M1 Solid Shadow slows down #93073

New Issue

Alex · 2021-11-14T16:13:53+01:00

Alex commented

2021-11-14 16:13:53 +01:00

System Information
Operating system: macOS-11.2.3-arm64-arm-64bit 64 Bits
Graphics card: Apple M1 Apple 4.1 Metal - 71.0.7

Blender Version
Broken: version: 2.93.6 Release Candidate, branch: master, commit date: 2021-11-10 09:31, hash: fa99d3e53b

Short description of error
Scene slows down a lot in Solid mode with shadow on
m1_solid_shadow.blend

Exact steps for others to reproduce the error
Add 200+ simple objects to the scene. In Solid mode, turn on Shadow.

**System Information** Operating system: macOS-11.2.3-arm64-arm-64bit 64 Bits Graphics card: Apple M1 Apple 4.1 Metal - 71.0.7 **Blender Version** Broken: version: 2.93.6 Release Candidate, branch: master, commit date: 2021-11-10 09:31, hash: `fa99d3e53b` **Short description of error** Scene slows down a lot in Solid mode with shadow on [m1_solid_shadow.blend](https://archive.blender.org/developer/F11803607/m1_solid_shadow.blend) **Exact steps for others to reproduce the error** Add 200+ simple objects to the scene. In Solid mode, turn on Shadow.

Alex commented

2021-11-14 16:13:53 +01:00

Added subscriber: @makseemoff-4

blender-admin commented

2021-11-14 16:13:53 +01:00

#99988 was marked as duplicate of this issue

Alex commented

2021-11-14 16:21:46 +01:00

This comment was removed by @makseemoff-4

*This comment was removed by @makseemoff-4*

Hans Goudey commented

2021-11-15 05:55:48 +01:00

Added subscriber: @HooglyBoogly

Hans Goudey commented

2021-11-15 05:55:48 +01:00

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

Hans Goudey commented

2021-11-15 05:55:48 +01:00

Thanks for the report. Is this a regression? Turning shadows on is expected to slow down the viewport display, since it's doing much more.
If it isn't a regression, then we generally wouldn't track requests for improved performance on the bug tracker.

Thanks for the report. Is this a regression? Turning shadows on is expected to slow down the viewport display, since it's doing much more. If it isn't a regression, then we generally wouldn't track requests for improved performance on the bug tracker.

Alex commented

2021-11-15 11:16:59 +01:00

Yes, this is a regression. I checked it on my old MacBook 13 2015 and this project, with shadow enabled in Solid mode, does not slow down. And on the new M1 processor, the scene starts to slow down to 1 fps and less. Any other render/shading on the M1 is faster than on the Intel Mac. As far as I understand, the issue is only with Apple silicon processors.

Checked and works well on:
MacBook 13 2015
Operating system: macOS-10.15.7-x86_64-i386-64bit 64 Bits
Graphics card: Intel(R) Iris(TM) Graphics 6100 Intel Inc. 4.1 INTEL-14.7.8

Blender Version
2.93.6 Release Candidate, branch: master, commit date: 2021-11-10 09:31, hash: fa99d3e53b

Yes, this is a regression. I checked it on my old **MacBook 13 2015** and this project, with shadow enabled in Solid mode, does not slow down. And on the new M1 processor, the scene starts to slow down to 1 fps and less. Any other render/shading on the M1 is faster than on the **Intel Mac**. As far as I understand, the issue is only with **Apple silicon** processors. **Checked and works well on:** MacBook 13 2015 Operating system: macOS-10.15.7-x86_64-i386-64bit 64 Bits Graphics card: Intel(R) Iris(TM) Graphics 6100 Intel Inc. 4.1 INTEL-14.7.8 **Blender Version** 2.93.6 Release Candidate, branch: master, commit date: 2021-11-10 09:31, hash: fa99d3e53b

Wouter Stomp commented

2021-11-15 23:01:41 +01:00

Added subscriber: @blenderrocket

Wouter Stomp commented

2021-11-15 23:01:41 +01:00

I can confirm this, performance is much slower than expected, much worse than material preview and rendered mode.

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

Blender Version
Broken: version: 3.0.0 Beta, branch: master, commit date: 2021-11-11 18:49, hash: bd734cc441

I can confirm this, performance is much slower than expected, much worse than material preview and rendered mode. Operating system: macOS-12.0.1-arm64-arm-64bit 64 Bits Graphics card: Apple M1 Max Apple 4.1 Metal - 76.1 **Blender Version** Broken: version: 3.0.0 Beta, branch: master, commit date: 2021-11-11 18:49, hash: `bd734cc441`

Hans Goudey commented

2021-11-16 18:15:01 +01:00

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

Hans Goudey commented

2021-11-16 18:15:02 +01:00

Okay, I can't confirm this without Apple hardware, I'll leave that to someone else. Thanks for the details though.

Germano Cavalcante commented

2021-11-22 20:17:59 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-11-22 20:17:59 +01:00

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

Germano Cavalcante commented

2021-11-22 20:17:59 +01:00

I confirm an abnormal lag, triggered by the shadows.
Tested in previous versions, the problem also appears in 2.92. So it's not a regression.
It looks like something that only happens on macs with ARM processors.

I confirm an abnormal lag, triggered by the shadows. Tested in previous versions, the problem also appears in 2.92. So it's not a regression. It looks like something that only happens on macs with ARM processors.

hujin commented

2021-12-16 19:50:36 +01:00

Added subscriber: @2046411367

Henris commented

2022-05-25 17:17:22 +02:00

Added subscriber: @HenrisKas

Henris commented

2022-05-25 17:17:22 +02:00

Second that - Shadows are killing performance in solid view (on M1) - it's more responsive in eevee rendered view than solid with shadows on. (3.1.0)

Jeroen Bakker commented

2022-05-25 17:52:01 +02:00

Added subscriber: @Jeroen-Bakker

Jeroen Bakker commented

2022-05-25 17:52:01 +02:00

Changed status from 'Confirmed' to: 'Archived'

Jeroen Bakker closed this issue

2022-05-25 17:52:01 +02:00

Jeroen Bakker commented

2022-05-25 17:52:02 +02:00

The GPU on the M1 is optimized for small shaders and pipelines. After stress testing it is easy to detect limitations of the hardware.
The Solid shadows are expensive, but optimizing it (implement something different) should not be considered a bug.
There are ideas to replace it in the near future, but has no date yet.

Will close this report as it is a limitation inside the hardware.

The GPU on the M1 is optimized for small shaders and pipelines. After stress testing it is easy to detect limitations of the hardware. The Solid shadows are expensive, but optimizing it (implement something different) should not be considered a bug. There are ideas to replace it in the near future, but has no date yet. Will close this report as it is a limitation inside the hardware.

Jeroen Bakker commented

2022-05-25 17:52:24 +02:00

Changed status from 'Archived' to: 'Confirmed'

Jeroen Bakker reopened this issue

2022-05-25 17:52:24 +02:00

Pratik Borhade commented

2022-07-27 08:37:58 +02:00

Added subscribers: @Louis-Lou, @PratikPB2123

Wouter Stomp commented

2022-12-21 22:25:50 +01:00

Seems to be fixed with the metal backend.

Hans Goudey commented

2022-12-22 16:04:58 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Hans Goudey closed this issue

2022-12-22 16:04:58 +01:00

Hans Goudey self-assigned this 2022-12-22 16:04:58 +01:00

Hans Goudey commented

2022-12-22 16:04:58 +01:00

Thanks for testing @wouterstomp. I'll close this issue because of that, and because I've seen plans to rework the shadow implementation for the next version of the workbench engine.

EDIT: Oops, didn't see this was already archived. Either way, "Resolved" seems fine now.

Thanks for testing @wouterstomp. I'll close this issue because of that, and because I've seen plans to rework the shadow implementation for the next version of the workbench engine. EDIT: Oops, didn't see this was already archived. Either way, "Resolved" seems fine now.

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M1 Solid Shadow slows down #93073