Image.has_data, does not return consistent value until the image is updated. #86777

New Issue

Andrea · 2021-03-21T00:51:31+01:00

Andrea commented

2021-03-21 00:51:31 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.40

Blender Version
Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: 02948a2cab
Worked: (newest version of Blender that worked as expected)

Short description of error
The image.has_data method does not correctly return the reality of the facts.
As long as the image is not displayed, or updated via python and the image.update () function will always return False.

Exact steps for others to reproduce the error
Open the attached project, run the script (Once at each startup)
Open the system console, notice that after the img.update () function has_data will be True.

To test differently,
Restart project, open the Blender console and check image.has_data, (It will return False)
Now change the "Info" window to "Image Editor" and choose the image we are testing.
Then the image will be updated and consequently img.has_data will be True
has_data test.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.40 **Blender Version** Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: `02948a2cab` Worked: (newest version of Blender that worked as expected) **Short description of error** The image.has_data method does not correctly return the reality of the facts. As long as the image is not displayed, or updated via python and the image.update () function will always return False. **Exact steps for others to reproduce the error** Open the attached project, run the script (Once at each startup) Open the system console, notice that after the img.update () function has_data will be True. To test differently, Restart project, open the Blender console and check image.has_data, (It will return False) Now change the "Info" window to "Image Editor" and choose the image we are testing. Then the image will be updated and consequently img.has_data will be True [has_data test.blend](https://archive.blender.org/developer/F9901659/has_data_test.blend)

Andrea commented

2021-03-21 00:51:31 +01:00

Added subscriber: @Andrew_D-1

Andrea changed title from ~~Image.has_data, does not return consistent Booleans until the image is updated.~~ to Image.has_data, does not return consistent value until the image is updated.

2021-03-21 00:52:34 +01:00

Philipp Oeser commented

2021-03-22 10:52:10 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-03-22 10:52:10 +01:00

Looks like #73761 (Images appended from disk do not have data), no?

Philipp Oeser commented

2021-03-22 13:11:38 +01:00

So, having another look at #73761, this really looks like these are duplicates.

has_data will tell you if the images is loaded/cached into memory, this is not always the case (but to me, this all looks like it is working as intended).
Will merge with #73761, if there are any more issues, feel free to comment in that report.

So, having another look at #73761, this really looks like these are duplicates. `has_data` will tell you if the images is loaded/cached into memory, this is not always the case (but to me, this all looks like it is working as intended). Will merge with #73761, if there are any more issues, feel free to comment in that report.

Philipp Oeser commented

2021-03-22 13:11:42 +01:00

Closed as duplicate of #73761

Philipp Oeser closed this issue

2021-03-22 13:11:42 +01:00

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Image.has_data, does not return consistent value until the image is updated. #86777