Friday, January 17, 2003

Thursday, January 16, 2003

Higher-Order Surfaces:

- the NV_evaluators ext defines it's own set of evaluators beyond those of OpenGL.
- Like OpenGL evaluators, general evaluators can be used evaluate polynomial
and rational bivariate functions defined relative to the Bezier basis
- Why the difference? OpenGL's evalutors have not been widely used because:
they are difficult to optimize, incomplete support for all vertex attributes, they are
difficult to use with adaptive LOD (tesselation scheme too rigid)
- NV_evaluators fixes these.
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Monday, January 13, 2003