Optimizing a 6502 image decoder, from 70 minutes to 1 minute

Re:Optimizing a 6502 image decoder, from 70 minutes to 1 minute by flanked-evergl on Monday September 29, 2025 @09:44AM (#45413720)

If I have the "Without interpolating, we can clearly see we only have half the pixels." image entirely on screen, using Chrome, KDE with X11 on Ubuntu 24.04, then it makes my whole screen change colour. Everything becomes slightly darker or something. Very odd. I will try it on another computer.

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Re:Optimizing a 6502 image decoder, from 70 minutes to 1 minute by Cockbrand on Monday September 29, 2025 @09:57AM (#45413907)

Without having tried it, maybe there's some HDR content on the page, triggering the display's HDR mode?

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Re:Optimizing a 6502 image decoder, from 70 minutes to 1 minute by opello on Monday September 29, 2025 @01:10PM (#45416202)

I wonder if there's not some adaptive backlight automatic gain control cueing off of the moire image's black pixels, since you describe things as slightly darker.

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