Custom render engine is unable to create gpu context #104061

New Issue

Alexander Samsonov · 2023-01-22T12:01:56+01:00

2023-01-22 12:01:56 +01:00

System Information
Operating system: Linux-5.19.17-2-MANJARO-x86_64-with-glibc2.36 64 Bits
Graphics card: AMD Radeon Graphics (renoir, LLVM 14.0.6, DRM 3.47, 5.19.17-2-MANJARO) AMD 4.6 (Core Profile) Mesa 22.3.1

Blender Version
Broken: version: 3.5.0 Alpha, branch: master, commit date: 2022-12-18 20:06, hash: 50c7eb14f4
Worked: Blender 3.4

Short description of error
Unable to perform background rendering using gpu module in custom render engine.

Exact steps for others to reproduce the error
Run the script in background mode: blender -b -P background-gpu.py. Blender throws: SystemError: GPU API is not available in background mode, despite the line bl_use_gpu_context = True in custom render engine. Worked perfectly fine in blender 3.3 and 3.4. Not in 3.5 though.
background-gpu.py

**System Information** Operating system: Linux-5.19.17-2-MANJARO-x86_64-with-glibc2.36 64 Bits Graphics card: AMD Radeon Graphics (renoir, LLVM 14.0.6, DRM 3.47, 5.19.17-2-MANJARO) AMD 4.6 (Core Profile) Mesa 22.3.1 **Blender Version** Broken: version: 3.5.0 Alpha, branch: master, commit date: 2022-12-18 20:06, hash: `50c7eb14f4` Worked: Blender 3.4 **Short description of error** Unable to perform background rendering using `gpu` module in custom render engine. **Exact steps for others to reproduce the error** Run the script in background mode: `blender -b -P background-gpu.py`. Blender throws: `SystemError: GPU API is not available in background mode`, despite the line `bl_use_gpu_context = True` in custom render engine. Worked perfectly fine in blender 3.3 and 3.4. Not in 3.5 though. [background-gpu.py](https://archive.blender.org/developer/F14183192/background-gpu.py)

Alexander Samsonov commented

2023-01-22 12:01:56 +01:00

Added subscriber: @blendersamsonov

Iliya Katushenock commented

2023-01-22 12:24:28 +01:00

Added subscriber: @mod_moder

Iliya Katushenock commented

2023-01-22 12:24:28 +01:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Iliya Katushenock commented

2023-01-22 12:24:28 +01:00

blender "C:\Users\rfnei\Downloads\ssdvzd.blend" -b -P "C:\Users\rfnei\Downloads\background-gpu.py"
Blender 3.5.0 Alpha (hash 962c3cf6b190 built 2023-01-17 02:31:29)
Read prefs: C:\Users\rfnei\AppData\Roaming\Blender Foundation\Blender\3.5\config\userpref.blend
Read blend: C:\Users\rfnei\Downloads\ssdvzd.blend
Error: Python: Traceback (most recent call last):
  File "C:\Users\rfnei\Downloads\background-gpu.py", line 30, in render
    GPUShader(vert_shader, frag_shader)
SystemError: GPU API is not available in background mode
Location: F:\╨Ф╨╕╤Б╨║ I\programm\blenders\╤Б╨▓╨╡╨╢╨░╨║ 24-15-31\3.5\scripts\modules\bpy\ops.py:111
Traceback (most recent call last):
  File "C:\Users\rfnei\Downloads\background-gpu.py", line 30, in render
    GPUShader(vert_shader, frag_shader)
SystemError: GPU API is not available in background mode

Can confirm report

``` blender "C:\Users\rfnei\Downloads\ssdvzd.blend" -b -P "C:\Users\rfnei\Downloads\background-gpu.py" Blender 3.5.0 Alpha (hash 962c3cf6b190 built 2023-01-17 02:31:29) Read prefs: C:\Users\rfnei\AppData\Roaming\Blender Foundation\Blender\3.5\config\userpref.blend Read blend: C:\Users\rfnei\Downloads\ssdvzd.blend Error: Python: Traceback (most recent call last): File "C:\Users\rfnei\Downloads\background-gpu.py", line 30, in render GPUShader(vert_shader, frag_shader) SystemError: GPU API is not available in background mode Location: F:\╨Ф╨╕╤Б╨║ I\programm\blenders\╤Б╨▓╨╡╨╢╨░╨║ 24-15-31\3.5\scripts\modules\bpy\ops.py:111 Traceback (most recent call last): File "C:\Users\rfnei\Downloads\background-gpu.py", line 30, in render GPUShader(vert_shader, frag_shader) SystemError: GPU API is not available in background mode ``` Can confirm report

Michael Parkin-White commented

2023-01-23 14:29:17 +01:00

Added subscriber: @Michael-Parkin-White-Apple

Brecht Van Lommel added

and removed