| Submitted by , posted on 15 January 2005 |

Image Description, by Here are some shots of my sky system. The clouds are 100% generated and lighted on the GPU. I use 8 octaves Perlin noise, and the lighting is integrated on the GPU using a ray-tracing technique that I described in details in the upcoming Game Programming Gems 5 book available in March 2005. The clouds are fully dynamic, I can control the speed of deformation, the speed and direction of the wind, the density over the entire sky, etc.
Here’s some other shots and videos, all rendered on a GeForce6800:

> - http://www3.sympatico.ca/deks/CloudsShot01.jpg
> - http://www3.sympatico.ca/deks/CloudsShot02.jpg
> - http://www3.sympatico.ca/deks/TestSky01.avi
> - http://www3.sympatico.ca/deks/TestSky02.avi
> - http://www3.sympatico.ca/deks/TestSky03.avi

Thanks!
Jean-François Dubé

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