Tree leaves

[tricky]

I'm never sure where to post things like this. Its not a VRay problem, but a user problem. Anyway...

I'm creating a scene with a lot of trees and foliage. The trees are generated with Onyx and textured with VRay2SidedMtl. On these two trees (the multistem and the main tree), the leaves seem to be exhibiting an annoying bright edge. Any ideas what is causing this? I am using opacity maps for the leaves, and setting filtering of the alpha to None. There is a falloff, blurry reflection on the front side of the leaves.



Any ideas where the problem might be?

Here is the map I am using as the translucency

The back side material is the same as the front, but with a slightly brighter diffuse texture and no reflection.

[jacksc02]

Dumb question-
Does the opacity map fit the leaf?
It looks like a problem with the mapping of the material

[Björn Radler]

You have to change the Filtering in the materials bitmap section to `None´....BOTH for diffuse and for the opacity alpha. This should solve the problem.

Take a look at the attached image

Havent found another workaround yet.


Best regards

Björn

[tricky]

Dumb question-
Does the opacity map fit the leaf?
It looks like a problem with the mapping of the material

Yep. Should be just fine.
Out of interest, with VRay2SidedMtl, is the mapping on the backside of the geometry the same as on the front, or is it mirrored? I'm hoping it is the same...

[tricky]

You have to change the Filtering in the materials bitmap section to `None´....BOTH for diffuse and for the opacity alpha. This should solve the problem.

Take a look at the attached image

Havent found another workaround yet.


Best regards

Björn

Thanks Bjorn. TBH, both examples you give show a horrible outlining effect. Could this be that your alpha is antialiased around the edge? With my textures, I am making sure that the edges of the mask are aliased, i.e. no grey, just pure black and white.

[Björn Radler]

The example maps i used where not of the best quality. but as you see in the screenshot the outline is a lot smaller in case of setting both filterings to NONE.


Best regards

Björn

[tricky]

The example maps i used where not of the best quality. but as you see in the screenshot the outline is a lot smaller in case of setting both filterings to NONE.


Best regards

Björn

I will give this a try. Thankyou.