I’m working on terrain for a project. I want to be able to have several layers of textures on the terrain at different locations.
( Eventually I want these locations to be edited in a map editor, but thats off topic for now )
The locations are decided based on the height of each polygon. Low polygon = sand; High Polygon = grass; I first lay out the entire terrain mesh and then split it into 2 display lists based on the layers. And apply different textures to them when they are drawn.
http://img253.imageshack.us/img253/5629/examplewz3.png
As you can see this leaves very noticeable borders.
How could I interpolate these textures as I can per-vertex colors. I see it done in games all the time.
http://www.bclhome.com/modeling/ut02.jpg
I don’t mind rewriting everything I have so far 