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Rendering Heightmap using texture data - ardowz - Feb 17, 2014 03:25 PM

I'm following this tutorial to render terrain: http://www.videotutorialsrock.com/opengl_tutorial/terrain/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?


RE: Rendering Heightmap using texture data - SethWillits - Feb 19, 2014 12:25 PM

Ok.


Do you have an actual question?


RE: Rendering Heightmap using texture data - ardowz - Feb 25, 2014 09:10 AM

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.


RE: Rendering Heightmap using texture data - SethWillits - Feb 25, 2014 10:25 AM

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.