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HLSL: Add gather, improve proto generator machine for upcoming 2DMS/Shadow

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This commit is contained in:
LoopDawg 2016-07-22 08:28:11 -06:00
parent 630e1bc636
commit a2f3d285a8
15 changed files with 2266 additions and 329 deletions
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29
hlsl/hlslParseHelper.cpp
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@ -1221,6 +1221,35 @@ void HlslParseContext::decomposeSampleMethods(const TSourceLoc& loc, TIntermType
break;
}
case EOpMethodGather:
{
TIntermTyped* argTex = argAggregate->getSequence()[0]->getAsTyped();
TIntermTyped* argSamp = argAggregate->getSequence()[1]->getAsTyped();
TIntermTyped* argCoord = argAggregate->getSequence()[2]->getAsTyped();
TIntermTyped* argOffset = nullptr;
// Offset is optional
if (argAggregate->getSequence().size() == 4)
argOffset = argAggregate->getSequence()[3]->getAsTyped();
const TOperator textureOp = (argOffset == nullptr ? EOpTextureGather : EOpTextureGatherOffset);
TIntermAggregate* txgather = new TIntermAggregate(textureOp);
TIntermAggregate* txcombine = handleSamplerTextureCombine(loc, argTex, argSamp);
txgather->getSequence().push_back(txcombine);
txgather->getSequence().push_back(argCoord);
if (argOffset != nullptr)
txgather->getSequence().push_back(argOffset);
txgather->setType(node->getType());
txgather->setLoc(loc);
node = txgather;
break;
}
default:
break; // most pass through unchanged
}