Hi Mark, JP,
I think easiest would
be to render to 3 luminance textures and then combine in another step
into rgb.
Why not render 3 passes into the same RGB texture but just write to one
channel per pass using color masking? You'd save the combine pass.
J-S
--
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Jean-Sebastien Guay jean-sebastien.g...@cm-labs.com
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http://whitestar02.dyndns-web.com/
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