Amaranth add-on generates Python errors due to removal of branched path #92334

New Issue

Johannes Jakob · 2021-10-19T09:53:26+02:00

Johannes Jakob commented

2021-10-19 09:53:26 +02:00

System Information
Operating system: macOS 11.6 Big Sur
Graphics card: AMD Radeon Pro 560 4 GB

Blender Version
Broken: 3.0, d7b231baa87e, master, 2021-10-18

Short description of error
On macOS – which does not support GPU rendering on AMD graphics cards currently – the render device dropdown menu and the Open Shading Language toggle disappear when selecting “GPU Compute”. Blender has to be relaunched in order to get them back.

Blender_3.0_macOS-Render_Device_Dropdown.mov

**System Information** Operating system: macOS 11.6 Big Sur Graphics card: AMD Radeon Pro 560 4 GB **Blender Version** Broken: 3.0, d7b231baa87e, master, 2021-10-18 **Short description of error** On macOS – which does not support GPU rendering on AMD graphics cards currently – the render device dropdown menu and the Open Shading Language toggle disappear when selecting “GPU Compute”. Blender has to be relaunched in order to get them back. [Blender_3.0_macOS-Render_Device_Dropdown.mov](https://archive.blender.org/developer/F11277701/Blender_3.0_macOS-Render_Device_Dropdown.mov)

Johannes Jakob commented

2021-10-19 09:53:26 +02:00

Added subscriber: @johjakob-3

Johannes Jakob commented

2021-10-19 19:59:13 +02:00

The render device dropdown and Open Shading Language toggle can be brought back by undoing the render device selection.

Germano Cavalcante commented

2021-10-25 03:03:12 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-10-25 03:03:12 +02:00

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

Germano Cavalcante commented

2021-10-25 03:03:12 +02:00

It seems to be a very specific problem. I can't replicate it on a Mac M1.

Can you open the blender via the terminal? https://docs.blender.org/manual/en/latest/advanced/command_line/launch/macos.html

The terminal will display some error information that might be useful in this case.

It seems to be a very specific problem. I can't replicate it on a Mac M1. Can you open the blender via the terminal? https://docs.blender.org/manual/en/latest/advanced/command_line/launch/macos.html The terminal will display some error information that might be useful in this case.

Ankit Meel commented

2021-10-25 06:34:02 +02:00

Added subscriber: @ankitm

Ankit Meel commented

2021-10-25 06:34:02 +02:00

Can't redo on blender/blender@3e75f70acd, Big Sur, intel either. Try a recent build.
Also, could be some addon.
Try restarting Blender after renaming ~/Library/Application Support/Blender to something else, and if the issue goes away, narrow down the cause by elimination.

Can't redo on blender/blender@3e75f70acd, Big Sur, intel either. Try a recent build. Also, could be some addon. Try restarting Blender after renaming `~/Library/Application Support/Blender` to something else, and if the issue goes away, narrow down the cause by elimination.

Johannes Jakob commented

2021-10-25 13:12:02 +02:00

In #92334#1240514, @ankitm wrote:
Can't redo on blender/blender@3e75f70acd, Big Sur, intel either. Try a recent build.
Also, could be some addon.
Try restarting Blender after renaming ~/Library/Application Support/Blender to something else, and if the issue goes away, narrow down the cause by elimination.

Yes, you are right. It must be an add-on. I will try to narrow it down by disabling third-party add-ons.

> In #92334#1240514, @ankitm wrote: > Can't redo on blender/blender@3e75f70acd, Big Sur, intel either. Try a recent build. > Also, could be some addon. > Try restarting Blender after renaming `~/Library/Application Support/Blender` to something else, and if the issue goes away, narrow down the cause by elimination. Yes, you are right. It must be an add-on. I will try to narrow it down by disabling third-party add-ons.

Brecht Van Lommel commented

2021-10-25 13:18:40 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2021-10-25 13:18:40 +02:00

Getting the terminal output as requested by @mano-wii would be most useful here.

Johannes Jakob commented

2021-10-25 13:23:25 +02:00

In #92334#1240422, @mano-wii wrote:
It seems to be a very specific problem. I can't replicate it on a Mac M1.

Can you open the blender via the terminal? https://docs.blender.org/manual/en/latest/advanced/command_line/launch/macos.html

The terminal will display some error information that might be useful in this case.

This was my Terminal output when the issue occured:

WARN (bpy.rna): source/blender/python/intern/bpy_rna.c:1352 pyrna_enum_to_py: current value '2' matches no enum in 'CyclesPreferences', '(null)', 'compute_device_type'
Traceback (most recent call last):
  File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/modules/bpy_types.py", line 825, in draw_ls
    func(self, context)
  File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/cycles/ui.py", line 2037, in draw_device
    col.active = show_device_active(context)
  File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/cycles/ui.py", line 127, in show_device_active
    return context.preferences.addons[__package__].preferences.has_active_device()
  File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/cycles/properties.py", line 1363, in has_active_device
    return self.get_num_gpu_devices() > 0
  File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/cycles/properties.py", line 1352, in get_num_gpu_devices
    device_list = _cycles.available_devices(self.compute_device_type)
ValueError: Device "" not known.
Traceback (most recent call last):
  File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/modules/bpy_types.py", line 825, in draw_ls
    func(self, context)
  File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/amaranth/render/samples_scene.py", line 107, in render_cycles_scene_samples
    if utils.cycles_exists() and cscene.progressive == "BRANCHED_PATH":
AttributeError: 'CyclesRenderSettings' object has no attribute 'progressive'

I resolved it by disabling and re-enabling the Cycles Render Engine add-on in the preferences. It looks like it was an issue with old Cycles settings maybe (BRANCHED_PATH)?

> In #92334#1240422, @mano-wii wrote: > It seems to be a very specific problem. I can't replicate it on a Mac M1. > > Can you open the blender via the terminal? https://docs.blender.org/manual/en/latest/advanced/command_line/launch/macos.html > > The terminal will display some error information that might be useful in this case. This was my Terminal output when the issue occured: ``` WARN (bpy.rna): source/blender/python/intern/bpy_rna.c:1352 pyrna_enum_to_py: current value '2' matches no enum in 'CyclesPreferences', '(null)', 'compute_device_type' Traceback (most recent call last): File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/modules/bpy_types.py", line 825, in draw_ls func(self, context) File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/cycles/ui.py", line 2037, in draw_device col.active = show_device_active(context) File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/cycles/ui.py", line 127, in show_device_active return context.preferences.addons[__package__].preferences.has_active_device() File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/cycles/properties.py", line 1363, in has_active_device return self.get_num_gpu_devices() > 0 File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/cycles/properties.py", line 1352, in get_num_gpu_devices device_list = _cycles.available_devices(self.compute_device_type) ValueError: Device "" not known. Traceback (most recent call last): File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/modules/bpy_types.py", line 825, in draw_ls func(self, context) File "/Applications/Blender 3.0 Alpha/Blender.app/Contents/Resources/3.0/scripts/addons/amaranth/render/samples_scene.py", line 107, in render_cycles_scene_samples if utils.cycles_exists() and cscene.progressive == "BRANCHED_PATH": AttributeError: 'CyclesRenderSettings' object has no attribute 'progressive' ``` I resolved it by disabling and re-enabling the Cycles Render Engine add-on in the preferences. It looks like it was an issue with old Cycles settings maybe (`BRANCHED_PATH`)?

Brecht Van Lommel changed title from ~~macOS: Render device dropdown disappears when selecting “GPU Compute”~~ to Amaranth add-on generates Python errors due to removal of branched path

2021-10-25 14:16:58 +02:00

Brecht Van Lommel commented

2021-10-25 14:16:58 +02:00

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