Mouse smoothing should be optional

Poobah · Post by **Poobah** » Thu Sep 29, 2005 4:56 am

I've noticed that with the latest WIP build of ZSNES, the mouse cursor is smoothened by averaging its current coordinates with the previous ones. While this is good with old 30hz mice, it's a pain with decent mice that refresh around 100 times per second. Is there any chance that this could be set in the options somewhere rather than always on?

Post by **grinvader** » Thu Sep 29, 2005 9:39 am

Whatever mouse you have, the GUI display refreshes only 36 times per second.

Poobah · Post by **Poobah** » Sat Oct 08, 2005 6:15 am

Well, could you answer my question? However the GUI display refreshes, the mouse's coordinates are still 'smoothened', creating a very annoying sluggishness.

Phil · Post by **Phil** » Sat Oct 08, 2005 8:50 pm

Imo, the answer is no and the mouse is by far better than before. I have a modern USB mouse. Maybe something's wrong from your side?

kode54 · Post by **kode54** » Sat Oct 08, 2005 8:55 pm

What you are experiencing is latency.

Poobah · Post by **Poobah** » Sun Oct 09, 2005 5:27 am

I've always been getting the latest WIPs as soon as they're released, and I know that the problem was only introduced in either the current release or the previous one.

I also know that this problem is exactly the same as the result of smoothening the mouse too much, because I've experimented with that sort of stuff before.

EDIT: After some more experimenting, I've observed that the problem only occurs when Triple Buffering is enabled, and worsens when in a 60Hz screen mode.

kode54 · Post by **kode54** » Sun Oct 09, 2005 10:45 am

There you go, latency.

The mouse is already only being tracked and updated every 1.6667 frames ( 36fps ) at 60Hz display, then add the delay of two frames instead of three, and your cursor is only redrawn almost every frame, and up to 50ms behind.

Increasing the GUI update rate should solve the update frequency, but it won't solve the triple buffering lag.