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compositing

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hallo everyone.. i was just wondering if anyone knows how it''s usually done in demos etc., when "filmgrain" is added ontop of everything? grabbing the framebuffer and then manually tweaking every pixel? that seems slow? or blending as a texture? cheers. stoffe

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I do not know what effect you mean so I can not answer your question. Perhaps someone has a answer if you could give a concrete example.

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