VDB cache not updated overtime when you use F12 to render. But fine in viewport. (2.83 beta) #76468

New Issue

marco cheng ka chun · 2020-05-06T10:54:53+02:00

2020-05-06 10:54:53 +02:00

System Information
Operating system: Windows-10 Pro 64 Bits
Graphics card: GeForce RTX 2070

Blender Version
Broken: version: 2.83 beta hash: d8133b3eb99a

Short description of error
VDB cache didn't update overtime when using F12 render. But It works fine in viewport preview.

Exact steps for others to reproduce the error

Load VDB cache from any source. (or open existing blender file that has Volume imported).
Render the any frame you like. (the first render always work, you have get the exact result you want).
Move your timeline playhead to another frame, and click render(F12), the whole scene should be updated except the fire (still stay as previous frame). But in viewport, the fire display properly.

PS the file is a bit too big, around 150mb also the cache (from Houdini, 31GB), but I'm sure it's a common problem, let me know if you need the exact file.

Cheers

**System Information** Operating system: Windows-10 Pro 64 Bits Graphics card: GeForce RTX 2070 **Blender Version** Broken: version: 2.83 beta hash: `d8133b3eb99a` **Short description of error** VDB cache didn't update overtime when using F12 render. But It works fine in viewport preview. **Exact steps for others to reproduce the error** 1. Load VDB cache from any source. (or open existing blender file that has Volume imported). 2. Render the any frame you like. (the first render always work, you have get the exact result you want). 3. Move your timeline playhead to another frame, and click render(F12), the whole scene should be updated except the fire (still stay as previous frame). But in viewport, the fire display properly. PS the file is a bit too big, around 150mb also the cache (from Houdini, 31GB), but I'm sure it's a common problem, let me know if you need the exact file. ![image.png](https://archive.blender.org/developer/F8515589/image.png) Cheers

marco cheng ka chun commented

2020-05-06 10:54:53 +02:00

Added subscriber: @MarcoCheng

Philipp Oeser commented

2020-05-06 10:59:13 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-05-06 10:59:13 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Philipp Oeser commented

2020-05-06 10:59:13 +02:00

Would be good to have a (minimal) example .blend file [please make this as small as possible, not 31GB] for others to reproduce, yes.
Thx in advance

Would be good to have a (minimal) example .blend file [please make this as small as possible, not 31GB] for others to reproduce, yes. Thx in advance

marco cheng ka chun commented

2020-05-06 18:31:25 +02:00

Hi! I'm back... Little work before I have time.

I just upload a zip file that contains one blend file and several VDB files. The same sim I did above, but a low res version.

When I create a new file to replicate the bug, I found acritical step that leads to failure. When you first import the volume VDB, it should work fine (even in F12 mode), but then when you play with grid panel, like click into different channels (to visualize different volume), the render start fails and won't update anymore.

Bug_Report.7z

Hi! I'm back... Little work before I have time. I just upload a zip file that contains one blend file and several VDB files. The same sim I did above, but a low res version. When I create a new file to replicate the bug, I found a**critical step** that leads to failure. When you first import the volume VDB, it should work fine (even in F12 mode), but then when you play with grid panel, like click into different channels (to visualize different volume), the render start fails and won't update anymore. ![image.png](https://archive.blender.org/developer/F8516479/image.png) [Bug_Report.7z](https://archive.blender.org/developer/F8516466/Bug_Report.7z)

blender-admin commented

2020-05-07 21:13:14 +02:00

This issue was referenced by 5473f0c49d

This issue was referenced by 5473f0c49dc8e6bd4708ab48bb944b7265c88ace

Brecht Van Lommel commented

2020-05-07 21:14:56 +02:00

Changed status from 'Needs User Info' to: 'Resolved'

Brecht Van Lommel closed this issue

2020-05-07 21:14:56 +02:00

Brecht Van Lommel self-assigned this 2020-05-07 21:14:56 +02:00

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VDB cache not updated overtime when you use F12 to render. But fine in viewport. (2.83 beta) #76468