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New nonuniform analysis (#2457)

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This implements a new nonunifom analysis suggested by @jbolz. This change
generates nonUniform decorations that were previously missing and avoids
generation of incorrect decorations. Most notably, it now generates
decorations for nonuniform functions and out params. It avoids generating
decorations for lvalues which themselves are not nonuniform.
This commit is contained in:
greg-lunarg 2020-11-12 11:10:07 -07:00 • committed by GitHub
parent 74e8f05b9f
commit 639f5461e3
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 496 additions and 373 deletions
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6
SPIRV/SpvBuilder.h
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@ -625,6 +625,7 @@ public:
CoherentFlags operator |=(const CoherentFlags &other) { return *this; }
#else
bool isVolatile() const { return volatil; }
bool isNonUniform() const { return nonUniform; }
bool anyCoherent() const {
return coherent || devicecoherent || queuefamilycoherent || workgroupcoherent ||
subgroupcoherent || shadercallcoherent;
@ -639,6 +640,7 @@ public:
unsigned nonprivate : 1;
unsigned volatil : 1;
unsigned isImage : 1;
unsigned nonUniform : 1;
void clear() {
coherent = 0;
@ -650,6 +652,7 @@ public:
nonprivate = 0;
volatil = 0;
isImage = 0;
nonUniform = 0;
}
CoherentFlags operator |=(const CoherentFlags &other) {
@ -662,6 +665,7 @@ public:
nonprivate |= other.nonprivate;
volatil |= other.volatil;
isImage |= other.isImage;
nonUniform |= other.nonUniform;
return *this;
}
#endif
@ -727,7 +731,7 @@ public:
spv::Scope scope = spv::ScopeMax, unsigned int alignment = 0);
// use accessChain and swizzle to load an r-value
Id accessChainLoad(Decoration precision, Decoration nonUniform, Id ResultType,
Id accessChainLoad(Decoration precision, Decoration l_nonUniform, Decoration r_nonUniform, Id ResultType,
spv::MemoryAccessMask memoryAccess = spv::MemoryAccessMaskNone, spv::Scope scope = spv::ScopeMax,
unsigned int alignment = 0);