Fix `sessionDesc.defaultMatrixLayoutMode` being ineffective. (#3753)

* Fix `sessionDesc.defaultMatrixLayoutMode` being ineffective.

* Fix matrix layout in buffer pointer.

* Attempt to fix.

* Fix buffer element type lowering for buffer pointers.

* Add comment.

* Fix test.

* Fix member lookup in `Ref<T>`.

* Fix validation error.

* Enhance test.

1 files changed, 4 insertions, 0 deletions

diff --git a/source/slang/slang-check-type.cpp b/source/slang/slang-check-type.cpp
index 0ab3998d8..217d1b545 100644
--- a/source/slang/slang-check-type.cpp
+++ b/source/slang/slang-check-type.cpp
@@ -33,6 +33,10 @@ namespace Slang
         {
             return ptrType->getValueType();
         }
+        else if (auto refType = as<RefType>(type))
+        {
+            return refType->getValueType();
+        }
         return nullptr;
     }