Seems as if some (the newest) demos doesn't work on some machines. Glut is neede for some, and newest
drivers from nVidia should do it.. but it may require a GeForce3 or better... Feel free to try, and tell
me how it went...
I coded a version using timeslices.. it's slower but it works on slower computers and/or when the fps
momenterely goes down.
Click here to download the timeslice version of the demo.
I made a Vertex program for the camera-aligned billboarding stuff, but it turned out to be slower
than handling it through the cpu. The GPU can't add vertices, so you still have to put a position
into each particle. I tested both with 1k particles and 15k particles, and the GPU version was
about 5-10% slower. I will look into it further. When I have time. ;]
So.. now I have looked into the slownes issue.. and resolved it. (now it's the same speed).
Plus I have added support for Modifiers. But because of my fps-independent code,
the effect looks different depending on your fps. To solve this I have to integrate over time,
or change to a fixed fps. I think I'll go with option number 2.
Above is a pics and you can download demo #3 here.
Three particle systems. Would look nicer with different textures etc.
15k particles, a lot of overdraw. Wonder if one can make it faster? (probably using bigger particles
but fewer and having nice textures would make a big difference)
You can download particle demo #1 here.
Now I have added camera-aligned billboards. Looks much nicer, but I can't have as many particles.
And, now I use vertex arrays instead of alot of glVertex. Speed has.. increased.
You can download the particle demo #0 here.
Small improvements. Still points but now there is a "shower".
First pic.
Any questions etc.. email them to me.