# GLFW [![Build status](https://github.com/glfw/glfw/actions/workflows/build.yml/badge.svg)](https://github.com/glfw/glfw/actions) [![Build status](https://ci.appveyor.com/api/projects/status/0kf0ct9831i5l6sp/branch/master?svg=true)](https://ci.appveyor.com/project/elmindreda/glfw) ## Introduction GLFW is an Open Source, multi-platform library for OpenGL, OpenGL ES and Vulkan application development. It provides a simple, platform-independent API for creating windows, contexts and surfaces, reading input, handling events, etc. GLFW is written primarily in C99, with parts of macOS support being written in Objective-C. GLFW supports Windows, macOS and Linux, and also works on many other Unix-like systems. On Linux both Wayland and X11 are supported. GLFW is licensed under the [zlib/libpng license](https://www.glfw.org/license.html). You can [download](https://www.glfw.org/download.html) the latest stable release as source or Windows and macOS binaries. There are [release tags](https://github.com/glfw/glfw/releases) with source and binary archives attached for every version since 3.0. The [documentation](https://www.glfw.org/docs/latest/) is available online and is also included in source and binary archives, except those generated automatically by Github. The documentation contains guides, a tutorial and the API reference. The [release notes](https://www.glfw.org/docs/latest/news.html) list the new features, caveats and deprecations in the latest release. The [version history](https://www.glfw.org/changelog.html) lists every user-visible change for every release. GLFW exists because of the contributions of [many people](CONTRIBUTORS.md) around the world, whether by reporting bugs, providing community support, adding features, reviewing or testing code, debugging, proofreading docs, suggesting features or fixing bugs. ## System requirements GLFW supports Windows 7 and later and macOS 10.11 and later. On GNOME Wayland, window decorations will be very basic unless the [libdecor](https://gitlab.freedesktop.org/libdecor/libdecor) package is installed. Linux and other Unix-like systems running X11 are supported even without a desktop environment or modern extensions, although some features require a clipboard manager or a modern window manager. See the [compatibility guide](https://www.glfw.org/docs/latest/compat.html) for more detailed information. ## Compiling GLFW GLFW supports compilation with Visual C++ (2013 and later), GCC and Clang. Both Clang-CL and MinGW-w64 are supported. Other C99 compilers will likely also work, but this is not regularly tested. There are [pre-compiled binaries](https://www.glfw.org/download.html) available for Windows and macOS. GLFW itself needs only CMake and the headers and libraries for your operating system and window system. No other SDKs are required. See the [compilation guide](https://www.glfw.org/docs/latest/compile.html) for more information about compiling GLFW and the exact dependencies required for each window system. The examples and test programs depend on a number of tiny libraries. These are bundled in the `deps/` directory. The repository has no submodules. - [getopt\_port](https://github.com/kimgr/getopt_port/) for examples with command-line options - [TinyCThread](https://github.com/tinycthread/tinycthread) for threaded examples - [glad2](https://github.com/Dav1dde/glad) for loading OpenGL and Vulkan functions - [linmath.h](https://github.com/datenwolf/linmath.h) for linear algebra in examples - [Nuklear](https://github.com/Immediate-Mode-UI/Nuklear) for test and example UI - [stb\_image\_write](https://github.com/nothings/stb) for writing images to disk The documentation is generated with [Doxygen](https://doxygen.org/) when the library is built, provided CMake could find a sufficiently new version of it during configuration. ## Using GLFW See the [HTML documentation](https://www.glfw.org/docs/latest/) for a tutorial, guides and the API reference. ## Contributing to GLFW See the [contribution guide](https://github.com/glfw/glfw/blob/master/docs/CONTRIBUTING.md) for more information. The `master` branch is the stable integration branch and _should_ always compile and run on all supported platforms. Details of a newly added feature, including the public API, may change until it has been included in a release. The `latest` branch is equivalent to the [highest numbered](https://semver.org/) release, although it may not always point to the same commit as the tag for that release. The `ci` branch is used to trigger continuous integration jobs for code under testing and should never be relied on for any purpose. ## Reporting bugs Bugs are reported to our [issue tracker](https://github.com/glfw/glfw/issues). Please check the [contribution guide](https://github.com/glfw/glfw/blob/master/docs/CONTRIBUTING.md) for information on what to include when reporting a bug. ## Changelog since 3.4 - Added `GLFW_UNLIMITED_MOUSE_BUTTONS` input mode that allows mouse buttons beyond the limit of the mouse button tokens to be reported (#2423) - Added `glfwGetEGLConfig` function to query the `EGLConfig` of a window (#2045) - Added `glfwGetGLXFBConfig` function to query the `GLXFBConfig` of a window (#1925) - Updated minimum CMake version to 3.16 (#2541) - Removed support for building with original MinGW (#2540) - [Win32] Removed support for Windows XP and Vista (#2505) - [Cocoa] Added `QuartzCore` framework as link-time dependency - [Cocoa] Removed support for OS X 10.10 Yosemite and earlier (#2506) - [Wayland] Bugfix: The fractional scaling related objects were not destroyed - [Wayland] Bugfix: `glfwInit` would segfault on compositor with no seat (#2517) - [Wayland] Bugfix: A drag entering a non-GLFW surface could cause a segfault - [Wayland] Bugfix: Ignore key repeat events when no window has keyboard focus (#2727) - [Wayland] Bugfix: Reset key repeat timer when window destroyed (#2741,#2727) - [Wayland] Bugfix: Memory would leak if reading a data offer failed midway - [Wayland] Bugfix: Retrieved cursor position would be incorrect when hovering over fallback decorations - [Wayland] Bugfix: Fallback decorations would report scroll events - [Wayland] Bugfix: Keyboard repeat events halted when any key is released (#2568) - [Wayland] Bugfix: Fallback decorations would show menu at wrong position - [Wayland] Bugfix: The cursor was not updated when clicking through from a modal to a fallback decoration - [Wayland] Bugfix: The cursor position was not updated when clicking through from a modal to the content area - [X11] Bugfix: Running without a WM could trigger an assert (#2593,#2601,#2631) - [Null] Added Vulkan 'window' surface creation via `VK_EXT_headless_surface` - [Null] Added EGL context creation on Mesa via `EGL_MESA_platform_surfaceless` - [EGL] Allowed native access on Wayland with `GLFW_CONTEXT_CREATION_API` set to `GLFW_NATIVE_CONTEXT_API` (#2518) ## Contact On [glfw.org](https://www.glfw.org/) you can find the latest version of GLFW, as well as news, documentation and other information about the project. If you have questions related to the use of GLFW, we have a [forum](https://discourse.glfw.org/). If you have a bug to report, a patch to submit or a feature you'd like to request, please file it in the [issue tracker](https://github.com/glfw/glfw/issues) on GitHub. Finally, if you're interested in helping out with the development of GLFW or porting it to your favorite platform, join us on the forum or GitHub.