Ive schrieb:
> To make life easier that's the libpng call for getting the
> sRGB chunk information. For the sole purpose of gamma correction you can 
> safely ignore the value that is returned as sRGB_intent.

How about just checking for "png_inf->valid & PNG_INFO_sRGB"? Shouldn't 
that do the same job?

Another thing: The sRGB spec speaks of aiming to achieve an overall 
viewing gamma of 1.125; am I however correct in assuming that decoding 
sRGB-encoded material according to the sRGB decoding function will 
nonetheless reconstruct the /linear/ data?

Otherwise, if sRGB-encoded data was expected to already account for that 
desired viewing gamma, for raytracing purposes it would theoretically 
have to be compensated for, both when decoding and encoding.

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