First image drawn with the Python gpu module may be black #81003

New Issue

Inês Almeida · 2020-09-20T19:19:43+02:00

Inês Almeida commented

2020-09-20 19:19:43 +02:00

System Information
Operating system: Linux-5.4.43-x86_64-Intel-R-_Core-TM-i7-7500U_CPU@_2.70GHz-with-slackware-14.2 64 Bits
Graphics card: Mesa Intel(R) HD Graphics 620 (KBL GT2) Intel 4.6 (Core Profile) Mesa 20.1.0

Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-20 05:59, hash: f470a02afa
Worked: version: 2.90.0 Release, branch: master, commit date: 2020-08-31 11:26, hash: 0330d1af29
Caused by c766d9b9dc

Short description of error
When drawing images with the Python gpu module, the first image rendering command may produce a black image.

Exact steps for others to reproduce the error
See the attached .blend file.
python_gl_draw_image.blend

if line 32 is commented, the error occurs
if line 32 is active (something is drawn beforehand), the error does not occur

Probably related: blender/blender-addons#80730 (BGL deprecation)

**System Information** Operating system: Linux-5.4.43-x86_64-Intel-R-_Core-TM-_i7-7500U_CPU_@_2.70GHz-with-slackware-14.2 64 Bits Graphics card: Mesa Intel(R) HD Graphics 620 (KBL GT2) Intel 4.6 (Core Profile) Mesa 20.1.0 **Blender Version** Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-20 05:59, hash: `f470a02afa` Worked: version: 2.90.0 *Release*, branch: master, commit date: 2020-08-31 11:26, hash: `0330d1af29` Caused by c766d9b9dc **Short description of error** When drawing images with the Python gpu module, the first image rendering command may produce a black image. ![black_froggo.png](https://archive.blender.org/developer/F8903634/black_froggo.png) **Exact steps for others to reproduce the error** See the attached .blend file. [python_gl_draw_image.blend](https://archive.blender.org/developer/F8903627/python_gl_draw_image.blend) - if line 32 is commented, the error occurs - if line 32 is active (something is drawn beforehand), the error does not occur Probably related: blender/blender-addons#80730 (BGL deprecation)

Inês Almeida commented

2020-09-20 19:19:43 +02:00

Added subscriber: @brita

Germano Cavalcante commented

2020-09-24 17:14:19 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-09-24 17:14:19 +02:00

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

Germano Cavalcante commented

2020-09-24 17:14:19 +02:00

I cannot reproduce this with either the latest stable or current development versions of Blender.

However, I had to choose another image, since "Toad Sphere Render.png" had not been packed in the file.

Please try the latest daily build: https://builder.blender.org/download/

Go to File → Defaults → Load Factory Settings and then load your file to see if you still can reproduce this issue.

If the problem persists, please give us more clear instructions on how to reproduce it from scratch.

I cannot reproduce this with either the latest stable or current development versions of Blender. However, I had to choose another image, since "Toad Sphere Render.png" had not been packed in the file. ![image.png](https://archive.blender.org/developer/F8916455/image.png) Please try the latest daily build: https://builder.blender.org/download/ Go to File → Defaults → Load Factory Settings and then load your file to see if you still can reproduce this issue. If the problem persists, please give us more clear instructions on how to reproduce it from scratch.

Inês Almeida commented

2020-10-03 12:11:28 +02:00

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

Inês Almeida commented

2020-10-03 12:11:28 +02:00

I have re-tested it in a build from today and the problem still persists for me.

The problem can be seen by commenting out line 32 of the script in the test file.
The particular image is not important.

I have re-tested it in a build from today and the problem still persists for me. The problem can be seen by commenting out line 32 of the script in the test file. The particular image is not important.

Philipp Oeser commented

2020-10-07 10:54:39 +02:00

Added subscriber: @lichtwerk