Add notes about Ray Portal BSDF quirks #104807

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Brecht Van Lommel merged 3 commits from Alaska/blender-manual:portal-notes into main 2024-06-04 17:06:07 +02:00
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@ -20,7 +20,7 @@ and it is affected by light path max transparent bounces.
second portal at the target location to make rays go in the other direction as well.
Alaska marked this conversation as resolved Outdated

I would add:

Add a second portal at the target location to make rays go in the other direction as well.

I would add: > Add a second portal at the target location to make rays go in the other direction as well.
- Light sampling does not work efficiently through portals. This can lead to increased
Alaska marked this conversation as resolved Outdated

I suggest:

Light sampling does not work efficiently through portals. This can lead to increased noised from lights on the other side of portals. Particularly small lights may be very noisy, or not pass through at all.

I suggest: > Light sampling does not work efficiently through portals. This can lead to increased noised from lights on the other side of portals. Particularly small lights may be very noisy, or not pass through at all.
noised from lights on the other side of portals. Particularly small lights may be very
noise from lights on the other side of portals. Particularly small lights may be very
noisy, or not pass through at all.