Its been a while since I touched BabylonJS but I used to use the SPS and make it that when I clicked a particle it changes color(using its face id).
But now it seems like it always return face id -1? I don’t know why.
It also show this in the console for some reason:
Does it has anything to do with the problem? Maybe I should use a previews version of BabylonJS.
I use these links: