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MetalRT: Rendering being unresponsive with AO node #109899

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opened 2023-07-10 11:49:09 +02:00 by sz · 13 comments
sz commented 2023-07-10 11:49:09 +02:00
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System Information
Operating system: Ventura 13.4.1
Graphics card: Apple M1 Max 32 Core

Blender Version
Broken: Blender 3.6 LTS
Worked: Blender 3.5.1

Short description of error
After downloading the newest Version of Blender it seems that using the Ambient Occlusion Node need leads to Blender being unresponsive. Sample count stays on 0 and neither Viewport nor F12 Render is starting as expected. Trying to quit, Blender crashes completely.

Exact steps for others to reproduce the error

  • Add new material
  • Add Ambient Occlusion Node
  • Select cycles and GPU
  • Enable MetalRT
  • Start Viewport Rendering.
**System Information** Operating system: Ventura 13.4.1 Graphics card: Apple M1 Max 32 Core **Blender Version** Broken: Blender 3.6 LTS Worked: Blender 3.5.1 **Short description of error** After downloading the newest Version of Blender it seems that using the Ambient Occlusion Node need leads to Blender being unresponsive. Sample count stays on 0 and neither Viewport nor F12 Render is starting as expected. Trying to quit, Blender crashes completely. **Exact steps for others to reproduce the error** - Add new material - Add Ambient Occlusion Node - Select cycles and GPU - Enable MetalRT - Start Viewport Rendering.
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Michael Parkin-White commented 2023-07-10 16:08:13 +02:00
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Thank you for the report, could you please confirm if this is happening in Cycles or EEVEE?

Thank you for the report, could you please confirm if this is happening in Cycles or EEVEE?
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 labels 2023-07-10 16:19:48 +02:00
YimingWu commented 2023-07-10 16:22:56 +02:00
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Hi @sz , Could you try switch the graphics backend to OpenGL in the user preference and see if that makes any difference?

Hi @sz , Could you try switch the graphics backend to `OpenGL` in the user preference and see if that makes any difference?
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 labels 2023-07-10 16:23:05 +02:00
sz commented 2023-07-10 19:19:23 +02:00
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Hi, it's happening in Cycles. I don't use EEVEE that much, so I can't tell if EEVEE has the same problem. Switching to OpenGL evokes the same error. I also tried to give Blender more time for the process, but after half an hour still stuck on 0 - Rendering doesn't start.

Hi, it's happening in Cycles. I don't use EEVEE that much, so I can't tell if EEVEE has the same problem. Switching to OpenGL evokes the same error. I also tried to give Blender more time for the process, but after half an hour still stuck on 0 - Rendering doesn't start.
sz commented 2023-07-10 19:22:16 +02:00
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Geometry is just black. Screenshot attached.

Geometry is just black. Screenshot attached.
Bildschirmfoto 2023-07-10 um 19.21.09.png
1.6 MiB
Bildschirmfoto 2023-07-10 um 19.21.09.png
Michael Parkin-White commented 2023-07-11 12:40:08 +02:00
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Thanks, will point this in the direction of @Michael-Jones.

Thanks, will point this in the direction of @Michael-Jones.
Michael Jones (Apple) commented 2023-07-11 12:58:50 +02:00
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Hey @sz . I wasn't able to reproduce this on the latest Blender 3.6.1 RC on a M1 Max 32 Core running on Sonoma / 14 beta (test .blend scene attached):

image

On first render it can take a minute or so to build the render kernels, particularly if "AO" or "Bevel" nodes are used in a scene. Assuming it's not a case of waiting a bit longer and you're able to update to a macOS 14 beta build, then that would be a useful datapoint.

Hey @sz . I wasn't able to reproduce this on the latest Blender 3.6.1 RC on a M1 Max 32 Core running on Sonoma / 14 beta (test .blend scene attached): ![image](/attachments/b6eac43d-e9a0-4552-8179-8319cea71c45) On first render it can take a minute or so to build the render kernels, particularly if "AO" or "Bevel" nodes are used in a scene. Assuming it's not a case of waiting a bit longer and you're able to update to a macOS 14 beta build, then that would be a useful datapoint.
image.png
1.4 MiB
AO_monkey.blend
972 KiB
sz commented 2023-07-11 14:26:45 +02:00
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Hi @Michael-Jones, unfortunately I'm not able to try macOS 14 Beta at the moment. I tried 3.6.1 RC on macOS 13, but the problem still exists. For now I will stick to 3.5.1, but would love to switch to 3.6.1- if it’s working as expected.

Hi @Michael-Jones, unfortunately I'm not able to try macOS 14 Beta at the moment. I tried 3.6.1 RC on macOS 13, but the problem still exists. For now I will stick to 3.5.1, but would love to switch to 3.6.1- if it’s working as expected.
sz commented 2023-07-11 16:24:06 +02:00
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Just found out that if I switch from GPU to CPU in Scene, Device - it work's, but missing the GPU Speed of course. So the problem seems to be related to GPU somehow. Also tried on a Mac Studio M1 with Factory Settings in Blender and Problem was exactly the same.

Just found out that if I switch from GPU to CPU in Scene, Device - it work's, but missing the GPU Speed of course. So the problem seems to be related to GPU somehow. Also tried on a Mac Studio M1 with Factory Settings in Blender and Problem was exactly the same.
sz commented 2023-07-18 15:50:52 +02:00
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Anyone any ideas how to fix this?

Anyone any ideas how to fix this?
Kristofer Älvring commented 2023-08-25 09:38:32 +02:00
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I'm encountering the same issues. CPU works but it crashes when AO + GPU + Viewport is used. However, if I render the image it kind of works. The AO output is weird but it doesn't crash.
Apple M1 Pro 16GB, Ventura 13.4

I'm encountering the same issues. CPU works but it crashes when AO + GPU + Viewport is used. However, if I render the image it kind of works. The AO output is weird but it doesn't crash. Apple M1 Pro 16GB, Ventura 13.4
sz commented 2023-08-25 12:46:02 +02:00
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In 3.6.3 RC if Metal RT is disabled und Render Device ist set to only GPU not CPU+GPU it works. AO renders in Viewport and actual Rendering. Result is as expected (same as it was in 3.5.1). Maybe this helps.

In 3.6.3 RC if Metal RT is disabled und Render Device ist set to only GPU not CPU+GPU it works. AO renders in Viewport and actual Rendering. Result is as expected (same as it was in 3.5.1). Maybe this helps.
Pratik Borhade commented 2023-08-30 11:13:36 +02:00
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Similar bug has been observed on Windows + NVIDIA too: #102162

Similar bug has been observed on Windows + NVIDIA too: #102162
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Pratik Borhade commented 2023-09-15 06:51:07 +02:00
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In 3.6.3 RC if Metal RT is disabled und Render Device ist set to only GPU not CPU+GPU it works

It seems MetalRT is still experimental so render time might be greater in some cases: https://projects.blender.org/blender/blender/src/branch/main/intern/cycles/blender/addon/properties.py#L1476
@Michael-Jones , can you confirm with this preference enabled?

> In 3.6.3 RC if Metal RT is disabled und Render Device ist set to only GPU not CPU+GPU it works It seems MetalRT is still experimental so render time might be greater in some cases: https://projects.blender.org/blender/blender/src/branch/main/intern/cycles/blender/addon/properties.py#L1476 @Michael-Jones , can you confirm with this preference enabled?
Pratik Borhade changed title from Blender 3.6 on Macbook Pro M1 to MetalRT: Rendering being unresponsive with AO node 2023-09-15 06:54:42 +02:00
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