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Main motivation is from T54314 where there was no way to read from a Viewer image datablock after the compositor has run. The only solution there was to do a full rerender (which obviously takes much longer). Adding a handler avoids having to rerender. This uses new syntax from rBf4456a4d3c97 and also adds "COMPOSITE" as a job type that can be queried by `bpy.app.is_job_running`. NOTE: there is another issue when multiple viewers are used and these get active via RNA (compo execution is not triggered there yet -- unlike when a viewer is selected in the Editor -- this is an issue of `ED_node_set_active` vs. only `nodeSetActive`, but this will be tackled separately) Maniphest Tasks: T54314 Differential Revision: https://developer.blender.org/D15078
.. 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 General 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.