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Old 01-11-2004, 08:07 PM   #1
killbot
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Default What's NORMAL MAPPING??

i think i have an idea of what it is and what it's purpose of it.


making low poly models look as if they were high res?

if so, what does the actually map look like? is it a grey scale?


thanx,
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Old 01-11-2004, 08:26 PM   #2
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I might be wrong but I have a strong feeling that normal mapping isn't much different from displacement mapping. The only difference is that displacement mapping uses grey scale images where normal mapping uses rgb images. R represents X displacement, G represents Y displacement and B represents Z displacement...
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Old 01-11-2004, 09:02 PM   #3
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yeah, that's essentially right. They're usually generated by building an actual highres object and a lowres object and baking down the surface normal information from the highres into an image, using the lowpoly's UV coordinates.

Here's an example:

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Old 01-11-2004, 11:27 PM   #4
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very interesting

was just wondering cause i've been looking into this new game engine...called the reality engine and it supports normal mapping.

http://www.artificialengine.com/


checkout some of the demos, very nice lighting.
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