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List: freedesktop-xorg
Subject: how to satisfy requirements of an ancient X-client (4-plane overlay visual)
From: Robert Urban <urban () unix-beratung ! de>
Date: 2015-06-05 22:58:10
Message-ID: 55722982.9070201 () unix-beratung ! de
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Hello,
I'm struggling to satisfy the X11 requirements of an ancient application on
modern graphics hardware.
The application runs on Digital UNIX V4 and is about 20 years old. It expects
generally 8-plane pseudocolor visuals, but with one decisive exception:
It requires a 4-plane overlay visual, and will take nothing else.
My impression is that modern GPUs long since stopped offering 4-plane visuals.
Also it seems that the X-server can only offer an overlay visual if the GPU:
1) offers a corresponding visual, and
2) supports overlays.
Is this correct, or can the X-server somehow work around the lack of one or the
other capability?
Can anyone suggest a way of satisfying these ancient requirements? I don't mind
acquiring hardware, if that will help.
thanks,
Rob
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