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mesa: glsl: fix/simplify built-in constant lookup

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This commit is contained in:
Brian Paul 2008-07-23 15:14:22 -06:00
parent 564c97660a
commit d5835c1d0f
1 changed files with 25 additions and 17 deletions
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42
src/mesa/shader/slang/slang_simplify.c
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@ -37,6 +37,15 @@
#include "slang_print.h"
#ifndef GL_MAX_FRAGMENT_UNIFORM_VECTORS
#define GL_MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD
#endif
#ifndef GL_MAX_VERTEX_UNIFORM_VECTORS
#define GL_MAX_VERTEX_UNIFORM_VECTORS 0x8DFB
#endif
#ifndef GL_MAX_VARYING_VECTORS
#define GL_MAX_VARYING_VECTORS 0x8DFC
#endif
/**
@ -49,25 +58,24 @@ _slang_lookup_constant(const char *name)
struct constant_info {
const char *Name;
const GLenum Token;
GLint Divisor;
};
static const struct constant_info info[] = {
{ "gl_MaxClipPlanes", GL_MAX_CLIP_PLANES, 1 },
{ "gl_MaxCombinedTextureImageUnits", GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, 1 },
{ "gl_MaxDrawBuffers", GL_MAX_DRAW_BUFFERS, 1 },
{ "gl_MaxFragmentUniformComponents", GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, 1 },
{ "gl_MaxLights", GL_MAX_LIGHTS, 1 },
{ "gl_MaxTextureUnits", GL_MAX_TEXTURE_UNITS, 1 },
{ "gl_MaxTextureCoords", GL_MAX_TEXTURE_COORDS, 1 },
{ "gl_MaxVertexAttribs", GL_MAX_VERTEX_ATTRIBS, 1 },
{ "gl_MaxVertexUniformComponents", GL_MAX_VERTEX_UNIFORM_COMPONENTS, 1 },
{ "gl_MaxVaryingFloats", GL_MAX_VARYING_FLOATS, 1 },
{ "gl_MaxVertexTextureImageUnits", GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, 1 },
{ "gl_MaxTextureImageUnits", GL_MAX_TEXTURE_IMAGE_UNITS, 1 },
{ "gl_MaxClipPlanes", GL_MAX_CLIP_PLANES },
{ "gl_MaxCombinedTextureImageUnits", GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS },
{ "gl_MaxDrawBuffers", GL_MAX_DRAW_BUFFERS },
{ "gl_MaxFragmentUniformComponents", GL_MAX_FRAGMENT_UNIFORM_COMPONENTS },
{ "gl_MaxLights", GL_MAX_LIGHTS },
{ "gl_MaxTextureUnits", GL_MAX_TEXTURE_UNITS },
{ "gl_MaxTextureCoords", GL_MAX_TEXTURE_COORDS },
{ "gl_MaxVertexAttribs", GL_MAX_VERTEX_ATTRIBS },
{ "gl_MaxVertexUniformComponents", GL_MAX_VERTEX_UNIFORM_COMPONENTS },
{ "gl_MaxVaryingFloats", GL_MAX_VARYING_FLOATS },
{ "gl_MaxVertexTextureImageUnits", GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS },
{ "gl_MaxTextureImageUnits", GL_MAX_TEXTURE_IMAGE_UNITS },
#if FEATURE_es2_glsl
{ "gl_MaxVertexUniformVectors", GL_MAX_VERTEX_UNIFORM_COMPONENTS, 4 },
{ "gl_MaxVaryingVectors", GL_MAX_VARYING_FLOATS, 4 },
{ "gl_MaxFragmentUniformVectors", GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, 4 },
{ "gl_MaxVertexUniformVectors", GL_MAX_VERTEX_UNIFORM_VECTORS },
{ "gl_MaxVaryingVectors", GL_MAX_VARYING_VECTORS },
{ "gl_MaxFragmentUniformVectors", GL_MAX_FRAGMENT_UNIFORM_VECTORS },
#endif
{ NULL, 0 }
};
@ -79,7 +87,7 @@ _slang_lookup_constant(const char *name)
GLint value = -1;
_mesa_GetIntegerv(info[i].Token, &value);
ASSERT(value >= 0); /* sanity check that glGetFloatv worked */
return value / info[i].Divisor;
return value;
}
}
return -1;