Hi, > > So, the options I see are: > > > > (1) Declare qxl deprecated, promote virtio-vga instead. > > > > (2) Pimp the qxl hardware, add page-flip support. Requires > > changes > > in spice-server (due to lazy rendering), qemu qxl emulation > > and > > guest kernel driver. Should be transparent to spice-client > > and > > guest userspace (aka xorg qxl driver). > I don't think that supporting page flipping in QXL would be hard. Yes, it shouldn't be difficult. But still requires new versions on both guest and host side. And these new versions will have virtio-vga support too. Also note that wayland will not use any qxl 2d accel operations. Same is true for any opengl compositors like gnome-shell when running on xorg. So performance-wise it should not make a big difference whenever you are using qxl or virtio-vga (without virgl), it's all llvmpipe software opengl rendering in both cases. So, is it worth updating qxl? Or should we focus on virtio-vga instead? > Would just requires to support calling create surface having a > surface and detecting that only the pointer changes. Either that, or an explicit QXL_SURF_FLAG_PAGEFLIP instead of the detection. But when touching the qxl virtual virtual hardware anyway we might consider to deprecate the concept of a "primary surface" altogether and just allow mapping normal surfaces to output heads instead. Which would be alot closer to how physical hardware works today and should be more future-proof. Of course that would be a bigger change and probably requires spice-protocol changes too. cheers, Gerd _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/spice-devel