Re: [Qemu-devel] qvm86, kqemu and video speed

[Struan Bartlett]

James Mastros wrote:

> Struan Bartlett wrote:
>
> > The results seem to me to suggest that emulated performance is 
> > weakest on video operations - which doesn't surprise me if it is 
> > necessary for every pixel change to be emulated - and while this 
> > won't be an issue for some Qemu users it will I expect be a major 
> > issue for others.
>
>
> One thing that could be done as a fairly quick hack would be to call 
> SDL's bitblit function for bitblits that are simple copies.  These are 
> rather common, and SDL already knows how to optimize them well -- 
> we're just missing a bit of glue.  I got about halfway through doing 
> this in a few hours of hacking, but realized that the video struct was 
> completely undocumented, and I wasn't sure how to map from a pointer 
> into the LFB back into xy coords. 

I'm curious. Could you post your code somewhere I could look at it?