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rendering expecting time is negative #50517

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opened 2017-01-24 13:33:00 +01:00 by Michael Prach · 11 comments
Michael Prach commented 2017-01-24 13:33:00 +01:00
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System Information
Ubuntu 14.04 (amd64)
Nvidia GT240

Blender Version
Broken: (example: 2.78.4 520afa2962 from 2017-01-24 08:15)

rendering time for complex scene with glass material and big number of samples (1800) cause negative remaining time
progress bar of render stays zero all time of rendering

deep_glass.blend
screenshot 2017-01-24 15:25:01.png
deep_glass.blend

**System Information** Ubuntu 14.04 (amd64) Nvidia GT240 **Blender Version** Broken: (example: 2.78.4 520afa2962 from 2017-01-24 08:15) rendering time for complex scene with glass material and big number of samples (1800) cause negative remaining time progress bar of render stays zero all time of rendering [deep_glass.blend](https://archive.blender.org/developer/F439384/deep_glass.blend) ![screenshot 2017-01-24 15:25:01.png](https://archive.blender.org/developer/F439379/screenshot_2017-01-24_15_25_01.png) [deep_glass.blend](https://archive.blender.org/developer/F439383/deep_glass.blend)
Michael Prach commented 2017-01-24 13:33:01 +01:00
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Changed status to: 'Open'

Changed status to: 'Open'
Michael Prach commented 2017-01-24 13:33:01 +01:00
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Added subscriber: @mpracz

Added subscriber: @mpracz
Michael Prach changed title from rendering time is negative to rendering expecting time is negative 2017-01-24 13:37:20 +01:00
Fable Fox commented 2017-01-24 17:56:19 +01:00
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Added subscriber: @fablefox

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Fable Fox commented 2017-01-24 17:56:19 +01:00
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This I can confirm. Win 7, latest e5d8c2a build.

I get 2 hours for the 2.78a, but negatives for latest build.

This I can confirm. Win 7, latest e5d8c2a build. I get 2 hours for the 2.78a, but negatives for latest build.
Adam Friesen commented 2017-01-24 19:24:14 +01:00
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Added subscriber: @Ace_Dragon

Added subscriber: @Ace_Dragon
Adam Friesen commented 2017-01-24 19:24:14 +01:00
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The time remaining feature now is also always broken when progressive refine is turned on.

Either the value is a negative number or the progress bar ticks up to 100 percent when only a small fraction of the total samples have been calculated.

You don't even need to request a .blend file, just do a progressive refine render with a large amount of samples for the default cube. I believe this was broken when Lukas Stockner did a refactor in a bid to improve its accuracy for tiled rendering (but I would rather have it slightly inaccurate than broken).

The time remaining feature now is also always broken when *progressive refine* is turned on. Either the value is a negative number or the progress bar ticks up to 100 percent when only a small fraction of the total samples have been calculated. You don't even need to request a .blend file, just do a progressive refine render with a large amount of samples for the default cube. I believe this was broken when Lukas Stockner did a refactor in a bid to improve its accuracy for tiled rendering (but I would rather have it slightly inaccurate than broken).
Joey Ferwerda commented 2017-01-24 22:39:22 +01:00
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Added subscriber: @TheOnlyJoey

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Sergey Sharybin was assigned by Joey Ferwerda 2017-01-24 22:39:22 +01:00
Joey Ferwerda commented 2017-01-24 22:39:22 +01:00
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Can confirm, will assign to Sergey.

Can confirm, will assign to Sergey.
blender-admin commented 2017-01-25 11:18:12 +01:00
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This issue was referenced by blender/cycles@ea15890cfc

This issue was referenced by blender/cycles@ea15890cfccc7b44bbe2d21a6db7f099c249e136
blender-admin commented 2017-01-25 11:18:12 +01:00
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This issue was referenced by 8ea09252c8

This issue was referenced by 8ea09252c8261c7057a130763c7f44bd45c9f9d2
Sergey Sharybin commented 2017-01-25 11:18:38 +01:00
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Changed status from 'Open' to: 'Resolved'

Changed status from 'Open' to: 'Resolved'
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Reference: blender/blender#50517
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