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Question by GetColor · Feb 06, 2020 at 01:24 AM · shader

Shader Graph: Changing color/intersection

I'm fairly new to shaders, and normally I can get by with just tinkering until I get an effect I want, but have been stumped.

I have a ground plane and want to make a shader/material on a sphere that, when the sphere intersects with the ground, it will change the color of the ground at the intersection. As in, when the sphere touches the plane, there's a colored circle on the plane (not just an outline of the intersection). I've made a basic intersection/depth shader ala Brackeys tutorial on the subject, but only gives the outline of the intersection. On top of that, my game has a topdown/slightly angled camera, and that seems to mess with the effect quite a bit.

alt text

On the left is the effect I can do with depth stuff, on the right is the effect I want to achieve. (I faked it with a circle sprite)

Any help is greatly appreciated! Thanks!

shadergraph-help.jpg (49.3 kB)
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avatar image akresna360 · Sep 17, 2020 at 08:41 AM 0
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You might find this interesting: https://forum.unity.com/threads/possible-to-make-shader-that-renders-at-intersections-with-another-mesh.93430/

avatar image akresna360 · Sep 21, 2020 at 10:01 PM 0
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Have you found out how? I'm really interested of doing this

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Answer by JukeBoxDelta · May 19, 2020 at 06:16 PM

I'm trying to do this exact same thing. Did you ever figure it out?

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