Lower varying parameters as pointers instead of SSA values. (#5919)

* Add executable test on matrix-typed vertex input.
* Fix emit logic of matrix layout qualifier.
* Pass fragment shader varying input by constref to allow EvaluateAttributeAtCentroid etc. to be implemented correctly.

1 files changed, 1 insertions, 0 deletions

diff --git a/source/slang/slang-emit-cpp.cpp b/source/slang/slang-emit-cpp.cpp
index f91c4d06e..b0d1fbb4c 100644
--- a/source/slang/slang-emit-cpp.cpp
+++ b/source/slang/slang-emit-cpp.cpp
@@ -310,6 +310,7 @@ SlangResult CPPSourceEmitter::calcTypeName(IRType* type, CodeGenTarget target, S
         }
     case kIROp_NativePtrType:
     case kIROp_PtrType:
+    case kIROp_ConstRefType:
         {
             auto elementType = (IRType*)type->getOperand(0);
             SLANG_RETURN_ON_FAIL(calcTypeName(elementType, target, out));