Grease pencil transparency issue over Camera Background Image #71084

Closed
opened 2019-10-25 02:53:45 +02:00 by Luciano Muñoz Sessarego · 10 comments

System Information
Operating system: Linux-3.10.0-693.21.1.el7.x86_64-x86_64-with-centos-7.4.1708-Core 64 Bits
Graphics card: Quadro M5000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 396.54

Blender Version
Broken: version: 2.82 (sub 1), branch: master, commit date: 2019-10-24 19:11, hash: 2a3b5dc730
Worked: (optional)

Short description of error
Grease pencil has weird edges when put over a Camera Background Image (it doesnt happen over an image texture)

Exact steps for others to reproduce the error
Create a new 2D animation file
drag and drop an image to the viewport to get it as a background image
draw on top of it.
see the white borders around the drawing?, its much worse when the strenght of the pencil is driven by pressure or when the strength is not 100 percent.

here are some samples

Screenshot from 2019-10-25 11-53-09.png

Screenshot from 2019-10-25 11-52-19.png

Screenshot from 2019-10-25 11-24-12.png

Screenshot from 2019-10-25 11-24-29.png

**System Information** Operating system: Linux-3.10.0-693.21.1.el7.x86_64-x86_64-with-centos-7.4.1708-Core 64 Bits Graphics card: Quadro M5000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 396.54 **Blender Version** Broken: version: 2.82 (sub 1), branch: master, commit date: 2019-10-24 19:11, hash: `2a3b5dc730` Worked: (optional) **Short description of error** Grease pencil has weird edges when put over a Camera Background Image (it doesnt happen over an image texture) **Exact steps for others to reproduce the error** Create a new 2D animation file drag and drop an image to the viewport to get it as a background image draw on top of it. see the white borders around the drawing?, its much worse when the strenght of the pencil is driven by pressure or when the strength is not 100 percent. here are some samples ![Screenshot from 2019-10-25 11-53-09.png](https://archive.blender.org/developer/F7855326/Screenshot_from_2019-10-25_11-53-09.png) ![Screenshot from 2019-10-25 11-52-19.png](https://archive.blender.org/developer/F7855325/Screenshot_from_2019-10-25_11-52-19.png) ![Screenshot from 2019-10-25 11-24-12.png](https://archive.blender.org/developer/F7855324/Screenshot_from_2019-10-25_11-24-12.png) ![Screenshot from 2019-10-25 11-24-29.png](https://archive.blender.org/developer/F7855323/Screenshot_from_2019-10-25_11-24-29.png)
Author
Member

Added subscriber: @LucianoMunoz

Added subscriber: @LucianoMunoz

Added subscriber: @antoniov

Added subscriber: @antoniov

I guess this is related to #66293

I guess this is related to #66293
Member

Added subscriber: @lichtwerk

Added subscriber: @lichtwerk
Member

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

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

@antoniov : should we merge this into #66293 then?

note: at the current state of https://developer.blender.org/diffusion/B/history/greasepencil-refactor/ (84bf68186d) this does not seem to be solved there...

@antoniov : should we merge this into #66293 then? note: at the current state of https://developer.blender.org/diffusion/B/history/greasepencil-refactor/ (84bf68186d) this does not seem to be solved there...

Added subscriber: @fclem

Added subscriber: @fclem

@lichtwerk Not sure. I keept this task because I don't know if this must be fixed in GP Drawing Engine or it's in other drawing areas.

@fclem What do you think?

BTW: The refactoring is in progress and still a lot of things pending.

@lichtwerk Not sure. I keept this task because I don't know if this must be fixed in GP Drawing Engine or it's in other drawing areas. @fclem What do you think? BTW: The refactoring is in progress and still a lot of things pending.

Tested and fixed in refactored engine.

Tested and fixed in refactored engine.

Closed as duplicate of #66293

Closed as duplicate of #66293
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Reference: blender/blender#71084
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