Resolved (UNDOCUMENTED) Maximum Particle Capacity

Im pushing the VFX graph pretty hard. Specifically Im trying to show a point cloud with 87,891,214 Positions and Colors

SetColorFromMap, SetPositionFromMap work great and Im setting the positions sequentially. But the point cloud just stops after a certain point ~60m points in. It just cuts off hard stop

I set the capacity to 87,891,214 and then to 100,000,000 and then when the previous didnt work

I tried sampling based on index and using an offset with fewer points so that I could see the 'end' of the data. It worked, and I can see the part that is normally cut off, so the data is there.

It appears that there is a hidden maximum to the capacity in initialize particle that is undocumented and has no other results on google. Can anyone confirm or deny?

 

If capacity caps at 67m, I would guess that it is limited by 8k x 8k buffer, but I don't know much about the internals of VFX graph, so it is just a guess.

 

Thank you for the guess, I bet you're right

Since VFX graph has no documentation on the minute details, this is a good thread to keep bumped for anyone that wants to use this system for enormous particle systems