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Graphical Representation (Histogram) in Curves disappears after selection


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After making a selection, I lose all graphical histogram representation in the curves tool. To recreate issue:

  1. Open file
  2. Make adjustment using Curves (histogram is shown)
  3. Create a selection (histogram disappears in Curves adjustment tool.
  4. Delete selection and problem still exists
  5. Delete previous Curves adjustment and problem still exists.

Nothing I do, will bring back the original graphical representation on the Curves tool.  This is happening on the current release (1.9.2.1035) as well as the beta (1.9.4.1065)

OS Name    Microsoft Windows 10 Home
Version    10.0.19042 Build 19042
System Manufacturer    LENOVO
System Model    81Y6
System Type    x64-based PC
System SKU    LENOVO_MT_81Y6_BU_idea_FM_Legion 5 15IMH05H
Processor    Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz, 2592 Mhz, 6 Core(s), 12 Logical Processor(s)
BIOS Version/Date    LENOVO EFCN46WW, 12/4/2020
Installed Physical Memory (RAM)    16.0 GB
Total Physical Memory    15.9 GB
Available Physical Memory    9.47 GB
Total Virtual Memory    21.4 GB

DirectX version:    12.0 
GPU processor:        NVIDIA GeForce GTX 1660 Ti
Driver version:        466.11
Driver Type:        DCH
Direct3D feature level:    12_1
CUDA Cores:        1536 
Core clock:        1590 MHz 
Memory data rate:    12.00 Gbps
Memory interface:    192-bit 
Memory bandwidth:    288.05 GB/s
Total available graphics memory:    14269 MB
Dedicated video memory:    6144 MB GDDR6
System video memory:    0 MB
Shared system memory:    8125 MB
Video BIOS version:    90.16.4A.00.78
 

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I have the same issue, but its mainly lack of patience: it can take several seconds until the histogram gets displayed (>10).

What sometimes helps:

  • Switch to "move" tool"
  • Click the yellow triangle in the histogram panel
  • Open curves layer again

Can you try again and wait ... a lot?

Mac mini M1 A2348

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

 

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3 hours ago, NotMyFault said:

I have the same issue, but its mainly lack of patience: it can take several seconds until the histogram gets displayed (>10).

What sometimes helps:

  • Switch to "move" tool"
  • Click the yellow triangle in the histogram panel
  • Open curves layer again

Can you try again and wait ... a lot?

NotMyFault - Thank you for the your response.  Switching to the "move tool" did the trick.  None of the other suggestions worked for me, but at least I do have a work around now. 

Affinity Team - While I now have a workaround, please look into this issue.  I also experience same issue with the "Levels" adjustment.

 

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  • Moderators

Hey Mesquito,

I think this is because the marching ants are quite heavy on the CPU and the histograms outside of the Develop Persona are not prioritised by the CPU so as NotMyFault says, it often takes time. 

I believe I already have an improvement logged for this so I will go and update it with your feedback—thank you.

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2 hours ago, PhotoCat said:

I went through Mesquito's  original process and the histogram, in color, stayed visible as I was applying the selection brush and after I deleted the marching ants.  No issues.  I have version 1.92.

Are you using Windows or Mac?

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On 5/24/2021 at 3:33 AM, Chris B said:

Hey Mesquito,

I think this is because the marching ants are quite heavy on the CPU and the histograms outside of the Develop Persona are not prioritised by the CPU so as NotMyFault says, it often takes time. 

I believe I already have an improvement logged for this so I will go and update it with your feedback—thank you.

Thank you - I'm still having issues after I deselect.  I waited ~30 minutes and it never returned.   My best option at this point is what 'NotMyFault' suggested by moving focus off the selection brush.

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