For me weston compositor-x11 always ran really slow, as it produces a
composite after every X event. I managed to "fix" this with the attached
patch, and now multiple X events are read at a time, making wayland look
*much* faster!
However this only fixes it because it prints something into a gnome
terminal on the same X server. So it obviously relies on some
side-effect of this X window updating. Simpler text, such as doing
{putchar('.'); fflush(stdout);} was insufficient, the newline is
necessary to get the correction. Anyway I suspect some bug in xcb, and I
hope you X experts may be able to figure this out.
This patch also makes x11_compositor_handle_event return non-zero, which
I believe was intended. But that does not fix the bug.
I'm using Xorg on Ubuntu 11.04 using nouveau and the classic Gnome.
diff --git a/src/compositor-x11.c b/src/compositor-x11.c
index d23553e..f329cc4 100644
--- a/src/compositor-x11.c
+++ b/src/compositor-x11.c
@@ -619,9 +619,11 @@ x11_compositor_handle_event(int fd, uint32_t mask, void
*data)
uint32_t *k;
uint32_t i, set;
wl_fixed_t x, y;
+ int count = 0;
prev = NULL;
while (x11_compositor_next_event(c, &event, mask)) {
+ ++count;
switch (prev ? prev->response_type & ~0x80 : 0x80) {
case XCB_KEY_RELEASE:
key_release = (xcb_key_press_event_t *) prev;
@@ -773,8 +775,8 @@ x11_compositor_handle_event(int fd, uint32_t mask, void
*data)
default:
break;
}
-
- return event != NULL;
+ if (count) printf("count = %d\n", count);
+ return count;
}
#define F(field) offsetof(struct x11_compositor, field)
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