motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-07-27 20:33:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

spice: rework mirror allocation, add no-resize fast path

Browse source 
Add fast path to qemu_spice_display_switch in case old and new
displaysurface have identical size (happens with display panning
and page flipping).  We just swap the backing store then and don't
go through the whole process of deleting and creating the primary
surface.

To simplify the code a bit move mirror surface allocation to
qemu_spice_display_switch().

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2014-11-08 08:56:34 +01:00
parent 3dcadce507
commit 555e72f2d0
1 changed files with 26 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

33
ui/spice-display.c
View file

@ -207,12 +207,6 @@ static void qemu_spice_create_update(SimpleSpiceDisplay *ssd)
return; return;
}; };
if (ssd->surface == NULL) {
ssd->surface = pixman_image_ref(ssd->ds->image);
ssd->mirror = qemu_pixman_mirror_create(ssd->ds->format,
ssd->ds->image);
}
for (blk = 0; blk < blocks; blk++) { for (blk = 0; blk < blocks; blk++) {
dirty_top[blk] = -1; dirty_top[blk] = -1;
} }
@ -409,7 +403,29 @@ void qemu_spice_display_switch(SimpleSpiceDisplay *ssd,
SimpleSpiceUpdate *update; SimpleSpiceUpdate *update;
bool need_destroy; bool need_destroy;
dprint(1, "%s/%d:\n", __func__, ssd->qxl.id); if (surface && ssd->surface &&
surface_width(surface) == pixman_image_get_width(ssd->surface) &&
surface_height(surface) == pixman_image_get_height(ssd->surface)) {
/* no-resize fast path: just swap backing store */
dprint(1, "%s/%d: fast (%dx%d)\n", __func__, ssd->qxl.id,
surface_width(surface), surface_height(surface));
qemu_mutex_lock(&ssd->lock);
ssd->ds = surface;
pixman_image_unref(ssd->surface);
ssd->surface = pixman_image_ref(ssd->ds->image);
qemu_mutex_unlock(&ssd->lock);
qemu_spice_display_update(ssd, 0, 0,
surface_width(surface),
surface_height(surface));
return;
}
/* full mode switch */
dprint(1, "%s/%d: full (%dx%d -> %dx%d)\n", __func__, ssd->qxl.id,
ssd->surface ? pixman_image_get_width(ssd->surface) : 0,
ssd->surface ? pixman_image_get_height(ssd->surface) : 0,
surface ? surface_width(surface) : 0,
surface ? surface_height(surface) : 0);
memset(&ssd->dirty, 0, sizeof(ssd->dirty)); memset(&ssd->dirty, 0, sizeof(ssd->dirty));
if (ssd->surface) { if (ssd->surface) {
@ -422,6 +438,9 @@ void qemu_spice_display_switch(SimpleSpiceDisplay *ssd,
qemu_mutex_lock(&ssd->lock); qemu_mutex_lock(&ssd->lock);
need_destroy = (ssd->ds != NULL); need_destroy = (ssd->ds != NULL);
ssd->ds = surface; ssd->ds = surface;
ssd->surface = pixman_image_ref(ssd->ds->image);
ssd->mirror = qemu_pixman_mirror_create(ssd->ds->format,
ssd->ds->image);
while ((update = QTAILQ_FIRST(&ssd->updates)) != NULL) { while ((update = QTAILQ_FIRST(&ssd->updates)) != NULL) {
QTAILQ_REMOVE(&ssd->updates, update, next); QTAILQ_REMOVE(&ssd->updates, update, next);
qemu_spice_destroy_update(ssd, update); qemu_spice_destroy_update(ssd, update);