http://bugs.winehq.org/show_bug.cgi?id=12453
--- Comment #102 from Henri Verbeet hverbeet@gmail.com 2011-02-18 05:12:49 CST --- (In reply to comment #101)
I don't know if this was posted here already, but this (upcoming?) GL extension could solve the sRGB dilemma: http://www.opengl.org/registry/specs/EXT/texture_sRGB_decode.txt
Yes, that's what that extension is meant for. May take a while as I'll probably have to do it on my own time.