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* clutter/cogl/gles/cogl-gles2-wrapper.h:

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* 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.
This commit is contained in:
Neil Roberts 2008-11-13 14:44:27 +00:00
parent 8ae02decb4
commit fe7aa83f86
2 changed files with 11 additions and 1 deletions
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7
gles/cogl-gles2-wrapper.c
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@ -453,6 +453,9 @@ cogl_gles2_wrapper_get_uniforms (GLuint program,
uniforms->alpha_test_ref_uniform
= glGetUniformLocation (program, "alpha_test_ref");
uniforms->texture_unit_uniform
= glGetUniformLocation (program, "texture_unit");
}
void
@ -885,6 +888,10 @@ cogl_wrap_glDrawArrays (GLenum mode, GLint first, GLsizei count)
glUniform1f (program->uniforms.alpha_test_ref_uniform,
w->alpha_test_ref);
if ((w->dirty_uniforms & COGL_GLES2_DIRTY_TEXTURE_UNIT)
&& program->uniforms.texture_unit_uniform != -1)
glUniform1i (program->uniforms.texture_unit_uniform, 0);
w->dirty_uniforms = 0;
}

5
gles/cogl-gles2-wrapper.h
View File

@ -54,8 +54,9 @@ enum
COGL_GLES2_DIRTY_FOG_END = 1 << 5,
COGL_GLES2_DIRTY_FOG_COLOR = 1 << 6,
COGL_GLES2_DIRTY_ALPHA_TEST_REF = 1 << 7,
COGL_GLES2_DIRTY_TEXTURE_UNIT = 1 << 8,
COGL_GLES2_DIRTY_ALL = (1 << 8) - 1
COGL_GLES2_DIRTY_ALL = (1 << 9) - 1
};
struct _CoglGles2WrapperUniforms
@ -71,6 +72,8 @@ struct _CoglGles2WrapperUniforms
GLint fog_color_uniform;
GLint alpha_test_ref_uniform;
GLint texture_unit_uniform;
};
struct _CoglGles2WrapperSettings