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On Windows/MSVC this gives a minor (~20%) speedup presumably due to a faster float/int formatter. On macOS (Xcode13), this gives a massive speedup, since snprintf that is in system libraries ends up spending almost all the time inside some locale-related mutex lock. The actual exporter code becomes quite a bit smaller too, since it does not have to do any juggling to support std::string arguments, and the buffer handling code is smaller as well. Windows (VS2022 release build, Ryzen 5950X 32 threads) timings: - Blender 3.0 splash scene (2.4GB obj): 4.57s -> 3.86s - Monkey subdivided level 6 (330MB obj): 1.10s -> 0.99s macOS (Xcode 13 release build, Apple M1Max) timings: - Blender 3.0 splash scene (2.4GB obj): 21.03s -> 5.52s - Monkey subdivided level 6 (330MB obj): 3.28s -> 1.20s Linux (ThreadRipper 3960X 48 threads) timings: - Blender 3.0 splash scene (2.4GB obj): 10.10s -> 4.40s - Monkey subdivided level 6 (330MB obj): 2.16s -> 1.37s The produced obj/mtl files are identical to before. Reviewed By: Howard Trickey, Dalai Felinto Differential Revision: https://developer.blender.org/D13998 |
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| .. | ||
| Apache-2.0.txt | ||
| bfont.ttf.txt | ||
| bmonofont-i18n.ttf.txt | ||
| BSD-3-Clause.txt | ||
| BSL-1.0.txt | ||
| droidsans.ttf.txt | ||
| FTL.txt | ||
| GPL-3.0.txt | ||
| GPL-license.txt | ||
| jemalloc.txt | ||
| MIT.txt | ||
| OpenColorIO.txt | ||
| OpenSSL.txt | ||
| Python.txt | ||
| THIRD-PARTY-LICENSES.txt | ||