   Terrains and multiple textures
  I have been trying to think of the best method for rendering a terrain with multiple textures, such that different parts of the terrain will be influenced by different textures.  (Enabling me to ''paint'' on textures in an editor, for instance).  The problem is that textured areas need to blend into other textured areas.  Would this be possible with multitexturing?  And if so, would be worth rendering a terrain with, for example, 6 different textures?  Would this be too slow?  The only other method that seemed somewhat reasonable was to have alpha values for each vertex in the terrain - one per texture.  Then I could go through each texture in the terrain and draw the terrain each time with blending and GL_EQUAL depth testing, only drawing triangles with vertex alphas > 0 for that texture.  Would this be reasonable?  Would this be too slow?  Anyway, I seem to be finding myself stuck in bogs of doubt with every solution I come up with.  I would greatly appreciate any advice, comments, or suggestions.  Thanks for your time.    -----------------------------I never chew my cabbage twice 
This thread explains how to do it pretty well.   You have to remember that you''re unique, just like everybody else. ;  thanks, that helped a lot.  too bad i didn''t see it before i posted...  