verve.gl — points & sprites

Camera-facing billboard quads (variant_billboard, wire tag 42): a ~2000-point additive drifting cloud (round soft points, CPU upward sim) plus one textured disc sprite (sizeAttenuation off, alpha blend). Toggle Attenuation switches particle size between world-units and screen-constant; Toggle Additive swaps the cloud's blend mode between additive and normal alpha-over. Freeze pins the orbit camera so you can inspect the cloud — the particle sim keeps running. Renders through WebGPU when available, else WebGL2.