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How can I get large quantities of sphere masks into a material?


I have a simple sphere mask material for ground displacement at a location and I've been trying to create a solution for applying up to 50 of these across a (spherical) mesh at runtime.

The best approach seems to be writing to a texture parameter with a render target and reading pixel values. This guide by xnihil0zer0 shows one such approach but I have not had luck implementing it with sphere masks.

Below is the material for one instance of the sphere mask: alt textalt text

Product Version: UE 4.20
1.png (378.6 kB)
2.png (291.1 kB)
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asked Jan 29 '19 at 01:34 AM in Rendering

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In my situation, I only needed to add one sphere mask at a time, so I am projecting the sphere mask onto a respective plane of the sphere using the below technique applied to local space (see: orthogonal basis & basis transformation in linear algebra)


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answered Jan 30 '19 at 12:50 AM

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