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Full stack: implement textureQueryLod(*) and textureQueryLevels(*).

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This commit is contained in:
John Kessenich 2015-09-15 19:38:56 -06:00
parent ef0118b26e
commit 2398b3a458
15 changed files with 894 additions and 16 deletions
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47
glslang/MachineIndependent/Initialize.cpp
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@ -1848,7 +1848,8 @@ void TBuiltIns::initialize(int version, EProfile profile)
if (version >= 130)
add2ndGenerationSamplingImaging(version, profile);
// printf("%s\n", commonBuiltins.c_str());
//printf("%s\n", commonBuiltins.c_str());
//printf("%s\n", stageBuiltins[EShLangFragment].c_str());
}
//
@ -1946,21 +1947,21 @@ void TBuiltIns::add2ndGenerationSamplingImaging(int version, EProfile profile)
//
void TBuiltIns::addQueryFunctions(TSampler sampler, TString& typeName, int version, EProfile profile)
{
//
// textureSize
//
if (sampler.image && ((profile == EEsProfile && version < 310) || (profile != EEsProfile && version < 430)))
return;
//
// textureSize() and imageSize()
//
int sizeDims = dimMap[sampler.dim] + (sampler.arrayed ? 1 : 0) - (sampler.dim == EsdCube ? 1 : 0);
if (profile == EEsProfile)
commonBuiltins.append("highp ");
int dims = dimMap[sampler.dim] + (sampler.arrayed ? 1 : 0) - (sampler.dim == EsdCube ? 1 : 0);
if (dims == 1)
if (sizeDims == 1)
commonBuiltins.append("int");
else {
commonBuiltins.append("ivec");
commonBuiltins.append(postfixes[dims]);
commonBuiltins.append(postfixes[sizeDims]);
}
if (sampler.image)
commonBuiltins.append(" imageSize(readonly writeonly volatile coherent ");
@ -1972,6 +1973,10 @@ void TBuiltIns::addQueryFunctions(TSampler sampler, TString& typeName, int versi
else
commonBuiltins.append(");\n");
//
// textureSamples() and imageSamples()
//
// GL_ARB_shader_texture_image_samples
// TODO: spec issue? there are no memory qualifiers; how to query a writeonly/readonly image, etc?
if (profile != EEsProfile && version >= 430 && sampler.ms) {
@ -1983,6 +1988,32 @@ void TBuiltIns::addQueryFunctions(TSampler sampler, TString& typeName, int versi
commonBuiltins.append(typeName);
commonBuiltins.append(");\n");
}
//
// textureQueryLod(), fragment stage only
//
if (profile != EEsProfile && version >= 400 && ! sampler.image && sampler.dim != EsdRect && ! sampler.ms && sampler.dim != EsdBuffer) {
stageBuiltins[EShLangFragment].append("vec2 textureQueryLod(");
stageBuiltins[EShLangFragment].append(typeName);
if (dimMap[sampler.dim] == 1)
stageBuiltins[EShLangFragment].append(", float");
else {
stageBuiltins[EShLangFragment].append(", vec");
stageBuiltins[EShLangFragment].append(postfixes[dimMap[sampler.dim]]);
}
stageBuiltins[EShLangFragment].append(");\n");
}
//
// textureQueryLevels()
//
if (profile != EEsProfile && version >= 430 && ! sampler.image && sampler.dim != EsdRect && ! sampler.ms && sampler.dim != EsdBuffer) {
commonBuiltins.append("int textureQueryLevels(");
commonBuiltins.append(typeName);
commonBuiltins.append(");\n");
}
}
//