glfw/README.md
Camilla Löwy ad206bdaee Wayland: Fix crash if mouse connected after init
The cursor theme was only loaded if the chosen seat had a mouse
(wl_pointer) during initialization.  If a mouse was connected only after
glfwInit, there would be no cursor theme but the rest of the cursor
related code assumed one had already been loaded.

This also moves the details of cursor theme loading out into a separate
function to declutter platform init.

Because the original cursor theme loading code checked whether we got
a wl_shm, and because the rest of the code just assumes we have
a wl_shm, initialization will now fail if there isn't one.

Fixes #1450

(cherry picked from commit 71be34a6c3)
2022-10-31 21:11:11 +01:00

146 lines
5.8 KiB
Markdown

# GLFW
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## 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 natively supports Windows, macOS and Linux and other Unix-like systems. On
Linux both X11 and Wayland 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 binaries, or fetch the `latest` branch from GitHub. Each
release starting with 3.0 also has a corresponding [annotated
tag](https://github.com/glfw/glfw/releases) with source and binary archives.
The [documentation](https://www.glfw.org/docs/latest/) is available online and is
included in all source and binary archives. See the [release
notes](https://www.glfw.org/docs/latest/news.html) for new features, caveats and
deprecations in the latest release. For more details see the [version
history](https://www.glfw.org/changelog.html).
The `master` branch is the stable integration branch and _should_ always compile
and run on all supported platforms, although details of newly added features may
change until they have been included in a release. New features and many bug
fixes live in [other branches](https://github.com/glfw/glfw/branches/all) until
they are stable enough to merge.
If you are new to GLFW, you may find the
[tutorial](https://www.glfw.org/docs/latest/quick.html) for GLFW 3 useful. If
you have used GLFW 2 in the past, there is a [transition
guide](https://www.glfw.org/docs/latest/moving.html) for moving to the GLFW
3 API.
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.
## Compiling GLFW
GLFW itself requires only the headers and libraries for your OS and window
system. It does not need the headers for any context creation API (WGL, GLX,
EGL, NSGL, OSMesa) or rendering API (OpenGL, OpenGL ES, Vulkan) to enable
support for them.
GLFW supports compilation on Windows with Visual C++ 2010 and later, MinGW and
MinGW-w64, on macOS with Clang and on Linux and other Unix-like systems with GCC
and Clang. It will likely compile in other environments as well, but this is
not regularly tested.
There are [pre-compiled Windows binaries](https://www.glfw.org/download.html)
available for all supported compilers.
See the [compilation guide](https://www.glfw.org/docs/latest/compile.html) for
more information about how to compile GLFW yourself.
## Using GLFW
See the [documentation](https://www.glfw.org/docs/latest/) for tutorials, 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.
## System requirements
GLFW supports Windows XP and later and macOS 10.8 and later. Linux and other
Unix-like systems running the X Window System are supported even without
a desktop environment or modern extensions, although some features require
a running window or clipboard manager. The OSMesa backend requires Mesa 6.3.
See the [compatibility guide](https://www.glfw.org/docs/latest/compat.html)
in the documentation for more information.
## Dependencies
GLFW itself depends only on the headers and libraries for your window system.
The (experimental) Wayland backend also depends on the `extra-cmake-modules`
package, which is used to generate Wayland protocol headers.
The examples and test programs depend on a number of tiny libraries. These are
located in the `deps/` directory.
- [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/) if CMake can
find that tool.
## 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
- [Wayland] Bugfix: Connecting a mouse after `glfwInit` would segfault (#1450)
- [Linux] Bugfix: Joysticks without buttons were ignored (#2042,#2043)
## 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/), and the `#glfw` IRC channel on
[Libera.Chat](https://libera.chat/).
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, GitHub or IRC.