1 files changed, 10 insertions, 2 deletions
diff --git a/source/slang/emit.cpp b/source/slang/emit.cpp
index 309a356f4..0c39a98bd 100644
--- a/source/slang/emit.cpp
+++ b/source/slang/emit.cpp
@@ -2812,8 +2812,16 @@ struct EmitVisitor
         // TODO(tfoley): technically have to apply substitution here too...
         if (auto initExpr = declRef.getDecl()->Expr)
         {
-            Emit(" = ");
-            EmitExpr(initExpr);
+            if (declRef.As<ParameterSyntaxNode>()
+                && context->shared->target == CodeGenTarget::GLSL)
+            {
+                // Don't emit default parameter values when lowering to GLSL
+            }
+            else
+            {
+                Emit(" = ");
+                EmitExpr(initExpr);
+            }
         }
     }