[haiku-development] Re: Radeon HD 7700 Dual Monitor - Possible?
- From: Axel Dörfler <axeld@xxxxxxxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Sun, 18 Dec 2016 22:46:46 +0100
Am 17/12/2016 um 08:54 schrieb Adrien Destugues:
Well, at the accelerant level, the API was extended to somewhat support
it. This is what is used by the old radeon driver (and possibly nvidia,
I'm not sure there). The only part of Haiku taking advantage of this new
API is the screen preferences, which allows setting different video
modes for each display.
Implementing this API in some of the modern accelerants would be a first
step towards getting app_server to support it.
Not really -- the "API" as you call it is just a hack that completely
disregards real multi monitor support; it bypasses the app_server, and
just enlarges its display resolution.
Unless we start by adding
such support in the test_app_server (running with two BWindows as
"screens") first. This screen preflet was also backported to BeOS and
shipped with the Radeon driver there, allowing the same limited support
for multiple monitors.
The app_server should already support everything that is needed for
multi monitor (it merges different screens to a single VirtualScreen).
Even BScreen does kind of support multi monitor -- if you had two
different cards, Haiku might or should already support both screens you
attached to them. But that's it as of now: it has never been tested
AFAIK, and multiple outputs of a single card aren't supported at all.
Bye,
Axel.
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