"Extremism is so easy. You've got your position, and that's it. It doesn't take much thought. And when you go far enough to the right, you meet the same idiots coming around from the left."
- Clint Eastwood
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This is a demo showing how to create a hot air effect with dependent texture reads. First the world is rendered to a texture, then to the screen. Then it creates a fire with a procedural texture. This fire texture is then used both as colors and as an offset of the texture coords for the texture I rendered to. The final result is an effect where it looks like the hot air around the fire refracts the light from the background.
Executable