Displacement vs proxies: best option for grass in vray?

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  01 January 2013
hi guys sorry for delay, i was busy....

yes it has 1mil instances * number of poly (dont know how many)

Rich my friend whats up, if u want we can update/improve shaders for leafs just let me know

cheers

p.s. i have some spear time atm

Originally Posted by Richard7666: Been following this thread over at Ronen Bekerman's forums, http://www.ronenbekerman.com/forums...foliage-10.html

My current tree quality level leaves a bit to be desired. It still has that 'Pixar' cartoony feel to it.


Last edited by bazuka : 01 January 2013 at 08:11 PM.
 
  01 January 2013
Very generous offer Bazuka! This test scene is one Onyx tree and a couple from Evermotion so unfortunately I can't share it for testing in its present state :(
I'll see what I can come up with though. Unless you yourself have a royalty-free tree model anywhere?

If I can source a good royalty-free model (or if anyone has any feel free to upload) I'll upload it for anyone to play around with and compare notes.
The tree model itself is important, as using leaves with slight curvature (like you can output from Onyx) is important for realistic specular roll-off, as leaves are never flat.

Here's a raw render saved straight from the VFB. Sun+Sky at an afternoon angle default CIE Clear, Vray Physical cam default settings,


Above, but with very quick post work in Photoshop:



and the colour mapping (all diffuse textures have Vray texture input gamma 2.2 attribute applied. I have left reflection, translucency etc textures alone)


Last edited by Richard7666 : 01 January 2013 at 03:58 AM.
 
  01 January 2013
Getting somewhere:



Still using the same linear workflow. Tiny bit of colour correction and fake chromatic aberration added in Photoshop.
Grass is just Vray fur with based on a plane with a texture. Can share the settings if anyone wants. Need to have another go at using instanced proxy geometry.
 
  01 January 2013
looks good but your grass seems to be angled a little oddly since it's using the base face normal
 
  01 January 2013
@Richard7666 I would love to see what kind of settings you are using.
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  01 January 2013
Originally Posted by cgbeige: looks good but your grass seems to be angled a little oddly since it's using the base face normal


On the hill you mean? Good point, I assume there is a way to have Vray fur follow the 'world y'? Or changing the normals on the geometry itself; I'll dig out the Maya help files on how to do that.
 
  01 January 2013
amigo render looks good, so far all u need is few more tweaks and should be perfect

cheers
 
  01 January 2013
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