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Bullet 2.55 SDK released: Ragdoll Demo, SIMD/Vector Math

Posted: Sat Jul 28, 2007 12:56 am
by Erwin Coumans
New Bullet 2.55 Physics SDK is released for download

- Marten Svanfeldt (Starbreeze Studios) created a great Ragdoll Demo that shows the usage of the btConeTwistConstraint.
Download the Windowsexecutable ragdoll demo
Marten also provided numerous improvements and patches for this release, like per-object sleeping thresholds.

- Sony contributed Vector Math and SIMD math library to Bullet, under the new BSD open source license. Bullet will be used as main repository.
See Bullet/Extras/vectormathlibrary and Bullet/Extras/simdmathlibrary

Vector Math has SIMD optimized version for PowerPC (PPU), SPU, SSE (x86) and a generic portable scalar. This will be used to optimized the Bullet Multi Threaded optimized version.

- Updated Bullet User Manual


Posted: Sat Jul 28, 2007 11:24 am
by AshMcConnell
Hi Erwin,

Any noticable speedups with the SIMD? Are there any benchmarks?

Keep up the good work, thanks for an excellent library! :)
All the best,

Posted: Sat Aug 18, 2007 5:22 pm
by Erwin Coumans

The SIMD and Vector Math libraries are just added to Bullet, as open source.

They are not used by the public version of Bullet Physics Library yet, this is work in progress.