Chaos Corona for 3ds Max > [Max] Tutorials & Guides
Vegetation shader
STHA:
Both methods
1. ) Your method is Front/Back Map
2. ) Corona Materials method provided by Corona.
https://corona-renderer.com/stuff/helpdesk/leaves/config.jpg
https://coronarenderer.freshdesk.com/support/solutions/articles/5000515643-how-to-create-realistic-leaf-or-grass-material-
I meant your method is similar to the vray2sided mtl. Maybe its the same thing. This is what I recall using before I migrated to Corona then ended up using the basic corona method shown in 2.
I just wanted to know whether there is a drastic difference between these two methods or rather is the difference that noticable. Perhaps it might be according to the light or distance from camera.
Ofcourse its up to user preference. but if your method is superior then Corona mtl should be updated so we use the best method. :)
okay I re-read your comment. You wanted a better variation or realism showing two different tonal ranges of the leaf. Got it.
Thanks
Juraj:
OK ;- ).
1) Vray 2Sided Material was just Vray's translucency. You didn't have to populate the second slot with anything. If you didn't, it was exactly the same as Corona's translucency.
2) My setup is absolutely identical to one linked from Corona's help. I also use single translucency map and value. This simulates what happens "inside" the leaf and the color inside is the same.
3) I added different Diffuse and Glossiness maps to back and front part of leaf. It has nothing to do with translucency. Leaves look different from front side and back side. Nothing to do with translucency or color variation among leaves.
Here is photography: Front part is darker, more saturated and glossier/shinier.
4) Outside of this, it's possible to do lot more advanced stuff like using CoronaMultiMaterial to randomize any parameter (Diffuse, Translucency, Gloss, etc..) to make each leaf look different (younger, older,...).
5) It's possible to go even more advanced than that by using Vertex Color Gradient generated by Tree pograms (like SpeedTree or GrowFX), that you will multiply on top of (Diffuse, Translucency or Gloss) to make sure than brighter younger leaves are on end of trees, and older are inside.
But the basic setup is always the same and there are no different methods. Just one.
shortcirkuit:
hey Juraj - love referring back to this post so thanks for your efforts.
Can i ask another question though, how did you balance the outdoor to indoor exposure, what that done in post?
Juraj:
--- Quote from: shortcirkuit on 2021-11-18, 04:31:59 ---hey Juraj - love referring back to this post so thanks for your efforts.
Can i ask another question though, how did you balance the outdoor to indoor exposure, what that done in post?
--- End quote ---
If you're asking about the renderings on 1st page, IPES House, there was no balancing, brightening inside in post or anything. Because this is effectively "open" house, it's not really even interior. It's easy to work with these kind of house :- ).
In Apartment building? Way too many tricks possible. Mike Kelly seems to have new photography tutorial on architecture, I would check that out, it's pretty damn useful.
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