Rigid body simulation behaves wildly on OSX #38746

New Issue

jesus lamas · 2014-02-21T22:41:30+01:00

jesus lamas commented

2014-02-21 22:41:30 +01:00

System Information
Mac os X 64-bit , NVIDIA GeForce 320M 256 MB

Blender Version
Broken: Blender 2.69.11/ which is the 2.70 test build.

Short description of error
Well there is something wrong with the rigid body simulator. When I add a object and make it active and add a plane which is passive. The object does drop to the plane as it should but once the active object touches the passive plane it starts to slide and move around. Physics are not properly simulated.

Exact steps for others to reproduce the error
I uploaded a video of a screen recording to show the problem/bug on my youtube page.
http://youtu.be/SjN8_sZcngM

**System Information** Mac os X 64-bit , NVIDIA GeForce 320M 256 MB **Blender Version** Broken: Blender 2.69.11/ which is the 2.70 test build. **Short description of error** Well there is something wrong with the rigid body simulator. When I add a object and make it active and add a plane which is passive. The object does drop to the plane as it should but once the active object touches the passive plane it starts to slide and move around. Physics are not properly simulated. **Exact steps for others to reproduce the error** I uploaded a video of a screen recording to show the problem/bug on my youtube page. http://youtu.be/SjN8_sZcngM

jesus lamas commented

2014-02-21 22:41:30 +01:00

Changed status to: 'Open'

jesus lamas self-assigned this 2014-02-21 22:41:30 +01:00

jesus lamas commented

2014-02-21 22:41:30 +01:00

Added subscriber: @jesus650rwc

blender-admin commented

2014-02-21 22:41:30 +01:00

#38940 was marked as duplicate of this issue

Campbell Barton changed title from ~~Blender 2.70 Test build bug.~~ to Blender 2.70 Test build (rigid body simulator bug)

2014-02-22 03:47:52 +01:00

jesus lamas was unassigned by Bastien Montagne

2014-02-22 15:22:16 +01:00

Sergej Reich was assigned by Bastien Montagne

2014-02-22 15:22:16 +01:00

Bastien Montagne commented

2014-02-22 15:22:16 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2014-02-22 15:22:16 +01:00

Cannot confirm that with latest trunk… Could you please upload a sample file with that issue?

Sergej, assigning to you nevertheless. ;)

Cannot confirm that with latest trunk… Could you please upload a sample file with that issue? Sergej, assigning to you nevertheless. ;)

Brecht Van Lommel changed title from ~~Blender 2.70 Test build (rigid body simulator bug)~~ to Rigid body simulator bug

2014-02-22 16:52:38 +01:00

jesus lamas commented

2014-02-22 17:59:48 +01:00

Sample.blend Sample as in .blend? If so, here is a sample.

[Sample.blend](https://archive.blender.org/developer/F78508/Sample.blend) Sample as in .blend? If so, here is a sample.

Sergej Reich commented

2014-02-22 20:26:59 +01:00

Can't reproduce here on arch linux 64 bit.
Would be good if someone could try to reproduce this on a mac.

Can't reproduce here on arch linux 64 bit. Would be good if someone could try to reproduce this on a mac.

Rob Waite commented

2014-02-22 20:45:12 +01:00

Added subscriber: @RJW

Rob Waite commented

2014-02-22 20:45:12 +01:00

Confirmed on an iMac running OSX 10.9.1

Works OK for me in official 2.69.0 r60991 and recent buildbot build 2.69 #2175302.

Confirmed on an iMac running OSX 10.9.1 Works OK for me in official 2.69.0 r60991 and recent buildbot build 2.69 #2175302.

jesus lamas commented

2014-02-22 21:31:19 +01:00

Did you test in Blender 2.70 test build that blender.org released?

Rob Waite commented

2014-02-22 23:53:34 +01:00

@jesus650rwc Yes, the official Blender 2.70 test build from blender.org exhibits the issue on OSX 10.9.1. The earlier builds I mentioned are OK.

Sergej Reich commented

2014-02-23 16:25:48 +01:00

@jesus650rwc @RJW
Could you test the latest buildbot and see whether the problem still exists?

@jesus650rwc @RJW Could you test the latest buildbot and see whether the problem still exists?

Rob Waite commented

2014-02-23 17:24:10 +01:00

Blender 2.69 #cb1b6b5 from buildbot works fine for me.

jesus lamas commented

2014-02-24 05:27:47 +01:00

Is that build the same build that was just released from blender? (Blender2.70)

Rob Waite commented

2014-02-24 06:34:16 +01:00

@jesus650rwc It's a different build. As requested by Sergej, I tested the latest buildbot build (http://builder.blender.org/download/) which, as I reported above, works fine on OSX 10.9.1.

In summary, official release has the bug, buildbot is OK.

@jesus650rwc It's a different build. As requested by Sergej, I tested the latest buildbot build (http://builder.blender.org/download/) which, as I reported above, works fine on OSX 10.9.1. In summary, official release has the bug, buildbot is OK.

Sergej Reich commented

2014-03-04 11:30:22 +01:00

Added subscriber: @particl3s

Sergej Reich commented

2014-03-04 11:30:22 +01:00

◀ Merged tasks: #38940.

Sergej Reich changed title from ~~Rigid body simulator bug~~ to Rigid body simulation behaves wildly on OSX

2014-03-04 11:32:45 +01:00

Sergej Reich commented

2014-03-04 11:38:06 +01:00

Since the problem isn't present in the buildbot builds the bug is either fixed or it's a problem with the way the testbuild was made on OSX.
Please Test the release candidate when it comes out to make sure it's not the latter.

Since the problem isn't present in the buildbot builds the bug is either fixed or it's a problem with the way the testbuild was made on OSX. Please Test the release candidate when it comes out to make sure it's not the latter.

Rob Waite commented

2014-03-06 02:05:57 +01:00

Added subscriber: @sreich

Rob Waite commented

2014-03-06 02:05:57 +01:00

@sreich

I just noticed the RC is available...

I've tested Blender 2.70 RC #19f7f9a (2014-03-05 18:37) and it has the wild behaviour.
The latest buildbot 2.69 #905dda (2014-03-05 08:00) is OK.

OSX 10.9.2.

Hope this helps.

@sreich I just noticed the RC is available... - I've tested Blender 2.70 RC #19f7f9a (2014-03-05 18:37) and it has the wild behaviour. - The latest buildbot 2.69 #905dda (2014-03-05 08:00) is OK. OSX 10.9.2. Hope this helps.

jesus lamas commented

2014-03-06 06:57:38 +01:00

Is there a way to fix this?

Sergej Reich commented

2014-03-10 13:38:43 +01:00

Added subscriber: @jensverwiebe

Sergej Reich commented

2014-03-10 13:39:22 +01:00

@jensverwiebe: I think you should take a look at this.

jens verwiebe commented

2014-03-10 15:54:01 +01:00

I confirm this issue.
The reason is my recent change to clang-omp-3.4.
Oddly it only happens in 64bit build.

We have several options:

compile bullet with apple clang for now ( has no openMP, do we even use it here ? )
fix it really. I get lot of warnings with clang 3.4 about initialization order.

...

Investigating what the real issue is atm.

Jens

I confirm this issue. The reason is my recent change to clang-omp-3.4. Oddly it only happens in 64bit build. We have several options: - compile bullet with apple clang for now ( has no openMP, do we even use it here ? ) - fix it really. I get lot of warnings with clang 3.4 about initialization order. ... Investigating what the real issue is atm. Jens

jens verwiebe commented

2014-03-10 18:16:36 +01:00

So i made a tentavive fix for release 2.70 now, by just using clang 3.3 for bullet2.

This bullet issue should be investigated further:

issue is limited to clang 3.4 64bit atm., 32bit build works normal
my guess is it is something in the friction handling

Jens

So i made a tentavive fix for release 2.70 now, by just using clang 3.3 for bullet2. This bullet issue should be investigated further: - issue is limited to clang 3.4 64bit atm., 32bit build works normal - my guess is it is something in the friction handling Jens

jens verwiebe commented

2014-03-10 22:14:20 +01:00

Bang .. i just updated to Xcode 5.1 which is based on clang 3.4 too -> issue is back ( workaround was using the still @ 3.3 clang from former xcode )
So we need Erwin now

Jens

Bang .. i just updated to Xcode 5.1 which is based on clang 3.4 too -> issue is back ( workaround was using the still @ 3.3 clang from former xcode ) So we need Erwin now Jens

blender-admin commented

2014-03-11 13:27:06 +01:00

This issue was referenced by blender/blender-addons-contrib@558fa43ffd

This issue was referenced by blender/blender-addons-contrib@558fa43ffd5bb1c4950855bd07450841664e89aa

blender-admin commented

2014-03-11 13:27:06 +01:00

This issue was referenced by 558fa43ffd

This issue was referenced by 558fa43ffd5bb1c4950855bd07450841664e89aa

jens verwiebe commented

2014-03-11 13:27:35 +01:00

Changed status from 'Open' to: 'Resolved'

jens verwiebe closed this issue

2014-03-11 13:27:35 +01:00

jens verwiebe commented

2014-03-11 13:27:35 +01:00

Closed by commit 558fa43ffd.

Closed by commit 558fa43ffd.

jens verwiebe commented

2014-03-11 16:28:04 +01:00

Changed status from 'Resolved' to: 'Open'

jens verwiebe reopened this issue

2014-03-11 16:28:04 +01:00

jens verwiebe commented

2014-03-11 16:28:04 +01:00

I wanna have this bug reopened due in fact i made fixes a bit working around the problem.
Although compiling is fixed, i would like to see comments from bullet2 ppl when
they start to use clang > 3.3 too.

The problem is solved atm by not using all release flags for compiling c-api and
just throw the full optimization on cpp code. We could live with that, but i wanna
know why this is in 64bit only and if it is perhaps stricter compiler or something else.

Due rare time atm., i postpone this for after 2.70 Priority is not high.

Jens

I wanna have this bug reopened due in fact i made fixes a bit working around the problem. Although compiling is fixed, i would like to see comments from bullet2 ppl when they start to use clang > 3.3 too. The problem is solved atm by not using all release flags for compiling c-api and just throw the full optimization on cpp code. We could live with that, but i wanna know why this is in 64bit only and if it is perhaps stricter compiler or something else. Due rare time atm., i postpone this for after 2.70 Priority is not high. Jens

jens verwiebe commented

2014-05-12 16:43:52 +02:00

Changed status from 'Open' to: 'Resolved'

jens verwiebe closed this issue

2014-05-12 16:43:52 +02:00

jens verwiebe commented

2014-05-12 16:43:52 +02:00

Closed by commit blender/blender-addons-contrib@558fa43ffd.

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