Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: KiDam1205 on 2017-10-19, 06:44:45

Title: Strange blotches on the floor
Post by: KiDam1205 on 2017-10-19, 06:44:45
Dear community,
i realy don't know where the problem could be...1.7 RC8 but it happened with 1.6 too...
Any ideas would be very helpful
(https://www.imageupload.co.uk/images/2017/10/19/3dkad_blothes_cropped.jpg)
Title: Re: Strange blotches on the floor
Post by: maru on 2017-10-19, 09:49:05
Do you mean those small dark spots visible to the left and right? Or the dark areas under the benches?
Could you mark in the image the thing you believe is incorrect?

Both of those look like intended results of using some texture maps or ambient occlusion.
Title: Re: Strange blotches on the floor
Post by: KiDam1205 on 2017-10-19, 11:15:51
no :)
I mean the strange look at the area where the metal of the benches touches the floor.

The dark spots at the left are from the texture (this is a concrete from corona material library)   
Title: Re: Strange blotches on the floor
Post by: romullus on 2017-10-19, 11:21:39
It's hard to say without knowing how actual materials or scene were constructed. Could be ambient occlusion, or distance map, or overly agressive denoising, or lack of UHD precision, or something else.
Title: Re: Strange blotches on the floor
Post by: Ondra on 2017-10-20, 13:11:22
my guess is at denoising too noisy image - we need more info to solve this
Title: Re: Strange blotches on the floor
Post by: KiDam1205 on 2017-10-20, 17:05:50
even if the noise limit is set to 2.5?
Title: Re: Strange blotches on the floor
Post by: JoeVallard on 2017-10-20, 18:38:16
I had an issue where one wall was producing some really strange results, turns out somehow i had duplicated the wall and it had two walls taking up the same exact space. That's probably not your issue, but worth a look. Just that area in general seems off. The bench legs almost look like they are a glass. Could also try jumping into the render setup and change "Area to Render" to Crop and just render that area.

All the above if you wanna debug it yourself... best bet would be to upload your scene and have them take a peak at it.