Flexible Adaptive Tesselation of Subdivision Surfaces

Subdivision surfaces are a popular representation for the freeform shape in geometric modeling. While the subdivision process rapidly converges to a smooth shape, computing and rendering all the vertices is too expensive in the sense of the memory consumption and run time, and also superfluous. Our work was inspired by a demand for a rendering of dynamic scenes and an interactive rendering of the animated character model with reduced memory consumption and no dynamic allocations. The subdivision surface is rendered with no modifications of the control mesh, while allowing flexible tesselation on all subdivision levels as well as feature support (sharp edges and boundaries and vertex editing) for each level. CR Descriptors: I.3.3 [Computer Graphics]: Picture/image generation Display algorithms; I.3.6 [Computer Graphics]: Methodology and Techniques.