Aliasing at edges of rectangular lights

V-Ray V-Ray for SketchUp General
1

Using vray 3.40.04 and Sketchup 2017, I am having bad aliasing around the edges of visible bright rectangular lights in the ceiling. I used to deal with this using sub-pixel mapping and clamp output under the color-mapping settings -- but I don’t find those now.

Any thoughts?

Thanks!

Dave

2

Hi Dave,

This is a known issue in V-Ray 3.6 core.
The Adaptive Lights combined with Light Cache are preventing the Subpixel Clamp from working properly.

To resolve it you can go to AssetEditor/Settings/Raytrace/Optimizations and disable Adaptive Lights.

We’ll do our best to fix that and make both the effects work together as expected.

Konstantin

3

Konstantin:

Good to know… but I am using 3.40.04 at the moment. I am holding off on installing 2018 and 3.6 as I’m upgrading to a new machine towards the end of the month.

What about 3.4?

Thanks,

Dave

4

Konstantin:

Never mind… I just realized I hadn’t clicked on the little icon to open the advanced options, where subpixel clamping resides!

Thanks,

Dave

5

Konstantin:

Ok -- so I enabled subpixel clamp at a value of 1 -- it cleared up my jaggies at the lights, but then the whole rest of the image gets really noisy and the denoiser seems to do nothing. Suggestions?

Dave

6

Hello, Dave,

Could you please send your scene (use Extensions > Export >Pack Project) and the rendered image at support@chaosgroup.com so my colleagues can investigate the issue. Make sure to mention in the email you’re using v3.4.

Kind regards,
Peter