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Conversion of RGBA values

This step applies only if the GL is in RGBA mode, and then only if format is neither STENCIL_INDEX nor DEPTH_COMPONENT. The R, G, B, and A values form a group of elements. Each element is taken to be a fixed-point value in [0,1] with m bits, where m is the number of bits in the corresponding color component of the selected buffer (see section 2.13.9).

David Blythe
Sat Mar 29 02:23:21 PST 1997