Question about the "vdb" example

Question

Hi, I use Blender 4.3.2. When I opened both the Lesson01 and this Lesson10 files. In "3D Viewport", the embergen_gas did not display anything (blank screen). I set the viewport shading to "render preview" and Render Properties to - Cycle, Supported, GPU Compute. I checked that the vdb file is not missing used "File-ExternalData-ReportMissingFiles". There must be something that I have overlooked. Please help.

Answer 1 · 2025-01-24T07:46:36Z

Martin Bergwerf replied January 24, 2025 7:46am

Hi kchow ,

First, Render Preview always uses EEVEE.

You can go to Rendered Shading and see it with Cycles, or change the Render Engine to EEVEE and go to the Render Properties > Volumes Tab and change the Custom Range, or disable that altogether:

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Answer 2 · 2025-01-24T08:01:14Z

Martin Bergwerf replied January 24, 2025 8:01am

Solution

Also, make sure that you don't get a warning like this:

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Answer 3 · 2025-01-24T13:06:14Z

Omar Domenech replied January 24, 2025 1:06pm

Isn't that the same issue in this thread:

https://cgcookie.com/community/19928-explosions-not-visible

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Answer 4 · 2025-01-25T11:34:05Z

replied January 25, 2025 11:34am

Thank you very much Martin and Omar,

This is it! I got the visual. I have not used vdb before and did not realize there is a "Data" properties and that the vdb file have to be linked correctly there. And the "File - ExternalData- Report Missing Files" did not show any problem!

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