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Author Topic: Glowing on Grass Edge  (Read 572 times)

iCreateLtd

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Glowing on Grass Edge
« on: August 26, 2015, 11:33:58 AM »
Hi all.

We have a strange problem.  The grass seems to add a glow around the edges. 

Turning the grass off fixes it.  The grass has just been changed to another type and that also seems to have fixed it.  So, it seems to be a specific type of grass.  Do you know what could cause this?

Thanks,

Sean

Michal Karmazín

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Re: Glowing on Grass Edge
« Reply #1 on: August 26, 2015, 11:50:32 AM »
Hi Sean,

Are you using the Edge Boundary Checking mode? It might be related.

As mentioned in this "Some key notes about Areas->Boundary Checking->Edge mode" post: "In the case of very high density scatters (like dense grass), many overlapping objects could be generated and V-Ray may exceed its default transparency limit (which can cause render artifacts)". You can find there how to fix it (use lower Density values / increase VRay's Max transp. levels).

Hope that helps.

Best regards,

iCreateLtd

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Re: Glowing on Grass Edge
« Reply #2 on: September 01, 2015, 10:34:17 AM »
Hi. 

Thanks for the reply.  Yes, edge mode was being used.  However, I didn't have time to test the tips in your reply because the person working on the scene changed the grass type, which seemed to fix the issue.

I can still see the issue a bit so we'll give it a go when we need to. 

Thanks again.