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This was caused by 2 things: Shadow map bias and aliasing. It made the expected depth of the shadowmap further than the surface itself in some cases. In normal time this leads to light leaking on normal shadow mapping but here we need to always have the shadowmap depth above the shading point. To fix this, we use a 5 tap inflate filter using the minimum depth of all 5 samples. Using these 5 taps, we can deduce entrance surface derivatives and there orientation towards the light ray. We use these derivatives to bias the depth to avoid wrong depth at depth discontinuity in the shadowmap. This bias can lead to some shadowleaks that are less distracting than the lightleaks it fixes. We also add a small bias to counteract the shadowmap depth precision.
.. 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.