[Scummvm-devel] Re: [Scummvm-cvs-logs] SF.net SVN: scummvm: [21312] scummvm/trunk/engines/kyra/kyra.cpp

[Kostas Nakos]

Hi,

Max Horn wrote:
> 
> Yes. That's my rule #1, and I am absolutely for implementing it.
> 
> Regardless of this, it still would be nice to see automatic cursor 
> updates, too, since 10 fps is rather slow for mouse cursor updates. No 
> full update is necessary for that, of course. But I fully understand 
> that it might be difficult to implement for some backends, so I 
> certainly don't insist on implementing that :-).
> 

Just to make things more interesting, Windows CE does not support the 
notion of display double buffering, vertical sync etc. So Nicholas 
updates dirty rectangles in place in the screen buffer and handles the 
mouse separately, by doing background restoration (as one would do if 
one had to draw/undraw sprites in the same buffer).

So cursor updates are handled asynchronously with respect to screen 
updates. Of course, the procedure is quite tricky to get it working right.

Regards,
Kostas