Regression: rescaling Image by python does not update image shown in image editor properly #98573

New Issue

takaaki takeda · 2022-06-03T12:04:57+02:00

takaaki takeda commented

2022-06-03 12:04:57 +02:00

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: GeForce GTX 970/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86

Blender Version
Broken: version: 3.2.0 Release Candidate, branch: master, commit date: 2022-06-02 15:53, hash: 2d9c5f3dcf
Worked: 3.0

NOTE: Notifying the Image Editor was always missing, but the "cropping" is a regression

Short description of error
Rescaling image by python does not update image shown in image editor properly.
For example, when a image "Untitled" with size 1024x1024 is shown in editor,
bpy.data.images['Untitled'].scale(256,256)
makes image size to be 256x256.
Image shown in the editor looks like a image which is "trimmed" to 256x256.
However, if you save that image, the image is "rescaled" image to 256x256.

I uploaded screenshot image here.

A "trimmed" image is shown in image editor.
But a image file saved is 256x256 "rescaled" image.

I noticed that blender 3.0 worked well.
The image in the image editor becomes 256x256 "rescaled" image.
After 3.1, the image in the image editor looks strange after rescaling by python.

Exact steps for others to reproduce the error

Open Image Editor Panel and Python Console
Make a new Image. For example, 1024x1024 Color Grid Image (named "Untitled").
Execute bpy.data.images['Untitled'].scale(256,256) from python console
At this moment, image editor is not refreshed. Move view or do something in image editor to refresh the image.
A image in the editor looks like a trimmed image to 256x256.
Save the image. The saved image is 256x256 rescaled image.
If you change the image property like Color Space or Alpha, the image shown in editor becomes rescaled image.

(So I guess that the data itself is rescaled properly, but the buffer in image editor is strange)

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: GeForce GTX 970/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86 **Blender Version** Broken: version: 3.2.0 Release Candidate, branch: master, commit date: 2022-06-02 15:53, hash: `2d9c5f3dcf` Worked: 3.0 NOTE: Notifying the Image Editor was always missing, but the "cropping" is a regression **Short description of error** Rescaling image by python does not update image shown in image editor properly. For example, when a image "Untitled" with size 1024x1024 is shown in editor, bpy.data.images['Untitled'].scale(256,256) makes image size to be 256x256. Image shown in the editor looks like a image which is "trimmed" to 256x256. However, if you save that image, the image is "rescaled" image to 256x256. I uploaded screenshot image here. ![BugReport_ImageRescale.png](https://archive.blender.org/developer/F13130458/BugReport_ImageRescale.png) A "trimmed" image is shown in image editor. But a image file saved is 256x256 "rescaled" image. I noticed that blender 3.0 worked well. The image in the image editor becomes 256x256 "rescaled" image. After 3.1, the image in the image editor looks strange after rescaling by python. **Exact steps for others to reproduce the error** 1. Open Image Editor Panel and Python Console 2. Make a new Image. For example, 1024x1024 Color Grid Image (named "Untitled"). 3. Execute bpy.data.images['Untitled'].scale(256,256) from python console 4. At this moment, image editor is not refreshed. Move view or do something in image editor to refresh the image. 5. A image in the editor looks like a trimmed image to 256x256. 6. Save the image. The saved image is 256x256 rescaled image. 7. If you change the image property like Color Space or Alpha, the image shown in editor becomes rescaled image. (So I guess that the data itself is rescaled properly, but the buffer in image editor is strange)

takaaki takeda commented

2022-06-03 12:04:57 +02:00

Added subscriber: @popqjp

Philipp Oeser commented

2022-06-03 12:20:32 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2022-06-03 12:20:32 +02:00

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

Philipp Oeser commented

2022-06-03 12:20:32 +02:00

Can confirm, will check

Philipp Oeser self-assigned this 2022-06-03 12:38:57 +02:00

blender-admin commented

2022-06-03 12:50:13 +02:00

This issue was referenced by cf6c8ae01b

This issue was referenced by cf6c8ae01b66a6260604e35c9c2d63bb06805e4f

Philipp Oeser commented

2022-06-03 12:53:15 +02:00

Notifying the Image Editor was always missing, but the "cropping" is a regression, so will mark as High priority.

Philipp Oeser changed title from ~~Rescaling Image by python does not update image shown in image editor properly~~ to Regression: rescaling Image by python does not update image shown in image editor properly

2022-06-03 12:53:54 +02:00

Iliya Katushenock commented

2022-06-03 12:55:21 +02:00

Added subscriber: @mod_moder

Iliya Katushenock commented

2022-06-03 12:55:21 +02:00

2022-06-03 13-53-57.mp4
I checked this issue and also noticed that image resizing might not show up properly on the texture.

[2022-06-03 13-53-57.mp4](https://archive.blender.org/developer/F13130502/2022-06-03_13-53-57.mp4) I checked this issue and also noticed that image resizing might not show up properly on the texture.

Philipp Oeser commented

2022-06-03 14:10:54 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Philipp Oeser closed this issue

2022-06-03 14:10:54 +02:00

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Regression: rescaling Image by python does not update image shown in image editor properly #98573