Patches with VrayEdgesTex where surfaces meet

V-Ray V-Ray GPU Issues
1

I have patches forming with VrayEdgesTex where surfaces meet. The CPU engine renders it perfectly fine. This will probably be the last time I use Vray GPU for any production work. I just can’t handle all the bugs anymore, to be brutally honest. I don’t care if it’s 10x faster than CPU when I constantly have to deal with problems like these on a daily basis…

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vray_GPU_edgestex_bug2.jpg
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2

Hi it could be something related to the geometry. Are you using the VRayEdgesTex for chamfering the edge? Could you share a bit more details and also the scene if possible? You can post the scene here or trough the support contact form..

3

Yes, I’m using edgestex to chamfer the edges. I’ve submitted a ticket with number 42649 containing a download link for the scene. I remember reporting this issue with VrayEdgesTex a year ago.

4

Ok @Alex_M I will check your ticket and scene. There is and issue with a similar problem in our system. Let me check the scene and I will get back to you.

5

I just suffered 4 hours to make just a single render… I’m really tired of vray gpu 5 believe just because the 2d displaccement i already wrote in vray gpu for sketchup…

I hate vray gpu!!! So unstable!!!

6

Hi according to my tests with your scene these artefacts are a result of the combination of VRayEdgesTex and poor geometry topology in V-Ray GPU. They are present with or without the “same object only” option.

7

Thanks for reviewing the problem. How can I prevent this? I recreated the model with clean quad geometry and I am still unable to get clean edges (see below). Attached below is also the new geometry if you would like to test it.

vray_GPU_edgestex_bug3.jpg
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vray_GPU_edgestex_bug4.jpg
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new_geo_max2023.7z (278 KB)

8

Fstorm doesn’t seem to have such issues even with the messy triangulated CAD geometry:

vray_GPU_edgestex_bug5.jpg
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9

Hi I tweaked the model a bit and managed to clear out the outer edge. The inner edge started showing the same issue though.

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I will collect all the info and report this for improvement. Thanks for the report.

10

Does the VrayEdgesTex in MAX = Round edges in Maya? (the extra attribute in a Vray material or shape node) The only Vray Edges texture I see in maya renders a wireframe thingo.

11

I’m not a Maya user, but VrayEdgesTex map in Max is used for creating “fake” rounded edges through the Vray material, so I guess yes.

Thanks!

12

Sorry to hear about your troubles @Alex_M , ID for this issue is VGPU-5872 and the old issue is VGPU-5447
I added both to the GPU roadmap, I will make sure both are addressed.

Correct!

13

Thanks, @Muhammed_Hamed . I really appreciate it. Did you see my new posts in this thread? I’m still encountering the lighting bug when using very simple lighting and materials and no include/exclude lists.

14

I’m following the post yes, I will reply as well

15

Hi @Alex_M

This is solved, and will be part of the next Beta build
The older issue should get attention soon as well

16

Thanks for the quick fix, @Muhammed_Hamed ! This has been plaguing my GPU renders for at least a year.