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Adaptive Sampling group
These controls can help you speed up rendering time. They reduce the number
of light samples taken. The ideal settings for adaptive sampling vary greatly
from scene to scene.
Adaptive sampling initially takes samples from a grid superimposed on the
pixels of the scene. Where there is enough contrast between samples, it
subdivides that region and takes further samples, down to the minimum area
specified by Subdivide Down To. Lighting for areas not directly sampled is
interpolated.
TIP If you use adaptive sampling, try adjusting the Subdivision Contrast value to
obtain the best results.
Adaptive Sampling When on, the radiosity solution uses adaptive sampling.
When off, it does not. Turning off adaptive sampling can increase the detail
of the final rendering, but at a cost of rendering time. Default=off.
Initial Sample Spacing The grid spacing for initial samples of the image. This
is measured in pixels. Default=16x16.
Subdivision Contrast The contrast threshold that determines when a region
should be further subdivided. Increasing this value causes less subdividing to
occur. Reducing this value can cause unnecessary subdivide. Default=5.0.
Subdivide Down To The minimum spacing for a subdivision. Increasing this
value can improve render time at a cost of accuracy. Default=2x2.
Depending on the scene geometry, grids larger than 1x1 might still be
subdivided below this specified threshold.
Show Samples When on, sample locations render as red dots. This shows
where the most sampling has taken place, which can help you choose the
optimal settings for adaptive sampling. Default=off.
Statistics Rollout (Radiosity)
Main toolbar > Render Scene > Render Scene dialog > Choose Default Scanline
Renderer as the active production renderer. > Advanced Lighting panel > Select
Advanced Lighting rollout > Choose Radiosity from the drop-down list. >
Statistics rollout
Rendering menu > Render > Render Scene dialog > Choose Default Scanline
Renderer as the active production renderer. > Advanced Lighting panel > Select
6026 | Chapter 18 Rendering