Fix optix varying legalization. (#6089)

* Fix optix varying legalization.

* Add test.

1 files changed, 2 insertions, 0 deletions

diff --git a/source/slang/slang-ir-legalize-varying-params.cpp b/source/slang/slang-ir-legalize-varying-params.cpp
index 5a18b533a..a98290545 100644
--- a/source/slang/slang-ir-legalize-varying-params.cpp
+++ b/source/slang/slang-ir-legalize-varying-params.cpp
@@ -1053,6 +1053,8 @@ struct CUDAEntryPointVaryingParamLegalizeContext : EntryPointVaryingParamLegaliz
         IRType* typeToFetch,
         IRBuilder* builder)
     {
+        if (auto ptrValType = tryGetPointedToType(builder, typeToFetch))
+            typeToFetch = ptrValType;
         if (auto structType = as<IRStructType>(typeToFetch))
         {
             List<IRInst*> fieldVals;