Topics

1

[Max] Feature Requests / CoronaBumpMtl

« on: 2018-01-30, 11:47:06 »

Since you guys joined forces with Chaos, I guess it should not be too difficult to just 'borrow' the code for vraybumpmtl?
https://docs.chaosgroup.com/display/VRAY3MAX/Bump+Material+%7C+VRayBumpMtl

I find it enormously useful when creating any layered material or just adding some additional bump to an already finished material (think large scale noise or round edges, etc).

On a side note, if this is not going to happen, can you update the scene converter script to automatically discard the bumpmtl and just use the real mat that's 'nested' into it when converting vray scenes? My files are literally full of these vraybumpmtls and I have to manually fish out the converted materials and discard the vraybumpmtls - otherwise the renders are full of red 'unsupported' objects.

2

[Max] Feature Requests / Cloth/Fabric Shader

« on: 2017-05-31, 20:20:53 »

Cloth/Fabric materials are imho most problematic of all, and often are the weakest point in many renders.
The regular ggx/blinn/whatever brdf is not really suitable, it always comes down to some fallof cheat or weird-ass anisotropy to sort-of make it look correct'ish, but comparing to actual scanned materials the result is not at all realistic

I saw this BTF + BRDF approach mentioned on Vray forums and thought to mention it here as well, as Corona seems open to ideas.
Here's an oldish paper http://www.graphics.cornell.edu/pubs/2006/IM06.pdf
and there is also a cloth shader plugin for vray/maya called  https://github.com/vidarn/ThunderLoom
Anyway, I'm not a tech guy and have no idea if there's anything of worth in the links, but damn, I wish for a nice cloth material all the time. I know you guys make things happen :)

Is there any interest in this direction at all? I think a cloth shader would be amazing help for interiors which seem to be bread and butter for most Corona users.