Grease Pencil: display of stroke is broken when depth order is set to 3D location #75684

New Issue

Stuart Coutts · 2020-04-13T17:06:08+02:00

Stuart Coutts commented

2020-04-13 17:06:08 +02:00

Hi Antonio, apologies for the previous bug report attempt, I hope this is better

System Information
Operating system: Windows 10
Graphics card: NVidea GeForce GTX 1060 6GB/PCIe/SSE2
system Info file: system-info.txt

Blender Version
Broken: 2.8, 2.82, 2.83
Worked: Not aware of a version where it worked

Short description of error

strokes draw broken (have strange transparency artifacts) when depth order is set to 3D location, and when the camera is in motion around the object - most obvious when looking along the x axis in the positive direction.

It is also most obvious with textured brushes.

Exact steps for others to reproduce the error

draw 3 strokes with grease pencil, one with Strength set to 5.000, one with strength set to 1.000, and one with a textured brush at 1.000
in GP object set depth order to "3D Location"
Tumble camera view around the stroke - artifacts will appear, mostly when looking along +X axis

Scene file
3D location bug2.blend

Hi Antonio, apologies for the previous bug report attempt, I hope this is better **System Information** Operating system: Windows 10 Graphics card: NVidea GeForce GTX 1060 6GB/PCIe/SSE2 system Info file: [system-info.txt](https://archive.blender.org/developer/F8469202/system-info.txt) **Blender Version** Broken: 2.8, 2.82, 2.83 Worked: Not aware of a version where it worked **Short description of error** strokes draw broken (have strange transparency artifacts) when depth order is set to 3D location, and when the camera is in motion around the object - most obvious when looking along the x axis in the positive direction. It is also most obvious with **textured brushes.** **Exact steps for others to reproduce the error** 1. draw 3 strokes with grease pencil, one with Strength set to 5.000, one with strength set to 1.000, and one with a textured brush at 1.000 2. in GP object set depth order to "3D Location" 3. Tumble camera view around the stroke - artifacts will appear, mostly when looking along +X axis **Scene file** [3D location bug2.blend](https://archive.blender.org/developer/F8469201/3D_location_bug2.blend)

Stuart Coutts commented

2020-04-13 17:06:08 +02:00

Added subscriber: @Scoutts

Antonio Vazquez commented

2020-04-13 17:28:54 +02:00

Added subscriber: @antoniov

Antonio Vazquez commented

2020-04-13 17:28:54 +02:00

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

Antonio Vazquez closed this issue

2020-04-13 17:28:54 +02:00

Antonio Vazquez self-assigned this 2020-04-13 17:28:54 +02:00

Antonio Vazquez commented

2020-04-13 17:28:54 +02:00

This is not a bug a but a limitation/design decission of Grease Pencil.

Grease Pencil is a 2D drawing in 3D environment, but the strokes are always drawn as a billboard face to point of view. In your file, when you rotate, the circles always are flat to camera and this add opacity in your example. When you enable the 3D mode, you can move around in the 3D space the strokes, but always flat to point of view.

Thanks for the report, but the issue reported here is a request for modified/improved behavior and not a bug in current behavior. Closing as this bug tracker is only for bugs and errors.

For user requests and feedback, please use other channels: https://wiki.blender.org/wiki/Communication/Contact#User_Feedback_and_Requests

For more information on why this isn't considered a bug, visit: https://wiki.blender.org/wiki/Reference/Not_a_bug

This is not a bug a but a limitation/design decission of Grease Pencil. Grease Pencil is a 2D drawing in 3D environment, but the strokes are always drawn as a billboard face to point of view. In your file, when you rotate, the circles always are flat to camera and this add opacity in your example. When you enable the 3D mode, you can move around in the 3D space the strokes, but always flat to point of view. Thanks for the report, but the issue reported here is a request for modified/improved behavior and not a bug in current behavior. Closing as this bug tracker is only for bugs and errors. For user requests and feedback, please use other channels: https://wiki.blender.org/wiki/Communication/Contact#User_Feedback_and_Requests For more information on why this isn't considered a bug, visit: https://wiki.blender.org/wiki/Reference/Not_a_bug

Pratik Borhade referenced this issue

2024-01-22 06:05:43 +01:00

Grease Pencil Artefact when Stroke Depth set to 3D Location #117378

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Grease Pencil: display of stroke is broken when depth order is set to 3D location #75684