WorldPosition per-pixel doesn't work on a mesh decal
Using World Position as texture coords in mesh decal doesn't appear to work - it just shows up white. It does work in a decal material applied to a deferred decal actor, but not when applied to a mesh.
Repro: Follow the mesh decal steps here: https://docs.unrealengine.com/latest/INT/Engine/Rendering/Materials/HowTo/MeshDecals/ - except use WorldPosition.RG as UV coordinates on whatever texture you're using.
Workaround: It does seem to work per-vertex, so you can throw WorldPosition through a Vertex Interpolator node, and that works fine for most cases.
asked Sep 28 '17 at 11:11 PM in Bug Reports
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