| Pre-Calculated
is the easiest technique to simulate bumps on a surface. A good example
of this technique is the Mask Screensaver that is available for PCX2. You
can find an mpg-file of that screensaver at www.powervr.com.
This technique
uses a light and shadow map that was calculated at the time the demo was
coded. You can use this technique when camera - objects and lights make
no real movements compared to each other and in the demo this is the case.
The position of the bump mapped balls stays the same in relation to camera
and light source they stay in the same position and move in a plane. This
lightmap is blended on top of the texture. The effects are good but limited.
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