Search found 67 matches
- Sat Apr 04, 2015 1:48 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: My 2015 links
- Replies: 3
- Views: 42494
My 2015 links
Hi, So I released a few things in 2015 that people here might find interesting: Zero-Byte BVH: http://www.codercorner.com/blog/?p=1142 Contact generation for meshes: http://www.codercorner.com/blog/?p=1156 PEEL public release 1.0: http://www.codercorner.com/blog/?p=1169 This should continue later du...
- Thu May 16, 2013 3:33 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180848
Re: Great Physics Engine Comparison (PEEL)
Ok, I found the issue. This line is guilty: body->setActivationState(DISABLE_DEACTIVATION); As written in the posts, I disable sleeping (in all engines) to make sure it does not interfere with benchmarks. Well, if I do that, the setForceUpdateAllAabbs(false) call has no effect anymore. Is there a be...
- Thu May 16, 2013 10:21 am
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180848
Re: Great Physics Engine Comparison (PEEL)
I have showed you this for one test (the 255*255 fixed boxes), but you have been quiet about that. At best you have showed me that you cannot use the Bullet SDK properly I reported in this thread that your suggested fix did not work. People just can't even read - like the guy telling me to try Havo...
- Thu May 16, 2013 8:27 am
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180848
Re: Great Physics Engine Comparison (PEEL)
Ok.... I'm not following. The test you mention is not "cherry picked". Cherry picking would be publishing results for just the sweep tests where PhysX is faster, conveniently ignoring all the other ones. But this is not at all what happened. PhysX was faster in all the raycast or sweep tes...
- Wed May 15, 2013 7:25 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180848
Re: Great Physics Engine Comparison (PEEL)
There was already an open source comparison engine though.... PAL. I'm not sure why my version of it changes anything. Every game developer should already have a similar tool. After all they need to choose one engine or another for their game based on some data, right? In fact, Dirk, I got motivated...
- Wed May 15, 2013 3:41 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180848
Re: Great Physics Engine Comparison (PEEL)
To be clear I did not state that you were purposefully misleading with your results. I was simply pointing out, that as a study or review, your blog post raised all of the red flags for bias (in a systematic review sense). I'm certain as a person with a scientific background you can appreciate this...
- Wed May 15, 2013 9:06 am
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180848
Re: Great Physics Engine Comparison (PEEL)
Do people actually read blog posts? I did try Havok. Five versions of it.Try Havok vs. Physx instead....
- Wed May 15, 2013 9:02 am
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180848
Re: Great Physics Engine Comparison (PEEL)
In fact here's the whole PINT plug-in: http://www.codercorner.com/tmp/PINT_Bullet281.rar
- Wed May 15, 2013 8:53 am
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180848
Re: Great Physics Engine Comparison (PEEL)
So I just tried setForceUpdateAllAabbs(false) but it doesn't actually change anything. Here's the function creating objects, maybe you can spot something wrong: PintObjectHandle Bullet::CreateObject(const PINT_OBJECT_CREATE& desc) { udword NbShapes = desc.GetNbShapes(); if(!NbShapes) return null...
- Wed May 15, 2013 7:59 am
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Great Physics Engine Comparison (PEEL)
- Replies: 29
- Views: 180848
Re: Great Physics Engine Comparison (PEEL)
Hey guys, Looks like what you would expect when someone prepares propaganda for his own commercial baby using their own proprietary closed source test tool and methods. Now that's rich. It's not my baby. There are actually a lot of things I disagree with or don't like in PhysX. If you go this way, m...
- Wed Mar 27, 2013 1:32 pm
- Forum: Links, Papers, Libraries, Demos, Movies, Comparisons
- Topic: Realtime fracture demo using GRB
- Replies: 1
- Views: 41001
- Wed Dec 05, 2012 9:30 pm
- Forum: General Bullet Physics Support and Feedback
- Topic: Bullet compiler options (MSCV2008)
- Replies: 2
- Views: 6759
Bullet compiler options (MSCV2008)
Is there any reason why the default compiler options for Bullet are, let's say, sub-optimal in Release mode? In particular, why not using the /arch::SSE or /arch::SSE2 flag? I got a nice little speed boost by tweaking the compile flags, and it's a bit of a shame that people may not realize the defau...
- Wed Nov 19, 2008 4:54 pm
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Realtime fluids Demo [Project in avance]
- Replies: 7
- Views: 10181
Re: Realtime fluids Demo [Project in avance]
This simple algorithm, model the water surface as an elastic membrane with low stiffness (A. Jeffrey, Applied Partial Differential Equations, Academic Press, ISBN 0-12-382252-1) ...which is exactly the same code everybody's been using for 14 years. It bothers me that people write papers out of this...
- Wed Nov 19, 2008 8:39 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: Realtime fluids Demo [Project in avance]
- Replies: 7
- Views: 10181
Re: Realtime fluids Demo [Project in avance]
I find it funny that people still insist doing those 2D height field fluids exactly in the same way Iguana did it in Heartquake, some 14 (!) years ago.
- Fri Oct 03, 2008 11:01 am
- Forum: Research and development discussion about Collision Detection and Physics Simulation
- Topic: what does "sweep" and "prune" mean ?
- Replies: 5
- Views: 8839
Re: what does "sweep" and "prune" mean ?
I'm french so my understanding of the two terms might be wrong. But to me: - to sweep is to cover the full extent of an object via some process. So in this context it would be going through the sorted list of boxes, one by one. - to prune = to cull. To remove unused stuff. So, in this context, it's ...