GPU Pro 6

3. Real-Time Deformation of Subdivision Surfaces on Object Collisions 47

(a) (b)

Figure 3.13. Comparison of deformation quality using different tile resolutions per

patch: (a) The higher resolution (128× 128) captures high-frequency detailwhile (b) the

lower (32 × 32) does not.

3.6.2 Influence of Voxelization

The second parameter that influences the overall quality most is the approxima-

tion of the penetrating object shape. The quality of the voxelization is limited

by the chosen voxel grid size. Choosing too low a voxel grid resolution results

in a low-quality deformation as shown in the example in Figure 3.14. In our

implementation, we use a single