Hello! I''m working on a terrain engine at the moment, and I''ve currently got a semi-heightmap textured landscape. By that I mean if a polygon is above, for example, 100.0f of the "ground", it has a snowy texture, if not, it has a dirt texture. This produces a very odd looking seam between the two textures. I would like to add procedural texturing, but I have no resources to help me. I''ve looked on various websites, and found that none of tutorials I''ve found show how to do it. Can anyone explain how to do it, or point me in the direction of a good tutorial? -Thanks -SkyFire360

http://www.sgi.com/software/opengl/advanced98/notes/node73.html
also a demo of a water effect on me page

http://members.xoom.com/myBollux