Hello everyone, I am completely new to VRay and I am having some difficulty rendering a shot properly. There are a ton of artifacts / splotches on the lamp and a bit on the wall. I’ve checked the normals and all of the objects and they seem to be going outwards just fine. This is for a competition …

Bumping, still stumped by this issue. :frowning:

Typical answer for this kind of thing: Check on - Subpixel mapping & - Clamping (maybe around 4) [image] Chaos: Industry-leading design and visualization software Chaos develops visualization technologies that empower artists & designers to create photorealistic imagery and animation …

Thanks, I’ll try that tonight. :slight_smile:

Just one more thing to always try when you get problems with artefacts. Save another version (you know for testing etc) and apply a simple vray material to all of the models. Then see what’s happening, sometimes artefacts can be materials rather than a specific render setting as such. …

Rendering an extra GI, Lighting and a Reflection RenderElement lets you check where the artifacts come from. Since you can view GI, Direct Light and Reflections seperatly. I notice you have “use lightcache for glossy rays” checked, so it might be a good idea to check “use retrace threshold” and lea…

Hello, I did as Toby suggested, I think the caustics are the problem. On the caustics pass I can see it splotching all around. What’s the best way to fix this? I would like to keep the caustics, as I like the effect they have with some of the materials in the scene (mostly the eyes). Regards, Edu…

As you wrote this is for a competion and you have little time left, I would really suggest to set the caustics aside. The only option to get rid of the caustic-artefacts is tweaking - a lot. They are something you can bother with when you got your GI settings right and have a flicker free animation…

[image] My Firts Post Render As you wrote this is for a competion and you have little time left, I would really suggest to set the caustics aside. The only option to get rid of the caustic-artefacts is tweaking - a lot. They are something you can bother with when you got your GI settings right a…

Don’t forget to post up your results :slight_smile:

Artifacts / Splotches - VRay 2.0 for Maya 2012

V-Ray V-Ray for Maya V-Ray for Maya :: Issues

Emcs07 October 27, 2011, 5:59pm 9

Well I “fixed” (huge render times) the caustics with the max photons setting. I think I’ll follow your Jedi-master advice and leave caustics for another day. Only thing left right now is the images look a bit grainy, but adjusting the Adaptive DMC threshold should fix it.

Regards,

Eduardo

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Artifacts / Splotches - VRay 2.0 for Maya 2012

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