Grass blending with Landscape slope map

Tetranome · Jul 2017

Hey guys.

I want to blend my grass with my terrain, and basically I have a 4k slope map for my Worldmachine generated landscape - I want my grass to be brown near the bottom for the white, sharp & dirty areas, and my grass to have green when it blends with the white, flat grassy areas.

Most of the setup here is correct, however I can't figure out how to get my slope map to not tile on my landscape. I want it to match the landscape exactly, with no tile.

Any ideas? Is it better to use the Landscape-coords node? How would I do that math?

Image: https://us.v-cdn.net/5021068/uploads/editor/5w/ghjyuo33ggf7.jpg

Most details are above! Thanks for looking

leleuxart · Jul 2017

Just plugging in the terrain size for your Landscape Coords should be enough.

You can also do this with math and without a texture. The Kite Demo uses it as a base terrain layer of rock for the slopes and grass/dirt everywhere else.

Tetranome · Jul 2017

Doesn't seem to agree with the landscape node

Image: https://us.v-cdn.net/5021068/uploads/editor/vq/x0paja6hu9w5.jpg

jessnado · Jul 2017

Are you applying the slop map to the material? It should go in your landscape paint target layer I believe. I would make two slope maps, one for your "green" layer, another for your "brown". You could probably do this with your existing slope map pretty easily within world machine or photoshop.

Tetranome · Jul 2017

Sorry dudes I feel like I wasn't concise in expressing my end goal.

Here's an image of what I'm trying to achieve:

Image: https://us.v-cdn.net/5021068/uploads/editor/pt/ek278epdsutz.jpg

My slope mask has been applied to the landscape via my landscape material... and then separately, i want to have my grass meshes change their bottom half's colour depending on where they are placed, so that they blend with the dirt/grass textures defined by the landscape slope map.

Grass Mesh Material Graph:

Image: https://us.v-cdn.net/5021068/uploads/editor/f1/1y02gm8gss1s.jpg

My bad guys & gals, I hope that clears things up.
Thanks again

Tetranome · Jul 2017

leleuxart Perhaps I should check out the Kite demo! Are you referring to this technique?
https://docs.unrealengine.com/latest/INT/Resources/Showcases/Stylized/Landscape/index.html
It would work for the landscape, but I don't think it would for the grass mesh?

IacopoAntonelli · Jul 2017

What about using this?

Image: https://us.v-cdn.net/5021068/uploads/editor/e5/551v8q64hcs4.jpg

I used that for coloring grass depending on terrain color but I can't find the nodes of the material I made.

IacopoAntonelli · Jul 2017

There. Landscape location is self-explaining, landscape size was used in my case due to the world-composition which divided my landscape in different tiles of 505 x 505 meters, the last function is just a tweak.

Image: https://us.v-cdn.net/5021068/uploads/editor/g5/lkuw9pm7kfpi.jpg

Tetranome · Jul 2017

Oh! Where is that GI toggle? And that setup is to go into my grass mesh diffuse?

THX!

IacopoAntonelli · Aug 2017

Hi, you can find it in Edit -> Project Settings -> Rendering.

Yes, use it in the grass material.

maddin · Sep 2017

Where can i find the basecolor texture, which "generate landscape real time gi data" generates?

Grass blending with Landscape slope map

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