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intel-virtual-output: Check for pending events before skipping draw 

Make sure we check if the destination display has caught up before
skipping a frame.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-11-08 12:46:08 +00:00
parent ea4f99c333
commit e0075ccee2
1 changed files with 10 additions and 5 deletions
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15
tools/virtual.c
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@ -260,6 +260,8 @@ can_use_shm(Display *dpy,
if (codes) {
XShmCompletionEvent e;
memset(&e, 0, sizeof(e));
e.type = codes->first_event;
e.send_event = 1;
e.serial = 1;
@ -1353,8 +1355,13 @@ static int clone_paint(struct clone *c)
DBG(("%s-%s is damaged, last SHM serial: %ld, now %ld\n",
DisplayString(c->dst.dpy), c->dst.name,
(long)c->dst.serial, (long)LastKnownRequestProcessed(c->dst.dpy)));
if (c->dst.serial > LastKnownRequestProcessed(c->dst.dpy))
return EAGAIN;
if (c->dst.serial > LastKnownRequestProcessed(c->dst.dpy)) {
while (XPending(c->dst.dpy))
;
if (c->dst.serial > LastKnownRequestProcessed(c->dst.dpy))
return EAGAIN;
}
if (FORCE_FULL_REDRAW) {
c->damaged.x1 = c->src.x;
@ -2326,14 +2333,12 @@ static void display_flush_send(struct display *display)
return;
}
memset(&e, 0, sizeof(e));
e.type = display->shm_event;
e.send_event = 1;
e.serial = 0;
e.drawable = display->root;
e.major_code = display->shm_opcode;
e.minor_code = X_ShmPutImage;
e.shmseg = 0;
e.offset = 0;
XSendEvent(display->dpy, display->root, False, 0, (XEvent *)&e);
display_mark_flush(display);