Comments for Coder Corner http://www.codercorner.com/blog Home of Pierre Terdiman Tue, 21 May 2013 15:05:16 +0000 http://wordpress.org/?v=2.6 Comment on The evolution of PhysX - Index by Thomas Young http://www.codercorner.com/blog/?p=914#comment-38726 Thomas Young Fri, 17 May 2013 07:44:38 +0000 http://www.codercorner.com/blog/?p=914#comment-38726 To be really fair you should wait to compare PhysX 3.3 with Bullet 3.3, apples and oranges otherwise. ;) To be really fair you should wait to compare PhysX 3.3 with Bullet 3.3, apples and oranges otherwise. ;)

]]> Comment on The evolution of PhysX (12/12) - Final test and conclusion by Erwin Coumans http://www.codercorner.com/blog/?p=864#comment-38541 Erwin Coumans Tue, 14 May 2013 20:55:55 +0000 http://www.codercorner.com/blog/?p=864#comment-38541 Hi Pierre, I double checked the 34ms Bullet issue for 255*255 static boxes. It is not really bug, but a feature :) Can you make the following call to Bullet after initializing the world? world->setForceUpdateAllAabbs(false); Also make sure to add the static boxes using world->addRigidBody. That way, the collision filter group & mask == 0, so no pairs are added. That should solve the performance issue. I agree that the default settings are not optimal, and it is too easy to shoot yourself in the foot with Bullet. Thanks for sharing the tests. There might be some easy things to improve the Bullet performance a bit, I'm offering some free consultancy if you send me the test by email :) Hi Pierre,

I double checked the 34ms Bullet issue for 255*255 static boxes.
It is not really bug, but a feature :)

Can you make the following call to Bullet after initializing the world?

world->setForceUpdateAllAabbs(false);

Also make sure to add the static boxes using world->addRigidBody. That way, the collision filter group & mask == 0, so no pairs are added.

That should solve the performance issue. I agree that the default settings are not optimal, and it is too easy to shoot yourself in the foot with Bullet.

Thanks for sharing the tests. There might be some easy things to improve the Bullet performance a bit, I’m offering some free consultancy if you send me the test by email :)

]]> Comment on The evolution of PhysX - Index by Erwin Coumans http://www.codercorner.com/blog/?p=914#comment-38522 Erwin Coumans Tue, 14 May 2013 15:29:15 +0000 http://www.codercorner.com/blog/?p=914#comment-38522 Wait for Bullet 3.x, there will be a multi-threaded CPU version too :) http://www.youtube.com/v/ZkF4yMmP0R8 Wait for Bullet 3.x, there will be a multi-threaded CPU version too :)

http://www.youtube.com/v/ZkF4yMmP0R8

]]> Comment on The evolution of PhysX (12/12) - Final test and conclusion by Erwin Coumans http://www.codercorner.com/blog/?p=864#comment-38521 Erwin Coumans Tue, 14 May 2013 15:27:08 +0000 http://www.codercorner.com/blog/?p=864#comment-38521 Wait for Bullet 3.x, there will be a multi-threaded CPU version too :) http://www.youtube.com/v/ZkF4yMmP0R8 Wait for Bullet 3.x, there will be a multi-threaded CPU version too :)

http://www.youtube.com/v/ZkF4yMmP0R8

]]> Comment on The evolution of PhysX - Index by Yarmin http://www.codercorner.com/blog/?p=914#comment-38487 Yarmin Tue, 14 May 2013 09:55:18 +0000 http://www.codercorner.com/blog/?p=914#comment-38487 Bullet...RIP. Bullet…RIP.

]]> Comment on The evolution of PhysX - Addendum by Zogrim http://www.codercorner.com/blog/?p=917#comment-38438 Zogrim Mon, 13 May 2013 19:29:37 +0000 http://www.codercorner.com/blog/?p=917#comment-38438 Nice and forthright :) Nice and forthright :)

]]> Comment on The evolution of PhysX (12/12) - Final test and conclusion by vr http://www.codercorner.com/blog/?p=864#comment-38388 vr Mon, 13 May 2013 07:08:10 +0000 http://www.codercorner.com/blog/?p=864#comment-38388 Great work. Two questions: Will you release the PEEL code? Sounds like a marvelous tool for comparing physics engines. Curious, will you do any quality tests? Energy conservation, constraint errors (residuals) etc.? Great work. Two questions:

Will you release the PEEL code? Sounds like a marvelous tool for comparing physics engines.

Curious, will you do any quality tests? Energy conservation, constraint errors (residuals) etc.?

]]> Comment on The evolution of PhysX (12/12) - Final test and conclusion by el0j http://www.codercorner.com/blog/?p=864#comment-38384 el0j Mon, 13 May 2013 06:23:59 +0000 http://www.codercorner.com/blog/?p=864#comment-38384 I'm probably just blind, but is PEEL available for download somewhere? I’m probably just blind, but is PEEL available for download somewhere?

]]> Comment on The evolution of PhysX (1/12) - PEEL by fb http://www.codercorner.com/blog/?p=748#comment-38370 fb Mon, 13 May 2013 00:31:26 +0000 http://www.codercorner.com/blog/?p=748#comment-38370 Hi Pierre, Where is the download of PEEL? best regards. Hi Pierre,

Where is the download of PEEL?

best regards.

]]> Comment on The evolution of PhysX (12/12) - Final test and conclusion by mareknr http://www.codercorner.com/blog/?p=864#comment-38345 mareknr Sun, 12 May 2013 14:59:50 +0000 http://www.codercorner.com/blog/?p=864#comment-38345 Hi. Thanks for interesting test. I have out of topic question and hope you give me some hint here. I would like to know if you can recommend me a good book which covers a topic of game physics. For the best a good PhysX book. I already ordered one for CUDA and PhysX is the next topic which I want to try to learn something interesting (from programming site). It can be advanced book. Thanks for answer. Hi. Thanks for interesting test. I have out of topic question and hope you give me some hint here. I would like to know if you can recommend me a good book which covers a topic of game physics. For the best a good PhysX book. I already ordered one for CUDA and PhysX is the next topic which I want to try to learn something interesting (from programming site). It can be advanced book. Thanks for answer.

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