Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
PhysX
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Blaze: A High Performance C++ Math library
For typical game physics engines... not that much. Math libraries like Eigen or Blaze use lots of template metaprogramming techniques under the hood that can help when you're doing large batched matrix multiplications (since it can remove temporary allocations at compile-time and can also fuse operations efficiently, as well as applying various SIMD optimizations), but it doesn't really help when you need lots of small operations (with mat3 / mat4 / vec3 / quat / etc.). Typical game physics engines tend to use iterative algorithms for their solvers (Gauss-Seidel, PBD, etc...) instead of batched "matrix"-oriented ones, so you'll get less benefits out of Eigen / Blaze compared to what you typically see in deep learning / scientific computing workloads.
The codebases I've seen in many game physics engines seem to all roll their own math libraries for these stuff, or even just use SIMD (SSE / AVX) intrinsics directly. Examples: PhysX (https://github.com/NVIDIA-Omniverse/PhysX), Box2D (https://github.com/erincatto/box2d), Bullet (https://github.com/bulletphysics/bullet3)...
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Rust Game Physics Engines: PhysX, Rapier, XPBD & Others
NVIDIA PhysX GitHub repo: NVIDIA-Omniverse/PhysX
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Recommended Physics Engine?
I donβt know of any books but here is the official documentation which includes an API reference. You can also find a lot of sample code snippets and examples on their GitHub.
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C# Game engine - suggestions
On the other hand, PhysX is available under the MIT License and is both heavily used in games and also well documented with tons of sample code.
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AMD Finally Opens Up Its Radeon Raytracing Analyzer "RRA" Source Code
The CPU implementation of PhysX is too, no reason you couldn't port that to run on AMD GPUs: https://github.com/NVIDIA-Omniverse/PhysX
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Nvidia PhysX 5.0 is now open source
The LICENSE.md file on the repo doesn't mention BSD-3-Clause at all, it's just a copywrite notice that reads more like CC-BY than a software license. That's why I said it was weird.
Very! I just picked a random file: https://github.com/NVIDIA-Omniverse/PhysX/blob/release/104.0/physx/source/physx/src/NpArticulationJointReducedCoordinate.cpp
- GitHub - NVIDIA-Omniverse/PhysX: NVIDIA PhysX SDK - 5.0
eigen
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Blaze: A High Performance C++ Math library
Is Eigen still alive? There's been no release in 3 years, and no news about it: https://gitlab.com/libeigen/eigen/-/issues/2699
- Gentoo -Os vs -O3 application startup time?
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The Case of the Missing SIMD Code
I was curious about these libraries a few weeks ago and did some searching. Is there one that's got a clearly dominating set of users or contributors?
I don't know what a good way to compare these might be, other than perhaps activity/contributor count.
[1] https://github.com/simd-everywhere/simde
[2] https://github.com/ermig1979/Simd
[3] https://github.com/google/highway
[4] https://gitlab.com/libeigen/eigen
[5] https://github.com/shibatch/sleef
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FetchContent and PROJECT_IS_TOP_LEVEL
I am trying to include Eigen in my project via FetchContent. They define/assume-defined PROJECT_IS_TOP_LEVEL on line 19 and, among other locations, on line 607 in their top level list file.
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Common practices when doing image processing on the GPU
Eigen is a header-only library, thus simply cloning it from the official repository into the FOGGDD folder should be enough.
- Use TFlite in a Cmake Project
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I've decided to learn Godot and it feels like I have "lost"
math library because you should never implement a math library yourself, and you probably want somethign more focused on performance than STL. GLM may work if you just need basic vector support. Eigen may help for a more physics heavy game. But I'd probably find something in-between those two
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CMake: How to include the headers of an external library downloaded with FetchContent?
cmake_minimum_required(VERSION 3.15) project(app) include(FetchContent) FetchContent_Declare(Eigen3 URL https://gitlab.com/libeigen/eigen/-/archive/3.4.0/eigen-3.4.0.tar.gz) FetchContent_MakeAvailable(Eigen3) add_executable(app main.cpp) target_link_libraries(app Eigen3::Eigen)
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-π- 2021 Day 13 Solutions -π-
Today was very easy to do with Eigen
- The official Eigen repo is now back online
What are some alternatives?
RayTracingDenoiser - NVIDIA Ray Tracing Denoiser
NumCpp - C++ implementation of the Python Numpy library
physx-rs - π³ Rust binding for NVIDIA PhysX π¦
mathfu - C++ math library developed primarily for games focused on simplicity and efficiency.
PhysX - NVIDIA PhysX SDK
embree-aarch64 - AARCH64 port of Embree ray tracing library
JoltPhysics - A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West.
parallel-hashmap - A family of header-only, very fast and memory-friendly hashmap and btree containers.
AI4Animation - Bringing Characters to Life with Computer Brains in Unity
colmap - COLMAP - Structure-from-Motion and Multi-View Stereo
box2d-lite - A small 2D physics engine
CppRobotics - Header-only C++ library for robotics, control, and path planning algorithms. Work in progress, contributions are welcome!