Re: Migrating ports from XFree86 to Xorg (Was: Changing default X11_TYPE from native to modular for some platforms)

[Michael <macallan1888%gmail.com@localhost>]

Hello,

On Tue, 27 Sep 2011 15:37:55 +0200
Radoslaw Kujawa <radoslaw.kujawa%c0ff33.net@localhost> wrote:

> > I don't see how we can use wsfb, though. The genfb driver does not support
> > the graphics card's text mode,
> 
> It's not really a text mode in VGA/x86 sense of this word. Current grf 
> drivers set up some graphics mode, on which terminal is emulated (ite) using 
> 2D accelerated drawing routines. Similarly, terminal emulator is attached on 
> top of wsdisplay driver (genfb in this case). The whole point is that genfb 
> will be slower, because it does not know about specific capabilities of the 
> used graphics hardware (blitter etc.). So I don't really like this solution.

No need to use genfb at all if you can attach a wsdisplay directly to grf.
As far as I can tell grf already gives you a reasonable abstraction which - as 
a stopgap measure - can easily be translated to wsdisplayops in a more or less 
generic way. That would allow wsdisplay to use whatever acceleration 
capabilities ite uses.
Also, wsdisplay with vcons is likely a lot faster than ite on dumb framebuffers.

have fun
Michael