Commit Graph

16 Commits

Author SHA1 Message Date
Robert Bragg
4e60f2f5b0 [Automatic fixed-to-float.sh change] Applies a number fixed to float patches
To deal with all the corner cases that couldn't be scripted a number of patches
were written for the remaining 10% of the effort.

Note: again no API changes were made in Clutter, only in Cogl.
2009-01-20 16:20:54 +00:00
Robert Bragg
3336359abb [Automatic fixed-to-float.sh change] Applies all scripted changes
This is the result of running a number of sed and perl scripts over the code to
do 90% of the work in converting from 16.16 fixed to single precision floating
point.

Note: A pristine cogl-fixed.c has been maintained as a standalone utility API
      so that applications may still take advantage of fixed point if they
      desire for certain optimisations where lower precision may be acceptable.

Note: no API changes were made in Clutter, only in Cogl.

Overview of changes:
- Within clutter/* all usage of the COGL_FIXED_ macros have been changed to use
the CLUTTER_FIXED_ macros.

- Within cogl/* all usage of the COGL_FIXED_ macros have been completly stripped
and expanded into code that works with single precision floats instead.

- Uses of cogl_fixed_* have been replaced with single precision math.h
alternatives.

- Uses of COGL_ANGLE_* and cogl_angle_* have been replaced so we use a float for
angles and math.h replacements.
2009-01-20 16:20:54 +00:00
Neil Roberts
53ba8bd92c [fixed-to-float-patches] Move the changes to gles2-wrapper.h into the patch
It looks like the changes to cogl-gles2-wrapper.h were accidentally
committed to the actual file instead of the patch in commit
de27da0e. This commit moves the changes back into the patch so
cogl-gles2-wrapper.h is reverted back to master.
2009-01-16 10:50:53 +00:00
Neil Roberts
eea3d2ce7c Merge branch 'master' into cogl-float
The patches have been updated to apply cleanly.

The patches for the g_warnings in clutter-actor.c have been removed
because master now uses CLUTTER_UNITS_FORMAT so they aren't
necessary. The clutter-units.h patch now sets CLUTTER_UNITS_FORMAT to
'f'.
2009-01-15 18:26:22 +00:00
Neil Roberts
7223b0a1a5 Fix GLES 2 after the multiple-texture-rectangle branch merge
The GLES 2 wrapper needs to set up some state before each
draw. Previously this was acheived by wrapping glDrawArrays. Since the
multiple-texture-rectangle branch merge, glDrawElements is used
instead so we also need a wrapper for that.

It was also directly calling glBindTexture. GLES 2 uses a wrapper for
this function so that it can cope with GL_ALPHA format textures. The
format of the current texture needs to be stored as well as the target
and object number for this to work.
2009-01-13 16:52:39 +00:00
Robert Bragg
eb8ce66e61 [cogl/gles] Fixes for building for GLES 1 using floats
* This adds GLfixed -> GLfloat conversion
* redefines cogl_wrap_glBlahx macros as glBlahf
* Other misc fixes (mostly corresponding to cogl/gl equivalents)
2009-01-12 17:21:09 +00:00
Emmanuele Bassi
2142062ba1 2008-11-18 Emmanuele Bassi <ebassi@linux.intel.com>
Bug 1049 - Clutter doesn't support most GLSL uniforms (patch
	by Chris Lord and Neil Roberts)

	* README: Update release notes.

	* clutter/Makefile.am:
	* clutter/clutter-shader-types.[ch]: Add GValue types for
	shader values.

	* clutter/clutter-actor.[ch]: Update the shader API to use
	the newly added GValue support for GLSL shader uniform
	setters.

	* clutter/clutter-shader.[ch]: Add float and integer convenience
	API for single value GLSL uniform setters.

	* clutter/cogl/cogl-shader.h: Add new uniform setters.

	* clutter/cogl/gl/cogl-context.c:
	* clutter/cogl/gl/cogl-context.h:
	* clutter/cogl/gl/cogl-defines.h.in:
	* clutter/cogl/gl/cogl-program.c:
	* clutter/cogl/gl/cogl.c: Update the GL implementation of COGL
	to handle the GLSL uniform setters.

	* clutter/cogl/gles/cogl-gles2-wrapper.c:
	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	* clutter/cogl/gles/cogl-internal.h:
	* clutter/cogl/gles/cogl-program.c: Update the GLES 2.0 implementation
	of COGL to handle the GLSL uniform setters.

	* doc/reference/clutter/clutter-sections.txt:
	* doc/reference/cogl/cogl-sections.txt: Update the documentation.

	* tests/interactive/test-fbo.c:
	* tests/interactive/test-shader.c: Update the shader tests.
2008-11-18 15:08:40 +00:00
Neil Roberts
fe7aa83f86 * clutter/cogl/gles/cogl-gles2-wrapper.h:
* clutter/cogl/gles/cogl-gles2-wrapper.c:
	Initialise the 'tex' sampler uniform to 0. The GLSL spec
	specifically says that you must initialize sampler uniforms. This
	fixes texturing for GLES 2 when using the PowerVR simulator via
	software Mesa.
2008-11-13 14:44:27 +00:00
Robert Bragg
8ae02decb4 Gets the mesh API working with GLES2
* clutter/cogl/common/cogl-mesh.c:
	Make sure we use the appropriate cogl_wrap_gl* funcs as appropriate

	* clutter/cogl/gles/cogl-gles2-wrapper.c
	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	In our glColorPointer wrapper we needed to mark our color attribute
	as normalized.

	* tests/conform/Makefile.am:
	When creating unit test symlinks we use the -l gtester option to
	list tests, but when using the PVR SDK the test binary also spews
	out some extra info that caused lots of random symlinks to be
	created. We now grep for lines starting with a '/'

	* tests/conform/test-mesh-contiguous.c
	* tests/conform/test-mesh-mutability.c:
	Use cogl_set_source_color instead of directly calling glColor4ub
2008-11-13 14:28:16 +00:00
Neil Roberts
ef76d8e5e2 Bug 945 - Clipping+fbo cloning bugs
* clutter/cogl/gl/cogl.c: 
	* clutter/cogl/gles/cogl.c: 
	* clutter/cogl/cogl.h.in: Add cogl_clip_stack_save,
	cogl_clip_stack_restore, cogl_viewport and cogl_frustum.

	* clutter/cogl/gl/cogl-fbo.h: 
	* clutter/cogl/gl/cogl-fbo.c: Try to attach a stencil buffer when
	creating an FBO.

	* clutter/cogl/common/cogl-clip-stack.c: Add functions to save and
	restore the whole state of the stack.

	* clutter/clutter-texture.c (clutter_texture_paint): When
	rendering the FBO source, setup a temporary asymmetric perspective
	projection matrix to render it as it would appear on screen.

	* clutter/clutter-private.h: 
	* clutter/clutter-actor.c
	(_clutter_actor_apply_modelview_transform_recursive): No longer
	static and exported in clutter-private.h
2008-08-01 12:23:57 +00:00
Neil Roberts
cbd77008ff * clutter/cogl/gles/cogl-gles2-wrapper.h:
* clutter/cogl/gles/cogl-gles2-wrapper.c: All of the settings and
	uniforms are now proxied into COGL variables instead of setting
	the GL uniforms directly. Just before glDrawArrays is executed a
	shader is generated using the given settings to avoid using 'if'
	statements. The shaders are cached.

	* clutter/cogl/gles/cogl-fixed-vertex-shader.glsl: 
	* clutter/cogl/gles/cogl-fixed-fragment-shader.glsl: The shaders
	are now split into parts using comments instead of 'if' statements
	so that the simplest shader can be generated on the fly.

	* clutter/cogl/gles/stringify.sh: Now splits up the shader sources
	into separate C strings where deliminated by special comments.

	* clutter/cogl/gles/cogl-program.h: 
	* clutter/cogl/gles/cogl-program.c: A custom shader can no longer
	be directly linked with the fixed-functionality replacement
	because the replacement changes depending on the settings. Instead
	the bound shader is linked with the appropriate replacement shader
	just before glDrawArrays is executed. The custom uniform variables
	must also be proxied through COGL variables because their location
	can change when relinked.
2008-06-24 16:21:40 +00:00
Neil Roberts
165531074b * clutter/cogl/gles/cogl-gles2-wrapper.h: The uniform numbers are
now stored in a separate struct so they can be stored for
	application program objects as well.

	* clutter/cogl/gles/cogl.c: Moved stub shader functions into
	separate files.
	(_cogl_features_init): Report support for the shaders feature on
	GLES 2

	* clutter/cogl/gles/cogl-shader.h:
	* clutter/cogl/gles/cogl-shader.c:
	* clutter/cogl/gles/cogl-program.h:
	* clutter/cogl/gles/cogl-program.c: Separate files to handle
	shaders on programs on GLES. If version 1.1 is being used then the
	stub functions which all fail are still used.

	* clutter/cogl/gles/cogl-gles2-wrapper.c
	(cogl_gles2_wrapper_init, cogl_gles2_wrapper_bind_attributes),
	(cogl_gles2_wrapper_get_uniforms): Move the uniforms and attribute
	bindings into a separate function so they can be used to bind on
	application shaders as well.
	(cogl_gles2_wrapper_update_matrix): Now takes a parameter and is
	no longer static so that it can be used to update all of the
	matrices when a new shader is bound.

	* clutter/cogl/gles/cogl-defines.h.in: Use GL_COMPILE_STATUS for
	CGL_OBJECT_COMPILE_STATUS if the latter isn't available (for
	example on GLES 2).

	* clutter/cogl/gles/cogl-context.h (CoglContext): Added handle
	arrays for programs and shaders.

	* clutter/cogl/gles/cogl-context.c (cogl_create_context)
	(cogl_destroy_context): Initialize and destroy program and shader
	handle array.

	* clutter/cogl/gles/Makefile.am (libclutter_cogl_la_SOURCES): Add
	cogl-{shader,program}.{c,h}
2008-06-02 10:58:57 +00:00
Neil Roberts
559495caf7 * clutter/cogl/gles/cogl-gles2-wrapper.h (CoglGles2Wrapper): Added
uniforms for alpha testing.

	* clutter/cogl/gles/cogl-gles2-wrapper.c
	(cogl_gles2_wrapper_init): Get the uniforms for alpha testing
	settings.
	(cogl_wrap_glEnable, cogl_wrap_glDisable): Enable/disable alpha
	testing.
	(cogl_wrap_glAlphaFunc): Filled in the wrapper.

	* clutter/cogl/gles/cogl-fixed-fragment-shader.glsl: Added alpha
	testing.

	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	* clutter/cogl/gles/cogl-gles2-wrapper.c
	(cogl_wrap_glGetIntegerv): Added a wrapper for glGetIntegerv so
	that it can report zero clip planes.

	* clutter/cogl/gles/cogl.c:
	* clutter/cogl/gles/cogl-texture.c: Use the wrapped version of
	glGetIntegerv

	* clutter/cogl/gles/cogl-primitives.c (_cogl_path_fill_nodes): Use
	_cogl_features_available to check for the stencil buffer instead
	of an #ifdef. The stencil buffer is available in the default
	profile for the GLES 2 simulator.
2008-05-29 13:29:04 +00:00
Neil Roberts
38c9d46a0e * clutter/cogl/gles/cogl-gles2-wrapper.c
(cogl_gles2_wrapper_init): Get uniforms for fog parameters and
    	initialise them.
    	(cogl_wrap_glDrawArrays): Store the modelview matrix in a uniform
    	as well so that it can be used for fogging calculations.
    	(cogl_wrap_glEnable, cogl_wrap_glDisable): Enable/disable fogging.
    	(cogl_wrap_glFogx, cogl_wrap_glFogxv): Fill in wrapper to set
    	fogging parameters.

    	* clutter/cogl/gles/cogl-fixed-vertex-shader.glsl: Calculate the
    	fog amount if fogging is enabled.

    	* clutter/cogl/gles/cogl-fixed-fragment-shader.glsl: Mix with fog
    	color.

    	* clutter/cogl/gles/cogl-gles2-wrapper.h (CoglGles2Wrapper): Add
    	uniforms for fogging.
2008-05-28 17:14:17 +00:00
Neil Roberts
49752b06d3 * clutter/cogl/gles/cogl-texture.c: Use the wrapper for
glTexParameteri. Call glGenerateMipmap after every change to the
	texture image data.

	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	* clutter/cogl/gles/cogl-gles2-wrapper.c: Added a wrapper for
	glTexParameteri so that it can ignore requests to set
	GL_GENERATE_MIPMAP. Added a wrapper for glGenerateMipmap that does
	nothing on GLES 1
2008-05-28 10:47:21 +00:00
Neil Roberts
f177aedcff GLES 2 backend
* clutter/eglx/clutter-stage-egl.h:
	* clutter/eglx/clutter-egl-headers.h:
	* clutter/eglx/clutter-backend-egl.h:
	* clutter/eglx/Makefile.am: Include the GLES and EGL headers via
	clutter-egl-headers.h so that the right version can be used
	depending on whether the GLES 2 wrapper is being used.

	* configure.ac: Added an automake conditional for whether the GLES
	2 wrapper should be used.

	* clutter/eglx/clutter-stage-egl.c (clutter_stage_egl_realize):
	Remove the call to glGetIntegerv to get the max texture size. It
	was being called before the GL context was bound so it didn't work
	anyway and it was causing trouble for the GLES 2 simulator.

	* clutter/cogl/gles/stringify.sh: Shell script to convert the
	shaders into a C string.

	* clutter/cogl/gles/cogl-gles2-wrapper.h:
	* clutter/cogl/gles/cogl-gles2-wrapper.c: Wrappers for most of the
	missing GL functions in GLES 2.

	* clutter/cogl/gles/cogl-fixed-fragment-shader.glsl:
	* clutter/cogl/gles/cogl-fixed-vertex-shader.glsl: New shaders for
	GLES 2

	* clutter/cogl/gles/cogl-defines.h.in: Use the @CLUTTER_GL_HEADER@
	macro instead of always using the GLES 1 header.

	* clutter/cogl/gles/cogl-context.h (CoglContext): Include a field
	for the state of the GLES 2 wrapper.

	* clutter/cogl/gles/cogl-texture.c:
	* clutter/cogl/gles/cogl-primitives.c:
	* clutter/cogl/gles/cogl.c: Use wrapped versions of the GL
	functions where neccessary.

	* clutter/cogl/gles/Makefile.am: Add sources for the GLES 2
	wrapper and an extra build step to put the GLSL files into a C
	string whenever the files change.
2008-05-27 17:42:50 +00:00