From db7a072c2be91b6c00f76cab69cff1a58519a402 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <kde@martin-graesslin.com>
Date: Sat, 1 Jan 2011 17:57:09 +0100
Subject: [PATCH] Blending is also useful in legacy mode...

---
 effects/cube/cube.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/effects/cube/cube.cpp b/effects/cube/cube.cpp
index 03a3fe83f7..9b771f70c9 100644
--- a/effects/cube/cube.cpp
+++ b/effects/cube/cube.cpp
@@ -522,11 +522,11 @@ void CubeEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
                 alpha = 0.3 + 0.4 * timeLine.value();
             if( stop )
                 alpha = 0.3 + 0.4 * ( 1.0 - timeLine.value() );
+            glEnable( GL_BLEND );
+            glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
             ShaderManager *shaderManager = ShaderManager::instance();
             if (shaderManager->isValid() && m_reflectionShader->isValid()) {
                 // ensure blending is enabled - no attribute stack
-                glEnable( GL_BLEND );
-                glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
                 shaderManager->pushShader(m_reflectionShader);
                 QMatrix4x4 windowTransformation;
                 windowTransformation.translate(rect.x() + rect.width()*0.5f, 0.0, 0.0);
@@ -554,7 +554,6 @@ void CubeEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
                 vbo->render(GL_TRIANGLES);
 
                 shaderManager->popShader();
-                glDisable( GL_BLEND );
             } else {
 #ifndef KWIN_HAVE_OPENGLES
                 glColor4f( 0.0, 0.0, 0.0, alpha );
@@ -572,6 +571,7 @@ void CubeEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
                 glPopMatrix();
 #endif
             }
+            glDisable( GL_BLEND );
             PaintClipper::pop( QRegion( rect ));
             }
         glEnable( GL_CULL_FACE );