look_spark

A sprite particle drawn as a spark: a hot core along the quad's long axis, tapered at both ends. Pair with stretch so the quad lies along the velocity.

detail is unused by this look's shape but still declared for a uniform property set; energy scales the final colour.

The material @builtin::deprecated.deprecatedParticles.fx.looks.materials.look_spark draws with look = "spark" on an emitter.