Cycles new adaptive sampling causes wrong progress bar for the render process #74504

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opened 2020-03-06 16:56:52 +01:00 by Axel Bechstein · 17 comments

Axel Bechstein commented

2020-03-06 16:56:52 +01:00

System Information
Operating system: Windows
Graphics card: GeForce GTX 960/PCIe/SSE2

Blender Version
Broken: 2.83 (sub 6), branch: master, commit date: 2020-03-06 10:05, hash: 7d9a5b7b10, type: Release
Worked: this is the first version with adaptive sampling

Short description of error
with the new adaptive sampling enabled the percentage of the rendering progress bar is most of the time to low
even when the rendering has nearly finished the render it shows just 20% for example

**System Information** Operating system: Windows Graphics card: GeForce GTX 960/PCIe/SSE2 **Blender Version** Broken: 2.83 (sub 6), branch: master, commit date: 2020-03-06 10:05, hash: 7d9a5b7b10b4, type: Release Worked: this is the first version with adaptive sampling **Short description of error** with the new adaptive sampling enabled the percentage of the rendering progress bar is most of the time to low even when the rendering has nearly finished the render it shows just 20% for example

Axel Bechstein commented

2020-03-06 16:56:52 +01:00

Author

Added subscriber: @Unreleased75

Added subscriber: @Unreleased75

Ankit Meel commented

2020-03-06 18:22:56 +01:00

Member

Added subscriber: @ankitm

Added subscriber: @ankitm

Ankit Meel commented

2020-03-06 18:22:56 +01:00

Member

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

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

Ankit Meel commented

2020-03-06 18:22:56 +01:00

Member

Please add a sample file & steps to redo the bug

Please add a sample file & steps to redo the bug

Axel Bechstein commented

2020-03-06 22:26:57 +01:00

Author

With this scene the render progress bar goes never to 100%. (At least on my machine.)

With this settings the progress bar goes never over 14%
Adaptive Min Samples: 1
Adaptive Threshold: 0.01

With this settings the progress bar goes never over 51%
Adaptive Min Samples: 0 (default)
Adaptive Threshold: 0.0 (default)

cycles_adaptive.blend

With this scene the render progress bar goes never to 100%. (At least on my machine.) With this settings the progress bar goes never over 14% Adaptive Min Samples: 1 Adaptive Threshold: 0.01 With this settings the progress bar goes never over 51% Adaptive Min Samples: 0 (default) Adaptive Threshold: 0.0 (default) [cycles_adaptive.blend](https://archive.blender.org/developer/F8392383/cycles_adaptive.blend)

Axel Bechstein commented

2020-03-06 22:53:32 +01:00

Author

I found out this problem exists only on Cycles CPU rendering.
On Cycles GPU rendering with different settings for the adaptive sampling the progress bar is always right.

I found out this problem exists only on Cycles CPU rendering. On Cycles GPU rendering with different settings for the adaptive sampling the progress bar is always right.

Ankit Meel commented

2020-03-06 22:54:42 +01:00

Member

https://developer.blender.org/T72339

https://developer.blender.org/T72339

Ankit Meel commented

2020-03-06 22:55:25 +01:00

Member

Closed as duplicate of #72339

Closed as duplicate of #72339

Ankit Meel closed this issue

2020-03-06 22:55:25 +01:00

Brecht Van Lommel commented

2020-03-06 23:07:45 +01:00

Owner

Added subscriber: @brecht

Added subscriber: @brecht

Brecht Van Lommel commented

2020-03-06 23:07:45 +01:00

Owner

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

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

Brecht Van Lommel reopened this issue

2020-03-06 23:07:45 +01:00

Brecht Van Lommel commented

2020-03-06 23:07:45 +01:00

Owner

Not sure why this was merged, this is not obviously a duplicate.

Not sure why this was merged, this is not obviously a duplicate.

Ankit Meel commented

2020-03-06 23:08:38 +01:00

Member

because cpu is being used.. does it matter if it is cycles or eevee ?

because cpu is being used.. does it matter if it is cycles or eevee ?

Brecht Van Lommel commented

2020-03-06 23:10:11 +01:00

Owner

The render engine matters, there is no interface freezing mentioned in this report, and this is about the new adaptive sampling feature specifically.

The render engine matters, there is no interface freezing mentioned in this report, and this is about the new adaptive sampling feature specifically.

blender-admin commented

2020-03-06 23:13:03 +01:00

This issue was referenced by blender/cycles@04e077072b

This issue was referenced by blender/cycles@04e077072b1429a356dcadb5a4179d28eb9aad25

blender-admin commented

2020-03-06 23:13:03 +01:00

This issue was referenced by dcdcc23488

This issue was referenced by dcdcc234884205a8f51eb3a56d0482078105e431

Brecht Van Lommel commented

2020-03-06 23:23:29 +01:00

Owner

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

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

Brecht Van Lommel self-assigned this 2020-03-06 23:23:29 +01:00

Brecht Van Lommel commented

2020-03-06 23:47:52 +01:00

Owner

Changed status from 'Confirmed' to: 'Resolved'

Changed status from 'Confirmed' to: 'Resolved'

Brecht Van Lommel closed this issue

2020-03-06 23:47:52 +01:00

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