[Spice-devel] Add support for A8 bitmap format

[Gerd Hoffmann]

  Hi,

>> Heavy handed alternative:
>>   - Filter the messages in the server and translate any A8 message to ??

For client compatibility this would be great, not sure how much effort
this is though.

> However, I also forgot about the following scenario:
> Running old spice server, old QXL driver in VM on host A
> VM migrates to host B, which has a new spice server, supporting A8.
> User updates driver to get A8 functionality.

We surely need a switch to make a8 visible to the guest.  live migration
between hosts with & without a8 isn't going to fly, so you only can
enable a8 once all host machines in your cluster are upgraded.

One way is to simply bump the qxl pci revision from 3 to 4.

Is a8 everything needed for Xrender?

cheers,
  Gerd