Grey viewport in Interactive render mode

[mobilex1122]

Issue

When i switch to interactive mode it does not start. Instead of render i see gray (blender viewport color) viewport.

Steps to Reproduce

1. Switch render quality to interactive
2. Switch to render view
3. See gray viewport and python error message in terminal.

System Setup (Environment)

OS: Arch or windows 11 (I use both) GPU: AMD Radeon RX 6600 (Latest driver on windows) Blender version: 3.4 Mostly using GPU rendering

Detailed Description

Error message:

2022-12-20 17:54:04,707 ERROR rpr.init [140593525411840]:  RPR call ContextSetParameterByKeyString(<pyhybridpro.Context object at 0x7fde41ee7f70>, 369, b'/usr/bin/3.4/datafiles/colormanagement/config.ocio') returned error code <-18> with error message: '' EXCEPTION: Traceback (most recent call last):
  File "/home/mobilex/.config/blender/3.4/scripts/addons/rprblender/__init__.py", line 168, in view_update
    self.engine.sync(context, depsgraph)
  File "/home/mobilex/.config/blender/3.4/scripts/addons/rprblender/engine/viewport_engine_hybridpro.py", line 49, in sync
    super().sync(context, depsgraph)
  File "/home/mobilex/.config/blender/3.4/scripts/addons/rprblender/engine/viewport_engine.py", line 482, in sync
    scene.rpr.init_rpr_context(self.rpr_context, is_final_engine=False,
  File "/home/mobilex/.config/blender/3.4/scripts/addons/rprblender/properties/render.py", line 615, in init_rpr_context
    rpr_context.set_parameter(pyrpr.CONTEXT_OCIO_CONFIG_PATH, ocio_config_path)
  File "/home/mobilex/.config/blender/3.4/scripts/addons/rprblender/engine/context.py", line 534, in set_parameter
    self.context.set_parameter(key, param)
  File "/home/mobilex/.config/blender/3.4/scripts/addons/rprblender/pyhybridpro.py", line 46, in wrapper
    return function(*args, **kwargs)
  File "/home/mobilex/.config/blender/3.4/scripts/addons/rprblender/pyhybridpro.py", line 85, in set_parameter
    super().set_parameter(key, param)
  File "/home/mobilex/.config/blender/3.4/scripts/addons/rprblender/pyrpr.py", line 270, in set_parameter
    ContextSetParameterByKeyString(self, key, encode(param))
  File "/home/mobilex/.config/blender/3.4/scripts/addons/rprblender/pyrpr.py", line 74, in wrapped
    raise CoreError(status, f.__name__, argv, module_name)
pyrpr.CoreError: RPR call ContextSetParameterByKeyString(<pyhybridpro.Context object at 0x7fde41ee7f70>, 369, b'/usr/bin/3.4/datafiles/colormanagement/config.ocio') returned error code <-18> with error message: ''

[bsavery]

Which plugin version do you have?

[mobilex1122]

Which plugin version do you have?

The latest one (3.5.0)

[mobilex1122]

I'm getting the same grey (blender viewport) color when performing a viewport render.

• macOS Monterey 12.6.2
• RPRForBlenderMacos 3.5.0
• AMD Radeon 5700xt
• Blender 3.4 It performs a partial render, pauses for a moment, then the render is covered by several grey squares.

https://user-images.githubusercontent.com/36450865/211219337-6c11259b-6ca5-4fb1-b698-4beb27f7e04f.mov

I have little diferent one. for me it's gray form the start.

[Vinnyemath]

Same as OP, disabling denoising is a workaround for now. (at least for me)

[kintuX]

Confirming. This issue is still present in latest RPR dev. build v3.5.21