Properly plumbing layout for global varyings. (#6198)

* Properly plumbing layout for global varyings.

* Fix test.

1 files changed, 21 insertions, 18 deletions

diff --git a/source/slang/slang-check-decl.cpp b/source/slang/slang-check-decl.cpp
index 3453d0538..33319ca8f 100644
--- a/source/slang/slang-check-decl.cpp
+++ b/source/slang/slang-check-decl.cpp
@@ -842,26 +842,29 @@ bool isGlobalShaderParameter(VarDeclBase* decl)
     if (!isGlobalDecl(decl))
         return false;
 
-    // A global variable marked `static` indicates a traditional
-    // global variable (albeit one that is implicitly local to
-    // the translation unit)
-    //
-    if (decl->hasModifier<HLSLStaticModifier>())
-        return false;
+    for (auto modifier : decl->modifiers)
+    {
+        // A global variable marked `static` indicates a traditional
+        // global variable (albeit one that is implicitly local to
+        // the translation unit)
+        //
+        if (as<HLSLStaticModifier>(modifier))
+            return false;
 
-    // While not normally allowed, out variables are not constant
-    // parameters, this can happen for example in GLSL mode
-    if (decl->hasModifier<OutModifier>())
-        return false;
-    if (decl->hasModifier<InModifier>())
-        return false;
+        // While not normally allowed, out variables are not constant
+        // parameters, this can happen for example in GLSL mode
+        if (as<OutModifier>(modifier))
+            return false;
+        if (as<InModifier>(modifier))
+            return false;
 
-    // The `groupshared` modifier indicates that a variable cannot
-    // be a shader parameters, but is instead transient storage
-    // allocated for the duration of a thread-group's execution.
-    //
-    if (decl->hasModifier<HLSLGroupSharedModifier>())
-        return false;
+        // The `groupshared` modifier indicates that a variable cannot
+        // be a shader parameters, but is instead transient storage
+        // allocated for the duration of a thread-group's execution.
+        //
+        if (as<HLSLGroupSharedModifier>(modifier))
+            return false;
+    }
 
     return true;
 }