Water
The water that I generate is based on the water technique used in "An Image
Synthesizer" (Ken Perlin). It is largely the same, with a few small changes.
This image shows the bump mapping that is applied to the water.
As you can see, the water doesn't look very realistic when only
the bump-map is present.
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This image shows what the water looks when the the surface is
reflective. Note that I have used an approximation of Fresnel
reflections. This causes the water reflectivity to vary with
the viewing angle.
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This final image shows the water after it has been bump-mapped
and is made reflective.
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