Opt-in R-32 particle program. Same matrix setters as ParticleProgram, plus map / soft-depth uniforms.
map
Soft-particle depth. When bound is false, fade is the view-Z fallback documented on ParticleEmitterOptions.softness.
bound
ParticleEmitterOptions.softness
Optional
true samples map (unit 0) like an unlit sprite.
true
Static
Opt-in R-32 particle program. Same matrix setters as ParticleProgram, plus
map/ soft-depth uniforms.