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Intermediate Graphics Library (IGL) is a cross-platform library that commands the GPU. It encapsulates common GPU functionality with a low-level cross-platform interface. IGL is designed to support multiple backends implemented on top of various graphics APIs (e.g. OpenGL, Metal and Vulkan) with a common interface.

There are a lot of good options for abstracting GPU API's; each making different trade-offs. We designed IGL around the following priorities:

Low-level, forward-looking API. IGL embraces modern abstractions (command buffers, state containers, bindless, etc) and is designed to give more control than OpenGL's state machine API. As a result, IGL can have leaner backends for modern API's (e.g. Metal, Vulkan).
Minimal overhead for C++. IGL supports new or existing native rendering code without overhead of language interop or the need for other language runtimes.
Reach + scale in production. IGL has been globally battle-tested for broad device reliability (especially the long-tail of Android devices as well as Quest 2/3/Pro compatibility for OpenGL/Vulkan) and performance-tuned on our apps.

Supported rendering backends

Metal 2+
OpenGL 2.x (requires GL_ARB_framebuffer_object)
OpenGL 3.1+
OpenGL ES 2.0+
Vulkan 1.2
WebGL 2.0

Supported platforms

Android
iOS
Linux
macOS
Windows
WebAssembly

API Support

| | Windows | Linux | macOS | iOS | Android | | ------------------------ | -------------------------- | -------------------------- | ----------------------------- | ----------------------------- | ---------------------------------- | | Vulkan 1.2 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: (MoltenVK) | :heavy_multiplication_x: | :heavy_check_mark: (Quest 2/3/Pro) | | OpenGL ES 2.0 - 3.0 | :heavy_check_mark: (Angle) | :heavy_check_mark: (Angle) | :heavy_multiplication_x: | :heavy_check_mark: | :heavy_check_mark: | | OpenGL ES 3.1 - 3.2 | :heavy_check_mark: (Angle) | :heavy_check_mark: (Angle) | :heavy_multiplication_x: | :heavy_multiplication_x: | :heavy_check_mark: | | OpenGL 3.1 - 4.6 | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_multiplication_x: | :heavy_multiplication_x: | | Metal 2 | :heavy_multiplication_x: | :heavy_multiplication_x: | :heavy_check_mark: | :heavy_check_mark: | :heavy_multiplication_x: |

Build

Before building, run the deployment scripts:

python3 deploy_content.py
python3 deploy_deps.py

These scripts download external third-party dependencies. Please check Dependencies for the full list.

Windows

cd build
cmake .. -G "Visual Studio 17 2022"

Linux

sudo apt-get install clang xorg-dev libxinerama-dev libxcursor-dev libgles2-mesa-dev libegl1-mesa-dev libglfw3-dev libglew-dev libstdc++-12-dev
cd build
cmake .. -G "Unix Makefiles"

macOS

cd build
cmake .. -G "Xcode" -DIGL_WITH_VULKAN=OFF

cd build
cmake .. -G Xcode -DCMAKE_TOOLCHAIN_FILE=../third-party/deps/src/ios-cmake/ios.toolchain.cmake -DDEPLOYMENT_TARGET=13.0 -DPLATFORM=OS64

Android

The Gradle project is located within the build/android folder.

WebAssembly

Please install Emscripten and Ninja.

cd build
emcmake cmake .. -G Ninja
cmake --build .

Screenshots

License

IGL is released under the MIT license, see LICENSE.md for the full text as well as third-party library acknowledgements. SparkSL Compiler is released under the SparkSL Compiler License, see LICENSE for full text.

Igl

Install / Use

README