OOps, I replied to an existing mail by mistake and so my message appeared as an "submessage". Ok, I looked again over my first mail and found it to short und undetailed. So here a new try.. for clearance: HOGL = The separate package, not that library that comes with ghc source ghcOGL = The library you get when you compile ghc and give --with-opengl option. I'm unable to translate any texture sample from the HOGL api to the ghcOGL api. I don't find needed functions. In the source there is a hint that the Texturing.hs corresponds to the section 3.8 of the OGL Specs. Where are all the functions like genTextures, bindTexture, texImage1D, texImage2D, and so on... that are specified in this section? In the HOGL is everything fine, but in the ghcOGL lacks of these functions without any hint where to find them. Any little advice is welcome and will help me. Cheers Patrick