where can i get realistic grass like this video, i know that is for ue4 but i want it to look like that and be as good as that, i cant find anything anywhere that is this good. can anyone help me out?
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They are kind enough to explain enough about what they do for the possibility of creating something with the same/similar features. However it would likely take days for a person to recreate it really well!
However what I would be concerned with is performance, as they only show grass really, and not a complete game running at the same time.
It looks like they use a quad for each little clump of grass, they don’t follow the camera, and they are rotated to they are angled up(so when you look down there are no holes in the grass.). I can produce (with my knowledge) everything up to the cool wind effects. The default terrain system wont do the wind correctly with anything but normal 2d grass.
They tell us that the wind effects are simply a sinus curve.
My guess is this:
Depending on where in world space you are, calculate a sinus value.
Now depending on how high up on the grass you are, move that vertex an amount in the wind direction based on the sinus curve.
What I see as harder would be getting then to nicely shadow with a max 4k shadow map resolution…
(2 cascades makes it 4kx2k, 4 cascades becomes once again a 4kx4k texture…!)
This stuff gets slow and expensive real fast so probably better to focus on actual gameplay / use unity’s terrain for now. The guy that did rtp also did a grass shader if you want to check that out.
you can modify the terrain grass easily shader to get almost the same looks for the grass, and i said almost because there’s no built in transmission/subsurface scattering in unity yet and it kinda overkill tho using transmission for grass…
Release it on the Asset Store, and I will buy it right away!