From 982f0412045966e8070c79bd2387a6ab61b9690f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <mgraesslin@kde.org>
Date: Thu, 28 Apr 2011 22:06:21 +0200
Subject: [PATCH] KWin requires Mesa 7.10 for OpenGL/GLX

If OpenGL compositing is tried in GLX with a Mesa driver not
at least 7.10 we stop OpenGL compositing.

For OpenGL ES we just assume that all Mesa drivers are fine, so
no requirement.
---
 scene_opengl_glx.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scene_opengl_glx.cpp b/scene_opengl_glx.cpp
index cf8f7cc947..6adb0ba7bc 100644
--- a/scene_opengl_glx.cpp
+++ b/scene_opengl_glx.cpp
@@ -70,6 +70,10 @@ SceneOpenGL::SceneOpenGL(Workspace* ws)
         kError(1212) << "GL_ARB_texture_non_power_of_two and GL_ARB_texture_rectangle missing";
         return; // error
     }
+    if (GLPlatform::instance()->isMesaDriver() && GLPlatform::instance()->mesaVersion() < kVersionNumber(7, 10)) {
+        kError(1212) << "KWin requires at least Mesa 7.10 for OpenGL compositing.";
+        return;
+    }
     if (db)
         glDrawBuffer(GL_BACK);
     // Check whether certain features are supported