Texture : lookup table

texturing in 3 steps

The overall mapping is composed of a surface parameterization and a viewing projection.

texturing in five steps:

1. Compute the object space location of the pixel to be textured.

2. Use a projector function to determine the correct (u, v) texture coordinate.

3. Use corresponder function(s) to find texel.

4. Apply value transform function.

5. Modify illumination equation value.

Texture coordinate generation

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