Should "getPointer" be Slow?

[Thaumaturge]

@rdb

It is an unfortunate surprise that getPointer is slow. It’s probably due to the fact that it synchronously requests the current position from the X11 server, to get the lowest possible latency.

Hmm… Could it be that it’s not truly slow, but that it’s appearing slow due to waiting for sync? That is, that its apparent duration is simply whatever time is “left” in the frame…?

That would explain the fact that its duration seemed to vary…

@rdb

That said, what are you using getPointer for, exactly? You should prefer using “relative” mouse mode if you wish to use a mouse-look-style interface, which doesn’t require a round-trip to the X11 server to query the pointer.

Ah, I’m actually not making that sort of game!

Specifically, I’m making a top-down game, with the mouse being used to control a cursor for aiming relative to the player-character. I thus want to get the mouse-position in the 2D playfield in order to determine where the player is aiming.

(I think that I switched from “getMouse” to “getPointer” based on this forum post, and never really saw a reason to switch back.)

@rdb

PS. Out of curiosity, are you using a Wayland-based window manager or are you using X.org?

Hmm… You know, I don’t really know.

Okay, so, having done some quick searching, if “echo $XDG_SESSION_TYPE” is to be believed, I appear to be using x11.