Particle-System Tutorials

does anybody know a good tutorial in particel-systems? i have some tutorials but i don’t understand why i have to use billboarding to turn the particels to the camera - should a glLoadIdentity() call do the same?

thank you h.stony


you could search for particle-system documentations
on or or here:
There are also some pictures to describe the problem.
The only way to avoid billboarding on the cpu is
to use point sprites (where supported) or doing
the billboarding in a vertex shader.


Florian Engelhardt

more links:

glLoadIdentity() discards every transformation. You generally don’t want that, because you may want to transform the whole particle system, for example when moving the camera around.

thank you.