PhysX
godot-jolt
PhysX | godot-jolt | |
---|---|---|
18 | 11 | |
2,296 | 1,637 | |
2.0% | 6.0% | |
4.7 | 9.4 | |
24 days ago | 12 days ago | |
C++ | C++ | |
BSD 3-clause "New" or "Revised" License | MIT License |
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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 don’t 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
godot-jolt
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Rust Game Physics Engines: PhysX, Rapier, XPBD & Others
Some other Rust game engines ship with their own physics engine. Fyrox, for example, has advanced 2D/3D physics, supporting rigid bodies, joints, ray casting and more. Godot too, which has community-led Rust bindings also has an in-built physics engine as well as a Godot-native extension using the Jolt physics engine. In fact, which is reported to be more performant than the official physics engine.
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Godot is not the new Unity – The anatomy of a Godot API call
When the performance of Godot's physics engine has been mentioned before I've seen https://github.com/godot-jolt/godot-jolt pointed to as a drop in more performant solution.
Haven't tried it in a project yet myself
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What are the biggest issues you've faced in Godot 4.0 so far?
No idea if this will solve your problems, but with Godot 4 Physics being a bit undercooked you might want to try a different physics engine. Like Godot-Jolt: https://github.com/godot-jolt/godot-jolt
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What's missing from C# in Godot 4?
Godot 4 itself is actually fairly good about diving to its C/C++ base for the nasty stuff. Like its Physics. The reimplementation for Jolt physics into Godot 4 is again C/C++ calculation library.
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After months of work, I'm excited to share the first release of Godot Jolt, an extension that integrates the Jolt physics engine into Godot, demonstrated using GDQuest's RoboBlast
If you'd like to try out Godot Jolt for yourself, you can find the latest release, as well as important gotchas, on the project's GitHub page. Just bear in mind that the extension is still in development and will likely have a couple of bugs that have yet to be found. C# support for GDExtension is also not in a great place right now, so there are some issues there as well.
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Strange rigidbody behavior in Godot 4 - I think it's something to do with center of mass but changing it (since there is no visual marker) didn't seem to help :(
Try a different physics engine: https://github.com/godot-jolt/godot-jolt
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Added a "Breakable" node in the Nodot node library for Godot and it's been fun updating the examples
Your comment made me do a bit of research and I found this: https://github.com/godot-jolt/godot-jolt
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My Thoughts on Porting my Game to Godot 4 (800+ scenes, 30,000+ lines of code)
It's possible to create a GDExtension for it (similar to what was done for Jolt), but I haven't seen any for Bullet yet. There's a lot of hype going around Jolt, so it's understandably where most of the community effort is going :)
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Godot 4 custom physics engine?
Or godot-jolt (linked in that Tweeter thread respones).
- godot-jolt/godot-jolt: Jolt physics engine [GdExtension, Physics, Godot4]
What are some alternatives?
RayTracingDenoiser - NVIDIA Ray Tracing Denoiser
JoltPhysics - A multi core friendly rigid body physics and collision detection library, written in C++, suitable for games and VR applications.
physx-rs - 🎳 Rust binding for NVIDIA PhysX 🦀
godot_box2d - A C++ module that integrates the Box2D library with the Godot game engine by providing nodes for standard Box2D objects.
PhysX - NVIDIA PhysX SDK
godot_voxel - Voxel module for Godot Engine
AI4Animation - Bringing Characters to Life with Computer Brains in Unity
gdextension - GDExtension template that automatically builds into a self-contained addon for the Godot Asset Library. Updated to Godot 4.2.1.
box2d-lite - A small 2D physics engine
threen - Port of Godot 3's Tween to Godot 4, using GDExtension. Meant to help porting big Godot 3 projects to Godot 4.