From 99e6f3a2eff8b1f3459a32fc2542776c0249c9b7 Mon Sep 17 00:00:00 2001
From: Hans-Kristian Arntzen <post@arntzen-software.no>
Date: Wed, 30 Oct 2024 19:20:22 +0100
Subject: [PATCH] MSL: Fix crash when per-primitive variables are not used.

---
 spirv_msl.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spirv_msl.cpp b/spirv_msl.cpp
index 650fd7ad0..cf5265ac8 100644
--- a/spirv_msl.cpp
+++ b/spirv_msl.cpp
@@ -19232,7 +19232,6 @@ void CompilerMSL::emit_mesh_outputs()
 
 	if (mesh_out_per_primitive != 0 || builtin_mesh_primitive_indices_id != 0)
 	{
-		auto &type_prim = get<SPIRType>(mesh_out_per_primitive);
 		if (num_invocations < mode.output_primitives)
 		{
 			statement("for (uint spvPI = gl_LocalInvocationIndex; spvPI < spvMeshSizes.y; spvPI += spvThreadCount)");
@@ -19268,6 +19267,7 @@ void CompilerMSL::emit_mesh_outputs()
 
 		if (mesh_out_per_primitive != 0)
 		{
+			auto &type_prim = get<SPIRType>(mesh_out_per_primitive);
 			statement("spvPerPrimitive spvP = {};");
 			for (uint32_t index = 0; index < uint32_t(type_prim.member_types.size()); ++index)
 			{