High-Fidelity Radiosity Rendering at Interactive Rates

摘要

Existing radiosity rendering algorithms achieve interactivity or high fidelity, but not both. Most radiostiy renderess optimize interactivity by converting to a polygonal representation and Gouraud interpolating shading samples, thus sacrificing visual fidelity. A few renderers achieve improved fidelity by performing a per-pixel irradiance "gather" operation, much as in ray-tracing. This approach does nt achieve interactive frame rates on existing hardware.