Cycles: Viewport playback flickers to black #58506

New Issue

Michael P. · 2018-12-02T12:02:04+01:00

Michael P. commented

2018-12-02 12:02:04 +01:00

System Information
System: Windows 7 64bit
RAM: 4096 MB
renderer: 'GeForce GTX 760/PCIe/SSE2'
vendor: 'NVIDIA Corporation'
version: '4.5.0 NVIDIA 364.72'

Blender Version
Broken: blender-2.80.0-git.0f5b53ba4dc-windows64

Short description of error
Cycles: Viewport playback flickers to black

Exact steps for others to reproduce the error

Open attached blend file
Set the large viewport to render (See arrow in screenshot #1)
Hit the play button
The area flickers to black and back while playing the animation
The volume material is completly black and solid (Screenshot #2)

cycles-viewport-strange-play-back.blend

**System Information** System: Windows 7 64bit RAM: 4096 MB renderer: 'GeForce GTX 760/PCIe/SSE2' vendor: 'NVIDIA Corporation' version: '4.5.0 NVIDIA 364.72' **Blender Version** Broken: blender-2.80.0-git.0f5b53ba4dc-windows64 **Short description of error** Cycles: Viewport playback flickers to black **Exact steps for others to reproduce the error** 1. Open attached blend file 2. Set the large viewport to render (See arrow in screenshot #1) 3. Hit the play button 4. The area flickers to black and back while playing the animation 5. The volume material is completly black and solid (Screenshot #2) ![grafik.png](https://archive.blender.org/developer/F5788341/grafik.png) ![grafik.png](https://archive.blender.org/developer/F5788334/grafik.png) [cycles-viewport-strange-play-back.blend](https://archive.blender.org/developer/F5788379/cycles-viewport-strange-play-back.blend)

Michael P. commented

2018-12-02 12:02:04 +01:00

Added subscriber: @MichaelParucha

Alaska commented

2018-12-03 00:52:11 +01:00

Added subscriber: @Alaska

Alaska commented

2018-12-03 00:52:11 +01:00

The smoke domain appearing black was caused by the fact that you'd plugged the "Principled Volume Shader" into the "Surface" output and not the "Volume" output. (Note: Blender crashes for me when switching the "Principled Volume Shader" to the "Volume" output while viewport rendering is activated on frame 1, I've reported the bug here: #58569)

As for the screen flicking until black, the same issue occurred on my computer when rendered with the CPU (Ryzen 5 2600) with Blender version 925380050d. However, resizing the 3D viewport window/merging it with the other 3D viewport fixed the issue for me.

The smoke domain appearing black was caused by the fact that you'd plugged the "Principled Volume Shader" into the "Surface" output and not the "Volume" output. (*Note: Blender crashes for me when switching the "Principled Volume Shader" to the "Volume" output while viewport rendering is activated on frame 1, I've reported the bug here: #58569*) As for the screen flicking until black, the same issue occurred on my computer when rendered with the CPU (Ryzen 5 2600) with Blender version 925380050d0. However, resizing the 3D viewport window/merging it with the other 3D viewport fixed the issue for me.

Brecht Van Lommel commented

2019-01-04 13:00:38 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-01-04 13:00:38 +01:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2019-01-04 13:00:38 +01:00

Brecht Van Lommel self-assigned this 2019-01-04 13:00:38 +01:00

Brecht Van Lommel commented

2019-01-04 13:00:38 +01:00

Appears to be solved by bdfc10e.

Appears to be solved by bdfc10e.

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Cycles: Viewport playback flickers to black #58506