Rendering tessellated geometry with motion and defocus blur

摘要

A moving or defocused geometry may be stochastically rendered by grouping a plurality of primitives of that geometry in a hierarchical data structure. Visible fragments may be located in that data structure by hierarchically traversing a ray frustum through the structure. A time-dependent ray tracing data structure may be used in some embodiments.

主权项

1. A method comprising:
stochastically rendering a moving or defocused geometry by grouping a plurality of primitives of said geometry in a hierarchical data structure; traversing samples through said structure; performing said rendering and traversing in a rasterization pipeline; locating visible samples in said data structure by hierarchically traversing a frustum through the structure; optimizing per-sample traversal by determining a branch node during frustum traversal, and initiating per-sample traversal at the branch node; forming said data structure of time-dependent bounding boxes; testing the frustum against a hierarchy of time-dependent bounding boxes; and using tessellation order to avoid sorting when building the hierarchical data structure.