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Cycles: volume sampling method can now be set per material/world.

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This gives you "Multiple Importance", "Distance" and "Equiangular" choices.

What multiple importance sampling does is make things more robust to certain
types of noise at the cost of a bit more noise in cases where the individual
strategies are always better.

So if you've got a pretty dense volume that's lit from far away then distance
sampling is usually more efficient. If you've got a light inside or near the
volume then equiangular sampling is better. If you have a combination of both,
then the multiple importance sampling will be better.
This commit is contained in:
Brecht Van Lommel
2014-06-07 18:47:14 +02:00
parent a29807cd63
commit 5fa68133c9
10 changed files with 112 additions and 51 deletions
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intern/cycles/blender/blender_sync.cpp
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@@ -177,7 +177,6 @@ void BlenderSync::sync_integrator()
integrator->transparent_min_bounce = get_int(cscene, "transparent_min_bounces");
integrator->transparent_shadows = get_boolean(cscene, "use_transparent_shadows");
integrator->volume_homogeneous_sampling = RNA_enum_get(&cscene, "volume_homogeneous_sampling");
integrator->volume_max_steps = get_int(cscene, "volume_max_steps");
integrator->volume_step_size = get_float(cscene, "volume_step_size");