Can't get it to work on 1.7.1.
Changed dimension2di to dimension2du in:
IPostProc* ppRenderer = new CRendererPostProc( smgr, dimension2du( 1024, 512 ), true, true, SColor( 255u, 100u, 101u, 140u ) );
// When setting up the effect, the parameters are:
// Input, size of output, effect ID (see ...