Emit SPIRV NonReadable decoration for WTexture* (#6922)

1 files changed, 8 insertions, 2 deletions

diff --git a/source/slang/slang-emit-glsl.cpp b/source/slang/slang-emit-glsl.cpp
index 848d9c08d..5e9fa7f70 100644
--- a/source/slang/slang-emit-glsl.cpp
+++ b/source/slang/slang-emit-glsl.cpp
@@ -1837,8 +1837,9 @@ bool GLSLSourceEmitter::tryEmitGlobalParamImpl(IRGlobalParam* varDecl, IRType* v
 
 void GLSLSourceEmitter::emitImageFormatModifierImpl(IRInst* varDecl, IRType* varType)
 {
-    // As a special case, if we are emitting a GLSL declaration
-    // for an HLSL `RWTexture*` then we need to emit a `format` layout qualifier.
+    // Special cases when emitting a GLSL declaration for HLSL/Slang `RWTexture* and `WTexture*`:
+    // - Emit a `format` layout qualifier.
+    // - Emit `writeonly` memory qualifier for `WTexture*`.
 
     if (auto resourceType = as<IRTextureType>(unwrapArray(varType)))
     {
@@ -1855,6 +1856,11 @@ void GLSLSourceEmitter::emitImageFormatModifierImpl(IRInst* varDecl, IRType* var
         default:
             break;
         }
+
+        if (resourceType->getAccess() == SLANG_RESOURCE_ACCESS_WRITE)
+        {
+            m_writer->emit("writeonly\n");
+        }
     }
 }