[quake3-bugzilla] [Bug 6435] New: Fix UI cursor movements

[bugzilla-daemon at icculus.org]

https://bugzilla.icculus.org/show_bug.cgi?id=6435

            Bug ID: 6435
           Summary: Fix UI cursor movements
           Product: ioquake3
           Version: GIT MASTER
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Video
          Assignee: zachary at ioquake.org
          Reporter: mine at ukr.net
        QA Contact: quake3-bugzilla at icculus.org

Created attachment 3559
  --> https://bugzilla.icculus.org/attachment.cgi?id=3559&action=edit
Suggested solution

If you have 1280x960 resolution, for example, each mouse delta in
UI_MouseEvent( int dx, int dy ) will be actually doubled from 640x480 and
cursor movements will look choppy. 
So we should use native display resolution space and then scale all moves to
640x480 virtual UI space. Later, UI will convert them back to screen
coordinates in UI_AdjustFrom640()

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