Efficient Pixel-accurate Rendering of Animated Curved Surfaces

To efficiently animate and render large models consisting of bi-cubic patches in real time, we split the rendering into pose-dependent, view-dependent (Compute-Shader supported) and pure rendering passes. This split avoids recomputation of curved patches from control structures and minimizes overhead due to data transfer – and it integrates nicely with a technique to determine a nearminimal tessellation of the patches while guaranteeing sub-pixel accuracy. Our DX11 implementation generates and accurately renders 141,000 animated bicubic patches of a scene in the movie ‘Elephant’s Dream’ at more than 300 frames per second on a 1440×900 screen using one GTX 580 card.