Voxel data texture disappears when camera follows path #47303

New Issue

Thomas · 2016-02-02T23:49:12+01:00

Thomas commented

2016-02-02 23:49:12 +01:00

System Information
OS: Linux 64bit
GPU: NVIDIA GTX 970

Blender Version
blender-2.76b-linux-glibc211-x86_64

Short description
When I use an 8 bit raw voxel data texture for the standard cube and let the camera follow a path, the texture appears only when frame 1 is selected. For any other frame, the texture preview is black and rendering yields nothing:buggy_with_voxel_data.blend

Exact steps

Create a new scene
Select cube and add texture of type "Voxel Data", choose File Format "8 bit Raw", select engine.raw dataset, which

 can be obtained from http://www.tc18.org/code_data_set/3D_greyscale/engine.raw.gz, set resolution to "256x256x128"

Set Influence Volume to Density=1, Emission=1
Select Material to Volume, set Density=0
Add Curve Path to scene
Select Camera and Path; Ctrl-P -> follow path

As long as frame 1 is selected, the texture is okay. But if you select any other frame, the texture is black and nothing will be renderedd.

**System Information** OS: Linux 64bit GPU: NVIDIA GTX 970 **Blender Version** blender-2.76b-linux-glibc211-x86_64 **Short description** When I use an 8 bit raw voxel data texture for the standard cube and let the camera follow a path, the texture appears only when frame 1 is selected. For any other frame, the texture preview is black and rendering yields nothing:[buggy_with_voxel_data.blend](https://archive.blender.org/developer/F279659/buggy_with_voxel_data.blend) **Exact steps** 1. Create a new scene 2. Select cube and add texture of type "Voxel Data", choose File Format "8 bit Raw", select engine.raw dataset, which ``` can be obtained from http://www.tc18.org/code_data_set/3D_greyscale/engine.raw.gz, set resolution to "256x256x128" ``` 3. Set Influence Volume to Density=1, Emission=1 4. Select Material to Volume, set Density=0 5. Add Curve Path to scene 6. Select Camera and Path; Ctrl-P -> follow path As long as frame 1 is selected, the texture is okay. But if you select any other frame, the texture is black and nothing will be renderedd.

Thomas commented

2016-02-02 23:49:12 +01:00

Changed status to: 'Open'

Thomas commented

2016-02-02 23:49:12 +01:00

Added subscriber: @tauzero7

blender-admin commented

2016-02-03 07:33:51 +01:00

This issue was referenced by 94d1674ddc

This issue was referenced by 94d1674ddcce3356489c79e58473450d015c8a59

Campbell Barton commented

2016-02-03 07:45:16 +01:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2016-02-03 07:45:16 +01:00

Campbell Barton commented

2016-02-03 07:46:41 +01:00

Added subscriber: @ideasman42

Campbell Barton commented

2016-02-03 07:46:41 +01:00

Note that by default voxels are animated, in this example enable Still Frame Only,

However there was a bug with cache invalidation, fixed in master.

Note that by default voxels are animated, in this example enable **Still Frame Only**, However there was a bug with cache invalidation, fixed in master.

Thomas commented

2016-02-03 11:18:07 +01:00

Thank you very much for your quick response. I am absolutely new to blender and I overlooked the "Still frame number" setting.

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Voxel data texture disappears when camera follows path #47303