GP Fill Tool not working on Mac with Metal GPU Backend #109363
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Reference: blender/blender#109363
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System Information
Operating system: macOS-13.4-x86_64-i386-64bit 64 Bits
Graphics card: AMD Radeon Pro 5500M OpenGL Engine ATI Technologies Inc. 4.1 ATI-4.12.7
Blender Version
Broken: version: 3.5.1, branch: blender-v3.5-release, commit date: 2023-04-24 18:11, hash:
e1ccd9d4a1d3Worked: (newest version of Blender that worked as expected)
Short description of error
When my GPU Backend is set to Metal, the Fill Tool in Grease Pencil is not working. It either doesn't fill, or fills randomly (and yes, my shapes are closed). If I switch my GPU Backend to OpenGL, the Fill Tool works as expected (although I have to click twice)
Exact steps for others to reproduce the error
With the Metal Backend turned on in Preferences...
In this file there is a case where the Fill tool works with OpenGL but not with Metal: fill_metal_bug.blend
Hi, this should be fixed already, see: #107766
Please download and verify in 3.6-beta: https://builder.blender.org/download/daily/
No, it's not completely fixed. I downloaded the stable 3.6 just now and it's only filling about half the shapes. The bug is definitely still there, and even when the Fill Tool works, I have to click twice to get it to fill the shape. Also, the OpenGL bug with the Draw Tool is still there, too.
@CreateAniMissions Hi, could you check the daily build from the link above? Stable version will need some time till the next release where all fixes were in. Thanks!
No, it's still the same using the version at the link you gave me. I am using the Intel version, btw, not the Apple Silicon. In the attached file you can see which areas filled and which areas didn't. No rhyme or reason I can see. And the Draw Tool issue with the OpenGL Backend is still working incorrectly (strokes not visible when drawing).
Thanks. Could you update reproducing steps in report description and share .blend file in which the problem is visible?
Yes, this is now a known issue on OpenGL backend and won't be fixed further, see: #102251 (#102251 (comment))
GP Fill Tool not working on Mac with Metal GPU Backend, Draw Tool not working properly on OpenGLto GP Fill Tool not working on Mac with Metal GPU BackendWith the Metal Backend turned on in Preferences...
Thanks.
Still a blend file will help to speed up the investigation.
@Michael-Parkin-White-Apple hi, can you check?
Sorry, I did not think it was necessary since I am starting with a generic 2D Animation file. Here is an example file...
Ah right, I will take a look into this and see what is going on.
I just installed Blender 4.0 and tested the Fill Tool, and it is still not working. Only now there is another problem... there is no longer a section in the Preferences under System to switch between Metal and OpenGL! So the only workaround has been removed, which leaves Grease Pencil completely unusable for artists in Blender 4.0. Help!
Yes, the OpenGL support has been removed for MacOS because newer feature requires OpenGL 4.3:
cdb8a8929cSo this means the Fill Tool will simply not be available to folks using Intel Macs?
Is there another workaround for this issue?
I'm not sure when this will be fixed in legacy GP. But there will be a new generation of grease pencil (GPv3) in 4.1 which may not have this bug.
Okay, great. That sounds hopeful. 🙂