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Re: [Qemu-devel] [PATCH 2/9] virtio-gpu/2d: add virtio gpu core code
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] [PATCH 2/9] virtio-gpu/2d: add virtio gpu core code |
Date: |
Tue, 17 Mar 2015 09:21:46 +0100 |
Hi,
> > + for (i = 0; i < g->conf.max_outputs; i++) {
> > + g->scanout[i].con =
> > + graphic_console_init(DEVICE(g), i, &virtio_gpu_ops, g);
> > + if (i > 0) {
> > + dpy_gfx_replace_surface(g->scanout[i].con, NULL);
>
> GTK can't cope very well with NULL surfaces (read: after patch 7 (when
> using -vga virtio finally works) "x86_64-softmmu/qemu-system-x86_64 -vga
> virtio -display gtk" segfaults). With SDL (SDL2), it works fine.
Yes, I know. I have a gtk patch for that in the pipeline.
But that alone doesn't get multihead work sanely as there is at least
one more problem to tackle: Mouse coordinates are not correct. Our
options are:
(a) Have guest notify host about screen arrangement, then transform
coordinates in qemu. Dave did that initially.
(b) Have a guest agent (spice style).
(c) Have one tablet per head and link them. That is very simliar to
physical hardware (think touchscreen).
I think (c) will work best long-term, but it is also the most difficult
one as various projects are involved here to get the guest-side
configuration done.
I've changed the number of heads to be 1 by default, we better sort all
those issues before we flip the multihead default switch.
cheers,
Gerd
- Re: [Qemu-devel] [PATCH 8/9] virtio-gpu: add to display-vga test, (continued)
- [Qemu-devel] [PATCH 5/9] virtio-vga: add '-vga virtio' support, Gerd Hoffmann, 2015/03/13
- [Qemu-devel] [PATCH 1/9] virtio-gpu/2d: add hardware spec include file, Gerd Hoffmann, 2015/03/13
- [Qemu-devel] [PATCH 9/9] [hack] virtio-gpu: maskerade as -device VGA, Gerd Hoffmann, 2015/03/13
- [Qemu-devel] [PATCH 2/9] virtio-gpu/2d: add virtio gpu core code, Gerd Hoffmann, 2015/03/13
- [Qemu-devel] [PATCH 7/9] virtio-vga: add vgabios binary, Gerd Hoffmann, 2015/03/13
- [Qemu-devel] [PATCH 4/9] virtio-vga: add virtio gpu device with vga compatibility, Gerd Hoffmann, 2015/03/13
- [Qemu-devel] [PATCH] opengl: require glx, Gerd Hoffmann, 2015/03/13
- [Qemu-devel] [PATCH 3/9] virtio-gpu-pci: add virtio pci support, Gerd Hoffmann, 2015/03/13
- Re: [Qemu-devel] [PATCH 0/9] add virtio-gpu with 2d support, Christopher Covington, 2015/03/23