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A Bump node without a Height input is meaningless and does nothing. As such, it is available as an old workaround that allows making Node Group inputs that default to normal when not connected, by routing via a no-op Bump node before doing math. Cycles specifically recognizes this use case and either bypasses the node, or converts it into a Geometry Normal node, but Eevee was still evaluating it as usual. That incurred performance cost, and also normalized the vector unlike Cycles. This implements the same bypass logic for Eevee. Since I'm not sure if it's possible to totally remove the node at this stage, it emits a no-op function call to copy the input vector. Differential Revision: https://developer.blender.org/D14045
.. 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.