[Grease Pencil] Flickering with Codependent Masks #93610

New Issue

Brian Granatir · 2021-12-03T20:16:50+01:00

Brian Granatir commented

2021-12-03 20:16:50 +01:00

System Information
Operating system: macOS-12.0.1-arm64-arm-64bit 64 Bits
Graphics card: Apple M1 Apple 4.1 Metal - 76.1

Blender Version
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: f1cca30557
Additional Broken: 2.93.5 (Native Apple Silicon), 2.83.18 (Intel)
Worked: Can't find a working version

Short description of error
Having masks on two objects that reference each other causes a continuous flickering effect in the 3D Viewport.

Exact steps for others to reproduce the error
Default Setup

Create new 2D Animation project
On first layer (Lines), create a Box.
On second layer (Fills), create a Circle.
Add fill color to default material (Solid Stroke). Makes it easier to see flickering.
For the first layer (Lines - contains box from step 2), enable Masks and add a new mask for the second layer (Fills - contains circle from step 3).
For the second layer (Fills / circle), enable Masks and add a new masks for the first layer (Lines / box)
Invert mask created in previous step (Step 6).
In Edit Mode, move the box over the circle.
Flickering will begin. Scrub timeline or pan viewport to see the effect continue.

Video Showing Flicker:
flicker.mov

Blend File That Reproduced Above Steps:
mask_flicker.blend

**System Information** Operating system: macOS-12.0.1-arm64-arm-64bit 64 Bits Graphics card: Apple M1 Apple 4.1 Metal - 76.1 **Blender Version** Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: `f1cca30557` Additional Broken: 2.93.5 (Native Apple Silicon), 2.83.18 (Intel) Worked: Can't find a working version **Short description of error** Having masks on two objects that reference each other causes a continuous flickering effect in the 3D Viewport. **Exact steps for others to reproduce the error** Default Setup 1. Create new 2D Animation project 2. On first layer (Lines), create a Box. 3. On second layer (Fills), create a Circle. 4. Add fill color to default material (Solid Stroke). Makes it easier to see flickering. 5. For the first layer (Lines - contains box from step 2), enable Masks and add a new mask for the second layer (Fills - contains circle from step 3). 6. For the second layer (Fills / circle), enable Masks and add a new masks for the first layer (Lines / box) 7. Invert mask created in previous step (Step 6). 8. In Edit Mode, move the box over the circle. 9. Flickering will begin. Scrub timeline or pan viewport to see the effect continue. Video Showing Flicker: [flicker.mov](https://archive.blender.org/developer/F12687438/flicker.mov) Blend File That Reproduced Above Steps: [mask_flicker.blend](https://archive.blender.org/developer/F12687441/mask_flicker.blend)

Brian Granatir commented

2021-12-03 20:16:50 +01:00

Added subscriber: @brian.granatir

Germano Cavalcante commented

2021-12-06 21:28:49 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-12-06 21:28:49 +01:00

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

Germano Cavalcante commented

2021-12-06 21:28:49 +01:00

I can confirm. And the problem is apparently only seen on mac.

System Information
Operating system: macOS-11.6-arm64-arm-64bit 64 Bits
Graphics card: Apple M1 Apple 4.1 Metal - 71.7.1

I can confirm. And the problem is apparently only seen on mac. --- **System Information** Operating system: `macOS-11.6-arm64-arm-64bit 64 Bits` Graphics card: `Apple M1 Apple 4.1 Metal - 71.7.1`

Philipp Oeser removed the

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[Grease Pencil] Flickering with Codependent Masks #93610