From fab764f6c6fb07ef80239bccdb7e1c356c69644a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20L=C3=BCbking?= <thomas.luebking@gmail.com>
Date: Mon, 25 Apr 2011 16:30:10 +0200
Subject: [PATCH] only use lanczos filter when either direction is scaled below
 90%

BUG: 263653
---
 lanczosfilter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lanczosfilter.cpp b/lanczosfilter.cpp
index aa2f0a1205..cbd0af5128 100644
--- a/lanczosfilter.cpp
+++ b/lanczosfilter.cpp
@@ -164,7 +164,7 @@ void LanczosShader::createOffsets(int count, float width, Qt::Orientation direct
 void LanczosFilter::performPaint(EffectWindowImpl* w, int mask, QRegion region, WindowPaintData& data)
 {
 #ifdef KWIN_HAVE_OPENGL_COMPOSITING
-    if (effects->compositingType() == KWin::OpenGLCompositing &&
+    if (effects->compositingType() == KWin::OpenGLCompositing && (data.xScale < 0.9 || data.yScale < 0.9) &&
             KGlobalSettings::graphicEffectsLevel() & KGlobalSettings::SimpleAnimationEffects) {
         if (!m_inited)
             init();