A while ago I ported several examples to GCC, so I could run them on Ubuntu:
It was not a hard job, but hoped I could help people who did not use MS-stuff. GodRays and ToneMapping have problems, because I don't know what file kind of file they were readin, so I made some wild gueses. I did not port anything that contained DirectX, as porting it all to OpenGL would take me too much time.
I hope I can get some feedback on the colour-problem and maybe you want to help to port to OpenGL? Thanks in advance.