From 405d438bf176411247bfd2937fcbb8c0684b0ed7 Mon Sep 17 00:00:00 2001
From: Ellie Hermaszewska <ellieh@nvidia.com>
Date: Tue, 10 Jun 2025 17:33:38 +0800
Subject: Legalise out parameters for vertex shaders on metal (#6943)

* Handle pointer types when getting type cast style

Closes https://github.com/shader-slang/slang/issues/6025

* Move vertex shader out parameters to return type for Metal

Closes https://github.com/shader-slang/slang/issues/6025

* More asserts

* Make struct instead of tuple

* More layout preservation

* Handle same function result

* more layout

* remove layout

* a

* more debug code

* more debug code

* a

* layout working

* refactored

* more tests

* more tests

* fuse loops

* remove unused comments

* Correct filecheck usage

* debug code

* correct name and order of filecheck vars

* simplify

* Address review comments

fix warning

* simplify handling of simple vertex shaders
---
 source/slang/slang-ir.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'source/slang/slang-ir.cpp')

diff --git a/source/slang/slang-ir.cpp b/source/slang/slang-ir.cpp
index 89d7a666e..bf332aaf7 100644
--- a/source/slang/slang-ir.cpp
+++ b/source/slang/slang-ir.cpp
@@ -4156,7 +4156,10 @@ static TypeCastStyle _getTypeStyleId(IRType* type)
     {
         return _getTypeStyleId(matrixType->getElementType());
     }
+    // Try to simplify style if we can, otherwise just handle it unsimplified
     auto style = getTypeStyle(type->getOp());
+    if (style == kIROp_Invalid)
+        style = type->getOp();
     switch (style)
     {
     case kIROp_IntType:
-- 
cgit v1.2.3