image.pixels always returns nothing even when an image is loaded #90460

New Issue

michael campbell · 2021-08-05T15:48:46+02:00

michael campbell commented

2021-08-05 15:48:46 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.92

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-07-22 22:44, hash: fafd21b14c
Worked: (newest version of Blender that worked as expected)

Short description of error

open a new blend file
add an image
then in the console enter each line below (pressing enter in between):

pixels = bpy.data.images['image name'].pixels
image.channels
len(pixels)

they all return 0.

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.92 **Blender Version** Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-07-22 22:44, hash: `fafd21b14c` Worked: (newest version of Blender that worked as expected) **Short description of error** open a new blend file add an image then in the console enter each line below (pressing enter in between): ``` pixels = bpy.data.images['image name'].pixels image.channels len(pixels) ``` they all return 0.

michael campbell commented

2021-08-05 15:48:46 +02:00

Added subscriber: @3di

Pratik Borhade commented

2021-08-05 15:54:25 +02:00

Added subscriber: @PratikPB2123

Philipp Oeser commented

2021-08-05 16:02:19 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-08-05 16:02:19 +02:00

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

Philipp Oeser commented

2021-08-05 16:02:19 +02:00

Is the Image loaded into some Editor?
Is image.has_data True or False?

If False, then #73761 (Images appended from disk do not have data) might be worth checking.

Is the Image loaded into some Editor? Is `image.has_data` True or False? If False, then #73761 (Images appended from disk do not have data) might be worth checking.

michael campbell commented

2021-08-05 16:11:48 +02:00

yes it's loaded into an image node in the compositor

michael campbell commented

2021-08-05 16:13:51 +02:00

it's for a caching system I've almost finished. Just working on the bit that auto invalidates the cache if the downstream nodes output has changed.

I'm using the below as a workaround for now, but it's probably a bit slower than reading from the datablock directly:

the_path = file_system_helpers.get_absolute_path(val.filepath)
        with open(the_path,"rb") as f:
            the_bytes = f.read() # read entire file as bytes
            the_hash = hashlib.md5(the_bytes).hexdigest();

it's for a caching system I've almost finished. Just working on the bit that auto invalidates the cache if the downstream nodes output has changed. I'm using the below as a workaround for now, but it's probably a bit slower than reading from the datablock directly: ``` the_path = file_system_helpers.get_absolute_path(val.filepath) with open(the_path,"rb") as f: the_bytes = f.read() # read entire file as bytes the_hash = hashlib.md5(the_bytes).hexdigest();

michael campbell commented

2021-08-05 16:17:19 +02:00

oh yep, image does have data and it has_data returns True also.

Philipp Oeser commented

2021-08-18 15:40:00 +02:00

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

Brecht Van Lommel commented

2021-08-18 16:00:43 +02:00

Closed as duplicate of #53768

Brecht Van Lommel closed this issue

2021-08-18 16:00:43 +02:00

Brecht Van Lommel commented

2021-08-18 16:01:09 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2021-08-18 16:01:09 +02:00

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

Brecht Van Lommel reopened this issue

2021-08-18 16:01:09 +02:00

Brecht Van Lommel commented

2021-08-18 16:01:09 +02:00

Wrong task..

Brecht Van Lommel commented

2021-08-18 16:17:58 +02:00

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

Brecht Van Lommel commented

2021-08-18 16:17:58 +02:00

It's likely this is the same issue still, if the image you are testing with is a multilayer image.

Note this is why we ask for complete information and data to reproduce bugs, if you provided an example image file we'd find this immediately rather than guessing.

It's likely this is the same issue still, if the image you are testing with is a multilayer image. Note this is why we ask for complete information and data to reproduce bugs, if you provided an example image file we'd find this immediately rather than guessing.

Philipp Oeser commented

2021-08-27 09:28:47 +02:00

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

Philipp Oeser closed this issue

2021-08-27 09:28:47 +02:00

Philipp Oeser commented

2021-08-27 09:28:47 +02:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

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image.pixels always returns nothing even when an image is loaded #90460