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Hi,
I know there's currently an issue with portals used alongside domelight. I was always convinced that when you use portals, you should not use dome light at all, but recently, somewhere on this forum, I saw some mention that combining portals with domelight should give you environment importance sampling for portal illumination.
My biggest struggle with portal lights is that they alone do not do environment importance sampling, so if you have for example HDRI map with sunlight captured at 12 stops, if you use it with light portals, you will get just a lot of noise instead of correct sun spot illumination.
Now I am in a situation of enclosed space with smaller light entrances which portals would accelerate a lot, but at the same time, I do not want to give up option of using HDRI with captured sunlight to light the space.
Is there currently something I can do?
I know there's currently an issue with portals used alongside domelight. I was always convinced that when you use portals, you should not use dome light at all, but recently, somewhere on this forum, I saw some mention that combining portals with domelight should give you environment importance sampling for portal illumination.
My biggest struggle with portal lights is that they alone do not do environment importance sampling, so if you have for example HDRI map with sunlight captured at 12 stops, if you use it with light portals, you will get just a lot of noise instead of correct sun spot illumination.
Now I am in a situation of enclosed space with smaller light entrances which portals would accelerate a lot, but at the same time, I do not want to give up option of using HDRI with captured sunlight to light the space.
Is there currently something I can do?
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