File 0001-Fix-flickering-with-Qt-5.12.patch of Package kwin5

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File 0001-Fix-flickering-with-Qt-5.12.patch of Package kwin5 (Revision f814b35f41147bb6b8009c449fdb44d3)

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From 4c6ce0a39e2a3d2973bb8d5ded3f35f43a061330 Mon Sep 17 00:00:00 2001
From: Alexander Volkov <a.volkov@rusbitech.ru>
Date: Fri, 18 Jan 2019 20:48:08 +0100
Subject: [PATCH] Fix flickering with Qt 5.12

Summary:
KWin expects Qt to produce xcb_glx_buffer_swap_complete_event_t
events with DRI2, but Qt 5.12 initializes GLX integration only
when required, e.g. when a window with OpenGL support is
created or when availability of OpenGL is checked.

So use QOpenGLContext::supportsThreadedOpenGL() to force
initialization of GLX integration in the Qt's xcb plugin.

https://bugzilla.opensuse.org/show_bug.cgi?id=1120090

Reviewers: #kwin

Subscribers: fvogt, filipf, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D18366
---
 plugins/platforms/x11/standalone/glxbackend.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plugins/platforms/x11/standalone/glxbackend.cpp b/plugins/platforms/x11/standalone/glxbackend.cpp
index a2c570e59..af4bdca71 100644
--- a/plugins/platforms/x11/standalone/glxbackend.cpp
+++ b/plugins/platforms/x11/standalone/glxbackend.cpp
@@ -115,6 +115,8 @@ GlxBackend::GlxBackend(Display *display)
     , haveSwapInterval(false)
     , m_x11Display(display)
 {
+     // Force initialization of GLX integration in the Qt's xcb backend
+     QOpenGLContext::supportsThreadedOpenGL();
 }
 
 static bool gs_tripleBufferUndetected = true;
-- 
2.20.1

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File 0001-Fix-flickering-with-Qt-5.12.patch of Package kwin5 (Revision f814b35f41147bb6b8009c449fdb44d3)

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