Question Is it possible to get the normal of the vertex of the terrain in the shader?

I'm interested in the age-old question about stretching the texture on the tops of the terrain, which have a big difference, that is, on steep descents and ascents.

Of course, the simplest way is a triplanar, but although it is easy to add it (for example, to a shader graph), it has big drawbacks, for example, there are a lot of stripes at the junctions.

so I want to use the right textures on the right surfaces, if I'm not mistaken, if you know the normal of the vertex, you can understand what kind of stretch it has, that is, what kind of slope, in accordance with this, you can apply the desired texture.

I know how to get the vertex itself, I was told - the world position and then only the Y height is cut off by the mask. but is it possible to get normal?

to thus understand what slope.
Or what is the best way to calculate how much the texture should stretch for normal display?

I'm already doing the calculations for texture selection in the custom node, so I just need to get the normal right.

 

you should be able to get the normal just by passing it in the vert stage of the shader

 

The normal is usually passed along with the other data to the fragment shader, as it's needed for shading.