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In 3Delight, screen sampling and surface shading are disconnected. In other renderers, increasing the amount of "AA" samples will also increase the amount of shading samples, not so in 3Delight. This allows for consistant control over rendered quality. |
Pixel Filter
Filter Width
These two parameters select the shape and the size of the screen filter. The available filter types are : gaussian, mitchell, catmull-rom, sinc, box and triangle.
The mitchell, catmull-rom and sinc filter are legacy filters that were suitable in scanline renderers (such as REYES algorithms) in which sharpening was used to artificially compensate for the blur introduced by the lack of shading samples per pixel. In a path-tracer, every camera ray contributes to shading and renders are crisp by default. Using these sharp filters in a context of a path-tracer is thus counter productive. Note that these filters need to have filter widths larger than 4 in order to work as designed.
The box and triangle filtler are provided for completeness.
We recommend to use a gaussian pixel filter with a filter width of 2 as this will produce optimal quality.
Motion Blur
Max Reflection Depth
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