Complex Surfaces
Low bandwidth input, high quality output
- Curved surfaces
- Control points define position and curvature
- Small amount of data holds a lot of information
- Curved surface is tessellated into triangles
- Direct rasterization of curved surface is not practical
- Amount of tessellation matched to processing power of graphics system
- More tessellation gives better quality
- Low input bandwidth, high processing load
- Output of tessellation is a huge number of triangles
- Removes upper bound on vertex processing rate
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