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Date: Thu, 11 May 2006 23:39:58 +0200
From: Fabrice Bellard <fabrice@bellard.org>
Subject: Re: [Qemu-devel] PATCH: fix bgr color mapping on qemu on Solaris/SPARC
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To: qemu-devel@nongnu.org

Dan Sandberg wrote:

> Just curious...
> 
> Are you using an OpenGL directdraw surface for the graphics emulation in 
> Qemu?
> If not, then consider the benefits:
> 1. It is much faster than any native graphics 2D/3D primitives like 
> Windows GDI
> 2: It gives full control over things like window or fullscreen mode in 
> any (almost) resolution and color depth.
> 3. It is operating system independent.
> 4. It handles things like RGB, BGR, 24bit, 15bit, 16bit, 8bit, alpha 
> channel etc in hardware, all you have to do is select the pixelformat 
> you like to use for the buffer and OpenGL does the rest - lightning 
> fast, minimum CPU-load.
> [...]

I am not sure the bottleneck is in the rendering itself and the single 
primitive that QEMU uses (display a rectangle of bitmap) is accelerated 
by every graphic card since many years. But you are free to modify the 
SDL library to include OpenGL rendering if it is not already done :-)

Fabrice.