Render baking panel disappears when GPU rendering and OptiX are enabled. #76898

New Issue

Paul R · 2020-05-20T01:57:53+02:00

Paul R commented

2020-05-20 01:57:53 +02:00

System Information
Operating system: SUSE Leap 15.1
Graphics card: NVidia RTX 2070 Super (official drivers)

Blender Version
Broken: 2.83 beta, ff7a30d928, x86_64 linux, 2020-05-18 (buildbot)
Worked: 2.80 (broken since 2.81 when OptiX support added)

Short description of error
Cycles render baking panel is not visible with GPU rendering if OptiX is enabled in the user prefs. Issue first appeared in 2.81 when OptiX support was added.

Exact steps for others to reproduce the error

switch to Cycles
set GPU render mode
user prefs->system->enable OptiX
bake panel disappears.

**System Information** Operating system: SUSE Leap 15.1 Graphics card: NVidia RTX 2070 Super (official drivers) **Blender Version** Broken: 2.83 beta, ff7a30d92884, x86_64 linux, 2020-05-18 (buildbot) Worked: 2.80 (broken since 2.81 when OptiX support added) **Short description of error** Cycles render baking panel is not visible with GPU rendering if OptiX is enabled in the user prefs. Issue first appeared in 2.81 when OptiX support was added. **Exact steps for others to reproduce the error** - switch to Cycles - set GPU render mode - user prefs->system->enable OptiX - bake panel disappears.

Paul R commented

2020-05-20 01:57:53 +02:00

Added subscriber: @intracube

Brecht Van Lommel commented

2020-05-20 02:43:16 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2020-05-20 02:43:16 +02:00

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

Brecht Van Lommel closed this issue

2020-05-20 02:43:16 +02:00

Brecht Van Lommel self-assigned this 2020-05-20 02:43:16 +02:00

Brecht Van Lommel commented

2020-05-20 02:43:16 +02:00

Optix does not support baking yet:
https://docs.blender.org/manual/en/dev/render/cycles/gpu_rendering.html#supported-features-and-limitations

Optix does not support baking yet: https://docs.blender.org/manual/en/dev/render/cycles/gpu_rendering.html#supported-features-and-limitations

Paul R commented

2020-05-20 03:11:39 +02:00

In #76898#935115, @brecht wrote:
Optix does not support baking yet:
https://docs.blender.org/manual/en/dev/render/cycles/gpu_rendering.html#supported-features-and-limitations

Hasn't Cycles baking always been CPU bound? That still seems to be the case.

Without OptiX set but with GPU enabled, the panel -is- visible even though it isn't making use of the GPU (from looking at the process table). So this is inconsistent.

> In #76898#935115, @brecht wrote: > Optix does not support baking yet: > https://docs.blender.org/manual/en/dev/render/cycles/gpu_rendering.html#supported-features-and-limitations Hasn't Cycles baking always been CPU bound? That still seems to be the case. Without OptiX set but with GPU enabled, the panel -is- visible even though it isn't making use of the GPU (from looking at the process table). So this is inconsistent.

Brecht Van Lommel commented

2020-05-20 03:14:04 +02:00

Baking does use the GPU.

Paul R commented

2020-05-20 04:09:18 +02:00

Apologies,

I monitored the CPU table and saw it pegged at 100% so thought the baking was running single-threaded. GPU fans didn't speed up so I assumed no activity there.

For discoverability, having the bake panel stay visible but greyed out with a message would be helpful. I spent some time searching through sub panels thinking bake had been moved as part of reorganisation. It took longer to realise it was OptiX dependant.

I know this isn't the place for UI discussion, so I'll leave this here and take it to devtalk:

Apologies, I monitored the CPU table and saw it pegged at 100% so thought the baking was running single-threaded. GPU fans didn't speed up so I assumed no activity there. For discoverability, having the bake panel stay visible but greyed out with a message would be helpful. I spent some time searching through sub panels thinking bake had been moved as part of reorganisation. It took longer to realise it was OptiX dependant. I know this isn't the place for UI discussion, so I'll leave this here and take it to devtalk: ![optix_unsupported.png](https://archive.blender.org/developer/F8544148/optix_unsupported.png)

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Render baking panel disappears when GPU rendering and OptiX are enabled. #76898