Sentinel
Posts: 5
Joined: Sun Jun 30, 2019 1:26 pm

Pi 4 How to change screen gamma

Fri Jul 05, 2019 10:39 pm

On Raspberry Pi 4 B Rasbian:
I want to change gamma for OpenGL 2.1.
xrandr and xgamma seems not working.
In yquake 2 with SDL2 or SDL 1.2 changing brightness and 'vid_gamma' not yielding any effects.
Building "WITH_X11GAMMA" (setting the gamma via X11) behave the same.
Any ideas for changing gamma on RPi4?

6by9
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 7906
Joined: Wed Dec 04, 2013 11:27 am
Location: ZZ9 Plural Z Alpha, aka just outside Cambridge.

Re: Pi 4 How to change screen gamma

Sat Jul 06, 2019 7:39 am

Not exposed, and a fair way down the priority list.
It may even have to wait until the full KMS driver is sorted - that's the only place it has been available on earlier Pis.
Software Engineer at Raspberry Pi Trading. Views expressed are still personal views.
I'm not interested in doing contracts for bespoke functionality - please don't ask.

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