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On-the-fly generation of normal maps from a greyscale input (in this case, a simple smoke particle system). Looks rather nice if I do say so myself. [cool] A little slow here, probably because my FX5200 isn't too hot at GLSL shaders. Not optimised at all really, so probably possible to gain quite a bit of speed here and there.

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Yes, it's just a bunch of simple circular particles that float upwards and fade out.

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