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test2/extern/fmtlib/README.blender

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OBJ: use fmt library instead of sprintf for faster formatting 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
2022-03-27 14:25:48 +03:00
Project: {fmt}
URL: https://github.com/fmtlib/fmt
Add license and copyright information for external dependencies This is being added straight to 4.2, prior to the `make license` command which will use this to generate a more complete license file. Licenses information and ambiguities worked with Dalai Felinto. Part of !129018.
2024-10-18 16:06:05 +02:00
License: SPDX:MIT
Externals: update fmtlib to latest version (10.1.1) The library is used by OBJ/PLY/STL exporters, and several other parts. Performance of OBJ/PLY export seems to be the same.
2023-11-21 10:42:44 +02:00
Upstream version: 10.1.1 (f5e5435, 2023 Aug 28)
Add license and copyright information for external dependencies This is being added straight to 4.2, prior to the `make license` command which will use this to generate a more complete license file. Licenses information and ambiguities worked with Dalai Felinto. Part of !129018.
2024-10-18 16:06:05 +02:00
Copyright: "Copyright (c) 2012 - present, Victor Zverovich and {fmt} contributors"
OBJ: use fmt library instead of sprintf for faster formatting 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
2022-03-27 14:25:48 +03:00
Local modifications:
Externals: compile fmtlib as a library instead of using it with FMT_HEADER_ONLY
2023-05-30 11:17:23 +03:00
- Took only files needed for Blender:
- LICENSE, README
- include/fmt: core.h, format-inl.h, format.h
- src/format.cc
- CMakeLists.txt is not from fmtlib, but
made for Blender codebase
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