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Generate correct image operand mask for Offset and ConstOffset(#77)

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This commit is contained in:
Rex Xu 2015-10-11 19:37:48 +08:00
parent 820a22fcc8
commit 86e608133c
2 changed files with 9 additions and 1 deletions
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5
SPIRV/SpvBuilder.cpp
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@ -1188,7 +1188,10 @@ Id Builder::createTextureCall(Decoration precision, Id resultType, bool fetch, b
xplicit = true;
}
if (parameters.offset) {
mask = (ImageOperandsMask)(mask | ImageOperandsOffsetMask);
if (isConstant(parameters.offset))
mask = (ImageOperandsMask)(mask | ImageOperandsConstOffsetMask);
else
mask = (ImageOperandsMask)(mask | ImageOperandsOffsetMask);
texArgs[numArgs++] = parameters.offset;
}
// TBD: if Offset is constant, use ImageOperandsConstOffsetMask

5
SPIRV/SpvBuilder.h
View File

@ -136,6 +136,11 @@ public:
bool isSamplerType(Id typeId) const { return getTypeClass(typeId) == OpTypeSampler; }
bool isSampledImageType(Id typeId) const { return getTypeClass(typeId) == OpTypeSampledImage; }
bool isConstant(Id resultId) const
{
Op opCode = getOpCode(resultId);
return opCode == OpConstantTrue || opCode == OpConstantFalse || opCode == OpConstant || opCode == OpConstantComposite || opCode == OpConstantNull;
}
bool isConstantScalar(Id resultId) const { return getOpCode(resultId) == OpConstant; }
unsigned int getConstantScalar(Id resultId) const { return module.getInstruction(resultId)->getImmediateOperand(0); }