Pixel offset when using sliders with HW Acceleration Enabled

Den Denyer

• 20. August 2018 00:33

As title, when I have HW Accel turned on, when I tweak a slider the image appears to jump down and to the left by one pixel in each axis, before immediately returning.

It makes editing really nauseating so I had to turn off HW Accel. Nvidia 970GTX with March 2018 drivers.

Anyone any ideas?

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  Christian Gruner

  • 20. August 2018 06:18

  At what zoom level does this happen?

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  Den Denyer

  • 20. August 2018 07:19

  Ahh, good pick up on a crucial detail - I only observe the effect at 100% or greater.

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  Christian Gruner

  • 22. August 2018 06:41

  I have been hunting this one for some time, but simply can’t reproduce at will.
  Do you have masks on the image?

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  Den Denyer

  • 22. August 2018 08:40

  Nope, no masks. My headache couldn't take it for long enough to get that far! 😄
  
  So I reset all adjustments on an image, rebooted the PC, reloaded and tried again.
  
  Initially the exposure adjustments on the levels panel didn't cause the jogging. Then I went to the detail panel (Which is where I first observed it whilst trying to adjust sharpening) and voila, the jog appeared when editing sharpening/noise sliders.
  
  Now when I go back to the exposure controls, the jog also occurs. Reloading the program (But not rebooting) and the problem persists.
  
  Confirmed that it is an image pixel jog, not a screen pixel jog, by setting a guide and zooming to 400%. The shift is easily seen, I uploaded a short clip here:
  
  
  
  In the clip, I am just clicking on the clarity slider rather than moving it, which is enough to trigger the jog. I slide it around toward the end.

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