XCB doesn't flush the output buffer automatically, so we have to call xcb_flush ourselves before waiting.
Signed-off-by: Keith Packard keithp@keithp.com --- src/glx/dri3_glx.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/src/glx/dri3_glx.c b/src/glx/dri3_glx.c index c26d6e5..7982f6b 100644 --- a/src/glx/dri3_glx.c +++ b/src/glx/dri3_glx.c @@ -405,6 +405,7 @@ dri3_wait_for_event(__GLXDRIdrawable *pdraw) xcb_generic_event_t *ev; xcb_present_generic_event_t *ge;
+ xcb_flush(c); ev = xcb_wait_for_special_event(c, priv->special_event); if (!ev) return false; @@ -1074,6 +1075,7 @@ dri3_find_back(xcb_connection_t *c, struct dri3_drawable *priv) if (!buffer->busy) return b; } + xcb_flush(c); ev = xcb_wait_for_special_event(c, priv->special_event); if (!ev) return -1;