Cycles Viewport Render Image shows a gray picture #71706

New Issue

Ilari Männistö · 2019-11-20T17:46:41+01:00

Ilari Männistö commented

2019-11-20 17:46:41 +01:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30

Blender Version
Broken: version: 2.82 (sub 1), branch: master, commit date: 2019-11-19 17:28, hash: 9ca2cbdcea
Worked: (optional)

Rendering straight from the viewport with Cycles will result in a gray picture with object outlines and other overlay elements but not the picture proper. (2.80 and upwards, I tested with 3 different versions, one of which was the official 2.80, one beta of 2.81 and a 2.82 alpha.)

Exact steps for others to reproduce the error
Default scene.
Set viewport shading to Cycles
Press F12. You will see a predictable result. Like this:

Then instead render the scene by using the "Viewport Render Image" option.

The result will be just a grayish image.

I wanted to render a viewport render because of the new option where you can set the Cycles to render the LookDev HDR backgrounds instead of the actual world background. Then these bugs were found :(

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30 **Blender Version** Broken: version: 2.82 (sub 1), branch: master, commit date: 2019-11-19 17:28, hash: `9ca2cbdcea` Worked: (optional) Rendering straight from the viewport with Cycles will result in a gray picture with object outlines and other overlay elements but not the picture proper. (2.80 and upwards, I tested with 3 different versions, one of which was the official 2.80, one beta of 2.81 and a 2.82 alpha.) **Exact steps for others to reproduce the error** Default scene. Set viewport shading to Cycles Press F12. You will see a predictable result. Like this: ![image.png](https://archive.blender.org/developer/F8148393/image.png) Then instead render the scene by using the "Viewport Render Image" option. ![image.png](https://archive.blender.org/developer/F8148397/image.png) The result will be just a grayish image. ![image.png](https://archive.blender.org/developer/F8148403/image.png) I wanted to render a viewport render because of the new option where you can set the Cycles to render the LookDev HDR backgrounds instead of the actual world background. Then these bugs were found :(

Ilari Männistö commented

2019-11-20 17:46:41 +01:00

Added subscriber: @Lattapotta

blender-admin commented

2019-11-20 17:46:41 +01:00

#103375 was marked as duplicate of this issue

blender-admin commented

2019-11-20 17:46:41 +01:00

#72708 was marked as duplicate of this issue

Jeroen Bakker commented

2019-11-21 08:12:18 +01:00

Added subscriber: @Jeroen-Bakker

Jeroen Bakker commented

2019-11-21 08:12:18 +01:00

Wouldn't put this as a bug but as a feature request. The viewport is rendered before cycles finished its first sample. this is a known issue.

Ilari Männistö commented

2019-11-21 16:41:51 +01:00

Ok. :D I had a false memory of using Cycles viewport rendering in 2.79.
How do I proceed? Do I close this or is there a way for me to move this into a more suitable forum? I'm not very familiar with feature requests :(

Ok. :D I had a false memory of using Cycles viewport rendering in 2.79. How do I proceed? Do I close this or is there a way for me to move this into a more suitable forum? I'm not very familiar with feature requests :(

Germano Cavalcante commented

2019-11-22 19:04:37 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2019-11-22 19:04:37 +01:00

Changed status from 'Open' to: 'Archived'

Germano Cavalcante closed this issue

2019-11-22 19:04:37 +01:00

Germano Cavalcante self-assigned this 2019-11-22 19:04:37 +01:00

Germano Cavalcante commented

2019-11-22 19:04:37 +01:00

As @Jeroen-Bakker mentioned, viewport render does not take cycles samples into account.
Closing.

As @Jeroen-Bakker mentioned, viewport render does not take cycles samples into account. Closing.

Germano Cavalcante commented

2019-12-27 20:20:33 +01:00

Added subscriber: @ChristopherAnderssarian

Nancy commented

2020-05-12 18:17:39 +02:00

Added subscriber: @Rote

Nancy commented

2020-05-12 18:17:39 +02:00

This comment was removed by @Rote

*This comment was removed by @Rote*

bertabbink commented

2022-04-08 18:19:47 +02:00

Added subscriber: @Be_rt

bertabbink commented

2022-04-08 18:19:47 +02:00

Hi here the same future request/or mentioning a problem. 'View' > 'Viewport Render Image' does not work within Cycles (shows grey image), though it works fine in Eevee.
What is the best way to move forward with this? More people experience this issue (though I feel this issue is overshadowed with problems people experience related to 'Render' > 'Render Image' F12 mistakes in settings). When this is technical not possible, maybe this functionality 'Viewport Render Image' can be grayed out when in cycles, to prevent confusion.

Hi here the same future request/or mentioning a problem. 'View' > 'Viewport Render Image' does not work within Cycles (shows grey image), though it works fine in Eevee. What is the best way to move forward with this? More people experience this issue (though I feel this issue is overshadowed with problems people experience related to 'Render' > 'Render Image' F12 mistakes in settings). When this is technical not possible, maybe this functionality 'Viewport Render Image' can be grayed out when in cycles, to prevent confusion.

Omar Emara commented

2022-12-21 12:37:24 +01:00

Added subscribers: @Piergiorgio_PG, @OmarEmaraDev, @mod_moder