I'm working with Unity 5.x and trying create a shader that creates shadows at the edges of voxels similar to games like Trove and CubeWorld. You can see in this image below from my game (first image) that the shading between voxels is simply not there even with additional light sources. I believe that games like trove (second image) and cube world (third image) use a shader that creates a shadow between two voxels based on whether the two surfaces are meeting on converging right angles. Does anyone know how one would attain this effect in writing a unity shader? Right now I'm using the unity standard shader.
[attachment=29376:shadbetweenboxes.png]
Notice the shadow at the corner of two voxel surfaces, there is always a fading shadow at each voxel on two different planes.
[attachment=29377:shader2.png]
Here you can see two the same effect, there is a shadow at the edge of two different angles as the shadow fades.
[attachment=29378:shader3.png]
