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Piotr Nikov (piotrnikov)
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User Since
Aug 21 2018, 8:46 AM (179 w, 3 d)

Recent Activity

Mon, Jan 3

Piotr Nikov (piotrnikov) created T94589: Linux & MaOs Intel 3.1 daily builds problem.
Mon, Jan 3, 6:43 AM · BF Blender

Dec 12 2021

Piotr Nikov (piotrnikov) added a comment to T86778: Viewport Slowdown on 11th gen Intel Xe graphics.

Hello!
Here is a video illustrating the issue in realtime. I left the TaskManager in frame in case it reveals something.
The steps:
. I load a simple scene (GreasePencil in my case).
. I go back and forth in the Timeline. It's smooth.
. I switch to Render Viewport..
. Just before fiddling around in the Timeline again I opened the Preference Window and moved it around. Just to show that the whole Blender interface is still smooth.
. I then went back and forth in the Timeline. Slowdown appears. The playhead no longer sticks to the mouse/pen movement.
. Opening the Preference Window and moving it around shows stutter and no longer is smooth.
Could this be a memory leak of sorts? A driver issue? Or is it because these Intel cards don't have any VRAM and start using er, something else (I have 16G of Ram and a lot of disk space)?
Either way it'd be great to find a solution for this. Being able to work on the go (with the Surface Pro in my case) is pretty awesome...
Thanks for any helpful hints or insights!

Dec 12 2021, 11:47 AM · EEVEE & Viewport, BF Blender

Dec 1 2021

Piotr Nikov (piotrnikov) added a comment to T93505: Timeline progressively getting slower and slower on Intel graphic cards (Win11 Surface Pro 7 & 8).

Is there no one seeing this?

Dec 1 2021, 10:52 AM · BF Blender

Nov 30 2021

Piotr Nikov (piotrnikov) created T93505: Timeline progressively getting slower and slower on Intel graphic cards (Win11 Surface Pro 7 & 8).
Nov 30 2021, 11:01 AM · BF Blender

Nov 13 2021

Piotr Nikov (piotrnikov) updated the task description for T93051: Mac laptop International Keyboard Issue (French) and weird behavior on Win10.
Nov 13 2021, 1:16 PM · BF Blender
Piotr Nikov (piotrnikov) created T93051: Mac laptop International Keyboard Issue (French) and weird behavior on Win10.
Nov 13 2021, 9:36 AM · BF Blender

Sep 7 2021

Piotr Nikov (piotrnikov) added a comment to T90952: Pen Tablet is inconstant/broken with WinTab..

Hi! I don't think this is a Wacom related bug. I have been having the same problem with the latest 3.0 alphas on my Surface Pro 7 using Windows Ink.
Works as expected on previous Blender version (2.92 at least).

Sep 7 2021, 9:36 AM · Platforms, Builds, Tests & Devices, Platform: Windows, BF Blender

Aug 31 2021

Piotr Nikov (piotrnikov) added a comment to D12324: Fix T88433: no greaspencil depsgraph evaluation with certain drivers.

Hi!
I'm not seeing this fixed in the latest nightly, is that normal?
Thanks!
Piotr

Aug 31 2021, 7:13 AM · Grease Pencil, Dependency Graph, Core, Animation & Rigging

Aug 26 2021

Piotr Nikov (piotrnikov) added a comment to T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback.

Sorry again for asking, but is this going to get fixed at some point?
Thanks,
Piotr

Aug 26 2021, 12:44 PM · Animation & Rigging, Grease Pencil, BF Blender

Aug 20 2021

Piotr Nikov (piotrnikov) updated the task description for T90795: Moving keys in Grease Pencil Dopesheet crashes Blender.
Aug 20 2021, 10:22 AM · Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) added a project to T90795: Moving keys in Grease Pencil Dopesheet crashes Blender: Grease Pencil.
Aug 20 2021, 10:11 AM · Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) created T90795: Moving keys in Grease Pencil Dopesheet crashes Blender.
Aug 20 2021, 10:07 AM · Grease Pencil, BF Blender

Aug 7 2021

Piotr Nikov (piotrnikov) added a project to T90505: MacOs Nightly builds broken?: Platform: macOS.
Aug 7 2021, 6:40 PM · Platform: macOS, BF Blender
Piotr Nikov (piotrnikov) created T90505: MacOs Nightly builds broken?.
Aug 7 2021, 6:40 PM · Platform: macOS, BF Blender

Jul 12 2021

Piotr Nikov (piotrnikov) added a comment to T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback.

Sorry for asking, but is this going to get fixed?

Jul 12 2021, 4:14 PM · Animation & Rigging, Grease Pencil, BF Blender

Jul 3 2021

Piotr Nikov (piotrnikov) updated the task description for T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback.
Jul 3 2021, 8:26 AM · Animation & Rigging, Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) added a comment to T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback.

Ok sorry for the multiple messages. Turns out I was wrong about 2.93 working! I thought I used Drivers on my scene but I wasn't...
So in short, in my experience, Drivers never worked with GP Local transforms.
I'm going to edit my first post to reflect that.
Sorry again for the confusion!

Jul 3 2021, 8:26 AM · Animation & Rigging, Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) added a comment to T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback.

Hi again! It worked on 2.93 (probably alpha or beta, that's when GP Local Transforms first appeared). I did a job back in March and everything worked as expected. But when I load the scene today it no longer does (same Driver problem).
My Blender scene is dated from the 27th of March if that helps you find the 2.93 version of that time (I don't see alpha/beta builds on Blender's archive site).
I don't know where to look in Blender to see precisely what version was used for that scene.
Tell me if you need anything that can help you pinpoint the problem....

Jul 3 2021, 7:39 AM · Animation & Rigging, Grease Pencil, BF Blender

Jul 1 2021

Piotr Nikov (piotrnikov) added a comment to T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback.

Hello again. I don't know if this helps, but the above steps work as expected on regular objects. So this bug only affects Grease Pencil...

Jul 1 2021, 5:11 PM · Animation & Rigging, Grease Pencil, BF Blender

Jun 22 2021

Piotr Nikov (piotrnikov) created T89366: Grease Pencil Parenting works but hides layers above the parented one..
Jun 22 2021, 5:01 PM · Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) added a comment to T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback.

Hi, this is still an issue. Any ideas on how to fix it? Or maybe a workaround? It's cool (and powerful!) to be able to use drivers with GP... Thanks!!!!

Jun 22 2021, 7:09 AM · Animation & Rigging, Grease Pencil, BF Blender

May 21 2021

Piotr Nikov (piotrnikov) updated subscribers of T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback.
May 21 2021, 5:05 PM · Animation & Rigging, Grease Pencil, BF Blender

May 20 2021

Piotr Nikov (piotrnikov) added a project to T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback: Platform: macOS.
May 20 2021, 4:42 PM · Animation & Rigging, Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) added a project to T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback: Grease Pencil.
May 20 2021, 4:41 PM · Animation & Rigging, Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) created T88433: Grease Pencil: Adding driver in Transform doesn't behave as expected during playback.
May 20 2021, 4:38 PM · Animation & Rigging, Grease Pencil, BF Blender

Mar 23 2021

Piotr Nikov (piotrnikov) added a comment to T86833: Grease Pencil Tool Addon Box deform does not work if modifier Lattice present.

Hi Piotr,
the multi-lattice in GP object is pretty new, I just didn't have time to make the change yet.
I will adapt the grease pencil tools addon to be compatible with this feature soon.

Mar 23 2021, 12:35 PM · Add-ons (Community), Grease Pencil
Piotr Nikov (piotrnikov) updated the task description for T86833: Grease Pencil Tool Addon Box deform does not work if modifier Lattice present.
Mar 23 2021, 6:58 AM · Add-ons (Community), Grease Pencil

Mar 22 2021

Piotr Nikov (piotrnikov) added projects to T86833: Grease Pencil Tool Addon Box deform does not work if modifier Lattice present: Grease Pencil, Add-ons (BF-Blender).
Mar 22 2021, 8:45 PM · Add-ons (Community), Grease Pencil
Piotr Nikov (piotrnikov) created T86833: Grease Pencil Tool Addon Box deform does not work if modifier Lattice present.
Mar 22 2021, 8:45 PM · Add-ons (Community), Grease Pencil

Mar 19 2021

Piotr Nikov (piotrnikov) added a comment to T86731: Blender WIN10 Freezes when clicking on Timeline.

@Falk David (filedescriptor) I did at some point yes. But removed it when trying to debug.

Mar 19 2021, 6:03 PM · Platform: Windows, BF Blender
Piotr Nikov (piotrnikov) added a comment to T86731: Blender WIN10 Freezes when clicking on Timeline.

This might be a duplicate of T86728.

Mar 19 2021, 4:28 PM · Platform: Windows, BF Blender
Piotr Nikov (piotrnikov) updated the task description for T86731: Blender WIN10 Freezes when clicking on Timeline.
Mar 19 2021, 10:55 AM · Platform: Windows, BF Blender
Piotr Nikov (piotrnikov) added a project to T86731: Blender WIN10 Freezes when clicking on Timeline: Platform: Windows.
Mar 19 2021, 9:52 AM · Platform: Windows, BF Blender
Piotr Nikov (piotrnikov) created T86731: Blender WIN10 Freezes when clicking on Timeline.
Mar 19 2021, 9:52 AM · Platform: Windows, BF Blender

Feb 23 2021

Piotr Nikov (piotrnikov) added a comment to T85916: Full copy of scene doesn't behave as expected with shaders (maybe among other things) .

Do you have this turned OFF (seems like this is now respected -- will dig up which commit did this)?

Feb 23 2021, 4:52 PM · BF Blender
Piotr Nikov (piotrnikov) renamed T85916: Full copy of scene doesn't behave as expected with shaders (maybe among other things) from Full copy of scene doesn't act as expected with shaders (maybe among other things) to Full copy of scene doesn't behave as expected with shaders (maybe among other things) .
Feb 23 2021, 12:02 PM · BF Blender
Piotr Nikov (piotrnikov) created T85916: Full copy of scene doesn't behave as expected with shaders (maybe among other things) .
Feb 23 2021, 12:02 PM · BF Blender

Feb 18 2021

Piotr Nikov (piotrnikov) added a project to T85769: Grease Pencil Fill option when drawing no longer works in latest nightly: Grease Pencil.
Feb 18 2021, 2:32 PM · Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) created T85769: Grease Pencil Fill option when drawing no longer works in latest nightly.
Feb 18 2021, 2:31 PM · Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) added a comment to T85648: macOS: addons fail to import due to Python 3.9 libraries linking against libz.dylib.

Sure! Here are two outputs from two machines (working and non-working). In case it's helpful...

Feb 18 2021, 11:53 AM · BF Blender (2.93), Platforms, Builds, Tests & Devices, Platform: macOS
Piotr Nikov (piotrnikov) updated subscribers of T85648: macOS: addons fail to import due to Python 3.9 libraries linking against libz.dylib.

@Ankit jain (Ankit) Meel (ankitm)
Nope sorry. The latest nightly gives me the same error (related to Python?). I have to disable the mac's SIP to access the addon...

Feb 18 2021, 10:40 AM · BF Blender (2.93), Platforms, Builds, Tests & Devices, Platform: macOS

Feb 16 2021

Piotr Nikov (piotrnikov) added a comment to T85648: macOS: addons fail to import due to Python 3.9 libraries linking against libz.dylib.
Feb 16 2021, 8:55 AM · BF Blender (2.93), Platforms, Builds, Tests & Devices, Platform: macOS
Piotr Nikov (piotrnikov) added a comment to T85648: macOS: addons fail to import due to Python 3.9 libraries linking against libz.dylib.

Ok I found a workaround. It's a Mac security issue.
When I disable the Mac's SIP (System Integrity Protection), I can load the Addon without any errors and everything works as expected.
I have no clue how to solve this at a Blender (Rigify?) level. Can anyone help? I'm not sure it's a good idea to lower the system's security to be able to run an addon...

Feb 16 2021, 8:48 AM · BF Blender (2.93), Platforms, Builds, Tests & Devices, Platform: macOS

Feb 15 2021

Piotr Nikov (piotrnikov) added a project to T85648: macOS: addons fail to import due to Python 3.9 libraries linking against libz.dylib: Platform: macOS.
Feb 15 2021, 12:21 PM · BF Blender (2.93), Platforms, Builds, Tests & Devices, Platform: macOS
Piotr Nikov (piotrnikov) created T85648: macOS: addons fail to import due to Python 3.9 libraries linking against libz.dylib.
Feb 15 2021, 12:21 PM · BF Blender (2.93), Platforms, Builds, Tests & Devices, Platform: macOS

Feb 12 2021

Piotr Nikov (piotrnikov) added a project to T85581: Grease Pencil draw on surface doesn't draw on surface: Grease Pencil.
Feb 12 2021, 12:40 PM · Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) created T85581: Grease Pencil draw on surface doesn't draw on surface.
Feb 12 2021, 12:39 PM · Grease Pencil, BF Blender

Jan 28 2021

Piotr Nikov (piotrnikov) closed T85161: GreasePencil tearing/disappearing on MacOs with AMD Radeon Pro 5500M 8 GB as Resolved.
Jan 28 2021, 6:21 PM · Grease Pencil, Platform: macOS, BF Blender
Piotr Nikov (piotrnikov) added projects to T85161: GreasePencil tearing/disappearing on MacOs with AMD Radeon Pro 5500M 8 GB : Platform: macOS, Grease Pencil.
Jan 28 2021, 5:31 PM · Grease Pencil, Platform: macOS, BF Blender
Piotr Nikov (piotrnikov) created T85161: GreasePencil tearing/disappearing on MacOs with AMD Radeon Pro 5500M 8 GB .
Jan 28 2021, 5:29 PM · Grease Pencil, Platform: macOS, BF Blender

Aug 22 2020

Piotr Nikov (piotrnikov) added a comment to T79971: Regression: Transform Gizmos doesnt work anymore.

Now its solved
Thanks for your effort @Clément Foucault (fclem)

Aug 22 2020, 7:16 AM · EEVEE & Viewport, BF Blender

Aug 21 2020

Piotr Nikov (piotrnikov) added a comment to T79971: Regression: Transform Gizmos doesnt work anymore.

Here on WIN10 latest Blender nightly build, the gizmo works again (it didn't yesterday). You can transform when when you click on the red green blue helpers. But gimbal rotation is no longer recognized...

Aug 21 2020, 6:06 PM · EEVEE & Viewport, BF Blender

Aug 13 2020

Piotr Nikov (piotrnikov) added a comment to T79703: Eevee crash on Macos when trying to render frame.

The latest builds seem to have fixed the issue for me. Thanks!!

Aug 13 2020, 7:38 PM · BF Blender (2.90), EEVEE & Viewport, Platform: macOS

Aug 11 2020

Piotr Nikov (piotrnikov) updated the task description for T79703: Eevee crash on Macos when trying to render frame.
Aug 11 2020, 12:23 PM · BF Blender (2.90), EEVEE & Viewport, Platform: macOS
Piotr Nikov (piotrnikov) updated the task description for T79703: Eevee crash on Macos when trying to render frame.
Aug 11 2020, 12:21 PM · BF Blender (2.90), EEVEE & Viewport, Platform: macOS
Piotr Nikov (piotrnikov) updated the task description for T79703: Eevee crash on Macos when trying to render frame.
Aug 11 2020, 12:20 PM · BF Blender (2.90), EEVEE & Viewport, Platform: macOS
Piotr Nikov (piotrnikov) created T79703: Eevee crash on Macos when trying to render frame.
Aug 11 2020, 12:05 PM · BF Blender (2.90), EEVEE & Viewport, Platform: macOS

May 27 2020

Piotr Nikov (piotrnikov) added a comment to T77104: Grease Pencil: Some Sculpting Tools are no longer working with Grease Pencil Objects.

Oh yes it does!!
Sorry for the trouble and thanks for the answer!

May 27 2020, 2:11 PM · Grease Pencil, Add-ons (Community)
Piotr Nikov (piotrnikov) added a project to T77104: Grease Pencil: Some Sculpting Tools are no longer working with Grease Pencil Objects: Grease Pencil.
May 27 2020, 10:59 AM · Grease Pencil, Add-ons (Community)
Piotr Nikov (piotrnikov) created T77104: Grease Pencil: Some Sculpting Tools are no longer working with Grease Pencil Objects.
May 27 2020, 10:59 AM · Grease Pencil, Add-ons (Community)

May 20 2020

Piotr Nikov (piotrnikov) added a comment to T76903: GPencil: Hard to erase drawing when layer parented to animated object.

Ah ok sorry. I was confused by the fact that it worked in edit mode without issues.
Thanks Antonio!

May 20 2020, 12:48 PM · Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) added a project to T76903: GPencil: Hard to erase drawing when layer parented to animated object: Grease Pencil.
May 20 2020, 9:29 AM · Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) created T76903: GPencil: Hard to erase drawing when layer parented to animated object.
May 20 2020, 9:28 AM · Grease Pencil, BF Blender

May 19 2020

Piotr Nikov (piotrnikov) added a comment to T76851: Grease Pencil Behavior changes Brush when going in and out of Drawing mode.

That was very fast! Thanks so much!!

May 19 2020, 6:56 AM · BF Blender (2.83), Grease Pencil

May 18 2020

Piotr Nikov (piotrnikov) added a project to T76851: Grease Pencil Behavior changes Brush when going in and out of Drawing mode: Grease Pencil.
May 18 2020, 8:48 AM · BF Blender (2.83), Grease Pencil
Piotr Nikov (piotrnikov) created T76851: Grease Pencil Behavior changes Brush when going in and out of Drawing mode.
May 18 2020, 8:47 AM · BF Blender (2.83), Grease Pencil

Mar 30 2020

Piotr Nikov (piotrnikov) updated the task description for T75206: Cycles f-curve modifier wrong behavior when restricting frame range.
Mar 30 2020, 8:08 AM · Animation & Rigging, BF Blender
Piotr Nikov (piotrnikov) updated the task description for T75206: Cycles f-curve modifier wrong behavior when restricting frame range.
Mar 30 2020, 7:51 AM · Animation & Rigging, BF Blender
Piotr Nikov (piotrnikov) updated the task description for T75206: Cycles f-curve modifier wrong behavior when restricting frame range.
Mar 30 2020, 7:49 AM · Animation & Rigging, BF Blender
Piotr Nikov (piotrnikov) created T75206: Cycles f-curve modifier wrong behavior when restricting frame range.
Mar 30 2020, 7:47 AM · Animation & Rigging, BF Blender

Mar 19 2020

Piotr Nikov (piotrnikov) added a comment to T74715: GreasePencil Non smooth drawing experience in Viewport Preview Material Mode.

Hey! I found out what was causing the problem. I have an app called BetterTouchTool running and turning it off actually solves this problem.
Sorry about this. I'll warn the developer of the app.
And thanks again for everything :)

Mar 19 2020, 10:17 AM · Grease Pencil, BF Blender

Mar 13 2020

Piotr Nikov (piotrnikov) renamed T74715: GreasePencil Non smooth drawing experience in Viewport Preview Material Mode from Non smooth drawing experience in Viewport Preview Material Mode to GreasePencil Non smooth drawing experience in Viewport Preview Material Mode.
Mar 13 2020, 8:07 AM · Grease Pencil, BF Blender
Piotr Nikov (piotrnikov) created T74715: GreasePencil Non smooth drawing experience in Viewport Preview Material Mode.
Mar 13 2020, 8:04 AM · Grease Pencil, BF Blender

Mar 2 2020

Piotr Nikov (piotrnikov) added a comment to T74153: Blender crashes when fiddling with Grease Pencil Materials on latest version of Macos.

Hello,
This crash seems to be gone with the latest nightles.

Mar 2 2020, 3:54 PM · Grease Pencil, Platform: macOS, BF Blender

Feb 27 2020

Piotr Nikov (piotrnikov) added a project to T74153: Blender crashes when fiddling with Grease Pencil Materials on latest version of Macos: Grease Pencil.
Feb 27 2020, 6:02 AM · Grease Pencil, Platform: macOS, BF Blender

Feb 24 2020

Piotr Nikov (piotrnikov) updated the task description for T74153: Blender crashes when fiddling with Grease Pencil Materials on latest version of Macos.
Feb 24 2020, 10:11 AM · Grease Pencil, Platform: macOS, BF Blender
Piotr Nikov (piotrnikov) updated the task description for T74153: Blender crashes when fiddling with Grease Pencil Materials on latest version of Macos.
Feb 24 2020, 10:09 AM · Grease Pencil, Platform: macOS, BF Blender
Piotr Nikov (piotrnikov) updated the task description for T74153: Blender crashes when fiddling with Grease Pencil Materials on latest version of Macos.
Feb 24 2020, 9:56 AM · Grease Pencil, Platform: macOS, BF Blender
Piotr Nikov (piotrnikov) created T74153: Blender crashes when fiddling with Grease Pencil Materials on latest version of Macos.
Feb 24 2020, 9:32 AM · Grease Pencil, Platform: macOS, BF Blender

Oct 18 2019

Piotr Nikov (piotrnikov) added a comment to T69521: Instancing Grease pencil with particles really (reallyyy!!!!) slow.

Of course!
Thanks so much for responding to this.

Oct 18 2019, 5:15 PM · BF Blender
Piotr Nikov (piotrnikov) added a comment to T69521: Instancing Grease pencil with particles really (reallyyy!!!!) slow.

In my PC I can move easily 1000 particles. My advice if you want use thousands is draw in GPencil what you want and then bake the result as texture and use this texture in a plane that you use in the particles.

Oct 18 2019, 4:56 PM · BF Blender
Piotr Nikov (piotrnikov) added a comment to T69521: Instancing Grease pencil with particles really (reallyyy!!!!) slow.

Steps:
. Draw a ball with Grease pencil. Or anything basic.
. Create Mesh Plane.
. Create Particles on Plane. Choose Hair Emission.
. Choose Render Object. Pick Grease Pencil ball.
. Result: Viewport insanely slow, even when lowering number of particles.

Oct 18 2019, 4:30 PM · BF Blender

Sep 5 2019

Piotr Nikov (piotrnikov) created T69521: Instancing Grease pencil with particles really (reallyyy!!!!) slow.
Sep 5 2019, 9:04 AM · BF Blender

Aug 21 2019

Piotr Nikov (piotrnikov) added a comment to D3162: Animall: Key only selected, POLY fix and fcurve groups.

Hey again,

Aug 21 2019, 11:22 AM · Add-ons (Community)
Piotr Nikov (piotrnikov) added a comment to D3162: Animall: Key only selected, POLY fix and fcurve groups.

Hello Damien!

Aug 21 2019, 10:36 AM · Add-ons (Community)
Piotr Nikov (piotrnikov) added a comment to D3162: Animall: Key only selected, POLY fix and fcurve groups.

Hello!
This doesn't seem to work on curve points. Unless I'm mistaken of course!
. Add Circle (or any sort of curves), go in Edit Mode.
. Choose point, Insert Key.
. Change frame, move point, Insert Key: The point snaps back to where it was, resulting in no animation...
Am I the only one?

Aug 21 2019, 8:30 AM · Add-ons (Community)

Oct 25 2018

Piotr Nikov (piotrnikov) added a comment to T57349: Greace pensil does not like new macs.

I think it's the same problem as here: https://developer.blender.org/T56447
It's not that it's "not working" but it feels like there are clipping issues that disrupt the display.
https://www.youtube.com/watch?v=fAMas7tH8GA
Lowering the quality of the viewport makes it "work"...

Oct 25 2018, 11:18 AM · BF Blender

Oct 19 2018

Piotr Nikov (piotrnikov) created T57300: Blender 2.8 - Sculpt not working with Grease pencil Left-Click Configuration.
Oct 19 2018, 10:55 AM · BF Blender

Aug 26 2018

Piotr Nikov (piotrnikov) added a comment to T56447: Grease Pencil is showed intermittently on Mac.

Ok I found a solution.
It seems like the Viewport Quality Settings (in User Preferences/System) when set to anything else than 0, screws up the 3D Viewport.
In short, for anyone having the above problem on MacOs, put that setting on 0.
Voilà!

Aug 26 2018, 9:12 AM · Grease Pencil, Platform: macOS, BF Blender: 2.8

Aug 24 2018

Piotr Nikov (piotrnikov) added a comment to T56447: Grease Pencil is showed intermittently on Mac.

Er, I'm not really used to these forums so sorry in advance for asking.
Is anyone taking care of this MacOs gfx problem? Or need more information?
Happy to help if I can...

Aug 24 2018, 12:52 PM · Grease Pencil, Platform: macOS, BF Blender: 2.8

Aug 21 2018

Piotr Nikov (piotrnikov) added a comment to T56447: Grease Pencil is showed intermittently on Mac.

Hey!
I did a second comparison ADM/Intel.
https://youtu.be/fAMas7tH8GA
AMD: Graphic glitches galore, but fast interaction.
Intel: No glitches, but object manipulation feels really sluggish.

Aug 21 2018, 11:00 AM · Grease Pencil, Platform: macOS, BF Blender: 2.8
Piotr Nikov (piotrnikov) added a comment to T56447: Grease Pencil is showed intermittently on Mac.

Hello!
Is this what you're talking about?
https://youtu.be/T5PkOPs8lrg
(Watch until the end for my machines specs).
This seems only to happen with the AMD GPU (Radeon Pro 455 in my case).
As a test, I've forced MacOs to use the Intel HD Graphics 530 and it works as expected (although everything seems really slow).

Aug 21 2018, 9:22 AM · Grease Pencil, Platform: macOS, BF Blender: 2.8