How can i exceed the landscapeGrassType : Grass Density limit?

Development World Creation
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1

Hi i begin as an environment artist and I wanna do a really nice enviro for portfolio purpose.
I am capped to 1000 but I want to exceed.
I tried to add another layer of the same grass but it does not spread nice.

So I found a post complaining about this : Landscape Grass Type Max Density limit - #5 by MostHost_LA
And there is this user redletterday86 who found a solution by editing the header file :

"This is UI clamped to 1000 so you can’t manually type in a higher number but it looks like you can adjust the limit in the LandscapeGrassType.h header file.The UPROPERTY to adjust is GrassDensity.

Edit: Just tested it out by altering that header file and it works fine to up the density limit."

So I installed visual studio and I am stuck. I don’t know where to find that header file, I am not use to coding at all but it looks simple when he says it. :sob:

I really want to break that limit, please i beg you help me.

1 Like
2

Create larger Grass mesh clusters for open areas and use the small clump/cluster for detail paint in.

Take your base grass mesh place it in the world on a flat surface. Duplicate, rotate, move etc. Rinse and repeat until you have a nice large clump/cluster. Select all the meshes → Merge. This will create a new static mesh.

3

Ok i’ll try that thank you

4

Thank you i found a size that works very well even on slopes. slope was my fear.

i Encountered a bug on ue5, because i used a new mesh for the grass, i had no animation and RVT was not working.
I solved it by pressing set bounds on my RVT volume so it kinda refreshed it.

5

For performance you should create a few LoD’s. Tweak and test screen size for each until you get a nice balance. You’ll also have to mess around with cull distances too. Painted foliage culls via cluster based on the furthest instance in the cluster.

6

Turns out you can do it by changing the memory value, for example, using artmoney :smiley:

7

You should just use different grass meshes on slopes.
This can be done either by painting them in (which is the artist’s preference), or by an auto material.

@aylumin
Changing the Editor’s memory value sounds like a recipe for disaster. What happens when you close and re-open the project/level and all the grass maps get re-calculated, for instance?

8

Yes, you are right. I was searching for the way to increase foliage brush paint density, which is clamped to 1. This topic is not about it, but still, with ui brush I think this would be fine. And when doing such stuff one definitely should look in to the code.

9

Yes, because the instances are painted and saved into a list/array so the tool does not necessarily rebuild/replace instances, unless you direct it to.