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While Cycles already supports using both CPU and GPU at the same time, there currently is a large problem with it: Since the CPU grabs one tile per thread, at the end of the render the GPU runs out of new work but the CPU still needs quite some time to finish its current times. Having smaller tiles helps somewhat, but especially OpenCL rendering tends to lose performance with smaller tiles. Therefore, this commit adds support for tile stealing: When a GPU device runs out of new tiles, it can signal the CPU to release one of its tiles. This way, at the end of the render, the GPU quickly finishes the remaining tiles instead of having to wait for the CPU. Thanks to AMD for sponsoring this work! Differential Revision: https://developer.blender.org/D9324
.. 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.