Posting this here since issues/patches seem to be dropped to the
floor.
I've noticed a while ago that the new xlib select devices are queried
poorly when the app becomes idle. I've also noticed just now that when
quering a tablet for values, and there's more then 3 fields queried,
that the input update performance becomes extremely sluggish (as in
pen moving and touching). I propose this patch which solves all of
these issues for me:
Index: pyglet/app/xlib.py
===================================================================
--- pyglet/app/xlib.py (revision 2449)
+++ pyglet/app/xlib.py (working copy)
@@ -100,24 +100,8 @@
self._notification_device.set()
def step(self, timeout=None):
- pending_devices = []
-
- # Check for already pending events
- for device in self._select_devices:
- if device.poll():
- pending_devices.append(device)
-
- # If nothing was immediately pending, block until there's
activity
- # on a device.
- if not pending_devices and (timeout is None or not timeout):
- iwtd = self._select_devices
- pending_devices, _, _ = select.select(iwtd, (), (),
timeout)
-
- if not pending_devices:
- return False
-
- # Dispatch activity on matching devices
- for device in pending_devices:
+ pending, _, _, = select.select(self._select_devices, (), (),
timeout)
+ for device in pending:
device.select()
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