From 149e97fcb9e3cf98bda8b6561cc05b9240a149ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20L=C3=BCbking?= <thomas.luebking@gmail.com>
Date: Sun, 22 Sep 2013 00:36:47 +0200
Subject: [PATCH] reset invert shader on viewport resize

General problem known from bug #325154

BUG: 325154
FXED-IN: 4.11.2
REVIEW: 112877
---
 effects/invert/invert.cpp | 6 ++++++
 effects/invert/invert.h   | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/effects/invert/invert.cpp b/effects/invert/invert.cpp
index c412e31644..291aa6b017 100644
--- a/effects/invert/invert.cpp
+++ b/effects/invert/invert.cpp
@@ -56,6 +56,7 @@ InvertEffect::InvertEffect()
     b->setGlobalShortcut(KShortcut(Qt::CTRL + Qt::META + Qt::Key_U));
     connect(b, SIGNAL(triggered(bool)), this, SLOT(toggleWindow()));
     connect(effects, SIGNAL(windowClosed(KWin::EffectWindow*)), this, SLOT(slotWindowClosed(KWin::EffectWindow*)));
+    connect(effects, SIGNAL(screenGeometryChanged(const QSize&)), this, SLOT(resetShader()));
 }
 
 InvertEffect::~InvertEffect()
@@ -175,6 +176,11 @@ bool InvertEffect::provides(Feature f)
     return f == ScreenInversion;
 }
 
+void InvertEffect::resetShader()
+{
+    ShaderManager::instance()->resetShader(m_shader, ShaderManager::GenericShader);
+}
+
 } // namespace
 
 #include "invert.moc"
diff --git a/effects/invert/invert.h b/effects/invert/invert.h
index 908eef4aff..ef6cd91424 100644
--- a/effects/invert/invert.h
+++ b/effects/invert/invert.h
@@ -54,6 +54,9 @@ public slots:
     void toggleWindow();
     void slotWindowClosed(KWin::EffectWindow *w);
 
+private Q_SLOTS:
+    void resetShader();
+
 protected:
     bool loadData();