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From: "Jamie Burns" <jamie.burns@dynamicexpression.co.uk>
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Subject: Re: [Qemu-devel] QEMU Video Driver for Win NT-based systems
Date: Thu, 13 May 2004 10:56:30 +0100
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To: qemu-devel@nongnu.org

I double that. GDI and DirectDraw are different things.

Nearly all cards have for some years supported *both* GDI acceleration (from
Windows 3.1 days...) and DirectDraw acceleration (from Windows 95 days...).
Although they support both, they are different sets of code for different
purposes.

----- Original Message ----- 
From: "Filip Navara" <xnavara@volny.cz>
To: <qemu-devel@nongnu.org>
Sent: Thursday, May 13, 2004 8:53 AM
Subject: Re: [Qemu-devel] QEMU Video Driver for Win NT-based systems


> Natalia Portillo wrote:
>
> >Then, why do you require DirectDraw support for activating acceleration?
> >Is simply.
> >
> >When no acceleration is, the GDI calls are rendered manually, when it is
activated, they are rendered through DirectDraw.
> >
> >
> No they aren't. Please trust me on this, I know quite a bit of details
> of the Windows NT (and 9x also) architecture and this is just not true.
>
>
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/graphics/hh/graphics/dispvid_2003_7z53.asp
>
> - Filip
>
>
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