If anyone has a minute or two to give a brief on what multitexturing is, I would preciate it.

I am wondering if it will solve my problem which is:

I have a terrain database rendered in opengl, and I am using satellite photos for texture. This is great at >= 200 ft radar alt, but below this the texture washes out and it is hard (visually) to tell if you are 100 or 10 feet off of the ground. I would like to be able to fade in a new texture pattern when close to the ground that has enough detail to give better visual cues (some repeated dirt or grass pattern, e.g.)

Is multitexturing what I am looking for?


Multitexuring is simply applying more than one texture on one polygon, one after another. So you can blend, add, replace, whatever you can with single texturing.

But for your problem, I think it’s worth a try.

As I understand, you want to put a detail texture on the terrain.

Some SGI hardware has the special extension for it : GL_SGIS_detail_texture

You can do it with multitexturing, but manually.