Timothy Lochner

Is there a good way to store data per edge in a mesh for read on the GPU, or are you better off just storing that data per triangle, even though it is likely redundantly stored on the triangle that shares the edge?

Vertex fetching with no real index buffer, but instead have a buffer that is the basically wavefront obj style indices. You can end up storing pretty much anything pretty arbitrarily and without duplication.

Could you spell it out a little bit more, like how youd store and retrieve the data (like, the index where edge data lived, how you'd find it)

I've done a similar thing with quad-based anything. Particles and terrain are easy ones. particleId = vertexId / 6; indexInQuad = vertexId % 6; quadIdx = quads[indexInQuad]; //another LUT. Mean you can do terrain rendering with no index or vertices. Just textures.