7484f274dc
This commit changes the Curve to Mesh node to work with `Curves` instead of `CurveEval`. The change ends up basically completely rewriting the node, since the different attribute storage means that the decisions made previously don't make much sense anymore. The main loops are now "for each attribute: for each curve combination" rather than the other way around, with the goal of taking advantage of the locality of curve attributes. This improvement is quite noticeable with many small curves; I measured a 4-5x improvement (around 4-5s to <1s) when converting millions of curves to tens of millions of faces. I didn't obverse any change in performance compared to 3.1 with fewer curves though. The changes also solve an algorithmic flaw where any interpolated attributes would be evaluated for every curve combination instead of just once per curve. This can be a large improvement when there are many profile curves. The code relies heavily on a function `foreach_curve_combination` which calculates some basic information about each combination and calls a templated function. I made assumptions about unnecessary reads being removed by compiler optimizations. For further performance improvements in the future that might be an area to investigate. Another might be using a "for a group of curves: for each attribute: for each curve" pattern to increase the locality of memory access. Differential Revision: https://developer.blender.org/D14642 |
||
|---|---|---|
| .github | ||
| build_files | ||
| doc | ||
| extern | ||
| intern | ||
| release | ||
| source | ||
| tests | ||
| .arcconfig | ||
| .clang-format | ||
| .clang-tidy | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitignore | ||
| .gitmodules | ||
| CMakeLists.txt | ||
| COPYING | ||
| GNUmakefile | ||
| make.bat | ||
| readme.rst | ||
.. 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.