Artifacts in VrayEnvironmentFog

V-Ray for 3ds Max V-Ray for 3ds Max :: Issues
1

Hello,

I’m rendering an interior with 3dsmax 2016 SP4 and V-ray 3.50.03. I want to use Environmentfog to get some volumetric sunlight, so I made an all black Vray material and put that in the MtlOverride slot so I can add the volumetric light in post.

Lighting is done with an HDRI inside a Domelight. Mostly default settings. On the image there are black artifacts visible. Is this a known bug? Or am I doing something wrong? They show up in both progressive and bucket mode. I’m not rendering distributed. LC/BF, with everything set to defaults except the dyn. memory setting (set to 0).

7788-halenvfogproblem.jpg
7788-halenvfogproblem.jpg1000×1414 164 KB

2

Hi,

Try without Adaptive lights.

3

Before that though, try updating to 3.50.04 and see if it helps.

Another solution is to assign a VRayColor texture to the “fog color” slot of the VRayEnvironmentFog (it will also render cleaner).

Best regards,
Vlado

5

Increase the step size to make it faster.

In any case there will be a fix for this soon.

Best regards,
Vlado

6

Out of curiosity more than anything, why is this the case?

7

Thank you for your time guys! Would like to report back that turning to Full lights evaluation fixed the issue. Inserting a VrayColour map in the fog colour slot did not do anything. I will try to see if updating to 3.50.04 will fix it later on.

8

It changes the way the fog is sampled when there is a texture map.

Best regards,
Vlado

9

Ok then. Just FYI, the issue is actually in the environment fog and I hope to have a fix for it soon.

Best regards,
Vlado

11

Ok, good to know - thanks for the feedback!

Best regards,
Vlado