Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Bug Reporting => [Max] Resolved Bugs => Topic started by: Tom on 2023-09-02, 08:35:27

Title: CPU powers drops
Post by: Tom on 2023-09-02, 08:35:27

Hi,

I have an issue on a very simple scene made of a few walls and a ceiling, timber floor and a coffee table.
It is lit by a Corona Sky environment map. Every objects are assigned a simple plain grey CoronaPhysicalMtl.

When I hit render (production renderer), everything works as expected: the cpu runs at 100%.

But as soon as I apply the 'White Paint' material to an object, the cpu usage drops to around 40%.

If I get of this material and I apply back the grey neutral material, the cpu usage hits 100% again.

The same problem arises if I use the IR.

I can send you the scene if needed (3ds Max 2023.3.3, Corona 10 hotfix 1)


Thanks for the help.

Title: Re: CPU powers drops
Post by: pokoy on 2023-09-02, 10:26:11

Could it be that the material uses the Triplanar map somewhere?

You could be running into the problem with this map recently reported here for v10:
https://forum.corona-renderer.com/index.php?topic=40848.0 (https://forum.corona-renderer.com/index.php?topic=40848.0)

Title: Re: CPU powers drops
Post by: Tom on 2023-09-03, 10:12:45

Thanks for letting me know.

Title: Re: CPU powers drops
Post by: romullus on 2023-09-03, 11:00:59

Duplicate: https://forum.corona-renderer.com/index.php?topic=40848.0

Title: Re: CPU powers drops
Post by: maru on 2023-09-22, 14:30:31

We have just released a new daily build of Corona 11 with a fix for Triplanar map performance issues. You can find it here:
https://forum.corona-renderer.com/index.php?topic=40442.msg217142#msg217142
 
Please test it and share your results with us.