Test more texture types in Metal (#4333)

This commit adds testing for Metal texture functions with the following
six types that the document says supported:
 - float
 - half
 - int32_t
 - uint32_t
 - int16_t
 - uint16_t

Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/source/slang/slang-emit-metal.cpp b/source/slang/slang-emit-metal.cpp
index 366c51840..794a31e41 100644
--- a/source/slang/slang-emit-metal.cpp
+++ b/source/slang/slang-emit-metal.cpp
@@ -552,13 +552,17 @@ void MetalSourceEmitter::emitSimpleTypeImpl(IRType* type)
         case kIROp_UInt64Type:
         case kIROp_FloatType:
         case kIROp_DoubleType:
-        case kIROp_Int16Type:
-        case kIROp_UInt16Type:
         case kIROp_HalfType:
         {
             m_writer->emit(getDefaultBuiltinTypeName(type->getOp()));
             return;
         }
+        case kIROp_Int16Type:
+            m_writer->emit("short");
+            return;
+        case kIROp_UInt16Type:
+            m_writer->emit("ushort");
+            return;
         case kIROp_IntPtrType:
             m_writer->emit("int64_t");
             return;