Looking for a basic Sobel Edge Post Process Material?

Thanks for sharing, but I can’t see the edges. I’m using Unreal Engine 4.11.2 and followed everything you said on your post, but I can’t see the edges. Do I have to do anything else?

And also, I get three errors in material:

Error [SM5] Missing Material Function
Error [SM5] (Node If) If input B must be of type float.
Error [SM5] (Node SceneTexture) SceneColor lookups are only available when MaterialDomain = Surface. PostProcessMaterials should use the SceneTexture PostProcessInput0.

And when I open the project I get this error also:

Error /Game/Materials/MI_SobelEdge : Can’t find file for asset. /Game/Materials/SobelEdge/M_SobelEdge
Info Failed to load /Game/Materials/SobelEdge/M_SobelEdge.M_SobelEdge Referenced by MI_SobelEdge

Any idea? There are a lot of undefined functions in the material.

By the way, I’m new in Unreal Development.