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Cycles: Viewport playback flickers to black
Closed, ResolvedPublic


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)



Event Timeline

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: T58569)

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.