We’re running into some cases where the repopulation is failing. As we reduce the fill radius, we get more particles, but at a certain point the the render ‘breaks’ and we get all pixels as zeros in rgba. We know the render worked however because we can see the particles in the z-depth pass.
It seems quite sudden too, there seems to be a threshold where it either works fine or it fails.
We’re inputting float32  for position and float32  for density for around 50K particles and we’re fine with a fill radius that makes 150M points but 200M fails.
I’ll try saving out a PRT so we can debug the density values. Forgot we could do that until just now.
EDIT: The repopulated particles all have normal looking positions, but the densities are all 0.0.