I need to draw a point cloud in the engine with something like 80,000 points. glDrawArrays(GL_POINTS,…) is the obvious choice, but I’m not finding any support for this in the engine. I’m I missing something, or do I need to implement GL_POINT support myself ? Any alternatives I should try ?
I set about abusing the DrawDebugPoint to see what it could manage, pleasantly surprised that it could handle 10k points at 30hz.
I haven’t looked at it, but I bet there’s a way to tell a CustomMeshRenderer to use the points rendering mode. Then you’d just need to give it a vertex buffer. Might be wrong though, because I haven’t actually looked into it. But if I were trying to do this that’s where I’d start.
If it doesn’t already support drawing a custom mesh as points, it should be doable to extend it so that it does.
Did a little more digging. FMeshBatch has a Type field which can be set to PT_Point (along with triangle, triangle list, quad etc). However it looks like CustomMeshComponent will need to be extended to add support for it.