Grease Pencil Viewport performance drop #85834

New Issue

Dan Pastean · 2021-02-21T08:04:50+01:00

Dan Pastean commented

2021-02-21 08:04:50 +01:00

System Information
Operating system: Linux-5.4.0-65-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: Radeon RX 580 Series (POLARIS10, DRM 3.40.0, 5.4.0-65-generic, LLVM 11.0.0) X.Org 4.6 (Core Profile) Mesa 20.2.6

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-02-20 21:05, hash: 6c2e1f3398
Worked: not sure i just use 2.9 and up, first time i noticed, also it does the same in 2.92 candidate

Short description of error
No matter the amount of points a grease pencil object has, the performance drom is the same on my case, while selecting multiple grease pencil objects performance suffers masivly

Exact steps for others to reproduce the error
ive attached a file for faster verification, start up with a grease pencil object, draw something, (in my case i changed the origin of the object to the center of the square) then Alt-D the thing, the more you link duplicate it the slower it becomes once you select the objects. While unselected the performance is good and normal.

GP_performance drop.blend

**System Information** Operating system: Linux-5.4.0-65-generic-x86_64-with-glibc2.31 64 Bits Graphics card: Radeon RX 580 Series (POLARIS10, DRM 3.40.0, 5.4.0-65-generic, LLVM 11.0.0) X.Org 4.6 (Core Profile) Mesa 20.2.6 **Blender Version** Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-02-20 21:05, hash: `6c2e1f3398` Worked: not sure i just use 2.9 and up, first time i noticed, also it does the same in 2.92 candidate **Short description of error** No matter the amount of points a grease pencil object has, the performance drom is the same on my case, while selecting multiple grease pencil objects performance suffers masivly **Exact steps for others to reproduce the error** ive attached a file for faster verification, start up with a grease pencil object, draw something, (in my case i changed the origin of the object to the center of the square) then Alt-D the thing, the more you link duplicate it the slower it becomes once you select the objects. While unselected the performance is good and normal. [GP_performance drop.blend](https://archive.blender.org/developer/F9824272/GP_performance_drop.blend)

Dan Pastean commented

2021-02-21 08:04:50 +01:00

Added subscriber: @Pastean_Narcis_Dan

Falk David commented

2021-02-25 13:07:45 +01:00

Added subscriber: @filedescriptor

Falk David commented

2021-02-25 13:07:45 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Falk David commented

2021-02-25 13:07:45 +01:00

I cannot reproduce this. After a couple of thousand of duplicates, the viewport slows down, but the selection does not matter. Basically blender slows down as a whole for me. It's the same in 2.91 and 2.93.
Maybe I am misunderstanding how to reproduce the issue. Could you clarify how to reproduce the performance drop with exact steps?

I cannot reproduce this. After a couple of thousand of duplicates, the viewport slows down, but the selection does not matter. Basically blender slows down as a whole for me. It's the same in 2.91 and 2.93. Maybe I am misunderstanding how to reproduce the issue. Could you clarify how to reproduce the performance drop with exact steps?

Dan Pastean commented

2021-02-25 15:08:57 +01:00

Using KDE as a desktop envoirment, the default compositor is opengl 3.1, while using blender and grease pencil (probably other areas too, i havent tested) as the scene increases in complexity (meaning copy and pasting more instances of grease pencil), the compositor crashes (im quessing, there is no screen feedback), and the performance drops. After that the KDE compositor settings displays a message that something went wrong and turns of opengl giving me the option to turn it back on. After a while it crashes again. It may be a mesa issue, or KDE issue, im not sure because my abilityes in the matter are limited, however it only hapens in Blender. The compositor doesnt crash in other apps, however once it does in blender its visible in all other apps.
So far switching it to OpenGL 2.0 as a compositor doesnt give any issues but its a bit slower on some scenes.
I hope this helps, i'm still learning Linux as an OS

Using KDE as a desktop envoirment, the default compositor is opengl 3.1, while using blender and grease pencil (probably other areas too, i havent tested) as the scene increases in complexity (meaning copy and pasting more instances of grease pencil), the compositor crashes (im quessing, there is no screen feedback), and the performance drops. After that the KDE compositor settings displays a message that something went wrong and turns of opengl giving me the option to turn it back on. After a while it crashes again. It may be a mesa issue, or KDE issue, im not sure because my abilityes in the matter are limited, however it only hapens in Blender. The compositor doesnt crash in other apps, however once it does in blender its visible in all other apps. So far switching it to OpenGL 2.0 as a compositor doesnt give any issues but its a bit slower on some scenes. I hope this helps, i'm still learning Linux as an OS

Falk David commented

2021-02-27 13:37:13 +01:00

Changed status from 'Needs User Info' to: 'Needs Triage'

Germano Cavalcante commented

2021-03-02 14:41:50 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-03-02 14:41:50 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Germano Cavalcante commented

2021-03-02 14:41:50 +01:00

I don't have the hardware to test, but I believe it is the same problem as described in #83488 (Grease pencil object outline shader fails to compile on radeonsi).
@Pastean_Narcis_Dan, can you confirm if it is the same?

I don't have the hardware to test, but I believe it is the same problem as described in #83488 (Grease pencil object outline shader fails to compile on radeonsi). @Pastean_Narcis_Dan, can you confirm if it is the same?

Dan Pastean commented

2021-03-02 22:25:08 +01:00

Im not sure if i get the same result as them, but running blender terminal i get similar errors, even on the blender versions that they claim doesnt have it

/run/user/1000/gvfs/ non-existent directory
found bundled python: /home/npdan/Downloads/Blender/stable/blender-2.83.12-linux64/2.83/python
LLVM triggered Diagnostic Handler: Illegal instruction detected: VOP* instruction violates constant bus restriction
renamable $vgpr3 = V_CNDMASK_B32_e32 32768, killed $vgpr3, implicit killed $vcc, implicit $exec
LLVM failed to compile shader
radeonsi: can't compile a main shader part

Im not sure if i get the same result as them, but running blender terminal i get similar errors, even on the blender versions that they claim doesnt have it /run/user/1000/gvfs/ non-existent directory found bundled python: /home/npdan/Downloads/Blender/stable/blender-2.83.12-linux64/2.83/python LLVM triggered Diagnostic Handler: Illegal instruction detected: VOP* instruction violates constant bus restriction renamable $vgpr3 = V_CNDMASK_B32_e32 32768, killed $vgpr3, implicit killed $vcc, implicit $exec LLVM failed to compile shader radeonsi: can't compile a main shader part

Germano Cavalcante commented

2021-03-03 14:02:55 +01:00

Apparently, it is the same problem (or an effect of the same problem).
So I will merge the reports.

Apparently, it is the same problem (or an effect of the same problem). So I will merge the reports.

Germano Cavalcante commented

2021-03-03 14:03:19 +01:00

Closed as duplicate of #83488

Germano Cavalcante closed this issue

2021-03-03 14:03:19 +01:00

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Grease Pencil Viewport performance drop #85834