Re: [Qemu-devel] QEMU Video Driver for Win NT-based systems

[Fabrice Bellard]

What not using the main graphic card ? dosemu does it... All you need is 
"just" to be able to switch the rendering contexts. So it is a host VGA 
card dependent code, but it can be rather small.

Fabrice.

Grzegorz Kulewski wrote:
> Another idea is to allow qemu use second graphic card in your pc (not used 
> by the host). I have one spare GeForce 2 @ PCI so I will be glad to see 
> this implemented. Before that we will probably need working PCI layer in 
> qemu. And I we can track the area in graphic memory used by current screen 
> maybe it is possible to write driver that will copy screen from second 
> card to a window on first (this could be implemented on guest or on host).
>
>
> Grzegorz Kulewski
>
>
> On Wed, 12 May 2004, Natalia Portillo wrote:
>
>
> > This is the same as making a DirectDraw (2D part of DirectX) driver.
> >
> > A full DirectX package of drivers will be great: DirectDraw (for 2D), Direct3D 
> > (converting calls to OpenGL in host), DirectSound/DirectSound3D and DirectMusic 
> > (for the sound card), and DirectInput (keyboards, mice, joysticks)...
> >
> > On Wed, 12 May 2004 12:30:08 +0100
> > "Jamie Burns" <address@hidden> wrote:
> >
> >
> > > Wouldn't a 2D accelerator be a good idea first? ;o)
> > >
> > > If Windows asks for a "line" to be drawn, or a "blit-op" then could that be
> > > passed through to the QEMU emulated video hardware, which in turn could
> > > simply get SDL or whatever to do the required operation. Then 2D graphics
> > > would speed up immensly.
> > >
> > > Are there any documents giving an overview of how the QEUM architecture
> > > works in this respect? I would work on a driver in my spare time but really
> > > do not know where to start.
> > >
> > > J.
> > >
> > > ----- Original Message ----- 
> > > From: "Grzegorz Kulewski" <address@hidden>
> > > To: <address@hidden>
> > > Sent: Wednesday, May 12, 2004 11:20 AM
> > > Subject: Re: [Qemu-devel] QEMU Video Driver for Win NT-based systems
> > >
> > >
> > >
> > > > On Wed, 12 May 2004, Filip Navara wrote:
> > > >
> > > > > Jean-Michel POURE wrote:
> > > > >
> > > > > > > if anyone is interested I have created open source QEMU/Bochs video
> > > > > > > driver for Windows NT/2K/XP/2003.
> > > > > > > Binaries - www.volny.cz/xnavara/qemuvid_bin.zip
> > > > > > > Sources - www.volny.cz/xnavara/qemuvid_src.zip
> > > > > >
> > > > > > Are these VBE drivers?
> > > > >
> > > > > Not in the sense of VBE 3.0 specification. I have such driver too, but
> > > > > it propably works only on ReactOS because of using undocumented API.
> > > > >
> > > > >
> > > > > > Can you describe the drivers and its capabilities in more details?
> > > > >
> > > > > The driver uses the Bochs/QEMU VBE I/O port, the same method as used by
> > > > > BXVGA. My implementation is a bit simplier, but still with the same
> > > > > features. It also uses the Linear FrameBuffer feature of the Bochs/QEMU
> > > > > interface that wasn't available at the time when BXVGA was written.
> > > >
> > > > Are there any driver that works with win9x? Can you port your (or write
> > > > it from scratch)?
> > > >
> > > > Will your driver work in Bochs?
> > > >
> > > > Is it possible to create driver that emulates DirectX and OpenGL by
> > > > sending the OpenGL commands to the host OpenGL libs. DirectX commands
> > > > should probably be converted before into OpenGL.
> > > >
> > > >
> > > > Thanks for your work,
> > > >
> > > > Grzegorz Kulewski
> > > >
> > > >
> > > >
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> > >
> > >
> > >
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> >
> >
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