Cycles Render Light Paths #89199

New Issue

Martin · 2021-06-16T15:09:15+02:00

Martin commented

2021-06-16 15:09:15 +02:00

System Information
Operating system: Windows 10
Graphics card: Intel UHD Graphics 620

Blender Version
Broken: 2.93
Worked: Not Known

Short description of error
Render Properties/Light Paths/New Preset
Create a new preset results in the following error message:
Error Message: Python: Traceback (most recent call last): File: "C:\Program Files\Blender Foundation\Blender 2.93\2.92\scripts\startup\bl_operators\presets.py" line 171, in execute value=eval(rna_path) Files ", line 1, in AttributeError: 'CylesREnderSettings' object has not attribute 'blur_glossycycles' location:
Following which the New Preset is not set.

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

**System Information** Operating system: Windows 10 Graphics card: Intel UHD Graphics 620 **Blender Version** Broken: 2.93 Worked: Not Known **Short description of error** Render Properties/Light Paths/New Preset Create a new preset results in the following error message: Error Message: Python: Traceback (most recent call last): File: "C:\Program Files\Blender Foundation\Blender 2.93\2.92\scripts\startup\bl_operators\presets.py" line 171, in execute value=eval(rna_path) Files "<string>, line 1, in <module> AttributeError: 'CylesREnderSettings' object has not attribute 'blur_glossycycles' location: <unknown> Following which the New Preset is not set. **Exact steps for others to reproduce the error** Based on the default startup or an attached .blend file (as simple as possible).

Martin commented

2021-06-16 15:09:15 +02:00

Added subscriber: @CornishGrandad

Pratik Borhade commented

2021-06-16 18:20:27 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-06-16 18:20:27 +02:00

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

Pratik Borhade commented

2021-06-16 18:20:27 +02:00

Can confirm. Will bisect that or may be I will try to find solution shortly. (Can replicate in 2.93.0LTS and also with 3.0.0)

Riccardo Giovanetti commented

2021-06-16 18:58:47 +02:00

Added subscriber: @Harvester

Riccardo Giovanetti commented

2021-06-16 18:58:47 +02:00

Here on:
System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 462.59

Blender Version
2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: 84da05a8b8

I can replicate the issue, and I get the same error message related to the attribute "blur_glossycycles" not available for the "CyclesRenderSettings".

Writing Preset: 'D:\Blender_2.93_stable\2.93\scripts\presets\cycles/integrator\TEST_PRESET.py'
Python: Traceback (most recent call last):

File "D:\Blender_2.93_stable\2.93\scripts\startup\bl_operators\presets.py", line 171, in execute
  value = eval(rna_path)
File "<string>", line 1, in <module>

AttributeError: 'CyclesRenderSettings' object has no attribute 'blur_glossycycles'

In effect, the full datapath of the Filter Glossy option is: bpy.data.scenes["Scene"].cycles.blur_glossy.

Furthermore, despite the above error message, the preset is saved but selecting it doesn't seems to work (non changes in the attributes), and I cannot delete it getting this error message, even after having selected another preset in the list:

Traceback (most recent call last):

File "D:\Blender_2.93_stable\2.93\scripts\startup\bl_operators\presets.py", line 205, in execute
  os.remove(filepath)

PermissionError: [WinError 32] Impossibile accedere al file. Il file è utilizzato da un altro processo: 'D:\Blender_2.93_stable\2.93\scripts\presets\cycles/integrator\TEST_PRESET.py'

The message says that the file is being used by another process and it cannot be accessed or deleted in this case. To be able to delete that preset I had to close and restart Blender, then I can delete it.

Here on: **System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 462.59 **Blender Version** 2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: `84da05a8b8` I can replicate the issue, and I get the same error message related to the attribute "blur_glossycycles" not available for the "CyclesRenderSettings". Writing Preset: 'D:\\Blender_2.93_stable\\2.93\\scripts\\presets\\cycles/integrator\\TEST_PRESET.py' Python: Traceback (most recent call last): ``` File "D:\Blender_2.93_stable\2.93\scripts\startup\bl_operators\presets.py", line 171, in execute value = eval(rna_path) File "<string>", line 1, in <module> ``` AttributeError: 'CyclesRenderSettings' object has no attribute 'blur_glossycycles' In effect, the full datapath of the Filter Glossy option is: bpy.data.scenes["Scene"].cycles.blur_glossy. Furthermore, despite the above error message, the preset is saved but selecting it doesn't seems to work (non changes in the attributes), and I cannot delete it getting this error message, even after having selected another preset in the list: Traceback (most recent call last): ``` File "D:\Blender_2.93_stable\2.93\scripts\startup\bl_operators\presets.py", line 205, in execute os.remove(filepath) ``` PermissionError: [WinError 32] Impossibile accedere al file. Il file è utilizzato da un altro processo: 'D:\\Blender_2.93_stable\\2.93\\scripts\\presets\\cycles/integrator\\TEST_PRESET.py' The message says that the file is being used by another process and it cannot be accessed or deleted in this case. To be able to delete that preset I had to close and restart Blender, then I can delete it.

Riccardo Giovanetti commented

2022-01-29 10:59:59 +01:00

Just a brief update. While this issue is still present in 2.93.7 LTS (and possibly 2.93.8), it's no longer happening in version 3.0.1, nor in 3.1 Alpha, and neither in 3.2 Alpha.