[Freeciv-Dev] (PR#12151) map scrolling interrupted

["Jason Short" <jdorje@xxxxxxxxxxxxxxxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=12151 >

> [chrisk - Mon Feb 07 10:27:26 2005]:
> 
> 
> CVS 07 FEB 2005 GTK2 HEAD
> 
> When I move the main map (soft scroll), the execution occurs in two steps,
> which looks very ugly.

This happens with mapview sliding.  The problem is when the FPS drops
below 10 the sliding becomes counter-productive (more confusing than
helpful).  FPS depends heavily on tileset, computer power, and screen
resolution/window size.  I think gdk isn't accelerated so a graphics
card will make no difference.

There is code that counts up the FPS on each slide.  Search
mapview_common.c for "FPS" and change the LOG_DEBUG message to a
LOG_NORMAL to enable it.  Perhaps we should automatically disable it if
it is too slow.

Recent/ongoing changes to the drawing code (so-called "queued drawing")
will speed up refreshes dramatically (up to 100x) but will have no
effect on sliding speed.  However I do have some changes planned (after
discussions with Per and Vasco) that could speed up sliding speed a bit.

-jason