From 3b4a50d74059a26af2ed8c37fb2042f33ba7cf2c Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Thu, 13 Apr 2023 10:34:08 -0700
Subject: Fix scalar swizzle write. (#2801)

Co-authored-by: Yong He <yhe@nvidia.com>
---
 source/slang/slang-ir.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'source')

diff --git a/source/slang/slang-ir.cpp b/source/slang/slang-ir.cpp
index e624ef1fd..92da981ad 100644
--- a/source/slang/slang-ir.cpp
+++ b/source/slang/slang-ir.cpp
@@ -4690,6 +4690,11 @@ namespace Slang
         {
             type = getVectorType(matrixType->getElementType(), matrixType->getColumnCount());
         }
+        else if (auto basicType = as<IRBasicType>(basePtrType->getValueType()))
+        {
+            // HLSL support things like float.x, in which case we just return the base pointer.
+            return basePtr;
+        }
         SLANG_RELEASE_ASSERT(type);
         auto inst = createInst<IRGetElementPtr>(
             this,
-- 
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