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Documentation work
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Camilla Berglund
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README.md
18
README.md
@ -10,16 +10,18 @@ GLFW is an Open Source, multi-platform library for OpenGL, OpenGL ES and Vulkan
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application development. It provides a simple, platform-independent API for
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creating windows, contexts and surfaces, reading input, handling events, etc.
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The current stable release is version 3.2. See the
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[downloads](http://www.glfw.org/download.html) page for details and files, or
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fetch the `latest` branch, which always points to the latest stable release.
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Each release starting with 3.0 also has a corresponding [annotated
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tag](https://github.com/glfw/glfw/releases) with source and binary archives.
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GLFW is licensed under the [zlib/libpng
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license](https://opensource.org/licenses/Zlib).
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This is version 3.2.1, which adds support for statically linking the Vulkan
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loader and fixes for a number of bugs that together affect all supported
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platforms.
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See the [downloads](http://www.glfw.org/download.html) page for details and
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files, or fetch the `latest` branch, which always points to the latest stable
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release. Each release starting with 3.0 also has a corresponding [annotated
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tag](https://github.com/glfw/glfw/releases) with source and binary archives.
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If you are new to GLFW, you may find the
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[tutorial](http://www.glfw.org/docs/latest/quick.html) for GLFW
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3 useful. If you have used GLFW 2 in the past, there is a
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@ -133,15 +135,15 @@ On [glfw.org](http://www.glfw.org/) you can find the latest version of GLFW, as
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well as news, documentation and other information about the project.
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If you have questions related to the use of GLFW, we have a
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[support forum](http://discourse.glfw.org/), and the IRC
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channel `#glfw` on [Freenode](http://freenode.net/).
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[forum](http://discourse.glfw.org/), and the `#glfw` IRC channel on
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[Freenode](http://freenode.net/).
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If you have a bug to report, a patch to submit or a feature you'd like to
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request, please file it in the
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[issue tracker](https://github.com/glfw/glfw/issues) on GitHub.
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Finally, if you're interested in helping out with the development of GLFW or
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porting it to your favorite platform, join us on GitHub or IRC.
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porting it to your favorite platform, join us on the forum, GitHub or IRC.
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## Acknowledgements
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@ -103,7 +103,8 @@ and only for compatibility with legacy code. GLU has been deprecated and should
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not be used in new code.
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@note GLFW does not provide any of the API headers mentioned above. They must
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be provided by your development environment or your OpenGL or OpenGL ES SDK.
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be provided by your development environment or your OpenGL, OpenGL ES or Vulkan
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SDK.
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@note None of these macros may be defined during the compilation of GLFW itself.
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If your build includes GLFW and you define any these in your build files, make
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@ -184,21 +185,35 @@ the include directory for the GLFW header and, when applicable, the
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target_link_libraries(myapp glfw)
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@endcode
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Note that it does not include GLU, as GLFW does not use it. If your application
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needs GLU, you can find it by requiring the OpenGL package.
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Note that the dependencies do not include OpenGL or GLU, as GLFW loads any
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OpenGL, OpenGL ES or Vulkan libraries it needs at runtime and does not use GLU.
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If your application calls OpenGL directly, instead of using a modern
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[extension loader library](@ref context_glext_auto) you can find it by requiring
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the OpenGL package.
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@code{.cmake}
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find_package(OpenGL REQUIRED)
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@endcode
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If GLU is found, the `OPENGL_GLU_FOUND` variable is true and the
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`OPENGL_INCLUDE_DIR` and `OPENGL_glu_LIBRARY` cache variables can be used.
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If OpenGL is found, the `OPENGL_FOUND` variable is true and the
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`OPENGL_INCLUDE_DIR` and `OPENGL_gl_LIBRARY` cache variables can be used.
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@code{.cmake}
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target_include_directories(myapp ${OPENGL_INCLUDE_DIR})
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target_link_libraries(myapp ${OPENGL_gl_LIBRARY})
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@endcode
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The OpenGL CMake package also looks for GLU. If GLU is found, the
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`OPENGL_GLU_FOUND` variable is true and the `OPENGL_INCLUDE_DIR` and
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`OPENGL_glu_LIBRARY` cache variables can be used.
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@code{.cmake}
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target_link_libraries(myapp ${OPENGL_glu_LIBRARY})
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@endcode
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@note GLU has been deprecated and should not be used in new code, but some
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legacy code requires it.
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@subsection build_link_cmake_package With CMake and installed GLFW binaries
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@ -213,30 +228,35 @@ target files generated when GLFW is installed.
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find_package(glfw3 3.2 REQUIRED)
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@endcode
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Once GLFW has been located, link against it with the `glfw` target. This adds
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all link-time dependencies of GLFW as it is currently configured, the include
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directory for the GLFW header and, when applicable, the
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[GLFW_DLL](@ref build_macros) macro.
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@code{.cmake}
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target_link_libraries(myapp glfw)
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@endcode
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Note that it does not include GLU, as GLFW does not use it. If your application
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needs GLU, you can find it by requiring the OpenGL package.
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Note that the dependencies do not include OpenGL or GLU, as GLFW loads any
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OpenGL, OpenGL ES or Vulkan libraries it needs at runtime and does not use GLU.
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If your application calls OpenGL directly, instead of using a modern
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[extension loader library](@ref context_glext_auto) you can find it by requiring
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the OpenGL package.
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@code{.cmake}
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find_package(OpenGL REQUIRED)
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@endcode
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If GLU is found, the `OPENGL_GLU_FOUND` variable is true and the
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`OPENGL_INCLUDE_DIR` and `OPENGL_glu_LIBRARY` cache variables can be used.
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If OpenGL is found, the `OPENGL_FOUND` variable is true and the
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`OPENGL_INCLUDE_DIR` and `OPENGL_gl_LIBRARY` cache variables can be used.
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@code{.cmake}
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target_include_directories(myapp ${OPENGL_INCLUDE_DIR})
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target_link_libraries(myapp ${OPENGL_gl_LIBRARY})
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@endcode
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The OpenGL CMake package also looks for GLU. If GLU is found, the
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`OPENGL_GLU_FOUND` variable is true and the `OPENGL_INCLUDE_DIR` and
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`OPENGL_glu_LIBRARY` cache variables can be used.
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@code{.cmake}
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target_link_libraries(myapp ${OPENGL_glu_LIBRARY})
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@endcode
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@note GLU has been deprecated and should not be used in new code, but some
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legacy code requires it.
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@subsection build_link_pkgconfig With makefiles and pkg-config on Unix
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@ -268,8 +288,9 @@ You can also use the `glfw3.pc` file without installing it first, by using the
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env PKG_CONFIG_PATH=path/to/glfw/src cc `pkg-config --cflags glfw3` -o myprog myprog.c `pkg-config --libs glfw3`
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@endcode
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The dependencies do not include GLU, as GLFW does not use it. On OS X, GLU is
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built into the OpenGL framework, so if you need GLU you don't need to do
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The dependencies do not include OpenGL or GLU, as GLFW loads any OpenGL, OpenGL
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ES or Vulkan libraries it needs at runtime and does not use GLU. On OS X, GLU
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is built into the OpenGL framework, so if you need GLU you don't need to do
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anything extra. If you need GLU and are using Linux or BSD, you should add the
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`glu` pkg-config package.
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@ -277,6 +298,9 @@ anything extra. If you need GLU and are using Linux or BSD, you should add the
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cc `pkg-config --cflags glfw3 glu` -o myprog myprog.c `pkg-config --libs glfw3 glu`
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@endcode
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@note GLU has been deprecated and should not be used in new code, but some
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legacy code requires it.
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If you are using the static version of the GLFW library, make sure you don't
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link statically against GLU.
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@ -80,7 +80,8 @@ Once you have a full screen window, you can change its resolution, refresh rate
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and monitor with @ref glfwSetWindowMonitor. If you just need change its
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resolution you can also call @ref glfwSetWindowSize. In all cases, the new
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video mode will be selected the same way as the video mode chosen by @ref
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glfwCreateWindow.
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glfwCreateWindow. If the window has an OpenGL or OpenGL ES context, it will be
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unaffected.
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By default, the original video mode of the monitor will be restored and the
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window iconified if it loses input focus, to allow the user to switch back to
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@ -1743,6 +1743,10 @@ GLFWAPI void glfwWindowHint(int hint, int value);
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* screen windows, including the creation of so called _windowed full screen_
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* or _borderless full screen_ windows, see @ref window_windowed_full_screen.
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*
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* Once you have created the window, you can switch it between windowed and
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* full screen mode with @ref glfwSetWindowMonitor. If the window has an
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* OpenGL or OpenGL ES context, it will be unaffected.
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*
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* By default, newly created windows use the placement recommended by the
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* window system. To create the window at a specific position, make it
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* initially invisible using the [GLFW_VISIBLE](@ref window_hints_wnd) window
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@ -2394,8 +2398,8 @@ GLFWAPI void glfwFocusWindow(GLFWwindow* window);
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* in full screen on.
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*
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* @param[in] window The window to query.
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* @return The monitor, or `NULL` if the window is in windowed mode or an error
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* occurred.
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* @return The monitor, or `NULL` if the window is in windowed mode or an
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* [error](@ref error_handling) occurred.
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*
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* @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
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*
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@ -3359,7 +3363,7 @@ GLFWAPI GLFWcharfun glfwSetCharCallback(GLFWwindow* window, GLFWcharfun cbfun);
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* @param[in] cbfun The new callback, or `NULL` to remove the currently set
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* callback.
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* @return The previously set callback, or `NULL` if no callback was set or an
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* error occurred.
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* [error](@ref error_handling) occurred.
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*
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* @errors Possible errors include @ref GLFW_NOT_INITIALIZED.
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*
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@ -3538,8 +3542,10 @@ GLFWAPI int glfwJoystickPresent(int joy);
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*
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* @param[in] joy The [joystick](@ref joysticks) to query.
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* @param[out] count Where to store the number of axis values in the returned
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* array. This is set to zero if an error occurred.
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* @return An array of axis values, or `NULL` if the joystick is not present.
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* array. This is set to zero if the joystick is not present or an error
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* occurred.
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* @return An array of axis values, or `NULL` if the joystick is not present or
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* an [error](@ref error_handling) occurred.
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*
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* @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
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* GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
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@ -3570,8 +3576,10 @@ GLFWAPI const float* glfwGetJoystickAxes(int joy, int* count);
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*
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* @param[in] joy The [joystick](@ref joysticks) to query.
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* @param[out] count Where to store the number of button states in the returned
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* array. This is set to zero if an error occurred.
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* @return An array of button states, or `NULL` if the joystick is not present.
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* array. This is set to zero if the joystick is not present or an error
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* occurred.
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* @return An array of button states, or `NULL` if the joystick is not present
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* or an [error](@ref error_handling) occurred.
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*
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* @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
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* GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
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@ -3604,7 +3612,7 @@ GLFWAPI const unsigned char* glfwGetJoystickButtons(int joy, int* count);
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*
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* @param[in] joy The [joystick](@ref joysticks) to query.
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* @return The UTF-8 encoded name of the joystick, or `NULL` if the joystick
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* is not present.
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* is not present or an [error](@ref error_handling) occurred.
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*
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* @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
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* GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR.
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