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Windows mouse history function GetMouesMovePointsEx has well documented bugs where it receives and returns 32 bit screen coordinates, but internally truncates to unsigned 16 bits. For mouse (relative position) input this is not a problem as motion events and the resulting screen coordinates reliably fit within 16 bit precision. For tablets (absolute position) the 16 bit truncation results in corrupt history when tablet drivers use mouse_event or SendInput from the Windows API to move the mouse cursor. Both of these functions take absolute mouse position as singed 32 bit value on the range of 0-65535 (or 0x0-0xFFFF) inclusive. Values larger than 0x7FFF (the largest signed 16 bit value) are reliably corrupt when retrieved from GetMouesMovePointsEx history. This is true regardless of whether mouse history is retrieved using display resolution (GMMP_USE_DISPLAY_POINTS) or high resolution points (GMMP_USE_HIGH_RESOLUTION_POINTS), the latter of which should return points in range 0-65535. Reviewed By: brecht Maniphest Tasks: T85874 Differential Revision: https://developer.blender.org/D10507
.. Keep this document short & concise, linking to external resources instead of including content in-line. See 'release/text/readme.html' for the end user read-me. Blender ======= Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline-modeling, rigging, animation, simulation, rendering, compositing, motion tracking and video editing. .. figure:: https://code.blender.org/wp-content/uploads/2018/12/springrg.jpg :scale: 50 % :align: center Project Pages ------------- - `Main Website <http://www.blender.org>`__ - `Reference Manual <https://docs.blender.org/manual/en/latest/index.html>`__ - `User Community <https://www.blender.org/community/>`__ Development ----------- - `Build Instructions <https://wiki.blender.org/wiki/Building_Blender>`__ - `Code Review & Bug Tracker <https://developer.blender.org>`__ - `Developer Forum <https://devtalk.blender.org>`__ - `Developer Documentation <https://wiki.blender.org>`__ License ------- Blender as a whole is licensed under the GNU Public License, Version 3. Individual files may have a different, but compatible license. See `blender.org/about/license <https://www.blender.org/about/license>`__ for details.