Kai Kostack (kaikostack)
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User Since
Jan 24 2006, 5:03 AM (612 w, 4 d)

Recent Activity

Sep 5 2017

Kai Kostack (kaikostack) added a comment to T52374: Changes of rigid body related settings during simulation will break the simulation (worked in 2.78c).

The issue seems to be solved by this patch. Thanks for taking care of it.

Sep 5 2017, 1:29 PM · BF Blender: Regressions, BF Blender

Sep 4 2017

Kai Kostack (kaikostack) added a comment to T52374: Changes of rigid body related settings during simulation will break the simulation (worked in 2.78c).

Hey @Luca Rood (LucaRood), if there is no further fix to be expected, can you revert the changes leading to this serious issue now for the release please?

Sep 4 2017, 8:40 AM · BF Blender: Regressions, BF Blender

Aug 18 2017

Kai Kostack (kaikostack) created T52434: Setting origin to Center of Mass on zero-volume objects produces wrong results now in 2.79.
Aug 18 2017, 9:38 AM · BF Blender: Regressions, BF Blender

Aug 13 2017

Kai Kostack (kaikostack) updated the task description for T52374: Changes of rigid body related settings during simulation will break the simulation (worked in 2.78c).
Aug 13 2017, 3:05 AM · BF Blender: Regressions, BF Blender
Kai Kostack (kaikostack) created T52374: Changes of rigid body related settings during simulation will break the simulation (worked in 2.78c).
Aug 13 2017, 2:47 AM · BF Blender: Regressions, BF Blender

May 25 2017

Kai Kostack (kaikostack) created T51627: .mdd & .pc2 export leave unfreed mesh data in memory killing Blender on larger animations.
May 25 2017, 7:38 PM · Import/Export, Addons

Apr 11 2017

Kai Kostack (kaikostack) added a comment to T51129: Adaptive displacement case leads to box-shaped culling.

Looks like only the vertex group data got corrupted, when removing the Mask vertex group validate() doesn't complain anymore but the issue persists. Not sure why the adaptive displacement feature wouldn't work with "doubles" in the first place, isn't this a very common thing in 3d modelling? Edge split something and you have doubles everywhere, not sure if this issue is actually resolved by now. But thank you for looking into it anyhow.

Apr 11 2017, 8:39 AM · Cycles, BF Blender

Apr 5 2017

Kai Kostack (kaikostack) created T51129: Adaptive displacement case leads to box-shaped culling.
Apr 5 2017, 8:23 AM · Cycles, BF Blender

Dec 20 2016

Kai Kostack (kaikostack) created T50281: Particles do not respect animated vertex groups.
Dec 20 2016, 6:15 PM

Dec 11 2016

Kai Kostack (kaikostack) created T50230: Rigid body point cache jumps.
Dec 11 2016, 11:29 AM · BF Blender
Kai Kostack (kaikostack) added a comment to T50165: Bmesh booleans fail on simple cube array.

Using Carve actually doesn't fix the issue in Bmesh but thanks anyway. ;)

Dec 11 2016, 10:22 AM · Modifiers, BF Blender

Dec 9 2016

Kai Kostack (kaikostack) added a comment to T50164: Cycles renders artifacts on CPU but not on GPU.

1 subdivision:

Dec 9 2016, 3:05 PM · Cycles, BF Blender

Dec 7 2016

Kai Kostack (kaikostack) updated the task description for T50193: Cycles renders volumetrics very differently on CPU vs. GPU.
Dec 7 2016, 5:07 PM · BF Blender, Cycles
Kai Kostack (kaikostack) updated the task description for T50193: Cycles renders volumetrics very differently on CPU vs. GPU.
Dec 7 2016, 5:06 PM · BF Blender, Cycles
Kai Kostack (kaikostack) updated the task description for T50193: Cycles renders volumetrics very differently on CPU vs. GPU.
Dec 7 2016, 5:06 PM · BF Blender, Cycles
Kai Kostack (kaikostack) created T50193: Cycles renders volumetrics very differently on CPU vs. GPU.
Dec 7 2016, 5:05 PM · BF Blender, Cycles

Dec 4 2016

Kai Kostack (kaikostack) added a comment to T50164: Cycles renders artifacts on CPU but not on GPU.

It can be reproduced with the official 2.78a release and todays buildbot version for Win64.

Dec 4 2016, 4:03 PM · Cycles, BF Blender

Dec 3 2016

Kai Kostack (kaikostack) added a comment to T50165: Bmesh booleans fail on simple cube array.

Then I suggest to change the default method back to Carve until someone will take care of the Bmesh method. In the current state and without active development this is an experimental feature at best.

Dec 3 2016, 2:01 PM · Modifiers, BF Blender
Kai Kostack (kaikostack) created T50165: Bmesh booleans fail on simple cube array.
Dec 3 2016, 11:31 AM · Modifiers, BF Blender
Kai Kostack (kaikostack) created T50164: Cycles renders artifacts on CPU but not on GPU.
Dec 3 2016, 10:32 AM · Cycles, BF Blender

Nov 16 2016

Kai Kostack (kaikostack) added a comment to T50034: Blender changes processor affinity unauthorized.

I couldn't reproduce the compositor issue, so I assume a mistake from my side. It works correctly, don't bother.

Nov 16 2016, 4:09 PM · Platform: Windows, BF Blender

Nov 15 2016

Kai Kostack (kaikostack) added a comment to T50034: Blender changes processor affinity unauthorized.

Appears good to me.

Nov 15 2016, 7:49 PM · Platform: Windows, BF Blender
Kai Kostack (kaikostack) added a comment to T50034: Blender changes processor affinity unauthorized.

An intentional change that ignores previous affinity settings just to overwrite it, is not really better than "Windows stupidness".

Nov 15 2016, 3:47 PM · Platform: Windows, BF Blender
Kai Kostack (kaikostack) created T50034: Blender changes processor affinity unauthorized.
Nov 15 2016, 3:17 PM · Platform: Windows, BF Blender

May 6 2016

Kai Kostack (kaikostack) created T48363: UVs corrupted by micro displacement.
May 6 2016, 11:25 PM · BF Blender

Jul 26 2015

Kai Kostack (kaikostack) added a comment to T42306: Fracture Modifier design feedback from artists and devs.

Looks like it comes down to following requirements and thus considerations for Blender redesign:

Jul 26 2015, 7:38 PM · Modifiers

Jul 21 2015

Kai Kostack (kaikostack) updated subscribers of T42306: Fracture Modifier design feedback from artists and devs.
Jul 21 2015, 11:28 PM · Modifiers

Apr 3 2015

Kai Kostack (kaikostack) added a comment to T44080: Linking empties with rigid body constraints into new scene will result in losing constraint settings.

The unlinking issue can be harmful to your work. Think of one who would like to move a complex simulation rig into a different scene for logistic reasons, everything looks perfect for the user as everything appears to work. Now he deletes the simulation in the original scene and saves his work, unknowingly that he just destroyed his simulation which he considered to be safe in the other scene.

Apr 3 2015, 8:54 PM · BF Blender

Apr 2 2015

Kai Kostack (kaikostack) added a comment to T44080: Linking empties with rigid body constraints into new scene will result in losing constraint settings.

I have to correct the report again. Apparently when linking to the new scene both rigid body and constraint settings will be linked as well. But if you now unlink both from the original scene the settings in the second scene are gone too. I guess they should be copied then?

Apr 2 2015, 11:59 PM · BF Blender

Mar 23 2015

Kai Kostack (kaikostack) added a comment to T44080: Linking empties with rigid body constraints into new scene will result in losing constraint settings.

Let me correct the report then as follows.

Mar 23 2015, 5:38 PM · BF Blender

Mar 21 2015

Kai Kostack (kaikostack) created T44080: Linking empties with rigid body constraints into new scene will result in losing constraint settings.
Mar 21 2015, 6:39 PM · BF Blender

Aug 27 2014

Kai Kostack (kaikostack) added a comment to T40017: Wrong Motion Blur with Rigid Body Simulation / Point Cache.

No specific steps, load the cube_bugtest.blend into Blender and render animation (baking is optional). After the first frame the result should look like one of the wrong examples above.

Aug 27 2014, 8:53 PM · BF Blender, Physics

Aug 20 2014

Kai Kostack (kaikostack) added a comment to T40017: Wrong Motion Blur with Rigid Body Simulation / Point Cache.

Looks like the bug is back. I can confirm that my test blend file doesn't work anymore, too. The cube disappears completely now despite a fully baked simulation.

Aug 20 2014, 8:08 PM · BF Blender, Physics

Jul 19 2014

Kai Kostack (kaikostack) added a comment to T41080: Texture coordinate node's "generated" output doesn't return original undeformed coordinates of the object anymore (as stated in wiki).

Thank you for taking the time to explain, I'm fine with it then.

Jul 19 2014, 3:46 PM · Cycles, BF Blender

Jul 17 2014

Kai Kostack (kaikostack) added a comment to T41080: Texture coordinate node's "generated" output doesn't return original undeformed coordinates of the object anymore (as stated in wiki).

Generated coordinates are about object space and as much as I wouldn't expect global space to be deformed by modifiers I wouldn't for generated coordinates.

Jul 17 2014, 9:20 PM · Cycles, BF Blender

Jul 15 2014

Kai Kostack (kaikostack) reopened T41080: Texture coordinate node's "generated" output doesn't return original undeformed coordinates of the object anymore (as stated in wiki) as "Open".
Jul 15 2014, 12:32 PM · Cycles, BF Blender

Jul 11 2014

Kai Kostack (kaikostack) added a comment to T40957: Particles + force fields lead to crashes in some cases.

A quick own build shows no crashes anymore, will check others when they arrive on graphicall.

Jul 11 2014, 7:28 PM · BF Blender

Jul 9 2014

Kai Kostack (kaikostack) added a comment to T40957: Particles + force fields lead to crashes in some cases.

With -t 1 it doesn't crash. This build and this build are crashing without the parameters.

Jul 9 2014, 10:31 AM · BF Blender
Kai Kostack (kaikostack) added a comment to T40957: Particles + force fields lead to crashes in some cases.

So, I did some deeper testing and can provide some more concrete info now.

Jul 9 2014, 10:19 AM · BF Blender

Jul 7 2014

Kai Kostack (kaikostack) added a comment to T40957: Particles + force fields lead to crashes in some cases.

Rendering in CPU and GPU crashes for me immediately on this file. Before starting the actual rendering process. Viewport rendering also crashes. I didn't test the latter for this file before, but in other files it worked most of the time.

Jul 7 2014, 7:09 PM · BF Blender
Kai Kostack (kaikostack) added a comment to T40957: Particles + force fields lead to crashes in some cases.

I used baking everywhere but it crashed anyway, and this very early not as late as frame 65. On what OS are you working on? I have learned that Linux is much more "unconcerned" when it comes to bad memory access other than Windows, making it even harder to reproduce errors.

Jul 7 2014, 2:22 AM · BF Blender

Jul 5 2014

Kai Kostack (kaikostack) reopened T40957: Particles + force fields lead to crashes in some cases as "Open".
Jul 5 2014, 9:53 AM · BF Blender

May 15 2014

Kai Kostack (kaikostack) added a comment to T40195: Smoke in some cases doesn't update animation state in Cycles after first render..

I found the cause, it's the "persistent images" option which prevents not only images to be reloaded on frame change but also smoke data. Disabling this instantly fixed the problem.

May 15 2014, 1:15 AM · BF Blender, Cycles

May 14 2014

Kai Kostack (kaikostack) reopened T40195: Smoke in some cases doesn't update animation state in Cycles after first render. as "Open".
May 14 2014, 5:10 PM · BF Blender, Cycles

May 9 2014

Kai Kostack (kaikostack) reopened T40115: Smoke simulator memory leak with high poly mesh emitter as "Open".
May 9 2014, 8:33 PM · BF Blender, Physics

May 4 2014

Kai Kostack (kaikostack) added a comment to T40017: Wrong Motion Blur with Rigid Body Simulation / Point Cache.

Tested on Windows. Works in part but the simulation still continues on rerendering and then produces still artifacts.

May 4 2014, 12:52 PM · BF Blender, Physics
Kai Kostack (kaikostack) reopened T40017: Wrong Motion Blur with Rigid Body Simulation / Point Cache as "Open".
May 4 2014, 3:01 AM · BF Blender, Physics

Jan 23 2014

Kai Kostack (kaikostack) added a comment to T38154: Drivers controlled by properties of node trees won't work, data paths are rejected.

Could you at least make the "Copy Data Path" from the right click menu returning the correct path? This would certainly lower the barrier for users to actually use this feature. Thank you nonetheless.

Jan 23 2014, 8:33 PM · Animation, BF Blender

Jan 10 2014

Kai Kostack (kaikostack) added a comment to T38154: Drivers controlled by properties of node trees won't work, data paths are rejected.

Thanks but the driver still doesn't accept this path. It doesn't accept the full path and not 'node_tree.nodes["Mapping.001"].rotation' as sub-path, so how do I resolve the problem?

Jan 10 2014, 9:21 PM · Animation, BF Blender
Kai Kostack (kaikostack) reopened T38154: Drivers controlled by properties of node trees won't work, data paths are rejected as "Open".
Jan 10 2014, 5:10 PM · Animation, BF Blender

Dec 26 2013

Karja Krähwald (karja) awarded T37298: Unexpected behavior caused by the Solidify modifier when using vertex group control a Heartbreak token.
Dec 26 2013, 8:17 PM · Modifiers, BF Blender

Dec 9 2013

Kai Kostack (kaikostack) reopened T37750: Mask modifier + Metaball instancing producing wrong stats in top bar as "Open".
Dec 9 2013, 12:55 PM · BF Blender