Grease Pencil Behavior changes Brush when going in and out of Drawing mode #76851

New Issue

Piotr Nikov · 2020-05-18T08:47:47+02:00

Piotr Nikov commented

2020-05-18 08:47:47 +02:00

System Information
Operating system: MacOs 10.15.4
Graphics card: AMD Radeon Pro 5500M 8 GB

Blender Version
Broken: 2.90 5c5a638b57 & 2.83 e5ace51295
Worked: 2.82a and 2.83 8956e9e5f6 (2020-05-11 19:18) - Unable to test other versions to pin point the exact version it broke.

Short description of error
Going in and out of drawing mode (to edit of object for example) changes brush to default Pencil as opposed to last brush used. Which is annoying because you constantly need to change it back when going back to Drawing mode.
Exact steps for others to reproduce the error
. Grease Pencil Drawing mode: Choose Ink Pen (Pencil being the default). Draw a Stroke.
. Go in Edit mode.
. Go back to Draw mode: the Brush is back to Pencil...

**System Information** Operating system: MacOs 10.15.4 Graphics card: AMD Radeon Pro 5500M 8 GB **Blender Version** Broken: 2.90 5c5a638b571a & 2.83 e5ace51295b9 Worked: 2.82a and 2.83 8956e9e5f6 (2020-05-11 19:18) - Unable to test other versions to pin point the exact version it broke. **Short description of error** Going in and out of drawing mode (to edit of object for example) changes brush to default Pencil as opposed to last brush used. Which is annoying because you constantly need to change it back when going back to Drawing mode. **Exact steps for others to reproduce the error** . Grease Pencil Drawing mode: Choose Ink Pen (Pencil being the default). Draw a Stroke. . Go in Edit mode. . Go back to Draw mode: the Brush is back to Pencil...

Piotr Nikov commented

2020-05-18 08:47:47 +02:00

Added subscriber: @Pyer

Alaska commented

2020-05-18 09:55:56 +02:00

Added subscribers: @antoniov, @Alaska

Alaska commented

2020-05-18 09:55:56 +02:00

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

Alaska commented

2020-05-18 09:55:56 +02:00

I've tested a few versions of Blender on Linux and here's what I've found out.
2.82a - No issues. As would be expected if this issue was caused by a recent patch to Blender 2.83/2.90.
2.83 8956e9e5f6 (2020-05-11 19:18) - No issues. This version is a week old. So it may of been in a more recent patch.
2.83 e5ace51295 (2020-05-15 17:29) - Issue is present. As per the report.
2.90 eaf7d36d66 (2020-05-15 19:12) - Issue is present. As to be expected.
2.90 5c5a638b57(2020-05-17 18:22) - Issue is present. As to be expected.

Based on this, we can assume that between the 11th of May and the 15th of May there was a patch (helpful for people bisecting the issue this helps - Sorry, I've had trouble with bisecting bugs. I will leave bisecting to someone else until I figure things out).

If I was to take a guess, e585257063 is the cause for the issue. Not 100% sure as I haven't bisected the version and don't understand the code. @antoniov What's your thoughts about this?

I've tested a few versions of Blender on Linux and here's what I've found out. 2.82a - No issues. As would be expected if this issue was caused by a recent patch to Blender 2.83/2.90. 2.83 `8956e9e5f6` (2020-05-11 19:18) - No issues. This version is a week old. So it may of been in a more recent patch. 2.83 `e5ace51295` (2020-05-15 17:29) - Issue is present. As per the report. 2.90 `eaf7d36d66` (2020-05-15 19:12) - Issue is present. As to be expected. 2.90 `5c5a638b57`(2020-05-17 18:22) - Issue is present. As to be expected. Based on this, we can assume that between the 11th of May and the 15th of May there was a patch (helpful for people bisecting the issue this helps - Sorry, I've had trouble with bisecting bugs. I will leave bisecting to someone else until I figure things out). If I was to take a guess, e585257063 is the cause for the issue. Not 100% sure as I haven't bisected the version and don't understand the code. @antoniov What's your thoughts about this?

Antonio Vazquez was assigned by Dalai Felinto

2020-05-18 12:59:46 +02:00

Antonio Vazquez commented

2020-05-18 16:44:33 +02:00

Yes, the bug is in that commit..I missed check the old brush.