explaingit

bkaradzic/bgfx

★ 17,029CAudience · developerComplexity · 4/5Setup · hard

TLDR

A cross-platform rendering library that lets your game or app draw graphics using a single API instead of writing separate code for DirectX, Metal, Vulkan, OpenGL, and WebGL on each platform.

Mindmap

mindmap
  root((bgfx))
    What it does
      Cross-platform rendering
      Single unified API
      No full engine
    Rendering backends
      DirectX 11 and 12
      Metal and Vulkan
      OpenGL and WebGL
    Platforms
      Windows and macOS
      iOS and Android
      WebAssembly
    Language bindings
      C and C++
      Rust and Python
      Go and Zig
Click or tap to explore — scroll the page freely

Code map

Detail Auto

An interactive map of this repo's files and how they connect — its source is parsed live in your browser. Click Visualize to build it.

filefunction / class

Things people build with this

USE CASE 1

Write a cross-platform game that runs on Windows, macOS, iOS, and Android from a single rendering codebase.

USE CASE 2

Build a 3D editor or visualizer that works across desktop and browser without platform-specific graphics code.

USE CASE 3

Port a graphics app to WebAssembly via Emscripten using bgfx's WebGL or WebGPU backend.

USE CASE 4

Use bgfx as the rendering layer in a custom C++ game engine while supplying your own audio, input, and game logic.

Tech stack

CC++VulkanMetalDirectXOpenGLWebGL

Getting it running

Difficulty · hard Time to first run · 1h+

Requires graphics programming knowledge (shaders, draw calls) and the shaderc shader compiler, no full engine included.

License information is not mentioned in the repository description.

In plain English

bgfx is a cross-platform rendering library, written mostly in C and C++. A rendering library is the layer of code in a game or graphics-heavy app that talks to the graphics card and draws pictures on the screen. Each operating system and graphics card vendor exposes its own way of doing this, so software that wants to run everywhere normally has to deal with several systems by hand. bgfx hides those differences behind a single API, so the program above it can ask for triangles, textures, and shaders without caring which underlying system is drawing. The README calls it a Bring Your Own Engine/Framework style library, meaning it deliberately does not try to be a full game engine. It only does the rendering part, and leaves things like input, audio, and game logic to whatever framework you bring around it. The supported rendering backends include Direct3D 11 and 12, Metal, OpenGL 2.1 and 3.1+, OpenGL ES 2 and 3.1, Vulkan, WebGL 1.0 and 2.0, and WebGPU through Dawn Native, plus GNM for licensed PlayStation 4 developers. Supported platforms include Android, iOS, iPadOS and tvOS, Linux, macOS, PlayStation 4, RaspberryPi, UWP (Universal Windows and Xbox One), Wasm via Emscripten, and Windows. The official API is C/C++ with community bindings for languages such as C#, D, Go, Haskell, Java via LWJGL, Lua, Nim, Pascal, Python, Rust, Swift, Zig, Beef and C3. You would reach for bgfx when writing a cross-platform game, editor, simulator, or visualizer and you want one consistent rendering API instead of writing separate paths for each platform's native graphics stack. The README highlights games and tools using bgfx, including AirMech, Crown, ioquake3, MAME, and Blackshift.

Copy-paste prompts

Prompt 1
Show me the minimal C++ code to open a window and draw a colored triangle using bgfx on Windows with the DirectX 11 backend.
Prompt 2
How do I set up a CMake project with bgfx that compiles for both macOS (Metal) and WebAssembly (WebGL) from the same source?
Prompt 3
I want to render a textured quad in bgfx using the C API so I can call it from Python bindings. Write the C code.
Prompt 4
Walk me through compiling shaders for bgfx using the shaderc tool and loading them at runtime in a C++ app.
Open on GitHub → Explain another repo

← bkaradzic on gitmyhub — every repo by this author, as a profile.

Verify against the repo before relying on details.