Texture tiling?

[KlaHyMan]

I don't know exactly if it is the right term.. I have a complex terrain and I'd like to put texture onto it to simulate grass, rocks and snow and whatever else. The question is: how can I achieve the effect of a continuos blend between the different textures? If you can get what I mean then you're super smart and I thank you in advance. :-)

[darkrappey]

bump. its 2006 (6 years after this post ) and I would like to know as well so bump.

[ZbuffeR]

Here is a starter :
http://www.delphi3d.net/articles/vie...terraintex.htm
But tex env combine si really outdated by GLSL, so do not copy the code, only if you target GF3-4 video cards :-)
For GLSL, the OpenGL Shading Language (Orange Book) is great, with ideas on terrain mapping.