I'm following this tutorial to render terrain: http://www.videotutorialsrock.com/opengl...n/home.php

But I want to use a texture to create the heightmap so that I have the option of creating dynamic textures and dynamic heightmap rendering as well?

Ok.


Do you have an actual question?

Pardon my ill formed question, I was wondering if I could use the same concept to render the terrain using a dynamic height map created in runtime rather than pointing to a file.

I ended up using libnoise to generate my dynamic height map but it still is rather slow. I'm trying to create an ocean, that is why I wanted a dynamic hight map which would behave the same as the waves.

You can certainly do it, but it's not efficient so it's not a smart idea.

You'd be better off using a vertex shader to manipulate the vertices, either with some math or sample into a noise texture to get randomized values.