SPV: Implement GLSL interpolation built-in functions.
diff --git a/SPIRV/GlslangToSpv.cpp b/SPIRV/GlslangToSpv.cpp
index 0fff30e..4ed3af7 100755
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -822,7 +822,8 @@
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 @@
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 @@
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 @@
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);