Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Bug Reporting => Topic started by: XYZ_wanderer on 2019-07-23, 13:04:13

Title: Insane fireflies/speckles blots on surface
Post by: XYZ_wanderer on 2019-07-23, 13:04:13

So i just updated to Corona 4, tried to render some exterior and i got this beyond insanity fireflies/speckles all over clinker and windows. Like i had them before but not such severe...
Any ideas what's causing it ?

Title: Re: Insane fireflies/speckles blots on surface
Post by: maru on 2019-07-23, 17:32:46

Have you tried resetting your render settings? (Render Setup > Scene > Reset settings) There was a similar report recently, and it turned out the user accidentally changed some setting, and resetting to defaults immediately fixed it.
Other than that, this may be caused by using an HDRI as the environment override (reflections). Unfortunately this is currently a limitation of Corona, but we will fix it in the upcoming versions. In such cases the workaround is to restrain from using environment overrides, or to use a low dynamic range image instead of HDRI (e.g. JPG).