From 482ba893d596cfbd97efda92cac2fc4860d01c66 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <mgraesslin@kde.org>
Date: Sun, 26 Jun 2011 18:51:08 +0200
Subject: [PATCH] Magnifier requires OpenGL

---
 effects/magnifier/magnifier.cpp | 6 ++++++
 effects/magnifier/magnifier.h   | 1 +
 2 files changed, 7 insertions(+)

diff --git a/effects/magnifier/magnifier.cpp b/effects/magnifier/magnifier.cpp
index 74e0d8ea0e..5fea59c10d 100644
--- a/effects/magnifier/magnifier.cpp
+++ b/effects/magnifier/magnifier.cpp
@@ -34,6 +34,7 @@ namespace KWin
 {
 
 KWIN_EFFECT(magnifier, MagnifierEffect)
+KWIN_EFFECT_SUPPORTED(magnifier, MagnifierEffect::supported())
 
 const int FRAME_WIDTH = 5;
 
@@ -55,6 +56,11 @@ MagnifierEffect::MagnifierEffect()
     reconfigure(ReconfigureAll);
 }
 
+bool MagnifierEffect::supported()
+{
+    return effects->compositingType() == OpenGLCompositing;
+}
+
 void MagnifierEffect::reconfigure(ReconfigureFlags)
 {
     KConfigGroup conf = EffectsHandler::effectConfig("Magnifier");
diff --git a/effects/magnifier/magnifier.h b/effects/magnifier/magnifier.h
index 33d4c73313..0ea3adabae 100644
--- a/effects/magnifier/magnifier.h
+++ b/effects/magnifier/magnifier.h
@@ -36,6 +36,7 @@ public:
     virtual void prePaintScreen(ScreenPrePaintData& data, int time);
     virtual void paintScreen(int mask, QRegion region, ScreenPaintData& data);
     virtual void postPaintScreen();
+    static bool supported();
 private slots:
     void zoomIn();
     void zoomOut();