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HLSL: implement [unroll] and [loop] attributes

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This adds infrastructure suitable for any front end to create SPIR-V loop
control flags.  The only current front end doing so is HLSL.

[unroll] turns into spv::LoopControlUnrollMask
[loop] turns into spv::LoopControlDontUnrollMask
no specification means spv::LoopControlMaskNone
This commit is contained in:
steve-lunarg 2017-05-02 20:14:50 -06:00
parent de1cc06c1d
commit f1709e7146
17 changed files with 334 additions and 17 deletions
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8
hlsl/hlslAttributes.cpp
View file

@ -80,6 +80,8 @@ namespace glslang {
return EatPatchConstantFunc;
else if (lowername == "unroll")
return EatUnroll;
else if (lowername == "loop")
return EatLoop;
else
return EatNone;
}
@ -107,4 +109,10 @@ namespace glslang {
return (entry == attributes.end()) ? nullptr : entry->second;
}
// True if entry exists in map (even if value is nullptr)
bool TAttributeMap::contains(TAttributeType attr) const
{
return attributes.find(attr) != attributes.end();
}
} // end namespace glslang