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qxl: make sure we continue to run with a shared buffer 

The qxl renderer works only with a shared displaysurface.  So better
make sure we actually have one and restore it when needed.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2011-10-21 21:53:54 +02:00
parent 0e2487bd6f
commit a053f1b1fb
1 changed files with 12 additions and 1 deletions
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13
hw/qxl-render.c
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@ -76,7 +76,14 @@ void qxl_render_update(PCIQXLDevice *qxl)
VGACommonState *vga = &qxl->vga;
QXLRect dirty[32], update;
void *ptr;
int i;
int i, redraw = 0;
if (!is_buffer_shared(vga->ds->surface)) {
dprint(qxl, 1, "%s: restoring shared displaysurface\n", __func__);
qxl->guest_primary.resized++;
qxl->guest_primary.commands++;
redraw = 1;
}
if (qxl->guest_primary.resized) {
qxl->guest_primary.resized = 0;
@ -127,6 +134,10 @@ void qxl_render_update(PCIQXLDevice *qxl)
memset(dirty, 0, sizeof(dirty));
qxl_spice_update_area(qxl, 0, &update,
dirty, ARRAY_SIZE(dirty), 1, QXL_SYNC);
if (redraw) {
memset(dirty, 0, sizeof(dirty));
dirty[0] = update;
}
for (i = 0; i < ARRAY_SIZE(dirty); i++) {
if (qemu_spice_rect_is_empty(dirty+i)) {