From 2a6a4e9667c908586b8ebcfef45836179212c192 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fredrik=20H=C3=B6glund?= <fredrik@kde.org>
Date: Fri, 4 Feb 2011 21:44:50 +0100
Subject: [PATCH] kwin: Fix the glBlendFunc() in the shader case.

The RGB values were being multiplied by the alpha value twice.
---
 scene_opengl.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scene_opengl.cpp b/scene_opengl.cpp
index a4bd2fdb32..a9cb18bc04 100644
--- a/scene_opengl.cpp
+++ b/scene_opengl.cpp
@@ -723,7 +723,7 @@ void SceneOpenGL::Window::prepareShaderRenderStates(TextureType type, double opa
     if (!opaque) {
         glEnable(GL_BLEND);
         if (alpha) {
-            glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+            glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
         } else {
             glBlendColor((float)opacity, (float)opacity, (float)opacity, (float)opacity);
             glBlendFunc(GL_ONE, GL_ONE_MINUS_CONSTANT_ALPHA);