After recent optimizations __GL_YIELD=NOTHING does not give noticeable

performance impact with either glxgears or the launch feedback icon,
so KWIN_NVIDIA_HACK=1 is the default again.
CCMAIL: kwin@kde.org


svn path=/trunk/KDE/kdebase/workspace/; revision=787993

nvidiahack.cpp

@@ -38,8 +38,13 @@ class kwinnvidiahack
 kwinnvidiahack::kwinnvidiahack()
     {
     const char* env = getenv( "KWIN_NVIDIA_HACK" );
+#if 1 // turned on by default
+    if( env == NULL || env[ 0 ] != '0' )
+        setenv( "__GL_YIELD", "NOTHING", true );
+#else // turned off by default
     if( env != NULL && env[ 0 ] != '0' )
         setenv( "__GL_YIELD", "NOTHING", true );
+#endif
     }
 
 kwinnvidiahack kwinnvidiahackinst;