG_STATE_MAYBE_COLOR_MASK;
}
else
continue;
/* fall through */
case PARSER_ARG_STATE_MAYBE_COLOR_MASK:
if (*p != '[')
{
p--; /* backtrack */
if (!parsing_factor)
state = PARSER_ARG_STATE_MAYBE_MULT;
else
state = PARSER_ARG_STATE_EXPECT_END;
continue;
}
state = PARSER_ARG_STATE_SCRAPING_MASK;
mark = p;
/* fall through */
case PARSER_ARG_STATE_SCRAPING_MASK:
if (*p == ']')
{
gsize len = p - mark;
CoglBlendStringColorSource *source =
parsing_factor ? &arg->factor.source : &arg->source;
if (len == 5 && strncmp (mark, "[RGBA", len) == 0)
{
if (statement->mask != COGL_BLEND_STRING_CHANNEL_MASK_RGBA)
{
error_string = "You can't use an RGBA color mask if the "
"statement hasn't also got an RGBA= mask";
goto error;
}
source->mask = COGL_BLEND_STRING_CHANNEL_MASK_RGBA;
}
else if (len == 4 && strncmp (mark, "[RGB", len) == 0)
source->mask = COGL_BLEND_STRING_CHANNEL_MASK_RGB;
else if (len == 2 && strncmp (mark, "[A", len) == 0)
source->mask = COGL_BLEND_STRING_CHANNEL_MASK_ALPHA;
else
{
error_string = "Expected a channel mask of [RGBA]"
"[RGB] or [A]";
goto error;
}
if (parsing_factor)
state = PARSER_ARG_STATE_EXPECT_CLOSE_PAREN;
else
state = PARSER_ARG_STATE_MAYBE_MULT;
}
continue;
case PARSER_ARG_STATE_EXPECT_OPEN_PAREN:
if (*p != '(')
{
error_string = "Expected '(' before blend factor - the parser "
"currently requires that all blend factors "
"following a '*' be surrounded in brackets";
goto error;
}
parsing_factor = TRUE;
state = PARSER_ARG_STATE_EXPECT_FACTOR;
continue;
case PARSER_ARG_STATE_EXPECT_FACTOR:
if (*p == '1')
state = PARSER_ARG_STATE_MAYBE_MINUS;
else if (*p == '0')
{
arg->source.is_zero = TRUE;
state = PARSER_ARG_STATE_EXPECT_CLOSE_PAREN;
}
else
{
state = PARSER_ARG_STATE_MAYBE_SRC_ALPHA_SATURATE;
mark = p;
}
continue;
case PARSER_ARG_STATE_MAYBE_SRC_ALPHA_SATURATE:
if (!is_symbol_char (*p))
{
gsize len = p - mark;
if (len >= strlen ("SRC_ALPHA_SATURATE") &&
strncmp (mark, "SRC_ALPHA_SATURATE", len) == 0)
{
arg->factor.is_src_alpha_saturate = TRUE;
state = PARSER_ARG_STATE_EXPECT_CLOSE_PAREN;
}
else
{
state = PARSER_ARG_STATE_EXPECT_COLOR_SRC_NAME;
p = mark - 1; /* backtrack */
}
}
continue;
case PARSER_ARG_STATE_MAYBE_MINUS:
if (*p == '-')
{
arg->factor.source.one_minus = TRUE;
state = PARSER_ARG_STATE_EXPECT_COLOR_SRC_NAME;
}
else
{
arg->factor.is_one = TRUE;
state = PARSER_ARG_STATE_EXPECT_CLOSE_PAREN;
}
continue;
case PARSER_ARG_STATE_EXPECT_CLOSE_PAREN:
if (*p != ')')
{
error_string = "Expected closing parenthesis after blend factor";
goto error;
}
state = PARSER_ARG_STATE_EXPECT_END;
continue;
case PARSER_ARG_STATE_MAYBE_MULT:
if (*p == '*')
{
state = PARSER_ARG_STATE_EXPECT_OPEN_PAREN;
continue;
}
arg->factor.is_one = TRUE;
state = PARSER_ARG_STATE_EXPECT_END;
/* fall through */
case PARSER_ARG_STATE_EXPECT_END:
if (*p != ',' && *p != ')')
{
error_string = "expected , or )";
goto error;
}
*ret_p = p - 1;
return TRUE;
}
}
while (p++);
error:
{
int offset = p - string;
g_set_error (error,
COGL_BLEND_STRING_ERROR,
COGL_BLEND_STRING_ERROR_ARGUMENT_PARSE_ERROR,
"Syntax error for argument %d at offset %d: %s",
current_arg,
offset,
error_string);
if (COGL_DEBUG_ENABLED (COGL_DEBUG_BLEND_STRINGS))
{
g_debug ("Syntax error for argument %d at offset %d: %s",
current_arg, offset, error_string);
}
return FALSE;
}
}
int
_cogl_blend_string_compile (const char *string,
CoglBlendStringContext context,
CoglBlendStringStatement *statements,
GError **error)
{
const char *p = string;
const char *mark = NULL;
const char *error_string;
ParserState state = PARSER_STATE_EXPECT_DEST_CHANNELS;
CoglBlendStringStatement *statement = statements;
int current_statement = 0;
int current_arg = 0;
int remaining_argc = 0;
#if 0
COGL_DEBUG_SET_FLAG (COGL_DEBUG_BLEND_STRINGS);
#endif
if (COGL_DEBUG_ENABLED (COGL_DEBUG_BLEND_STRINGS))
{
COGL_NOTE (BLEND_STRINGS, "Compiling %s string:\n%s\n",
context == COGL_BLEND_STRING_CONTEXT_BLENDING ?
"blend" : "texture combine",
string);
}
do
{
if (g_ascii_isspace (*p))
continue;
if (*p == '\0')
{
switch (state)
{
case PARSER_STATE_EXPECT_DEST_CHANNELS:
if (current_statement != 0)
goto finished;
error_string = "Empty statement";
goto error;
case PARSER_STATE_SCRAPING_DEST_CHANNELS:
error_string = "Expected an '=' following the destination "
"channel mask";
goto error;
case PARSER_STATE_EXPECT_FUNCTION_NAME:
error_string = "Expected a function name";
goto error;
case PARSER_STATE_SCRAPING_FUNCTION_NAME:
error_string = "Expected parenthesis after the function name";
goto error;
case PARSER_STATE_EXPECT_ARG_START:
error_string = "Expected to find the start of an argument";
goto error;
case PARSER_STATE_EXPECT_STATEMENT_END:
error_string = "Expected closing parenthesis for statement";
goto error;
}
}
switch (state)
{
case PARSER_STATE_EXPECT_DEST_CHANNELS:
mark = p;
state = PARSER_STATE_SCRAPING_DEST_CHANNELS;
/* fall through */
case PARSER_STATE_SCRAPING_DEST_CHANNELS:
if (*p != '=')
continue;
if (strncmp (mark, "RGBA", 4) == 0)
statement->mask = COGL_BLEND_STRING_CHANNEL_MASK_RGBA;
else if (strncmp (mark, "RGB", 3) == 0)
statement->mask = COGL_BLEND_STRING_CHANNEL_MASK_RGB;
else if (strncmp (mark, "A", 1) == 0)
statement->mask = COGL_BLEND_STRING_CHANNEL_MASK_ALPHA;
else
{
error_string = "Unknown destination channel mask; "
"expected RGBA=, RGB= or A=";
goto error;
}
state = PARSER_STATE_EXPECT_FUNCTION_NAME;
continue;
case PARSER_STATE_EXPECT_FUNCTION_NAME:
mark = p;
state = PARSER_STATE_SCRAPING_FUNCTION_NAME;
/* fall through */
case PARSER_STATE_SCRAPING_FUNCTION_NAME:
if (*p != '(')
{
if (!is_alphanum_char (*p))
{
error_string = "non alpha numeric character in function"
"name";
goto error;
}
continue;
}
statement->function = get_function_info (mark, p, context);
if (!statement->function)
{
error_string = "Unknown function name";
goto error;
}
remaining_argc = statement->function->argc;
current_arg = 0;
state = PARSER_STATE_EXPECT_ARG_START;
/* fall through */
case PARSER_STATE_EXPECT_ARG_START:
if (*p != '(' && *p != ',')
continue;
if (remaining_argc)
{
p++; /* parse_argument expects to see the first char of the arg */
if (!parse_argument (string, &p, statement,
current_arg, &statement->args[current_arg],
context, error))
return 0;
current_arg++;
remaining_argc--;
}
if (!remaining_argc)
state = PARSER_STATE_EXPECT_STATEMENT_END;
continue;
case PARSER_STATE_EXPECT_STATEMENT_END:
if (*p != ')')
{
error_string = "Expected end of statement";
goto error;
}
state = PARSER_STATE_EXPECT_DEST_CHANNELS;
if (current_statement++ == 1)
goto finished;
statement = &statements[current_statement];
}
}
while (p++);
finished:
if (COGL_DEBUG_ENABLED (COGL_DEBUG_BLEND_STRINGS))
{
if (current_statement > 0)
print_statement (0, &statements[0]);
if (current_statement > 1)
print_statement (1, &statements[1]);
}
if (!validate_statements_for_context (statements,
current_statement,
context,
error))
return 0;
return current_statement;
error:
{
int offset = p - string;
g_set_error (error,
COGL_BLEND_STRING_ERROR,
COGL_BLEND_STRING_ERROR_PARSE_ERROR,
"Syntax error at offset %d: %s",
offset,
error_string);
if (COGL_DEBUG_ENABLED (COGL_DEBUG_BLEND_STRINGS))
{
g_debug ("Syntax error at offset %d: %s",
offset, error_string);
}
return 0;
}
}
/*
* INTERNAL TESTING CODE ...
*/
struct _TestString
{
const char *string;
CoglBlendStringContext context;
};
int
_cogl_blend_string_test (void)
{
struct _TestString strings[] = {
{" A = MODULATE ( TEXTURE[RGB], PREVIOUS[A], PREVIOUS[A] ) ",
COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE },
{" RGB = MODULATE ( TEXTURE[RGB], PREVIOUS[A] ) ",
COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE },
{"A=ADD(TEXTURE[A],PREVIOUS[RGB])",
COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE },
{"A=ADD(TEXTURE[A],PREVIOUS[RGB])",
COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE },
{"RGBA = ADD(SRC_COLOR*(SRC_COLOR[A]), DST_COLOR*(1-SRC_COLOR[A]))",
COGL_BLEND_STRING_CONTEXT_BLENDING },
{"RGB = ADD(SRC_COLOR, DST_COLOR*(0))",
COGL_BLEND_STRING_CONTEXT_BLENDING },
{"RGB = ADD(SRC_COLOR, 0)",
COGL_BLEND_STRING_CONTEXT_BLENDING },
{"RGB = ADD()",
COGL_BLEND_STRING_CONTEXT_BLENDING },
{"RGB = ADD(SRC_COLOR, 0, DST_COLOR)",
COGL_BLEND_STRING_CONTEXT_BLENDING },
{NULL}
};
int i;
GError *error = NULL;
for (i = 0; strings[i].string; i++)
{
CoglBlendStringStatement statements[2];
int count = _cogl_blend_string_compile (strings[i].string,
strings[i].context,
statements,
&error);
if (!count)
{
g_print ("Failed to parse string:\n%s\n%s\n",
strings[i].string,
error->message);
g_error_free (error);
error = NULL;
continue;
}
g_print ("Original:\n");
g_print ("%s\n", strings[i].string);
if (count > 0)
print_statement (0, &statements[0]);
if (count > 1)
print_statement (1, &statements[1]);
}
return 0;
}

137
clutter/cogl/cogl/cogl-blend-string.h
View File

@ -1,137 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef COGL_BLEND_STRING_H
#define COGL_BLEND_STRING_H
#include <stdlib.h>
#include <glib.h>
typedef enum _CoglBlendStringContext
{
COGL_BLEND_STRING_CONTEXT_BLENDING,
COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE
} CoglBlendStringContext;
/* NB: debug stringify code will get upset if these
* are re-ordered */
typedef enum _CoglBlendStringChannelMask
{
COGL_BLEND_STRING_CHANNEL_MASK_RGB,
COGL_BLEND_STRING_CHANNEL_MASK_ALPHA,
COGL_BLEND_STRING_CHANNEL_MASK_RGBA
} CoglBlendStringChannelMask;
typedef enum _CoglBlendStringColorSourceType
{
/* blending */
COGL_BLEND_STRING_COLOR_SOURCE_SRC_COLOR,
COGL_BLEND_STRING_COLOR_SOURCE_DST_COLOR,
/* shared */
COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT,
/* texture combining */
COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE,
COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE_N,
COGL_BLEND_STRING_COLOR_SOURCE_PRIMARY,
COGL_BLEND_STRING_COLOR_SOURCE_PREVIOUS
} CoglBlendStringColorSourceType;
typedef struct _CoglBlendStringColorSourceInfo
{
CoglBlendStringColorSourceType type;
const char *name;
gsize name_len;
} CoglBlendStringColorSourceInfo;
typedef struct _CoglBlendStringColorSource
{
gboolean is_zero;
const CoglBlendStringColorSourceInfo *info;
int texture; /* for the TEXTURE_N color source */
gboolean one_minus;
CoglBlendStringChannelMask mask;
} CoglBlendStringColorSource;
typedef struct _CoglBlendStringFactor
{
gboolean is_one;
gboolean is_src_alpha_saturate;
gboolean is_color;
CoglBlendStringColorSource source;
} CoglBlendStringFactor;
typedef struct _CoglBlendStringArgument
{
CoglBlendStringColorSource source;
CoglBlendStringFactor factor;
} CoglBlendStringArgument;
typedef enum _CoglBlendStringFunctionType
{
/* shared */
COGL_BLEND_STRING_FUNCTION_ADD,
/* texture combine only */
COGL_BLEND_STRING_FUNCTION_REPLACE,
COGL_BLEND_STRING_FUNCTION_MODULATE,
COGL_BLEND_STRING_FUNCTION_ADD_SIGNED,
COGL_BLEND_STRING_FUNCTION_INTERPOLATE,
COGL_BLEND_STRING_FUNCTION_SUBTRACT,
COGL_BLEND_STRING_FUNCTION_DOT3_RGB,
COGL_BLEND_STRING_FUNCTION_DOT3_RGBA
} CoglBlendStringFunctionType;
typedef struct _CoglBlendStringFunctionInfo
{
enum _CoglBlendStringFunctionType type;
const char *name;
gsize name_len;
int argc;
} CoglBlendStringFunctionInfo;
typedef struct _CoglBlendStringStatement
{
CoglBlendStringChannelMask mask;
const CoglBlendStringFunctionInfo *function;
CoglBlendStringArgument args[3];
} CoglBlendStringStatement;
gboolean
_cogl_blend_string_compile (const char *string,
CoglBlendStringContext context,
CoglBlendStringStatement *statements,
GError **error);
void
_cogl_blend_string_split_rgba_statement (CoglBlendStringStatement *statement,
CoglBlendStringStatement *rgb,
CoglBlendStringStatement *a);
#endif /* COGL_BLEND_STRING_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "cogl.h"
#include "cogl-blit.h"
#include "cogl-context-private.h"
#include "cogl-framebuffer-private.h"
#include "cogl-texture-2d-private.h"
static const CoglBlitMode *_cogl_blit_default_mode = NULL;
static gboolean
_cogl_blit_texture_render_begin (CoglBlitData *data)
{
CoglHandle fbo;
CoglPipeline *pipeline;
unsigned int dst_width, dst_height;
_COGL_GET_CONTEXT (ctx, FALSE);
fbo = _cogl_offscreen_new_to_texture_full
(data->dst_tex, COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL, 0 /* level */);
if (fbo == COGL_INVALID_HANDLE)
return FALSE;
cogl_push_framebuffer (fbo);
cogl_handle_unref (fbo);
dst_width = cogl_texture_get_width (data->dst_tex);
dst_height = cogl_texture_get_height (data->dst_tex);
/* Set up an orthographic projection so we can use pixel
coordinates to render to the texture */
cogl_ortho (0, /* left */
dst_width, /* right */
dst_height, /* bottom */
0, /* top */
-1, /* near */
1 /* far */);
/* We cache a pipeline used for migrating on to the context so
that it doesn't have to continuously regenerate a shader
program */
if (ctx->blit_texture_pipeline == NULL)
{
ctx->blit_texture_pipeline = cogl_pipeline_new ();
cogl_pipeline_set_layer_filters (ctx->blit_texture_pipeline, 0,
COGL_PIPELINE_FILTER_NEAREST,
COGL_PIPELINE_FILTER_NEAREST);
/* Disable blending by just directly taking the contents of the
source texture */
cogl_pipeline_set_blend (ctx->blit_texture_pipeline,
"RGBA = ADD(SRC_COLOR, 0)",
NULL);
}
pipeline = ctx->blit_texture_pipeline;
cogl_pipeline_set_layer_texture (pipeline, 0, data->src_tex);
cogl_push_source (pipeline);
return TRUE;
}
static void
_cogl_blit_texture_render_blit (CoglBlitData *data,
unsigned int src_x,
unsigned int src_y,
unsigned int dst_x,
unsigned int dst_y,
unsigned int width,
unsigned int height)
{
cogl_rectangle_with_texture_coords (dst_x, dst_y,
dst_x + width,
dst_y + height,
src_x / (float) data->src_width,
src_y / (float) data->src_height,
(src_x + width) /
(float) data->src_width,
(src_y + height) /
(float) data->src_height);
}
static void
_cogl_blit_texture_render_end (CoglBlitData *data)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl_pop_source ();
cogl_pop_framebuffer ();
/* Attach the target texture to the texture render pipeline so that
we don't keep a reference to the source texture forever. This is
assuming that the destination texture will live for a long time
which is currently the case when cogl_blit_* is used from the
atlas code. It may be better in future to keep around a set of
dummy 1x1 textures for each texture target that we could bind
instead. This would also be useful when using a pipeline as a
hash table key such as for the ARBfp program cache. */
cogl_pipeline_set_layer_texture (ctx->blit_texture_pipeline, 0,
data->dst_tex);
}
static gboolean
_cogl_blit_framebuffer_begin (CoglBlitData *data)
{
CoglHandle dst_fbo, src_fbo;
_COGL_GET_CONTEXT (ctx, FALSE);
/* We can only blit between FBOs if both textures are the same
format and the blit framebuffer extension is supported */
if ((cogl_texture_get_format (data->src_tex) & ~COGL_A_BIT) !=
(cogl_texture_get_format (data->dst_tex) & ~COGL_A_BIT) ||
!cogl_features_available (COGL_FEATURE_OFFSCREEN_BLIT))
return FALSE;
dst_fbo = _cogl_offscreen_new_to_texture_full
(data->dst_tex, COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL, 0 /* level */);
if (dst_fbo == COGL_INVALID_HANDLE)
return FALSE;
src_fbo = _cogl_offscreen_new_to_texture_full
(data->src_tex, COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL, 0 /* level */);
if (src_fbo == COGL_INVALID_HANDLE)
{
cogl_handle_unref (dst_fbo);
return FALSE;
}
_cogl_push_framebuffers (dst_fbo, src_fbo);
cogl_handle_unref (src_fbo);
cogl_handle_unref (dst_fbo);
return TRUE;
}
static void
_cogl_blit_framebuffer_blit (CoglBlitData *data,
unsigned int src_x,
unsigned int src_y,
unsigned int dst_x,
unsigned int dst_y,
unsigned int width,
unsigned int height)
{
_cogl_blit_framebuffer (src_x, src_y,
dst_x, dst_y,
width, height);
}
static void
_cogl_blit_framebuffer_end (CoglBlitData *data)
{
cogl_pop_framebuffer ();
}
static gboolean
_cogl_blit_copy_tex_sub_image_begin (CoglBlitData *data)
{
CoglHandle fbo;
_COGL_GET_CONTEXT (ctx, FALSE);
/* This will only work if the target texture is a CoglTexture2D */
if (!_cogl_is_texture_2d (data->dst_tex))
return FALSE;
fbo = _cogl_offscreen_new_to_texture_full
(data->src_tex, COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL, 0 /* level */);
if (fbo == COGL_INVALID_HANDLE)
return FALSE;
cogl_push_framebuffer (fbo);
cogl_handle_unref (fbo);
return TRUE;
}
static void
_cogl_blit_copy_tex_sub_image_blit (CoglBlitData *data,
unsigned int src_x,
unsigned int src_y,
unsigned int dst_x,
unsigned int dst_y,
unsigned int width,
unsigned int height)
{
_cogl_texture_2d_copy_from_framebuffer (data->dst_tex,
dst_x, dst_y,
src_x, src_y,
width, height);
}
static void
_cogl_blit_copy_tex_sub_image_end (CoglBlitData *data)
{
cogl_pop_framebuffer ();
}
static gboolean
_cogl_blit_get_tex_data_begin (CoglBlitData *data)
{
data->format = cogl_texture_get_format (data->src_tex);
data->bpp = _cogl_get_format_bpp (data->format);
data->image_data = g_malloc (data->bpp * data->src_width *
data->src_height);
cogl_texture_get_data (data->src_tex, data->format,
data->src_width * data->bpp, data->image_data);
return TRUE;
}
static void
_cogl_blit_get_tex_data_blit (CoglBlitData *data,
unsigned int src_x,
unsigned int src_y,
unsigned int dst_x,
unsigned int dst_y,
unsigned int width,
unsigned int height)
{
cogl_texture_set_region (data->dst_tex,
src_x, src_y,
dst_x, dst_y,
width, height,
data->src_width, data->src_height,
data->format,
data->src_width * data->bpp,
data->image_data);
}
static void
_cogl_blit_get_tex_data_end (CoglBlitData *data)
{
g_free (data->image_data);
}
/* These should be specified in order of preference */
static const CoglBlitMode
_cogl_blit_modes[] =
{
{
"texture-render",
_cogl_blit_texture_render_begin,
_cogl_blit_texture_render_blit,
_cogl_blit_texture_render_end
},
{
"framebuffer",
_cogl_blit_framebuffer_begin,
_cogl_blit_framebuffer_blit,
_cogl_blit_framebuffer_end
},
{
"copy-tex-sub-image",
_cogl_blit_copy_tex_sub_image_begin,
_cogl_blit_copy_tex_sub_image_blit,
_cogl_blit_copy_tex_sub_image_end
},
{
"get-tex-data",
_cogl_blit_get_tex_data_begin,
_cogl_blit_get_tex_data_blit,
_cogl_blit_get_tex_data_end
}
};
void
_cogl_blit_begin (CoglBlitData *data,
CoglHandle dst_tex,
CoglHandle src_tex)
{
int i;
if (_cogl_blit_default_mode == NULL)
{
const char *default_mode_string;
/* Allow the default to be specified with an environment
variable. For the time being these functions are only used
when blitting between atlas textures so the environment
variable is named to be specific to the atlas code. If we
want to use the code in other places we should create another
environment variable for each specific use case */
if ((default_mode_string = g_getenv ("COGL_ATLAS_DEFAULT_BLIT_MODE")))
{
for (i = 0; i < G_N_ELEMENTS (_cogl_blit_modes); i++)
if (!strcmp (_cogl_blit_modes[i].name, default_mode_string))
{
_cogl_blit_default_mode = _cogl_blit_modes + i;
break;
}
if (i >= G_N_ELEMENTS (_cogl_blit_modes))
{
g_warning ("Unknown blit mode %s", default_mode_string);
_cogl_blit_default_mode = _cogl_blit_modes;
}
}
else
/* Default to the first blit mode */
_cogl_blit_default_mode = _cogl_blit_modes;
}
data->dst_tex = dst_tex;
data->src_tex = src_tex;
data->src_width = cogl_texture_get_width (src_tex);
data->src_height = cogl_texture_get_height (src_tex);
/* Try the default blit mode first */
if (!_cogl_blit_default_mode->begin_func (data))
{
COGL_NOTE (ATLAS, "Failed to set up blit mode %s",
_cogl_blit_default_mode->name);
/* Try all of the other modes in order */
for (i = 0; i < G_N_ELEMENTS (_cogl_blit_modes); i++)
if (_cogl_blit_modes + i != _cogl_blit_default_mode &&
_cogl_blit_modes[i].begin_func (data))
{
/* Use this mode as the default from now on */
_cogl_blit_default_mode = _cogl_blit_modes + i;
break;
}
else
COGL_NOTE (ATLAS,
"Failed to set up blit mode %s",
_cogl_blit_modes[i].name);
/* The last blit mode can't fail so this should never happen */
g_return_if_fail (i < G_N_ELEMENTS (_cogl_blit_modes));
}
data->blit_mode = _cogl_blit_default_mode;
COGL_NOTE (ATLAS, "Setup blit using %s", _cogl_blit_default_mode->name);
}
void
_cogl_blit (CoglBlitData *data,
unsigned int src_x,
unsigned int src_y,
unsigned int dst_x,
unsigned int dst_y,
unsigned int width,
unsigned int height)
{
data->blit_mode->blit_func (data, src_x, src_y, dst_x, dst_y, width, height);
}
void
_cogl_blit_end (CoglBlitData *data)
{
data->blit_mode->end_func (data);
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __COGL_BLIT_H
#define __COGL_BLIT_H
#include <glib.h>
#include "cogl-handle.h"
/* This structures and functions are used when a series of blits needs
to be performed between two textures. In this case there are
multiple methods we can use, most of which involve transferring
between an FBO bound to the texture. */
typedef struct _CoglBlitData CoglBlitData;
typedef gboolean (* CoglBlitBeginFunc) (CoglBlitData *data);
typedef void (* CoglBlitEndFunc) (CoglBlitData *data);
typedef void (* CoglBlitFunc) (CoglBlitData *data,
unsigned int src_x,
unsigned int src_y,
unsigned int dst_x,
unsigned int dst_y,
unsigned int width,
unsigned int height);
typedef struct
{
const char *name;
CoglBlitBeginFunc begin_func;
CoglBlitFunc blit_func;
CoglBlitEndFunc end_func;
} CoglBlitMode;
struct _CoglBlitData
{
CoglHandle src_tex, dst_tex;
unsigned int src_width;
unsigned int src_height;
const CoglBlitMode *blit_mode;
/* If we're not using an FBO then we g_malloc a buffer and copy the
complete texture data in */
unsigned char *image_data;
CoglPixelFormat format;
int bpp;
};
void
_cogl_blit_begin (CoglBlitData *data,
CoglHandle dst_tex,
CoglHandle src_tex);
void
_cogl_blit (CoglBlitData *data,
unsigned int src_x,
unsigned int src_y,
unsigned int dst_x,
unsigned int dst_y,
unsigned int width,
unsigned int height);
void
_cogl_blit_end (CoglBlitData *data);
#endif /* __COGL_BLIT_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Damien Lespiau <damien.lespiau@intel.com>
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_BUFFER_PRIVATE_H__
#define __COGL_BUFFER_PRIVATE_H__
#include <glib.h>
#include "cogl.h"
#include "cogl-object-private.h"
#include "cogl-buffer.h"
G_BEGIN_DECLS
#define COGL_BUFFER(buffer) ((CoglBuffer *)(buffer))
typedef struct _CoglBufferVtable CoglBufferVtable;
struct _CoglBufferVtable
{
void * (* map) (CoglBuffer *buffer,
CoglBufferAccess access,
CoglBufferMapHint hints);
void (* unmap) (CoglBuffer *buffer);
gboolean (* set_data) (CoglBuffer *buffer,
unsigned int offset,
const void *data,
unsigned int size);
};
typedef enum _CoglBufferFlags
{
COGL_BUFFER_FLAG_NONE = 0,
COGL_BUFFER_FLAG_BUFFER_OBJECT = 1UL << 0, /* real openGL buffer object */
COGL_BUFFER_FLAG_MAPPED = 1UL << 1,
COGL_BUFFER_FLAG_MAPPED_FALLBACK = 1UL << 2
} CoglBufferFlags;
typedef enum {
COGL_BUFFER_USAGE_HINT_TEXTURE,
COGL_BUFFER_USAGE_HINT_VERTEX_ARRAY,
COGL_BUFFER_USAGE_HINT_INDEX_ARRAY
} CoglBufferUsageHint;
typedef enum {
COGL_BUFFER_BIND_TARGET_PIXEL_PACK,
COGL_BUFFER_BIND_TARGET_PIXEL_UNPACK,
COGL_BUFFER_BIND_TARGET_VERTEX_ARRAY,
COGL_BUFFER_BIND_TARGET_INDEX_ARRAY,
COGL_BUFFER_BIND_TARGET_COUNT
} CoglBufferBindTarget;
struct _CoglBuffer
{
CoglObject _parent;
CoglBufferVtable vtable;
CoglBufferBindTarget last_target;
CoglBufferFlags flags;
GLuint gl_handle; /* OpenGL handle */
unsigned int size; /* size of the buffer, in bytes */
CoglBufferUsageHint usage_hint;
CoglBufferUpdateHint update_hint;
guint8 *data; /* points to the mapped memory when
* the CoglBuffer is a VBO, PBO, ... or
* points to allocated memory in the
* fallback paths */
int immutable_ref;
guint store_created:1;
};
/* This is used to register a type to the list of handle types that
will be considered a texture in cogl_is_texture() */
void
_cogl_buffer_register_buffer_type (GQuark type);
#define COGL_BUFFER_DEFINE(TypeName, type_name) \
COGL_OBJECT_DEFINE_WITH_CODE \
(TypeName, type_name, \
_cogl_buffer_register_buffer_type (_cogl_object_ \
## type_name ## _get_type ()))
void
_cogl_buffer_initialize (CoglBuffer *buffer,
unsigned int size,
gboolean use_malloc,
CoglBufferBindTarget default_target,
CoglBufferUsageHint usage_hint,
CoglBufferUpdateHint update_hint);
void
_cogl_buffer_fini (CoglBuffer *buffer);
void *
_cogl_buffer_bind (CoglBuffer *buffer,
CoglBufferBindTarget target);
void
_cogl_buffer_unbind (CoglBuffer *buffer);
CoglBufferUsageHint
_cogl_buffer_get_usage_hint (CoglBuffer *buffer);
GLenum
_cogl_buffer_access_to_gl_enum (CoglBufferAccess access);
GLenum
_cogl_buffer_hints_to_gl_enum (CoglBufferUsageHint usage_hint,
CoglBufferUpdateHint update_hint);
CoglBuffer *
_cogl_buffer_immutable_ref (CoglBuffer *buffer);
void
_cogl_buffer_immutable_unref (CoglBuffer *buffer);
/* This is a wrapper around cogl_buffer_map for internal use when we
want to map the buffer for write only to replace the entire
contents. If the map fails then it will fallback to writing to a
temporary buffer. When _cogl_buffer_unmap_for_fill_or_fallback is
called the temporary buffer will be copied into the array. Note
that these calls share a global array so they can not be nested. */
void *
_cogl_buffer_map_for_fill_or_fallback (CoglBuffer *buffer);
void
_cogl_buffer_unmap_for_fill_or_fallback (CoglBuffer *buffer);
G_END_DECLS
#endif /* __COGL_BUFFER_PRIVATE_H__ */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Damien Lespiau <damien.lespiau@intel.com>
* Robert Bragg <robert@linux.intel.com>
*/
/* For an overview of the functionality implemented here, please see
* cogl-buffer.h, which contains the gtk-doc section overview for the
* Pixel Buffers API.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <glib.h>
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-util.h"
#include "cogl-context-private.h"
#include "cogl-handle.h"
#include "cogl-pixel-array-private.h"
/*
* GL/GLES compatibility defines for the buffer API:
*/
#if defined (HAVE_COGL_GL)
#define glGenBuffers ctx->drv.pf_glGenBuffers
#define glBindBuffer ctx->drv.pf_glBindBuffer
#define glBufferData ctx->drv.pf_glBufferData
#define glBufferSubData ctx->drv.pf_glBufferSubData
#define glGetBufferSubData ctx->drv.pf_glGetBufferSubData
#define glDeleteBuffers ctx->drv.pf_glDeleteBuffers
#endif
/* These two are always accessed through an extension, even on GLES */
#define glMapBuffer ctx->drv.pf_glMapBuffer
#define glUnmapBuffer ctx->drv.pf_glUnmapBuffer
#ifndef GL_PIXEL_PACK_BUFFER
#define GL_PIXEL_PACK_BUFFER 0x88EB
#endif
#ifndef GL_PIXEL_UNPACK_BUFFER
#define GL_PIXEL_UNPACK_BUFFER 0x88EC
#endif
#ifndef GL_ARRAY_BUFFER
#define GL_ARRAY_BUFFER 0x8892
#endif
#ifndef GL_ELEMENT_ARRAY_BUFFER
#define GL_ARRAY_BUFFER 0x8893
#endif
#ifndef GL_READ_ONLY
#define GL_READ_ONLY 0x88B8
#endif
#ifndef GL_WRITE_ONLY
#define GL_WRITE_ONLY 0x88B9
#endif
#ifndef GL_READ_WRITE
#define GL_READ_WRITE 0x88BA
#endif
/* XXX:
* The CoglHandle macros don't support any form of inheritance, so for
* now we implement the CoglObject support for the CoglBuffer
* abstract class manually.
*/
void
_cogl_buffer_register_buffer_type (GQuark type)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
ctx->buffer_types = g_slist_prepend (ctx->buffer_types,
GINT_TO_POINTER (type));
}
gboolean
cogl_is_buffer (const void *object)
{
const CoglHandleObject *obj = object;
GSList *l;
_COGL_GET_CONTEXT (ctx, FALSE);
if (object == NULL)
return FALSE;
for (l = ctx->buffer_types; l; l = l->next)
if (GPOINTER_TO_INT (l->data) == obj->klass->type)
return TRUE;
return FALSE;
}
static GLenum
convert_bind_target_to_gl_target (CoglBufferBindTarget target)
{
switch (target)
{
case COGL_BUFFER_BIND_TARGET_PIXEL_PACK:
return GL_PIXEL_PACK_BUFFER;
case COGL_BUFFER_BIND_TARGET_PIXEL_UNPACK:
return GL_PIXEL_UNPACK_BUFFER;
case COGL_BUFFER_BIND_TARGET_VERTEX_ARRAY:
return GL_ARRAY_BUFFER;
case COGL_BUFFER_BIND_TARGET_INDEX_ARRAY:
return GL_ELEMENT_ARRAY_BUFFER;
default:
g_return_val_if_reached (COGL_BUFFER_BIND_TARGET_PIXEL_UNPACK);
}
}
static void *
bo_map (CoglBuffer *buffer,
CoglBufferAccess access,
CoglBufferMapHint hints)
{
guint8 *data;
CoglBufferBindTarget target;
GLenum gl_target;
_COGL_GET_CONTEXT (ctx, NULL);
if ((access & COGL_BUFFER_ACCESS_READ) &&
!cogl_features_available (COGL_FEATURE_MAP_BUFFER_FOR_READ))
return NULL;
if ((access & COGL_BUFFER_ACCESS_WRITE) &&
!cogl_features_available (COGL_FEATURE_MAP_BUFFER_FOR_WRITE))
return NULL;
target = buffer->last_target;
_cogl_buffer_bind (buffer, target);
gl_target = convert_bind_target_to_gl_target (target);
/* create an empty store if we don't have one yet. creating the store
* lazily allows the user of the CoglBuffer to set a hint before the
* store is created. */
if (!buffer->store_created || (hints & COGL_BUFFER_MAP_HINT_DISCARD))
{
GE( glBufferData (gl_target,
buffer->size,
NULL,
_cogl_buffer_hints_to_gl_enum (buffer->usage_hint,
buffer->update_hint)) );
buffer->store_created = TRUE;
}
GE_RET( data, glMapBuffer (gl_target,
_cogl_buffer_access_to_gl_enum (access)) );
if (data)
buffer->flags |= COGL_BUFFER_FLAG_MAPPED;
_cogl_buffer_unbind (buffer);
return data;
}
static void
bo_unmap (CoglBuffer *buffer)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
_cogl_buffer_bind (buffer, buffer->last_target);
GE( glUnmapBuffer (convert_bind_target_to_gl_target (buffer->last_target)) );
buffer->flags &= ~COGL_BUFFER_FLAG_MAPPED;
_cogl_buffer_unbind (buffer);
}
static gboolean
bo_set_data (CoglBuffer *buffer,
unsigned int offset,
const void *data,
unsigned int size)
{
CoglBufferBindTarget target;
GLenum gl_target;
_COGL_GET_CONTEXT (ctx, FALSE);
target = buffer->last_target;
_cogl_buffer_bind (buffer, target);
gl_target = convert_bind_target_to_gl_target (target);
/* create an empty store if we don't have one yet. creating the store
* lazily allows the user of the CoglBuffer to set a hint before the
* store is created. */
if (!buffer->store_created)
{
GE( glBufferData (gl_target,
buffer->size,
NULL,
_cogl_buffer_hints_to_gl_enum (buffer->usage_hint,
buffer->update_hint)) );
buffer->store_created = TRUE;
}
GE( glBufferSubData (gl_target, offset, size, data) );
_cogl_buffer_unbind (buffer);
return TRUE;
}
/*
* Fallback path, buffer->data points to a malloc'ed buffer.
*/
static void *
malloc_map (CoglBuffer *buffer,
CoglBufferAccess access,
CoglBufferMapHint hints)
{
buffer->flags |= COGL_BUFFER_FLAG_MAPPED;
return buffer->data;
}
static void
malloc_unmap (CoglBuffer *buffer)
{
buffer->flags &= ~COGL_BUFFER_FLAG_MAPPED;
}
static gboolean
malloc_set_data (CoglBuffer *buffer,
unsigned int offset,
const void *data,
unsigned int size)
{
memcpy (buffer->data + offset, data, size);
return TRUE;
}
void
_cogl_buffer_initialize (CoglBuffer *buffer,
unsigned int size,
gboolean use_malloc,
CoglBufferBindTarget default_target,
CoglBufferUsageHint usage_hint,
CoglBufferUpdateHint update_hint)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
buffer->flags = COGL_BUFFER_FLAG_NONE;
buffer->store_created = FALSE;
buffer->size = size;
buffer->last_target = default_target;
buffer->usage_hint = usage_hint;
buffer->update_hint = update_hint;
buffer->data = NULL;
buffer->immutable_ref = 0;
if (use_malloc)
{
buffer->vtable.map = malloc_map;
buffer->vtable.unmap = malloc_unmap;
buffer->vtable.set_data = malloc_set_data;
buffer->data = g_malloc (size);
}
else
{
buffer->vtable.map = bo_map;
buffer->vtable.unmap = bo_unmap;
buffer->vtable.set_data = bo_set_data;
GE( glGenBuffers (1, &buffer->gl_handle) );
buffer->flags |= COGL_BUFFER_FLAG_BUFFER_OBJECT;
}
}
void
_cogl_buffer_fini (CoglBuffer *buffer)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
g_return_if_fail (!(buffer->flags & COGL_BUFFER_FLAG_MAPPED));
g_return_if_fail (buffer->immutable_ref == 0);
if (buffer->flags & COGL_BUFFER_FLAG_BUFFER_OBJECT)
GE( glDeleteBuffers (1, &buffer->gl_handle) );
else
g_free (buffer->data);
}
GLenum
_cogl_buffer_access_to_gl_enum (CoglBufferAccess access)
{
if ((access & COGL_BUFFER_ACCESS_READ_WRITE) == COGL_BUFFER_ACCESS_READ_WRITE)
return GL_READ_WRITE;
else if (access & COGL_BUFFER_ACCESS_WRITE)
return GL_WRITE_ONLY;
else
return GL_READ_ONLY;
}
/* OpenGL ES 1.1 and 2 only know about STATIC_DRAW and DYNAMIC_DRAW */
#if defined (COGL_HAS_GLES)
GLenum
_cogl_buffer_hints_to_gl_enum (CoglBufferUsageHint usage_hint,
CoglBufferUpdateHint update_hint)
{
/* usage hint is always TEXTURE for now */
if (update_hint == COGL_BUFFER_UPDATE_HINT_STATIC)
return GL_STATIC_DRAW;
return GL_DYNAMIC_DRAW;
}
#else
GLenum
_cogl_buffer_hints_to_gl_enum (CoglBufferUsageHint usage_hint,
CoglBufferUpdateHint update_hint)
{
/* usage hint is always TEXTURE for now */
if (update_hint == COGL_BUFFER_UPDATE_HINT_STATIC)
return GL_STATIC_DRAW;
if (update_hint == COGL_BUFFER_UPDATE_HINT_DYNAMIC)
return GL_DYNAMIC_DRAW;
if (update_hint == COGL_BUFFER_UPDATE_HINT_STREAM)
return GL_STREAM_DRAW;
return GL_STATIC_DRAW;
}
#endif
void *
_cogl_buffer_bind (CoglBuffer *buffer, CoglBufferBindTarget target)
{
_COGL_GET_CONTEXT (ctx, NULL);
g_return_val_if_fail (buffer != NULL, NULL);
/* Don't allow binding the buffer to multiple targets at the same time */
g_return_val_if_fail (ctx->current_buffer[buffer->last_target] != buffer,
NULL);
/* Don't allow nesting binds to the same target */
g_return_val_if_fail (ctx->current_buffer[target] == NULL, NULL);
buffer->last_target = target;
ctx->current_buffer[target] = buffer;
if (buffer->flags & COGL_BUFFER_FLAG_BUFFER_OBJECT)
{
GLenum gl_target = convert_bind_target_to_gl_target (buffer->last_target);
GE( glBindBuffer (gl_target, buffer->gl_handle) );
return NULL;
}
else
return buffer->data;
}
void
_cogl_buffer_unbind (CoglBuffer *buffer)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
g_return_if_fail (buffer != NULL);
/* the unbind should pair up with a previous bind */
g_return_if_fail (ctx->current_buffer[buffer->last_target] == buffer);
if (buffer->flags & COGL_BUFFER_FLAG_BUFFER_OBJECT)
{
GLenum gl_target = convert_bind_target_to_gl_target (buffer->last_target);
GE( glBindBuffer (gl_target, 0) );
}
ctx->current_buffer[buffer->last_target] = NULL;
}
unsigned int
cogl_buffer_get_size (CoglBuffer *buffer)
{
if (!cogl_is_buffer (buffer))
return 0;
return COGL_BUFFER (buffer)->size;
}
void
cogl_buffer_set_update_hint (CoglBuffer *buffer,
CoglBufferUpdateHint hint)
{
if (!cogl_is_buffer (buffer))
return;
if (G_UNLIKELY (hint > COGL_BUFFER_UPDATE_HINT_STREAM))
hint = COGL_BUFFER_UPDATE_HINT_STATIC;
buffer->update_hint = hint;
}
CoglBufferUpdateHint
cogl_buffer_get_update_hint (CoglBuffer *buffer)
{
if (!cogl_is_buffer (buffer))
return FALSE;
return buffer->update_hint;
}
static void
warn_about_midscene_changes (void)
{
static gboolean seen = FALSE;
if (!seen)
{
g_warning ("Mid-scene modification of buffers has "
"undefined results\n");
seen = TRUE;
}
}
void *
cogl_buffer_map (CoglBuffer *buffer,
CoglBufferAccess access,
CoglBufferMapHint hints)
{
g_return_val_if_fail (cogl_is_buffer (buffer), NULL);
if (G_UNLIKELY (buffer->immutable_ref))
warn_about_midscene_changes ();
if (buffer->flags & COGL_BUFFER_FLAG_MAPPED)
return buffer->data;
buffer->data = buffer->vtable.map (buffer, access, hints);
return buffer->data;
}
void
cogl_buffer_unmap (CoglBuffer *buffer)
{
if (!cogl_is_buffer (buffer))
return;
if (!(buffer->flags & COGL_BUFFER_FLAG_MAPPED))
return;
buffer->vtable.unmap (buffer);
}
void *
_cogl_buffer_map_for_fill_or_fallback (CoglBuffer *buffer)
{
void *ret;
_COGL_GET_CONTEXT (ctx, NULL);
g_return_val_if_fail (!ctx->buffer_map_fallback_in_use, NULL);
ctx->buffer_map_fallback_in_use = TRUE;
ret = cogl_buffer_map (buffer,
COGL_BUFFER_ACCESS_WRITE,
COGL_BUFFER_MAP_HINT_DISCARD);
if (ret)
return ret;
else
{
/* If the map fails then we'll use a temporary buffer to fill
the data and then upload it using cogl_buffer_set_data when
the buffer is unmapped. The temporary buffer is shared to
avoid reallocating it every time */
g_byte_array_set_size (ctx->buffer_map_fallback_array, buffer->size);
buffer->flags |= COGL_BUFFER_FLAG_MAPPED_FALLBACK;
return ctx->buffer_map_fallback_array->data;
}
}
void
_cogl_buffer_unmap_for_fill_or_fallback (CoglBuffer *buffer)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
g_return_if_fail (ctx->buffer_map_fallback_in_use);
ctx->buffer_map_fallback_in_use = FALSE;
if ((buffer->flags & COGL_BUFFER_FLAG_MAPPED_FALLBACK))
{
cogl_buffer_set_data (buffer, 0,
ctx->buffer_map_fallback_array->data,
buffer->size);
buffer->flags &= ~COGL_BUFFER_FLAG_MAPPED_FALLBACK;
}
else
cogl_buffer_unmap (buffer);
}
gboolean
cogl_buffer_set_data (CoglBuffer *buffer,
gsize offset,
const void *data,
gsize size)
{
g_return_val_if_fail (cogl_is_buffer (buffer), FALSE);
g_return_val_if_fail ((offset + size) <= buffer->size, FALSE);
if (G_UNLIKELY (buffer->immutable_ref))
warn_about_midscene_changes ();
return buffer->vtable.set_data (buffer, offset, data, size);
}
CoglBuffer *
_cogl_buffer_immutable_ref (CoglBuffer *buffer)
{
g_return_val_if_fail (cogl_is_buffer (buffer), NULL);
buffer->immutable_ref++;
return buffer;
}
void
_cogl_buffer_immutable_unref (CoglBuffer *buffer)
{
g_return_if_fail (cogl_is_buffer (buffer));
g_return_if_fail (buffer->immutable_ref > 0);
buffer->immutable_ref--;
}

242
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View File

@ -1,242 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C)2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Damien Lespiau <damien.lespiau@intel.com>
* Robert Bragg <robert@linux.intel.com>
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_BUFFER_H__
#define __COGL_BUFFER_H__
#include <glib.h>
#include <cogl/cogl-types.h>
G_BEGIN_DECLS
/**
* SECTION:cogl-buffer
* @short_description: Buffer creation and manipulation
* @stability: Unstable
*
* COGL allows the creation and the manipulation of buffers. If the underlying
* OpenGL implementation allows it, COGL will use Pixel Buffer Objects.
*/
/* All of the cogl-buffer API is currently experimental so we suffix
* the actual symbols with _EXP so if somone is monitoring for ABI
* changes it will hopefully be clearer to them what's going on if any
* of the symbols dissapear at a later date.
*/
#define cogl_is_buffer cogl_is_buffer_EXP
#define cogl_buffer_get_size cogl_buffer_get_size_EXP
#define cogl_buffer_set_usage_hint cogl_buffer_set_usage_hint_EXP
#define cogl_buffer_get_usage_hint cogl_buffer_get_usage_hint_EXP
#define cogl_buffer_set_update_hint cogl_buffer_set_update_hint_EXP
#define cogl_buffer_get_update_hint cogl_buffer_get_update_hint_EXP
#define cogl_buffer_map cogl_buffer_map_EXP
#define cogl_buffer_unmap cogl_buffer_unmap_EXP
#define cogl_buffer_set_data cogl_buffer_set_data_EXP
typedef struct _CoglBuffer CoglBuffer;
/**
* cogl_is_buffer:
* @buffer: a buffer object
*
* Checks whether @buffer is a buffer object.
*
* Return value: %TRUE if the handle is a CoglBuffer, and %FALSE otherwise
*
* Since: 1.2
* Stability: Unstable
*/
gboolean
cogl_is_buffer (const void *object);
/**
* cogl_buffer_get_size:
* @buffer: a buffer object
*
* Retrieves the size of buffer
*
* Return value: the size of the buffer in bytes
*
* Since: 1.2
* Stability: Unstable
*/
unsigned int
cogl_buffer_get_size (CoglBuffer *buffer);
/**
* CoglBufferUpdateHint:
* @COGL_BUFFER_UPDATE_HINT_STATIC: the buffer will not change over time
* @COGL_BUFFER_UPDATE_HINT_DYNAMIC: the buffer will change from time to time
* @COGL_BUFFER_UPDATE_HINT_STREAM: the buffer will be used once or a couple of
* times
*
* The update hint on a buffer allows the user to give some detail on how often
* the buffer data is going to be updated.
*
* Since: 1.2
* Stability: Unstable
*/
typedef enum { /*< prefix=COGL_BUFFER_UPDATE_HINT >*/
COGL_BUFFER_UPDATE_HINT_STATIC,
COGL_BUFFER_UPDATE_HINT_DYNAMIC,
COGL_BUFFER_UPDATE_HINT_STREAM
} CoglBufferUpdateHint;
/**
* cogl_buffer_set_update_hint:
* @buffer: a buffer object
* @hint: the new hint
*
* Sets the update hint on a buffer. See #CoglBufferUpdateHint for a description
* of the available hints.
*
* Since: 1.2
* Stability: Unstable
*/
void
cogl_buffer_set_update_hint (CoglBuffer *buffer,
CoglBufferUpdateHint hint);
/**
* cogl_buffer_get_update_hint:
* @buffer: a buffer object
*
* Retrieves the update hints set using cogl_buffer_set_update_hint()
*
* Return value: the #CoglBufferUpdateHint currently used by the buffer
*
* Since: 1.2
* Stability: Unstable
*/
CoglBufferUpdateHint
cogl_buffer_get_update_hint (CoglBuffer *buffer);
/**
* CoglBufferAccess:
* @COGL_BUFFER_ACCESS_READ: the buffer will be read
* @COGL_BUFFER_ACCESS_WRITE: the buffer will written to
* @COGL_BUFFER_ACCESS_READ_WRITE: the buffer will be used for both reading and
* writing
*
* The access hints for cogl_buffer_set_update_hint()
*
* Since: 1.2
* Stability: Unstable
*/
typedef enum { /*< prefix=COGL_BUFFER_ACCESS >*/
COGL_BUFFER_ACCESS_READ = 1 << 0,
COGL_BUFFER_ACCESS_WRITE = 1 << 1,
COGL_BUFFER_ACCESS_READ_WRITE = COGL_BUFFER_ACCESS_READ | COGL_BUFFER_ACCESS_WRITE
} CoglBufferAccess;
/**
* CoglBufferMapHint:
* @COGL_BUFFER_MAP_HINT_DISCARD: Tells Cogl that you plan to replace
* all the buffer's contents.
*
* Hints to Cogl about how you are planning to modify the data once it
* is mapped.
*
* Since: 1.4
* Stability: Unstable
*/
typedef enum { /*< prefix=COGL_BUFFER_MAP_HINT >*/
COGL_BUFFER_MAP_HINT_DISCARD = 1 << 0
} CoglBufferMapHint;
/**
* cogl_buffer_map:
* @buffer: a buffer object
* @access: how the mapped buffer will be used by the application
* @hints: A mask of #CoglBufferMapHint<!-- -->s that tell Cogl how
* the data will be modified once mapped.
*
* Maps the buffer into the application address space for direct access.
*
* It is strongly recommended that you pass
* %COGL_BUFFER_MAP_HINT_DISCARD as a hint if you are going to replace
* all the buffer's data. This way if the buffer is currently being
* used by the GPU then the driver won't have to stall the CPU and
* wait for the hardware to finish because it can instead allocate a
* new buffer to map.
*
* The behaviour is undefined if you access the buffer in a way
* conflicting with the @access mask you pass. It is also an error to
* release your last reference while the buffer is mapped.
*
* Return value: A pointer to the mapped memory or %NULL is the call fails
*
* Since: 1.2
* Stability: Unstable
*/
void *
cogl_buffer_map (CoglBuffer *buffer,
CoglBufferAccess access,
CoglBufferMapHint hints);
/**
* cogl_buffer_unmap:
* @buffer: a buffer object
*
* Unmaps a buffer previously mapped by cogl_buffer_map().
*
* Since: 1.2
* Stability: Unstable
*/
void
cogl_buffer_unmap (CoglBuffer *buffer);
/**
* cogl_buffer_set_data:
* @buffer: a buffer object
* @offset: destination offset (in bytes) in the buffer
* @data: a pointer to the data to be copied into the buffer
* @size: number of bytes to copy
*
* Updates part of the buffer with new data from @data. Where to put this new
* data is controlled by @offset and @offset + @data should be less than the
* buffer size.
*
* Return value: %TRUE is the operation succeeded, %FALSE otherwise
*
* Since: 1.2
* Stability: Unstable
*/
gboolean
cogl_buffer_set_data (CoglBuffer *buffer,
gsize offset,
const void *data,
gsize size);
G_END_DECLS
#endif /* __COGL_BUFFER_H__ */

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@ -1,748 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <math.h>
#include <glib.h>
#include "cogl.h"
#include "cogl-clip-stack.h"
#include "cogl-primitives.h"
#include "cogl-context-private.h"
#include "cogl-internal.h"
#include "cogl-framebuffer-private.h"
#include "cogl-journal-private.h"
#include "cogl-util.h"
#include "cogl-path-private.h"
#include "cogl-matrix-private.h"
#include "cogl-primitives-private.h"
#ifndef GL_CLIP_PLANE0
#define GL_CLIP_PLANE0 0x3000
#define GL_CLIP_PLANE1 0x3001
#define GL_CLIP_PLANE2 0x3002
#define GL_CLIP_PLANE3 0x3003
#define GL_CLIP_PLANE4 0x3004
#define GL_CLIP_PLANE5 0x3005
#endif
static void
project_vertex (const CoglMatrix *modelview_projection,
float *vertex)
{
int i;
cogl_matrix_transform_point (modelview_projection,
&vertex[0], &vertex[1],
&vertex[2], &vertex[3]);
/* Convert from homogenized coordinates */
for (i = 0; i < 4; i++)
vertex[i] /= vertex[3];
}
static void
set_clip_plane (GLint plane_num,
const float *vertex_a,
const float *vertex_b)
{
#if defined (HAVE_COGL_GLES2) || defined (HAVE_COGL_GLES)
GLfloat plane[4];
#else
GLdouble plane[4];
#endif
GLfloat angle;
CoglFramebuffer *framebuffer = cogl_get_draw_framebuffer ();
CoglMatrixStack *modelview_stack =
_cogl_framebuffer_get_modelview_stack (framebuffer);
CoglMatrixStack *projection_stack =
_cogl_framebuffer_get_projection_stack (framebuffer);
CoglMatrix inverse_projection;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
_cogl_matrix_stack_get_inverse (projection_stack, &inverse_projection);
/* Calculate the angle between the axes and the line crossing the
two points */
angle = atan2f (vertex_b[1] - vertex_a[1],
vertex_b[0] - vertex_a[0]) * (180.0/G_PI);
_cogl_matrix_stack_push (modelview_stack);
/* Load the inverse of the projection matrix so we can specify the plane
* in screen coordinates */
_cogl_matrix_stack_set (modelview_stack, &inverse_projection);
/* Rotate about point a */
_cogl_matrix_stack_translate (modelview_stack,
vertex_a[0], vertex_a[1], vertex_a[2]);
/* Rotate the plane by the calculated angle so that it will connect
the two points */
_cogl_matrix_stack_rotate (modelview_stack, angle, 0.0f, 0.0f, 1.0f);
_cogl_matrix_stack_translate (modelview_stack,
-vertex_a[0], -vertex_a[1], -vertex_a[2]);
_cogl_matrix_stack_flush_to_gl (modelview_stack, COGL_MATRIX_MODELVIEW);
plane[0] = 0;
plane[1] = -1.0;
plane[2] = 0;
plane[3] = vertex_a[1];
#if defined (HAVE_COGL_GLES2)
g_assert_not_reached ();
#elif defined (HAVE_COGL_GLES)
GE( glClipPlanef (plane_num, plane) );
#else
GE( glClipPlane (plane_num, plane) );
#endif
_cogl_matrix_stack_pop (modelview_stack);
}
static void
set_clip_planes (float x_1,
float y_1,
float x_2,
float y_2)
{
CoglFramebuffer *framebuffer = cogl_get_draw_framebuffer ();
CoglMatrixStack *modelview_stack =
_cogl_framebuffer_get_modelview_stack (framebuffer);
CoglMatrix modelview_matrix;
CoglMatrixStack *projection_stack =
_cogl_framebuffer_get_projection_stack (framebuffer);
CoglMatrix projection_matrix;
CoglMatrix modelview_projection;
float signed_area;
float vertex_tl[4] = { x_1, y_1, 0, 1.0 };
float vertex_tr[4] = { x_2, y_1, 0, 1.0 };
float vertex_bl[4] = { x_1, y_2, 0, 1.0 };
float vertex_br[4] = { x_2, y_2, 0, 1.0 };
_cogl_matrix_stack_get (projection_stack, &projection_matrix);
_cogl_matrix_stack_get (modelview_stack, &modelview_matrix);
cogl_matrix_multiply (&modelview_projection,
&projection_matrix,
&modelview_matrix);
project_vertex (&modelview_projection, vertex_tl);
project_vertex (&modelview_projection, vertex_tr);
project_vertex (&modelview_projection, vertex_bl);
project_vertex (&modelview_projection, vertex_br);
/* Calculate the signed area of the polygon formed by the four
vertices so that we can know its orientation */
signed_area = (vertex_tl[0] * (vertex_tr[1] - vertex_bl[1])
+ vertex_tr[0] * (vertex_br[1] - vertex_tl[1])
+ vertex_br[0] * (vertex_bl[1] - vertex_tr[1])
+ vertex_bl[0] * (vertex_tl[1] - vertex_br[1]));
/* Set the clip planes to form lines between all of the vertices
using the same orientation as we calculated */
if (signed_area > 0.0f)
{
/* counter-clockwise */
set_clip_plane (GL_CLIP_PLANE0, vertex_tl, vertex_bl);
set_clip_plane (GL_CLIP_PLANE1, vertex_bl, vertex_br);
set_clip_plane (GL_CLIP_PLANE2, vertex_br, vertex_tr);
set_clip_plane (GL_CLIP_PLANE3, vertex_tr, vertex_tl);
}
else
{
/* clockwise */
set_clip_plane (GL_CLIP_PLANE0, vertex_tl, vertex_tr);
set_clip_plane (GL_CLIP_PLANE1, vertex_tr, vertex_br);
set_clip_plane (GL_CLIP_PLANE2, vertex_br, vertex_bl);
set_clip_plane (GL_CLIP_PLANE3, vertex_bl, vertex_tl);
}
}
static void
add_stencil_clip_rectangle (float x_1,
float y_1,
float x_2,
float y_2,
gboolean first)
{
CoglFramebuffer *framebuffer = cogl_get_draw_framebuffer ();
CoglMatrixStack *modelview_stack =
_cogl_framebuffer_get_modelview_stack (framebuffer);
CoglMatrixStack *projection_stack =
_cogl_framebuffer_get_projection_stack (framebuffer);
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
/* temporarily swap in our special stenciling pipeline */
cogl_push_source (ctx->stencil_pipeline);
/* This can be called from the journal code which doesn't flush
the matrix stacks between calls so we need to ensure they're
flushed now */
_cogl_matrix_stack_flush_to_gl (modelview_stack,
COGL_MATRIX_MODELVIEW);
_cogl_matrix_stack_flush_to_gl (projection_stack,
COGL_MATRIX_PROJECTION);
if (first)
{
GE( glEnable (GL_STENCIL_TEST) );
/* Initially disallow everything */
GE( glClearStencil (0) );
GE( glClear (GL_STENCIL_BUFFER_BIT) );
/* Punch out a hole to allow the rectangle */
GE( glStencilFunc (GL_NEVER, 0x1, 0x1) );
GE( glStencilOp (GL_REPLACE, GL_REPLACE, GL_REPLACE) );
_cogl_rectangle_immediate (x_1, y_1, x_2, y_2);
}
else
{
/* Add one to every pixel of the stencil buffer in the
rectangle */
GE( glStencilFunc (GL_NEVER, 0x1, 0x3) );
GE( glStencilOp (GL_INCR, GL_INCR, GL_INCR) );
_cogl_rectangle_immediate (x_1, y_1, x_2, y_2);
/* Subtract one from all pixels in the stencil buffer so that
only pixels where both the original stencil buffer and the
rectangle are set will be valid */
GE( glStencilOp (GL_DECR, GL_DECR, GL_DECR) );
_cogl_matrix_stack_push (projection_stack);
_cogl_matrix_stack_load_identity (projection_stack);
_cogl_matrix_stack_push (modelview_stack);
_cogl_matrix_stack_load_identity (modelview_stack);
_cogl_matrix_stack_flush_to_gl (modelview_stack,
COGL_MATRIX_MODELVIEW);
_cogl_matrix_stack_flush_to_gl (projection_stack,
COGL_MATRIX_PROJECTION);
_cogl_rectangle_immediate (-1.0, -1.0, 1.0, 1.0);
_cogl_matrix_stack_pop (modelview_stack);
_cogl_matrix_stack_pop (projection_stack);
}
/* Restore the stencil mode */
GE( glStencilFunc (GL_EQUAL, 0x1, 0x1) );
GE( glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP) );
/* restore the original source pipeline */
cogl_pop_source ();
}
static void
disable_stencil_buffer (void)
{
GE( glDisable (GL_STENCIL_TEST) );
}
static void
enable_clip_planes (void)
{
GE( glEnable (GL_CLIP_PLANE0) );
GE( glEnable (GL_CLIP_PLANE1) );
GE( glEnable (GL_CLIP_PLANE2) );
GE( glEnable (GL_CLIP_PLANE3) );
}
static void
disable_clip_planes (void)
{
GE( glDisable (GL_CLIP_PLANE3) );
GE( glDisable (GL_CLIP_PLANE2) );
GE( glDisable (GL_CLIP_PLANE1) );
GE( glDisable (GL_CLIP_PLANE0) );
}
static gpointer
_cogl_clip_stack_push_entry (CoglClipStack *clip_stack,
size_t size,
CoglClipStackType type)
{
CoglClipStack *entry = g_slice_alloc (size);
/* The new entry starts with a ref count of 1 because the stack
holds a reference to it as it is the top entry */
entry->ref_count = 1;
entry->type = type;
entry->parent = clip_stack;
/* We don't need to take a reference to the parent from the entry
because the we are stealing the ref in the new stack top */
return entry;
}
/* Sets the window-space bounds of the entry based on the projected
coordinates of the given rectangle */
static void
_cogl_clip_stack_entry_set_bounds (CoglClipStack *entry,
float x_1,
float y_1,
float x_2,
float y_2,
const CoglMatrix *modelview)
{
CoglMatrix projection;
float viewport[4];
float verts[4 * 2] = { x_1, y_1, x_2, y_1, x_2, y_2, x_1, y_2 };
float min_x = G_MAXFLOAT, min_y = G_MAXFLOAT;
float max_x = -G_MAXFLOAT, max_y = -G_MAXFLOAT;
int i;
cogl_get_projection_matrix (&projection);
cogl_get_viewport (viewport);
for (i = 0; i < 4; i++)
{
float *v = verts + i * 2;
/* Project the coordinates to window space coordinates */
_cogl_transform_point (modelview, &projection, viewport, v, v + 1);
if (v[0] > max_x)
max_x = v[0];
if (v[0] < min_x)
min_x = v[0];
if (v[1] > max_y)
max_y = v[1];
if (v[1] < min_y)
min_y = v[1];
}
entry->bounds_x0 = floorf (min_x);
entry->bounds_x1 = ceilf (max_x);
entry->bounds_y0 = floorf (min_y);
entry->bounds_y1 = ceilf (max_y);
}
CoglClipStack *
_cogl_clip_stack_push_window_rectangle (CoglClipStack *stack,
int x_offset,
int y_offset,
int width,
int height)
{
CoglClipStack *entry;
entry = _cogl_clip_stack_push_entry (stack,
sizeof (CoglClipStackWindowRect),
COGL_CLIP_STACK_WINDOW_RECT);
entry->bounds_x0 = x_offset;
entry->bounds_x1 = x_offset + width;
entry->bounds_y0 = y_offset;
entry->bounds_y1 = y_offset + height;
return entry;
}
CoglClipStack *
_cogl_clip_stack_push_rectangle (CoglClipStack *stack,
float x_1,
float y_1,
float x_2,
float y_2,
const CoglMatrix *modelview_matrix)
{
CoglClipStackRect *entry;
CoglMatrix matrix_p;
float v[4];
/* Make a new entry */
entry = _cogl_clip_stack_push_entry (stack,
sizeof (CoglClipStackRect),
COGL_CLIP_STACK_RECT);
entry->x0 = x_1;
entry->y0 = y_1;
entry->x1 = x_2;
entry->y1 = y_2;
entry->matrix = *modelview_matrix;
/* If the modelview meets these constraints then a transformed rectangle
* should still be a rectangle when it reaches screen coordinates.
*
* FIXME: we are are making certain assumptions about the projection
* matrix a.t.m and should really be looking at the combined modelview
* and projection matrix.
* FIXME: we don't consider rotations that are a multiple of 90 degrees
* which could be quite common.
*/
if (modelview_matrix->xy != 0 || modelview_matrix->xz != 0 ||
modelview_matrix->yx != 0 || modelview_matrix->yz != 0 ||
modelview_matrix->zx != 0 || modelview_matrix->zy != 0)
{
entry->can_be_scissor = FALSE;
_cogl_clip_stack_entry_set_bounds ((CoglClipStack *) entry,
x_1, y_1, x_2, y_2, modelview_matrix);
}
else
{
CoglClipStack *base_entry = (CoglClipStack *) entry;
cogl_get_projection_matrix (&matrix_p);
cogl_get_viewport (v);
_cogl_transform_point (modelview_matrix, &matrix_p, v, &x_1, &y_1);
_cogl_transform_point (modelview_matrix, &matrix_p, v, &x_2, &y_2);
/* Consider that the modelview matrix may flip the rectangle
* along the x or y axis... */
#define SWAP(A,B) do { float tmp = B; B = A; A = tmp; } while (0)
if (x_1 > x_2)
SWAP (x_1, x_2);
if (y_1 > y_2)
SWAP (y_1, y_2);
#undef SWAP
base_entry->bounds_x0 = COGL_UTIL_NEARBYINT (x_1);
base_entry->bounds_y0 = COGL_UTIL_NEARBYINT (y_1);
base_entry->bounds_x1 = COGL_UTIL_NEARBYINT (x_2);
base_entry->bounds_y1 = COGL_UTIL_NEARBYINT (y_2);
entry->can_be_scissor = TRUE;
}
return (CoglClipStack *) entry;
}
CoglClipStack *
_cogl_clip_stack_push_from_path (CoglClipStack *stack,
CoglPath *path,
const CoglMatrix *modelview_matrix)
{
float x_1, y_1, x_2, y_2;
_cogl_path_get_bounds (path, &x_1, &y_1, &x_2, &y_2);
/* If the path is a simple rectangle then we can divert to pushing a
rectangle clip instead which usually won't involve the stencil
buffer */
if (_cogl_path_is_rectangle (path))
return _cogl_clip_stack_push_rectangle (stack,
x_1, y_1,
x_2, y_2,
modelview_matrix);
else
{
CoglClipStackPath *entry;
entry = _cogl_clip_stack_push_entry (stack,
sizeof (CoglClipStackPath),
COGL_CLIP_STACK_PATH);
entry->path = cogl_path_copy (path);
entry->matrix = *modelview_matrix;
_cogl_clip_stack_entry_set_bounds ((CoglClipStack *) entry,
x_1, y_1, x_2, y_2, modelview_matrix);
return (CoglClipStack *) entry;
}
}
CoglClipStack *
_cogl_clip_stack_ref (CoglClipStack *entry)
{
/* A NULL pointer is considered a valid stack so we should accept
that as an argument */
if (entry)
entry->ref_count++;
return entry;
}
void
_cogl_clip_stack_unref (CoglClipStack *entry)
{
/* Unref all of the entries until we hit the root of the list or the
entry still has a remaining reference */
while (entry && --entry->ref_count <= 0)
{
CoglClipStack *parent = entry->parent;
switch (entry->type)
{
case COGL_CLIP_STACK_RECT:
g_slice_free1 (sizeof (CoglClipStackRect), entry);
break;
case COGL_CLIP_STACK_WINDOW_RECT:
g_slice_free1 (sizeof (CoglClipStackWindowRect), entry);
break;
case COGL_CLIP_STACK_PATH:
cogl_object_unref (((CoglClipStackPath *) entry)->path);
g_slice_free1 (sizeof (CoglClipStackPath), entry);
break;
default:
g_assert_not_reached ();
}
entry = parent;
}
}
CoglClipStack *
_cogl_clip_stack_pop (CoglClipStack *stack)
{
CoglClipStack *new_top;
g_return_val_if_fail (stack != NULL, NULL);
/* To pop we are moving the top of the stack to the old top's parent
node. The stack always needs to have a reference to the top entry
so we must take a reference to the new top. The stack would have
previously had a reference to the old top so we need to decrease
the ref count on that. We need to ref the new head first in case
this stack was the only thing referencing the old top. In that
case the call to _cogl_clip_stack_entry_unref will unref the
parent. */
new_top = stack->parent;
_cogl_clip_stack_ref (new_top);
_cogl_clip_stack_unref (stack);
return new_top;
}
void
_cogl_clip_stack_get_bounds (CoglClipStack *stack,
int *scissor_x0,
int *scissor_y0,
int *scissor_x1,
int *scissor_y1)
{
CoglClipStack *entry;
*scissor_x0 = 0;
*scissor_y0 = 0;
*scissor_x1 = G_MAXINT;
*scissor_y1 = G_MAXINT;
for (entry = stack; entry; entry = entry->parent)
{
/* Get the intersection of the current scissor and the bounding
box of this clip */
*scissor_x0 = MAX (*scissor_x0, entry->bounds_x0);
*scissor_y0 = MAX (*scissor_y0, entry->bounds_y0);
*scissor_x1 = MIN (*scissor_x1, entry->bounds_x1);
*scissor_y1 = MIN (*scissor_y1, entry->bounds_y1);
}
}
void
_cogl_clip_stack_flush (CoglClipStack *stack)
{
int has_clip_planes;
gboolean using_clip_planes = FALSE;
gboolean using_stencil_buffer = FALSE;
int scissor_x0;
int scissor_y0;
int scissor_x1;
int scissor_y1;
CoglMatrixStack *modelview_stack;
CoglClipStack *entry;
int scissor_y_start;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
/* If we have already flushed this state then we don't need to do
anything */
if (ctx->current_clip_stack_valid)
{
if (ctx->current_clip_stack == stack)
return;
_cogl_clip_stack_unref (ctx->current_clip_stack);
}
ctx->current_clip_stack_valid = TRUE;
ctx->current_clip_stack = _cogl_clip_stack_ref (stack);
modelview_stack =
_cogl_framebuffer_get_modelview_stack (cogl_get_draw_framebuffer ());
has_clip_planes = cogl_features_available (COGL_FEATURE_FOUR_CLIP_PLANES);
if (has_clip_planes)
disable_clip_planes ();
disable_stencil_buffer ();
/* If the stack is empty then there's nothing else to do */
if (stack == NULL)
{
COGL_NOTE (CLIPPING, "Flushed empty clip stack");
ctx->current_clip_stack_uses_stencil = FALSE;
GE (glDisable (GL_SCISSOR_TEST));
return;
}
/* Calculate the scissor rect first so that if we eventually have to
clear the stencil buffer then the clear will be clipped to the
intersection of all of the bounding boxes. This saves having to
clear the whole stencil buffer */
_cogl_clip_stack_get_bounds (stack,
&scissor_x0, &scissor_y0,
&scissor_x1, &scissor_y1);
/* Enable scissoring as soon as possible */
if (scissor_x0 >= scissor_x1 || scissor_y0 >= scissor_y1)
scissor_x0 = scissor_y0 = scissor_x1 = scissor_y1 = scissor_y_start = 0;
else
{
CoglFramebuffer *framebuffer = cogl_get_draw_framebuffer ();
/* We store the entry coordinates in Cogl coordinate space
* but OpenGL requires the window origin to be the bottom
* left so we may need to convert the incoming coordinates.
*
* NB: Cogl forces all offscreen rendering to be done upside
* down so in this case no conversion is needed.
*/
if (cogl_is_offscreen (framebuffer))
scissor_y_start = scissor_y0;
else
{
int framebuffer_height =
cogl_framebuffer_get_height (framebuffer);
scissor_y_start = framebuffer_height - scissor_y1;
}
}
COGL_NOTE (CLIPPING, "Flushing scissor to (%i, %i, %i, %i)",
scissor_x0, scissor_y0,
scissor_x1, scissor_y1);
GE (glEnable (GL_SCISSOR_TEST));
GE (glScissor (scissor_x0, scissor_y_start,
scissor_x1 - scissor_x0,
scissor_y1 - scissor_y0));
/* Add all of the entries. This will end up adding them in the
reverse order that they were specified but as all of the clips
are intersecting it should work out the same regardless of the
order */
for (entry = stack; entry; entry = entry->parent)
{
if (entry->type == COGL_CLIP_STACK_PATH)
{
CoglClipStackPath *path_entry = (CoglClipStackPath *) entry;
COGL_NOTE (CLIPPING, "Adding stencil clip for path");
_cogl_matrix_stack_push (modelview_stack);
_cogl_matrix_stack_set (modelview_stack, &path_entry->matrix);
_cogl_add_path_to_stencil_buffer (path_entry->path,
using_stencil_buffer,
TRUE);
_cogl_matrix_stack_pop (modelview_stack);
using_stencil_buffer = TRUE;
}
else if (entry->type == COGL_CLIP_STACK_RECT)
{
CoglClipStackRect *rect = (CoglClipStackRect *) entry;
/* We don't need to do anything extra if the clip for this
rectangle was entirely described by its scissor bounds */
if (!rect->can_be_scissor)
{
_cogl_matrix_stack_push (modelview_stack);
_cogl_matrix_stack_set (modelview_stack, &rect->matrix);
/* If we support clip planes and we haven't already used
them then use that instead */
if (has_clip_planes)
{
COGL_NOTE (CLIPPING, "Adding clip planes clip for rectangle");
set_clip_planes (rect->x0,
rect->y0,
rect->x1,
rect->y1);
using_clip_planes = TRUE;
/* We can't use clip planes a second time */
has_clip_planes = FALSE;
}
else
{
COGL_NOTE (CLIPPING, "Adding stencil clip for rectangle");
add_stencil_clip_rectangle (rect->x0,
rect->y0,
rect->x1,
rect->y1,
!using_stencil_buffer);
using_stencil_buffer = TRUE;
}
_cogl_matrix_stack_pop (modelview_stack);
}
}
/* We don't need to do anything for window space rectangles
because their functionality is entirely implemented by the
entry bounding box */
}
/* Enabling clip planes is delayed to now so that they won't affect
setting up the stencil buffer */
if (using_clip_planes)
enable_clip_planes ();
ctx->current_clip_stack_uses_stencil = using_stencil_buffer;
}
void
_cogl_clip_stack_dirty (void)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if (ctx->current_clip_stack_valid)
{
ctx->current_clip_stack_valid = FALSE;
_cogl_clip_stack_unref (ctx->current_clip_stack);
}
}

192
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@ -1,192 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_CLIP_STACK_H
#define __COGL_CLIP_STACK_H
#include "cogl2-path.h"
#include "cogl-matrix.h"
/* The clip stack works like a GSList where only a pointer to the top
of the stack is stored. The empty clip stack is represented simply
by the NULL pointer. When an entry is added to or removed from the
stack the new top of the stack is returned. When an entry is pushed
a new clip stack entry is created which effectively takes ownership
of the reference on the old entry. Therefore unrefing the top entry
effectively loses ownership of all entries in the stack */
typedef struct _CoglClipStack CoglClipStack;
typedef struct _CoglClipStackRect CoglClipStackRect;
typedef struct _CoglClipStackWindowRect CoglClipStackWindowRect;
typedef struct _CoglClipStackPath CoglClipStackPath;
typedef enum
{
COGL_CLIP_STACK_RECT,
COGL_CLIP_STACK_WINDOW_RECT,
COGL_CLIP_STACK_PATH
} CoglClipStackType;
/* A clip stack consists a list of entries. Each entry has a reference
* count and a link to its parent node. The child takes a reference on
* the parent and the CoglClipStack holds a reference to the top of
* the stack. There are no links back from the parent to the
* children. This allows stacks that have common ancestry to share the
* entries.
*
* For example, the following sequence of operations would generate
* the tree below:
*
* CoglClipStack *stack_a = NULL;
* stack_a = _cogl_clip_stack_push_rectangle (stack_a, ...);
* stack_a = _cogl_clip_stack_push_rectangle (stack_a, ...);
* stack_a = _cogl_clip_stack_push_from_path (stack_a, ...);
* CoglClipStack *stack_b = NULL;
* stack_b = cogl_clip_stack_push_window_rectangle (stack_b, ...);
*
* stack_a
* \ holds a ref to
* +-----------+
* | path node |
* |ref count 1|
* +-----------+
* \
* +-----------+ +-----------+
* both tops hold | rect node | | rect node |
* a ref to the |ref count 2|--|ref count 1|
* same rect node +-----------+ +-----------+
* /
* +-----------+
* | win. rect |
* |ref count 1|
* +-----------+
* / holds a ref to
* stack_b
*
*/
struct _CoglClipStack
{
CoglClipStackType type;
/* This will be null if there is no parent. If it is not null then
this node must be holding a reference to the parent */
CoglClipStack *parent;
/* All clip entries have a window-space bounding box which we can
use to calculate a scissor. The scissor limits the clip so that
we don't need to do a full stencil clear if the stencil buffer is
needed. This is stored in Cogl's coordinate space (ie, 0,0 is the
top left) */
int bounds_x0;
int bounds_y0;
int bounds_x1;
int bounds_y1;
unsigned int ref_count;
};
struct _CoglClipStackRect
{
CoglClipStack _parent_data;
/* The rectangle for this clip */
float x0;
float y0;
float x1;
float y1;
/* If this is true then the clip for this rectangle is entirely
described by the scissor bounds. This implies that the rectangle
is screen aligned and we don't need to use the stencil buffer to
set the clip. We keep the entry as a rect entry rather than a
window rect entry so that it will be easier to detect if the
modelview matrix is that same as when a rectangle is added to the
journal. In that case we can use the original clip coordinates
and modify the rectangle instead. */
gboolean can_be_scissor;
/* The matrix that was current when the clip was set */
CoglMatrix matrix;
};
struct _CoglClipStackWindowRect
{
CoglClipStack _parent_data;
/* The window rect clip doesn't need any specific data because it
just adds to the scissor clip */
};
struct _CoglClipStackPath
{
CoglClipStack _parent_data;
/* The matrix that was current when the clip was set */
CoglMatrix matrix;
CoglPath *path;
};
CoglClipStack *
_cogl_clip_stack_push_window_rectangle (CoglClipStack *stack,
int x_offset,
int y_offset,
int width,
int height);
CoglClipStack *
_cogl_clip_stack_push_rectangle (CoglClipStack *stack,
float x_1,
float y_1,
float x_2,
float y_2,
const CoglMatrix *modelview_matrix);
CoglClipStack *
_cogl_clip_stack_push_from_path (CoglClipStack *stack,
CoglPath *path,
const CoglMatrix *modelview_matrix);
CoglClipStack *
_cogl_clip_stack_pop (CoglClipStack *stack);
void
_cogl_clip_stack_get_bounds (CoglClipStack *stack,
int *scissor_x0,
int *scissor_y0,
int *scissor_x1,
int *scissor_y1);
void
_cogl_clip_stack_flush (CoglClipStack *stack);
CoglClipStack *
_cogl_clip_stack_ref (CoglClipStack *stack);
void
_cogl_clip_stack_unref (CoglClipStack *stack);
void
_cogl_clip_stack_dirty (void);
#endif /* __COGL_CLIP_STACK_H */

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@ -1,53 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_CLIP_STATE_PRIVATE_H
#define __COGL_CLIP_STATE_PRIVATE_H
#include "cogl-clip-stack.h"
typedef struct _CoglClipState CoglClipState;
struct _CoglClipState
{
/* Stack of CoglClipStacks */
GSList *stacks;
};
void
_cogl_clip_state_init (CoglClipState *state);
void
_cogl_clip_state_destroy (CoglClipState *state);
void
_cogl_clip_state_flush (CoglClipState *clip_state);
CoglClipStack *
_cogl_clip_state_get_stack (CoglClipState *clip_state);
void
_cogl_clip_state_set_stack (CoglClipState *clip_state,
CoglClipStack *clip_stack);
#endif /* __COGL_CLIP_STATE_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <math.h>
#include <glib.h>
#include "cogl.h"
#include "cogl-clip-stack.h"
#include "cogl-clip-state-private.h"
#include "cogl-context-private.h"
#include "cogl-internal.h"
#include "cogl-framebuffer-private.h"
#include "cogl-journal-private.h"
#include "cogl-util.h"
#include "cogl-matrix-private.h"
void
cogl_clip_push_window_rectangle (int x_offset,
int y_offset,
int width,
int height)
{
CoglFramebuffer *framebuffer;
CoglClipState *clip_state;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
framebuffer = cogl_get_draw_framebuffer ();
clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
clip_state->stacks->data =
_cogl_clip_stack_push_window_rectangle (clip_state->stacks->data,
x_offset, y_offset,
width, height);
}
/* XXX: This is deprecated API */
void
cogl_clip_push_window_rect (float x_offset,
float y_offset,
float width,
float height)
{
cogl_clip_push_window_rectangle (x_offset, y_offset, width, height);
}
void
cogl_clip_push_rectangle (float x_1,
float y_1,
float x_2,
float y_2)
{
CoglFramebuffer *framebuffer;
CoglClipState *clip_state;
CoglMatrix modelview_matrix;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
framebuffer = cogl_get_draw_framebuffer ();
clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
cogl_get_modelview_matrix (&modelview_matrix);
clip_state->stacks->data =
_cogl_clip_stack_push_rectangle (clip_state->stacks->data,
x_1, y_1, x_2, y_2,
&modelview_matrix);
}
/* XXX: Deprecated API */
void
cogl_clip_push (float x_offset,
float y_offset,
float width,
float height)
{
cogl_clip_push_rectangle (x_offset,
y_offset,
x_offset + width,
y_offset + height);
}
void
cogl_clip_push_from_path_preserve (void)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_clip_push_from_path (ctx->current_path);
}
#undef cogl_clip_push_from_path
void
cogl_clip_push_from_path (void)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_clip_push_from_path (ctx->current_path);
cogl_object_unref (ctx->current_path);
ctx->current_path = cogl2_path_new ();
}
static void
_cogl_clip_pop_real (CoglClipState *clip_state)
{
clip_state->stacks->data = _cogl_clip_stack_pop (clip_state->stacks->data);
}
void
cogl_clip_pop (void)
{
CoglFramebuffer *framebuffer;
CoglClipState *clip_state;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
framebuffer = cogl_get_draw_framebuffer ();
clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
_cogl_clip_pop_real (clip_state);
}
void
_cogl_clip_state_flush (CoglClipState *clip_state)
{
/* Flush the topmost stack. The clip stack code will bail out early
if this is already flushed */
_cogl_clip_stack_flush (clip_state->stacks->data);
}
/* XXX: This should never have been made public API! */
void
cogl_clip_ensure (void)
{
CoglFramebuffer *framebuffer = cogl_get_draw_framebuffer ();
CoglClipState *clip_state;
clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
/* Flushing the clip state doesn't cause the journal to be
flushed. This function may be being called by an external
application however so it makes sense to flush the journal
here */
_cogl_framebuffer_flush_journal (framebuffer);
_cogl_clip_state_flush (clip_state);
}
static void
_cogl_clip_stack_save_real (CoglClipState *clip_state)
{
clip_state->stacks = g_slist_prepend (clip_state->stacks, NULL);
}
void
cogl_clip_stack_save (void)
{
CoglFramebuffer *framebuffer;
CoglClipState *clip_state;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
framebuffer = cogl_get_draw_framebuffer ();
clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
_cogl_clip_stack_save_real (clip_state);
}
static void
_cogl_clip_stack_restore_real (CoglClipState *clip_state)
{
CoglHandle stack;
g_return_if_fail (clip_state->stacks != NULL);
stack = clip_state->stacks->data;
_cogl_clip_stack_unref (stack);
/* Revert to an old stack */
clip_state->stacks = g_slist_delete_link (clip_state->stacks,
clip_state->stacks);
}
void
cogl_clip_stack_restore (void)
{
CoglFramebuffer *framebuffer;
CoglClipState *clip_state;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
framebuffer = cogl_get_draw_framebuffer ();
clip_state = _cogl_framebuffer_get_clip_state (framebuffer);
_cogl_clip_stack_restore_real (clip_state);
}
void
_cogl_clip_state_init (CoglClipState *clip_state)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
clip_state->stacks = NULL;
/* Add an intial stack */
_cogl_clip_stack_save_real (clip_state);
}
void
_cogl_clip_state_destroy (CoglClipState *clip_state)
{
/* Destroy all of the stacks */
while (clip_state->stacks)
_cogl_clip_stack_restore_real (clip_state);
}
CoglClipStack *
_cogl_clip_state_get_stack (CoglClipState *clip_state)
{
return clip_state->stacks->data;
}
void
_cogl_clip_state_set_stack (CoglClipState *clip_state,
CoglClipStack *stack)
{
/* Replace the top of the stack of stacks */
_cogl_clip_stack_ref (stack);
_cogl_clip_stack_unref (clip_state->stacks->data);
clip_state->stacks->data = stack;
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_CLIP_STATE_H
#define __COGL_CLIP_STATE_H
#include <cogl/cogl-types.h>
G_BEGIN_DECLS
/**
* cogl_clip_push_from_path:
*
* Sets a new clipping area using the current path. The current path
* is then cleared. The clipping area is intersected with the previous
* clipping area. To restore the previous clipping area, call
* cogl_clip_pop().
*
* Since: 1.0
*/
void
cogl_clip_push_from_path (void);
G_END_DECLS
#endif /* __COGL_CLIP_STATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include "cogl.h"
#include "cogl-types.h"
#include "cogl-private.h"
#include "cogl-context-private.h"
#include "cogl-winsys-private.h"
#include "cogl-framebuffer-private.h"
gboolean
cogl_clutter_check_extension (const char *name, const char *ext)
{
return _cogl_check_extension (name, ext);
}
gboolean
cogl_clutter_winsys_has_feature (CoglWinsysFeature feature)
{
return _cogl_winsys_has_feature (feature);
}
void
cogl_onscreen_clutter_backend_set_size (int width, int height)
{
CoglFramebuffer *framebuffer;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if (!ctx->stub_winsys)
return;
framebuffer = COGL_FRAMEBUFFER (ctx->window_buffer);
_cogl_framebuffer_winsys_update_size (framebuffer, width, height);
}
#ifdef COGL_HAS_XLIB_SUPPORT
XVisualInfo *
cogl_clutter_winsys_xlib_get_visual_info (void)
{
const CoglWinsysVtable *winsys;
_COGL_GET_CONTEXT (ctx, NULL);
winsys = _cogl_context_get_winsys (ctx);
return winsys->xlib_get_visual_info ();
}
#endif

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_CLUTTER_H__
#define __COGL_CLUTTER_H__
#ifdef COGL_HAS_XLIB
#include <X11/Xutil.h>
#endif
G_BEGIN_DECLS
#define cogl_clutter_check_extension cogl_clutter_check_extension_CLUTTER
gboolean
cogl_clutter_check_extension (const char *name, const char *ext);
#define cogl_clutter_winsys_has_feature cogl_clutter_winsys_has_feature_CLUTTER
gboolean
cogl_clutter_winsys_has_feature (CoglWinsysFeature feature);
#define cogl_onscreen_clutter_backend_set_size cogl_onscreen_clutter_backend_set_size_CLUTTER
void
cogl_onscreen_clutter_backend_set_size (int width, int height);
#ifdef COGL_HAS_XLIB
#define cogl_clutter_winsys_xlib_get_visual_info cogl_clutter_winsys_xlib_get_visual_info_CLUTTER
XVisualInfo *
cogl_clutter_winsys_xlib_get_visual_info (void);
#endif
G_END_DECLS
#endif /* __COGL_CLUTTER_H__ */

45
clutter/cogl/cogl/cogl-color-private.h
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_COLOR_PRIVATE_PRIVATE_H
#define __COGL_COLOR_PRIVATE_PRIVATE_H
#include "cogl-color.h"
#include <glib.h>
/* cogl-pipeline.c wants to be able to hash CoglColor data so it needs
* the exact data size to be able to avoid reading the padding bytes.
*/
#define _COGL_COLOR_DATA_SIZE 4
void
_cogl_color_get_rgba_4ubv (const CoglColor *color,
guint8 *dest);
#endif /* __COGL_COLOR_PRIVATE_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "cogl.h"
#include "cogl-color.h"
#include "cogl-fixed.h"
CoglColor *
cogl_color_new (void)
{
return g_slice_new (CoglColor);
}
CoglColor *
cogl_color_copy (const CoglColor *color)
{
if (G_LIKELY (color))
return g_slice_dup (CoglColor, color);
return NULL;
}
void
cogl_color_free (CoglColor *color)
{
if (G_LIKELY (color))
g_slice_free (CoglColor, color);
}
void
cogl_color_init_from_4ub (CoglColor *color,
guint8 red,
guint8 green,
guint8 blue,
guint8 alpha)
{
g_return_if_fail (color != NULL);
color->red = red;
color->green = green;
color->blue = blue;
color->alpha = alpha;
}
/* XXX: deprecated, use cogl_color_init_from_4ub */
void
cogl_color_set_from_4ub (CoglColor *dest,
guint8 red,
guint8 green,
guint8 blue,
guint8 alpha)
{
cogl_color_init_from_4ub (dest, red, green, blue, alpha);
}
void
cogl_color_init_from_4f (CoglColor *color,
float red,
float green,
float blue,
float alpha)
{
g_return_if_fail (color != NULL);
color->red = (red * 255);
color->green = (green * 255);
color->blue = (blue * 255);
color->alpha = (alpha * 255);
}
/* XXX: deprecated, use cogl_color_init_from_4f */
void
cogl_color_set_from_4f (CoglColor *color,
float red,
float green,
float blue,
float alpha)
{
cogl_color_init_from_4f (color, red, green, blue, alpha);
}
void
cogl_color_init_from_4fv (CoglColor *color,
float *color_array)
{
g_return_if_fail (color != NULL);
color->red = (color_array[0] * 255);
color->green = (color_array[1] * 255);
color->blue = (color_array[2] * 255);
color->alpha = (color_array[3] * 255);
}
unsigned char
cogl_color_get_red_byte (const CoglColor *color)
{
return color->red;
}
float
cogl_color_get_red_float (const CoglColor *color)
{
return (float) color->red / 255.0;
}
float
cogl_color_get_red (const CoglColor *color)
{
return ((float) color->red / 255.0);
}
unsigned char
cogl_color_get_green_byte (const CoglColor *color)
{
return color->green;
}
float
cogl_color_get_green_float (const CoglColor *color)
{
return (float) color->green / 255.0;
}
float
cogl_color_get_green (const CoglColor *color)
{
return ((float) color->green / 255.0);
}
unsigned char
cogl_color_get_blue_byte (const CoglColor *color)
{
return color->blue;
}
float
cogl_color_get_blue_float (const CoglColor *color)
{
return (float) color->blue / 255.0;
}
float
cogl_color_get_blue (const CoglColor *color)
{
return ((float) color->blue / 255.0);
}
unsigned char
cogl_color_get_alpha_byte (const CoglColor *color)
{
return color->alpha;
}
float
cogl_color_get_alpha_float (const CoglColor *color)
{
return (float) color->alpha / 255.0;
}
float
cogl_color_get_alpha (const CoglColor *color)
{
return ((float) color->alpha / 255.0);
}
void
cogl_color_set_red_byte (CoglColor *color,
unsigned char red)
{
color->red = red;
}
void
cogl_color_set_red_float (CoglColor *color,
float red)
{
color->red = red * 255.0;
}
void
cogl_color_set_red (CoglColor *color,
float red)
{
color->red = red * 255.0;
}
void
cogl_color_set_green_byte (CoglColor *color,
unsigned char green)
{
color->green = green;
}
void
cogl_color_set_green_float (CoglColor *color,
float green)
{
color->green = green * 255.0;
}
void
cogl_color_set_green (CoglColor *color,
float green)
{
color->green = green * 255.0;
}
void
cogl_color_set_blue_byte (CoglColor *color,
unsigned char blue)
{
color->blue = blue;
}
void
cogl_color_set_blue_float (CoglColor *color,
float blue)
{
color->blue = blue * 255.0;
}
void
cogl_color_set_blue (CoglColor *color,
float blue)
{
color->blue = blue * 255.0;
}
void
cogl_color_set_alpha_byte (CoglColor *color,
unsigned char alpha)
{
color->alpha = alpha;
}
void
cogl_color_set_alpha_float (CoglColor *color,
float alpha)
{
color->alpha = alpha * 255.0;
}
void
cogl_color_set_alpha (CoglColor *color,
float alpha)
{
color->alpha = alpha * 255.0;
}
void
cogl_color_premultiply (CoglColor *color)
{
color->red = (color->red * color->alpha + 128) / 255;
color->green = (color->green * color->alpha + 128) / 255;
color->blue = (color->blue * color->alpha + 128) / 255;
}
void
cogl_color_unpremultiply (CoglColor *color)
{
if (color->alpha != 0)
{
color->red = (color->red * 255) / color->alpha;
color->green = (color->green * 255) / color->alpha;
color->blue = (color->blue * 255) / color->alpha;
}
}
gboolean
cogl_color_equal (gconstpointer v1, gconstpointer v2)
{
const guint32 *c1 = v1, *c2 = v2;
g_return_val_if_fail (v1 != NULL, FALSE);
g_return_val_if_fail (v2 != NULL, FALSE);
/* XXX: We don't compare the padding */
return *c1 == *c2 ? TRUE : FALSE;
}
void
_cogl_color_get_rgba_4ubv (const CoglColor *color,
guint8 *dest)
{
memcpy (dest, color, 4);
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
/**
* SECTION:cogl-color
* @short_description: A generic color definition
*
* #CoglColor is a simple structure holding the definition of a color such
* that it can be efficiently used by GL
*
* Since: 1.0
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_COLOR_H__
#define __COGL_COLOR_H__
#include <cogl/cogl-types.h>
G_BEGIN_DECLS
/**
* cogl_color_new:
*
* Creates a new (empty) color
*
* Return value: a newly-allocated #CoglColor. Use cogl_color_free()
* to free the allocated resources
*
* Since: 1.0
*/
CoglColor *
cogl_color_new (void);
/**
* cogl_color_copy:
* @color: the color to copy
*
* Creates a copy of @color
*
* Return value: a newly-allocated #CoglColor. Use cogl_color_free()
* to free the allocate resources
*
* Since: 1.0
*/
CoglColor *
cogl_color_copy (const CoglColor *color);
/**
* cogl_color_free:
* @color: the color to free
*
* Frees the resources allocated by cogl_color_new() and cogl_color_copy()
*
* Since: 1.0
*/
void
cogl_color_free (CoglColor *color);
/**
* cogl_color_init_from_4ub:
* @color: A pointer to a #CoglColor to initialize
* @red: value of the red channel, between 0 and 255
* @green: value of the green channel, between 0 and 255
* @blue: value of the blue channel, between 0 and 255
* @alpha: value of the alpha channel, between 0 and 255
*
* Sets the values of the passed channels into a #CoglColor.
*
* Since: 1.4
*/
void
cogl_color_init_from_4ub (CoglColor *color,
guint8 red,
guint8 green,
guint8 blue,
guint8 alpha);
/**
* cogl_color_set_from_4ub:
* @color: A pointer to a #CoglColor to initialize
* @red: value of the red channel, between 0 and 255
* @green: value of the green channel, between 0 and 255
* @blue: value of the blue channel, between 0 and 255
* @alpha: value of the alpha channel, between 0 and 255
*
* Sets the values of the passed channels into a #CoglColor.
*
* Since: 1.0
* Deprecated: 1.4: Use cogl_color_init_from_4ub instead.
*/
void
cogl_color_set_from_4ub (CoglColor *color,
guint8 red,
guint8 green,
guint8 blue,
guint8 alpha);
/**
* cogl_color_init_from_4f:
* @color: A pointer to a #CoglColor to initialize
* @red: value of the red channel, between 0 and %1.0
* @green: value of the green channel, between 0 and %1.0
* @blue: value of the blue channel, between 0 and %1.0
* @alpha: value of the alpha channel, between 0 and %1.0
*
* Sets the values of the passed channels into a #CoglColor
*
* Since: 1.4
*/
void
cogl_color_init_from_4f (CoglColor *color,
float red,
float green,
float blue,
float alpha);
/**
* cogl_color_set_from_4f:
* @color: A pointer to a #CoglColor to initialize
* @red: value of the red channel, between 0 and %1.0
* @green: value of the green channel, between 0 and %1.0
* @blue: value of the blue channel, between 0 and %1.0
* @alpha: value of the alpha channel, between 0 and %1.0
*
* Sets the values of the passed channels into a #CoglColor
*
* Since: 1.0
* Deprecated: 1.4: Use cogl_color_init_from_4f instead.
*/
void
cogl_color_set_from_4f (CoglColor *color,
float red,
float green,
float blue,
float alpha);
/**
* cogl_color_init_from_4fv:
* @color: A pointer to a #CoglColor to initialize
* @color_array: a pointer to an array of 4 float color components
*
* Sets the values of the passed channels into a #CoglColor
*
* Since: 1.4
*/
void
cogl_color_init_from_4fv (CoglColor *color,
float *color_array);
/**
* cogl_color_get_red_byte:
* @color: a #CoglColor
*
* Retrieves the red channel of @color as a byte value
* between 0 and 255
*
* Return value: the red channel of the passed color
*
* Since: 1.0
*/
unsigned char
cogl_color_get_red_byte (const CoglColor *color);
/**
* cogl_color_get_green_byte:
* @color: a #CoglColor
*
* Retrieves the green channel of @color as a byte value
* between 0 and 255
*
* Return value: the green channel of the passed color
*
* Since: 1.0
*/
unsigned char
cogl_color_get_green_byte (const CoglColor *color);
/**
* cogl_color_get_blue_byte:
* @color: a #CoglColor
*
* Retrieves the blue channel of @color as a byte value
* between 0 and 255
*
* Return value: the blue channel of the passed color
*
* Since: 1.0
*/
unsigned char
cogl_color_get_blue_byte (const CoglColor *color);
/**
* cogl_color_get_alpha_byte:
* @color: a #CoglColor
*
* Retrieves the alpha channel of @color as a byte value
* between 0 and 255
*
* Return value: the alpha channel of the passed color
*
* Since: 1.0
*/
unsigned char
cogl_color_get_alpha_byte (const CoglColor *color);
/**
* cogl_color_get_red_float:
* @color: a #CoglColor
*
* Retrieves the red channel of @color as a floating point
* value between 0.0 and 1.0
*
* Return value: the red channel of the passed color
*
* Since: 1.0
*/
float
cogl_color_get_red_float (const CoglColor *color);
/**
* cogl_color_get_green_float:
* @color: a #CoglColor
*
* Retrieves the green channel of @color as a floating point
* value between 0.0 and 1.0
*
* Return value: the green channel of the passed color
*
* Since: 1.0
*/
float
cogl_color_get_green_float (const CoglColor *color);
/**
* cogl_color_get_blue_float:
* @color: a #CoglColor
*
* Retrieves the blue channel of @color as a floating point
* value between 0.0 and 1.0
*
* Return value: the blue channel of the passed color
*
* Since: 1.0
*/
float
cogl_color_get_blue_float (const CoglColor *color);
/**
* cogl_color_get_alpha_float:
* @color: a #CoglColor
*
* Retrieves the alpha channel of @color as a floating point
* value between 0.0 and 1.0
*
* Return value: the alpha channel of the passed color
*
* Since: 1.0
*/
float
cogl_color_get_alpha_float (const CoglColor *color);
/**
* cogl_color_get_red:
* @color: a #CoglColor
*
* Retrieves the red channel of @color as a fixed point
* value between 0 and %1.0.
*
* Return value: the red channel of the passed color
*
* Since: 1.0
*/
float
cogl_color_get_red (const CoglColor *color);
/**
* cogl_color_get_green:
* @color: a #CoglColor
*
* Retrieves the green channel of @color as a fixed point
* value between 0 and %1.0.
*
* Return value: the green channel of the passed color
*
* Since: 1.0
*/
float
cogl_color_get_green (const CoglColor *color);
/**
* cogl_color_get_blue:
* @color: a #CoglColor
*
* Retrieves the blue channel of @color as a fixed point
* value between 0 and %1.0.
*
* Return value: the blue channel of the passed color
*
* Since: 1.0
*/
float
cogl_color_get_blue (const CoglColor *color);
/**
* cogl_color_get_alpha:
* @color: a #CoglColor
*
* Retrieves the alpha channel of @color as a fixed point
* value between 0 and %1.0.
*
* Return value: the alpha channel of the passed color
*
* Since: 1.0
*/
float
cogl_color_get_alpha (const CoglColor *color);
/**
* cogl_color_set_red_byte:
* @color: a #CoglColor
* @red: a byte value between 0 and 255
*
* Sets the red channel of @color to @red.
*
* Since: 1.4
*/
void
cogl_color_set_red_byte (CoglColor *color,
unsigned char red);
/**
* cogl_color_set_green_byte:
* @color: a #CoglColor
* @green: a byte value between 0 and 255
*
* Sets the green channel of @color to @green.
*
* Since: 1.4
*/
void
cogl_color_set_green_byte (CoglColor *color,
unsigned char green);
/**
* cogl_color_set_blue_byte:
* @color: a #CoglColor
* @blue: a byte value between 0 and 255
*
* Sets the blue channel of @color to @blue.
*
* Since: 1.4
*/
void
cogl_color_set_blue_byte (CoglColor *color,
unsigned char blue);
/**
* cogl_color_set_alpha_byte:
* @color: a #CoglColor
* @alpha: a byte value between 0 and 255
*
* Sets the alpha channel of @color to @alpha.
*
* Since: 1.4
*/
void
cogl_color_set_alpha_byte (CoglColor *color,
unsigned char alpha);
/**
* cogl_color_set_red_float:
* @color: a #CoglColor
* @red: a float value between 0.0f and 1.0f
*
* Sets the red channel of @color to @red.
*
* since: 1.4
*/
void
cogl_color_set_red_float (CoglColor *color,
float red);
/**
* cogl_color_set_green_float:
* @color: a #CoglColor
* @green: a float value between 0.0f and 1.0f
*
* Sets the green channel of @color to @green.
*
* since: 1.4
*/
void
cogl_color_set_green_float (CoglColor *color,
float green);
/**
* cogl_color_set_blue_float:
* @color: a #CoglColor
* @blue: a float value between 0.0f and 1.0f
*
* Sets the blue channel of @color to @blue.
*
* since: 1.4
*/
void
cogl_color_set_blue_float (CoglColor *color,
float blue);
/**
* cogl_color_set_alpha_float:
* @color: a #CoglColor
* @alpha: a float value between 0.0f and 1.0f
*
* Sets the alpha channel of @color to @alpha.
*
* since: 1.4
*/
void
cogl_color_set_alpha_float (CoglColor *color,
float alpha);
/**
* cogl_color_set_red:
* @color: a #CoglColor
* @red: a float value between 0.0f and 1.0f
*
* Sets the red channel of @color to @red.
*
* Since: 1.4
*/
void
cogl_color_set_red (CoglColor *color,
float red);
/**
* cogl_color_set_green:
* @color: a #CoglColor
* @green: a float value between 0.0f and 1.0f
*
* Sets the green channel of @color to @green.
*
* Since: 1.4
*/
void
cogl_color_set_green (CoglColor *color,
float green);
/**
* cogl_color_set_blue:
* @color: a #CoglColor
* @blue: a float value between 0.0f and 1.0f
*
* Sets the blue channel of @color to @blue.
*
* Since: 1.4
*/
void
cogl_color_set_blue (CoglColor *color,
float blue);
/**
* cogl_color_set_alpha:
* @color: a #CoglColor
* @alpha: a float value between 0.0f and 1.0f
*
* Sets the alpha channel of @color to @alpha.
*
* Since: 1.4
*/
void
cogl_color_set_alpha (CoglColor *color,
float alpha);
/**
* cogl_color_premultiply:
* @color: the color to premultiply
*
* Converts a non-premultiplied color to a pre-multiplied color. For
* example, semi-transparent red is (1.0, 0, 0, 0.5) when non-premultiplied
* and (0.5, 0, 0, 0.5) when premultiplied.
*
* Since: 1.0
*/
void
cogl_color_premultiply (CoglColor *color);
/**
* cogl_color_unpremultiply:
* @color: the color to unpremultiply
*
* Converts a pre-multiplied color to a non-premultiplied color. For
* example, semi-transparent red is (0.5, 0, 0, 0.5) when premultiplied
* and (1.0, 0, 0, 0.5) when non-premultiplied.
*
* Since: 1.4
*/
void
cogl_color_unpremultiply (CoglColor *color);
/**
* cogl_color_equal:
* @v1: a #CoglColor
* @v2: a #CoglColor
*
* Compares two #CoglColor<!-- -->s and checks if they are the same.
*
* This function can be passed to g_hash_table_new() as the @key_equal_func
* parameter, when using #CoglColor<!-- -->s as keys in a #GHashTable.
*
* Return value: %TRUE if the two colors are the same.
*
* Since: 1.0
*/
gboolean
cogl_color_equal (gconstpointer v1,
gconstpointer v2);
G_END_DECLS
#endif /* __COGL_COLOR_H__ */

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@ -1,282 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_CONTEXT_PRIVATE_H
#define __COGL_CONTEXT_PRIVATE_H
#include "cogl-internal.h"
#include "cogl-context.h"
#include "cogl-winsys-private.h"
#include "cogl-flags.h"
#ifdef COGL_HAS_XLIB_SUPPORT
#include "cogl-xlib-private.h"
#endif
#if HAVE_COGL_GL
#include "cogl-context-driver-gl.h"
#endif
#if HAVE_COGL_GLES || HAVE_COGL_GLES2
#include "cogl-context-driver-gles.h"
#endif
#include "cogl-display-private.h"
#include "cogl-primitives.h"
#include "cogl-clip-stack.h"
#include "cogl-matrix-stack.h"
#include "cogl-pipeline-private.h"
#include "cogl-buffer-private.h"
#include "cogl-bitmask.h"
#include "cogl-atlas.h"
typedef struct
{
GLfloat v[3];
GLfloat t[2];
GLubyte c[4];
} CoglTextureGLVertex;
struct _CoglContext
{
CoglObject _parent;
CoglDisplay *display;
/* Features cache */
CoglFeatureFlags feature_flags;
CoglHandle default_pipeline;
CoglHandle default_layer_0;
CoglHandle default_layer_n;
CoglHandle dummy_layer_dependant;
/* Enable cache */
unsigned long enable_flags;
gboolean enable_backface_culling;
CoglFrontWinding flushed_front_winding;
/* A few handy matrix constants */
CoglMatrix identity_matrix;
CoglMatrix y_flip_matrix;
/* Client-side matrix stack or NULL if none */
CoglMatrixMode flushed_matrix_mode;
/* On GLES2 we need to track the matrices separately because the are
stored in GLSL uniforms rather than using the fixed function
API. We keep track of the matrix stack that Cogl is trying to
flush so we can flush it later after the program is generated. A
reference is taken on the stacks. */
#ifdef HAVE_COGL_GLES2
CoglMatrixStack *flushed_modelview_stack;
CoglMatrixStack *flushed_projection_stack;
#endif /* HAVE_COGL_GLES2 */
GArray *texture_units;
int active_texture_unit;
CoglPipelineFogState legacy_fog_state;
/* Pipelines */
CoglPipeline *opaque_color_pipeline; /* used for set_source_color */
CoglPipeline *blended_color_pipeline; /* used for set_source_color */
CoglPipeline *texture_pipeline; /* used for set_source_texture */
GString *codegen_header_buffer;
GString *codegen_source_buffer;
GList *source_stack;
int legacy_state_set;
#ifdef HAVE_COGL_GL
GHashTable *arbfp_cache;
#endif
/* Textures */
CoglHandle default_gl_texture_2d_tex;
CoglHandle default_gl_texture_rect_tex;
/* Central list of all framebuffers so all journals can be flushed
* at any time. */
GList *framebuffers;
/* Global journal buffers */
GArray *journal_flush_attributes_array;
GArray *journal_clip_bounds;
GArray *polygon_vertices;
/* Some simple caching, to minimize state changes... */
CoglPipeline *current_pipeline;
unsigned long current_pipeline_changes_since_flush;
gboolean current_pipeline_skip_gl_color;
unsigned long current_pipeline_age;
GArray *pipeline0_nodes;
GArray *pipeline1_nodes;
/* Bitmask of attributes enabled. On GLES2 these are the vertex
attribute numbers and on regular GL these are only used for the
texture coordinate arrays */
CoglBitmask arrays_enabled;
/* These are temporary bitmasks that are used when disabling
texcoord arrays. They are here just to avoid allocating new ones
each time */
CoglBitmask arrays_to_change;
CoglBitmask temp_bitmask;
gboolean gl_blend_enable_cache;
gboolean depth_test_enabled_cache;
CoglDepthTestFunction depth_test_function_cache;
gboolean depth_writing_enabled_cache;
float depth_range_near_cache;
float depth_range_far_cache;
gboolean legacy_depth_test_enabled;
float point_size_cache;
CoglBuffer *current_buffer[COGL_BUFFER_BIND_TARGET_COUNT];
/* Framebuffers */
GSList *framebuffer_stack;
CoglHandle window_buffer;
gboolean dirty_bound_framebuffer;
gboolean dirty_gl_viewport;
/* Primitives */
CoglPath *current_path;
CoglPipeline *stencil_pipeline;
/* Pre-generated VBOs containing indices to generate GL_TRIANGLES
out of a vertex array of quads */
CoglHandle quad_buffer_indices_byte;
unsigned int quad_buffer_indices_len;
CoglHandle quad_buffer_indices;
CoglIndices *rectangle_byte_indices;
CoglIndices *rectangle_short_indices;
int rectangle_short_indices_len;
gboolean in_begin_gl_block;
CoglPipeline *texture_download_pipeline;
CoglPipeline *blit_texture_pipeline;
GSList *atlases;
GHookList atlas_reorganize_callbacks;
/* This debugging variable is used to pick a colour for visually
displaying the quad batches. It needs to be global so that it can
be reset by cogl_clear. It needs to be reset to increase the
chances of getting the same colour during an animation */
guint8 journal_rectangles_color;
/* Cached values for GL_MAX_TEXTURE_[IMAGE_]UNITS to avoid calling
glGetInteger too often */
GLint max_texture_units;
GLint max_texture_image_units;
GLint max_activateable_texture_units;
/* Fragment processing programs */
CoglHandle current_program;
CoglPipelineProgramType current_fragment_program_type;
CoglPipelineProgramType current_vertex_program_type;
GLuint current_gl_program;
/* List of types that will be considered a subclass of CoglTexture in
cogl_is_texture */
GSList *texture_types;
/* List of types that will be considered a subclass of CoglBuffer in
cogl_is_buffer */
GSList *buffer_types;
/* Clipping */
/* TRUE if we have a valid clipping stack flushed. In that case
current_clip_stack will describe what the current state is. If
this is FALSE then the current clip stack is completely unknown
so it will need to be reflushed. In that case current_clip_stack
doesn't need to be a valid pointer. We can't just use NULL in
current_clip_stack to mark a dirty state because NULL is a valid
stack (meaning no clipping) */
gboolean current_clip_stack_valid;
/* The clip state that was flushed. This isn't intended to be used
as a stack to push and pop new entries. Instead the current stack
that the user wants is part of the framebuffer state. This is
just used to record the flush state so we can avoid flushing the
same state multiple times. When the clip state is flushed this
will hold a reference */
CoglClipStack *current_clip_stack;
/* Whether the stencil buffer was used as part of the current clip
state. If TRUE then any further use of the stencil buffer (such
as for drawing paths) would need to be merged with the existing
stencil buffer */
gboolean current_clip_stack_uses_stencil;
/* This is used as a temporary buffer to fill a CoglBuffer when
cogl_buffer_map fails and we only want to map to fill it with new
data */
GByteArray *buffer_map_fallback_array;
gboolean buffer_map_fallback_in_use;
CoglWinsysRectangleState rectangle_state;
/* FIXME: remove these when we remove the last xlib based clutter
* backend. they should be tracked as part of the renderer but e.g.
* the eglx backend doesn't yet have a corresponding Cogl winsys
* and so we wont have a renderer in that case. */
#ifdef COGL_HAS_XLIB_SUPPORT
int damage_base;
/* List of callback functions that will be given every Xlib event */
GSList *event_filters;
/* Current top of the XError trap state stack. The actual memory for
these is expected to be allocated on the stack by the caller */
CoglXlibTrapState *trap_state;
#endif
CoglContextDriver drv;
unsigned int winsys_features
[COGL_FLAGS_N_INTS_FOR_SIZE (COGL_WINSYS_FEATURE_N_FEATURES)];
void *winsys;
gboolean stub_winsys;
};
CoglContext *
_cogl_context_get_default ();
const CoglWinsysVtable *
_cogl_context_get_winsys (CoglContext *context);
/* Obtains the context and returns retval if NULL */
#define _COGL_GET_CONTEXT(ctxvar, retval) \
CoglContext *ctxvar = _cogl_context_get_default (); \
if (ctxvar == NULL) return retval;
#define NO_RETVAL
#endif /* __COGL_CONTEXT_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-object.h"
#include "cogl-internal.h"
#include "cogl-private.h"
#include "cogl-winsys-private.h"
#include "cogl-profile.h"
#include "cogl-util.h"
#include "cogl-context-private.h"
#include "cogl-display-private.h"
#include "cogl-renderer-private.h"
#include "cogl-journal-private.h"
#include "cogl-texture-private.h"
#include "cogl-pipeline-private.h"
#include "cogl-pipeline-opengl-private.h"
#include "cogl-framebuffer-private.h"
#include "cogl2-path.h"
#include <string.h>
#ifdef HAVE_COGL_GL
#include "cogl-pipeline-fragend-arbfp-private.h"
#define glActiveTexture _context->drv.pf_glActiveTexture
#endif
/* This isn't defined in the GLES headers */
#ifndef GL_POINT_SPRITE
#define GL_POINT_SPRITE 0x8861
#endif
static void _cogl_context_free (CoglContext *context);
COGL_OBJECT_DEFINE (Context, context);
extern void
_cogl_create_context_driver (CoglContext *context);
static CoglContext *_context = NULL;
static void
_cogl_init_feature_overrides (CoglContext *ctx)
{
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_VBOS)))
ctx->feature_flags &= ~COGL_FEATURE_VBOS;
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_PBOS)))
ctx->feature_flags &= ~COGL_FEATURE_PBOS;
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_ARBFP)))
ctx->feature_flags &= ~COGL_FEATURE_SHADERS_ARBFP;
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_GLSL)))
ctx->feature_flags &= ~COGL_FEATURE_SHADERS_GLSL;
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_DISABLE_NPOT_TEXTURES)))
ctx->feature_flags &= ~(COGL_FEATURE_TEXTURE_NPOT |
COGL_FEATURE_TEXTURE_NPOT_BASIC |
COGL_FEATURE_TEXTURE_NPOT_MIPMAP |
COGL_FEATURE_TEXTURE_NPOT_REPEAT);
}
const CoglWinsysVtable *
_cogl_context_get_winsys (CoglContext *context)
{
return context->display->renderer->winsys_vtable;
}
/* For reference: There was some deliberation over whether to have a
* constructor that could throw an exception but looking at standard
* practices with several high level OO languages including python, C++,
* C# Java and Ruby they all support exceptions in constructors and the
* general consensus appears to be that throwing an exception is neater
* than successfully constructing with an internal error status that
* would then have to be explicitly checked via some form of ::is_ok()
* method.
*/
CoglContext *
cogl_context_new (CoglDisplay *display,
GError **error)
{
CoglContext *context;
GLubyte default_texture_data[] = { 0xff, 0xff, 0xff, 0x0 };
unsigned long enable_flags = 0;
const CoglWinsysVtable *winsys;
int i;
#ifdef CLUTTER_ENABLE_PROFILE
/* We need to be absolutely sure that uprof has been initialized
* before calling _cogl_uprof_init. uprof_init (NULL, NULL)
* will be a NOP if it has been initialized but it will also
* mean subsequent parsing of the UProf GOptionGroup will have no
* affect.
*
* Sadly GOptionGroup based library initialization is extremely
* fragile by design because GOptionGroups have no notion of
* dependencies and so the order things are initialized isn't
* currently under tight control.
*/
uprof_init (NULL, NULL);
_cogl_uprof_init ();
#endif
/* Allocate context memory */
context = g_malloc (sizeof (CoglContext));
/* XXX: Gross hack!
* Currently everything in Cogl just assumes there is a default
* context which it can access via _COGL_GET_CONTEXT() including
* code used to construct a CoglContext. Until all of that code
* has been updated to take an explicit context argument we have
* to immediately make our pointer the default context.
*/
_context = context;
/* Init default values */
context->feature_flags = 0;
context->texture_types = NULL;
context->buffer_types = NULL;
context->rectangle_state = COGL_WINSYS_RECTANGLE_STATE_UNKNOWN;
memset (context->winsys_features, 0, sizeof (context->winsys_features));
if (!display)
display = cogl_display_new (NULL, NULL);
else
cogl_object_ref (display);
if (!cogl_display_setup (display, error))
{
cogl_object_unref (display);
g_free (context);
return NULL;
}
context->display = display;
#ifdef COGL_HAS_FULL_WINSYS
context->stub_winsys = FALSE;
winsys = _cogl_context_get_winsys (context);
if (!winsys->context_init (context, error))
{
cogl_object_unref (display);
g_free (context);
return NULL;
}
#else
/* In this case Clutter is still responsible for creating a GL
* context. */
context->stub_winsys = TRUE;
if (!_cogl_gl_check_version (error))
{
g_free (context);
return NULL;
}
_cogl_gl_update_features (context);
#ifdef COGL_HAS_XLIB_SUPPORT
_cogl_xlib_query_damage_extension ();
#endif
#endif
/* Initialise the driver specific state */
_cogl_init_feature_overrides (context);
_cogl_pipeline_init_default_pipeline ();
_cogl_pipeline_init_default_layers ();
_cogl_pipeline_init_state_hash_functions ();
_cogl_pipeline_init_layer_state_hash_functions ();
context->enable_flags = 0;
context->enable_backface_culling = FALSE;
context->flushed_front_winding = COGL_FRONT_WINDING_COUNTER_CLOCKWISE;
cogl_matrix_init_identity (&context->identity_matrix);
cogl_matrix_init_identity (&context->y_flip_matrix);
cogl_matrix_scale (&context->y_flip_matrix, 1, -1, 1);
context->flushed_matrix_mode = COGL_MATRIX_MODELVIEW;
context->texture_units =
g_array_new (FALSE, FALSE, sizeof (CoglTextureUnit));
/* See cogl-pipeline.c for more details about why we leave texture unit 1
* active by default... */
context->active_texture_unit = 1;
GE (glActiveTexture (GL_TEXTURE1));
context->legacy_fog_state.enabled = FALSE;
context->opaque_color_pipeline = cogl_pipeline_new ();
context->blended_color_pipeline = cogl_pipeline_new ();
context->texture_pipeline = cogl_pipeline_new ();
context->codegen_header_buffer = g_string_new ("");
context->codegen_source_buffer = g_string_new ("");
context->source_stack = NULL;
context->legacy_state_set = 0;
context->default_gl_texture_2d_tex = COGL_INVALID_HANDLE;
context->default_gl_texture_rect_tex = COGL_INVALID_HANDLE;
context->framebuffers = NULL;
context->journal_flush_attributes_array =
g_array_new (TRUE, FALSE, sizeof (CoglAttribute *));
context->journal_clip_bounds = NULL;
context->polygon_vertices = g_array_new (FALSE, FALSE, sizeof (float));
context->current_pipeline = NULL;
context->current_pipeline_changes_since_flush = 0;
context->current_pipeline_skip_gl_color = FALSE;
context->pipeline0_nodes =
g_array_sized_new (FALSE, FALSE, sizeof (CoglHandle), 20);
context->pipeline1_nodes =
g_array_sized_new (FALSE, FALSE, sizeof (CoglHandle), 20);
_cogl_bitmask_init (&context->arrays_enabled);
_cogl_bitmask_init (&context->temp_bitmask);
_cogl_bitmask_init (&context->arrays_to_change);
context->max_texture_units = -1;
context->max_texture_image_units = -1;
context->max_activateable_texture_units = -1;
context->current_program = COGL_INVALID_HANDLE;
context->current_fragment_program_type = COGL_PIPELINE_PROGRAM_TYPE_FIXED;
context->current_vertex_program_type = COGL_PIPELINE_PROGRAM_TYPE_FIXED;
context->current_gl_program = 0;
context->gl_blend_enable_cache = FALSE;
context->depth_test_enabled_cache = FALSE;
context->depth_test_function_cache = COGL_DEPTH_TEST_FUNCTION_LESS;
context->depth_writing_enabled_cache = TRUE;
context->depth_range_near_cache = 0;
context->depth_range_far_cache = 1;
context->point_size_cache = 1.0f;
context->legacy_depth_test_enabled = FALSE;
#ifdef HAVE_COGL_GL
_context->arbfp_cache = g_hash_table_new (_cogl_pipeline_fragend_arbfp_hash,
_cogl_pipeline_fragend_arbfp_equal);
#endif
for (i = 0; i < COGL_BUFFER_BIND_TARGET_COUNT; i++)
context->current_buffer[i] = NULL;
context->framebuffer_stack = _cogl_create_framebuffer_stack ();
/* XXX: In this case the Clutter backend is still responsible for
* the OpenGL binding API and for creating onscreen framebuffers and
* so we have to add a dummy framebuffer to represent the backend
* owned window... */
if (context->stub_winsys)
{
CoglOnscreen *window = _cogl_onscreen_new ();
cogl_set_framebuffer (COGL_FRAMEBUFFER (window));
cogl_object_unref (COGL_FRAMEBUFFER (window));
}
_context->current_clip_stack_valid = FALSE;
context->dirty_bound_framebuffer = TRUE;
context->dirty_gl_viewport = TRUE;
context->current_path = cogl2_path_new ();
context->stencil_pipeline = cogl_pipeline_new ();
context->in_begin_gl_block = FALSE;
context->quad_buffer_indices_byte = COGL_INVALID_HANDLE;
context->quad_buffer_indices = COGL_INVALID_HANDLE;
context->quad_buffer_indices_len = 0;
context->rectangle_byte_indices = NULL;
context->rectangle_short_indices = NULL;
context->rectangle_short_indices_len = 0;
context->texture_download_pipeline = COGL_INVALID_HANDLE;
context->blit_texture_pipeline = COGL_INVALID_HANDLE;
#ifndef HAVE_COGL_GLES2
/* The default for GL_ALPHA_TEST is to always pass which is equivalent to
* the test being disabled therefore we assume that for all drivers there
* will be no performance impact if we always leave the test enabled which
* makes things a bit simpler for us. Under GLES2 the alpha test is
* implemented in the fragment shader so there is no enable for it
*/
GE (glEnable (GL_ALPHA_TEST));
#endif
#ifdef HAVE_COGL_GLES2
_context->flushed_modelview_stack = NULL;
_context->flushed_projection_stack = NULL;
#endif
/* Create default textures used for fall backs */
context->default_gl_texture_2d_tex =
cogl_texture_new_from_data (1, /* width */
1, /* height */
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_RGBA_8888_PRE, /* data format */
/* internal format */
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
0, /* auto calc row stride */
default_texture_data);
context->default_gl_texture_rect_tex =
cogl_texture_new_from_data (1, /* width */
1, /* height */
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_RGBA_8888_PRE, /* data format */
/* internal format */
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
0, /* auto calc row stride */
default_texture_data);
cogl_push_source (context->opaque_color_pipeline);
_cogl_pipeline_flush_gl_state (context->opaque_color_pipeline, FALSE, 0);
_cogl_enable (enable_flags);
_cogl_flush_face_winding ();
context->atlases = NULL;
g_hook_list_init (&context->atlas_reorganize_callbacks, sizeof (GHook));
_context->buffer_map_fallback_array = g_byte_array_new ();
_context->buffer_map_fallback_in_use = FALSE;
/* As far as I can tell, GL_POINT_SPRITE doesn't have any effect
unless GL_COORD_REPLACE is enabled for an individual
layer. Therefore it seems like it should be ok to just leave it
enabled all the time instead of having to have a set property on
each pipeline to track whether any layers have point sprite
coords enabled. We don't need to do this for GLES2 because point
sprites are handled using a builtin varying in the shader. */
#ifndef HAVE_COGL_GLES2
if (cogl_features_available (COGL_FEATURE_POINT_SPRITE))
GE (glEnable (GL_POINT_SPRITE));
#endif
return _cogl_context_object_new (context);
}
static void
_cogl_context_free (CoglContext *context)
{
const CoglWinsysVtable *winsys = _cogl_context_get_winsys (context);
winsys->context_deinit (context);
_cogl_destroy_texture_units ();
_cogl_free_framebuffer_stack (context->framebuffer_stack);
if (context->current_path)
cogl_handle_unref (context->current_path);
if (context->default_gl_texture_2d_tex)
cogl_handle_unref (context->default_gl_texture_2d_tex);
if (context->default_gl_texture_rect_tex)
cogl_handle_unref (context->default_gl_texture_rect_tex);
if (context->opaque_color_pipeline)
cogl_handle_unref (context->opaque_color_pipeline);
if (context->blended_color_pipeline)
cogl_handle_unref (context->blended_color_pipeline);
if (context->texture_pipeline)
cogl_handle_unref (context->texture_pipeline);
if (context->blit_texture_pipeline)
cogl_handle_unref (context->blit_texture_pipeline);
if (context->journal_flush_attributes_array)
g_array_free (context->journal_flush_attributes_array, TRUE);
if (context->journal_clip_bounds)
g_array_free (context->journal_clip_bounds, TRUE);
if (context->polygon_vertices)
g_array_free (context->polygon_vertices, TRUE);
if (context->quad_buffer_indices_byte)
cogl_handle_unref (context->quad_buffer_indices_byte);
if (context->quad_buffer_indices)
cogl_handle_unref (context->quad_buffer_indices);
if (context->rectangle_byte_indices)
cogl_object_unref (context->rectangle_byte_indices);
if (context->rectangle_short_indices)
cogl_object_unref (context->rectangle_short_indices);
if (context->default_pipeline)
cogl_handle_unref (context->default_pipeline);
if (context->dummy_layer_dependant)
cogl_handle_unref (context->dummy_layer_dependant);
if (context->default_layer_n)
cogl_handle_unref (context->default_layer_n);
if (context->default_layer_0)
cogl_handle_unref (context->default_layer_0);
if (context->current_clip_stack_valid)
_cogl_clip_stack_unref (context->current_clip_stack);
g_slist_free (context->atlases);
g_hook_list_clear (&context->atlas_reorganize_callbacks);
_cogl_bitmask_destroy (&context->arrays_enabled);
_cogl_bitmask_destroy (&context->temp_bitmask);
_cogl_bitmask_destroy (&context->arrays_to_change);
g_slist_free (context->texture_types);
g_slist_free (context->buffer_types);
#ifdef HAVE_COGL_GLES2
if (_context->flushed_modelview_stack)
cogl_object_unref (_context->flushed_modelview_stack);
if (_context->flushed_projection_stack)
cogl_object_unref (_context->flushed_projection_stack);
#endif
#ifdef HAVE_COGL_GL
g_hash_table_unref (context->arbfp_cache);
#endif
g_byte_array_free (context->buffer_map_fallback_array, TRUE);
cogl_object_unref (context->display);
g_free (context);
}
CoglContext *
_cogl_context_get_default (void)
{
GError *error = NULL;
/* Create if doesn't exist yet */
if (_context == NULL)
{
_context = cogl_context_new (NULL, &error);
if (!_context)
{
g_warning ("Failed to create default context: %s",
error->message);
g_error_free (error);
}
}
return _context;
}
void
cogl_set_default_context (CoglContext *context)
{
cogl_object_ref (context);
if (_context)
cogl_object_unref (_context);
_context = context;
}
#ifdef COGL_HAS_EGL_SUPPORT
EGLDisplay
cogl_context_egl_get_egl_display (CoglContext *context)
{
const CoglWinsysVtable *winsys = _cogl_context_get_winsys (context);
return winsys->context_egl_get_egl_display (context);
}
#endif

84
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@ -1,84 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_CONTEXT_H__
#define __COGL_CONTEXT_H__
#include <cogl/cogl-display.h>
#ifdef COGL_HAS_EGL_SUPPORT
#ifdef COGL_HAS_GLES1
#include <GLES/gl.h>
#include <GLES/egl.h>
#else
#include <EGL/egl.h>
#define NativeDisplayType EGLNativeDisplayType
#define NativeWindowType EGLNativeWindowType
#endif
#endif
G_BEGIN_DECLS
/**
* SECTION:cogl-context
* @short_description: The top level application context.
*
* A CoglContext is the topmost sandbox of Cogl state for an
* application or toolkit. Its main purpose is to bind together the
* key state objects at any one time; with the most significant being
* the current framebuffer being drawn too (See #CoglFramebuffer for
* more details) and the current GPU pipeline configuration (See
* #CoglPipeline for more details).
*/
typedef struct _CoglContext CoglContext;
#define COGL_CONTEXT(OBJECT) ((CoglContext *)OBJECT)
#define cogl_context_new cogl_context_new_EXP
CoglContext *
cogl_context_new (CoglDisplay *display,
GError **error);
#define cogl_set_default_context cogl_set_default_context_EXP
void
cogl_set_default_context (CoglContext *context);
#ifdef COGL_HAS_EGL_SUPPORT
#define cogl_context_egl_get_egl_display cogl_context_egl_get_egl_display_EXP
EGLDisplay
cogl_context_egl_get_egl_display (CoglContext *context);
#endif
G_END_DECLS
#endif /* __COGL_CONTEXT_H__ */

187
clutter/cogl/cogl/cogl-debug-options.h
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@ -1,187 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
OPT (HANDLE,
"Cogl Tracing",
"ref-counts",
"CoglObject references",
"Debug ref counting issues for CoglObjects")
OPT (SLICING,
"Cogl Tracing",
"slicing",
"Trace Texture Slicing",
"debug the creation of texture slices")
OPT (ATLAS,
"Cogl Tracing",
"atlas",
"Trace Atlas Textures",
"Debug texture atlas management")
OPT (BLEND_STRINGS,
"Cogl Tracing",
"blend-strings",
"Trace Blend Strings",
"Debug CoglBlendString parsing")
OPT (JOURNAL,
"Cogl Tracing",
"journal",
"Trace Journal",
"View all the geometry passing through the journal")
OPT (BATCHING,
"Cogl Tracing",
"batching",
"Trace Batching",
"Show how geometry is being batched in the journal")
OPT (MATRICES,
"Cogl Tracing",
"matrices",
"Trace matrices",
"Trace all matrix manipulation")
/* XXX we should replace the "draw" option its very hand wavy... */
OPT (DRAW,
"Cogl Tracing",
"draw",
"Trace Misc Drawing",
"Trace some misc drawing operations")
OPT (PANGO,
"Cogl Tracing",
"pango",
"Trace Pango Renderer",
"Trace the Cogl Pango renderer")
OPT (TEXTURE_PIXMAP,
"Cogl Tracing",
"texture-pixmap",
"Trace CoglTexturePixmap backend",
"Trace the Cogl texture pixmap backend")
OPT (RECTANGLES,
"Visualize",
"rectangles",
"Outline rectangles",
"Add wire outlines for all rectangular geometry")
OPT (WIREFRAME,
"Visualize",
"wireframe",
"Show wireframes",
"Add wire outlines for all geometry")
OPT (DISABLE_BATCHING,
"Root Cause",
"disable-batching",
"Disable Journal batching",
"Disable batching of geometry in the Cogl Journal.")
OPT (DISABLE_VBOS,
"Root Cause",
"disable-vbos",
"Disable GL Vertex Buffers",
"Disable use of OpenGL vertex buffer objects")
OPT (DISABLE_PBOS,
"Root Cause",
"disable-pbos",
"Disable GL Pixel Buffers",
"Disable use of OpenGL pixel buffer objects")
OPT (DISABLE_SOFTWARE_TRANSFORM,
"Root Cause",
"disable-software-transform",
"Disable software rect transform",
"Use the GPU to transform rectangular geometry")
OPT (DUMP_ATLAS_IMAGE,
"Cogl Specialist",
"dump-atlas-image",
"Dump atlas images",
"Dump texture atlas changes to an image file")
OPT (DISABLE_ATLAS,
"Root Cause",
"disable-atlas",
"Disable texture atlasing",
"Disable use of texture atlasing")
OPT (DISABLE_SHARED_ATLAS,
"Root Cause",
"disable-shared-atlas",
"Disable sharing the texture atlas between text and images",
"When this is set the glyph cache will always use a separate texture "
"for its atlas. Otherwise it will try to share the atlas with images.")
OPT (DISABLE_TEXTURING,
"Root Cause",
"disable-texturing",
"Disable texturing",
"Disable texturing any primitives")
OPT (DISABLE_ARBFP,
"Root Cause",
"disable-arbfp",
"Disable arbfp",
"Disable use of ARB fragment programs")
OPT (DISABLE_FIXED,
"Root Cause",
"disable-fixed",
"Disable fixed",
"Disable use of the fixed function pipeline backend")
OPT (DISABLE_GLSL,
"Root Cause",
"disable-glsl",
"Disable GLSL",
"Disable use of GLSL")
OPT (DISABLE_BLENDING,
"Root Cause",
"disable-blending",
"Disable blending",
"Disable use of blending")
OPT (DISABLE_NPOT_TEXTURES,
"Root Cause",
"disable-npot-textures",
"Disable non-power-of-two textures",
"Makes Cogl think that the GL driver doesn't support NPOT textures "
"so that it will create sliced textures or textures with waste instead.")
OPT (DISABLE_SOFTWARE_CLIP,
"Root Cause",
"disable-software-clip",
"Disable software clipping",
"Disables Cogl's attempts to clip some rectangles in software.")
OPT (SHOW_SOURCE,
"Cogl Tracing",
"show-source",
"Show source",
"Show generated ARBfp/GLSL source code")
OPT (OPENGL,
"Cogl Tracing",
"opengl",
"Trace some OpenGL",
"Traces some select OpenGL calls")
OPT (OFFSCREEN,
"Cogl Tracing",
"offscreen",
"Trace offscreen support",
"Debug offscreen support")
OPT (DISABLE_BLENDING,
"Root Cause",
"disable-program-caches",
"Disable program caches",
"Disable fallback caches for arbfp and glsl programs")
OPT (DISABLE_FAST_READ_PIXEL,
"Root Cause",
"disable-fast-read-pixel",
"Disable read pixel optimization",
"Disable optimization for reading 1px for simple "
"scenes of opaque rectangles")
OPT (CLIPPING,
"Cogl Tracing",
"clipping",
"Trace clipping",
"Logs information about how Cogl is implementing clipping")

248
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@ -1,248 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <glib/gi18n-lib.h>
#include "cogl-debug.h"
#ifdef COGL_ENABLE_DEBUG
/* XXX: If you add a debug option, please also add an option
* definition to cogl-debug-options.h. This will enable us - for
* example - to emit a "help" description for the option.
*/
/* NB: Only these options get enabled if COGL_DEBUG=all is
* used since they don't affect the behaviour of Cogl they
* simply print out verbose information */
static const GDebugKey cogl_log_debug_keys[] = {
{ "handle", COGL_DEBUG_HANDLE },
{ "slicing", COGL_DEBUG_SLICING },
{ "atlas", COGL_DEBUG_ATLAS },
{ "blend-strings", COGL_DEBUG_BLEND_STRINGS },
{ "journal", COGL_DEBUG_JOURNAL },
{ "batching", COGL_DEBUG_BATCHING },
{ "matrices", COGL_DEBUG_MATRICES },
{ "draw", COGL_DEBUG_DRAW },
{ "opengl", COGL_DEBUG_OPENGL },
{ "pango", COGL_DEBUG_PANGO },
{ "show-source", COGL_DEBUG_SHOW_SOURCE},
{ "offscreen", COGL_DEBUG_OFFSCREEN },
{ "texture-pixmap", COGL_DEBUG_TEXTURE_PIXMAP },
{ "bitmap", COGL_DEBUG_BITMAP },
{ "clipping", COGL_DEBUG_CLIPPING }
};
static const int n_cogl_log_debug_keys =
G_N_ELEMENTS (cogl_log_debug_keys);
static const GDebugKey cogl_behavioural_debug_keys[] = {
{ "rectangles", COGL_DEBUG_RECTANGLES },
{ "disable-batching", COGL_DEBUG_DISABLE_BATCHING },
{ "disable-vbos", COGL_DEBUG_DISABLE_VBOS },
{ "disable-pbos", COGL_DEBUG_DISABLE_PBOS },
{ "disable-software-transform", COGL_DEBUG_DISABLE_SOFTWARE_TRANSFORM },
{ "dump-atlas-image", COGL_DEBUG_DUMP_ATLAS_IMAGE },
{ "disable-atlas", COGL_DEBUG_DISABLE_ATLAS },
{ "disable-shared-atlas", COGL_DEBUG_DISABLE_SHARED_ATLAS },
{ "disable-texturing", COGL_DEBUG_DISABLE_TEXTURING},
{ "disable-arbfp", COGL_DEBUG_DISABLE_ARBFP},
{ "disable-fixed", COGL_DEBUG_DISABLE_FIXED},
{ "disable-glsl", COGL_DEBUG_DISABLE_GLSL},
{ "disable-blending", COGL_DEBUG_DISABLE_BLENDING},
{ "disable-npot-textures", COGL_DEBUG_DISABLE_NPOT_TEXTURES},
{ "wireframe", COGL_DEBUG_WIREFRAME},
{ "disable-software-clip", COGL_DEBUG_DISABLE_SOFTWARE_CLIP},
{ "disable-program-caches", COGL_DEBUG_DISABLE_PROGRAM_CACHES},
{ "disable-fast-read-pixel", COGL_DEBUG_DISABLE_FAST_READ_PIXEL}
};
static const int n_cogl_behavioural_debug_keys =
G_N_ELEMENTS (cogl_behavioural_debug_keys);
unsigned int _cogl_debug_flags[COGL_DEBUG_N_INTS];
static void
_cogl_parse_debug_string_for_keys (const char *value,
gboolean enable,
const GDebugKey *keys,
unsigned int nkeys)
{
int int_num, key_num;
/* g_parse_debug_string expects the value field in GDebugKey to be a
mask in a guint but we may have multiple guints so we need to
build a separate array for each possible guint */
for (int_num = 0; int_num < COGL_DEBUG_N_INTS; int_num++)
{
GDebugKey keys_for_int[sizeof (unsigned int) * 8];
unsigned int mask_for_int;
int nkeys_for_int = 0;
for (key_num = 0; key_num < nkeys; key_num++)
if (COGL_FLAGS_GET_INDEX (keys[key_num].value) == int_num)
{
keys_for_int[nkeys_for_int] = keys[key_num];
keys_for_int[nkeys_for_int].value =
COGL_FLAGS_GET_MASK (keys[key_num].value);
nkeys_for_int++;
}
if (nkeys_for_int > 0)
{
mask_for_int = g_parse_debug_string (value,
keys_for_int,
nkeys_for_int);
if (enable)
_cogl_debug_flags[int_num] |= mask_for_int;
else
_cogl_debug_flags[int_num] &= ~mask_for_int;
}
}
}
static void
_cogl_parse_debug_string (const char *value,
gboolean enable,
gboolean ignore_help)
{
if (ignore_help && strcmp (value, "help") == 0)
return;
/* We don't want to let g_parse_debug_string handle "all" because
* literally enabling all the debug options wouldn't be useful to
* anyone; instead the all option enables all non behavioural
* options.
*/
if (strcmp (value, "all") == 0 ||
strcmp (value, "verbose") == 0)
{
int i;
for (i = 0; i < n_cogl_log_debug_keys; i++)
if (enable)
COGL_DEBUG_SET_FLAG (cogl_log_debug_keys[i].value);
else
COGL_DEBUG_CLEAR_FLAG (cogl_log_debug_keys[i].value);
}
else if (strcmp (value, "help") == 0)
{
g_printerr ("\n\n%28s\n", "Supported debug values:");
#define OPT(MASK_NAME, GROUP, NAME, NAME_FORMATTED, DESCRIPTION) \
g_printerr ("%28s %s\n", NAME ":", DESCRIPTION);
#include "cogl-debug-options.h"
g_printerr ("\n%28s\n", "Special debug values:");
OPT (IGNORED, "ignored", "all", "ignored", \
"Enables all non-behavioural debug options");
OPT (IGNORED, "ignored", "verbose", "ignored", \
"Enables all non-behavioural debug options");
#undef OPT
exit (1);
}
else
{
_cogl_parse_debug_string_for_keys (value,
enable,
cogl_log_debug_keys,
n_cogl_log_debug_keys);
_cogl_parse_debug_string_for_keys (value,
enable,
cogl_behavioural_debug_keys,
n_cogl_behavioural_debug_keys);
}
}
static gboolean
cogl_arg_debug_cb (const char *key,
const char *value,
gpointer user_data)
{
_cogl_parse_debug_string (value,
TRUE /* enable the flags */,
FALSE /* don't ignore help */);
return TRUE;
}
static gboolean
cogl_arg_no_debug_cb (const char *key,
const char *value,
gpointer user_data)
{
_cogl_parse_debug_string (value,
FALSE, /* disable the flags */
TRUE /* ignore help */);
return TRUE;
}
#endif /* COGL_ENABLE_DEBUG */
static GOptionEntry cogl_args[] = {
#ifdef COGL_ENABLE_DEBUG
{ "cogl-debug", 0, 0, G_OPTION_ARG_CALLBACK, cogl_arg_debug_cb,
N_("Cogl debugging flags to set"), "FLAGS" },
{ "cogl-no-debug", 0, 0, G_OPTION_ARG_CALLBACK, cogl_arg_no_debug_cb,
N_("Cogl debugging flags to unset"), "FLAGS" },
#endif /* COGL_ENABLE_DEBUG */
{ NULL, },
};
static gboolean
pre_parse_hook (GOptionContext *context,
GOptionGroup *group,
gpointer data,
GError **error)
{
#ifdef COGL_ENABLE_DEBUG
const char *env_string;
env_string = g_getenv ("COGL_DEBUG");
if (env_string != NULL)
{
_cogl_parse_debug_string (env_string,
TRUE /* enable the flags */,
FALSE /* don't ignore help */);
env_string = NULL;
}
#endif /* COGL_ENABLE_DEBUG */
return TRUE;
}
GOptionGroup *
cogl_get_option_group (void)
{
GOptionGroup *group;
group = g_option_group_new ("cogl",
_("Cogl Options"),
_("Show Cogl options"),
NULL, NULL);
g_option_group_set_parse_hooks (group, pre_parse_hook, NULL);
g_option_group_add_entries (group, cogl_args);
g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
return group;
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_DEBUG_H__
#define __COGL_DEBUG_H__
#include "cogl-profile.h"
#include "cogl-flags.h"
#include <glib.h>
G_BEGIN_DECLS
typedef enum {
COGL_DEBUG_SLICING,
COGL_DEBUG_OFFSCREEN,
COGL_DEBUG_DRAW,
COGL_DEBUG_PANGO,
COGL_DEBUG_RECTANGLES,
COGL_DEBUG_HANDLE,
COGL_DEBUG_BLEND_STRINGS,
COGL_DEBUG_DISABLE_BATCHING,
COGL_DEBUG_DISABLE_VBOS,
COGL_DEBUG_DISABLE_PBOS,
COGL_DEBUG_JOURNAL,
COGL_DEBUG_BATCHING,
COGL_DEBUG_DISABLE_SOFTWARE_TRANSFORM,
COGL_DEBUG_MATRICES,
COGL_DEBUG_ATLAS,
COGL_DEBUG_DUMP_ATLAS_IMAGE,
COGL_DEBUG_DISABLE_ATLAS,
COGL_DEBUG_DISABLE_SHARED_ATLAS,
COGL_DEBUG_OPENGL,
COGL_DEBUG_DISABLE_TEXTURING,
COGL_DEBUG_DISABLE_ARBFP,
COGL_DEBUG_DISABLE_FIXED,
COGL_DEBUG_DISABLE_GLSL,
COGL_DEBUG_SHOW_SOURCE,
COGL_DEBUG_DISABLE_BLENDING,
COGL_DEBUG_TEXTURE_PIXMAP,
COGL_DEBUG_BITMAP,
COGL_DEBUG_DISABLE_NPOT_TEXTURES,
COGL_DEBUG_WIREFRAME,
COGL_DEBUG_DISABLE_SOFTWARE_CLIP,
COGL_DEBUG_DISABLE_PROGRAM_CACHES,
COGL_DEBUG_DISABLE_FAST_READ_PIXEL,
COGL_DEBUG_CLIPPING,
COGL_DEBUG_WINSYS,
COGL_DEBUG_N_FLAGS
} CoglDebugFlags;
#ifdef COGL_ENABLE_DEBUG
#define COGL_DEBUG_N_INTS COGL_FLAGS_N_INTS_FOR_SIZE (COGL_DEBUG_N_FLAGS)
extern unsigned int _cogl_debug_flags[COGL_DEBUG_N_INTS];
#define COGL_DEBUG_ENABLED(flag) \
COGL_FLAGS_GET (_cogl_debug_flags, flag)
#define COGL_DEBUG_SET_FLAG(flag) \
COGL_FLAGS_SET (_cogl_debug_flags, flag, TRUE)
#define COGL_DEBUG_CLEAR_FLAG(flag) \
COGL_FLAGS_SET (_cogl_debug_flags, flag, FALSE)
#ifdef __GNUC__
#define COGL_NOTE(type,x,a...) G_STMT_START { \
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_##type))) { \
_cogl_profile_trace_message ("[" #type "] " G_STRLOC " & " x, ##a); \
} } G_STMT_END
#else
#define COGL_NOTE(type,...) G_STMT_START { \
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_##type)) { \
char *_fmt = g_strdup_printf (__VA_ARGS__); \
_cogl_profile_trace_message ("[" #type "] " G_STRLOC " & %s", _fmt);\
g_free (_fmt); \
} } G_STMT_END
#endif /* __GNUC__ */
#else /* !COGL_ENABLE_DEBUG */
#define COGL_NOTE(type,...) G_STMT_START {} G_STMT_END
#define COGL_DEBUG_ENABLED(flag) FALSE
#define COGL_DEBUG_SET_FLAG(flag) \
G_STMT_START { } G_STMT_END
#define COGL_DEBUG_CLEAR_FLAG(flag) \
G_STMT_START { } G_STMT_END
#endif /* COGL_ENABLE_DEBUG */
G_END_DECLS
#endif /* __COGL_DEBUG_H__ */

36
clutter/cogl/cogl/cogl-defines.h.in
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_DEFINES_H__
#define __COGL_DEFINES_H__
#include <glib.h>
@COGL_GL_HEADER_INCLUDES@
G_BEGIN_DECLS
@COGL_DEFINES@
G_END_DECLS
#endif

36
clutter/cogl/cogl/cogl-deprecated.h
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef COGL_DEPRECATED_H
#define cogl_color cogl_color_REPLACED_BY_cogl_set_source_color
#define cogl_enable_depth_test cogl_enable_depth_test_RENAMED_TO_cogl_set_depth_test_enabled
#define cogl_enable_backface_culling cogl_enable_backface_culling_RENAMED_TO_cogl_set_backface_culling_enabled
#define cogl_texture_rectangle cogl_texture_rectangle_REPLACE_BY_cogl_set_source_texture_AND_cogl_rectangle_with_texture_coords
#define cogl_texture_multiple_rectangles cogl_texture_multiple_rectangles_REPLACED_BY_cogl_set_source_texture_AND_cogl_rectangles_with_texture_coords
#define cogl_texture_polygon cogl_texture_polygon_REPLACED_BY_cogl_set_source_texture_AND_cogl_polygon
#endif

57
clutter/cogl/cogl/cogl-display-glx-private.h
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_DISPLAY_GLX_PRIVATE_H
#define __COGL_DISPLAY_GLX_PRIVATE_H
#include "cogl-object-private.h"
#include "cogl-display-xlib-private.h"
typedef struct _CoglGLXCachedConfig
{
/* This will be -1 if there is no cached config in this slot */
int depth;
gboolean found;
GLXFBConfig fb_config;
gboolean can_mipmap;
} CoglGLXCachedConfig;
#define COGL_GLX_N_CACHED_CONFIGS 3
typedef struct _CoglDisplayGLX
{
CoglDisplayXlib _parent;
CoglGLXCachedConfig glx_cached_configs[COGL_GLX_N_CACHED_CONFIGS];
gboolean found_fbconfig;
gboolean fbconfig_has_rgba_visual;
GLXFBConfig fbconfig;
/* Single context for all wins */
GLXContext glx_context;
GLXWindow dummy_glxwin;
} CoglDisplayGLX;
#endif /* __COGL_DISPLAY_GLX_PRIVATE_H */

48
clutter/cogl/cogl/cogl-display-private.h
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_DISPLAY_PRIVATE_H
#define __COGL_DISPLAY_PRIVATE_H
#include "cogl-object-private.h"
#include "cogl-display.h"
#include "cogl-renderer.h"
#include "cogl-onscreen-template.h"
struct _CoglDisplay
{
CoglObject _parent;
gboolean setup;
CoglRenderer *renderer;
CoglOnscreenTemplate *onscreen_template;
#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
struct gdl_plane *gdl_plane;
#endif
void *winsys;
};
#endif /* __COGL_DISPLAY_PRIVATE_H */

35
clutter/cogl/cogl/cogl-display-xlib-private.h
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_DISPLAY_XLIB_PRIVATE_H
#define __COGL_DISPLAY_XLIB_PRIVATE_H
#include <X11/Xlib.h>
typedef struct _CoglDisplayXlib
{
Window dummy_xwin;
} CoglDisplayXlib;
#endif /* __COGL_DISPLAY_XLIB_PRIVATE_H */

135
clutter/cogl/cogl/cogl-display.c
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-object.h"
#include "cogl-display-private.h"
#include "cogl-renderer-private.h"
#include "cogl-winsys-private.h"
static void _cogl_display_free (CoglDisplay *display);
COGL_OBJECT_DEFINE (Display, display);
GQuark
cogl_display_error_quark (void)
{
return g_quark_from_static_string ("cogl-display-error-quark");
}
static void
_cogl_display_free (CoglDisplay *display)
{
if (display->renderer)
{
cogl_object_unref (display->renderer);
display->renderer = NULL;
}
if (display->onscreen_template)
{
cogl_object_unref (display->onscreen_template);
display->onscreen_template = NULL;
}
g_slice_free (CoglDisplay, display);
}
CoglDisplay *
cogl_display_new (CoglRenderer *renderer,
CoglOnscreenTemplate *onscreen_template)
{
CoglDisplay *display = g_slice_new0 (CoglDisplay);
GError *error = NULL;
display->renderer = renderer;
if (renderer)
cogl_object_ref (renderer);
else
display->renderer = cogl_renderer_new ();
if (!cogl_renderer_connect (display->renderer, &error))
{
g_warning ("Failed to connect renderer: %s\n", error->message);
g_error_free (error);
g_object_unref (display->renderer);
g_slice_free (CoglDisplay, display);
return NULL;
}
display->onscreen_template = onscreen_template;
if (onscreen_template)
cogl_object_ref (onscreen_template);
display->setup = FALSE;
return _cogl_display_object_new (display);
}
static const CoglWinsysVtable *
_cogl_display_get_winsys (CoglDisplay *display)
{
return display->renderer->winsys_vtable;
}
gboolean
cogl_display_setup (CoglDisplay *display,
GError **error)
{
#ifdef COGL_HAS_FULL_WINSYS
const CoglWinsysVtable *winsys;
#endif
if (display->setup)
return TRUE;
#ifdef COGL_HAS_FULL_WINSYS
winsys = _cogl_display_get_winsys (display);
if (!winsys->display_setup (display, error))
return FALSE;
#endif
display->setup = TRUE;
return TRUE;
}
#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
void
cogl_gdl_display_set_plane (CoglDisplay *display,
struct gdl_plane *plane)
{
g_return_if_fail (display->setup == FALSE);
display->gdl_plane = plane;
}
#endif

100
clutter/cogl/cogl/cogl-display.h
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_DISPLAY_H__
#define __COGL_DISPLAY_H__
#include <cogl/cogl-renderer.h>
#include <cogl/cogl-onscreen-template.h>
G_BEGIN_DECLS
#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
#include <@CLUTTER_CEX100_LIBGDL_PREFIX@libgdl.h>
#endif
/**
* SECTION:cogl-display
* @short_description: Represents a display pipeline
*
* TODO: We still need to decide if we really need this object or if
* it's enough to just have the CoglSwapChain CoglOnscreenTemplate
* objects.
*
* The basic intention is for this object to let the application
* specify its display preferences before creating a context, and
* there are a few different aspects to this...
*
* Firstly there is the physical display pipeline that is currently
* being used including the digital to analogue conversion hardware
* and the screen the user sees. Although we don't have a plan to
* expose all the advanced features of arbitrary display hardware with
* a Cogl API, some backends may want to expose limited control over
* this hardware via Cogl and simpler features like providing a list
* of modes to choose from in a UI could be nice too.
*
* Another aspect is that the display configuration may be tightly
* related to how onscreen framebuffers should be configured. In fact
* one of the early rationals for this object was to let us handle
* GLX's requirement that framebuffers must be "compatible" with the
* fbconfig associated with the current context meaning we have to
* force the user to describe how they would like to create their
* onscreen windows before we can choose a suitable fbconfig and
* create a GLContext.
*
* TODO: continue this thought process and come to a decision...
*/
typedef struct _CoglDisplay CoglDisplay;
#define COGL_DISPLAY(OBJECT) ((CoglDisplay *)OBJECT)
#define cogl_display_new cogl_display_new_EXP
CoglDisplay *
cogl_display_new (CoglRenderer *renderer,
CoglOnscreenTemplate *onscreen_template);
#define cogl_display_setup cogl_display_setup_EXP
gboolean
cogl_display_setup (CoglDisplay *display,
GError **error);
#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
#define cogl_gdl_display_set_plane \
cogl_gdl_display_set_plane_EXP
void
cogl_gdl_display_set_plane (CoglDisplay *display,
struct gdl_plane *plane);
#endif
G_END_DECLS
#endif /* __COGL_DISPLAY_H__ */

41
clutter/cogl/cogl/cogl-enum-types.c.in
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/*** BEGIN file-header ***/
#include "cogl-enum-types.h"
#include "cogl.h"
/*** END file-header ***/
/*** BEGIN file-production ***/
/* enumerations from "@filename@" */
#include "@filename@"
/*** END file-production ***/
/*** BEGIN value-header ***/
GType
@enum_name@_get_type (void)
{
static volatile gsize g_enum_type_id__volatile = 0;
if (g_once_init_enter (&g_enum_type_id__volatile))
{
static const G@Type@Value values[] = {
/*** END value-header ***/
/*** BEGIN value-production ***/
{ @VALUENAME@, "@VALUENAME@", "@valuenick@" },
/*** END value-production ***/
/*** BEGIN value-tail ***/
{ 0, NULL, NULL }
};
GType g_enum_type_id;
g_enum_type_id =
g_@type@_register_static (g_intern_static_string ("@EnumName@"), values);
g_once_init_leave (&g_enum_type_id__volatile, g_enum_type_id);
}
return g_enum_type_id__volatile;
}
/*** END value-tail ***/

25
clutter/cogl/cogl/cogl-enum-types.h.in
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@ -1,25 +0,0 @@
/*** BEGIN file-header ***/
#ifndef __COGL_ENUM_TYPES_H__
#define __COGL_ENUM_TYPES_H__
#include <glib-object.h>
G_BEGIN_DECLS
/*** END file-header ***/
/*** BEGIN file-production ***/
/* enumerations from "@filename@" */
/*** END file-production ***/
/*** BEGIN file-tail ***/
G_END_DECLS
#endif /* !__CLUTTER_ENUM_TYPES_H__ */
/*** END file-tail ***/
/*** BEGIN value-header ***/
GType @enum_name@_get_type (void) G_GNUC_CONST;
#define COGL_TYPE_@ENUMSHORT@ (@enum_name@_get_type())
/*** END value-header ***/

144
clutter/cogl/cogl/cogl-feature-private.c
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "cogl.h"
#include "cogl-context-private.h"
#include "cogl-feature-private.h"
gboolean
_cogl_feature_check (const char *driver_prefix,
const CoglFeatureData *data,
unsigned int gl_major,
unsigned int gl_minor,
const char *extensions_string,
void *function_table)
{
const char *suffix = NULL;
int func_num;
_COGL_GET_CONTEXT (ctx, FALSE);
/* First check whether the functions should be directly provided by
GL */
if (COGL_CHECK_GL_VERSION (gl_major, gl_minor,
data->min_gl_major, data->min_gl_minor))
suffix = "";
else
{
/* Otherwise try all of the extensions */
const char *namespace, *namespace_suffix;
unsigned int namespace_len;
for (namespace = data->namespaces;
*namespace;
namespace += strlen (namespace) + 1)
{
const char *extension;
GString *full_extension_name = g_string_new ("");
/* If the namespace part contains a ':' then the suffix for
the function names is different from the name space */
if ((namespace_suffix = strchr (namespace, ':')))
{
namespace_len = namespace_suffix - namespace;
namespace_suffix++;
}
else
{
namespace_len = strlen (namespace);
namespace_suffix = namespace;
}
for (extension = data->extension_names;
*extension;
extension += strlen (extension) + 1)
{
g_string_assign (full_extension_name, driver_prefix);
g_string_append_c (full_extension_name, '_');
g_string_append_len (full_extension_name,
namespace, namespace_len);
g_string_append_c (full_extension_name, '_');
g_string_append (full_extension_name, extension);
if (!_cogl_check_extension (full_extension_name->str,
extensions_string))
break;
}
g_string_free (full_extension_name, TRUE);
/* If we found all of the extensions with this namespace
then use it as the suffix */
if (*extension == '\0')
{
suffix = namespace_suffix;
break;
}
}
}
/* If we couldn't find anything that provides the functions then
give up */
if (suffix == NULL)
return FALSE;
/* Try to get all of the entry points */
for (func_num = 0; data->functions[func_num].name; func_num++)
{
void *func;
char *full_function_name;
full_function_name = g_strconcat (data->functions[func_num].name,
suffix, NULL);
func = cogl_get_proc_address (full_function_name);
g_free (full_function_name);
if (func == NULL)
break;
/* Set the function pointer in the context */
*(void **) ((guint8 *) function_table +
data->functions[func_num].pointer_offset) = func;
}
/* If one of the functions wasn't found then we should set all of
the function pointers back to NULL so that the rest of Cogl can
safely do feature testing by just looking at the function
pointers */
if (data->functions[func_num].name)
{
while (func_num-- > 0)
*(void **) ((guint8 *) ctx +
data->functions[func_num].pointer_offset) = NULL;
return FALSE;
}
else
return TRUE;
}

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clutter/cogl/cogl/cogl-feature-private.h
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_FEATURE_PRIVATE_H
#define __COGL_FEATURE_PRIVATE_H
#include <glib.h>
#include "cogl-internal.h"
#define COGL_CHECK_GL_VERSION(driver_major, driver_minor, \
target_major, target_minor) \
((driver_major) > (target_major) || \
((driver_major) == (target_major) && (driver_minor) >= (target_minor)))
typedef struct _CoglFeatureFunction CoglFeatureFunction;
struct _CoglFeatureFunction
{
/* The name of the function without the "EXT" or "ARB" suffix */
const char *name;
/* The offset in the context of where to store the function pointer */
unsigned int pointer_offset;
};
typedef struct _CoglFeatureData CoglFeatureData;
struct _CoglFeatureData
{
/* A minimum GL version which the functions should be defined in
without needing an extension. Set to 255,255 if it's only
provided in an extension */
guint8 min_gl_major, min_gl_minor;
/* \0 separated list of namespaces to try. Eg "EXT\0ARB\0" */
const char *namespaces;
/* \0 separated list of required extension names without the GL_EXT
or GL_ARB prefix. All of the extensions must be available for the
feature to be considered available. If the suffix for an
extension is different from the namespace, you can specify it
with a ':' after the namespace */
const char *extension_names;
/* A set of feature flags to enable if the extension is available */
CoglFeatureFlags feature_flags;
/* FIXME: This is now unused */
int padding_feature_flags_private;
/* An optional corresponding winsys feature. */
CoglWinsysFeature winsys_feature;
/* A list of functions required for this feature. Terminated with a
NULL name */
const CoglFeatureFunction *functions;
};
gboolean
_cogl_feature_check (const char *driver_prefix,
const CoglFeatureData *data,
unsigned int gl_major,
unsigned int gl_minor,
const char *extensions_string,
void *function_table);
#endif /* __COGL_FEATURE_PRIVATE_H */

950
clutter/cogl/cogl/cogl-fixed.c
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@ -1,950 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#define G_IMPLEMENT_INLINES
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-fixed.h"
/* pre-computed sin table for 1st quadrant
*
* Currently contains 257 entries.
*
* The current maximum absolute error is about 1.9e-0.5
* and is greatest around pi/2 where the second derivative
* of sin(x) is greatest. If greater accuracy is needed,
* modestly increasing the table size, or maybe using
* quadratic interpolation would drop the interpolation
* error below the precision limits of CoglFixed.
*/
static const CoglFixed sin_tbl[] =
{
0x00000000L, 0x00000192L, 0x00000324L, 0x000004B6L,
0x00000648L, 0x000007DAL, 0x0000096CL, 0x00000AFEL,
0x00000C90L, 0x00000E21L, 0x00000FB3L, 0x00001144L,
0x000012D5L, 0x00001466L, 0x000015F7L, 0x00001787L,
0x00001918L, 0x00001AA8L, 0x00001C38L, 0x00001DC7L,
0x00001F56L, 0x000020E5L, 0x00002274L, 0x00002402L,
0x00002590L, 0x0000271EL, 0x000028ABL, 0x00002A38L,
0x00002BC4L, 0x00002D50L, 0x00002EDCL, 0x00003067L,
0x000031F1L, 0x0000337CL, 0x00003505L, 0x0000368EL,
0x00003817L, 0x0000399FL, 0x00003B27L, 0x00003CAEL,
0x00003E34L, 0x00003FBAL, 0x0000413FL, 0x000042C3L,
0x00004447L, 0x000045CBL, 0x0000474DL, 0x000048CFL,
0x00004A50L, 0x00004BD1L, 0x00004D50L, 0x00004ECFL,
0x0000504DL, 0x000051CBL, 0x00005348L, 0x000054C3L,
0x0000563EL, 0x000057B9L, 0x00005932L, 0x00005AAAL,
0x00005C22L, 0x00005D99L, 0x00005F0FL, 0x00006084L,
0x000061F8L, 0x0000636BL, 0x000064DDL, 0x0000664EL,
0x000067BEL, 0x0000692DL, 0x00006A9BL, 0x00006C08L,
0x00006D74L, 0x00006EDFL, 0x00007049L, 0x000071B2L,
0x0000731AL, 0x00007480L, 0x000075E6L, 0x0000774AL,
0x000078ADL, 0x00007A10L, 0x00007B70L, 0x00007CD0L,
0x00007E2FL, 0x00007F8CL, 0x000080E8L, 0x00008243L,
0x0000839CL, 0x000084F5L, 0x0000864CL, 0x000087A1L,
0x000088F6L, 0x00008A49L, 0x00008B9AL, 0x00008CEBL,
0x00008E3AL, 0x00008F88L, 0x000090D4L, 0x0000921FL,
0x00009368L, 0x000094B0L, 0x000095F7L, 0x0000973CL,
0x00009880L, 0x000099C2L, 0x00009B03L, 0x00009C42L,
0x00009D80L, 0x00009EBCL, 0x00009FF7L, 0x0000A130L,
0x0000A268L, 0x0000A39EL, 0x0000A4D2L, 0x0000A605L,
0x0000A736L, 0x0000A866L, 0x0000A994L, 0x0000AAC1L,
0x0000ABEBL, 0x0000AD14L, 0x0000AE3CL, 0x0000AF62L,
0x0000B086L, 0x0000B1A8L, 0x0000B2C9L, 0x0000B3E8L,
0x0000B505L, 0x0000B620L, 0x0000B73AL, 0x0000B852L,
0x0000B968L, 0x0000BA7DL, 0x0000BB8FL, 0x0000BCA0L,
0x0000BDAFL, 0x0000BEBCL, 0x0000BFC7L, 0x0000C0D1L,
0x0000C1D8L, 0x0000C2DEL, 0x0000C3E2L, 0x0000C4E4L,
0x0000C5E4L, 0x0000C6E2L, 0x0000C7DEL, 0x0000C8D9L,
0x0000C9D1L, 0x0000CAC7L, 0x0000CBBCL, 0x0000CCAEL,
0x0000CD9FL, 0x0000CE8EL, 0x0000CF7AL, 0x0000D065L,
0x0000D14DL, 0x0000D234L, 0x0000D318L, 0x0000D3FBL,
0x0000D4DBL, 0x0000D5BAL, 0x0000D696L, 0x0000D770L,
0x0000D848L, 0x0000D91EL, 0x0000D9F2L, 0x0000DAC4L,
0x0000DB94L, 0x0000DC62L, 0x0000DD2DL, 0x0000DDF7L,
0x0000DEBEL, 0x0000DF83L, 0x0000E046L, 0x0000E107L,
0x0000E1C6L, 0x0000E282L, 0x0000E33CL, 0x0000E3F4L,
0x0000E4AAL, 0x0000E55EL, 0x0000E610L, 0x0000E6BFL,
0x0000E76CL, 0x0000E817L, 0x0000E8BFL, 0x0000E966L,
0x0000EA0AL, 0x0000EAABL, 0x0000EB4BL, 0x0000EBE8L,
0x0000EC83L, 0x0000ED1CL, 0x0000EDB3L, 0x0000EE47L,
0x0000EED9L, 0x0000EF68L, 0x0000EFF5L, 0x0000F080L,
0x0000F109L, 0x0000F18FL, 0x0000F213L, 0x0000F295L,
0x0000F314L, 0x0000F391L, 0x0000F40CL, 0x0000F484L,
0x0000F4FAL, 0x0000F56EL, 0x0000F5DFL, 0x0000F64EL,
0x0000F6BAL, 0x0000F724L, 0x0000F78CL, 0x0000F7F1L,
0x0000F854L, 0x0000F8B4L, 0x0000F913L, 0x0000F96EL,
0x0000F9C8L, 0x0000FA1FL, 0x0000FA73L, 0x0000FAC5L,
0x0000FB15L, 0x0000FB62L, 0x0000FBADL, 0x0000FBF5L,
0x0000FC3BL, 0x0000FC7FL, 0x0000FCC0L, 0x0000FCFEL,
0x0000FD3BL, 0x0000FD74L, 0x0000FDACL, 0x0000FDE1L,
0x0000FE13L, 0x0000FE43L, 0x0000FE71L, 0x0000FE9CL,
0x0000FEC4L, 0x0000FEEBL, 0x0000FF0EL, 0x0000FF30L,
0x0000FF4EL, 0x0000FF6BL, 0x0000FF85L, 0x0000FF9CL,
0x0000FFB1L, 0x0000FFC4L, 0x0000FFD4L, 0x0000FFE1L,
0x0000FFECL, 0x0000FFF5L, 0x0000FFFBL, 0x0000FFFFL,
0x00010000L,
};
/* pre-computed tan table for 1st quadrant */
static const CoglFixed tan_tbl[] =
{
0x00000000L, 0x00000192L, 0x00000324L, 0x000004b7L,
0x00000649L, 0x000007dbL, 0x0000096eL, 0x00000b01L,
0x00000c94L, 0x00000e27L, 0x00000fbaL, 0x0000114eL,
0x000012e2L, 0x00001477L, 0x0000160cL, 0x000017a1L,
0x00001937L, 0x00001acdL, 0x00001c64L, 0x00001dfbL,
0x00001f93L, 0x0000212cL, 0x000022c5L, 0x0000245fL,
0x000025f9L, 0x00002795L, 0x00002931L, 0x00002aceL,
0x00002c6cL, 0x00002e0aL, 0x00002faaL, 0x0000314aL,
0x000032ecL, 0x0000348eL, 0x00003632L, 0x000037d7L,
0x0000397dL, 0x00003b24L, 0x00003cccL, 0x00003e75L,
0x00004020L, 0x000041ccL, 0x00004379L, 0x00004528L,
0x000046d8L, 0x0000488aL, 0x00004a3dL, 0x00004bf2L,
0x00004da8L, 0x00004f60L, 0x0000511aL, 0x000052d5L,
0x00005492L, 0x00005651L, 0x00005812L, 0x000059d5L,
0x00005b99L, 0x00005d60L, 0x00005f28L, 0x000060f3L,
0x000062c0L, 0x0000648fL, 0x00006660L, 0x00006834L,
0x00006a0aL, 0x00006be2L, 0x00006dbdL, 0x00006f9aL,
0x0000717aL, 0x0000735dL, 0x00007542L, 0x0000772aL,
0x00007914L, 0x00007b02L, 0x00007cf2L, 0x00007ee6L,
0x000080dcL, 0x000082d6L, 0x000084d2L, 0x000086d2L,
0x000088d6L, 0x00008adcL, 0x00008ce7L, 0x00008ef4L,
0x00009106L, 0x0000931bL, 0x00009534L, 0x00009750L,
0x00009971L, 0x00009b95L, 0x00009dbeL, 0x00009febL,
0x0000a21cL, 0x0000a452L, 0x0000a68cL, 0x0000a8caL,
0x0000ab0eL, 0x0000ad56L, 0x0000afa3L, 0x0000b1f5L,
0x0000b44cL, 0x0000b6a8L, 0x0000b909L, 0x0000bb70L,
0x0000bdddL, 0x0000c04fL, 0x0000c2c7L, 0x0000c545L,
0x0000c7c9L, 0x0000ca53L, 0x0000cce3L, 0x0000cf7aL,
0x0000d218L, 0x0000d4bcL, 0x0000d768L, 0x0000da1aL,
0x0000dcd4L, 0x0000df95L, 0x0000e25eL, 0x0000e52eL,
0x0000e806L, 0x0000eae7L, 0x0000edd0L, 0x0000f0c1L,
0x0000f3bbL, 0x0000f6bfL, 0x0000f9cbL, 0x0000fce1L,
0x00010000L, 0x00010329L, 0x0001065dL, 0x0001099aL,
0x00010ce3L, 0x00011036L, 0x00011394L, 0x000116feL,
0x00011a74L, 0x00011df6L, 0x00012184L, 0x0001251fL,
0x000128c6L, 0x00012c7cL, 0x0001303fL, 0x00013410L,
0x000137f0L, 0x00013bdfL, 0x00013fddL, 0x000143ebL,
0x00014809L, 0x00014c37L, 0x00015077L, 0x000154c9L,
0x0001592dL, 0x00015da4L, 0x0001622eL, 0x000166ccL,
0x00016b7eL, 0x00017045L, 0x00017523L, 0x00017a17L,
0x00017f22L, 0x00018444L, 0x00018980L, 0x00018ed5L,
0x00019445L, 0x000199cfL, 0x00019f76L, 0x0001a53aL,
0x0001ab1cL, 0x0001b11dL, 0x0001b73fL, 0x0001bd82L,
0x0001c3e7L, 0x0001ca71L, 0x0001d11fL, 0x0001d7f4L,
0x0001def1L, 0x0001e618L, 0x0001ed6aL, 0x0001f4e8L,
0x0001fc96L, 0x00020473L, 0x00020c84L, 0x000214c9L,
0x00021d44L, 0x000225f9L, 0x00022ee9L, 0x00023818L,
0x00024187L, 0x00024b3aL, 0x00025534L, 0x00025f78L,
0x00026a0aL, 0x000274edL, 0x00028026L, 0x00028bb8L,
0x000297a8L, 0x0002a3fbL, 0x0002b0b5L, 0x0002bdddL,
0x0002cb79L, 0x0002d98eL, 0x0002e823L, 0x0002f740L,
0x000306ecL, 0x00031730L, 0x00032816L, 0x000339a6L,
0x00034bebL, 0x00035ef2L, 0x000372c6L, 0x00038776L,
0x00039d11L, 0x0003b3a6L, 0x0003cb48L, 0x0003e40aL,
0x0003fe02L, 0x00041949L, 0x000435f7L, 0x0004542bL,
0x00047405L, 0x000495a9L, 0x0004b940L, 0x0004def6L,
0x00050700L, 0x00053196L, 0x00055ef9L, 0x00058f75L,
0x0005c35dL, 0x0005fb14L, 0x00063709L, 0x000677c0L,
0x0006bdd0L, 0x000709ecL, 0x00075ce6L, 0x0007b7bbL,
0x00081b98L, 0x000889e9L, 0x0009046eL, 0x00098d4dL,
0x000a2736L, 0x000ad593L, 0x000b9cc6L, 0x000c828aL,
0x000d8e82L, 0x000ecb1bL, 0x001046eaL, 0x00121703L,
0x00145b00L, 0x0017448dL, 0x001b2672L, 0x002095afL,
0x0028bc49L, 0x0036519aL, 0x00517bb6L, 0x00a2f8fdL,
0x46d3eab2L,
};
/* 257-value table of atan.
*
* atan_tbl[0] is atan(0.0) and atan_tbl[256] is atan(1).
* The angles are radians in CoglFixed truncated to 16-bit (they're
* all less than one)
*/
static const guint16 atan_tbl[] =
{
0x0000, 0x00FF, 0x01FF, 0x02FF, 0x03FF, 0x04FF, 0x05FF, 0x06FF,
0x07FF, 0x08FF, 0x09FE, 0x0AFE, 0x0BFD, 0x0CFD, 0x0DFC, 0x0EFB,
0x0FFA, 0x10F9, 0x11F8, 0x12F7, 0x13F5, 0x14F3, 0x15F2, 0x16F0,
0x17EE, 0x18EB, 0x19E9, 0x1AE6, 0x1BE3, 0x1CE0, 0x1DDD, 0x1ED9,
0x1FD5, 0x20D1, 0x21CD, 0x22C8, 0x23C3, 0x24BE, 0x25B9, 0x26B3,
0x27AD, 0x28A7, 0x29A1, 0x2A9A, 0x2B93, 0x2C8B, 0x2D83, 0x2E7B,
0x2F72, 0x306A, 0x3160, 0x3257, 0x334D, 0x3442, 0x3538, 0x362D,
0x3721, 0x3815, 0x3909, 0x39FC, 0x3AEF, 0x3BE2, 0x3CD4, 0x3DC5,
0x3EB6, 0x3FA7, 0x4097, 0x4187, 0x4277, 0x4365, 0x4454, 0x4542,
0x462F, 0x471C, 0x4809, 0x48F5, 0x49E0, 0x4ACB, 0x4BB6, 0x4CA0,
0x4D89, 0x4E72, 0x4F5B, 0x5043, 0x512A, 0x5211, 0x52F7, 0x53DD,
0x54C2, 0x55A7, 0x568B, 0x576F, 0x5852, 0x5934, 0x5A16, 0x5AF7,
0x5BD8, 0x5CB8, 0x5D98, 0x5E77, 0x5F55, 0x6033, 0x6110, 0x61ED,
0x62C9, 0x63A4, 0x647F, 0x6559, 0x6633, 0x670C, 0x67E4, 0x68BC,
0x6993, 0x6A6A, 0x6B40, 0x6C15, 0x6CEA, 0x6DBE, 0x6E91, 0x6F64,
0x7036, 0x7108, 0x71D9, 0x72A9, 0x7379, 0x7448, 0x7516, 0x75E4,
0x76B1, 0x777E, 0x7849, 0x7915, 0x79DF, 0x7AA9, 0x7B72, 0x7C3B,
0x7D03, 0x7DCA, 0x7E91, 0x7F57, 0x801C, 0x80E1, 0x81A5, 0x8269,
0x832B, 0x83EE, 0x84AF, 0x8570, 0x8630, 0x86F0, 0x87AF, 0x886D,
0x892A, 0x89E7, 0x8AA4, 0x8B5F, 0x8C1A, 0x8CD5, 0x8D8E, 0x8E47,
0x8F00, 0x8FB8, 0x906F, 0x9125, 0x91DB, 0x9290, 0x9345, 0x93F9,
0x94AC, 0x955F, 0x9611, 0x96C2, 0x9773, 0x9823, 0x98D2, 0x9981,
0x9A2F, 0x9ADD, 0x9B89, 0x9C36, 0x9CE1, 0x9D8C, 0x9E37, 0x9EE0,
0x9F89, 0xA032, 0xA0DA, 0xA181, 0xA228, 0xA2CE, 0xA373, 0xA418,
0xA4BC, 0xA560, 0xA602, 0xA6A5, 0xA746, 0xA7E8, 0xA888, 0xA928,
0xA9C7, 0xAA66, 0xAB04, 0xABA1, 0xAC3E, 0xACDB, 0xAD76, 0xAE11,
0xAEAC, 0xAF46, 0xAFDF, 0xB078, 0xB110, 0xB1A7, 0xB23E, 0xB2D5,
0xB36B, 0xB400, 0xB495, 0xB529, 0xB5BC, 0xB64F, 0xB6E2, 0xB773,
0xB805, 0xB895, 0xB926, 0xB9B5, 0xBA44, 0xBAD3, 0xBB61, 0xBBEE,
0xBC7B, 0xBD07, 0xBD93, 0xBE1E, 0xBEA9, 0xBF33, 0xBFBC, 0xC046,
0xC0CE, 0xC156, 0xC1DD, 0xC264, 0xC2EB, 0xC371, 0xC3F6, 0xC47B,
0xC4FF, 0xC583, 0xC606, 0xC689, 0xC70B, 0xC78D, 0xC80E, 0xC88F,
0xC90F
};
/* look up table for square root */
static const CoglFixed sqrt_tbl[] =
{
0x00000000L, 0x00010000L, 0x00016A0AL, 0x0001BB68L,
0x00020000L, 0x00023C6FL, 0x00027312L, 0x0002A550L,
0x0002D414L, 0x00030000L, 0x0003298BL, 0x0003510EL,
0x000376CFL, 0x00039B05L, 0x0003BDDDL, 0x0003DF7CL,
0x00040000L, 0x00041F84L, 0x00043E1EL, 0x00045BE1L,
0x000478DEL, 0x00049524L, 0x0004B0BFL, 0x0004CBBCL,
0x0004E624L, 0x00050000L, 0x00051959L, 0x00053237L,
0x00054AA0L, 0x0005629AL, 0x00057A2BL, 0x00059159L,
0x0005A828L, 0x0005BE9CL, 0x0005D4B9L, 0x0005EA84L,
0x00060000L, 0x00061530L, 0x00062A17L, 0x00063EB8L,
0x00065316L, 0x00066733L, 0x00067B12L, 0x00068EB4L,
0x0006A21DL, 0x0006B54DL, 0x0006C847L, 0x0006DB0CL,
0x0006ED9FL, 0x00070000L, 0x00071232L, 0x00072435L,
0x0007360BL, 0x000747B5L, 0x00075935L, 0x00076A8CL,
0x00077BBBL, 0x00078CC2L, 0x00079DA3L, 0x0007AE60L,
0x0007BEF8L, 0x0007CF6DL, 0x0007DFBFL, 0x0007EFF0L,
0x00080000L, 0x00080FF0L, 0x00081FC1L, 0x00082F73L,
0x00083F08L, 0x00084E7FL, 0x00085DDAL, 0x00086D18L,
0x00087C3BL, 0x00088B44L, 0x00089A32L, 0x0008A906L,
0x0008B7C2L, 0x0008C664L, 0x0008D4EEL, 0x0008E361L,
0x0008F1BCL, 0x00090000L, 0x00090E2EL, 0x00091C45L,
0x00092A47L, 0x00093834L, 0x0009460CL, 0x000953CFL,
0x0009617EL, 0x00096F19L, 0x00097CA1L, 0x00098A16L,
0x00099777L, 0x0009A4C6L, 0x0009B203L, 0x0009BF2EL,
0x0009CC47L, 0x0009D94FL, 0x0009E645L, 0x0009F32BL,
0x000A0000L, 0x000A0CC5L, 0x000A1979L, 0x000A261EL,
0x000A32B3L, 0x000A3F38L, 0x000A4BAEL, 0x000A5816L,
0x000A646EL, 0x000A70B8L, 0x000A7CF3L, 0x000A8921L,
0x000A9540L, 0x000AA151L, 0x000AAD55L, 0x000AB94BL,
0x000AC534L, 0x000AD110L, 0x000ADCDFL, 0x000AE8A1L,
0x000AF457L, 0x000B0000L, 0x000B0B9DL, 0x000B172DL,
0x000B22B2L, 0x000B2E2BL, 0x000B3998L, 0x000B44F9L,
0x000B504FL, 0x000B5B9AL, 0x000B66D9L, 0x000B720EL,
0x000B7D37L, 0x000B8856L, 0x000B936AL, 0x000B9E74L,
0x000BA973L, 0x000BB467L, 0x000BBF52L, 0x000BCA32L,
0x000BD508L, 0x000BDFD5L, 0x000BEA98L, 0x000BF551L,
0x000C0000L, 0x000C0AA6L, 0x000C1543L, 0x000C1FD6L,
0x000C2A60L, 0x000C34E1L, 0x000C3F59L, 0x000C49C8L,
0x000C542EL, 0x000C5E8CL, 0x000C68E0L, 0x000C732DL,
0x000C7D70L, 0x000C87ACL, 0x000C91DFL, 0x000C9C0AL,
0x000CA62CL, 0x000CB047L, 0x000CBA59L, 0x000CC464L,
0x000CCE66L, 0x000CD861L, 0x000CE254L, 0x000CEC40L,
0x000CF624L, 0x000D0000L, 0x000D09D5L, 0x000D13A2L,
0x000D1D69L, 0x000D2727L, 0x000D30DFL, 0x000D3A90L,
0x000D4439L, 0x000D4DDCL, 0x000D5777L, 0x000D610CL,
0x000D6A9AL, 0x000D7421L, 0x000D7DA1L, 0x000D871BL,
0x000D908EL, 0x000D99FAL, 0x000DA360L, 0x000DACBFL,
0x000DB618L, 0x000DBF6BL, 0x000DC8B7L, 0x000DD1FEL,
0x000DDB3DL, 0x000DE477L, 0x000DEDABL, 0x000DF6D8L,
0x000E0000L, 0x000E0922L, 0x000E123DL, 0x000E1B53L,
0x000E2463L, 0x000E2D6DL, 0x000E3672L, 0x000E3F70L,
0x000E4869L, 0x000E515DL, 0x000E5A4BL, 0x000E6333L,
0x000E6C16L, 0x000E74F3L, 0x000E7DCBL, 0x000E869DL,
0x000E8F6BL, 0x000E9832L, 0x000EA0F5L, 0x000EA9B2L,
0x000EB26BL, 0x000EBB1EL, 0x000EC3CBL, 0x000ECC74L,
0x000ED518L, 0x000EDDB7L, 0x000EE650L, 0x000EEEE5L,
0x000EF775L, 0x000F0000L, 0x000F0886L, 0x000F1107L,
0x000F1984L, 0x000F21FCL, 0x000F2A6FL, 0x000F32DDL,
0x000F3B47L, 0x000F43ACL, 0x000F4C0CL, 0x000F5468L,
0x000F5CBFL, 0x000F6512L, 0x000F6D60L, 0x000F75AAL,
0x000F7DEFL, 0x000F8630L, 0x000F8E6DL, 0x000F96A5L,
0x000F9ED9L, 0x000FA709L, 0x000FAF34L, 0x000FB75BL,
0x000FBF7EL, 0x000FC79DL, 0x000FCFB7L, 0x000FD7CEL,
0x000FDFE0L, 0x000FE7EEL, 0x000FEFF8L, 0x000FF7FEL,
0x00100000L,
};
/* the difference of the angle for two adjacent values in the
* sin_tbl table, expressed as CoglFixed number
*/
static const int sin_tbl_size = G_N_ELEMENTS (sin_tbl) - 1;
static const double _magic = 68719476736.0 * 1.5;
/* Where in the 64 bits of double is the mantissa.
*
* FIXME - this should go inside the configure.ac
*/
#if (__FLOAT_WORD_ORDER == 1234)
#define _COGL_MAN 0
#elif (__FLOAT_WORD_ORDER == 4321)
#define _COGL_MAN 1
#else
#define COGL_NO_FAST_CONVERSIONS
#endif
/*
* cogl_double_to_fixed :
* @value: value to be converted
*
* A fast conversion from double precision floating to fixed point
*
* Return value: Fixed point representation of the value
*/
CoglFixed
cogl_double_to_fixed (double val)
{
#ifdef COGL_NO_FAST_CONVERSIONS
return (CoglFixed) (val * (double) COGL_FIXED_1);
#else
union {
double d;
unsigned int i[2];
} dbl;
dbl.d = val;
dbl.d = dbl.d + _magic;
return dbl.i[_COGL_MAN];
#endif
}
/*
* cogl_double_to_int :
* @value: value to be converted
*
* A fast conversion from doulbe precision floatint point to int;
* used this instead of casting double/float to int.
*
* Return value: Integer part of the double
*/
int
cogl_double_to_int (double val)
{
#ifdef COGL_NO_FAST_CONVERSIONS
return (int) (val);
#else
union {
double d;
unsigned int i[2];
} dbl;
dbl.d = val;
dbl.d = dbl.d + _magic;
return ((int) dbl.i[_COGL_MAN]) >> 16;
#endif
}
unsigned int
cogl_double_to_uint (double val)
{
#ifdef COGL_NO_FAST_CONVERSIONS
return (unsigned int)(val);
#else
union {
double d;
unsigned int i[2];
} dbl;
dbl.d = val;
dbl.d = dbl.d + _magic;
return (dbl.i[_COGL_MAN]) >> 16;
#endif
}
#undef _COGL_MAN
CoglFixed
cogl_fixed_sin (CoglFixed angle)
{
int sign = 1, indx1, indx2;
CoglFixed low, high;
CoglFixed p1, p2;
CoglFixed d1, d2;
/* convert negative angle to positive + sign */
if ((int) angle < 0)
{
sign = -sign;
angle = -angle;
}
/* reduce to <0, 2*pi) */
angle = angle % COGL_FIXED_2_PI;
/* reduce to first quadrant and sign */
if (angle > COGL_FIXED_PI)
{
sign = -sign;
if (angle > COGL_FIXED_PI + COGL_FIXED_PI_2)
{
/* fourth qudrant */
angle = COGL_FIXED_2_PI - angle;
}
else
{
/* third quadrant */
angle -= COGL_FIXED_PI;
}
}
else
{
if (angle > COGL_FIXED_PI_2)
{
/* second quadrant */
angle = COGL_FIXED_PI - angle;
}
}
/* Calculate indices of the two nearest values in our table
* and return weighted average.
*
* We multiple first than divide to preserve precision. Since
* angle is in the first quadrant, angle * SIN_TBL_SIZE (=256)
* can't overflow.
*
* Handle the end of the table gracefully
*/
indx1 = (angle * sin_tbl_size) / COGL_FIXED_PI_2;
if (indx1 == sin_tbl_size)
{
indx2 = indx1;
indx1 = indx2 - 1;
}
else
{
indx2 = indx1 + 1;
}
low = sin_tbl[indx1];
high = sin_tbl[indx2];
/* Again multiply the divide; no danger of overflow */
p1 = (indx1 * COGL_FIXED_PI_2) / sin_tbl_size;
p2 = (indx2 * COGL_FIXED_PI_2) / sin_tbl_size;
d1 = angle - p1;
d2 = p2 - angle;
angle = ((low * d2 + high * d1) / (p2 - p1));
if (sign < 0)
angle = -angle;
return angle;
}
CoglFixed
cogl_angle_sin (CoglAngle angle)
{
int sign = 1;
CoglFixed result;
/* reduce negative angle to positive + sign */
if (angle < 0)
{
sign = -sign;
angle = -angle;
}
/* reduce to <0, 2*pi) */
angle &= 0x3ff;
/* reduce to first quadrant and sign */
if (angle > 512)
{
sign = -sign;
if (angle > 768)
{
/* fourth qudrant */
angle = 1024 - angle;
}
else
{
/* third quadrant */
angle -= 512;
}
}
else
{
if (angle > 256)
{
/* second quadrant */
angle = 512 - angle;
}
}
result = sin_tbl[angle];
if (sign < 0)
result = -result;
return result;
}
CoglFixed
cogl_fixed_tan (CoglFixed angle)
{
return cogl_angle_tan (COGL_ANGLE_FROM_DEGX (angle));
}
CoglFixed
cogl_angle_tan (CoglAngle angle)
{
int sign = 1;
CoglFixed result;
/* reduce negative angle to positive + sign */
if (angle < 0)
{
sign = -sign;
angle = -angle;
}
/* reduce to <0, pi) */
angle &= 0x1ff;
/* reduce to first quadrant and sign */
if (angle > 256)
{
sign = -sign;
angle = 512 - angle;
}
result = tan_tbl[angle];
if (sign < 0)
result = -result;
return result;
}
CoglFixed
cogl_fixed_atan (CoglFixed x)
{
gboolean negative = FALSE;
CoglFixed angle;
if (x < 0)
{
negative = TRUE;
x = -x;
}
if (x > COGL_FIXED_1)
{
/* if x > 1 then atan(x) = pi/2 - atan(1/x) */
angle = COGL_FIXED_PI / 2
- atan_tbl[COGL_FIXED_DIV (COGL_FIXED_1, x) >> 8];
}
else
angle = atan_tbl[x >> 8];
return negative ? -angle : angle;
}
CoglFixed
cogl_fixed_atan2 (CoglFixed y, CoglFixed x)
{
CoglFixed angle;
if (x == 0)
angle = y >= 0 ? COGL_FIXED_PI_2 : -COGL_FIXED_PI_2;
else
{
angle = cogl_fixed_atan (COGL_FIXED_DIV (y, x));
if (x < 0)
angle += y >= 0 ? COGL_FIXED_PI : -COGL_FIXED_PI;
}
return angle;
}
CoglFixed
cogl_fixed_sqrt (CoglFixed x)
{
/* The idea for this comes from the Alegro library, exploiting the
* fact that,
* sqrt (x) = sqrt (x/d) * sqrt (d);
*
* For d == 2^(n):
*
* sqrt (x) = sqrt (x/2^(2n)) * 2^n
*
* By locating suitable n for given x such that x >> 2n is in <0,255>
* we can use a LUT of precomputed values.
*
* This algorithm provides both good performance and precision;
* on ARM this function is about 5 times faster than c-lib sqrt,
* whilst producing errors < 1%.
*/
int t = 0;
int sh = 0;
unsigned int mask = 0x40000000;
unsigned fract = x & 0x0000ffff;
unsigned int d1, d2;
CoglFixed v1, v2;
if (x <= 0)
return 0;
if (x > COGL_FIXED_255 || x < COGL_FIXED_1)
{
/*
* Find the highest bit set
*/
#if __arm__
/* This actually requires at least arm v5, but gcc does not seem
* to set the architecture defines correctly, and it is I think
* very unlikely that anyone will want to use clutter on anything
* less than v5.
*/
int bit;
__asm__ ("clz %0, %1\n"
"rsb %0, %0, #31\n"
:"=r"(bit)
:"r" (x));
/* make even (2n) */
bit &= 0xfffffffe;
#else
/* TODO -- add i386 branch using bshr
*
* NB: it's been said that the bshr instruction is poorly implemented
* and that it is possible to write a faster code in C using binary
* search -- at some point we should explore this
*/
int bit = 30;
while (bit >= 0)
{
if (x & mask)
break;
mask = (mask >> 1 | mask >> 2);
bit -= 2;
}
#endif
/* now bit indicates the highest bit set; there are two scenarios
*
* 1) bit < 23: Our number is smaller so we shift it left to maximase
* precision (< 16 really, since <16,23> never goes
* through here.
*
* 2) bit > 23: our number is above the table, so we shift right
*/
sh = ((bit - 22) >> 1);
if (bit >= 8)
t = (x >> (16 - 22 + bit));
else
t = (x << (22 - 16 - bit));
}
else
{
t = COGL_FIXED_TO_INT (x);
}
/* Do a weighted average of the two nearest values */
v1 = sqrt_tbl[t];
v2 = sqrt_tbl[t+1];
/*
* 12 is fairly arbitrary -- we want integer that is not too big to cost
* us precision
*/
d1 = (unsigned)(fract) >> 12;
d2 = ((unsigned)COGL_FIXED_1 >> 12) - d1;
x = ((v1*d2) + (v2*d1))/(COGL_FIXED_1 >> 12);
if (sh > 0)
x = x << sh;
else if (sh < 0)
x = x >> -sh;
return x;
}
/**
* cogl_sqrti:
* @x: integer value
*
* Very fast fixed point implementation of square root for integers.
*
* This function is at least 6x faster than clib sqrt() on x86, and (this is
* not a typo!) about 500x faster on ARM without FPU. It's error is < 5%
* for arguments < %COGL_SQRTI_ARG_5_PERCENT and < 10% for arguments <
* %COGL_SQRTI_ARG_10_PERCENT. The maximum argument that can be passed to
* this function is COGL_SQRTI_ARG_MAX.
*
* Return value: integer square root.
*
*
* Since: 0.2
*/
int
cogl_sqrti (int number)
{
#if defined __SSE2__
/* The GCC built-in with SSE2 (sqrtsd) is up to twice as fast as
* the pure integer code below. It is also more accurate.
*/
return __builtin_sqrt (number);
#else
/* This is a fixed point implementation of the Quake III sqrt algorithm,
* described, for example, at
* http://www.codemaestro.com/reviews/review00000105.html
*
* While the original QIII is extremely fast, the use of floating division
* and multiplication makes it perform very on arm processors without FPU.
*
* The key to successfully replacing the floating point operations with
* fixed point is in the choice of the fixed point format. The QIII
* algorithm does not calculate the square root, but its reciprocal ('y'
* below), which is only at the end turned to the inverse value. In order
* for the algorithm to produce satisfactory results, the reciprocal value
* must be represented with sufficient precission; the 16.16 we use
* elsewhere in clutter is not good enough, and 10.22 is used instead.
*/
CoglFixed x;
guint32 y_1; /* 10.22 fixed point */
guint32 f = 0x600000; /* '1.5' as 10.22 fixed */
union
{
float f;
guint32 i;
} flt, flt2;
flt.f = number;
x = COGL_FIXED_FROM_INT (number) / 2;
/* The QIII initial estimate */
flt.i = 0x5f3759df - ( flt.i >> 1 );
/* Now, we convert the float to 10.22 fixed. We exploit the mechanism
* described at http://www.d6.com/users/checker/pdfs/gdmfp.pdf.
*
* We want 22 bit fraction; a single precission float uses 23 bit
* mantisa, so we only need to add 2^(23-22) (no need for the 1.5
* multiplier as we are only dealing with positive numbers).
*
* Note: we have to use two separate variables here -- for some reason,
* if we try to use just the flt variable, gcc on ARM optimises the whole
* addition out, and it all goes pear shape, since without it, the bits
* in the float will not be correctly aligned.
*/
flt2.f = flt.f + 2.0;
flt2.i &= 0x7FFFFF;
/* Now we correct the estimate */
y_1 = (flt2.i >> 11) * (flt2.i >> 11);
y_1 = (y_1 >> 8) * (x >> 8);
y_1 = f - y_1;
flt2.i = (flt2.i >> 11) * (y_1 >> 11);
/* If the original argument is less than 342, we do another
* iteration to improve precission (for arguments >= 342, the single
* iteration produces generally better results).
*/
if (x < 171)
{
y_1 = (flt2.i >> 11) * (flt2.i >> 11);
y_1 = (y_1 >> 8) * (x >> 8);
y_1 = f - y_1;
flt2.i = (flt2.i >> 11) * (y_1 >> 11);
}
/* Invert, round and convert from 10.22 to an integer
* 0x1e3c68 is a magical rounding constant that produces slightly
* better results than 0x200000.
*/
return (number * flt2.i + 0x1e3c68) >> 22;
#endif
}
CoglFixed
cogl_fixed_mul (CoglFixed a,
CoglFixed b)
{
#ifdef __arm__
/* This provides about 12% speedeup on the gcc -O2 optimised
* C version
*
* Based on code found in the following thread:
* http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2006-August/014405.html
*/
int res_low, res_hi;
__asm__ ("smull %0, %1, %2, %3 \n"
"mov %0, %0, lsr %4 \n"
"add %1, %0, %1, lsl %5 \n"
: "=r"(res_hi), "=r"(res_low) \
: "r"(a), "r"(b), "i"(COGL_FIXED_Q), "i"(32 - COGL_FIXED_Q));
return (CoglFixed) res_low;
#else
gint64 r = (gint64) a * (gint64) b;
return (CoglFixed) (r >> COGL_FIXED_Q);
#endif
}
CoglFixed
cogl_fixed_div (CoglFixed a,
CoglFixed b)
{
return (CoglFixed) ((((gint64) a) << COGL_FIXED_Q) / b);
}
CoglFixed
cogl_fixed_mul_div (CoglFixed a,
CoglFixed b,
CoglFixed c)
{
CoglFixed ab = cogl_fixed_mul (a, b);
CoglFixed quo = cogl_fixed_div (ab, c);
return quo;
}
/*
* The log2x() and pow2x() functions
*
* The implementation of the log2x() and pow2x() exploits the
* well-documented fact that the exponent part of IEEE floating
* number provides a good estimate of log2 of that number, while
* the mantissa serves as a good error-correction.
*
* The implementation here uses a quadratic error correction as
* described by Ian Stephenson at:
* http://www.dctsystems.co.uk/Software/power.html.
*/
CoglFixed
cogl_fixed_log2 (unsigned int x)
{
/* Note: we could easily have a version for CoglFixed x, but the int
* precision is enough for the current purposes.
*/
union
{
float f;
CoglFixed i;
} flt;
CoglFixed magic = 0x58bb;
CoglFixed y;
/*
* Convert x to float, then extract exponent.
*
* We want the result to be 16.16 fixed, so we shift (23-16) bits only
*/
flt.f = x;
flt.i >>= 7;
flt.i -= COGL_FIXED_FROM_INT (127);
y = COGL_FIXED_FRACTION (flt.i);
y = COGL_FIXED_MUL ((y - COGL_FIXED_MUL (y, y)), magic);
return flt.i + y;
}
unsigned int
cogl_fixed_pow2 (CoglFixed x)
{
/* Note: we could easily have a version that produces CoglFixed result,
* but the range would be limited to x < 15, and the int precision
* is enough for the current purposes.
*/
union
{
float f;
guint32 i;
} flt;
CoglFixed magic = 0x56f7;
CoglFixed y;
flt.i = x;
/*
* Reverse of the log2x function -- convert the fixed value to a suitable
* floating point exponent, and mantisa adjusted with quadratic error
* correction y.
*/
y = COGL_FIXED_FRACTION (x);
y = COGL_FIXED_MUL ((y - COGL_FIXED_MUL (y, y)), magic);
/* Shift the exponent into it's position in the floating point
* representation; as our number is not int but 16.16 fixed, shift only
* by (23 - 16)
*/
flt.i += (COGL_FIXED_FROM_INT (127) - y);
flt.i <<= 7;
return COGL_FLOAT_TO_UINT (flt.f);
}
unsigned int
cogl_fixed_pow (unsigned int x,
CoglFixed y)
{
return cogl_fixed_pow2 (COGL_FIXED_MUL (y, cogl_fixed_log2 (x)));
}
CoglFixed
cogl_angle_cos (CoglAngle angle)
{
CoglAngle a = angle + 256;
return cogl_angle_sin (a);
}
CoglFixed
cogl_fixed_cos (CoglFixed angle)
{
CoglFixed a = angle + COGL_FIXED_PI_2;
return cogl_fixed_sin (a);
}

804
clutter/cogl/cogl/cogl-fixed.h
View File

@ -1,804 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_FIXED_H__
#define __COGL_FIXED_H__
#include <cogl/cogl-types.h>
/**
* SECTION:cogl-fixed
* @short_description: Fixed Point API
*
* COGL has a fixed point API targeted at platforms without a floating
* point unit, such as embedded devices. On such platforms this API should
* be preferred to the floating point one as it does not trigger the slow
* path of software emulation, relying on integer math for fixed-to-floating
* and floating-to-fixed notations conversion.
*
* It is not recommened for use on platforms with a floating point unit
* (e.g. desktop systems), nor for use in language bindings.
*
* Basic rules of Fixed Point arithmethic:
* <itemizedlist>
* <listitem>
* <para>Two fixed point numbers can be directly added, subtracted and
* have their modulus taken.</para>
* </listitem>
* <listitem>
* <para>To add other numerical type to a fixed point number it has to
* be first converted to fixed point.</para>
* </listitem>
* <listitem>
* <para>A fixed point number can be directly multiplied or divided by
* an integer.</para>
* </listitem>
* <listitem>
* <para>Two fixed point numbers can only be multiplied and divided by
* the provided %COGL_FIXED_MUL and %COGL_FIXED_DIV macros.</para>
* </listitem>
* </itemizedlist>
*
* The fixed point API is available since COGL 1.0.
*/
G_BEGIN_DECLS
/**
* COGL_FIXED_BITS:
*
* Evaluates to the number of bits used by the #CoglFixed type.
*
* Since: 1.0
*/
#define COGL_FIXED_BITS (32)
/**
* COGL_FIXED_Q:
*
* Evaluates to the number of bits used for the non-integer part
* of the #CoglFixed type.
*
* Since: 1.0
*/
#define COGL_FIXED_Q (COGL_FIXED_BITS - 16)
/**
* COGL_FIXED_1:
*
* The number 1 expressed as a #CoglFixed number.
*
* Since: 1.0
*/
#define COGL_FIXED_1 (1 << COGL_FIXED_Q)
/**
* COGL_FIXED_0_5:
*
* The number 0.5 expressed as a #CoglFixed number.
*
* Since: 1.0
*/
#define COGL_FIXED_0_5 (32768)
/**
* COGL_FIXED_EPSILON:
*
* A very small number expressed as a #CoglFixed number.
*
* Since: 1.0
*/
#define COGL_FIXED_EPSILON (1)
/**
* COGL_FIXED_MAX:
*
* The biggest number representable using #CoglFixed
*
* Since: 1.0
*/
#define COGL_FIXED_MAX (0x7fffffff)
/**
* COGL_FIXED_MIN:
*
* The smallest number representable using #CoglFixed
*
* Since: 1.0
*/
#define COGL_FIXED_MIN (0x80000000)
/**
* COGL_FIXED_PI:
*
* The number pi, expressed as a #CoglFixed number.
*
* Since: 1.0
*/
#define COGL_FIXED_PI (0x0003243f)
/**
* COGL_FIXED_2_PI:
*
* Two times pi, expressed as a #CoglFixed number.
*
* Since: 1.0
*/
#define COGL_FIXED_2_PI (0x0006487f)
/**
* COGL_FIXED_PI_2:
*
* Half pi, expressed as a #CoglFixed number.
*
* Since: 1.0
*/
#define COGL_FIXED_PI_2 (0x00019220)
/**
* COGL_FIXED_PI_4:
*
* pi / 4, expressed as #CoglFixed number.
*
* Since: 1.0
*/
#define COGL_FIXED_PI_4 (0x0000c910)
/**
* COGL_FIXED_360:
*
* Evaluates to the number 360 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_360 (COGL_FIXED_FROM_INT (360))
/**
* COGL_FIXED_270:
*
* Evaluates to the number 270 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_270 (COGL_FIXED_FROM_INT (270))
/**
* COGL_FIXED_255:
*
* Evaluates to the number 255 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_255 (COGL_FIXED_FROM_INT (255))
/**
* COGL_FIXED_240:
*
* Evaluates to the number 240 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_240 (COGL_FIXED_FROM_INT (240))
/**
* COGL_FIXED_180:
*
* Evaluates to the number 180 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_180 (COGL_FIXED_FROM_INT (180))
/**
* COGL_FIXED_120:
*
* Evaluates to the number 120 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_120 (COGL_FIXED_FROM_INT (120))
/**
* COGL_FIXED_90:
*
* Evaluates to the number 90 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_90 (COGL_FIXED_FROM_INT (90))
/**
* COGL_FIXED_60:
*
* Evaluates to the number 60 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_60 (COGL_FIXED_FROM_INT (60))
/**
* COGL_FIXED_45:
*
* Evaluates to the number 45 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_45 (COGL_FIXED_FROM_INT (45))
/**
* COGL_FIXED_30:
*
* Evaluates to the number 30 in fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_30 (COGL_FIXED_FROM_INT (30))
/**
* COGL_RADIANS_TO_DEGREES:
*
* Evaluates to 180 / pi in fixed point notation.
*
* Since: 1.0
*/
#define COGL_RADIANS_TO_DEGREES (0x394bb8)
/*
* conversion macros
*/
/**
* COGL_FIXED_FROM_FLOAT:
* @x: a floating point number
*
* Converts @x from a floating point to a fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_FROM_FLOAT(x) ((float) cogl_double_to_fixed (x))
/**
* COGL_FIXED_TO_FLOAT:
* @x: a #CoglFixed number
*
* Converts @x from a fixed point to a floating point notation, in
* single precision.
*
* Since: 1.0
*/
#define COGL_FIXED_TO_FLOAT(x) ((float) ((int)(x) / 65536.0))
/**
* COGL_FIXED_FROM_DOUBLE:
* @x: a floating point number
*
* Converts @x from a double precision, floating point to a fixed
* point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_FROM_DOUBLE(x) (cogl_double_to_fixed (x))
/**
* COGL_FIXED_TO_DOUBLE:
* @x: a #CoglFixed number
*
* Converts @x from a fixed point to a floating point notation, in
* double precision.
*
* Since: 1.0
*/
#define COGL_FIXED_TO_DOUBLE(x) ((double) ((int)(x) / 65536.0))
/**
* COGL_FIXED_FROM_INT:
* @x: an integer number
*
* Converts @x from an integer to a fixed point notation.
*
* Since: 1.0
*/
#define COGL_FIXED_FROM_INT(x) ((x) << COGL_FIXED_Q)
/**
* COGL_FIXED_TO_INT:
* @x: a #CoglFixed number
*
* Converts @x from a fixed point notation to an integer, dropping
* the fractional part without rounding.
*
* Since: 1.0
*/
#define COGL_FIXED_TO_INT(x) ((x) >> COGL_FIXED_Q)
/**
* COGL_FLOAT_TO_INT:
* @x: a floatint point number
*
* Converts @x from a floating point notation to a signed integer.
*
* Since: 1.0
*/
#define COGL_FLOAT_TO_INT(x) (cogl_double_to_int ((x)))
/**
* COGL_FLOAT_TO_UINT:
* @x: a floatint point number
*
* Converts @x from a floating point notation to an unsigned integer.
*
* Since: 1.0
*/
#define COGL_FLOAT_TO_UINT(x) (cogl_double_to_uint ((x)))
/*
* fixed point math functions
*/
/**
* COGL_FIXED_FRACTION:
* @x: a #CoglFixed number
*
* Retrieves the fractionary part of @x.
*
* Since: 1.0
*/
#define COGL_FIXED_FRACTION(x) ((x) & ((1 << COGL_FIXED_Q) - 1))
/**
* COGL_FIXED_FLOOR:
* @x: a #CoglFixed number
*
* Rounds down a fixed point number to the previous integer.
*
* Since: 1.0
*/
#define COGL_FIXED_FLOOR(x) (((x) >= 0) ? ((x) >> COGL_FIXED_Q) \
: ~((~(x)) >> COGL_FIXED_Q))
/**
* COGL_FIXED_CEIL:
* @x: a #CoglFixed number
*
* Rounds up a fixed point number to the next integer.
*
* Since: 1.0
*/
#define COGL_FIXED_CEIL(x) (COGL_FIXED_FLOOR ((x) + 0xffff))
/**
* COGL_FIXED_MUL:
* @a: a #CoglFixed number
* @b: a #CoglFixed number
*
* Computes (a * b).
*
* Since: 1.0
*/
#define COGL_FIXED_MUL(a,b) (cogl_fixed_mul ((a), (b)))
/**
* COGL_FIXED_DIV:
* @a: a #CoglFixed number
* @b: a #CoglFixed number
*
* Computes (a / b).
*
* Since: 1.0
*/
#define COGL_FIXED_DIV(a,b) (cogl_fixed_div ((a), (b)))
/**
* COGL_FIXED_MUL_DIV:
* @a: a #CoglFixed number
* @b: a #CoglFixed number
* @c: a #CoglFixed number
*
* Computes ((a * b) / c). It is logically equivalent to:
*
* |[
* res = COGL_FIXED_DIV (COGL_FIXED_MUL (a, b), c);
* ]|
*
* But it is shorter to type.
*
* Since: 1.0
*/
#define COGL_FIXED_MUL_DIV(a,b,c) (cogl_fixed_mul_div ((a), (b), (c)))
/**
* COGL_FIXED_FAST_MUL:
* @a: a #CoglFixed number
* @b: a #CoglFixed number
*
* Fast version of %COGL_FIXED_MUL, implemented as a macro.
*
* <note>This macro might lose precision. If the precision of the result
* is important use %COGL_FIXED_MUL instead.</note>
*
* Since: 1.0
*/
#define COGL_FIXED_FAST_MUL(a,b) ((a) >> 8) * ((b) >> 8)
/**
* COGL_FIXED_FAST_DIV:
* @a: a #CoglFixed number
* @b: a #CoglFixed number
*
* Fast version of %COGL_FIXED_DIV, implemented as a macro.
*
* <note>This macro might lose precision. If the precision of the result
* is important use %COGL_FIXED_DIV instead.</note>
*
* Since: 1.0
*/
#define COGL_FIXED_FAST_DIV(a,b) ((((a) << 8) / (b)) << 8)
/**
* cogl_fixed_sin:
* @angle: a #CoglFixed number
*
* Computes the sine of @angle.
*
* Return value: the sine of the passed angle, in fixed point notation
*
* Since: 1.0
*/
CoglFixed
cogl_fixed_sin (CoglFixed angle);
/**
* cogl_fixed_tan:
* @angle: a #CoglFixed number
*
* Computes the tangent of @angle.
*
* Return value: the tangent of the passed angle, in fixed point notation
*
* Since: 1.0
*/
CoglFixed
cogl_fixed_tan (CoglFixed angle);
/**
* cogl_fixed_cos:
* @angle: a #CoglFixed number
*
* Computes the cosine of @angle.
*
* Return value: the cosine of the passed angle, in fixed point notation
*
* Since: 1.0
*/
CoglFixed cogl_fixed_cos (CoglFixed angle);
/**
* cogl_fixed_atan:
* @a: a #CoglFixed number
*
* Computes the arc tangent of @a.
*
* Return value: the arc tangent of the passed value, in fixed point notation
*
* Since: 1.0
*/
CoglFixed
cogl_fixed_atan (CoglFixed a);
/**
* cogl_fixed_atan2:
* @a: the numerator as a #CoglFixed number
* @b: the denominator as a #CoglFixed number
*
* Computes the arc tangent of @a / @b but uses the sign of both
* arguments to return the angle in right quadrant.
*
* Return value: the arc tangent of the passed fraction, in fixed point
* notation
*
* Since: 1.0
*/
CoglFixed
cogl_fixed_atan2 (CoglFixed a,
CoglFixed b);
/*< public >*/
/* Fixed point math routines */
G_INLINE_FUNC CoglFixed
cogl_fixed_mul (CoglFixed a,
CoglFixed b);
G_INLINE_FUNC CoglFixed
cogl_fixed_div (CoglFixed a,
CoglFixed b);
G_INLINE_FUNC CoglFixed
cogl_fixed_mul_div (CoglFixed a,
CoglFixed b,
CoglFixed c);
/**
* COGL_SQRTI_ARG_MAX:
*
* Maximum argument that can be passed to cogl_sqrti() function.
*
* Since: 1.0
*/
#ifndef __SSE2__
#define COGL_SQRTI_ARG_MAX 0x3fffff
#else
#define COGL_SQRTI_ARG_MAX INT_MAX
#endif
/**
* COGL_SQRTI_ARG_5_PERCENT:
*
* Maximum argument that can be passed to cogl_sqrti() for which the
* resulting error is < 5%
*
* Since: 1.0
*/
#ifndef __SSE2__
#define COGL_SQRTI_ARG_5_PERCENT 210
#else
#define COGL_SQRTI_ARG_5_PERCENT INT_MAX
#endif
/**
* COGL_SQRTI_ARG_10_PERCENT:
*
* Maximum argument that can be passed to cogl_sqrti() for which the
* resulting error is < 10%
*
* Since: 1.0
*/
#ifndef __SSE2__
#define COGL_SQRTI_ARG_10_PERCENT 5590
#else
#define COGL_SQRTI_ARG_10_PERCENT INT_MAX
#endif
/**
* cogl_fixed_sqrt:
* @x: a #CoglFixed number
*
* Computes the square root of @x.
*
* Return value: the square root of the passed value, in floating point
* notation
*
* Since: 1.0
*/
CoglFixed
cogl_fixed_sqrt (CoglFixed x);
/**
* cogl_fixed_log2:
* @x: value to calculate base 2 logarithm from
*
* Calculates base 2 logarithm.
*
* This function is some 2.5 times faster on x86, and over 12 times faster on
* fpu-less arm, than using libc log().
*
* Return value: base 2 logarithm.
*
* Since: 1.0
*/
CoglFixed
cogl_fixed_log2 (unsigned int x);
/**
* cogl_fixed_pow2:
* @x: a #CoglFixed number
*
* Calculates 2 to the @x power.
*
* This function is around 11 times faster on x86, and around 22 times faster
* on fpu-less arm than libc pow(2, x).
*
* Return value: the power of 2 to the passed value
*
* Since: 1.0
*/
unsigned int
cogl_fixed_pow2 (CoglFixed x);
/**
* cogl_fixed_pow:
* @x: base
* @y: #CoglFixed exponent
*
* Calculates @x to the @y power.
*
* Return value: the power of @x to the @y
*
* Since: 1.0
*/
unsigned int
cogl_fixed_pow (unsigned int x,
CoglFixed y);
/**
* cogl_sqrti:
* @x: integer value
*
* Very fast fixed point implementation of square root for integers.
*
* This function is at least 6x faster than clib sqrt() on x86, and (this is
* not a typo!) about 500x faster on ARM without FPU. It's error is less than
* 5% for arguments smaller than %COGL_SQRTI_ARG_5_PERCENT and less than 10%
* for narguments smaller than %COGL_SQRTI_ARG_10_PERCENT. The maximum
* argument that can be passed to this function is %COGL_SQRTI_ARG_MAX.
*
* Return value: integer square root.
*
* Since: 1.0
*/
int
cogl_sqrti (int x);
/**
* COGL_ANGLE_FROM_DEG:
* @x: an angle in degrees in floating point notation
*
* Converts an angle in degrees into a #CoglAngle.
*
* Since: 1.0
*/
#define COGL_ANGLE_FROM_DEG(x) (COGL_FLOAT_TO_INT (((float)(x) * 1024.0f) / 360.0f))
/**
* COGL_ANGLE_TO_DEG:
* @x: a #CoglAngle
*
* Converts a #CoglAngle into an angle in degrees, using floatint point
* notation.
*
* Since: 1.0
*/
#define COGL_ANGLE_TO_DEG(x) (((float)(x) * 360.0) / 1024.0)
/**
* COGL_ANGLE_FROM_DEGX:
* @x: an angle in degrees in fixed point notation
*
* Converts an angle in degrees into a #CoglAngle.
*
* Since: 1.0
*/
#define COGL_ANGLE_FROM_DEGX(x) (COGL_FIXED_TO_INT ((((x) / 360) * 1024) + COGL_FIXED_0_5))
/**
* COGL_ANGLE_TO_DEGX:
* @x: a #CoglAngle
*
* Converts a #CoglAngle into an angle in degrees, using fixed point notation
*
* Since: 1.0
*/
#define COGL_ANGLE_TO_DEGX(x) (COGL_FIXED_FROM_INT ((x) * 45) / 128)
/**
* cogl_angle_sin:
* @angle: an angle expressed using #CoglAngle
*
* Computes the sine of @angle
*
* Return value: the sine of the passed angle
*
* Since: 1.0
*/
CoglFixed
cogl_angle_sin (CoglAngle angle);
/**
* cogl_angle_tan:
* @angle: an angle expressed using #CoglAngle
*
* Computes the tangent of @angle
*
* Return value: the tangent of the passed angle
*
* Since: 1.0
*/
CoglFixed
cogl_angle_tan (CoglAngle angle);
/**
* cogl_angle_cos:
* @angle: an angle expressed using #CoglAngle
*
* Computes the cosine of @angle
*
* Return value: the cosine of the passed angle
*
* Since: 1.0
*/
CoglFixed
cogl_angle_cos (CoglAngle angle);
/*< private >*/
#if defined (G_CAN_INLINE)
G_INLINE_FUNC CoglFixed
cogl_fixed_mul (CoglFixed a,
CoglFixed b)
{
# ifdef __arm__
int res_low, res_hi;
__asm__ ("smull %0, %1, %2, %3 \n"
"mov %0, %0, lsr %4 \n"
"add %1, %0, %1, lsl %5 \n"
: "=r"(res_hi), "=r"(res_low)\
: "r"(a), "r"(b), "i"(COGL_FIXED_Q), "i"(32 - COGL_FIXED_Q));
return (CoglFixed) res_low;
# else
long long r = (long long) a * (long long) b;
return (unsigned int)(r >> COGL_FIXED_Q);
# endif
}
#endif
#if defined (G_CAN_INLINE)
G_INLINE_FUNC CoglFixed
cogl_fixed_div (CoglFixed a,
CoglFixed b)
{
return (CoglFixed) ((((gint64) a) << COGL_FIXED_Q) / b);
}
#endif
#if defined(G_CAN_INLINE)
G_INLINE_FUNC CoglFixed
cogl_fixed_mul_div (CoglFixed a,
CoglFixed b,
CoglFixed c)
{
CoglFixed ab = cogl_fixed_mul (a, b);
CoglFixed quo = cogl_fixed_div (ab, c);
return quo;
}
#endif
CoglFixed
cogl_double_to_fixed (double value);
int
cogl_double_to_int (double value);
unsigned int
cogl_double_to_uint (double value);
G_END_DECLS
#endif /* __COGL_FIXED_H__ */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifndef __COGL_FLAGS_H
#define __COGL_FLAGS_H
#include <glib.h>
G_BEGIN_DECLS
/* These are macros used to implement a fixed-size array of bits. This
should be used instead of CoglBitmask when the maximum bit number
that will be set is known at compile time, for example when setting
for recording a set of known available features */
/* The bits are stored in an array of unsigned ints. It would probably
make sense to use unsigned long instead because then on 64-bit
systems where it can handle 64-bits just as easily and it can test
more bits. However GDebugKey uses a guint for the mask and we need
to fit the masks into this */
/* To use these macros, you would typically have an enum defining the
available bits with an extra last enum to define the maximum
value. Then to store the flags you would declare an array of
unsigned ints sized using COGL_FLAGS_N_INTS_FOR_SIZE, eg:
typedef enum { FEATURE_A, FEATURE_B, FEATURE_C, N_FEATURES } Features;
unsigned int feature_flags[COGL_FLAGS_N_INTS_FOR_SIZE (N_FEATURES)];
*/
#define COGL_FLAGS_N_INTS_FOR_SIZE(size) \
(((size) + \
(sizeof (unsigned int) * 8 - 1)) \
/ (sizeof (unsigned int) * 8))
/* @flag is expected to be constant so these should result in a
constant expression. This means that setting a flag is equivalent
to just setting in a bit in a global variable at a known
location */
#define COGL_FLAGS_GET_INDEX(flag) \
((flag) / (sizeof (unsigned int) * 8))
#define COGL_FLAGS_GET_MASK(flag) \
(1U << ((unsigned int) (flag) & \
(sizeof (unsigned int) * 8 - 1)))
#define COGL_FLAGS_GET(array, flag) \
(!!((array)[COGL_FLAGS_GET_INDEX (flag)] & \
COGL_FLAGS_GET_MASK (flag)))
/* The expectation here is that @value will be constant so the if
statement will be optimised out */
#define COGL_FLAGS_SET(array, flag, value) \
G_STMT_START { \
if (value) \
((array)[COGL_FLAGS_GET_INDEX (flag)] |= \
COGL_FLAGS_GET_MASK (flag)); \
else \
((array)[COGL_FLAGS_GET_INDEX (flag)] &= \
~COGL_FLAGS_GET_MASK (flag)); \
} G_STMT_END
G_END_DECLS
#endif /* __COGL_FLAGS_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_FRAMEBUFFER_PRIVATE_H
#define __COGL_FRAMEBUFFER_PRIVATE_H
#include "cogl-object-private.h"
#include "cogl-matrix-stack.h"
#include "cogl-clip-state-private.h"
#include "cogl-journal-private.h"
#ifdef COGL_HAS_XLIB_SUPPORT
#include <X11/Xlib.h>
#endif
#ifdef COGL_HAS_GLX_SUPPORT
#include <GL/glx.h>
#include <GL/glxext.h>
#endif
typedef enum _CoglFramebufferType {
COGL_FRAMEBUFFER_TYPE_ONSCREEN,
COGL_FRAMEBUFFER_TYPE_OFFSCREEN
} CoglFramebufferType;
struct _CoglFramebuffer
{
CoglObject _parent;
CoglContext *context;
CoglFramebufferType type;
int width;
int height;
/* Format of the pixels in the framebuffer (including the expected
premult state) */
CoglPixelFormat format;
gboolean allocated;
CoglMatrixStack *modelview_stack;
CoglMatrixStack *projection_stack;
float viewport_x;
float viewport_y;
float viewport_width;
float viewport_height;
CoglClipState clip_state;
gboolean dirty_bitmasks;
int red_bits;
int blue_bits;
int green_bits;
int alpha_bits;
/* We journal the textured rectangles we want to submit to OpenGL so
* we have an oppertunity to batch them together into less draw
* calls. */
CoglJournal *journal;
/* The scene of a given framebuffer may depend on images in other
* framebuffers... */
GList *deps;
/* As part of an optimization for reading-back single pixels from a
* framebuffer in some simple cases where the geometry is still
* available in the journal we need to track the bounds of the last
* region cleared, its color and we need to track when something
* does in fact draw to that region so it is no longer clear.
*/
float clear_color_red;
float clear_color_green;
float clear_color_blue;
float clear_color_alpha;
int clear_clip_x0;
int clear_clip_y0;
int clear_clip_x1;
int clear_clip_y1;
gboolean clear_clip_dirty;
};
typedef struct _CoglOffscreen
{
CoglFramebuffer _parent;
GLuint fbo_handle;
GSList *renderbuffers;
CoglHandle texture;
} CoglOffscreen;
/* Flags to pass to _cogl_offscreen_new_to_texture_full */
typedef enum
{
COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL = 1
} CoglOffscreenFlags;
#define COGL_OFFSCREEN(X) ((CoglOffscreen *)(X))
struct _CoglOnscreen
{
CoglFramebuffer _parent;
#ifdef COGL_HAS_X11_SUPPORT
guint32 foreign_xid;
CoglOnscreenX11MaskCallback foreign_update_mask_callback;
void *foreign_update_mask_data;
#endif
gboolean swap_throttled;
void *winsys;
};
void
_cogl_framebuffer_state_init (void);
void
_cogl_framebuffer_winsys_update_size (CoglFramebuffer *framebuffer,
int width, int height);
void
_cogl_clear4f (unsigned long buffers,
float red,
float green,
float blue,
float alpha);
void
_cogl_framebuffer_clear (CoglFramebuffer *framebuffer,
unsigned long buffers,
const CoglColor *color);
void
_cogl_framebuffer_clear4f (CoglFramebuffer *framebuffer,
unsigned long buffers,
float red,
float green,
float blue,
float alpha);
void
_cogl_framebuffer_dirty (CoglFramebuffer *framebuffer);
CoglClipState *
_cogl_framebuffer_get_clip_state (CoglFramebuffer *framebuffer);
/*
* _cogl_framebuffer_get_clip_stack:
* @framebuffer: A #CoglFramebuffer
*
* Gets a pointer to the current clip stack. This can be used to later
* return to the same clip stack state with
* _cogl_framebuffer_set_clip_stack(). A reference is not taken on the
* stack so if you want to keep it you should call
* _cogl_clip_stack_ref().
*
* Return value: a pointer to the @framebuffer clip stack.
*/
CoglClipStack *
_cogl_framebuffer_get_clip_stack (CoglFramebuffer *framebuffer);
/*
* _cogl_framebuffer_set_clip_stack:
* @framebuffer: A #CoglFramebuffer
* @stack: a pointer to the replacement clip stack
*
* Replaces the @framebuffer clip stack with @stack.
*/
void
_cogl_framebuffer_set_clip_stack (CoglFramebuffer *framebuffer,
CoglClipStack *stack);
void
_cogl_framebuffer_set_viewport (CoglFramebuffer *framebuffer,
float x,
float y,
float width,
float height);
float
_cogl_framebuffer_get_viewport_x (CoglFramebuffer *framebuffer);
float
_cogl_framebuffer_get_viewport_y (CoglFramebuffer *framebuffer);
float
_cogl_framebuffer_get_viewport_width (CoglFramebuffer *framebuffer);
float
_cogl_framebuffer_get_viewport_height (CoglFramebuffer *framebuffer);
void
_cogl_framebuffer_get_viewport4fv (CoglFramebuffer *framebuffer,
float *viewport);
CoglMatrixStack *
_cogl_framebuffer_get_modelview_stack (CoglFramebuffer *framebuffer);
CoglMatrixStack *
_cogl_framebuffer_get_projection_stack (CoglFramebuffer *framebuffer);
void
_cogl_framebuffer_add_dependency (CoglFramebuffer *framebuffer,
CoglFramebuffer *dependency);
void
_cogl_framebuffer_remove_all_dependencies (CoglFramebuffer *framebuffer);
void
_cogl_framebuffer_flush_journal (CoglFramebuffer *framebuffer);
void
_cogl_framebuffer_flush_dependency_journals (CoglFramebuffer *framebuffer);
gboolean
_cogl_framebuffer_try_fast_read_pixel (CoglFramebuffer *framebuffer,
int x,
int y,
CoglReadPixelsFlags source,
CoglPixelFormat format,
guint8 *pixel);
typedef enum _CoglFramebufferFlushFlags
{
/* XXX: When using this, that imples you are going to manually load the
* modelview matrix (via glLoadMatrix). _cogl_matrix_stack_flush_to_gl wont
* be called for framebuffer->modelview_stack, and the modelview_stack will
* also be marked as dirty. */
COGL_FRAMEBUFFER_FLUSH_SKIP_MODELVIEW = 1L<<0,
/* Similarly this flag implies you are going to flush the clip state
yourself */
COGL_FRAMEBUFFER_FLUSH_SKIP_CLIP_STATE = 1L<<1,
/* When using this all that will be updated is the glBindFramebuffer
* state and corresponding winsys state to make the framebuffer
* current if it is a CoglOnscreen framebuffer. */
COGL_FRAMEBUFFER_FLUSH_BIND_ONLY = 1L<<2
} CoglFramebufferFlushFlags;
void
_cogl_framebuffer_flush_state (CoglFramebuffer *draw_buffer,
CoglFramebuffer *read_buffer,
CoglFramebufferFlushFlags flags);
CoglFramebuffer *
_cogl_get_read_framebuffer (void);
GSList *
_cogl_create_framebuffer_stack (void);
void
_cogl_free_framebuffer_stack (GSList *stack);
/*
* _cogl_offscreen_new_to_texture_full:
* @texhandle: A handle to the texture to target
* @create_flags: Flags specifying how to create the FBO
* @level: The mipmap level within the texture to target
*
* Creates a new offscreen buffer which will target the given
* texture. By default the buffer will have a depth and stencil
* buffer. This can be disabled by passing
* %COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL in @create_flags.
*
* Return value: the new CoglOffscreen object.
*/
CoglHandle
_cogl_offscreen_new_to_texture_full (CoglHandle texhandle,
CoglOffscreenFlags create_flags,
unsigned int level);
/*
* _cogl_push_framebuffers:
* @draw_buffer: A pointer to the buffer used for drawing
* @read_buffer: A pointer to the buffer used for reading back pixels
*
* Redirects drawing and reading to the specified framebuffers as in
* cogl_push_framebuffer() except that it allows the draw and read
* buffer to be different. The buffers are pushed as a pair so that
* they can later both be restored with a single call to
* cogl_pop_framebuffer().
*/
void
_cogl_push_framebuffers (CoglFramebuffer *draw_buffer,
CoglFramebuffer *read_buffer);
/*
* _cogl_blit_framebuffer:
* @src_x: Source x position
* @src_y: Source y position
* @dst_x: Destination x position
* @dst_y: Destination y position
* @width: Width of region to copy
* @height: Height of region to copy
*
* This blits a region of the color buffer of the current draw buffer
* to the current read buffer. The draw and read buffers can be set up
* using _cogl_push_framebuffers(). This function should only be
* called if the COGL_FEATURE_OFFSCREEN_BLIT feature is
* advertised. The two buffers must both be offscreen and have the
* same format.
*
* Note that this function differs a lot from the glBlitFramebuffer
* function provided by the GL_EXT_framebuffer_blit extension. Notably
* it doesn't support having different sizes for the source and
* destination rectangle. This isn't supported by the corresponding
* GL_ANGLE_framebuffer_blit extension on GLES2.0 and it doesn't seem
* like a particularly useful feature. If the application wanted to
* scale the results it may make more sense to draw a primitive
* instead.
*
* We can only really support blitting between two offscreen buffers
* for this function on GLES2.0. This is because we effectively render
* upside down to offscreen buffers to maintain Cogl's representation
* of the texture coordinate system where 0,0 is the top left of the
* texture. If we were to blit from an offscreen to an onscreen buffer
* then we would need to mirror the blit along the x-axis but the GLES
* extension does not support this.
*
* The GL function is documented to be affected by the scissor. This
* function therefore ensure that an empty clip stack is flushed
* before performing the blit which means the scissor is effectively
* ignored.
*
* The function also doesn't support specifying the buffers to copy
* and instead only the color buffer is copied. When copying the depth
* or stencil buffers the extension on GLES2.0 only supports copying
* the full buffer which would be awkward to document with this
* API. If we wanted to support that feature it may be better to have
* a separate function to copy the entire buffer for a given mask.
*/
void
_cogl_blit_framebuffer (unsigned int src_x,
unsigned int src_y,
unsigned int dst_x,
unsigned int dst_y,
unsigned int width,
unsigned int height);
CoglOnscreen *
_cogl_onscreen_new (void);
#endif /* __COGL_FRAMEBUFFER_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_FRAMEBUFFER_H
#define __COGL_FRAMEBUFFER_H
#include <glib.h>
G_BEGIN_DECLS
#ifdef COGL_ENABLE_EXPERIMENTAL_API
#define cogl_onscreen_new cogl_onscreen_new_EXP
#define COGL_FRAMEBUFFER(X) ((CoglFramebuffer *)(X))
#define cogl_framebuffer_allocate cogl_framebuffer_allocate_EXP
gboolean
cogl_framebuffer_allocate (CoglFramebuffer *framebuffer,
GError **error);
#define cogl_framebuffer_get_width cogl_framebuffer_get_width_EXP
int
cogl_framebuffer_get_width (CoglFramebuffer *framebuffer);
#define cogl_framebuffer_get_height cogl_framebuffer_get_height_EXP
int
cogl_framebuffer_get_height (CoglFramebuffer *framebuffer);
#define cogl_framebuffer_swap_buffers cogl_framebuffer_swap_buffers_EXP
void
cogl_framebuffer_swap_buffers (CoglFramebuffer *framebuffer);
#define cogl_framebuffer_swap_region cogl_framebuffer_swap_region_EXP
void
cogl_framebuffer_swap_region (CoglFramebuffer *framebuffer,
int *rectangles,
int n_rectangles);
typedef void (*CoglSwapBuffersNotify) (CoglFramebuffer *framebuffer,
void *user_data);
#define cogl_framebuffer_add_swap_buffers_callback \
cogl_framebuffer_add_swap_buffers_callback_EXP
unsigned int
cogl_framebuffer_add_swap_buffers_callback (CoglFramebuffer *framebuffer,
CoglSwapBuffersNotify callback,
void *user_data);
#define cogl_framebuffer_remove_swap_buffers_callback \
cogl_framebuffer_remove_swap_buffers_callback_EXP
void
cogl_framebuffer_remove_swap_buffers_callback (CoglFramebuffer *framebuffer,
unsigned int id);
typedef struct _CoglOnscreen CoglOnscreen;
#define COGL_ONSCREEN(X) ((CoglOnscreen *)(X))
CoglOnscreen *
cogl_onscreen_new (CoglContext *context, int width, int height);
#ifdef COGL_HAS_X11
typedef void (*CoglOnscreenX11MaskCallback) (CoglOnscreen *onscreen,
guint32 event_mask,
void *user_data);
/**
* cogl_onscreen_x11_set_foreign_window_xid:
* @onscreen: The unallocated framebuffer to associated with an X
* window.
* @xid: The XID of an existing X window
* @update: A callback that notifies of updates to what Cogl requires
* to be in the core X protocol event mask.
*
* Ideally we would recommend that you let Cogl be responsible for
* creating any X window required to back an onscreen framebuffer but
* if you really need to target a window created manually this
* function can be called before @onscreen has been allocated to set a
* foreign XID for your existing X window.
*
* Since Cogl needs, for example, to track changes to the size of an X
* window it requires that certain events be selected for via the core
* X protocol. This requirement may also be changed asynchronously so
* you must pass in an @update callback to inform you of Cogl's
* required event mask.
*
* For example if you are using Xlib you could use this API roughly
* as follows:
* [{
* static void
* my_update_cogl_x11_event_mask (CoglOnscreen *onscreen,
* guint32 event_mask,
* void *user_data)
* {
* XSetWindowAttributes attrs;
* MyData *data = user_data;
* attrs.event_mask = event_mask | data->my_event_mask;
* XChangeWindowAttributes (data->xdpy,
* data->xwin,
* CWEventMask,
* &attrs);
* }
*
* {
* *snip*
* cogl_onscreen_x11_set_foreign_window_xid (onscreen,
* data->xwin,
* my_update_cogl_x11_event_mask,
* data);
* *snip*
* }
* }]
*
* Since: 2.0
* Stability: Unstable
*/
#define cogl_onscreen_x11_set_foreign_window_xid \
cogl_onscreen_x11_set_foreign_window_xid_EXP
void
cogl_onscreen_x11_set_foreign_window_xid (CoglOnscreen *onscreen,
guint32 xid,
CoglOnscreenX11MaskCallback update,
void *user_data);
#define cogl_onscreen_x11_get_window_xid cogl_onscreen_x11_get_window_xid_EXP
guint32
cogl_onscreen_x11_get_window_xid (CoglOnscreen *onscreen);
#define cogl_onscreen_x11_get_visual_xid cogl_onscreen_x11_get_visual_xid_EXP
guint32
cogl_onscreen_x11_get_visual_xid (CoglOnscreen *onscreen);
#endif /* COGL_HAS_X11 */
#define cogl_onscreen_set_swap_throttled cogl_onscreen_set_swap_throttled_EXP
void
cogl_onscreen_set_swap_throttled (CoglOnscreen *onscreen,
gboolean throttled);
/**
* cogl_onscreen_show:
* @onscreen: The onscreen framebuffer to make visible
*
* This requests to make @onscreen visible to the user.
*
* Actually the precise semantics of this function depend on the
* window system currently in use, and if you don't have a
* multi-windowining system this function may in-fact do nothing.
*
* This function will implicitly allocate the given @onscreen
* framebuffer before showing it if it hasn't already been allocated.
*
* <note>Since Cogl doesn't explicitly track the visibility status of
* onscreen framebuffers it wont try to avoid redundant window system
* requests e.g. to show an already visible window. This also means
* that it's acceptable to alternatively use native APIs to show and
* hide windows without confusing Cogl.</note>
*
* Since: 2.0
* Stability: Unstable
*/
#define cogl_onscreen_show cogl_onscreen_show_EXP
void
cogl_onscreen_show (CoglOnscreen *onscreen);
/**
* cogl_onscreen_hide:
* @onscreen: The onscreen framebuffer to make invisible
*
* This requests to make @onscreen invisible to the user.
*
* Actually the precise semantics of this function depend on the
* window system currently in use, and if you don't have a
* multi-windowining system this function may in-fact do nothing.
*
* This function does not implicitly allocate the given @onscreen
* framebuffer before hiding it.
*
* <note>Since Cogl doesn't explicitly track the visibility status of
* onscreen framebuffers it wont try to avoid redundant window system
* requests e.g. to show an already visible window. This also means
* that it's acceptable to alternatively use native APIs to show and
* hide windows without confusing Cogl.</note>
*
* Since: 2.0
* Stability: Unstable
*/
#define cogl_onscreen_hide cogl_onscreen_hide_EXP
void
cogl_onscreen_hide (CoglOnscreen *onscreen);
#define cogl_get_draw_framebuffer cogl_get_draw_framebuffer_EXP
CoglFramebuffer *
cogl_get_draw_framebuffer (void);
#endif /* COGL_ENABLE_EXPERIMENTAL_API */
G_END_DECLS
#endif /* __COGL_FRAMEBUFFER_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*/
#include <glib.h>
#include <glib-object.h>
#ifndef __COGL_GTYPE_PRIVATE_H__
#define __COGL_GTYPE_PRIVATE_H__
#define COGL_GTYPE_DEFINE_BOXED(Name, underscore_name, copy_func, free_func) \
GType \
cogl_gtype_ ## underscore_name ## _get_type (void) \
{ \
static volatile gsize type_volatile = 0; \
if (g_once_init_enter (&type_volatile)) \
{ \
GType type = \
g_boxed_type_register_static (g_intern_static_string ("Cogl" Name), \
(GBoxedCopyFunc)copy_func, \
(GBoxedFreeFunc)free_func); \
g_once_init_leave (&type_volatile, type); \
} \
return type_volatile; \
}
#endif /* __COGL_GTYPE_PRIVATE_H__ */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*/
/* This file is just kept for compatability while we eradicate
* CoglHandle
*/
#ifndef __COGL_HANDLE_H
#define __COGL_HANDLE_H
#include "cogl-object-private.h"
#endif /* __COGL_HANDLE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_INDEX_ARRAY_PRIVATE_H
#define __COGL_INDEX_ARRAY_PRIVATE_H
#include "cogl-buffer-private.h"
struct _CoglIndexArray
{
CoglBuffer _parent;
};
#endif /* __COGL_INDEX_ARRAY_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-object-private.h"
#include "cogl-indices.h"
#include "cogl-indices-private.h"
static void _cogl_index_array_free (CoglIndexArray *indices);
COGL_BUFFER_DEFINE (IndexArray, index_array);
/* XXX: Unlike the wiki design this just takes a size. A single
* indices buffer should be able to contain multiple ranges of indices
* which the wiki design doesn't currently consider. */
CoglIndexArray *
cogl_index_array_new (gsize bytes)
{
CoglIndexArray *indices = g_slice_new (CoglIndexArray);
gboolean use_malloc;
if (!cogl_features_available (COGL_FEATURE_VBOS))
use_malloc = TRUE;
else
use_malloc = FALSE;
/* parent's constructor */
_cogl_buffer_initialize (COGL_BUFFER (indices),
bytes,
use_malloc,
COGL_BUFFER_BIND_TARGET_INDEX_ARRAY,
COGL_BUFFER_USAGE_HINT_INDEX_ARRAY,
COGL_BUFFER_UPDATE_HINT_STATIC);
return _cogl_index_array_object_new (indices);
}
static void
_cogl_index_array_free (CoglIndexArray *indices)
{
/* parent's destructor */
_cogl_buffer_fini (COGL_BUFFER (indices));
g_slice_free (CoglIndexArray, indices);
}
gboolean
cogl_index_array_allocate (CoglIndexArray *indices,
GError *error)
{
/* TODO */
return TRUE;
}
/* XXX: do we want a convenience function like this as an alternative
* to using cogl_buffer_set_data? The advantage of this is that we can
* track meta data such as the indices type and max_index_value for a
* range as part of the indices array. If we just leave people to use
* cogl_buffer_set_data then we either need a way to specify the type
* and max index value at draw time or we'll want a separate way to
* declare the type and max value for a range after uploading the
* data.
*
* XXX: I think in the end it'll be that CoglIndices are to
* CoglIndexArrays as CoglAttributes are to CoglVertices. I.e
* a CoglIndexArray is a lite subclass of CoglBuffer that simply
* implies that the buffer will later be bound as indices but doesn't
* track more detailed meta data. CoglIndices build on a
* CoglIndexArray and define the type and max_index_value for some
* sub-range of a CoglIndexArray.
*
* XXX: The double plurel form that "Indices" "Array" implies could be
* a bit confusing. Also to be a bit more consistent with
* CoglVertexArray vs CoglAttribute it might be best to rename so
* we have CoglIndexArray vs CoglIndices? maybe even
* CoglIndexRange :-/ ?
*
* CoglBuffer
* CoglVertexArray (buffer sub-class)
* CoglPrimitive (defines meta data for sub-region of array)
* CoglPixelArray (buffer sub-class)
* CoglIndexArray (buffer sub-class)
* CoglIndices (defines meta data for sub-region of array)
*
*/
#if 0
void
cogl_index_array_set_data (CoglIndexArray *indices,
CoglIndicesType type,
int max_index_value,
gsize write_offset,
void *user_indices,
int n_indices)
{
GList *l;
for (l = indices->ranges; l; l = l->next)
{
}
cogl_buffer_set
}
#endif

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_INDEX_ARRAY_H__
#define __COGL_INDEX_ARRAY_H__
G_BEGIN_DECLS
/**
* SECTION:cogl-vertex-indices
* @short_description: Functions for creating and manipulating vertex
* indices.
*
* FIXME
*/
typedef struct _CoglIndexArray CoglIndexArray;
/**
* cogl_index_array_new:
* @bytes: The number of bytes to allocate for vertex attribute data.
*
* Declares a new #CoglIndexArray of @size bytes to contain vertex
* indices. Once declared, data can be set using
* cogl_buffer_set_data() or by mapping it into the application's
* address space using cogl_buffer_map().
*
* Since: 1.4
* Stability: Unstable
*/
CoglIndexArray *
cogl_index_array_new (gsize bytes);
/**
* cogl_is_indices_array:
* @object: A #CoglObject
*
* Gets whether the given object references a #CoglIndexArray.
*
* Returns: %TRUE if the handle references a #CoglIndexArray,
* %FALSE otherwise
*
* Since: 1.4
* Stability: Unstable
*/
gboolean
cogl_is_indices_array (void *object);
G_END_DECLS
#endif /* __COGL_INDEX_ARRAY_H__ */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_INDICES_PRIVATE_H
#define __COGL_INDICES_PRIVATE_H
#include "cogl-object-private.h"
#include "cogl-index-array-private.h"
#include "cogl-types.h"
struct _CoglIndices
{
CoglObject _parent;
CoglIndexArray *array;
size_t offset;
CoglIndicesType type;
int immutable_ref;
};
CoglIndices *
_cogl_indices_immutable_ref (CoglIndices *indices);
void
_cogl_indices_immutable_unref (CoglIndices *indices);
#endif /* __COGL_INDICES_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-object-private.h"
#include "cogl-context-private.h"
#include "cogl-indices.h"
#include "cogl-indices-private.h"
#include "cogl-index-array.h"
#include <stdarg.h>
static void _cogl_indices_free (CoglIndices *indices);
COGL_OBJECT_DEFINE (Indices, indices);
static size_t
sizeof_indices_type (CoglIndicesType type)
{
switch (type)
{
case COGL_INDICES_TYPE_UNSIGNED_BYTE:
return 1;
case COGL_INDICES_TYPE_UNSIGNED_SHORT:
return 2;
case COGL_INDICES_TYPE_UNSIGNED_INT:
return 4;
}
g_return_val_if_reached (0);
}
CoglIndices *
cogl_indices_new_for_array (CoglIndicesType type,
CoglIndexArray *array,
gsize offset)
{
CoglIndices *indices = g_slice_new (CoglIndices);
indices->array = cogl_object_ref (array);
indices->offset = offset;
indices->type = type;
indices->immutable_ref = 0;
return _cogl_indices_object_new (indices);
}
CoglIndices *
cogl_indices_new (CoglIndicesType type,
const void *indices_data,
int n_indices)
{
size_t array_bytes = sizeof_indices_type (type) * n_indices;
CoglIndexArray *array = cogl_index_array_new (array_bytes);
CoglBuffer *buffer = COGL_BUFFER (array);
CoglIndices *indices;
cogl_buffer_set_data (buffer,
0,
indices_data,
array_bytes);
indices = cogl_indices_new_for_array (type, array, 0);
cogl_object_unref (array);
return indices;
}
CoglIndexArray *
cogl_indices_get_array (CoglIndices *indices)
{
return indices->array;
}
CoglIndicesType
cogl_indices_get_type (CoglIndices *indices)
{
g_return_val_if_fail (cogl_is_indices (indices),
COGL_INDICES_TYPE_UNSIGNED_BYTE);
return indices->type;
}
gsize
cogl_indices_get_offset (CoglIndices *indices)
{
g_return_val_if_fail (cogl_is_indices (indices), 0);
return indices->offset;
}
static void
warn_about_midscene_changes (void)
{
static gboolean seen = FALSE;
if (!seen)
{
g_warning ("Mid-scene modification of indices has "
"undefined results\n");
seen = TRUE;
}
}
void
cogl_indices_set_offset (CoglIndices *indices,
gsize offset)
{
g_return_if_fail (cogl_is_indices (indices));
if (G_UNLIKELY (indices->immutable_ref))
warn_about_midscene_changes ();
indices->offset = offset;
}
static void
_cogl_indices_free (CoglIndices *indices)
{
cogl_object_unref (indices->array);
g_slice_free (CoglIndices, indices);
}
CoglIndices *
_cogl_indices_immutable_ref (CoglIndices *indices)
{
g_return_val_if_fail (cogl_is_indices (indices), NULL);
indices->immutable_ref++;
_cogl_buffer_immutable_ref (COGL_BUFFER (indices->array));
return indices;
}
void
_cogl_indices_immutable_unref (CoglIndices *indices)
{
g_return_if_fail (cogl_is_indices (indices));
g_return_if_fail (indices->immutable_ref > 0);
indices->immutable_ref--;
_cogl_buffer_immutable_unref (COGL_BUFFER (indices->array));
}
CoglIndices *
cogl_get_rectangle_indices (int n_rectangles)
{
int n_indices = n_rectangles * 6;
_COGL_GET_CONTEXT (ctx, NULL);
/* Check if the largest index required will fit in a byte array... */
if (n_indices <= 256 / 4 * 6)
{
/* Generate the byte array if we haven't already */
if (ctx->rectangle_byte_indices == NULL)
{
guint8 *byte_array = g_malloc (256 / 4 * 6 * sizeof (guint8));
guint8 *p = byte_array;
int i, vert_num = 0;
for (i = 0; i < 256 / 4; i++)
{
*(p++) = vert_num + 0;
*(p++) = vert_num + 1;
*(p++) = vert_num + 2;
*(p++) = vert_num + 0;
*(p++) = vert_num + 2;
*(p++) = vert_num + 3;
vert_num += 4;
}
ctx->rectangle_byte_indices
= cogl_indices_new (COGL_INDICES_TYPE_UNSIGNED_BYTE,
byte_array,
256 / 4 * 6);
g_free (byte_array);
}
return ctx->rectangle_byte_indices;
}
else
{
if (ctx->rectangle_short_indices_len < n_indices)
{
guint16 *short_array;
guint16 *p;
int i, vert_num = 0;
if (ctx->rectangle_short_indices != NULL)
cogl_object_unref (ctx->rectangle_short_indices);
/* Pick a power of two >= MAX (512, n_indices) */
if (ctx->rectangle_short_indices_len == 0)
ctx->rectangle_short_indices_len = 512;
while (ctx->rectangle_short_indices_len < n_indices)
ctx->rectangle_short_indices_len *= 2;
/* Over-allocate to generate a whole number of quads */
p = short_array = g_malloc ((ctx->rectangle_short_indices_len
+ 5) / 6 * 6
* sizeof (guint16));
/* Fill in the complete quads */
for (i = 0; i < ctx->rectangle_short_indices_len; i += 6)
{
*(p++) = vert_num + 0;
*(p++) = vert_num + 1;
*(p++) = vert_num + 2;
*(p++) = vert_num + 0;
*(p++) = vert_num + 2;
*(p++) = vert_num + 3;
vert_num += 4;
}
ctx->rectangle_short_indices
= cogl_indices_new (COGL_INDICES_TYPE_UNSIGNED_SHORT,
short_array,
ctx->rectangle_short_indices_len);
g_free (short_array);
}
return ctx->rectangle_short_indices;
}
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_INDICES_H__
#define __COGL_INDICES_H__
#include <cogl/cogl-index-array.h>
G_BEGIN_DECLS
/**
* SECTION:cogl-index-range
* @short_description: Fuctions for declaring a range of vertex indices
* stored in a #CoglIndexArray.
*
* FIXME
*/
typedef struct _CoglIndices CoglIndices;
CoglIndices *
cogl_indices_new (CoglIndicesType type,
const void *indices_data,
int n_indices);
CoglIndices *
cogl_indices_new_for_array (CoglIndicesType type,
CoglIndexArray *array,
gsize offset);
CoglIndexArray *
cogl_indices_get_array (CoglIndices *indices);
CoglIndicesType
cogl_indices_get_type (CoglIndices *indices);
gsize
cogl_indices_get_offset (CoglIndices *indices);
void
cogl_indices_set_offset (CoglIndices *indices,
gsize offset);
CoglIndices *
cogl_get_rectangle_indices (int n_rectangles);
G_END_DECLS
#endif /* __COGL_INDICES_H__ */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_INTERNAL_H
#define __COGL_INTERNAL_H
#include "cogl.h"
#include "cogl-matrix-stack.h"
#include "cogl-bitmask.h"
#ifdef COGL_HAS_XLIB_SUPPORT
#include <X11/Xutil.h>
#endif
typedef enum
{
COGL_FRONT_WINDING_CLOCKWISE,
COGL_FRONT_WINDING_COUNTER_CLOCKWISE
} CoglFrontWinding;
typedef enum {
COGL_BOXED_NONE,
COGL_BOXED_INT,
COGL_BOXED_FLOAT,
COGL_BOXED_MATRIX
} CoglBoxedType;
typedef struct _CoglBoxedValue
{
CoglBoxedType type;
int size, count;
gboolean transpose;
union {
float float_value[4];
int int_value[4];
float matrix[16];
float *float_array;
int *int_array;
void *array;
} v;
} CoglBoxedValue;
#ifdef COGL_GL_DEBUG
const char *
cogl_gl_error_to_string (GLenum error_code);
#define GE(x) G_STMT_START { \
GLenum __err; \
(x); \
while ((__err = glGetError ()) != GL_NO_ERROR) \
{ \
g_warning ("%s: GL error (%d): %s\n", \
G_STRLOC, \
__err, \
cogl_gl_error_to_string (__err)); \
} } G_STMT_END
#define GE_RET(ret, x) G_STMT_START { \
GLenum __err; \
ret = (x); \
while ((__err = glGetError ()) != GL_NO_ERROR) \
{ \
g_warning ("%s: GL error (%d): %s\n", \
G_STRLOC, \
__err, \
cogl_gl_error_to_string (__err)); \
} } G_STMT_END
#else /* !COGL_GL_DEBUG */
#define GE(x) (x)
#define GE_RET(ret, x) (ret = (x))
#endif /* COGL_GL_DEBUG */
#define COGL_ENABLE_ALPHA_TEST (1<<1)
#define COGL_ENABLE_VERTEX_ARRAY (1<<2)
#define COGL_ENABLE_COLOR_ARRAY (1<<3)
#define COGL_ENABLE_BACKFACE_CULLING (1<<4)
int
_cogl_get_format_bpp (CoglPixelFormat format);
void
_cogl_enable (unsigned long flags);
unsigned long
_cogl_get_enable (void);
void
_cogl_flush_face_winding (void);
void
_cogl_transform_point (const CoglMatrix *matrix_mv,
const CoglMatrix *matrix_p,
const float *viewport,
float *x,
float *y);
#define COGL_DRIVER_ERROR (_cogl_driver_error_quark ())
typedef enum { /*< prefix=COGL_DRIVER_ERROR >*/
COGL_DRIVER_ERROR_UNKNOWN_VERSION,
COGL_DRIVER_ERROR_INVALID_VERSION
} CoglDriverError;
gboolean
_cogl_check_extension (const char *name, const char *ext);
GQuark
_cogl_driver_error_quark (void);
#endif /* __COGL_INTERNAL_H */

93
clutter/cogl/cogl/cogl-journal-private.h
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_JOURNAL_PRIVATE_H
#define __COGL_JOURNAL_PRIVATE_H
#include "cogl.h"
#include "cogl-handle.h"
#include "cogl-clip-stack.h"
typedef struct _CoglJournal
{
CoglObject _parent;
GArray *entries;
GArray *vertices;
size_t needed_vbo_len;
int fast_read_pixel_count;
} CoglJournal;
/* To improve batching of geometry when submitting vertices to OpenGL we
* log the texture rectangles we want to draw to a journal, so when we
* later flush the journal we aim to batch data, and gl draw calls. */
typedef struct _CoglJournalEntry
{
CoglPipeline *pipeline;
int n_layers;
CoglMatrix model_view;
CoglClipStack *clip_stack;
/* Offset into ctx->logged_vertices */
size_t array_offset;
/* XXX: These entries are pretty big now considering the padding in
* CoglPipelineFlushOptions and CoglMatrix, so we might need to optimize this
* later. */
} CoglJournalEntry;
CoglJournal *
_cogl_journal_new (void);
void
_cogl_journal_log_quad (CoglJournal *journal,
const float *position,
CoglPipeline *pipeline,
int n_layers,
CoglHandle layer0_override_texture,
const float *tex_coords,
unsigned int tex_coords_len);
void
_cogl_journal_flush (CoglJournal *journal,
CoglFramebuffer *framebuffer);
void
_cogl_journal_discard (CoglJournal *journal);
gboolean
_cogl_journal_all_entries_within_bounds (CoglJournal *journal,
float clip_x0,
float clip_y0,
float clip_x1,
float clip_y1);
gboolean
_cogl_journal_try_read_pixel (CoglJournal *journal,
int x,
int y,
CoglPixelFormat format,
guint8 *pixel,
gboolean *found_intersection);
#endif /* __COGL_JOURNAL_PRIVATE_H */

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495
clutter/cogl/cogl/cogl-material-compat.c
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@ -1,495 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <cogl.h>
#include <cogl-material-compat.h>
#include <cogl-pipeline.h>
#include <cogl-pipeline-private.h>
#include <cogl-types.h>
#include <cogl-matrix.h>
#include <cogl-context-private.h>
CoglMaterial *
cogl_material_new (void)
{
return COGL_MATERIAL (cogl_pipeline_new ());
}
CoglMaterial *
cogl_material_copy (CoglMaterial *source)
{
return COGL_MATERIAL (cogl_pipeline_copy (COGL_PIPELINE (source)));
}
CoglHandle
cogl_material_ref (CoglHandle handle)
{
return cogl_object_ref (handle);
}
void
cogl_material_unref (CoglHandle handle)
{
cogl_object_unref (handle);
}
gboolean
cogl_is_material (CoglHandle handle)
{
return cogl_is_pipeline (handle);
}
void
cogl_material_set_color (CoglMaterial *material,
const CoglColor *color)
{
cogl_pipeline_set_color (COGL_PIPELINE (material), color);
}
void
cogl_material_set_color4ub (CoglMaterial *material,
guint8 red,
guint8 green,
guint8 blue,
guint8 alpha)
{
cogl_pipeline_set_color4ub (COGL_PIPELINE (material),
red, green, blue, alpha);
}
void
cogl_material_set_color4f (CoglMaterial *material,
float red,
float green,
float blue,
float alpha)
{
cogl_pipeline_set_color4f (COGL_PIPELINE (material),
red, green, blue, alpha);
}
void
cogl_material_get_color (CoglMaterial *material,
CoglColor *color)
{
cogl_pipeline_get_color (COGL_PIPELINE (material), color);
}
void
cogl_material_set_ambient (CoglMaterial *material,
const CoglColor *ambient)
{
cogl_pipeline_set_ambient (COGL_PIPELINE (material), ambient);
}
void
cogl_material_get_ambient (CoglMaterial *material,
CoglColor *ambient)
{
cogl_pipeline_get_ambient (COGL_PIPELINE (material), ambient);
}
void
cogl_material_set_diffuse (CoglMaterial *material,
const CoglColor *diffuse)
{
cogl_pipeline_set_diffuse (COGL_PIPELINE (material), diffuse);
}
void
cogl_material_get_diffuse (CoglMaterial *material,
CoglColor *diffuse)
{
cogl_pipeline_get_diffuse (COGL_PIPELINE (material), diffuse);
}
void
cogl_material_set_ambient_and_diffuse (CoglMaterial *material,
const CoglColor *color)
{
cogl_pipeline_set_ambient_and_diffuse (COGL_PIPELINE (material), color);
}
void
cogl_material_set_specular (CoglMaterial *material,
const CoglColor *specular)
{
cogl_pipeline_set_specular (COGL_PIPELINE (material), specular);
}
void
cogl_material_get_specular (CoglMaterial *material,
CoglColor *specular)
{
cogl_pipeline_get_specular (COGL_PIPELINE (material), specular);
}
void
cogl_material_set_shininess (CoglMaterial *material,
float shininess)
{
cogl_pipeline_set_shininess (COGL_PIPELINE (material), shininess);
}
float
cogl_material_get_shininess (CoglMaterial *material)
{
return cogl_pipeline_get_shininess (COGL_PIPELINE (material));
}
void
cogl_material_set_emission (CoglMaterial *material,
const CoglColor *emission)
{
cogl_pipeline_set_emission (COGL_PIPELINE (material), emission);
}
void
cogl_material_get_emission (CoglMaterial *material,
CoglColor *emission)
{
cogl_pipeline_get_emission (COGL_PIPELINE (material), emission);
}
void
cogl_material_set_alpha_test_function (CoglMaterial *material,
CoglMaterialAlphaFunc alpha_func,
float alpha_reference)
{
cogl_pipeline_set_alpha_test_function (COGL_PIPELINE (material),
alpha_func,
alpha_reference);
}
gboolean
cogl_material_set_blend (CoglMaterial *material,
const char *blend_string,
GError **error)
{
return cogl_pipeline_set_blend (COGL_PIPELINE (material),
blend_string,
error);
}
void
cogl_material_set_blend_constant (CoglMaterial *material,
const CoglColor *constant_color)
{
cogl_pipeline_set_blend_constant (COGL_PIPELINE (material), constant_color);
}
void
cogl_material_set_point_size (CoglMaterial *material,
float point_size)
{
cogl_pipeline_set_point_size (COGL_PIPELINE (material), point_size);
}
float
cogl_material_get_point_size (CoglMaterial *material)
{
return cogl_pipeline_get_point_size (COGL_PIPELINE (material));
}
CoglHandle
cogl_material_get_user_program (CoglMaterial *material)
{
return cogl_pipeline_get_user_program (COGL_PIPELINE (material));
}
void
cogl_material_set_user_program (CoglMaterial *material,
CoglHandle program)
{
cogl_pipeline_set_user_program (COGL_PIPELINE (material), program);
}
void
cogl_material_set_layer (CoglMaterial *material,
int layer_index,
CoglHandle texture)
{
cogl_pipeline_set_layer_texture (COGL_PIPELINE (material),
layer_index, texture);
}
void
cogl_material_remove_layer (CoglMaterial *material,
int layer_index)
{
cogl_pipeline_remove_layer (COGL_PIPELINE (material), layer_index);
}
gboolean
cogl_material_set_layer_combine (CoglMaterial *material,
int layer_index,
const char *blend_string,
GError **error)
{
return cogl_pipeline_set_layer_combine (COGL_PIPELINE (material),
layer_index,
blend_string,
error);
}
void
cogl_material_set_layer_combine_constant (CoglMaterial *material,
int layer_index,
const CoglColor *constant)
{
cogl_pipeline_set_layer_combine_constant (COGL_PIPELINE (material),
layer_index,
constant);
}
void
cogl_material_set_layer_matrix (CoglMaterial *material,
int layer_index,
const CoglMatrix *matrix)
{
cogl_pipeline_set_layer_matrix (COGL_PIPELINE (material),
layer_index, matrix);
}
G_CONST_RETURN GList *
cogl_material_get_layers (CoglMaterial *material)
{
return _cogl_pipeline_get_layers (COGL_PIPELINE (material));
}
int
cogl_material_get_n_layers (CoglMaterial *material)
{
return cogl_pipeline_get_n_layers (COGL_PIPELINE (material));
}
CoglMaterialLayerType
cogl_material_layer_get_type (CoglMaterialLayer *layer)
{
return COGL_MATERIAL_LAYER_TYPE_TEXTURE;
}
CoglHandle
cogl_material_layer_get_texture (CoglMaterialLayer *layer)
{
return _cogl_pipeline_layer_get_texture (COGL_PIPELINE_LAYER (layer));
}
CoglMaterialFilter
cogl_material_layer_get_min_filter (CoglMaterialLayer *layer)
{
return _cogl_pipeline_layer_get_min_filter (COGL_PIPELINE_LAYER (layer));
}
CoglMaterialFilter
cogl_material_layer_get_mag_filter (CoglMaterialLayer *layer)
{
return _cogl_pipeline_layer_get_mag_filter (COGL_PIPELINE_LAYER (layer));
}
void
cogl_material_set_layer_filters (CoglMaterial *material,
int layer_index,
CoglMaterialFilter min_filter,
CoglMaterialFilter mag_filter)
{
cogl_pipeline_set_layer_filters (COGL_PIPELINE (material),
layer_index,
min_filter,
mag_filter);
}
gboolean
cogl_material_set_layer_point_sprite_coords_enabled (CoglMaterial *material,
int layer_index,
gboolean enable,
GError **error)
{
CoglPipeline *pipeline = COGL_PIPELINE (material);
return cogl_pipeline_set_layer_point_sprite_coords_enabled (pipeline,
layer_index,
enable,
error);
}
gboolean
cogl_material_get_layer_point_sprite_coords_enabled (CoglMaterial *material,
int layer_index)
{
CoglPipeline *pipeline = COGL_PIPELINE (material);
return cogl_pipeline_get_layer_point_sprite_coords_enabled (pipeline,
layer_index);
}
CoglMaterialWrapMode
cogl_material_get_layer_wrap_mode_s (CoglMaterial *material,
int layer_index)
{
return cogl_pipeline_get_layer_wrap_mode_s (COGL_PIPELINE (material),
layer_index);
}
void
cogl_material_set_layer_wrap_mode_s (CoglMaterial *material,
int layer_index,
CoglMaterialWrapMode mode)
{
cogl_pipeline_set_layer_wrap_mode_s (COGL_PIPELINE (material), layer_index,
mode);
}
CoglMaterialWrapMode
cogl_material_get_layer_wrap_mode_t (CoglMaterial *material,
int layer_index)
{
return cogl_pipeline_get_layer_wrap_mode_t (COGL_PIPELINE (material),
layer_index);
}
void
cogl_material_set_layer_wrap_mode_t (CoglMaterial *material,
int layer_index,
CoglMaterialWrapMode mode)
{
cogl_pipeline_set_layer_wrap_mode_t (COGL_PIPELINE (material), layer_index,
mode);
}
CoglMaterialWrapMode
cogl_material_get_layer_wrap_mode_p (CoglMaterial *material,
int layer_index)
{
return cogl_pipeline_get_layer_wrap_mode_p (COGL_PIPELINE (material),
layer_index);
}
void
cogl_material_set_layer_wrap_mode_p (CoglMaterial *material,
int layer_index,
CoglMaterialWrapMode mode)
{
cogl_pipeline_set_layer_wrap_mode_p (COGL_PIPELINE (material), layer_index,
mode);
}
void
cogl_material_set_layer_wrap_mode (CoglMaterial *material,
int layer_index,
CoglMaterialWrapMode mode)
{
cogl_pipeline_set_layer_wrap_mode (COGL_PIPELINE (material), layer_index,
mode);
}
CoglMaterialWrapMode
cogl_material_layer_get_wrap_mode_s (CoglMaterialLayer *layer)
{
return _cogl_pipeline_layer_get_wrap_mode_s (COGL_PIPELINE_LAYER (layer));
}
CoglMaterialWrapMode
cogl_material_layer_get_wrap_mode_t (CoglMaterialLayer *layer)
{
return _cogl_pipeline_layer_get_wrap_mode_t (COGL_PIPELINE_LAYER (layer));
}
CoglMaterialWrapMode
cogl_material_layer_get_wrap_mode_p (CoglMaterialLayer *layer)
{
return _cogl_pipeline_layer_get_wrap_mode_p (COGL_PIPELINE_LAYER (layer));
}
void
cogl_material_set_depth_test_enabled (CoglMaterial *material,
gboolean enable)
{
cogl_pipeline_set_depth_test_enabled (COGL_PIPELINE (material), enable);
}
gboolean
cogl_material_get_depth_test_enabled (CoglMaterial *material)
{
return cogl_pipeline_get_depth_test_enabled (COGL_PIPELINE (material));
}
void
cogl_material_set_depth_writing_enabled (CoglMaterial *material,
gboolean enable)
{
cogl_pipeline_set_depth_writing_enabled (COGL_PIPELINE (material), enable);
}
gboolean
cogl_material_get_depth_writing_enabled (CoglMaterial *material)
{
return cogl_pipeline_get_depth_writing_enabled (COGL_PIPELINE (material));
}
void
cogl_material_set_depth_test_function (CoglMaterial *material,
CoglDepthTestFunction function)
{
cogl_pipeline_set_depth_test_function (COGL_PIPELINE (material), function);
}
CoglDepthTestFunction
cogl_material_get_depth_test_function (CoglMaterial *material)
{
return cogl_pipeline_get_depth_test_function (COGL_PIPELINE (material));
}
gboolean
cogl_material_set_depth_range (CoglMaterial *material,
float near_val,
float far_val,
GError **error)
{
return cogl_pipeline_set_depth_range (COGL_PIPELINE (material),
near_val, far_val, error);
}
void
cogl_material_get_depth_range (CoglMaterial *material,
float *near_val,
float *far_val)
{
cogl_pipeline_get_depth_range (COGL_PIPELINE (material), near_val, far_val);
}
void
cogl_material_foreach_layer (CoglMaterial *material,
CoglMaterialLayerCallback callback,
void *user_data)
{
cogl_pipeline_foreach_layer (COGL_PIPELINE (material),
(CoglPipelineLayerCallback)callback, user_data);
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
/*
* Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* \file math/m_matrix.h
* Defines basic structures for matrix-handling.
*/
#ifndef _M_MATRIX_H
#define _M_MATRIX_H
#include <cogl-matrix.h>
#include <glib.h>
/*
* \name Symbolic names to some of the entries in the matrix
*
* These are handy for the viewport mapping, which is expressed as a matrix.
*/
/*@{*/
#define MAT_SX 0
#define MAT_SY 5
#define MAT_SZ 10
#define MAT_TX 12
#define MAT_TY 13
#define MAT_TZ 14
/*@}*/
/*
* Different kinds of 4x4 transformation matrices.
* We use these to select specific optimized vertex transformation routines.
*/
enum CoglMatrixType {
COGL_MATRIX_TYPE_GENERAL, /**< general 4x4 matrix */
COGL_MATRIX_TYPE_IDENTITY, /**< identity matrix */
COGL_MATRIX_TYPE_3D_NO_ROT, /**< orthogonal projection and others... */
COGL_MATRIX_TYPE_PERSPECTIVE, /**< perspective projection matrix */
COGL_MATRIX_TYPE_2D, /**< 2-D transformation */
COGL_MATRIX_TYPE_2D_NO_ROT, /**< 2-D scale & translate only */
COGL_MATRIX_TYPE_3D /**< 3-D transformation */
} ;
#if 0
/*
* Matrix type to represent 4x4 transformation matrices.
*/
typedef struct {
float *m; /**< 16 matrix elements (16-byte aligned) */
float *inv; /**< optional 16-element inverse (16-byte aligned) */
unsigned int flags; /**< possible values determined by (of \link
* MatFlags MAT_FLAG_* flags\endlink)
*/
enum CoglMatrixType type;
} CoglMatrix;
#endif
void
_math_matrix_multiply (CoglMatrix *result,
const CoglMatrix *a,
const CoglMatrix *b);
void
_math_matrix_multiply_array (CoglMatrix *result, const float *b);
void
_math_matrix_init_from_array (CoglMatrix *matrix, const float *array);
void
_math_matrix_translate (CoglMatrix *matrix, float x, float y, float z);
void
_math_matrix_rotate (CoglMatrix *matrix, float angle,
float x, float y, float z);
void
_math_matrix_scale (CoglMatrix *matrix, float x, float y, float z);
void
_math_matrix_ortho (CoglMatrix *matrix,
float left, float right,
float bottom, float top,
float nearval, float farval);
void
_math_matrix_frustum (CoglMatrix *matrix,
float left, float right,
float bottom, float top,
float nearval, float farval);
void
_math_matrix_viewport (CoglMatrix *matrix,
float x, float y, float width, float height,
float z_near, float z_far, float depth_max);
void
_math_matrix_init_identity (CoglMatrix *matrix);
gboolean
_math_matrix_update_inverse (CoglMatrix *matrix);
void
_math_matrix_update_type_and_flags (CoglMatrix *matrix);
void
_math_matrix_print (const CoglMatrix *matrix);
gboolean
_math_matrix_is_length_preserving (const CoglMatrix *matrix);
gboolean
_math_matrix_has_rotation (const CoglMatrix *matrix);
gboolean
_math_matrix_is_general_scale (const CoglMatrix *matrix);
gboolean
_math_matrix_is_dirty (const CoglMatrix *matrix);
/*
* \name Related functions that don't actually operate on CoglMatrix structs
*/
/*@{*/
void
_math_transposef ( float to[16], const float from[16]);
void
_math_transposed (double to[16], const double from[16]);
void
_math_transposefd (float to[16], const double from[16]);
/*
* Transform a point (column vector) by a matrix: Q = M * P
*/
#define TRANSFORM_POINT( Q, M, P ) \
Q[0] = M[0] * P[0] + M[4] * P[1] + M[8] * P[2] + M[12] * P[3]; \
Q[1] = M[1] * P[0] + M[5] * P[1] + M[9] * P[2] + M[13] * P[3]; \
Q[2] = M[2] * P[0] + M[6] * P[1] + M[10] * P[2] + M[14] * P[3]; \
Q[3] = M[3] * P[0] + M[7] * P[1] + M[11] * P[2] + M[15] * P[3];
#define TRANSFORM_POINT3( Q, M, P ) \
Q[0] = M[0] * P[0] + M[4] * P[1] + M[8] * P[2] + M[12]; \
Q[1] = M[1] * P[0] + M[5] * P[1] + M[9] * P[2] + M[13]; \
Q[2] = M[2] * P[0] + M[6] * P[1] + M[10] * P[2] + M[14]; \
Q[3] = M[3] * P[0] + M[7] * P[1] + M[11] * P[2] + M[15];
/*
* Transform a normal (row vector) by a matrix: [NX NY NZ] = N * MAT
*/
#define TRANSFORM_NORMAL( TO, N, MAT ) \
do { \
TO[0] = N[0] * MAT[0] + N[1] * MAT[1] + N[2] * MAT[2]; \
TO[1] = N[0] * MAT[4] + N[1] * MAT[5] + N[2] * MAT[6]; \
TO[2] = N[0] * MAT[8] + N[1] * MAT[9] + N[2] * MAT[10]; \
} while (0)
/*
* Transform a direction by a matrix.
*/
#define TRANSFORM_DIRECTION( TO, DIR, MAT ) \
do { \
TO[0] = DIR[0] * MAT[0] + DIR[1] * MAT[4] + DIR[2] * MAT[8]; \
TO[1] = DIR[0] * MAT[1] + DIR[1] * MAT[5] + DIR[2] * MAT[9]; \
TO[2] = DIR[0] * MAT[2] + DIR[1] * MAT[6] + DIR[2] * MAT[10];\
} while (0)
void
_mesa_transform_vector (float u[4], const float v[4], const float m[16]);
/*@}*/
#endif

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_MATRIX_PRIVATE_H
#define __COGL_MATRIX_PRIVATE_H
#include <glib.h>
G_BEGIN_DECLS
#define _COGL_MATRIX_DEBUG_PRINT(MATRIX) \
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_MATRICES))) \
{ \
g_print ("%s:\n", G_STRFUNC); \
_cogl_matrix_print (MATRIX); \
}
void
_cogl_matrix_print (CoglMatrix *matrix);
G_END_DECLS
#endif /* __COGL_MATRIX_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Havoc Pennington <hp@pobox.com> for litl
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-context-private.h"
#include "cogl-internal.h"
#include "cogl-matrix-stack.h"
#include "cogl-framebuffer-private.h"
#include "cogl-object-private.h"
typedef struct {
CoglMatrix matrix;
gboolean is_identity;
/* count of pushes with no changes; when a change is
* requested, we create a new state and decrement this
*/
int push_count;
} CoglMatrixState;
/**
* CoglMatrixStack:
*
* Stores a cogl-side matrix stack, which we use as a cache
* so we can get the matrix efficiently when using indirect
* rendering.
*/
struct _CoglMatrixStack
{
CoglObject _parent;
GArray *stack;
/* which state does GL have, NULL if unknown */
CoglMatrixState *flushed_state;
gboolean flushed_identity;
unsigned int age;
};
static void _cogl_matrix_stack_free (CoglMatrixStack *stack);
COGL_OBJECT_INTERNAL_DEFINE (MatrixStack, matrix_stack);
/* XXX: this doesn't initialize the matrix! */
static void
_cogl_matrix_state_init (CoglMatrixState *state)
{
state->push_count = 0;
state->is_identity = FALSE;
}
static CoglMatrixState *
_cogl_matrix_stack_top (CoglMatrixStack *stack)
{
return &g_array_index (stack->stack, CoglMatrixState, stack->stack->len - 1);
}
/* XXX:
* Operations like scale, translate, rotate etc need to have an
* initialized state->matrix to work with, so they will pass
* initialize = TRUE.
*
* _cogl_matrix_stack_load_identity and _cogl_matrix_stack_set on the
* other hand don't so they will pass initialize = FALSE
*
* NB: Identity matrices are represented by setting
* state->is_identity=TRUE in which case state->matrix will be
* uninitialized.
*/
static CoglMatrixState *
_cogl_matrix_stack_top_mutable (CoglMatrixStack *stack,
gboolean initialize)
{
CoglMatrixState *state;
CoglMatrixState *new_top;
state = _cogl_matrix_stack_top (stack);
if (state->push_count == 0)
{
if (state->is_identity && initialize)
cogl_matrix_init_identity (&state->matrix);
return state;
}
state->push_count -= 1;
g_array_set_size (stack->stack, stack->stack->len + 1);
new_top = &g_array_index (stack->stack, CoglMatrixState,
stack->stack->len - 1);
_cogl_matrix_state_init (new_top);
if (initialize)
{
if (state->is_identity)
cogl_matrix_init_identity (&new_top->matrix);
else
new_top->matrix = state->matrix;
if (stack->flushed_state == state)
stack->flushed_state = new_top;
}
return new_top;
}
CoglMatrixStack*
_cogl_matrix_stack_new (void)
{
CoglMatrixStack *stack;
CoglMatrixState *state;
stack = g_slice_new0 (CoglMatrixStack);
stack->stack = g_array_sized_new (FALSE, FALSE,
sizeof (CoglMatrixState), 10);
g_array_set_size (stack->stack, 1);
state = &g_array_index (stack->stack, CoglMatrixState, 0);
_cogl_matrix_state_init (state);
state->is_identity = TRUE;
stack->age = 0;
return _cogl_matrix_stack_object_new (stack);
}
static void
_cogl_matrix_stack_free (CoglMatrixStack *stack)
{
g_array_free (stack->stack, TRUE);
g_slice_free (CoglMatrixStack, stack);
}
void
_cogl_matrix_stack_push (CoglMatrixStack *stack)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top (stack);
/* we lazily create a new stack top if someone changes the matrix
* while push_count > 0
*/
state->push_count += 1;
}
void
_cogl_matrix_stack_pop (CoglMatrixStack *stack)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top (stack);
if (state->push_count > 0)
{
state->push_count -= 1;
}
else
{
if (stack->stack->len == 1)
{
g_warning ("Too many matrix pops");
return;
}
if (stack->flushed_state == state)
{
stack->flushed_state = NULL;
}
stack->age++;
g_array_set_size (stack->stack, stack->stack->len - 1);
}
}
void
_cogl_matrix_stack_load_identity (CoglMatrixStack *stack)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, FALSE);
/* NB: Identity matrices are represented by setting
* state->is_identity = TRUE and leaving state->matrix
* uninitialized.
*
* This is done to optimize the heavy usage of
* _cogl_matrix_stack_load_identity by the Cogl Journal.
*/
if (!state->is_identity)
{
state->is_identity = TRUE;
/* mark dirty */
stack->flushed_state = NULL;
stack->age++;
}
}
void
_cogl_matrix_stack_scale (CoglMatrixStack *stack,
float x,
float y,
float z)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, TRUE);
cogl_matrix_scale (&state->matrix, x, y, z);
/* mark dirty */
stack->flushed_state = NULL;
state->is_identity = FALSE;
stack->age++;
}
void
_cogl_matrix_stack_translate (CoglMatrixStack *stack,
float x,
float y,
float z)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, TRUE);
cogl_matrix_translate (&state->matrix, x, y, z);
/* mark dirty */
stack->flushed_state = NULL;
state->is_identity = FALSE;
stack->age++;
}
void
_cogl_matrix_stack_rotate (CoglMatrixStack *stack,
float angle,
float x,
float y,
float z)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, TRUE);
cogl_matrix_rotate (&state->matrix, angle, x, y, z);
/* mark dirty */
stack->flushed_state = NULL;
state->is_identity = FALSE;
stack->age++;
}
void
_cogl_matrix_stack_multiply (CoglMatrixStack *stack,
const CoglMatrix *matrix)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, TRUE);
cogl_matrix_multiply (&state->matrix, &state->matrix, matrix);
/* mark dirty */
stack->flushed_state = NULL;
state->is_identity = FALSE;
stack->age++;
}
void
_cogl_matrix_stack_frustum (CoglMatrixStack *stack,
float left,
float right,
float bottom,
float top,
float z_near,
float z_far)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, TRUE);
cogl_matrix_frustum (&state->matrix,
left, right, bottom, top,
z_near, z_far);
/* mark dirty */
stack->flushed_state = NULL;
state->is_identity = FALSE;
stack->age++;
}
void
_cogl_matrix_stack_perspective (CoglMatrixStack *stack,
float fov_y,
float aspect,
float z_near,
float z_far)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, TRUE);
cogl_matrix_perspective (&state->matrix,
fov_y, aspect, z_near, z_far);
/* mark dirty */
stack->flushed_state = NULL;
state->is_identity = FALSE;
stack->age++;
}
void
_cogl_matrix_stack_ortho (CoglMatrixStack *stack,
float left,
float right,
float bottom,
float top,
float z_near,
float z_far)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, TRUE);
cogl_matrix_ortho (&state->matrix,
left, right, bottom, top, z_near, z_far);
/* mark dirty */
stack->flushed_state = NULL;
state->is_identity = FALSE;
stack->age++;
}
gboolean
_cogl_matrix_stack_get_inverse (CoglMatrixStack *stack,
CoglMatrix *inverse)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, TRUE);
return cogl_matrix_get_inverse (&state->matrix, inverse);
}
void
_cogl_matrix_stack_get (CoglMatrixStack *stack,
CoglMatrix *matrix)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top (stack);
/* NB: identity matrices are lazily initialized because we can often avoid
* initializing them at all if nothing is pushed on top of them since we
* load them using glLoadIdentity()
*
* The Cogl journal typically loads an identiy matrix because it performs
* software transformations, which is why we have optimized this case.
*/
if (state->is_identity)
cogl_matrix_init_identity (matrix);
else
*matrix = state->matrix;
}
void
_cogl_matrix_stack_set (CoglMatrixStack *stack,
const CoglMatrix *matrix)
{
CoglMatrixState *state;
state = _cogl_matrix_stack_top_mutable (stack, FALSE);
state->matrix = *matrix;
/* mark dirty */
stack->flushed_state = NULL;
state->is_identity = FALSE;
stack->age++;
}
#ifndef HAVE_COGL_GLES2
static void
flush_to_fixed_api_gl (gboolean is_identity,
const CoglMatrix *matrix,
void *user_data)
{
CoglMatrixStack *stack = user_data;
if (is_identity)
{
if (!stack->flushed_identity)
GE (glLoadIdentity ());
stack->flushed_identity = TRUE;
}
else
{
GE (glLoadMatrixf (cogl_matrix_get_array (matrix)) );
stack->flushed_identity = FALSE;
}
}
#endif /* HAVE_COGL_GLES2 */
void
_cogl_matrix_stack_prepare_for_flush (CoglMatrixStack *stack,
CoglMatrixMode mode,
CoglMatrixStackFlushFunc callback,
void *user_data)
{
CoglMatrixState *state;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
state = _cogl_matrix_stack_top (stack);
/* Because Cogl defines texture coordinates to have a top left origin and
* because offscreen framebuffers may be used for rendering to textures we
* always render upside down to offscreen buffers.
*/
if (mode == COGL_MATRIX_PROJECTION &&
cogl_is_offscreen (cogl_get_draw_framebuffer ()))
{
CoglMatrix flipped_projection;
CoglMatrix *projection =
state->is_identity ? &ctx->identity_matrix : &state->matrix;
cogl_matrix_multiply (&flipped_projection,
&ctx->y_flip_matrix, projection);
callback (FALSE, &flipped_projection, user_data);
}
else
callback (state->is_identity,
state->is_identity ? &ctx->identity_matrix : &state->matrix,
user_data);
}
void
_cogl_matrix_stack_flush_to_gl (CoglMatrixStack *stack,
CoglMatrixMode mode)
{
CoglMatrixState *state;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
state = _cogl_matrix_stack_top (stack);
#ifdef HAVE_COGL_GLES2
/* Under GLES2 we need to flush the matrices differently because
they are stored in uniforms attached to the program instead of
the global GL context state. At this point we can't be sure that
the right program will be generated so instead we'll just store a
reference to the matrix stack that is intended to be flushed and
update the uniform once the program is ready. */
switch (mode)
{
case COGL_MATRIX_MODELVIEW:
cogl_object_ref (stack);
if (ctx->flushed_modelview_stack)
cogl_object_unref (ctx->flushed_modelview_stack);
ctx->flushed_modelview_stack = stack;
break;
case COGL_MATRIX_PROJECTION:
cogl_object_ref (stack);
if (ctx->flushed_projection_stack)
cogl_object_unref (ctx->flushed_projection_stack);
ctx->flushed_projection_stack = stack;
break;
case COGL_MATRIX_TEXTURE:
/* This shouldn't happen because the texture matrices are
handled by the GLSL pipeline backend */
g_assert_not_reached ();
break;
}
#else /* HAVE_COGL_GLES2 */
if (stack->flushed_state == state)
return;
if (ctx->flushed_matrix_mode != mode)
{
GLenum gl_mode = 0;
switch (mode)
{
case COGL_MATRIX_MODELVIEW:
gl_mode = GL_MODELVIEW;
break;
case COGL_MATRIX_PROJECTION:
gl_mode = GL_PROJECTION;
break;
case COGL_MATRIX_TEXTURE:
gl_mode = GL_TEXTURE;
break;
}
GE (glMatrixMode (gl_mode));
ctx->flushed_matrix_mode = mode;
}
_cogl_matrix_stack_prepare_for_flush (stack,
mode,
flush_to_fixed_api_gl,
stack);
#endif /* HAVE_COGL_GLES2 */
stack->flushed_state = state;
}
void
_cogl_matrix_stack_dirty (CoglMatrixStack *stack)
{
stack->flushed_state = NULL;
stack->flushed_identity = FALSE;
}
unsigned int
_cogl_matrix_stack_get_age (CoglMatrixStack *stack)
{
return stack->age;
}
gboolean
_cogl_matrix_stack_has_identity_flag (CoglMatrixStack *stack)
{
return _cogl_matrix_stack_top (stack)->is_identity;
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Havoc Pennington <hp@pobox.com> for litl
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_MATRIX_STACK_H
#define __COGL_MATRIX_STACK_H
#include "cogl-matrix.h"
typedef struct _CoglMatrixStack CoglMatrixStack;
typedef enum {
COGL_MATRIX_MODELVIEW,
COGL_MATRIX_PROJECTION,
COGL_MATRIX_TEXTURE
} CoglMatrixMode;
typedef void (* CoglMatrixStackFlushFunc) (gboolean is_identity,
const CoglMatrix *matrix,
void *user_data);
CoglMatrixStack *
_cogl_matrix_stack_new (void);
void
_cogl_matrix_stack_push (CoglMatrixStack *stack);
void
_cogl_matrix_stack_pop (CoglMatrixStack *stack);
void
_cogl_matrix_stack_load_identity (CoglMatrixStack *stack);
void
_cogl_matrix_stack_scale (CoglMatrixStack *stack,
float x,
float y,
float z);
void
_cogl_matrix_stack_translate (CoglMatrixStack *stack,
float x,
float y,
float z);
void
_cogl_matrix_stack_rotate (CoglMatrixStack *stack,
float angle,
float x,
float y,
float z);
void
_cogl_matrix_stack_multiply (CoglMatrixStack *stack,
const CoglMatrix *matrix);
void
_cogl_matrix_stack_frustum (CoglMatrixStack *stack,
float left,
float right,
float bottom,
float top,
float z_near,
float z_far);
void
_cogl_matrix_stack_perspective (CoglMatrixStack *stack,
float fov_y,
float aspect,
float z_near,
float z_far);
void
_cogl_matrix_stack_ortho (CoglMatrixStack *stack,
float left,
float right,
float bottom,
float top,
float z_near,
float z_far);
gboolean
_cogl_matrix_stack_get_inverse (CoglMatrixStack *stack,
CoglMatrix *inverse);
void
_cogl_matrix_stack_get (CoglMatrixStack *stack,
CoglMatrix *matrix);
void
_cogl_matrix_stack_set (CoglMatrixStack *stack,
const CoglMatrix *matrix);
void
_cogl_matrix_stack_flush_to_gl (CoglMatrixStack *stack,
CoglMatrixMode mode);
void
_cogl_matrix_stack_dirty (CoglMatrixStack *stack);
unsigned int
_cogl_matrix_stack_get_age (CoglMatrixStack *stack);
/* If this returns TRUE then the top of the matrix is definitely the
identity matrix. If it returns FALSE it may or may not be the
identity matrix but no expensive comparison is performed to verify
it. */
gboolean
_cogl_matrix_stack_has_identity_flag (CoglMatrixStack *stack);
void
_cogl_matrix_stack_prepare_for_flush (CoglMatrixStack *stack,
CoglMatrixMode mode,
CoglMatrixStackFlushFunc callback,
void *user_data);
#endif /* __COGL_MATRIX_STACK_H */

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@ -1,673 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define USE_MESA_MATRIX_API
#include <cogl.h>
#include "cogl-debug.h"
#include <cogl-matrix.h>
#include <cogl-matrix-private.h>
#ifdef USE_MESA_MATRIX_API
#include <cogl-matrix-mesa.h>
#endif
#include <glib.h>
#include <math.h>
#include <string.h>
#ifdef _COGL_SUPPORTS_GTYPE_INTEGRATION
#include <cogl-gtype-private.h>
COGL_GTYPE_DEFINE_BOXED ("Matrix", matrix,
cogl_matrix_copy,
cogl_matrix_free);
#endif
void
_cogl_matrix_print (CoglMatrix *matrix)
{
float *m = (float *)matrix;
int y;
for (y = 0; y < 4; y++)
g_print ("\t%6.4f %6.4f %6.4f %6.4f\n", m[y], m[4+y], m[8+y], m[12+y]);
}
void
cogl_matrix_init_identity (CoglMatrix *matrix)
{
#ifndef USE_MESA_MATRIX_API
matrix->xx = 1; matrix->xy = 0; matrix->xz = 0; matrix->xw = 0;
matrix->yx = 0; matrix->yy = 1; matrix->yz = 0; matrix->yw = 0;
matrix->zx = 0; matrix->zy = 0; matrix->zz = 1; matrix->zw = 0;
matrix->wx = 0; matrix->wy = 0; matrix->wz = 0; matrix->ww = 1;
#else
_math_matrix_init_identity (matrix);
#endif
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
void
cogl_matrix_multiply (CoglMatrix *result,
const CoglMatrix *a,
const CoglMatrix *b)
{
#ifndef USE_MESA_MATRIX_API
CoglMatrix r;
/* row 0 */
r.xx = a->xx * b->xx + a->xy * b->yx + a->xz * b->zx + a->xw * b->wx;
r.xy = a->xx * b->xy + a->xy * b->yy + a->xz * b->zy + a->xw * b->wy;
r.xz = a->xx * b->xz + a->xy * b->yz + a->xz * b->zz + a->xw * b->wz;
r.xw = a->xx * b->xw + a->xy * b->yw + a->xz * b->zw + a->xw * b->ww;
/* row 1 */
r.yx = a->yx * b->xx + a->yy * b->yx + a->yz * b->zx + a->yw * b->wx;
r.yy = a->yx * b->xy + a->yy * b->yy + a->yz * b->zy + a->yw * b->wy;
r.yz = a->yx * b->xz + a->yy * b->yz + a->yz * b->zz + a->yw * b->wz;
r.yw = a->yx * b->xw + a->yy * b->yw + a->yz * b->zw + a->yw * b->ww;
/* row 2 */
r.zx = a->zx * b->xx + a->zy * b->yx + a->zz * b->zx + a->zw * b->wx;
r.zy = a->zx * b->xy + a->zy * b->yy + a->zz * b->zy + a->zw * b->wy;
r.zz = a->zx * b->xz + a->zy * b->yz + a->zz * b->zz + a->zw * b->wz;
r.zw = a->zx * b->xw + a->zy * b->yw + a->zz * b->zw + a->zw * b->ww;
/* row 3 */
r.wx = a->wx * b->xx + a->wy * b->yx + a->wz * b->zx + a->ww * b->wx;
r.wy = a->wx * b->xy + a->wy * b->yy + a->wz * b->zy + a->ww * b->wy;
r.wz = a->wx * b->xz + a->wy * b->yz + a->wz * b->zz + a->ww * b->wz;
r.ww = a->wx * b->xw + a->wy * b->yw + a->wz * b->zw + a->ww * b->ww;
/* The idea was that having this unrolled; it might be easier for the
* compiler to vectorize, but that's probably not true. Mesa does it
* using a single for (i=0; i<4; i++) approach, maybe that's better...
*/
*result = r;
#else
_math_matrix_multiply (result, a, b);
#endif
_COGL_MATRIX_DEBUG_PRINT (result);
}
void
cogl_matrix_rotate (CoglMatrix *matrix,
float angle,
float x,
float y,
float z)
{
#ifndef USE_MESA_MATRIX_API
CoglMatrix rotation;
CoglMatrix result;
float c, s;
angle *= G_PI / 180.0f;
c = cosf (angle);
s = sinf (angle);
rotation.xx = x * x * (1.0f - c) + c;
rotation.yx = y * x * (1.0f - c) + z * s;
rotation.zx = x * z * (1.0f - c) - y * s;
rotation.wx = 0.0f;
rotation.xy = x * y * (1.0f - c) - z * s;
rotation.yy = y * y * (1.0f - c) + c;
rotation.zy = y * z * (1.0f - c) + x * s;
rotation.wy = 0.0f;
rotation.xz = x * z * (1.0f - c) + y * s;
rotation.yz = y * z * (1.0f - c) - x * s;
rotation.zz = z * z * (1.0f - c) + c;
rotation.wz = 0.0f;
rotation.xw = 0.0f;
rotation.yw = 0.0f;
rotation.zw = 0.0f;
rotation.ww = 1.0f;
cogl_matrix_multiply (&result, matrix, &rotation);
*matrix = result;
#else
_math_matrix_rotate (matrix, angle, x, y, z);
#endif
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
void
cogl_matrix_translate (CoglMatrix *matrix,
float x,
float y,
float z)
{
#ifndef USE_MESA_MATRIX_API
matrix->xw = matrix->xx * x + matrix->xy * y + matrix->xz * z + matrix->xw;
matrix->yw = matrix->yx * x + matrix->yy * y + matrix->yz * z + matrix->yw;
matrix->zw = matrix->zx * x + matrix->zy * y + matrix->zz * z + matrix->zw;
matrix->ww = matrix->wx * x + matrix->wy * y + matrix->wz * z + matrix->ww;
#else
_math_matrix_translate (matrix, x, y, z);
#endif
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
void
cogl_matrix_scale (CoglMatrix *matrix,
float sx,
float sy,
float sz)
{
#ifndef USE_MESA_MATRIX_API
matrix->xx *= sx; matrix->xy *= sy; matrix->xz *= sz;
matrix->yx *= sx; matrix->yy *= sy; matrix->yz *= sz;
matrix->zx *= sx; matrix->zy *= sy; matrix->zz *= sz;
matrix->wx *= sx; matrix->wy *= sy; matrix->wz *= sz;
#else
_math_matrix_scale (matrix, sx, sy, sz);
#endif
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
void
cogl_matrix_frustum (CoglMatrix *matrix,
float left,
float right,
float bottom,
float top,
float z_near,
float z_far)
{
#ifndef USE_MESA_MATRIX_API
float x, y, a, b, c, d;
CoglMatrix frustum;
x = (2.0f * z_near) / (right - left);
y = (2.0f * z_near) / (top - bottom);
a = (right + left) / (right - left);
b = (top + bottom) / (top - bottom);
c = -(z_far + z_near) / ( z_far - z_near);
d = -(2.0f * z_far* z_near) / (z_far - z_near);
frustum.xx = x;
frustum.yx = 0.0f;
frustum.zx = 0.0f;
frustum.wx = 0.0f;
frustum.xy = 0.0f;
frustum.yy = y;
frustum.zy = 0.0f;
frustum.wy = 0.0f;
frustum.xz = a;
frustum.yz = b;
frustum.zz = c;
frustum.wz = -1.0f;
frustum.xw = 0.0f;
frustum.yw = 0.0f;
frustum.zw = d;
frustum.ww = 0.0f;
cogl_matrix_multiply (matrix, matrix, &frustum);
#else
_math_matrix_frustum (matrix, left, right, bottom, top, z_near, z_far);
#endif
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
void
cogl_matrix_perspective (CoglMatrix *matrix,
float fov_y,
float aspect,
float z_near,
float z_far)
{
float ymax = z_near * tan (fov_y * G_PI / 360.0);
cogl_matrix_frustum (matrix,
-ymax * aspect, /* left */
ymax * aspect, /* right */
-ymax, /* bottom */
ymax, /* top */
z_near,
z_far);
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
void
cogl_matrix_ortho (CoglMatrix *matrix,
float left,
float right,
float bottom,
float top,
float near_val,
float far_val)
{
#ifndef USE_MESA_MATRIX_API
CoglMatrix ortho;
/* column 0 */
ortho.xx = 2.0 / (right - left);
ortho.yx = 0.0;
ortho.zx = 0.0;
ortho.wx = 0.0;
/* column 1 */
ortho.xy = 0.0;
ortho.yy = 2.0 / (top - bottom);
ortho.zy = 0.0;
ortho.wy = 0.0;
/* column 2 */
ortho.xz = 0.0;
ortho.yz = 0.0;
ortho.zz = -2.0 / (far_val - near_val);
ortho.wz = 0.0;
/* column 3 */
ortho.xw = -(right + left) / (right - left);
ortho.yw = -(top + bottom) / (top - bottom);
ortho.zw = -(far_val + near_val) / (far_val - near_val);
ortho.ww = 1.0;
cogl_matrix_multiply (matrix, matrix, &ortho);
#else
_math_matrix_ortho (matrix, left, right, bottom, top, near_val, far_val);
#endif
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
void
cogl_matrix_view_2d_in_frustum (CoglMatrix *matrix,
float left,
float right,
float bottom,
float top,
float z_near,
float z_2d,
float width_2d,
float height_2d)
{
float left_2d_plane = left / z_near * z_2d;
float right_2d_plane = right / z_near * z_2d;
float bottom_2d_plane = bottom / z_near * z_2d;
float top_2d_plane = top / z_near * z_2d;
float width_2d_start = right_2d_plane - left_2d_plane;
float height_2d_start = top_2d_plane - bottom_2d_plane;
/* Factors to scale from framebuffer geometry to frustum
* cross-section geometry. */
float width_scale = width_2d_start / width_2d;
float height_scale = height_2d_start / height_2d;
cogl_matrix_translate (matrix,
left_2d_plane, top_2d_plane, -z_2d);
cogl_matrix_scale (matrix, width_scale, -height_scale, width_scale);
}
/* Assuming a symmetric perspective matrix is being used for your
* projective transform this convenience function lets you compose a
* view transform such that geometry on the z=0 plane will map to
* screen coordinates with a top left origin of (0,0) and with the
* given width and height.
*/
void
cogl_matrix_view_2d_in_perspective (CoglMatrix *matrix,
float fov_y,
float aspect,
float z_near,
float z_2d,
float width_2d,
float height_2d)
{
float top = z_near * tan (fov_y * G_PI / 360.0);
cogl_matrix_view_2d_in_frustum (matrix,
-top * aspect,
top * aspect,
-top,
top,
z_near,
z_2d,
width_2d,
height_2d);
}
void
cogl_matrix_init_from_array (CoglMatrix *matrix, const float *array)
{
#ifndef USE_MESA_MATRIX_API
memcpy (matrix, array, sizeof (float) * 16);
#else
_math_matrix_init_from_array (matrix, array);
#endif
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
gboolean
cogl_matrix_equal (gconstpointer v1, gconstpointer v2)
{
const CoglMatrix *a = v1;
const CoglMatrix *b = v2;
g_return_val_if_fail (v1 != NULL, FALSE);
g_return_val_if_fail (v2 != NULL, FALSE);
/* We want to avoid having a fuzzy _equal() function (e.g. that uses
* an arbitrary epsilon value) since this function noteably conforms
* to the prototype suitable for use with g_hash_table_new() and a
* fuzzy hash function isn't really appropriate for comparing hash
* table keys since it's possible that you could end up fetching
* different values if you end up with multiple similar keys in use
* at the same time. If you consider that fuzzyness allows cases
* such as A == B == C but A != C then you could also end up loosing
* values in a hash table.
*
* We do at least use the == operator to compare values though so
* that -0 is considered equal to 0.
*/
/* XXX: We don't compare the flags, inverse matrix or padding */
if (a->xx == b->xx &&
a->xy == b->xy &&
a->xz == b->xz &&
a->xw == b->xw &&
a->yx == b->yx &&
a->yy == b->yy &&
a->yz == b->yz &&
a->yw == b->yw &&
a->zx == b->zx &&
a->zy == b->zy &&
a->zz == b->zz &&
a->zw == b->zw &&
a->wx == b->wx &&
a->wy == b->wy &&
a->wz == b->wz &&
a->ww == b->ww)
return TRUE;
else
return FALSE;
}
CoglMatrix *
cogl_matrix_copy (const CoglMatrix *matrix)
{
if (G_LIKELY (matrix))
return g_slice_dup (CoglMatrix, matrix);
return NULL;
}
void
cogl_matrix_free (CoglMatrix *matrix)
{
g_slice_free (CoglMatrix, matrix);
}
const float *
cogl_matrix_get_array (const CoglMatrix *matrix)
{
return (float *)matrix;
}
gboolean
cogl_matrix_get_inverse (const CoglMatrix *matrix, CoglMatrix *inverse)
{
#ifndef USE_MESA_MATRIX_API
#warning "cogl_matrix_get_inverse not supported without Mesa matrix API"
cogl_matrix_init_identity (inverse);
return FALSE;
#else
if (_math_matrix_update_inverse ((CoglMatrix *)matrix))
{
cogl_matrix_init_from_array (inverse, matrix->inv);
return TRUE;
}
else
{
cogl_matrix_init_identity (inverse);
return FALSE;
}
#endif
}
void
cogl_matrix_transform_point (const CoglMatrix *matrix,
float *x,
float *y,
float *z,
float *w)
{
float _x = *x, _y = *y, _z = *z, _w = *w;
*x = matrix->xx * _x + matrix->xy * _y + matrix->xz * _z + matrix->xw * _w;
*y = matrix->yx * _x + matrix->yy * _y + matrix->yz * _z + matrix->yw * _w;
*z = matrix->zx * _x + matrix->zy * _y + matrix->zz * _z + matrix->zw * _w;
*w = matrix->wx * _x + matrix->wy * _y + matrix->wz * _z + matrix->ww * _w;
}
typedef struct _Point2f
{
float x;
float y;
} Point2f;
typedef struct _Point3f
{
float x;
float y;
float z;
} Point3f;
typedef struct _Point4f
{
float x;
float y;
float z;
float w;
} Point4f;
static void
_cogl_matrix_transform_points_f2 (const CoglMatrix *matrix,
size_t stride_in,
const void *points_in,
size_t stride_out,
void *points_out,
int n_points)
{
int i;
for (i = 0; i < n_points; i++)
{
Point2f p = *(Point2f *)((guint8 *)points_in + i * stride_in);
Point3f *o = (Point3f *)((guint8 *)points_out + i * stride_out);
o->x = matrix->xx * p.x + matrix->xy * p.y + matrix->xw;
o->y = matrix->yx * p.x + matrix->yy * p.y + matrix->yw;
o->z = matrix->zx * p.x + matrix->zy * p.y + matrix->zw;
}
}
static void
_cogl_matrix_project_points_f2 (const CoglMatrix *matrix,
size_t stride_in,
const void *points_in,
size_t stride_out,
void *points_out,
int n_points)
{
int i;
for (i = 0; i < n_points; i++)
{
Point2f p = *(Point2f *)((guint8 *)points_in + i * stride_in);
Point4f *o = (Point4f *)((guint8 *)points_out + i * stride_out);
o->x = matrix->xx * p.x + matrix->xy * p.y + matrix->xw;
o->y = matrix->yx * p.x + matrix->yy * p.y + matrix->yw;
o->z = matrix->zx * p.x + matrix->zy * p.y + matrix->zw;
o->w = matrix->wx * p.x + matrix->wy * p.y + matrix->ww;
}
}
static void
_cogl_matrix_transform_points_f3 (const CoglMatrix *matrix,
size_t stride_in,
const void *points_in,
size_t stride_out,
void *points_out,
int n_points)
{
int i;
for (i = 0; i < n_points; i++)
{
Point3f p = *(Point3f *)((guint8 *)points_in + i * stride_in);
Point3f *o = (Point3f *)((guint8 *)points_out + i * stride_out);
o->x = matrix->xx * p.x + matrix->xy * p.y +
matrix->xz * p.z + matrix->xw;
o->y = matrix->yx * p.x + matrix->yy * p.y +
matrix->yz * p.z + matrix->yw;
o->z = matrix->zx * p.x + matrix->zy * p.y +
matrix->zz * p.z + matrix->zw;
}
}
static void
_cogl_matrix_project_points_f3 (const CoglMatrix *matrix,
size_t stride_in,
const void *points_in,
size_t stride_out,
void *points_out,
int n_points)
{
int i;
for (i = 0; i < n_points; i++)
{
Point3f p = *(Point3f *)((guint8 *)points_in + i * stride_in);
Point4f *o = (Point4f *)((guint8 *)points_out + i * stride_out);
o->x = matrix->xx * p.x + matrix->xy * p.y +
matrix->xz * p.z + matrix->xw;
o->y = matrix->yx * p.x + matrix->yy * p.y +
matrix->yz * p.z + matrix->yw;
o->z = matrix->zx * p.x + matrix->zy * p.y +
matrix->zz * p.z + matrix->zw;
o->w = matrix->wx * p.x + matrix->wy * p.y +
matrix->wz * p.z + matrix->ww;
}
}
static void
_cogl_matrix_project_points_f4 (const CoglMatrix *matrix,
size_t stride_in,
const void *points_in,
size_t stride_out,
void *points_out,
int n_points)
{
int i;
for (i = 0; i < n_points; i++)
{
Point4f p = *(Point4f *)((guint8 *)points_in + i * stride_in);
Point4f *o = (Point4f *)((guint8 *)points_out + i * stride_out);
o->x = matrix->xx * p.x + matrix->xy * p.y +
matrix->xz * p.z + matrix->xw * p.w;
o->y = matrix->yx * p.x + matrix->yy * p.y +
matrix->yz * p.z + matrix->yw * p.w;
o->z = matrix->zx * p.x + matrix->zy * p.y +
matrix->zz * p.z + matrix->zw * p.w;
o->w = matrix->wx * p.x + matrix->wy * p.y +
matrix->wz * p.z + matrix->ww * p.w;
}
}
void
cogl_matrix_transform_points (const CoglMatrix *matrix,
int n_components,
size_t stride_in,
const void *points_in,
size_t stride_out,
void *points_out,
int n_points)
{
/* The results of transforming always have three components... */
g_return_if_fail (stride_out >= sizeof (Point3f));
if (n_components == 2)
_cogl_matrix_transform_points_f2 (matrix,
stride_in, points_in,
stride_out, points_out,
n_points);
else
{
g_return_if_fail (n_components == 3);
_cogl_matrix_transform_points_f3 (matrix,
stride_in, points_in,
stride_out, points_out,
n_points);
}
}
void
cogl_matrix_project_points (const CoglMatrix *matrix,
int n_components,
size_t stride_in,
const void *points_in,
size_t stride_out,
void *points_out,
int n_points)
{
if (n_components == 2)
_cogl_matrix_project_points_f2 (matrix,
stride_in, points_in,
stride_out, points_out,
n_points);
else if (n_components == 3)
_cogl_matrix_project_points_f3 (matrix,
stride_in, points_in,
stride_out, points_out,
n_points);
else
{
g_return_if_fail (n_components == 4);
_cogl_matrix_project_points_f4 (matrix,
stride_in, points_in,
stride_out, points_out,
n_points);
}
}

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@ -1,589 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_MATRIX_H
#define __COGL_MATRIX_H
#include <glib.h>
#include "cogl-types.h"
G_BEGIN_DECLS
/**
* SECTION:cogl-matrix
* @short_description: Fuctions for initializing and manipulating 4x4 matrices
*
* Matrices are used in Cogl to describe affine model-view transforms, texture
* transforms, and projective transforms. This exposes a utility API that can
* be used for direct manipulation of these matrices.
*/
typedef struct _CoglMatrix CoglMatrix;
/**
* CoglMatrix:
*
* A CoglMatrix holds a 4x4 transform matrix. This is a single precision,
* column-major matrix which means it is compatible with what OpenGL expects.
*
* A CoglMatrix can represent transforms such as, rotations, scaling,
* translation, sheering, and linear projections. You can combine these
* transforms by multiplying multiple matrices in the order you want them
* applied.
*
* The transformation of a vertex (x, y, z, w) by a CoglMatrix is given by:
*
* |[
* x_new = xx * x + xy * y + xz * z + xw * w
* y_new = yx * x + yy * y + yz * z + yw * w
* z_new = zx * x + zy * y + zz * z + zw * w
* w_new = wx * x + wy * y + wz * z + ww * w
* ]|
*
* Where w is normally 1
*
* <note>You must consider the members of the CoglMatrix structure read only,
* and all matrix modifications must be done via the cogl_matrix API. This
* allows Cogl to annotate the matrices internally. Violation of this will give
* undefined results. If you need to initialize a matrix with a constant other
* than the identity matrix you can use cogl_matrix_init_from_array().</note>
*/
struct _CoglMatrix
{
/* column 0 */
float xx;
float yx;
float zx;
float wx;
/* column 1 */
float xy;
float yy;
float zy;
float wy;
/* column 2 */
float xz;
float yz;
float zz;
float wz;
/* column 3 */
float xw;
float yw;
float zw;
float ww;
/*< private >*/
/* Note: we may want to extend this later with private flags
* and a cache of the inverse transform matrix. */
float COGL_PRIVATE (inv)[16];
unsigned long COGL_PRIVATE (type);
unsigned long COGL_PRIVATE (flags);
unsigned long COGL_PRIVATE (_padding3);
};
/**
* cogl_matrix_init_identity:
* @matrix: A 4x4 transformation matrix
*
* Resets matrix to the identity matrix:
*
* |[
* .xx=1; .xy=0; .xz=0; .xw=0;
* .yx=0; .yy=1; .yz=0; .yw=0;
* .zx=0; .zy=0; .zz=1; .zw=0;
* .wx=0; .wy=0; .wz=0; .ww=1;
* ]|
*/
void
cogl_matrix_init_identity (CoglMatrix *matrix);
/**
* cogl_matrix_multiply:
* @result: The address of a 4x4 matrix to store the result in
* @a: A 4x4 transformation matrix
* @b: A 4x4 transformation matrix
*
* Multiplies the two supplied matrices together and stores
* the resulting matrix inside @result.
*
* <note>It is possible to multiply the @a matrix in-place, so
* @result can be equal to @a but can't be equal to @b.</note>
*/
void
cogl_matrix_multiply (CoglMatrix *result,
const CoglMatrix *a,
const CoglMatrix *b);
/**
* cogl_matrix_rotate:
* @matrix: A 4x4 transformation matrix
* @angle: The angle you want to rotate in degrees
* @x: X component of your rotation vector
* @y: Y component of your rotation vector
* @z: Z component of your rotation vector
*
* Multiplies @matrix with a rotation matrix that applies a rotation
* of @angle degrees around the specified 3D vector.
*/
void
cogl_matrix_rotate (CoglMatrix *matrix,
float angle,
float x,
float y,
float z);
/**
* cogl_matrix_translate:
* @matrix: A 4x4 transformation matrix
* @x: The X translation you want to apply
* @y: The Y translation you want to apply
* @z: The Z translation you want to apply
*
* Multiplies @matrix with a transform matrix that translates along
* the X, Y and Z axis.
*/
void
cogl_matrix_translate (CoglMatrix *matrix,
float x,
float y,
float z);
/**
* cogl_matrix_scale:
* @matrix: A 4x4 transformation matrix
* @sx: The X scale factor
* @sy: The Y scale factor
* @sz: The Z scale factor
*
* Multiplies @matrix with a transform matrix that scales along the X,
* Y and Z axis.
*/
void
cogl_matrix_scale (CoglMatrix *matrix,
float sx,
float sy,
float sz);
/**
* cogl_matrix_frustum:
* @matrix: A 4x4 transformation matrix
* @left: coord of left vertical clipping plane
* @right: coord of right vertical clipping plane
* @bottom: coord of bottom horizontal clipping plane
* @top: coord of top horizontal clipping plane
* @z_near: positive distance to near depth clipping plane
* @z_far: positive distance to far depth clipping plane
*
* Multiplies @matrix by the given frustum perspective matrix.
*/
void
cogl_matrix_frustum (CoglMatrix *matrix,
float left,
float right,
float bottom,
float top,
float z_near,
float z_far);
/**
* cogl_matrix_perspective:
* @matrix: A 4x4 transformation matrix
* @fov_y: A field of view angle for the Y axis
* @aspect: The ratio of width to height determining the field of view angle
* for the x axis.
* @z_near: The distance to the near clip plane. Never pass 0 and always pass
* a positive number.
* @z_far: The distance to the far clip plane. (Should always be positive)
*
* Multiplies @matrix by the described perspective matrix
*
* <note>You should be careful not to have to great a @z_far / @z_near ratio
* since that will reduce the effectiveness of depth testing since there wont
* be enough precision to identify the depth of objects near to each
* other.</note>
*/
void
cogl_matrix_perspective (CoglMatrix *matrix,
float fov_y,
float aspect,
float z_near,
float z_far);
/**
* cogl_matrix_ortho:
* @matrix: A 4x4 transformation matrix
* @left: The coordinate for the left clipping plane
* @right: The coordinate for the right clipping plane
* @bottom: The coordinate for the bottom clipping plane
* @top: The coordinate for the top clipping plane
* @z_near: The coordinate for the near clipping plane (may be negative if
* the plane is behind the viewer)
* @z_far: The coordinate for the far clipping plane (may be negative if
* the plane is behind the viewer)
*
* Multiplies @matrix by a parallel projection matrix.
*/
void
cogl_matrix_ortho (CoglMatrix *matrix,
float left,
float right,
float bottom,
float top,
float z_near,
float z_far);
#ifdef COGL_ENABLE_EXPERIMENTAL_API
#define cogl_matrix_view_2d_in_frustum cogl_matrix_view_2d_in_frustum_EXP
#define cogl_matrix_view_2d_in_perspective \
cogl_matrix_view_2d_in_perspective_EXP
/**
* cogl_matrix_view_2d_in_frustum:
* @matrix: A 4x4 transformation matrix
* @left: coord of left vertical clipping plane
* @right: coord of right vertical clipping plane
* @bottom: coord of bottom horizontal clipping plane
* @top: coord of top horizontal clipping plane
* @z_near: The distance to the near clip plane. Never pass 0 and always pass
* a positive number.
* @z_2d: The distance to the 2D plane. (Should always be positive and
* be between @z_near and the z_far value that was passed to
* cogl_matrix_frustum())
* @width_2d: The width of the 2D coordinate system
* @height_2d: The height of the 2D coordinate system
*
* Multiplies @matrix by a view transform that maps the 2D coordinates
* (0,0) top left and (@width_2d,@height_2d) bottom right the full viewport
* size. Geometry at a depth of 0 will now lie on this 2D plane.
*
* Note: this doesn't multiply the matrix by any projection matrix,
* but it assumes you have a perspective projection as defined by
* passing the corresponding arguments to cogl_matrix_frustum().
* Toolkits such as Clutter that mix 2D and 3D drawing can use this to
* create a 2D coordinate system within a 3D perspective projected
* view frustum.
*/
void
cogl_matrix_view_2d_in_frustum (CoglMatrix *matrix,
float left,
float right,
float bottom,
float top,
float z_near,
float z_2d,
float width_2d,
float height_2d);
/**
* cogl_matrix_view_2d_in_perspective:
* @fov_y: A field of view angle for the Y axis
* @aspect: The ratio of width to height determining the field of view angle
* for the x axis.
* @z_near: The distance to the near clip plane. Never pass 0 and always pass
* a positive number.
* @z_2d: The distance to the 2D plane. (Should always be positive and
* be between @z_near and the z_far value that was passed to
* cogl_matrix_frustum())
* @width_2d: The width of the 2D coordinate system
* @height_2d: The height of the 2D coordinate system
*
* Multiplies @matrix by a view transform that maps the 2D coordinates
* (0,0) top left and (@width_2d,@height_2d) bottom right the full viewport
* size. Geometry at a depth of 0 will now lie on this 2D plane.
*
* Note: this doesn't multiply the matrix by any projection matrix,
* but it assumes you have a perspective projection as defined by
* passing the corresponding arguments to cogl_matrix_perspective().
*
* Toolkits such as Clutter that mix 2D and 3D drawing can use this to
* create a 2D coordinate system within a 3D perspective projected
* view frustum.
*/
void
cogl_matrix_view_2d_in_perspective (CoglMatrix *matrix,
float fov_y,
float aspect,
float z_near,
float z_2d,
float width_2d,
float height_2d);
#endif
/**
* cogl_matrix_init_from_array:
* @matrix: A 4x4 transformation matrix
* @array: A linear array of 16 floats (column-major order)
*
* Initializes @matrix with the contents of @array
*/
void
cogl_matrix_init_from_array (CoglMatrix *matrix,
const float *array);
/**
* cogl_matrix_get_array:
* @matrix: A 4x4 transformation matrix
*
* Casts @matrix to a float array which can be directly passed to OpenGL.
*
* Return value: a pointer to the float array
*/
G_CONST_RETURN float *
cogl_matrix_get_array (const CoglMatrix *matrix);
/**
* cogl_matrix_equal:
* @v1: A 4x4 transformation matrix
* @v2: A 4x4 transformation matrix
*
* Compares two matrices to see if they represent the same
* transformation. Although internally the matrices may have different
* annotations associated with them and may potentially have a cached
* inverse matrix these are not considered in the comparison.
*
* Since: 1.4
*/
gboolean
cogl_matrix_equal (gconstpointer v1, gconstpointer v2);
/**
* cogl_matrix_copy:
* @matrix: A 4x4 transformation matrix you want to copy
*
* Allocates a new #CoglMatrix on the heap and initializes it with
* the same values as @matrix.
*
* Returns: A newly allocated #CoglMatrix which should be freed using
* cogl_matrix_free()
*
* Since: 1.6
*/
CoglMatrix *
cogl_matrix_copy (const CoglMatrix *matrix);
/**
* cogl_matrix_free:
* @matrix: A 4x4 transformation matrix you want to free
*
* Frees a #CoglMatrix that was previously allocated via a call to
* cogl_matrix_copy().
*
* Since: 1.6
*/
void
cogl_matrix_free (CoglMatrix *matrix);
/**
* cogl_matrix_get_inverse:
* @matrix: A 4x4 transformation matrix
* @inverse: (out): The destination for a 4x4 inverse transformation matrix
*
* Gets the inverse transform of a given matrix and uses it to initialize
* a new #CoglMatrix.
*
* <note>Although the first parameter is annotated as const to indicate
* that the transform it represents isn't modified this function may
* technically save a copy of the inverse transform within the given
* #CoglMatrix so that subsequent requests for the inverse transform may
* avoid costly inversion calculations.</note>
*
* Return value: %TRUE if the inverse was successfully calculated or %FALSE
* for degenerate transformations that can't be inverted (in this case the
* @inverse matrix will simply be initialized with the identity matrix)
*
* Since: 1.2
*/
gboolean
cogl_matrix_get_inverse (const CoglMatrix *matrix,
CoglMatrix *inverse);
/* FIXME: to be consistent with cogl_matrix_{transform,project}_points
* this could be renamed to cogl_matrix_project_point for Cogl 2.0...
*/
/**
* cogl_matrix_transform_point:
* @matrix: A 4x4 transformation matrix
* @x: (inout): The X component of your points position
* @y: (inout): The Y component of your points position
* @z: (inout): The Z component of your points position
* @w: (inout): The W component of your points position
*
* Transforms a point whos position is given and returned as four float
* components.
*/
void
cogl_matrix_transform_point (const CoglMatrix *matrix,
float *x,
float *y,
float *z,
float *w);
#ifdef COGL_ENABLE_EXPERIMENTAL_API
#define cogl_matrix_transform_points cogl_matrix_transform_points_EXP
#define cogl_matrix_project_points cogl_matrix_project_points_EXP
/**
* cogl_matrix_transform_points:
* @matrix: A transformation matrix
* @n_components: The number of position components for each input point.
* (either 2 or 3)
* @stride_in: The stride in bytes between input points.
* @points_in: A pointer to the first component of the first input point.
* @stride_out: The stride in bytes between output points.
* @points_out: A pointer to the first component of the first output point.
* @n_points: The number of points to transform.
*
* Transforms an array of input points and writes the result to
* another array of output points. The input points can either have 2
* or 3 components each. The output points always have 3 components.
* The output array can simply point to the input array to do the
* transform in-place.
*
* If you need to transform 4 component points see
* cogl_matrix_project_points().
*
* Here's an example with differing input/output strides:
* |[
* typedef struct {
* float x,y;
* guint8 r,g,b,a;
* float s,t,p;
* } MyInVertex;
* typedef struct {
* guint8 r,g,b,a;
* float x,y,z;
* } MyOutVertex;
* MyInVertex vertices[N_VERTICES];
* MyOutVertex results[N_VERTICES];
* CoglMatrix matrix;
*
* my_load_vertices (vertices);
* my_get_matrix (&matrix);
*
* cogl_matrix_transform_points (&matrix,
* 2,
* sizeof (MyInVertex),
* &vertices[0].x,
* sizeof (MyOutVertex),
* &results[0].x,
* N_VERTICES);
* ]|
*
* Stability: Unstable
*/
void
cogl_matrix_transform_points (const CoglMatrix *matrix,
int n_components,
size_t stride_in,
const void *points_in,
size_t stride_out,
void *points_out,
int n_points);
/**
* cogl_matrix_project_points:
* @matrix: A projection matrix
* @n_components: The number of position components for each input point.
* (either 2, 3 or 4)
* @stride_in: The stride in bytes between input points.
* @points_in: A pointer to the first component of the first input point.
* @stride_out: The stride in bytes between output points.
* @points_out: A pointer to the first component of the first output point.
* @n_points: The number of points to transform.
*
* Projects an array of input points and writes the result to another
* array of output points. The input points can either have 2, 3 or 4
* components each. The output points always have 4 components (known
* as homogenous coordinates). The output array can simply point to
* the input array to do the transform in-place.
*
* Here's an example with differing input/output strides:
* |[
* typedef struct {
* float x,y;
* guint8 r,g,b,a;
* float s,t,p;
* } MyInVertex;
* typedef struct {
* guint8 r,g,b,a;
* float x,y,z;
* } MyOutVertex;
* MyInVertex vertices[N_VERTICES];
* MyOutVertex results[N_VERTICES];
* CoglMatrix matrix;
*
* my_load_vertices (vertices);
* my_get_matrix (&matrix);
*
* cogl_matrix_project_points (&matrix,
* 2,
* sizeof (MyInVertex),
* &vertices[0].x,
* sizeof (MyOutVertex),
* &results[0].x,
* N_VERTICES);
* ]|
*
* Stability: Unstable
*/
void
cogl_matrix_project_points (const CoglMatrix *matrix,
int n_components,
size_t stride_in,
const void *points_in,
size_t stride_out,
void *points_out,
int n_points);
#endif /* COGL_ENABLE_EXPERIMENTAL_API */
#ifdef _COGL_SUPPORTS_GTYPE_INTEGRATION
#define COGL_GTYPE_TYPE_MATRIX (cogl_gtype_matrix_get_type ())
/**
* cogl_gtype_matrix_get_type:
*
* Returns the GType for the registered "CoglMatrix" boxed type. This
* can be used for example to define GObject properties that accept a
* #CoglMatrix value.
*/
GType
cogl_gtype_matrix_get_type (void);
#endif /* _COGL_SUPPORTS_GTYPE_INTEGRATION */
G_END_DECLS
#endif /* __COGL_MATRIX_H */

276
clutter/cogl/cogl/cogl-object-private.h
View File

@ -1,276 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_OBJECT_PRIVATE_H
#define __COGL_OBJECT_PRIVATE_H
#include <glib.h>
#include "cogl-types.h"
#include "cogl-object.h"
#include "cogl-debug.h"
/* For compatability until all components have been converted */
typedef struct _CoglObjectClass CoglHandleClass;
typedef struct _CoglObject CoglHandleObject;
/* XXX: sadly we didn't fully consider when we copied the cairo API
* for _set_user_data that the callback doesn't get a pointer to the
* instance which is desired in most cases. This means you tend to end
* up creating micro allocations for the private data just so you can
* pair up the data of interest with the original instance for
* identification when it is later destroyed.
*
* Internally we use a small hack to avoid needing these micro
* allocations by actually passing the instance as a second argument
* to the callback */
typedef void (*CoglUserDataDestroyInternalCallback) (void *user_data,
void *instance);
typedef struct _CoglObjectClass
{
GQuark type;
void *virt_free;
} CoglObjectClass;
#define COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES 2
typedef struct
{
CoglUserDataKey *key;
void *user_data;
CoglUserDataDestroyInternalCallback destroy;
} CoglUserDataEntry;
/* All Cogl objects inherit from this base object by adding a member:
*
* CoglObject _parent;
*
* at the top of its main structure. This structure is initialized
* when you call _cogl_#type_name#_object_new (new_object);
*/
struct _CoglObject
{
unsigned int ref_count;
CoglUserDataEntry user_data_entry[
COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES];
GArray *user_data_array;
int n_user_data_entries;
CoglObjectClass *klass;
};
/* Helper macro to encapsulate the common code for COGL reference
counted objects */
#ifdef COGL_OBJECT_DEBUG
#define _COGL_OBJECT_DEBUG_NEW(type_name, obj) \
COGL_NOTE (HANDLE, "COGL " G_STRINGIFY (type_name) " NEW %p %i", \
(obj), (obj)->ref_count)
#define _COGL_OBJECT_DEBUG_REF(type_name, object) G_STMT_START { \
CoglObject *__obj = (CoglObject *)object; \
COGL_NOTE (HANDLE, "COGL %s REF %p %i", \
g_quark_to_string ((__obj)->klass->type), \
(__obj), (__obj)->ref_count); } G_STMT_END
#define _COGL_OBJECT_DEBUG_UNREF(type_name, object) G_STMT_START { \
CoglObject *__obj = (CoglObject *)object; \
COGL_NOTE (HANDLE, "COGL %s UNREF %p %i", \
g_quark_to_string ((__obj)->klass->type), \
(__obj), (__obj)->ref_count - 1); } G_STMT_END
#define COGL_OBJECT_DEBUG_FREE(obj) \
COGL_NOTE (HANDLE, "COGL %s FREE %p", \
g_quark_to_string ((obj)->klass->type), (obj))
#else /* !COGL_OBJECT_DEBUG */
#define _COGL_OBJECT_DEBUG_NEW(type_name, obj)
#define _COGL_OBJECT_DEBUG_REF(type_name, obj)
#define _COGL_OBJECT_DEBUG_UNREF(type_name, obj)
#define COGL_OBJECT_DEBUG_FREE(obj)
#endif /* COGL_OBJECT_DEBUG */
/* For temporary compatability */
#define _COGL_HANDLE_DEBUG_NEW _COGL_OBJECT_DEBUG_NEW
#define _COGL_HANDLE_DEBUG_REF _COGL_OBJECT_DEBUG_REF
#define _COGL_HANDLE_DEBUG_UNREF _COGL_OBJECT_DEBUG_UNREF
#define COGL_HANDLE_DEBUG_FREE COGL_OBJECT_DEBUG_FREE
#define COGL_OBJECT_COMMON_DEFINE_WITH_CODE(TypeName, type_name, code) \
\
static CoglObjectClass _cogl_##type_name##_class; \
\
GQuark \
_cogl_object_##type_name##_get_type (void) \
{ \
static GQuark type = 0; \
if (!type) \
{ \
type = g_quark_from_static_string ("Cogl"#TypeName); \
{ code; } \
} \
return type; \
} \
\
GQuark \
_cogl_handle_##type_name##_get_type (void) \
{ \
return _cogl_object_##type_name##_get_type (); \
} \
\
static Cogl##TypeName * \
_cogl_##type_name##_object_new (Cogl##TypeName *new_obj) \
{ \
CoglObject *obj = (CoglObject *)&new_obj->_parent; \
obj->ref_count = 1; \
obj->n_user_data_entries = 0; \
obj->user_data_array = NULL; \
\
obj->klass = &_cogl_##type_name##_class; \
if (!obj->klass->type) \
{ \
obj->klass->type = _cogl_object_##type_name##_get_type ();\
obj->klass->virt_free = _cogl_##type_name##_free; \
} \
\
_COGL_OBJECT_DEBUG_NEW (TypeName, obj); \
return new_obj; \
} \
\
Cogl##TypeName * \
_cogl_##type_name##_pointer_from_handle (CoglHandle handle) \
{ \
return handle; \
}
#define COGL_OBJECT_DEFINE_WITH_CODE(TypeName, type_name, code) \
\
COGL_OBJECT_COMMON_DEFINE_WITH_CODE(TypeName, type_name, code) \
\
gboolean \
cogl_is_##type_name (void *object) \
{ \
CoglObject *obj = object; \
\
if (object == NULL) \
return FALSE; \
\
return (obj->klass->type == \
_cogl_object_##type_name##_get_type ()); \
}
#define COGL_OBJECT_INTERNAL_DEFINE_WITH_CODE(TypeName, type_name, code) \
\
COGL_OBJECT_COMMON_DEFINE_WITH_CODE(TypeName, type_name, code) \
\
gboolean \
_cogl_is_##type_name (void *object) \
{ \
CoglObject *obj = object; \
\
if (object == NULL) \
return FALSE; \
\
return (obj->klass->type == \
_cogl_object_##type_name##_get_type ()); \
}
#define COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING(type_name) \
\
void * G_GNUC_DEPRECATED \
cogl_##type_name##_ref (void *object) \
{ \
if (!cogl_is_##type_name (object)) \
return NULL; \
\
_COGL_OBJECT_DEBUG_REF (TypeName, object); \
\
cogl_handle_ref (object); \
\
return object; \
} \
\
void G_GNUC_DEPRECATED \
cogl_##type_name##_unref (void *object) \
{ \
if (!cogl_is_##type_name (object)) \
{ \
g_warning (G_STRINGIFY (cogl_##type_name##_unref) \
": Ignoring unref of Cogl handle " \
"due to type mismatch"); \
return; \
} \
\
_COGL_OBJECT_DEBUG_UNREF (TypeName, object); \
\
cogl_handle_unref (object); \
}
#define COGL_OBJECT_DEFINE(TypeName, type_name) \
COGL_OBJECT_DEFINE_WITH_CODE (TypeName, type_name, (void) 0)
#define COGL_OBJECT_INTERNAL_DEFINE(TypeName, type_name) \
COGL_OBJECT_INTERNAL_DEFINE_WITH_CODE (TypeName, type_name, (void) 0)
/* For temporary compatability */
#define COGL_HANDLE_INTERNAL_DEFINE_WITH_CODE(TypeName, type_name, code) \
\
COGL_OBJECT_INTERNAL_DEFINE_WITH_CODE (TypeName, type_name, code) \
\
static Cogl##TypeName * \
_cogl_##type_name##_handle_new (CoglHandle handle) \
{ \
return _cogl_##type_name##_object_new (handle); \
}
#define COGL_HANDLE_DEFINE_WITH_CODE(TypeName, type_name, code) \
\
COGL_OBJECT_DEFINE_WITH_CODE (TypeName, type_name, code) \
\
static Cogl##TypeName * \
_cogl_##type_name##_handle_new (CoglHandle handle) \
{ \
return _cogl_##type_name##_object_new (handle); \
}
#define COGL_HANDLE_INTERNAL_DEFINE(TypeName, type_name) \
COGL_HANDLE_INTERNAL_DEFINE_WITH_CODE (TypeName, type_name, (void) 0)
#define COGL_HANDLE_DEFINE(TypeName, type_name) \
COGL_HANDLE_DEFINE_WITH_CODE (TypeName, type_name, (void) 0)
void
_cogl_object_set_user_data (CoglObject *object,
CoglUserDataKey *key,
void *user_data,
CoglUserDataDestroyInternalCallback destroy);
#endif /* __COGL_OBJECT_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <string.h>
#include "cogl-types.h"
#include "cogl-object-private.h"
void *
cogl_object_ref (void *object)
{
CoglObject *obj = object;
g_return_val_if_fail (object != NULL, NULL);
obj->ref_count++;
return object;
}
CoglHandle
cogl_handle_ref (CoglHandle handle)
{
return cogl_object_ref (handle);
}
void
cogl_object_unref (void *object)
{
CoglObject *obj = object;
g_return_if_fail (object != NULL);
g_return_if_fail (obj->ref_count > 0);
if (--obj->ref_count < 1)
{
void (*free_func)(void *obj);
if (obj->n_user_data_entries)
{
int i;
int count = MIN (obj->n_user_data_entries,
COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES);
for (i = 0; i < count; i++)
{
CoglUserDataEntry *entry = &obj->user_data_entry[i];
if (entry->destroy)
entry->destroy (entry->user_data, obj);
}
if (obj->user_data_array != NULL)
{
for (i = 0; i < obj->user_data_array->len; i++)
{
CoglUserDataEntry *entry =
&g_array_index (obj->user_data_array,
CoglUserDataEntry, i);
if (entry->destroy)
entry->destroy (entry->user_data, obj);
}
g_array_free (obj->user_data_array, TRUE);
}
}
COGL_OBJECT_DEBUG_FREE (obj);
free_func = obj->klass->virt_free;
free_func (obj);
}
}
void
cogl_handle_unref (CoglHandle handle)
{
cogl_object_unref (handle);
}
GType
cogl_handle_get_type (void)
{
static GType our_type = 0;
/* XXX: We are keeping the "CoglHandle" name for now incase it would
* break bindings to change to "CoglObject" */
if (G_UNLIKELY (our_type == 0))
our_type = g_boxed_type_register_static (g_intern_static_string ("CoglHandle"),
(GBoxedCopyFunc) cogl_object_ref,
(GBoxedFreeFunc) cogl_object_unref);
return our_type;
}
/* XXX: Unlike for cogl_object_get_user_data this code will return
* an empty entry if available and no entry for the given key can be
* found. */
static CoglUserDataEntry *
_cogl_object_find_entry (CoglObject *object, CoglUserDataKey *key)
{
CoglUserDataEntry *entry = NULL;
int count;
int i;
count = MIN (object->n_user_data_entries,
COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES);
for (i = 0; i < count; i++)
{
CoglUserDataEntry *current = &object->user_data_entry[i];
if (current->key == key)
return current;
if (current->user_data == NULL)
entry = current;
}
if (G_UNLIKELY (object->user_data_array != NULL))
{
for (i = 0; i < object->user_data_array->len; i++)
{
CoglUserDataEntry *current =
&g_array_index (object->user_data_array, CoglUserDataEntry, i);
if (current->key == key)
return current;
if (current->user_data == NULL)
entry = current;
}
}
return entry;
}
void
_cogl_object_set_user_data (CoglObject *object,
CoglUserDataKey *key,
void *user_data,
CoglUserDataDestroyInternalCallback destroy)
{
CoglUserDataEntry new_entry;
CoglUserDataEntry *entry;
if (user_data)
{
new_entry.key = key;
new_entry.user_data = user_data;
new_entry.destroy = destroy;
}
else
memset (&new_entry, 0, sizeof (new_entry));
entry = _cogl_object_find_entry (object, key);
if (entry)
{
if (G_LIKELY (entry->destroy))
entry->destroy (entry->user_data, object);
}
else
{
if (G_LIKELY (object->n_user_data_entries <
COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES))
entry = &object->user_data_entry[object->n_user_data_entries++];
else
{
if (G_UNLIKELY (object->user_data_array == NULL))
{
object->user_data_array =
g_array_new (FALSE, FALSE, sizeof (CoglUserDataEntry));
}
g_array_set_size (object->user_data_array,
object->user_data_array->len + 1);
entry =
&g_array_index (object->user_data_array, CoglUserDataEntry,
object->user_data_array->len - 1);
object->n_user_data_entries++;
}
}
*entry = new_entry;
}
void
cogl_object_set_user_data (CoglObject *object,
CoglUserDataKey *key,
void *user_data,
CoglUserDataDestroyCallback destroy)
{
_cogl_object_set_user_data (object, key, user_data,
(CoglUserDataDestroyInternalCallback)destroy);
}
void *
cogl_object_get_user_data (CoglObject *object, CoglUserDataKey *key)
{
int count;
int i;
count = MIN (object->n_user_data_entries,
COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES);
for (i = 0; i < count; i++)
{
CoglUserDataEntry *entry = &object->user_data_entry[i];
if (entry->key == key)
return entry->user_data;
}
if (object->user_data_array != NULL)
{
for (i = 0; i < object->user_data_array->len; i++)
{
CoglUserDataEntry *entry =
&g_array_index (object->user_data_array, CoglUserDataEntry, i);
if (entry->key == key)
return entry->user_data;
}
}
return NULL;
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2009,2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_OBJECT_H
#define __COGL_OBJECT_H
typedef struct _CoglObject CoglObject;
#define COGL_OBJECT(X) ((CoglObject *)X)
/**
* CoglUserDataKey:
* @unused: ignored.
*
* A #CoglUserDataKey is used to declare a key for attaching data to a
* #CoglObject using cogl_object_set_user_data. The typedef only exists as a
* formality to make code self documenting since only the unique address of a
* #CoglUserDataKey is used.
*
* Typically you would declare a static #CoglUserDataKey and set private data
* on an object something like this:
*
* |[
* static CoglUserDataKey path_private_key;
*
* static void
* destroy_path_private_cb (void *data)
* {
* g_free (data);
* }
*
* static void
* my_path_set_data (CoglPath *path, void *data)
* {
* cogl_object_set_user_data (COGL_OBJECT (path),
* &private_key,
* data,
* destroy_path_private_cb);
* }
* ]|
*
* Since: 1.4
*/
typedef struct
{
int unused;
} CoglUserDataKey;
/**
* CoglUserDataDestroyCallback:
* @user_data: The data whos association with a #CoglObject has been
* destoyed.
*
* When associating private data with a #CoglObject a callback can be
* given which will be called either if the object is destroyed or if
* cogl_object_set_user_data() is called with NULL user_data for the
* same key.
*
* Since: 1.4
*/
typedef void (*CoglUserDataDestroyCallback) (void *user_data);
/**
* cogl_object_set_user_data: (skip)
* @object: The object to associate private data with
* @key: The address of a #CoglUserDataKey which provides a unique value
* with which to index the private data.
* @user_data: The data to associate with the given object,
* or %NULL to remove a previous association.
* @destroy: A #CoglUserDataDestroyCallback to call if the object is
* destroyed or if the association is removed by later setting
* %NULL data for the same key.
*
* Associates some private @user_data with a given #CoglObject. To
* later remove the association call cogl_object_set_user_data() with
* the same @key but NULL for the @user_data.
*
* Since: 1.4
*/
void
cogl_object_set_user_data (CoglObject *object,
CoglUserDataKey *key,
void *user_data,
CoglUserDataDestroyCallback destroy);
/**
* cogl_object_get_user_data: (skip)
* @object: The object with associated private data to query
* @key: The address of a #CoglUserDataKey which provides a unique value
* with which to index the private data.
*
* Finds the user data previously associated with @object using
* the given @key. If no user data has been associated with @object
* for the given @key this function returns NULL.
*
* Returns: (transfer none): The user data previously associated
* with @object using the given @key; or %NULL if no associated
* data is found.
*
* Since: 1.4
*/
void *
cogl_object_get_user_data (CoglObject *object,
CoglUserDataKey *key);
#endif /* __COGL_OBJECT_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_OFFSCREEN_H__
#define __COGL_OFFSCREEN_H__
#include <cogl/cogl-types.h>
G_BEGIN_DECLS
/**
* SECTION:cogl-offscreen
* @short_description: Fuctions for creating and manipulating offscreen
* framebuffers.
*
* Cogl allows creating and operating on offscreen framebuffers.
*/
/* Offscreen api */
/**
* cogl_offscreen_new_to_texture:
* @handle: A CoglHandle for a Cogl texture
*
* This creates an offscreen buffer object using the given texture as the
* primary color buffer. It doesn't just initialize the contents of the
* offscreen buffer with the texture; they are tightly bound so that
* drawing to the offscreen buffer effectivly updates the contents of the
* given texture. You don't need to destroy the offscreen buffer before
* you can use the texture again.
*
* Note: This does not work with sliced Cogl textures.
*
* Return value: (transfer full): a #CoglHandle for the new offscreen
* buffer or %COGL_INVALID_HANDLE if it wasn't possible to create the
* buffer.
*/
CoglHandle cogl_offscreen_new_to_texture (CoglHandle handle);
/**
* cogl_is_offscreen:
* @handle: A CoglHandle for an offscreen buffer
*
* Determines whether the given #CoglHandle references an offscreen buffer
* object.
*
* Returns: %TRUE if the handle references an offscreen buffer,
* %FALSE otherwise
*/
gboolean cogl_is_offscreen (CoglHandle handle);
#ifndef COGL_DISABLE_DEPRECATED
/**
* cogl_offscreen_ref:
* @handle: A CoglHandle for an offscreen buffer
*
* Increments the reference count on the offscreen buffer.
*
* Return value: (transfer none): For convenience it returns the given CoglHandle
*
* Deprecated: 1.2: cogl_handle_ref() should be used in new code.
*/
CoglHandle cogl_offscreen_ref (CoglHandle handle) G_GNUC_DEPRECATED;
/**
* cogl_offscreen_unref:
* @handle: A CoglHandle for an offscreen buffer
*
* Decreases the reference count for the offscreen buffer and frees it when
* the count reaches 0.
*
* Deprecated: 1.2: cogl_handle_unref() should be used in new code.
*/
void cogl_offscreen_unref (CoglHandle handle) G_GNUC_DEPRECATED;
#endif /* COGL_DISABLE_DEPRECATED */
G_END_DECLS
#endif /* __COGL_OFFSCREEN_H__ */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_ONSCREEN_TEMPLATE_PRIVATE_H
#define __COGL_ONSCREEN_TEMPLATE_PRIVATE_H
#include "cogl-object-private.h"
#include "cogl-swap-chain.h"
struct _CoglOnscreenTemplate
{
CoglObject _parent;
CoglSwapChain *swap_chain;
};
#endif /* __COGL_ONSCREEN_TEMPLATE_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-object.h"
#include "cogl-onscreen-template-private.h"
static void _cogl_onscreen_template_free (CoglOnscreenTemplate *onscreen_template);
COGL_OBJECT_DEFINE (OnscreenTemplate, onscreen_template);
GQuark
cogl_onscreen_template_error_quark (void)
{
return g_quark_from_static_string ("cogl-onscreen-template-error-quark");
}
static void
_cogl_onscreen_template_free (CoglOnscreenTemplate *onscreen_template)
{
g_slice_free (CoglOnscreenTemplate, onscreen_template);
}
CoglOnscreenTemplate *
cogl_onscreen_template_new (CoglSwapChain *swap_chain)
{
CoglOnscreenTemplate *onscreen_template = g_slice_new0 (CoglOnscreenTemplate);
onscreen_template->swap_chain = swap_chain;
if (swap_chain)
cogl_object_ref (swap_chain);
return _cogl_onscreen_template_object_new (onscreen_template);
}

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_ONSCREEN_TEMPLATE_H__
#define __COGL_ONSCREEN_TEMPLATE_H__
#include <cogl/cogl-swap-chain.h>
G_BEGIN_DECLS
typedef struct _CoglOnscreenTemplate CoglOnscreenTemplate;
#define COGL_ONSCREEN_TEMPLATE(OBJECT) ((CoglOnscreenTemplate *)OBJECT)
#define cogl_onscreen_template_new cogl_onscreen_template_new_EXP
CoglOnscreenTemplate *
cogl_onscreen_template_new (CoglSwapChain *swap_chain);
G_END_DECLS
#endif /* __COGL_ONSCREEN_TEMPLATE_H__ */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifndef __COGL_PATH_PRIVATE_H
#define __COGL_PATH_PRIVATE_H
#include "cogl-object.h"
typedef struct _floatVec2
{
float x;
float y;
} floatVec2;
typedef struct _CoglPathNode
{
float x;
float y;
unsigned int path_size;
} CoglPathNode;
typedef struct _CoglBezQuad
{
floatVec2 p1;
floatVec2 p2;
floatVec2 p3;
} CoglBezQuad;
typedef struct _CoglBezCubic
{
floatVec2 p1;
floatVec2 p2;
floatVec2 p3;
floatVec2 p4;
} CoglBezCubic;
typedef struct _CoglPathData CoglPathData;
struct _CoglPath
{
CoglObject _parent;
CoglPathData *data;
};
#define COGL_PATH_N_ATTRIBUTES 2
struct _CoglPathData
{
unsigned int ref_count;
CoglPathFillRule fill_rule;
GArray *path_nodes;
floatVec2 path_start;
floatVec2 path_pen;
unsigned int last_path;
floatVec2 path_nodes_min;
floatVec2 path_nodes_max;
CoglVertexArray *fill_vbo;
CoglIndices *fill_vbo_indices;
unsigned int fill_vbo_n_indices;
CoglAttribute *fill_vbo_attributes[COGL_PATH_N_ATTRIBUTES + 1];
CoglVertexArray *stroke_vbo;
CoglAttribute **stroke_vbo_attributes;
unsigned int stroke_vbo_n_attributes;
/* This is used as an optimisation for when the path contains a
single contour specified using cogl2_path_rectangle. Cogl is more
optimised to handle rectangles than paths so we can detect this
case and divert to the journal or a rectangle clip. If it is TRUE
then the entire path can be described by calling
_cogl_path_get_bounds */
gboolean is_rectangle;
};
void
_cogl_add_path_to_stencil_buffer (CoglPath *path,
gboolean merge,
gboolean need_clear);
void
_cogl_path_get_bounds (CoglPath *path,
float *min_x,
float *min_y,
float *max_x,
float *max_y);
gboolean
_cogl_path_is_rectangle (CoglPath *path);
#endif /* __COGL_PATH_PRIVATE_H */

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-context-private.h"
#include "cogl2-path.h"
#include <string.h>
#include <math.h>
#undef cogl_path_set_fill_rule
void
cogl_path_set_fill_rule (CoglPathFillRule fill_rule)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_set_fill_rule (ctx->current_path, fill_rule);
}
#undef cogl_path_get_fill_rule
CoglPathFillRule
cogl_path_get_fill_rule (void)
{
_COGL_GET_CONTEXT (ctx, COGL_PATH_FILL_RULE_EVEN_ODD);
return cogl2_path_get_fill_rule (ctx->current_path);
}
#undef cogl_path_fill
void
cogl_path_fill (void)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_fill (ctx->current_path);
cogl_object_unref (ctx->current_path);
ctx->current_path = cogl2_path_new ();
}
#undef cogl_path_fill_preserve
void
cogl_path_fill_preserve (void)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_fill (ctx->current_path);
}
#undef cogl_path_stroke
void
cogl_path_stroke (void)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_stroke (ctx->current_path);
cogl_object_unref (ctx->current_path);
ctx->current_path = cogl2_path_new ();
}
#undef cogl_path_stroke_preserve
void
cogl_path_stroke_preserve (void)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_stroke (ctx->current_path);
}
#undef cogl_path_move_to
void
cogl_path_move_to (float x,
float y)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_move_to (ctx->current_path, x, y);
}
#undef cogl_path_rel_move_to
void
cogl_path_rel_move_to (float x,
float y)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_rel_move_to (ctx->current_path, x, y);
}
#undef cogl_path_line_to
void
cogl_path_line_to (float x,
float y)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_line_to (ctx->current_path, x, y);
}
#undef cogl_path_rel_line_to
void
cogl_path_rel_line_to (float x,
float y)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_rel_line_to (ctx->current_path, x, y);
}
#undef cogl_path_close
void
cogl_path_close (void)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_close (ctx->current_path);
}
#undef cogl_path_new
void
cogl_path_new (void)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl_object_unref (ctx->current_path);
ctx->current_path = cogl2_path_new ();
}
#undef cogl_path_line
void
cogl_path_line (float x_1,
float y_1,
float x_2,
float y_2)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_line (ctx->current_path, x_1, y_1, x_2, y_2);
}
#undef cogl_path_polyline
void
cogl_path_polyline (const float *coords,
int num_points)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_polyline (ctx->current_path, coords, num_points);
}
#undef cogl_path_polygon
void
cogl_path_polygon (const float *coords,
int num_points)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_polygon (ctx->current_path, coords, num_points);
}
#undef cogl_path_rectangle
void
cogl_path_rectangle (float x_1,
float y_1,
float x_2,
float y_2)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_rectangle (ctx->current_path, x_1, y_1, x_2, y_2);
}
#undef cogl_path_arc
void
cogl_path_arc (float center_x,
float center_y,
float radius_x,
float radius_y,
float angle_1,
float angle_2)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_arc (ctx->current_path,
center_x,
center_y,
radius_x,
radius_y,
angle_1,
angle_2);
}
#undef cogl_path_ellipse
void
cogl_path_ellipse (float center_x,
float center_y,
float radius_x,
float radius_y)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_ellipse (ctx->current_path,
center_x,
center_y,
radius_x,
radius_y);
}
#undef cogl_path_round_rectangle
void
cogl_path_round_rectangle (float x_1,
float y_1,
float x_2,
float y_2,
float radius,
float arc_step)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_round_rectangle (ctx->current_path,
x_1, y_1, x_2, y_2, radius, arc_step);
}
#undef cogl_path_curve_to
void
cogl_path_curve_to (float x_1,
float y_1,
float x_2,
float y_2,
float x_3,
float y_3)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_curve_to (ctx->current_path,
x_1, y_2, x_2, y_2, x_3, y_3);
}
#undef cogl_path_rel_curve_to
void
cogl_path_rel_curve_to (float x_1,
float y_1,
float x_2,
float y_2,
float x_3,
float y_3)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl2_path_rel_curve_to (ctx->current_path,
x_1, y_1, x_2, y_2, x_3, y_3);
}
CoglPath *
cogl_get_path (void)
{
_COGL_GET_CONTEXT (ctx, NULL);
return ctx->current_path;
}
void
cogl_set_path (CoglPath *path)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
g_return_if_fail (cogl_is_path (path));
/* Reference the new object first in case it is the same as the old
object */
cogl_object_ref (path);
cogl_object_unref (ctx->current_path);
ctx->current_path = path;
}

491
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@ -1,491 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_PATH_H__
#define __COGL_PATH_H__
#include <cogl/cogl-types.h>
G_BEGIN_DECLS
/**
* SECTION:cogl-paths
* @short_description: Functions for constructing and drawing 2D paths.
*
* There are two levels on which drawing with cogl-paths can be used.
* The highest level functions construct various simple primitive
* shapes to be either filled or stroked. Using a lower-level set of
* functions more complex and arbitrary paths can be constructed by
* concatenating straight line, bezier curve and arc segments.
*
* When constructing arbitrary paths, the current pen location is
* initialized using the move_to command. The subsequent path segments
* implicitly use the last pen location as their first vertex and move
* the pen location to the last vertex they produce at the end. Also
* there are special versions of functions that allow specifying the
* vertices of the path segments relative to the last pen location
* rather then in the absolute coordinates.
*/
typedef struct _CoglPath CoglPath;
#define COGL_PATH(obj) ((CoglPath *)(obj))
/**
* CoglPathFillRule:
* @COGL_PATH_FILL_RULE_NON_ZERO: Each time the line crosses an edge of
* the path from left to right one is added to a counter and each time
* it crosses from right to left the counter is decremented. If the
* counter is non-zero then the point will be filled. See <xref
* linkend="fill-rule-non-zero"/>.
* @COGL_PATH_FILL_RULE_EVEN_ODD: If the line crosses an edge of the
* path an odd number of times then the point will filled, otherwise
* it won't. See <xref linkend="fill-rule-even-odd"/>.
*
* #CoglPathFillRule is used to determine how a path is filled. There
* are two options - 'non-zero' and 'even-odd'. To work out whether any
* point will be filled imagine drawing an infinetely long line in any
* direction from that point. The number of times and the direction
* that the edges of the path crosses this line determines whether the
* line is filled as described below. Any open sub paths are treated
* as if there was an extra line joining the first point and the last
* point.
*
* The default fill rule is %COGL_PATH_FILL_RULE_EVEN_ODD. The fill
* rule is attached to the current path so preserving a path with
* cogl_get_path() also preserves the fill rule. Calling
* cogl_path_new() resets the current fill rule to the default.
*
* <figure id="fill-rule-non-zero">
* <title>Example of filling various paths using the non-zero rule</title>
* <graphic fileref="fill-rule-non-zero.png" format="PNG"/>
* </figure>
*
* <figure id="fill-rule-even-odd">
* <title>Example of filling various paths using the even-odd rule</title>
* <graphic fileref="fill-rule-even-odd.png" format="PNG"/>
* </figure>
*
* Since: 1.4
*/
typedef enum {
COGL_PATH_FILL_RULE_NON_ZERO,
COGL_PATH_FILL_RULE_EVEN_ODD
} CoglPathFillRule;
/**
* cogl_is_path:
* @handle: A CoglHandle
*
* Gets whether the given handle references an existing path object.
*
* Return value: %TRUE if the handle references a #CoglPath,
* %FALSE otherwise
*/
gboolean
cogl_is_path (CoglHandle handle);
/**
* cogl_path_set_fill_rule:
* @fill_rule: The new fill rule.
*
* Sets the fill rule of the current path to @fill_rule. This will
* affect how the path is filled when cogl_path_fill() is later
* called. Note that the fill rule state is attached to the path so
* calling cogl_get_path() will preserve the fill rule and calling
* cogl_path_new() will reset the fill rule back to the default.
*
* Since: 1.4
*/
void
cogl_path_set_fill_rule (CoglPathFillRule fill_rule);
/**
* cogl_path_get_fill_rule:
*
* Retrieves the fill rule set using cogl_path_set_fill_rule().
*
* Return value: the fill rule that is used for the current path.
*
* Since: 1.4
*/
CoglPathFillRule
cogl_path_get_fill_rule (void);
/**
* cogl_path_fill:
*
* Fills the interior of the constructed shape using the current
* drawing color. The current path is then cleared. To use the path
* again, call cogl_path_fill_preserve() instead.
*
* The interior of the shape is determined using the fill rule of the
* path. See %CoglPathFillRule for details.
**/
void
cogl_path_fill (void);
/**
* cogl_path_fill_preserve:
*
* Fills the interior of the constructed shape using the current
* drawing color and preserves the path to be used again. See
* cogl_path_fill() for a description what is considered the interior
* of the shape.
*
* Since: 1.0
**/
void
cogl_path_fill_preserve (void);
/**
* cogl_path_stroke:
*
* Strokes the constructed shape using the current drawing color and a
* width of 1 pixel (regardless of the current transformation
* matrix). To current path is then cleared. To use the path again,
* call cogl_path_stroke_preserve() instead.
**/
void
cogl_path_stroke (void);
/**
* cogl_path_stroke_preserve:
*
* Strokes the constructed shape using the current drawing color and
* preserves the path to be used again.
*
* Since: 1.0
**/
void
cogl_path_stroke_preserve (void);
/**
* cogl_path_new:
*
* Clears the current path and starts a new one. Creating a new path
* also resets the fill rule to the default which is
* %COGL_PATH_FILL_RULE_EVEN_ODD.
*
* Since: 1.0
*/
void
cogl_path_new (void);
/**
* cogl_path_move_to:
* @x: X coordinate of the pen location to move to.
* @y: Y coordinate of the pen location to move to.
*
* Moves the pen to the given location. If there is an existing path
* this will start a new disjoint subpath.
**/
void
cogl_path_move_to (float x,
float y);
/**
* cogl_path_rel_move_to:
* @x: X offset from the current pen location to move the pen to.
* @y: Y offset from the current pen location to move the pen to.
*
* Moves the pen to the given offset relative to the current pen
* location. If there is an existing path this will start a new
* disjoint subpath.
**/
void
cogl_path_rel_move_to (float x,
float y);
/**
* cogl_path_line_to:
* @x: X coordinate of the end line vertex
* @y: Y coordinate of the end line vertex
*
* Adds a straight line segment to the current path that ends at the
* given coordinates.
**/
void
cogl_path_line_to (float x,
float y);
/**
* cogl_path_rel_line_to:
* @x: X offset from the current pen location of the end line vertex
* @y: Y offset from the current pen location of the end line vertex
*
* Adds a straight line segment to the current path that ends at the
* given coordinates relative to the current pen location.
**/
void
cogl_path_rel_line_to (float x,
float y);
/**
* cogl_path_arc:
* @center_x: X coordinate of the elliptical arc center
* @center_y: Y coordinate of the elliptical arc center
* @radius_x: X radius of the elliptical arc
* @radius_y: Y radius of the elliptical arc
* @angle_1: Angle in degrees at which the arc begin
* @angle_2: Angle in degrees at which the arc ends
*
* Adds an elliptical arc segment to the current path. A straight line
* segment will link the current pen location with the first vertex
* of the arc. If you perform a move_to to the arcs start just before
* drawing it you create a free standing arc.
*
* The angles are measured in degrees where 0° is in the direction of
* the positive X axis and 90° is in the direction of the positive Y
* axis. The angle of the arc begins at @angle_1 and heads towards
* @angle_2 (so if @angle_2 is less than @angle_1 it will decrease,
* otherwise it will increase).
**/
void
cogl_path_arc (float center_x,
float center_y,
float radius_x,
float radius_y,
float angle_1,
float angle_2);
/**
* cogl_path_curve_to:
* @x_1: X coordinate of the second bezier control point
* @y_1: Y coordinate of the second bezier control point
* @x_2: X coordinate of the third bezier control point
* @y_2: Y coordinate of the third bezier control point
* @x_3: X coordinate of the fourth bezier control point
* @y_3: Y coordinate of the fourth bezier control point
*
* Adds a cubic bezier curve segment to the current path with the given
* second, third and fourth control points and using current pen location
* as the first control point.
**/
void
cogl_path_curve_to (float x_1,
float y_1,
float x_2,
float y_2,
float x_3,
float y_3);
/**
* cogl_path_rel_curve_to:
* @x_1: X coordinate of the second bezier control point
* @y_1: Y coordinate of the second bezier control point
* @x_2: X coordinate of the third bezier control point
* @y_2: Y coordinate of the third bezier control point
* @x_3: X coordinate of the fourth bezier control point
* @y_3: Y coordinate of the fourth bezier control point
*
* Adds a cubic bezier curve segment to the current path with the given
* second, third and fourth control points and using current pen location
* as the first control point. The given coordinates are relative to the
* current pen location.
*/
void
cogl_path_rel_curve_to (float x_1,
float y_1,
float x_2,
float y_2,
float x_3,
float y_3);
/**
* cogl_path_close:
*
* Closes the path being constructed by adding a straight line segment
* to it that ends at the first vertex of the path.
**/
void
cogl_path_close (void);
/**
* cogl_path_line:
* @x_1: X coordinate of the start line vertex
* @y_1: Y coordinate of the start line vertex
* @x_2: X coordinate of the end line vertex
* @y_2: Y coordinate of the end line vertex
*
* Constructs a straight line shape starting and ending at the given
* coordinates. If there is an existing path this will start a new
* disjoint sub-path.
**/
void
cogl_path_line (float x_1,
float y_1,
float x_2,
float y_2);
/**
* cogl_path_polyline:
* @coords: (in) (array) (transfer none): A pointer to the first element of an
* array of fixed-point values that specify the vertex coordinates.
* @num_points: The total number of vertices.
*
* Constructs a series of straight line segments, starting from the
* first given vertex coordinate. If there is an existing path this
* will start a new disjoint sub-path. Each subsequent segment starts
* where the previous one ended and ends at the next given vertex
* coordinate.
*
* The coords array must contain 2 * num_points values. The first value
* represents the X coordinate of the first vertex, the second value
* represents the Y coordinate of the first vertex, continuing in the same
* fashion for the rest of the vertices. (num_points - 1) segments will
* be constructed.
**/
void
cogl_path_polyline (const float *coords,
int num_points);
/**
* cogl_path_polygon:
* @coords: (in) (array) (transfer none): A pointer to the first element of
* an array of fixed-point values that specify the vertex coordinates.
* @num_points: The total number of vertices.
*
* Constructs a polygonal shape of the given number of vertices. If
* there is an existing path this will start a new disjoint sub-path.
*
* The coords array must contain 2 * num_points values. The first value
* represents the X coordinate of the first vertex, the second value
* represents the Y coordinate of the first vertex, continuing in the same
* fashion for the rest of the vertices.
**/
void
cogl_path_polygon (const float *coords,
int num_points);
/**
* cogl_path_rectangle:
* @x_1: X coordinate of the top-left corner.
* @y_1: Y coordinate of the top-left corner.
* @x_2: X coordinate of the bottom-right corner.
* @y_2: Y coordinate of the bottom-right corner.
*
* Constructs a rectangular shape at the given coordinates. If there
* is an existing path this will start a new disjoint sub-path.
**/
void
cogl_path_rectangle (float x_1,
float y_1,
float x_2,
float y_2);
/**
* cogl_path_ellipse:
* @center_x: X coordinate of the ellipse center
* @center_y: Y coordinate of the ellipse center
* @radius_x: X radius of the ellipse
* @radius_y: Y radius of the ellipse
*
* Constructs an ellipse shape. If there is an existing path this will
* start a new disjoint sub-path.
**/
void
cogl_path_ellipse (float center_x,
float center_y,
float radius_x,
float radius_y);
/**
* cogl_path_round_rectangle:
* @x_1: X coordinate of the top-left corner.
* @y_1: Y coordinate of the top-left corner.
* @x_2: X coordinate of the bottom-right corner.
* @y_2: Y coordinate of the bottom-right corner.
* @radius: Radius of the corner arcs.
* @arc_step: Angle increment resolution for subdivision of
* the corner arcs.
*
* Constructs a rectangular shape with rounded corners. If there is an
* existing path this will start a new disjoint sub-path.
**/
void
cogl_path_round_rectangle (float x_1,
float y_1,
float x_2,
float y_2,
float radius,
float arc_step);
/**
* cogl_get_path: (skip)
*
* Gets a pointer to the current path. The path can later be used
* again by calling cogl_path_set(). Note that the path isn't copied
* so if you later call any functions to add to the path it will
* affect the returned object too. No reference is taken on the path
* so if you want to retain it you should take your own reference with
* cogl_object_ref().
*
* Return value: a pointer to the current path.
*
* Since: 1.4
*/
CoglPath *
cogl_get_path (void);
/**
* cogl_set_path: (skip)
* @path: A #CoglPath object
*
* Replaces the current path with @path. A reference is taken on the
* object so if you no longer need the path you should unref with
* cogl_object_unref().
*
* Since: 1.4
*/
void
cogl_set_path (CoglPath *path);
/**
* cogl_path_copy: (skip)
* @path: A #CoglPath object
*
* Returns a new copy of the path in @path. The new path has a
* reference count of 1 so you should unref it with
* cogl_object_unref() if you no longer need it.
*
* Internally the path will share the data until one of the paths is
* modified so copying paths should be relatively cheap.
*
* Return value: (transfer full): a copy of the path in @path.
*/
CoglPath *
cogl_path_copy (CoglPath *path);
G_END_DECLS
#endif /* __COGL_PATH_H__ */

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clutter/cogl/cogl/cogl-pipeline-fragend-arbfp-private.h
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@ -1,43 +0,0 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_PIPELINE_FRAGEND_ARBFP_PRIVATE_H
#define __COGL_PIPELINE_FRAGEND_ARBFP_PRIVATE_H
#include "cogl-pipeline-private.h"
extern const CoglPipelineFragend _cogl_pipeline_arbfp_fragend;
unsigned int
_cogl_pipeline_fragend_arbfp_hash (const void *pipeline);
gboolean
_cogl_pipeline_fragend_arbfp_equal (const void *pipeline0,
const void *pipeline1);
#endif /* __COGL_PIPELINE_ARBFP_PRIVATE_H */

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