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SPV: Implement GLSL interpolation built-in functions.

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This commit is contained in:
Rex Xu
2015-12-08 17:12:09 +08:00
parent c92e370e87
commit 7a26c176ce
4 changed files with 190 additions and 3 deletions
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19
SPIRV/GlslangToSpv.cpp
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@@ -822,7 +822,8 @@ bool TGlslangToSpvTraverser::visitUnary(glslang::TVisit /* visit */, glslang::TI
if (node->getOp() == glslang::EOpAtomicCounterIncrement ||
node->getOp() == glslang::EOpAtomicCounterDecrement ||
node->getOp() == glslang::EOpAtomicCounter)
node->getOp() == glslang::EOpAtomicCounter ||
node->getOp() == glslang::EOpInterpolateAtCentroid)
operand = builder.accessChainGetLValue(); // Special case l-value operands
else
operand = builder.accessChainLoad(convertGlslangToSpvType(node->getOperand()->getType()));
@@ -1174,6 +1175,11 @@ bool TGlslangToSpvTraverser::visitAggregate(glslang::TVisit visit, glslang::TInt
if (arg == 1)
lvalue = true;
break;
case glslang::EOpInterpolateAtSample:
case glslang::EOpInterpolateAtOffset:
if (arg == 0)
lvalue = true;
break;
case glslang::EOpAtomicAdd:
case glslang::EOpAtomicMin:
case glslang::EOpAtomicMax:
@@ -2508,7 +2514,9 @@ spv::Id TGlslangToSpvTraverser::createUnaryOperation(glslang::TOperator op, spv:
case glslang::EOpFwidthCoarse:
unaryOp = spv::OpFwidthCoarse;
break;
case glslang::EOpInterpolateAtCentroid:
libCall = spv::GLSLstd450InterpolateAtCentroid;
break;
case glslang::EOpAny:
unaryOp = spv::OpAny;
break;
@@ -2840,7 +2848,12 @@ spv::Id TGlslangToSpvTraverser::createMiscOperation(glslang::TOperator op, spv::
case glslang::EOpRefract:
libCall = spv::GLSLstd450Refract;
break;
case glslang::EOpInterpolateAtSample:
libCall = spv::GLSLstd450InterpolateAtSample;
break;
case glslang::EOpInterpolateAtOffset:
libCall = spv::GLSLstd450InterpolateAtOffset;
break;
case glslang::EOpAddCarry:
opCode = spv::OpIAddCarry;
typeId = builder.makeStructResultType(typeId0, typeId0);