Question Grass taking the color underneath it

I'm currently working on a grass shader and i'm wondering how to make the grass get the color underneath it. So if the ground is grey the grass will turn grey if its on top of it? I cant find much online about it except this video

 

Still need help on this

 

You can do this by grabbing the basemap generated for the terrain (or rendering out the albedo of the terrain yourself to a texture) and sampling that in the shader.

 

How would I go about grabbing the basemap generated for the terrain?, by terrain does this only work with unity terrain system or can any model of terrain work with this method? And what nodes would I use to sample it into the shader graph?

 

You'd have to do it via C# script (with mat.GetTexture("_MainTex")) and pass it to your material as a texture. There might be an api on terrainData for it in newer unity version, not sure. For non-unity terrains you'd have to generate this texture yourself.

 

Did you found a solution? I am not a programmer and i am trying to achieve the same functionality.