mutter/clutter/cogl/gles/cogl-fixed-vertex-shader.glsl
Neil Roberts 70dbc03734 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

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GLSL

/* Per vertex attributes */
attribute vec4 vertex_attrib;
attribute vec4 tex_coord_attrib;
attribute vec4 color_attrib;
/* Transformation matrices */
uniform mat4 mvp_matrix; /* combined modelview and projection matrix */
uniform mat4 texture_matrix;
/* Outputs to the fragment shader */
varying vec4 frag_color;
varying vec2 tex_coord;
void
main (void)
{
/* Calculate the transformed position */
gl_Position = mvp_matrix * vertex_attrib;
/* Calculate the transformed texture coordinate */
vec4 transformed_tex_coord = texture_matrix * tex_coord_attrib;
tex_coord = transformed_tex_coord.st / transformed_tex_coord.q;
/* Pass the interpolated vertex color on to the fragment shader */
frag_color = color_attrib;
}