bgfx
entt
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bgfx | entt | |
---|---|---|
71 | 78 | |
14,194 | 9,351 | |
- | - | |
9.3 | 9.8 | |
about 1 hour ago | 6 days ago | |
C++ | C++ | |
BSD 2-clause "Simplified" License | MIT License |
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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.
bgfx
- WebKit Switching to Skia for 2D Graphics Rendering
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Is it possible and realistic to learn independent of an API?
Sort of, I'd recommend a modern higher level API. I'm not sure what the current recommended ones are (probably bgfx), but assuming the wrapper is "low level enough", then the concepts you learn are still going to apply.
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Ask HN: Released games built on FOSS engines?
https://github.com/bkaradzic/bgfx for just that FOSS intermediate rendering library (includes Minecraft)
- Valve Says Counter-Strike 2 for macOS Not Happening, There Aren't Enough Players
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The Ultimate Cross-Platform Rendering Engine?
BGFX: Pretty mature and easy to use with many backends.
- Cairo – Open-Source 2D Graphics Layer/API with Fonts and Many Back-Ends
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LWJGL = SFML vs Allegro vs SDL vs Ogre vs ???
There's kind of a lack of this for C++ in 3D, I think it's often due to the necessity of a secondary scripting language in game engines with C++, which isn't necessarily needed in Java or C#. SFML is like that (but also 2D), Godot is similar (but more geared towards 2D). Ogre3D is an actual engine like I mentioned earlier, not sure how easy it is to use. Cocos2d is higher level, but is also 2D only. I'm not fond of SDL, it feels like a windowing library with slow old school immediate mode stuff attached, so it ends up not being good at the rest of the tacked on things. SDL is popular as a windowing library, and it's why you see it used everywhere (but the most notable uses of it aren't using their drawing capabilities), I often see bgfx thrown around, and for you it might be a good choice, though I have no experience with it.
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Is it a crazy idea to create a 3D operating system?
Another route could be using an abstraction over Vulkan (faster, more efficient, more difficult): bgfx, dawn, magma, or wgpu (Rust).
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The update we all want but will never get
my guess for why renderdragon made performance worse is because old bedrock was built on bgfx which is a layer of abstraction ontop of a bunch of graphics apis which benefits the programmer because they can write the graphics code once and use it on a bunch of graphics apis (just like java! i heart cross compatibility)
now, java is actually quite a performant language and even if its not most of the performance bugs in mc are due to it being single threaded, inefficient chunk generation and optimizing, and it built ontop of opengl WHICH isn't much of a performance hit but its still ehh idk it doesn't matter that much (NOW SWITCHING THE GAME TO AN ENTIRELY DIFFERENT GRAPHICS API WOULD SUCK ASS TO DO (and vulkan is quite verbose :))) (AND also bgfx would probably be better due to it being an abstraction layer ontop of all the graphics apis so minecraft could target many depending on your platform (and also bedrock used to (or still does i dont know) use bgfx before they switched to just two (IF IM READING MC WIKI RIGHT BECAUSE IM NOT ENTIRELY SURE IF THEY USE BGFX STILL ?? SO THEY COULD STILL BE TARGETING MULTIPLE YET THEY JUST WROTE THEIR NEW SHIT BAD IDK))
entt
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Focus: A simple and fast text editor written in Jai
https://pastebin.com/VPypiitk This is a very small experiment i did to learn the metaprogramming features. its an ECS library using the same model as entt (https://github.com/skypjack/entt). In 200 lines or so it does the equivalent of a few thousand lines of template heavy Cpp while compiling instantly and generating good debug code.
Some walkthrough:
Line 8 declares a SparseSet type as a fairly typical template. its just a struct with arrays of type T inside. Next lines implement getters/setters for this data structure
Line 46 Base_Registry things get interesting. This is a struct that holds a bunch of SparseSet of different types, and providers getters/setters for them by type. It uses code generation to do this. The initial #insert at the start of the class injects codegen that creates structure members from the type list the struct gets on its declaration. Note also how type-lists are a native structure in the lang, no need for variadics.
Line 99 i decide to do variadic style tail templates anyway for fun. I implement a function that takes a typelist and returns the tail, and the struct is created through recursion as one would do in cpp. Getters and setters for the View struct are also implemented through recursion
Line 143 has the for expansion. This is how you overload the for loop functionality to create custom iterators.
The rest of the code is just some basic test code that runs the thing.
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Introducing Ecsact
Since we wanted a common game simulation that would be on both the server and the client we looked into a few libraries that would fit our ECS needs. It was decided we were going to write this common part of our game in C++, but rust was considered. C++ was a familiar language for us so naturally EnTT and flecs came up right away. I had used EnTT before, writing some small demo projects, so our choice was made based on familiarity. In order to integrate with Unity we created a small C interface to communicate between our simulation code and Unity’s C#. Here’s close to what it looked like. I removed some parts for brevity sake.
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Sharing Saturday #472
Are you sure you don't want to use a C++ package manager? Libtcod is on Vcpkg and with that setup you could add the fmt library or EnTT. fmt fixes C++'s string handling and EnTT fixes everything wrong with the entities of the previous tutorials.
- Where can I find the juiciest, most complex and modern c++ code?
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What are the limits of blueprints?
There's also a performance question. While we can now use Blueprint nativization to convert Blueprints to C++ the result will be a fairly naive version, fast enough for most purposes but not if you're trying to push every bit of performance. This is where you're looking at making sure you're hitting things such as using the CPU cache as well as possible for an ECS system (Look at ENTT or Flecs if you want to see what they're about and why you'd want one), or a system needing to process massive amounts of data quickly such as the Voxel Plugin.
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any resources for expanding on ECS?
For a modern engine you’re probably best looking at Unity’s DOTS. You may also want to check out some of the different open source ECS libraries such as flecs and EnTT are two popular ones for C++, but there’s lots of them. Largely you’ll see lots of different approaches taken, all with their own pros and cons. Not all of them will be performant (some focus more on the design benefits) while others will be optimised for certain use cases. What you should prioritise will depend on your specific needs.
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DynaMix 2.0.0 Released
You can think of DynaMix as combining one of these libraries with an ECS like entt(https://github.com/skypjack/entt)
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Flecs – A fast entity component system for C and C++
https://github.com/skypjack/entt is a fantastic alternative; also, one of the most beautiful codebases/elegant designs I 've come across.
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Please roast my ECS implementation
As a way to force myself to learn more about game engines I've created asimov-ts. While doing it, I tried to refrain from looking at other ECS implementations as much as possible and use only more theoretical sources. As a result, I think it's a bit different from other stuff I've seen like EnTT and bevy_ecs.
What are some alternatives?
flecs - A fast entity component system (ECS) for C & C++
GLFW - A multi-platform library for OpenGL, OpenGL ES, Vulkan, window and input
DiligentEngine - A modern cross-platform low-level graphics library and rendering framework
magnum - Lightweight and modular C++11 graphics middleware for games and data visualization
Ogre 3D - scene-oriented, flexible 3D engine (C++, Python, C#, Java)
sokol - minimal cross-platform standalone C headers
The-Forge - The Forge Cross-Platform Rendering Framework PC Windows, Steamdeck (native), Ray Tracing, macOS / iOS, Android, XBOX, PS4, PS5, Switch, Quest 2
Skia - Skia is a complete 2D graphic library for drawing Text, Geometries, and Images.
raylib - A simple and easy-to-use library to enjoy videogames programming
wgpu - Cross-platform, safe, pure-rust graphics api.
urho3d - Game engine
OpenSceneGraph - OpenSceneGraph git repository