Particle sprites using ICE
Sprites are images or sequences of images which you map onto a surface, usually with an alpha channel, to create the illusion of a three-dimensional object or volume. Typical use of sprites includes populating trees with thousands of leafs or creating fire and smoke effects, as this is much more cost effective than rendering instances of the actual objects or using volume clouds. And in most situations you wouldn’t be able to spot the difference anyway.
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