Adds libcogl-gles2 frontend GLES2 api

This adds a library that can be used instead of libGLESv2.so to provide
symbols for the GLES 2.0 api. This can be used for convenience when
using the cogl_gles2_context_ api since you don't need to manually go
through a CoglGLES2Vtable when calling the gles2 api so it should be
easier to port existing gles2 code to integrate with Cogl.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 80d7599a2acefca7d01d8d7de9df524278ef72c5)
This commit is contained in:
Robert Bragg 2012-03-24 01:41:48 +00:00
parent 010d16f647
commit 10340a5495
11 changed files with 2810 additions and 3 deletions

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@ -4,6 +4,10 @@ if BUILD_COGL_PANGO
SUBDIRS += cogl-pango
endif
if BUILD_COGL_GLES2
SUBDIRS += cogl-gles2
endif
SUBDIRS += examples doc po build
ACLOCAL_AMFLAGS = -I build/autotools ${ACLOCAL_FLAGS}

169
cogl-gles2/GLES2/gl2.h Normal file
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@ -0,0 +1,169 @@
#ifndef __gl2_h_
#define __gl2_h_
/* $Revision: 16803 $ on $Date:: 2012-02-02 09:49:18 -0800 #$ */
#include <GLES2/gl2platform.h>
#include <cogl/cogl-gles2-types.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* This document is licensed under the SGI Free Software B License Version
* 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
*/
/*-------------------------------------------------------------------------
* GL core functions.
*-----------------------------------------------------------------------*/
GL_APICALL void GL_APIENTRY glActiveTexture (GLenum texture);
GL_APICALL void GL_APIENTRY glAttachShader (GLuint program, GLuint shader);
GL_APICALL void GL_APIENTRY glBindAttribLocation (GLuint program, GLuint index, const GLchar* name);
GL_APICALL void GL_APIENTRY glBindBuffer (GLenum target, GLuint buffer);
GL_APICALL void GL_APIENTRY glBindFramebuffer (GLenum target, GLuint framebuffer);
GL_APICALL void GL_APIENTRY glBindRenderbuffer (GLenum target, GLuint renderbuffer);
GL_APICALL void GL_APIENTRY glBindTexture (GLenum target, GLuint texture);
GL_APICALL void GL_APIENTRY glBlendColor (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
GL_APICALL void GL_APIENTRY glBlendEquation ( GLenum mode );
GL_APICALL void GL_APIENTRY glBlendEquationSeparate (GLenum modeRGB, GLenum modeAlpha);
GL_APICALL void GL_APIENTRY glBlendFunc (GLenum sfactor, GLenum dfactor);
GL_APICALL void GL_APIENTRY glBlendFuncSeparate (GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
GL_APICALL void GL_APIENTRY glBufferData (GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage);
GL_APICALL void GL_APIENTRY glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid* data);
GL_APICALL GLenum GL_APIENTRY glCheckFramebufferStatus (GLenum target);
GL_APICALL void GL_APIENTRY glClear (GLbitfield mask);
GL_APICALL void GL_APIENTRY glClearColor (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
GL_APICALL void GL_APIENTRY glClearDepthf (GLclampf depth);
GL_APICALL void GL_APIENTRY glClearStencil (GLint s);
GL_APICALL void GL_APIENTRY glColorMask (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
GL_APICALL void GL_APIENTRY glCompileShader (GLuint shader);
GL_APICALL void GL_APIENTRY glCompressedTexImage2D (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid* data);
GL_APICALL void GL_APIENTRY glCompressedTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid* data);
GL_APICALL void GL_APIENTRY glCopyTexImage2D (GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
GL_APICALL void GL_APIENTRY glCopyTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
GL_APICALL GLuint GL_APIENTRY glCreateProgram (void);
GL_APICALL GLuint GL_APIENTRY glCreateShader (GLenum type);
GL_APICALL void GL_APIENTRY glCullFace (GLenum mode);
GL_APICALL void GL_APIENTRY glDeleteBuffers (GLsizei n, const GLuint* buffers);
GL_APICALL void GL_APIENTRY glDeleteFramebuffers (GLsizei n, const GLuint* framebuffers);
GL_APICALL void GL_APIENTRY glDeleteProgram (GLuint program);
GL_APICALL void GL_APIENTRY glDeleteRenderbuffers (GLsizei n, const GLuint* renderbuffers);
GL_APICALL void GL_APIENTRY glDeleteShader (GLuint shader);
GL_APICALL void GL_APIENTRY glDeleteTextures (GLsizei n, const GLuint* textures);
GL_APICALL void GL_APIENTRY glDepthFunc (GLenum func);
GL_APICALL void GL_APIENTRY glDepthMask (GLboolean flag);
GL_APICALL void GL_APIENTRY glDepthRangef (GLclampf zNear, GLclampf zFar);
GL_APICALL void GL_APIENTRY glDetachShader (GLuint program, GLuint shader);
GL_APICALL void GL_APIENTRY glDisable (GLenum cap);
GL_APICALL void GL_APIENTRY glDisableVertexAttribArray (GLuint index);
GL_APICALL void GL_APIENTRY glDrawArrays (GLenum mode, GLint first, GLsizei count);
GL_APICALL void GL_APIENTRY glDrawElements (GLenum mode, GLsizei count, GLenum type, const GLvoid* indices);
GL_APICALL void GL_APIENTRY glEnable (GLenum cap);
GL_APICALL void GL_APIENTRY glEnableVertexAttribArray (GLuint index);
GL_APICALL void GL_APIENTRY glFinish (void);
GL_APICALL void GL_APIENTRY glFlush (void);
GL_APICALL void GL_APIENTRY glFramebufferRenderbuffer (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
GL_APICALL void GL_APIENTRY glFramebufferTexture2D (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
GL_APICALL void GL_APIENTRY glFrontFace (GLenum mode);
GL_APICALL void GL_APIENTRY glGenBuffers (GLsizei n, GLuint* buffers);
GL_APICALL void GL_APIENTRY glGenerateMipmap (GLenum target);
GL_APICALL void GL_APIENTRY glGenFramebuffers (GLsizei n, GLuint* framebuffers);
GL_APICALL void GL_APIENTRY glGenRenderbuffers (GLsizei n, GLuint* renderbuffers);
GL_APICALL void GL_APIENTRY glGenTextures (GLsizei n, GLuint* textures);
GL_APICALL void GL_APIENTRY glGetActiveAttrib (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, GLchar* name);
GL_APICALL void GL_APIENTRY glGetActiveUniform (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, GLchar* name);
GL_APICALL void GL_APIENTRY glGetAttachedShaders (GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders);
GL_APICALL int GL_APIENTRY glGetAttribLocation (GLuint program, const GLchar* name);
GL_APICALL void GL_APIENTRY glGetBooleanv (GLenum pname, GLboolean* params);
GL_APICALL void GL_APIENTRY glGetBufferParameteriv (GLenum target, GLenum pname, GLint* params);
GL_APICALL GLenum GL_APIENTRY glGetError (void);
GL_APICALL void GL_APIENTRY glGetFloatv (GLenum pname, GLfloat* params);
GL_APICALL void GL_APIENTRY glGetFramebufferAttachmentParameteriv (GLenum target, GLenum attachment, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetIntegerv (GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetProgramInfoLog (GLuint program, GLsizei bufsize, GLsizei* length, GLchar* infolog);
GL_APICALL void GL_APIENTRY glGetRenderbufferParameteriv (GLenum target, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetShaderInfoLog (GLuint shader, GLsizei bufsize, GLsizei* length, GLchar* infolog);
GL_APICALL void GL_APIENTRY glGetShaderPrecisionFormat (GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision);
GL_APICALL void GL_APIENTRY glGetShaderSource (GLuint shader, GLsizei bufsize, GLsizei* length, GLchar* source);
GL_APICALL const GLubyte* GL_APIENTRY glGetString (GLenum name);
GL_APICALL void GL_APIENTRY glGetTexParameterfv (GLenum target, GLenum pname, GLfloat* params);
GL_APICALL void GL_APIENTRY glGetTexParameteriv (GLenum target, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetUniformfv (GLuint program, GLint location, GLfloat* params);
GL_APICALL void GL_APIENTRY glGetUniformiv (GLuint program, GLint location, GLint* params);
GL_APICALL int GL_APIENTRY glGetUniformLocation (GLuint program, const GLchar* name);
GL_APICALL void GL_APIENTRY glGetVertexAttribfv (GLuint index, GLenum pname, GLfloat* params);
GL_APICALL void GL_APIENTRY glGetVertexAttribiv (GLuint index, GLenum pname, GLint* params);
GL_APICALL void GL_APIENTRY glGetVertexAttribPointerv (GLuint index, GLenum pname, GLvoid** pointer);
GL_APICALL void GL_APIENTRY glHint (GLenum target, GLenum mode);
GL_APICALL GLboolean GL_APIENTRY glIsBuffer (GLuint buffer);
GL_APICALL GLboolean GL_APIENTRY glIsEnabled (GLenum cap);
GL_APICALL GLboolean GL_APIENTRY glIsFramebuffer (GLuint framebuffer);
GL_APICALL GLboolean GL_APIENTRY glIsProgram (GLuint program);
GL_APICALL GLboolean GL_APIENTRY glIsRenderbuffer (GLuint renderbuffer);
GL_APICALL GLboolean GL_APIENTRY glIsShader (GLuint shader);
GL_APICALL GLboolean GL_APIENTRY glIsTexture (GLuint texture);
GL_APICALL void GL_APIENTRY glLineWidth (GLfloat width);
GL_APICALL void GL_APIENTRY glLinkProgram (GLuint program);
GL_APICALL void GL_APIENTRY glPixelStorei (GLenum pname, GLint param);
GL_APICALL void GL_APIENTRY glPolygonOffset (GLfloat factor, GLfloat units);
GL_APICALL void GL_APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid* pixels);
GL_APICALL void GL_APIENTRY glReleaseShaderCompiler (void);
GL_APICALL void GL_APIENTRY glRenderbufferStorage (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
GL_APICALL void GL_APIENTRY glSampleCoverage (GLclampf value, GLboolean invert);
GL_APICALL void GL_APIENTRY glScissor (GLint x, GLint y, GLsizei width, GLsizei height);
GL_APICALL void GL_APIENTRY glShaderBinary (GLsizei n, const GLuint* shaders, GLenum binaryformat, const GLvoid* binary, GLsizei length);
GL_APICALL void GL_APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar* const* string, const GLint* length);
GL_APICALL void GL_APIENTRY glStencilFunc (GLenum func, GLint ref, GLuint mask);
GL_APICALL void GL_APIENTRY glStencilFuncSeparate (GLenum face, GLenum func, GLint ref, GLuint mask);
GL_APICALL void GL_APIENTRY glStencilMask (GLuint mask);
GL_APICALL void GL_APIENTRY glStencilMaskSeparate (GLenum face, GLuint mask);
GL_APICALL void GL_APIENTRY glStencilOp (GLenum fail, GLenum zfail, GLenum zpass);
GL_APICALL void GL_APIENTRY glStencilOpSeparate (GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
GL_APICALL void GL_APIENTRY glTexImage2D (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid* pixels);
GL_APICALL void GL_APIENTRY glTexParameterf (GLenum target, GLenum pname, GLfloat param);
GL_APICALL void GL_APIENTRY glTexParameterfv (GLenum target, GLenum pname, const GLfloat* params);
GL_APICALL void GL_APIENTRY glTexParameteri (GLenum target, GLenum pname, GLint param);
GL_APICALL void GL_APIENTRY glTexParameteriv (GLenum target, GLenum pname, const GLint* params);
GL_APICALL void GL_APIENTRY glTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid* pixels);
GL_APICALL void GL_APIENTRY glUniform1f (GLint location, GLfloat x);
GL_APICALL void GL_APIENTRY glUniform1fv (GLint location, GLsizei count, const GLfloat* v);
GL_APICALL void GL_APIENTRY glUniform1i (GLint location, GLint x);
GL_APICALL void GL_APIENTRY glUniform1iv (GLint location, GLsizei count, const GLint* v);
GL_APICALL void GL_APIENTRY glUniform2f (GLint location, GLfloat x, GLfloat y);
GL_APICALL void GL_APIENTRY glUniform2fv (GLint location, GLsizei count, const GLfloat* v);
GL_APICALL void GL_APIENTRY glUniform2i (GLint location, GLint x, GLint y);
GL_APICALL void GL_APIENTRY glUniform2iv (GLint location, GLsizei count, const GLint* v);
GL_APICALL void GL_APIENTRY glUniform3f (GLint location, GLfloat x, GLfloat y, GLfloat z);
GL_APICALL void GL_APIENTRY glUniform3fv (GLint location, GLsizei count, const GLfloat* v);
GL_APICALL void GL_APIENTRY glUniform3i (GLint location, GLint x, GLint y, GLint z);
GL_APICALL void GL_APIENTRY glUniform3iv (GLint location, GLsizei count, const GLint* v);
GL_APICALL void GL_APIENTRY glUniform4f (GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
GL_APICALL void GL_APIENTRY glUniform4fv (GLint location, GLsizei count, const GLfloat* v);
GL_APICALL void GL_APIENTRY glUniform4i (GLint location, GLint x, GLint y, GLint z, GLint w);
GL_APICALL void GL_APIENTRY glUniform4iv (GLint location, GLsizei count, const GLint* v);
GL_APICALL void GL_APIENTRY glUniformMatrix2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
GL_APICALL void GL_APIENTRY glUniformMatrix3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
GL_APICALL void GL_APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
GL_APICALL void GL_APIENTRY glUseProgram (GLuint program);
GL_APICALL void GL_APIENTRY glValidateProgram (GLuint program);
GL_APICALL void GL_APIENTRY glVertexAttrib1f (GLuint indx, GLfloat x);
GL_APICALL void GL_APIENTRY glVertexAttrib1fv (GLuint indx, const GLfloat* values);
GL_APICALL void GL_APIENTRY glVertexAttrib2f (GLuint indx, GLfloat x, GLfloat y);
GL_APICALL void GL_APIENTRY glVertexAttrib2fv (GLuint indx, const GLfloat* values);
GL_APICALL void GL_APIENTRY glVertexAttrib3f (GLuint indx, GLfloat x, GLfloat y, GLfloat z);
GL_APICALL void GL_APIENTRY glVertexAttrib3fv (GLuint indx, const GLfloat* values);
GL_APICALL void GL_APIENTRY glVertexAttrib4f (GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
GL_APICALL void GL_APIENTRY glVertexAttrib4fv (GLuint indx, const GLfloat* values);
GL_APICALL void GL_APIENTRY glVertexAttribPointer (GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid* ptr);
GL_APICALL void GL_APIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei height);
#ifdef __cplusplus
}
#endif
#endif /* __gl2_h_ */

1498
cogl-gles2/GLES2/gl2ext.h Normal file

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@ -0,0 +1,28 @@
#ifndef __gl2platform_h_
#define __gl2platform_h_
/* $Revision: 10602 $ on $Date:: 2010-03-04 22:35:34 -0800 #$ */
/*
* This document is licensed under the SGI Free Software B License Version
* 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
*/
/* Platform-specific types and definitions for OpenGL ES 2.X gl2.h
*
* Adopters may modify khrplatform.h and this file to suit their platform.
* You are encouraged to submit all modifications to the Khronos group so that
* they can be included in future versions of this file. Please submit changes
* by sending them to the public Khronos Bugzilla (http://khronos.org/bugzilla)
* by filing a bug against product "OpenGL-ES" component "Registry".
*/
#ifndef GL_APICALL
#define GL_APICALL
#endif
#ifndef GL_APIENTRY
#define GL_APIENTRY
#endif
#endif /* __gl2platform_h_ */

29
cogl-gles2/Makefile.am Normal file
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@ -0,0 +1,29 @@
include $(top_srcdir)/build/autotools/Makefile.am.silent
# preamble
NULL =
lib_LTLIBRARIES = libcogl-gles2.la
INCLUDES = \
-I$(top_srcdir) \
-I$(top_builddir)
AM_CFLAGS = $(COGL_DEP_CFLAGS) $(COGL_EXTRA_CFLAGS) $(MAINTAINER_CFLAGS)
libcogl_gles2_la_SOURCES = cogl-gles2-api.c
libcogl_gles2_la_LDFLAGS = \
-no-undefined \
-version-info @COGL_LT_CURRENT@:@COGL_LT_REVISION@:@COGL_LT_AGE@ \
-export-dynamic \
-export-symbols-regex "^gl*"
coglgles2includedir = $(includedir)/cogl2/cogl-gles2/GLES2
coglgles2include_HEADERS = \
GLES2/gl2.h \
GLES2/gl2ext.h \
GLES2/gl2platform.h
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = cogl-gles2-experimental.pc

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cogl-gles2/cogl-gles2-api.c Normal file

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@ -0,0 +1,13 @@
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
apiversion=@COGL_API_VERSION@
requires=cogl2
Name: CoglGLES2
Description: Cogl OpenGL ES 2.0 frontend api
Version: @COGL_VERSION@
Libs: -L${libdir} -lcogl-gles2
Cflags: -I${includedir}/cogl-gles2
Requires: ${requires}

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@ -62,7 +62,7 @@ COGL_EXT_FUNCTION (GLuint, glCreateShader,
COGL_EXT_FUNCTION (void, glShaderSource,
(GLuint shader,
GLsizei count,
const char **string,
const char * const *string,
const GLint *length))
COGL_EXT_FUNCTION (void, glCompileShader,
(GLuint shader))

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@ -106,7 +106,7 @@ COGL_EXT_BEGIN (vbos, 1, 5,
"ARB\0",
"vertex_buffer_object\0")
COGL_EXT_FUNCTION (void, glGenBuffers,
(GLuint n,
(GLsizei n,
GLuint *buffers))
COGL_EXT_FUNCTION (void, glBindBuffer,
(GLenum target,

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@ -634,9 +634,30 @@ AC_SUBST([HAVE_GLES2])
if test "x$GL_LIBRARY_DIRECTLY_LINKED" = "xyes"; then
AC_DEFINE([HAVE_DIRECTLY_LINKED_GL_LIBRARY], [1],
[Defined if the GL library shouldn't be dlopened])
[Defined if the GL library should not be dlopened])
fi
AC_ARG_ENABLE(
[cogl-gles2],
[AC_HELP_STRING([--enable-cogl-gles2=@<:@no/yes@:>@],
[Enable libcogl-gles2 frontend api for OpenGL-ES 2.0 @<:@default=auto@:>@])],
[],
[
AS_IF([test "x$HAVE_GLES2" = "x1"],
[enable_cogl_gles2=yes],
[enable_cogl_gles2=no])
]
)
AS_IF([test "x$enable_cogl_gles2" = "xyes"],
[
AS_IF([test "x$HAVE_GLES2" != "x1"],
[
AC_MSG_ERROR([libcogl-gles2 is currently only supported on systems with a native GLES 2.0 library])
])
])
AM_CONDITIONAL([BUILD_COGL_GLES2], [test "x$enable_cogl_gles2" = "xyes"])
dnl ========================================================
dnl Check window system integration libraries...
dnl ========================================================
@ -1155,6 +1176,8 @@ cogl-pango/Makefile
cogl-pango/cogl-pango-1.0.pc
cogl-pango/cogl-pango-2.0-experimental.pc
cogl-pango/cogl-pango.rc
cogl-gles2/Makefile
cogl-gles2/cogl-gles2-experimental.pc
doc/Makefile
doc/reference/Makefile
doc/reference/cogl/Makefile
@ -1200,6 +1223,7 @@ fi
if test "x$SUPPORT_SDL" = "xyes"; then
echo " Support GLES under SDL: ${SUPPORT_SDL_GLES}"
fi
echo " Build libcogl-gles2 GLES 2.0 frontend api: ${BUILD_COGL_GLES2}"
echo " Image backend: ${COGL_IMAGE_BACKEND}"
echo " Cogl Pango: ${enable_cogl_pango}"
echo " Profiling: ${enable_profile}"

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@ -1,3 +1,4 @@
#undef CLUTTER_COMPILATION
#include <cogl/cogl.h>
#include "test-utils.h"