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SPV: Support texelFetch() on a textureBuffer (no sampler).

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Fixes Vulkan Khronos-internal issue 770.
This commit is contained in:
John Kessenich 2017-05-08 00:12:28 -06:00
parent a5c5fb6118
commit c10191d132
5 changed files with 96 additions and 3 deletions
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9
glslang/MachineIndependent/Initialize.cpp
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@ -3844,6 +3844,15 @@ void TBuiltIns::add2ndGenerationSamplingImaging(int version, EProfile profile, c
else {
addSamplingFunctions(sampler, typeName, version, profile);
addGatherFunctions(sampler, typeName, version, profile);
if (spvVersion.vulkan > 0 && sampler.dim == EsdBuffer && sampler.isCombined()) {
// Vulkan wants a textureBuffer to allow texelFetch() --
// a sampled image with no sampler.
// So, add sampling functions for both the
// samplerBuffer and textureBuffer types.
sampler.setTexture(sampler.type, sampler.dim, sampler.arrayed, sampler.shadow,
sampler.ms);
addSamplingFunctions(sampler, sampler.getString(), version, profile);
}
}
}
}