Mathias Agopian 1c0bebbc95 fix [2262591] Junk on screen in ERD46 ...

since we're using the GPU for composition, don't use a texture for dimming,
instead simply use an alpha-blended quad.

also workaround what looks like a GL driver bug by calling glFinish() before
glReadPixels().

2009-11-16 14:55:36 -08:00

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