Compositor in start up file does not show specific passes #94480

New Issue

Alaska · 2021-12-30T02:45:47+01:00

Alaska commented

2021-12-30 02:45:47 +01:00

Blender Version
Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-12-29 23:51, hash: 9d3264b4fd
Worked: Prior to 7e712b2d6a

Short description of error
When loading the startup file, some passes will be missing from the compositor. For example the denoiser.

Here is a video showing off the issue: F12781327

Exact steps for others to reproduce the error
Watch the video above or follow the steps below:

Start up Blender and change the render engine to Cycles.
Go to the Viewlayer Properties tab and enable Denoising Data.
Change one of the areas to the Compositor and tick the Use Nodes box.
Take note of the passes that are available on the Render layer node.
Select from the top of Blender File -> Defaults -> Save Startup File
Close Blender
Open a new instance of Blender 3.1 and notice that the Render Layer node is missing some of the inputs that should be there.

How it looks before you re-open Blender:
{F13081662, size=full}

How it looks afterwards:
{F13081667, size=full}

Example of startup.blend:
startup.blend

**Blender Version** Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-12-29 23:51, hash: `9d3264b4fd` Worked: Prior to 7e712b2d6a **Short description of error** When loading the startup file, some passes will be missing from the compositor. For example the denoiser. Here is a video showing off the issue: [F12781327](https://archive.blender.org/developer/F12781327/Missing_Passes_in_Compositor.mp4) **Exact steps for others to reproduce the error** Watch the video above or follow the steps below: 1. Start up Blender and change the render engine to Cycles. 2. Go to the `Viewlayer Properties` tab and enable Denoising Data. 3. Change one of the areas to the `Compositor` and tick the `Use Nodes` box. 4. Take note of the passes that are available on the `Render layer` node. 5. Select from the top of Blender `File -> Defaults -> Save Startup File` 6. Close Blender 7. Open a new instance of Blender 3.1 and notice that the `Render Layer` node is missing some of the inputs that should be there. How it looks before you re-open Blender: {[F13081662](https://archive.blender.org/developer/F13081662/image.png), size=full} How it looks afterwards: {[F13081667](https://archive.blender.org/developer/F13081667/image.png), size=full} Example of startup.blend: [startup.blend](https://archive.blender.org/developer/F13081657/startup.blend)

Alaska commented

2021-12-30 02:45:47 +01:00

Added subscriber: @Alaska

Alaska commented

2021-12-30 02:46:10 +01:00

Added subscriber: @JacquesLucke

Alaska commented

2021-12-30 02:46:10 +01:00

CC @JacquesLucke as it's caused by 7e712b2d6a

CC @JacquesLucke as it's caused by 7e712b2d6a

Alaska changed title from ~~Compositor in start file does not show specific passes~~ to Compositor in start up file does not show specific passes

2021-12-30 02:46:41 +01:00

Pratik Borhade commented

2021-12-30 03:01:28 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Pratik Borhade commented

2021-12-30 03:01:32 +01:00

Added subscriber: @PratikPB2123

Jacques Lucke commented

2022-01-04 17:16:19 +01:00

The problem is that cycles is registered after the startup file is loaded. The list of passes is stored in the addon in engine.py. So when the Render Layers node is updated on file load, it does not know which passes the node should have.
It seems like this is only a problem with the startup file. I couldn't reproduce it by loading files any other way. Also note that the missing sockets have not been removed, they are just unavailable. That also implies that once the sockets come back, their links are restored.
While this is indeed a bug and regression, I wouldn't classify it as high priority unless more severe issues are found.

The problem is that cycles is registered after the startup file is loaded. The list of passes is stored in the addon in `engine.py`. So when the Render Layers node is updated on file load, it does not know which passes the node should have. It seems like this is only a problem with the startup file. I couldn't reproduce it by loading files any other way. Also note that the missing sockets have not been removed, they are just unavailable. That also implies that once the sockets come back, their links are restored. While this is indeed a bug and regression, I wouldn't classify it as high priority unless more severe issues are found.

Alaska commented

2022-01-05 00:14:13 +01:00

In #94480#1282771, @JacquesLucke wrote:
While this is indeed a bug and regression, I wouldn't classify it as high priority unless more severe issues are found.

Although this isn't a "severe issue" it does cause some inconvenience.
I personally have a complex denoiser setup in the compositor on my startup file. This is so I every project I work on has the complex denoiser without me having to recreate it.
In my startup file I have the render layers node connected to the complex node tree and then outputting it at the end of the compositor.
On many occasions I will start up a project from my startup file then continue working on the project for maybe a few hours before I close Blender. During the time I'm working on the project the first time, the quality of my denoising is compromised, or broken, due to the missing passes until I enable/disable another render pass.

> In #94480#1282771, @JacquesLucke wrote: > While this is indeed a bug and regression, I wouldn't classify it as high priority unless more severe issues are found. Although this isn't a "severe issue" it does cause some inconvenience. I personally have a complex denoiser setup in the compositor on my startup file. This is so I every project I work on has the complex denoiser without me having to recreate it. In my startup file I have the render layers node connected to the complex node tree and then outputting it at the end of the compositor. On many occasions I will start up a project from my startup file then continue working on the project for maybe a few hours before I close Blender. During the time I'm working on the project the first time, the quality of my denoising is compromised, or broken, due to the missing passes until I enable/disable another render pass.

Alaska commented

2022-01-05 21:01:23 +01:00

Sorry, I made the previous comment based on what I remembered about the bug.

Rendering the image does result in the "Render Layers" node being "reloaded" resulting in the compositor providing the correct result.

Sorry, I made the previous comment based on what I remembered about the bug. Rendering the image does result in the "Render Layers" node being "reloaded" resulting in the compositor providing the correct result.

Pratik Borhade commented

2022-01-11 12:27:58 +01:00

It seems like this is only a problem with the startup file. I couldn't reproduce it by loading files any other way

Looks like issue appear on other files also, see: #94812 ("Passes" disappear in "Render Layers" node in compositor)
We could merge this report in #94812 (reproducing steps are comparatively straightforward)

> It seems like this is only a problem with the startup file. I couldn't reproduce it by loading files any other way Looks like issue appear on other files also, see: #94812 ("Passes" disappear in "Render Layers" node in compositor) We could merge this report in `#94812` (reproducing steps are comparatively straightforward)

Dalai Felinto commented

2022-05-16 17:04:26 +02:00

Added subscriber: @dfelinto

Dalai Felinto commented

2022-05-16 17:04:26 +02:00

This is fixed already since it was fixed in #94812

Dalai Felinto commented

2022-05-16 17:04:37 +02:00

Closed as duplicate of #94812

Dalai Felinto closed this issue

2022-05-16 17:04:37 +02:00

Alaska commented

2022-05-16 23:27:42 +02:00

Changed status from 'Duplicate' to: 'Confirmed'

Alaska reopened this issue

2022-05-16 23:27:42 +02:00

Alaska commented

2022-05-16 23:27:42 +02:00

I continue to experience this issue with the system information found below. I will re-open this report.

System Information
Operating system: Linux-5.17.0-1-amd64-x86_64-with-glibc2.33 64 Bits
Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 510.68.02

Blender Version
Broken version: 3.3.0 Alpha, branch: master, commit date: 2022-05-14 17:46, hash: 139a4b6a84

I continue to experience this issue with the system information found below. I will re-open this report. **System Information** Operating system: Linux-5.17.0-1-amd64-x86_64-with-glibc2.33 64 Bits Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 510.68.02 **Blender Version** Broken version: 3.3.0 Alpha, branch: master, commit date: 2022-05-14 17:46, hash: `139a4b6a84`

Dalai Felinto commented

2022-05-17 14:48:49 +02:00

Changed status from 'Confirmed' to: 'Needs User Info'

Dalai Felinto commented

2022-05-17 14:48:49 +02:00

I still cannot reproduce this. @Alaska can you share a .blend?

Dalai Felinto commented

2022-05-17 14:58:44 +02:00

Changed status from 'Needs User Info' to: 'Confirmed'

Dalai Felinto commented

2022-05-17 14:58:44 +02:00

Ah ok, got to reproduce it with denoise. Here is the startup.blend file:

startup.blend

Ah ok, got to reproduce it with denoise. Here is the startup.blend file: [startup.blend](https://archive.blender.org/developer/F13081657/startup.blend)

Dalai Felinto commented

2022-05-19 15:14:21 +02:00

Hi @Alaska why did you remove this detail: "Note: If you change the render engine back to Cycles this "fixes" itself again." ?

Philipp Oeser removed the

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Compositor in start up file does not show specific passes #94480