How to make particles render a smaller sub-image from a subUV sprite sheet?

Hi,

apologies if this is a naive question, but I’m trying to create a particle system whose material indexes a subUV texture(i.e. flipbook). The difference is that each ‘frame’ within my subUV is large, and I want each particle to render a smaller sub-image, by using the particle’s position to select a subpart of each subUV frame. So each particle is a small sample of the subUV. Basically I’m trying to recreate the volumetric textures shown in the Infiltrator demo: YouTube . My question is: how to select a subimage? I’d like to be able to set the dimensions of this completely separately from the dimensions of the subUV.

cheers,

Hey -

The link you posted to Youtube is not working, but I believe I was able to understand what you are looking for. You are wanting to use the Particle MacroUV node in the material plugged into the texture that you want to pan across all of your particles. If that texture happens to be a flipbook, you should be able to plug the MacroUV node into the UV input of the flipbook. In Infiltrator though, the flipbook is played across each sprite individually and then a static tileable cloud texture is panned across that flipbook using the MacroUV node and MacroUV settings in Cascade.

If I happen to have misunderstood you question feel free to repost teh youtube link and I will try to help out further.

Thank You -

Thanks dude! I’ll give that a try :slight_smile: