Ray Tracing

13 Ray Tracing 1 Whitted-StyleShadow Mapping before we move onTBD Whitted-Style Ray TracingTBD Why Ray Tracing? Rasterization couldn’t handle global effects well Soft shadow Light bounces more than once Ray Tracing is accurate, but is very slow Rasterization: real-time, ray tracing: offline ~10k CPU core hours to render one frame in production. Definition: Light Rays: Light travels in straight lines 直线传播 Light rays do not collide with each other if they cross 不相互影响 Light rays travel from th ...