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Bug #12559

Normal blend operation causes image to turn all black

Added by Philipp Christ 6 months ago. Updated 6 months ago.

Status:
New
Priority:
Low
Assignee:
-
Category:
Darkroom
Target version:
-
Start date:
01/20/2019
Due date:
% Done:

0%

Affected Version:
git master branch
System:
openSUSE
bitness:
64-bit
hardware architecture:
amd64/x86

Description

There's some funny behaviour happening on my system i noticed when adding a denoise instance with blend mode activated.

During editing of the attached image the picture went all black when adding a normal blend on the denoise (non-local means) instance.
This would only happen on even numbers of the blend opacity slider.

When trying to figure out what might be causing this i turned off the equalizer module with the result that the image now turns black on odd numbers instead.

Further, I noticed that changing the size of the work area, for instance by minimizing one of the side bars, the behaviour will swap from even to odd numbers or vice-versa again.

this is darktable 2.7.0+260~gb94a93696

It would be interesting to know if this just on my system or if others can reproduce this too.
I can provide further debug output if required.

2019-01-01-0009.jpg (10.7 MB) Philipp Christ, 01/20/2019 09:41 PM

2019-01-01-0009_01.jpg.xmp (1.39 KB) Philipp Christ, 01/20/2019 09:41 PM

dt_blend_img_visible.png (998 KB) Philipp Christ, 01/20/2019 09:42 PM

dt_blend_img_invisible.png (198 KB) Philipp Christ, 01/20/2019 09:42 PM

clinfo-2019-01-24.txt Magnifier (8.75 KB) Philipp Christ, 01/24/2019 09:22 PM

dt-2019-01-24.out (504 KB) Philipp Christ, 01/24/2019 09:23 PM

History

#1 Updated by Aurélien PIERRE 6 months ago

OpenCL on or off ?

#2 Updated by Philipp Christ 6 months ago

I just tried with --disable-opencl and everything is fine then.

I'm running the kernel radeon drivers but with opencl from amdgpu-pro 18.50.
The attached output is with opencl enabled and -d all just for good measure.

Anything else I should try to narrow this down?

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