From f766fabaa0547eac84b2bf4e2e53e5fa61598147 Mon Sep 17 00:00:00 2001
From: John Kessenich <cepheus@frii.com>
Date: Wed, 28 Aug 2019 00:01:54 -0600
Subject: [PATCH] GLSL: Only require constant for subgroupBroadcast when SPV <
 1.5.

---
 glslang/MachineIndependent/ParseHelper.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/glslang/MachineIndependent/ParseHelper.cpp b/glslang/MachineIndependent/ParseHelper.cpp
index 08fa610c..e8177d3f 100644
--- a/glslang/MachineIndependent/ParseHelper.cpp
+++ b/glslang/MachineIndependent/ParseHelper.cpp
@@ -2155,9 +2155,11 @@ void TParseContext::builtInOpCheck(const TSourceLoc& loc, const TFunction& fnCan
         break;
 
     case EOpSubgroupBroadcast:
-        // <id> must be an integral constant expression.
-        if ((*argp)[1]->getAsConstantUnion() == nullptr)
-            error(loc, "argument must be compile-time constant", "id", "");
+        if (spvVersion.spv < EShTargetSpv_1_5) {
+            // <id> must be an integral constant expression.
+            if ((*argp)[1]->getAsConstantUnion() == nullptr)
+                error(loc, "argument must be compile-time constant", "id", "");
+        }
         break;
 
     case EOpBarrier: