Sampled and Analytic Rasterization

To compare the speed of our method against a possible GPU implementa- tion of visibility rasterization, we rendered 32 × 32 visibility masks as seen from each of the 2978 vertices

The output of the rasterization pixel shader are depth val- ues only for the visibility pass, and additionally weighted splat attributes, such as normal vectors or color values, in

If an error is tolerable, the calculations can be sped up by using a simple scalar occlusion factor per light source to attenuate radiance, thus decoupling the expensive estimation

Holes in AA Patterns tend to group either in threads or clusters, depending on whether t < 2r or t > 2r, respectively.. The difference is apparent in

The compressed G-buffer requires two or three samples per pixel and it is particularly advantageous at high visibility sampling rates (e.g. 8 samples per pixel or more) where it

A simple example is shown to the right with a single pixel with four (yellow) visibility samples and a sin- gle shading sample point (blue) in the center of the pixel.. The

Since the construction of K φ only requires the evaluation of the basis functions φ i at the sampling lo- cations λ j this provides a practical means to construct the sampling

For a given Many-Lights scene, it only needs a fraction of the to- tal visibility samples to accurately approximate the actual visibility between receivers and lights, resulting