Sergey Sharybin d955ce1170 Fix T86591: Tracking backwards is slower
The root of the issue was caused by the PredictMarkerPosition()
always returning false when tracking backwards. This was making
it so tracker always had to run brute initialization, which is
an expensive operation.

From own timing here:

- Tracking forward takes 0.667637 seconds
- Tracking backward used to take 2.591856 seconds
- Tracking backward now takes 0.827724 seconds

This is a very nice speedup, although the tracking backwards is
still somewhat slower. Will be investigated further as part of
a regular development.
2021-03-22 15:20:13 +01:00
2021-03-22 14:25:42 +11:00
2021-03-22 12:23:25 +01:00
2021-03-22 11:35:19 +01:00
2010-10-13 14:44:22 +00:00
2019-04-13 14:45:51 +02:00

.. 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.
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