GPU Particle System

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Investigate moving particle system to the GPU.

Original issue reported on code.google.com by khang.du...@gmail.com on 15 Apr 2011 at 6:33

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[deleted comment]

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Original comment by erik.kit...@gmail.com on 15 Apr 2011 at 10:18

• Added labels: Affects-Hemi

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Original comment by khang.du...@gmail.com on 16 Apr 2011 at 12:28

• Changed state: Started

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Added new GPU particle system to curve. This initial commit is the result of 
over a week of research and development by both Khang and Erik.

Desired features for GPU particle system:
- ability to do trail effect (ie have the particles start and stop rather than 
just all appearing at once)
- have the particles orient themselves with the tangents of the curve

Original comment by erik.kit...@gmail.com on 22 Apr 2011 at 6:13

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Added trail mode to GPU particle system.

Original comment by erik.kit...@gmail.com on 25 Apr 2011 at 6:48

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Added particle orientation as an option

Original comment by erik.kit...@gmail.com on 28 Apr 2011 at 6:56

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Added color ramp as an option. Also refacotred GPU particle system to support 
phong, lambert, and constant lighting models.

Original comment by erik.kit...@gmail.com on 29 Apr 2011 at 11:50

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Added:
 - tension parameter that allows for some variation in the look of the curves
 - play/pause functionality
 - documentation

Issue is now considered complete.

Original comment by erik.kit...@gmail.com on 3 May 2011 at 9:07

• Changed state: Fixed

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Marking verified to denote this issue was part of 1.3.1 release.

Original comment by erik.kit...@gmail.com on 13 May 2011 at 5:34

• Changed state: Verified