From 81f38abe6d6db94f56c0d2e857fd90cc1a73c293 Mon Sep 17 00:00:00 2001
From: Alex Nemeth <alex19930329@gmail.com>
Date: Thu, 31 May 2018 21:02:05 +0200
Subject: [PATCH] [effects/blur] Check for blitting support

Summary:
In D12678 blur was changed to use `blitFromFramebuffer()` instead of `glCopyTexSubImage2D()`
Now it checks if the GPU supports it.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D13246
---
 effects/blur/blur.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/effects/blur/blur.cpp b/effects/blur/blur.cpp
index fd9d8a201b..33511d30aa 100644
--- a/effects/blur/blur.cpp
+++ b/effects/blur/blur.cpp
@@ -333,7 +333,7 @@ bool BlurEffect::enabledByDefault()
 
 bool BlurEffect::supported()
 {
-    bool supported = effects->isOpenGLCompositing() && GLRenderTarget::supported();
+    bool supported = effects->isOpenGLCompositing() && GLRenderTarget::supported() && GLRenderTarget::blitSupported();
 
     if (supported) {
         int maxTexSize;