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Implement cull distances for GLSL 4.5 (but not as an extension yet, just a 4.5 feature).

Browse source 
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@27714 e7fa87d3-cd2b-0410-9028-fcbf551c1848
This commit is contained in:
John Kessenich 2014-08-13 06:37:59 +00:00
parent 13fd6c9dd7
commit 699684180f
20 changed files with 414 additions and 3 deletions
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35
glslang/MachineIndependent/Initialize.cpp
View file

@ -1221,7 +1221,7 @@ void TBuiltIns::initialize(int version, EProfile profile)
"vec4 gl_Position;" // needs qualifier fixed later
"float gl_PointSize;" // needs qualifier fixed later
"float gl_ClipDistance[];"
);
);
if (IncludeLegacy(version, profile))
stageBuiltins[EShLangVertex].append(
"vec4 gl_ClipVertex;" // needs qualifier fixed later
@ -1232,6 +1232,10 @@ void TBuiltIns::initialize(int version, EProfile profile)
"vec4 gl_TexCoord[];"
"float gl_FogFragCoord;"
);
if (version >= 450)
stageBuiltins[EShLangVertex].append(
"float gl_CullDistance[];"
);
stageBuiltins[EShLangVertex].append(
"};"
"\n");
@ -1285,6 +1289,10 @@ void TBuiltIns::initialize(int version, EProfile profile)
"vec4 gl_TexCoord[];"
"float gl_FogFragCoord;"
);
if (version >= 450)
stageBuiltins[EShLangGeometry].append(
"float gl_CullDistance[];"
);
stageBuiltins[EShLangGeometry].append(
"} gl_in[];"
@ -1304,6 +1312,10 @@ void TBuiltIns::initialize(int version, EProfile profile)
"vec4 gl_TexCoord[];"
"float gl_FogFragCoord;"
);
if (version >= 450)
stageBuiltins[EShLangGeometry].append(
"float gl_CullDistance[];"
);
stageBuiltins[EShLangGeometry].append(
"};"
@ -1356,6 +1368,10 @@ void TBuiltIns::initialize(int version, EProfile profile)
"vec4 gl_TexCoord[];"
"float gl_FogFragCoord;"
);
if (version >= 450)
stageBuiltins[EShLangTessControl].append(
"float gl_CullDistance[];"
);
stageBuiltins[EShLangTessControl].append(
"} gl_out[];"
@ -1397,6 +1413,10 @@ void TBuiltIns::initialize(int version, EProfile profile)
"vec4 gl_TexCoord[];"
"float gl_FogFragCoord;"
);
if (version >= 450)
stageBuiltins[EShLangTessEvaluation].append(
"float gl_CullDistance[];"
);
stageBuiltins[EShLangTessEvaluation].append(
"};"
"\n");
@ -1477,6 +1497,7 @@ void TBuiltIns::initialize(int version, EProfile profile)
if (version >= 450)
stageBuiltins[EShLangFragment].append(
"in float gl_CullDistance[];"
"bool gl_HelperInvocation;" // needs qualifier fixed later
);
} else {
@ -2200,6 +2221,10 @@ void TBuiltIns::initialize(const TBuiltInResource &resources, int version, EProf
"vec4 gl_TexCoord[];"
"float gl_FogFragCoord;"
);
if (profile != EEsProfile && version >= 450)
s.append(
"float gl_CullDistance[];"
);
s.append(
"} gl_in[gl_MaxPatchVertices];"
"\n");
@ -2301,6 +2326,14 @@ void TBuiltIns::initialize(const TBuiltInResource &resources, int version, EProf
s.append(builtInConstant);
}
// GL_ARB_cull_distance
if (profile != EEsProfile && version >= 450) {
snprintf(builtInConstant, maxSize, "const int gl_MaxCullDistances = %d;", resources.maxCullDistances);
s.append(builtInConstant);
snprintf(builtInConstant, maxSize, "const int gl_MaxCombinedClipAndCullDistances = %d;", resources.maxCombinedClipAndCullDistances);
s.append(builtInConstant);
}
s.append("\n");
}