Incorrect result with new Adaptive light Solver

[Sacifair]

Hello everyone!

I noticed a bug in new version of Corona 4 (hot fix 1) :(

This is a bathroom here, 3 sources of light(IES)+ 2 more of Corona light Mtl (in the mirror) + main light corona Sky
I tried to understand why on my ceiling there is some "squares". And disabling "new adaptive light solver" removes this problem

[rowmanns]

Hi,

Thanks for reporting this to us. Would you be able to provide your scene?

Instructions on how to do this are in my signiture. Please remember to let me know the name of your scene.

Cheers,

Rowan

[Sacifair]

Sorry, I couldn't
This is commercial scene :(

But, I noticed the same issue in exterior scenes

here:

"as you can see unchecking "Adaptive light solver" decides this problem" please fix that

[TomG]

I've only seen something similar when using the new multi-environments - was this function used here? If so, it's a known thing, and the release blog notes that you need to disable the Adaptive solver when using multi-environments (search "Adaptive" on https://corona-renderer.com/blog/corona-renderer-4-for-3ds-max-released/)

[Sacifair]

Nope :(

I don't use this. It's just HDR+CoronaSun (in my post where an interior is CoronaSky+Sun)
Without multi-environments :)

[maru]

@Sacifair we are extremely interested in investigating this and providing a fix. The adaptive light solver should be rock solid.
Could you possibly strip both of your scenes or one of them and upload it? (remove all assets, most objects, textures, etc, and send us just a simple skeleton, where the issue still can be observed)

[Sacifair]

OK, understood!

I got permission from my client and ready to upload the scene with the issue. It's really important cause in latest projects I just disable "adaptive light solver" first.. this is bad, and must be fixed!
Please tell me the way how I should upload them.

[rowmanns]

Hi,

You can upload them to our private uploader which can be found here: https://corona-renderer.com/upload

Please don't forget to let us know the name of the files.

Cheers,

Rowan

[Sacifair]

Done!

Filename - 1566635182_ForCORONAteam.rar


p.c. when I was preparing this scene for you, I noticed that I have two planes as CoronaPortals (one is exactly near the window of the room and another in the different room). Deleting another decided the issue but, not full. Maybe this information will be helpful
:)
but if the problem was only because of the Corona portals, than why I got the same issue in the an exterior scene. Who knows..

I'm waiting your report about it.

Many thanks!

[rowmanns]

Hi,

Thanks for the scene, we can reproduce this behaviour.

I have forwarded this onto our dev team for further investigation.

Thanks,

Rowan

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