вт, 13 мая 2025 г., 12:11 Pekka Paalanen <[email protected]>:

On Mon, 12 May 2025 15:52:04 +0300 Andrew Randrianasulu <[email protected]> wrote:

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And modern reincarnation of this idea, using OBS's plugins!

https://m.youtube.com/watch?v=qXrn4MqY1Wo "DIY "infinity contrast" TV - with 100% recycled parts" from two months ago, initially found by my friend Vladimir after I showed him all this.

added two more recipients in cc.

Pekka, you might like this too, as less secretive description of how HDR part of HDR display system works.

Hi Andrew,

that's a neat project for sure.

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PS: I played around with Colorspace property on my hdmi connector on RX550 via xrandr:

guest@slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace Default guest@slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace BT2020_YCC guest@slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace Default guest@slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace opRGB guest@slax :~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace Default

Anything but Default resulted in VERY pink (nearly red!) image. Not sure if this is limitation of 8bit per channel mode or hdmi to vga adapter I use?

Maybe https://gitlab.freedesktop.org/drm/amd/-/issues/3358 ?

Ah, thanks, looks similar, while I tested with fullscreen firefox window (triggered xrandr from remote ssh session).

Thanks, pq