--- a/src/opengl/qglextensions.cpp	Fri Sep 17 08:34:18 2010 +0300
+++ b/src/opengl/qglextensions.cpp	Mon Oct 04 01:19:32 2010 +0300
@@ -255,6 +255,10 @@
     glFramebufferTextureLayerEXT = (_glFramebufferTextureLayerEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureLayerEXT"));
     glFramebufferTextureFaceEXT = (_glFramebufferTextureFaceEXT) ctx->getProcAddress(QLatin1String("glFramebufferTextureFaceEXT"));
 
+    // Must at least have the FragmentShader extension to continue.
+    if (!(QGLExtensions::glExtensions() & QGLExtensions::FragmentShader))
+        return false;
+
     glCreateShader = (_glCreateShader) ctx->getProcAddress(QLatin1String("glCreateShader"));
     if (glCreateShader) {
         glShaderSource = (_glShaderSource) ctx->getProcAddress(QLatin1String("glShaderSource"));