It's not that I need the feature right now or anytime soon, but there's still a problem with the 2D BEAM/ STREAK particles. I cannot seem to force the rendering to be in 2D mode (by setting particle_mode = 2; in the particle_trail.c demo).
"Falls das Resultat nicht einfach nur dermassen gut aussieht, sollten Sie nochmal von vorn anfangen..." - Manual