dix: fix device scaling to use a [min,max[ range.

defmin/defmax are screen coords and thus use a min-inclusive, max-exclusive
range. device axes ranges are inclusive, so bump the max up by one to get the
scaling right.

This fixes off-by-one coordinate errors if the coordinate matrix is used to
bind the device to a fraction of the screen. It introduces an off-by-one
scaling error in the device coordinate range, but since most devices have a
higher resolution than the screen (e.g. a Wacom I4 has 5080 dpi) the effect
of this should be limited.

This error manifests when we have numScreens > 1, as the scaling from
desktop size back to screen size drops one device unit.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit 756ab88d93542f0589c9bf46f40ccc57df64f0fd)

0 files changed, 0 insertions, 0 deletions