Cycles viewport rendering broken in panorama view #74458

Closed
opened 2020-03-05 09:24:23 +01:00 by Michael Klein · 5 comments

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.50

Blender Version
Broken: version: 2.83 (sub 6), branch: master, commit date: 2020-03-03 18:38, hash: 31aefdeec5
Worked: 2.79b

Short description of error
I've loaded a Blender 2.79b scene into 2.82 and 2.83 and the Cycles preview gives a strange and wrong result.

Additional effects:
Viewports are black. Left vieport will behave normal when switching to fullscreen size.

Exact steps for others to reproduce the error
Load my attached scene

  • into 2.79b and switch to render in the viewport: Correct rendering
  • into 2.83 and switch to render in the viewport: Broken rendering (tiled panorama view with flickering)

200305_Cycles_IPR_Viewport_Panorama_Issue.blend

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.50 **Blender Version** Broken: version: 2.83 (sub 6), branch: master, commit date: 2020-03-03 18:38, hash: `31aefdeec5` Worked: 2.79b **Short description of error** I've loaded a Blender 2.79b scene into 2.82 and 2.83 and the Cycles preview gives a strange and wrong result. Additional effects: Viewports are black. Left vieport will behave normal when switching to fullscreen size. **Exact steps for others to reproduce the error** Load my attached scene - into 2.79b and switch to render in the viewport: Correct rendering - into 2.83 and switch to render in the viewport: Broken rendering (tiled panorama view with flickering) [200305_Cycles_IPR_Viewport_Panorama_Issue.blend](https://archive.blender.org/developer/F8389214/200305_Cycles_IPR_Viewport_Panorama_Issue.blend)
Author

Added subscriber: @Renderbicks

Added subscriber: @Renderbicks
Author

Blender 2.79b
image.png

Blender 2.83
image.png

Blender 2.79b ![image.png](https://archive.blender.org/developer/F8389215/image.png) Blender 2.83 ![image.png](https://archive.blender.org/developer/F8389217/image.png)
Author

The viewport issue is caused by the 3D view feature. I will create a screen from scratch to see what happens. Turning it off brings Blender back to normal.

image.png

The viewport issue is caused by the 3D view feature. I will create a screen from scratch to see what happens. Turning it off brings Blender back to normal. ![image.png](https://archive.blender.org/developer/F8389337/image.png)
Author

It seems to be not a bug. The 3D (anaglyph) feature forces Cycles to render the left and right eye in constant change. What works in realtime in the OGL shader view will not work here. This causes IPR flickering what was misinterpreted as a bug.

It seems to be not a bug. The 3D (anaglyph) feature forces Cycles to render the left and right eye in constant change. What works in realtime in the OGL shader view will not work here. This causes IPR flickering what was misinterpreted as a bug.

Closed as duplicate of #62582

Closed as duplicate of #62582
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Reference: blender/blender#74458
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