| Submitted by , posted on 17 April 2002 |

Image Description, by These images show a little particles system running on an XBox. The particles are time-evolved by the GPU in a vertex shader; that is, the CPU creates particles and then never touches them again. The particles live in memory only once (in the vertex buffer), there is no system memory copy. Particles can be added to this circular buffer by the CPU without stalling the GPU on the XBox.
I get about 30 million particles per second when their size is set to zero, but in practice particle systems are fill-rate limited. As usual, it looks much better in motion, but I'm afraid you need an XBox dev kit to run the demo ;^)

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