From 74fa33497f3c17b759b5555c51804fa295a93816 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20L=C3=BCbking?= <thomas.luebking@gmail.com>
Date: Mon, 7 Jan 2013 21:16:38 +0100
Subject: [PATCH] reset generic shader after zoom

REVIEW: 108252
BUG: 304435
---
 effects/zoom/zoom.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/effects/zoom/zoom.cpp b/effects/zoom/zoom.cpp
index 9d9444a882..88a5e1dd42 100644
--- a/effects/zoom/zoom.cpp
+++ b/effects/zoom/zoom.cpp
@@ -227,7 +227,9 @@ void ZoomEffect::reconfigure(ReconfigureFlags)
 
 void ZoomEffect::prePaintScreen(ScreenPrePaintData& data, int time)
 {
+    bool altered = false;
     if (zoom != target_zoom) {
+        altered = true;
         double diff = time / animationTime(500.0);
         if (target_zoom > zoom)
             zoom = qMin(zoom * qMax(1 + diff, 1.2), target_zoom);
@@ -237,6 +239,8 @@ void ZoomEffect::prePaintScreen(ScreenPrePaintData& data, int time)
 
     if (zoom == 1.0) {
         showCursor();
+        if (altered) // reset the generic shader to avoid artifacts in plenty other effects
+            ShaderBinder binder(ShaderManager::GenericShader, true);
     } else {
         hideCursor();
         data.mask |= PAINT_SCREEN_TRANSFORMED;