Dust like artifacts

[PIXELBOX_SRO]

Hi all,
getting weird artifacts in my WIP scene.
all started happenning when i added a curtain object.
any clue how to get rid of this stuff?
Please help!



Thank you very much
All the best

[PIXELBOX_SRO]

this is crazy, i am even getting this on water surface by the pool where certain objects are reflecting!!! nuts

Vlado please can you help me out with this?

[vraypixel]

Try turnin Subpixel mapping and clamp output on to see if it helps.

[PIXELBOX_SRO]

supbixel smoothes it only out but its still there......dont want to clamp the output though :-/

[vraypixel]

Than try to exclude the curtain from the speculars. I think its a shader based highlight problem!

[PIXELBOX_SRO]

exclude from speculars? how do i do that?
its weird, i ve copied the object, applied grey material, rendered with no artifacts....then i applied my material again and the problem was gone...thes is really weird!

[simmsimaging]

Looks kinda like caustics to me. If it pops up again try turning off GI caustics and see if that gets rid of it.

[MoonDoggie]

This is where rendering with render elements helps a lot. Put a VRayReflection, VRaySpecular, VRayLighting element and re-render. Then you can see exactly where these are coming from.

[PIXELBOX_SRO]

Hi guys,
Colin: thasts a helpful tip
Brett: hmm, appeared before i turned caustics on... Anyway, will try use affect shadows option or set the curtain not to generate caustics... Shame i have tO wait until monday to test this out

[PIXELBOX_SRO]

Hi guys,
Colin: thasts a helpful tip
Brett: hmm, appeared before i turned caustics on... Anyway, will try use affect shadows option or set the curtain not to generate caustics... Shame i have tO wait until monday to test this out