From 62e98af40f97b865aeed897e90231e76b329d614 Mon Sep 17 00:00:00 2001
From: Laszlo Agocs <laszlo.agocs@qt.io>
Date: Thu, 9 Jan 2020 15:08:11 +0100
Subject: rhi: gl: Do not issue glMemoryBarrier when compute is not supported

Avoid crashing in a < GLES 3.1 and < GL 4.3 contexts.

Change-Id: I0f713a527890ec209c967ebb6c5bb3baa77d9a31
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
---
 src/gui/rhi/qrhigles2.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/gui/rhi/qrhigles2.cpp b/src/gui/rhi/qrhigles2.cpp
index afa3a397e6..81a1daa16b 100644
--- a/src/gui/rhi/qrhigles2.cpp
+++ b/src/gui/rhi/qrhigles2.cpp
@@ -2287,12 +2287,13 @@ void QRhiGles2::executeCommandBuffer(QRhiCommandBuffer *cb)
                     barriers |= GL_ALL_BARRIER_BITS;
                 }
             }
-            if (barriers)
+            if (barriers && caps.compute)
                 f->glMemoryBarrier(barriers);
         }
             break;
         case QGles2CommandBuffer::Command::Barrier:
-            f->glMemoryBarrier(cmd.args.barrier.barriers);
+            if (caps.compute)
+                f->glMemoryBarrier(cmd.args.barrier.barriers);
             break;
         default:
             break;
-- 
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