Grassy area - scatter test

[voltron7]

I've been doing some tests to see about using scattered proxies for my grass in archvis instead of displacement and or vrayfur. Sorry about the bland scene, but just would like to hear if it looks passable as grass?

Straight from VFB, no Vray DOF...


Same, but with Vray DOF...


Same, with Vray DOF, no frame stamp, and some minor post for lighting...


All grass is using vrayscatter plugin with modeled blades turned to vrayproxy. At rendering time, scene has 183,950,520 polys. I used 5 scatter objects each generating between 1800 and 15,000 copies of a 36" square path of proxy blades...

[Morbid Angel]

well it looks much better then displaced grass imo. But why limit yourself with straight up pointing grass as if it was displaced? you can do all kinds of things with it now

[voltron7]

Thanks Morbid, and you're right, I could make the blades more curved for next time for long, wild fields. (This was originally going to be short, manicured grass; when the blades are only 2" max, there is little to no bending... )

Here are my blades from this scene

[Morbid Angel]

whats the render times like?

[voltron7]

whats the render times like?

Morbid, render times are in the frame stamp.
Image output size was 1200x675
BF/LC, VRSun&Sky, physcam

[Morbid Angel]

right...how about put some fast sss2 on that grass?

[voltron7]

right...how about put some fast sss2 on that grass?

Okay, I'll try it out! It will be first time trying that sss2.
Now, it's a Vray2sided material...

[voltron7]

closer

Closer to see blades...working on a sss2 test

Render time was 22 min, 17 sec @1200x675

[skogskalle]

looking good!

How much memory did vray use rendering this?

btw, for your grass-strands (no thickness) I think vray 2-sided mat is the best choice.

[raistlin]

very interesting rendering ! I just want to know if you "scatter" ich baldes or iof you do a square, circle of multiple blades to scatter ?

[Neilg]

The tips of the blades picking up the pinky orange is a bit weird to me - think it may be a bit too glossy (I assume you have reflections turned off?)

It is fantastic grass though. As you would hope for 180~ million polys.

[tricky]

Yes, its looking good. I'd like to know what each proxy looks like - are we talking 1 blade of grass in a proxy (doubt it!) ore 100 or 1000? How do they tile together? Are they square patches of grass?

[PIXELBOX_SRO]

love it really will have to give it a try ))

[voltron7]

@ skogsalle, @1200x675,
LC peaked at 1099.2M
BF peaked at under 1200M

@ raistlin, I scattered many blades over a 3 foot square area and collapsed it to poly and exported as vrayproxy. I'll probably try some more irregular shapes in future attempts.

@ cubiclegangster, yes, maybe a bit much, I have reflection and environment overrides using the vraysky in the vray: environment rollout. In the 2sided mat, trace reflections is "off."

@ tricky, I'll make a wire of the proxy soon

Here is a feeble attempt with the sss2 material. BTW, I have no idea how to use that material!! Only the near short grass has the sss2 material applied to it.


Here is the material if anyone wants to try improving it.

[voltron7]

proxies

view of proxies