Re: Glxgears behavior...
Re: Glxgears behavior...
- Subject: Re: Glxgears behavior...
- From: John Stauffer <email@hidden>
- Date: Wed, 16 Apr 2003 05:12:27 -0700
The MacOSX Window Server composite operation is always vbl synced to
avoid tearing. So anytime the OpenGL window touches a region that
requires composting the frame rate will basically be limited by how
fast the graphics card can do vbl synced blits to the screen.
John
On Tuesday, April 15, 2003, at 09:09 PM, Paul Handly wrote:
I haven't tried this for a while, so I don't know when it started, but
this is wierd nevertheless. My display runs at 1280x1024 resolution,
and when I fire up glxgears, it spins away at 1600+ fps. (albeit very
tiny) If I drag the little window so it overlaps (or underlaps) the
Dock, the framerate get chopped down to less than half that, only to
shoot back up when moved out from under the Dock. ANy reason why this
happens (I can't imagine I'm unique in this one - try it!)
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