VrayTriplanarTex not working with Refractive / 2Sided Shaders

[Moriah]

I have this shader with several textures and triplanars (+ a curvature) connected to a composite node that's connected to the diffuse. Everything works fine. As soon as i try to add refractions it completely ignores the diffuse component and all the triplanartex... Same happens with a 2sidedMtl...

Shader looks like this



Is it a known issue? If not i can send a scene.

[vlado]

If you can attach a scene, it will be very helpful, yes.

Best regards,
Vlado

[Moriah]

Ok i will send.

Also, displacement doesn't work either with Triplanar.....

[vlado]

Also, displacement doesn't work either with Triplanar.....

Works fine for me (in 3D displacement mode)... so a scene for this would be helpful too.

Best regards,
Vlado

[Moriah]

Sorry for the late response. Displacement actually works fine, but the refractive shader still has the same problem.

Sent the scene to you.

Max 2015, Vray 3.35.01 nightly

[matanov]

It's not from the triplanar tex, but it's definitely something that we should look at.

The most simple way to reproduce your issue is if you load your alembic and assign a material with refraction and translucency (no texture for the diffuse, a simple color will do the trick) and render without GI.

[Moriah]

So it's an alembic issue with vray? What would you advice as a temporary turnaround right now? Render with GI and low multipliers?

[vlado]

What happens if you load it through a VRayProxy?

Best regards,
Vlado

[matanov]

The issue still persist when the particular alembic is loaded through VRayProxy ... but then I exported it to a mesh and everything came clear - all normals are flipped.

[Moriah]

I can confirm, normals are coming flipped, therefore the shading issue. This came from houdini, but everything's ok there... Not sure why it's importing the normals flipped both via alembic or proxy, we'll check around here what's going on. Anyway, glad it isn't an issue with what i initially referred. Just running a normals modifier in every alembic and it solves the issue.