From 43842cefb3e043ecda2bfa61a63275c48c08874c Mon Sep 17 00:00:00 2001
From: Hans-Kristian Arntzen <post@arntzen-software.no>
Date: Thu, 24 Oct 2019 11:15:35 +0200
Subject: [PATCH] MSL: Cleanup decoration forwarding for SampleMask.

Don't want to create Meta instances unless we have to.
---
 spirv_msl.cpp | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/spirv_msl.cpp b/spirv_msl.cpp
index e861588c..7d913f5f 100644
--- a/spirv_msl.cpp
+++ b/spirv_msl.cpp
@@ -5299,10 +5299,8 @@ void CompilerMSL::emit_instruction(const Instruction &instruction)
 	{
 		uint32_t id = ops[1];
 		uint32_t ptr = ops[2];
-		if (ir.meta[ptr].decoration.builtin_type == BuiltInSampleMask)
-		{
-			ir.meta[id].decoration.builtin_type = BuiltInSampleMask;
-		}
+		if (BuiltIn(get_decoration(ptr, DecorationBuiltIn)) == BuiltInSampleMask)
+			set_decoration(id, DecorationBuiltIn, BuiltInSampleMask);
 		CompilerGLSL::emit_instruction(instruction);
 		break;
 	}