2D collision in 3D space

[Evgeni_Popov]

Welcome aboard!

Here’s my answer in another thread regarding the rendering groups:

Is it possible to force meshes to be drawn fully one after another (overlapping instead of clipping?)

You can set BABYLON.RenderingManager.MAX_RENDERINGGROUPS to the number of groups you want. Note that you will incur some performance and/or memory penalty because a RenderingGroup instance is created for each render group. However, you will need to profile your app to see if it’s a bottleneck for you or not.

Aren’t your meshes in 3D space? If yes, the z-buffer usage should handle the correct rendering order of your meshes without a need for rendering groups / doing tricks with the z component? Thay way, you could use the regular collision detection system.