On Di, 2014-07-01 at 10:31 +0200, Paolo Bonzini wrote:
Il 01/07/2014 10:26, Alexander Graf ha scritto:
Right. A quick fix would be to add a flag to force always using a shadow
surface and set it in cirrus ... I'm not sure anybody will notice the
performance difference.
I suspect we can rip out hw cursor emulation and nobody will notice the
difference either ...
Very likely ;). Though I think we're better off keeping it around to
make sure we're still compatible with ancient guests (Windows 3.1 might
use it too). Making it slow however shouldn't make any difference at all.
If you tell me what to look at, I legally own a Windows 98 CD (also NT4
but I have to dig it out) and can test it later this week.
/me has win98 too, that doesn't boot after install though.
So if you can try nt4 that would be great. Test is simple: switch into
16bpp mode (that one uses shared surface in git master), check whenever
the mouse pointer is present.
Bonus points for compiling with DEBUG_CIRRUS and checking the logs to
see whenever nt4 actually enables the hw cursor (sr registers, index
0x12, bit 0).