I wrote and run my first pixel/vertex shader code yesterday on my friend''s Radeon9700. When i tried to run the program, compiled on his machine, on my Radeon8500, the program reported an "Invalid Profile Type" error (its generated when i call the cgGLGetLatestProfile function for my PS profile). I use one context with 2 profiles with 2 programs (one for both ps and vs) and. I load the programs from file and compile them at runtime. Could anyone tell me something about this problem? I dont really understand these profiles, the different versions of shaders and compatibility. I would be happy too, if someone could show me a good tute about this topic. Thank you in advance! "Knowledge is no more expensive than ignorance, and at least as satisfying." -Barrin

Take a look at the NVidia CG Homepage, the information you want might be there somewhere