While preparing a 3D project to test Luxcore Vs Octane i fall on this strange behaviour of Env light cache feature. in fact when enable it bring to noisier/darker image than without.
No Envcache 71 scs
Envcache 90 scs
Strangely it is the kind of scene where it should shine.
Env light Cache performance
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Please upload a testscene that allows developers to reproduce the problem, and attach some images.
Please upload a testscene that allows developers to reproduce the problem, and attach some images.
Re: Env light Cache performance
Try to do a test without sun, only sky. Sun is not affected by Env. cache.
P.S. I expect the same result but with "interference" from sun noise.
P.S. I expect the same result but with "interference" from sun noise.
Re: Env light Cache performance
There is no sun in fact in this test. it is pure HDRi lighting accross both render.
Re: Env light Cache performance
It is one of that HDR with a very bright single pixel (i.e. sun), you can increase (a lot) the resolution of Env. cache maps (and probably go out of memory at some point) or scale down the HDR, you will surprise how much the noise is reduced.
P.S. I have described the solution to this problem a while ago but it needs still to be implemented.
Re: Env light Cache performance
Thanks for the explanation. Don't understand "" scale down the HDRi""" . My current hdri is 1k should i go to 0.3k or sometjing like that ?
Re: Env light Cache performance
For a test, there should be a large difference. Anyway, to get less noise in that image, the sun+sky combo should be the best one (with PGI and Env. cache).