Documentation work
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Camilla Berglund
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.github/CONTRIBUTING.md
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.github/CONTRIBUTING.md
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# Contribution Guide
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This file is a work in progress and you can report errors or submit patches for
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it the same as any other file.
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## Contents
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- [Reporting a bug](#reporting-a-bug)
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- [Reporting a compile or link bug](#reporting-a-compile-or-link-bug)
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- [Reporting a segfault or other crash bug](#reporting-a-segfault-or-other-crash-bug)
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- [Reporting a context creation bug](#reporting-a-context-creation-bug)
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- [Reporting a monitor or video mode bug](#reporting-a-monitor-or-video-mode-bug)
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- [Reporting an input or event bug](#reporting-an-input-or-event-bug)
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- [Reporting some other library bug](#reporting-some-other-library-bug)
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- [Reporting a documentation bug](#reporting-a-documentation-bug)
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- [Reporting a website bug](#reporting-a-website-bug)
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- [Requesting a feature](#requesting-a-feature)
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- [Contributing a bug fix](#contributing-a-bug-fix)
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- [Contributing a feature](#contributing-a-feature)
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## Reporting a bug
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If GLFW is behaving unexpectedly, make sure you have set an error callback.
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GLFW will often tell you the cause of an issue via this callback.
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If GLFW is behaving unexpectedly at run-time, start by setting an [error
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callback](http://www.glfw.org/docs/latest/intro_guide.html#error_handling).
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GLFW will often tell you the cause of an error via this callback. If it
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doesn't, that might be a separate bug.
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If GLFW is crashing or triggering asserts, make sure that all your object
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handles and other pointers are valid.
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There are issue labels for both platforms and GPU manufacturers, so there is no
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need to mention these in the subject line. If you do, it will be removed when
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the issue is labeled.
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### Reporting a compile or link bug
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__Note:__ GLFW needs many system APIs to do its job, which on some platforms
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means linking to many system libraries. If you are using GLFW as a static
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library, that means your application needs to link to these in addition to GLFW.
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See the [Build guide](http://www.glfw.org/docs/latest/build.html) for more
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information.
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Always include the __operating system name and version__ (i.e. `Windows
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7 64-bit` or `Ubuntu 15.10`) and the __compiler name and version__ (i.e. `Visual
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C++ 2015 Update 2`). If you are using an official release of GLFW,
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include the __GLFW release version__ (i.e. `3.1.2`), otherwise include the
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__GLFW commit ID__ (i.e. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
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Please also include the __complete build log__ from your compiler and linker,
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even if it's long. It can always be shortened later, if necessary.
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#### Quick template
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```
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OS and version:
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Compiler version:
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Release or commit:
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Build log:
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```
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### Reporting a segfault or other crash bug
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Always include the __operating system name and version__ (i.e. `Windows
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7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
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include the __GLFW release version__ (i.e. `3.1.2`), otherwise include the
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__GLFW commit ID__ (i.e. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
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If possible, please also include the __GLFW version string__ (`3.2.0 X11 EGL
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clock_gettime /dev/js XI Xf86vm`), as described
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[here](http://www.glfw.org/docs/latest/intro.html#intro_version_string).
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Please also include any __error messages__ provided to your application via the
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[error
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callback](http://www.glfw.org/docs/latest/intro_guide.html#error_handling) and
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the __full call stack__ of the crash, or if the crash does not occur in debug
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mode, mention that instead.
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### Reporting a compile or link bug
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#### Quick template
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__Note:__ GLFW needs many system APIs to do its job. See the [Building
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applications](http://www.glfw.org/docs/latest/build.html) guide for more
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information.
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In addition to the information above, always include the complete build log from
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your compiler and linker. Issue posts are editable so it can always be
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shortened later.
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```
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OS and version:
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Release or commit:
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Error messages:
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Call stack:
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```
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### Reporting a context creation bug
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@ -38,23 +89,42 @@ __Note:__ Windows ships with graphics drivers that do not support OpenGL. If
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GLFW says that your machine lacks support for OpenGL, it very likely does.
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Install drivers from the computer manufacturer or graphics card manufacturer
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([Nvidia](http://www.geforce.com/drivers),
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[AMD](http://support.amd.com/en-us/download),
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[Intel](https://www-ssl.intel.com/content/www/us/en/support/detect.html)) to
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[AMD](http://support.amd.com/en-us/download),
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[Intel](https://www-ssl.intel.com/content/www/us/en/support/detect.html)) to
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fix this.
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__Note:__ AMD only supports OpenGL ES on Windows via EGL. EGL support is not
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enabled in GLFW by default. You need to [enable EGL when
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compiling](http://www.glfw.org/docs/latest/compile.html) GLFW to use this.
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__Note:__ AMD only supports OpenGL ES on Windows via EGL. See the
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[GLFW\_CONTEXT\_CREATION\_API](http://www.glfw.org/docs/latest/window_guide.html#window_hints_ctx)
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hint for how to select EGL.
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The `glfwinfo` tool is included in the GLFW source tree as `tests/glfwinfo.c`
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and is built along with the library. It lets you request any kind of context
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and framebuffer format supported by the GLFW API without having to recompile.
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If context creation fails in your application, please verify that it also fails
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with this tool before reporting it as a bug.
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Please verify that context creation also fails with the `glfwinfo` tool before
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reporting it as a bug. This tool is included in the GLFW source tree as
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`tests/glfwinfo.c` and is built along with the library. It has switches for all
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GLFW context and framebuffer hints. Run `glfwinfo -h` for a complete list.
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In addition to the information above (OS and GLFW version), always include the
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__GPU model and driver version__ (i.e. `GeForce GTX660 with 352.79`) when
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reporting this kind of bug.
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Always include the __operating system name and version__ (i.e. `Windows
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7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
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include the __GLFW release version__ (i.e. `3.1.2`), otherwise include the
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__GLFW commit ID__ (i.e. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
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Please also include the __GLFW version string__ (`3.2.0 X11 EGL clock_gettime
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/dev/js XI Xf86vm`), as described
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[here](http://www.glfw.org/docs/latest/intro.html#intro_version_string), the
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__GPU model and driver version__ (i.e. `GeForce GTX660 with 352.79`), and the
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__output of `glfwinfo`__ (with switches matching any hints you set in your
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code) when reporting this kind of bug. If this tool doesn't run on the machine,
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mention that instead.
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#### Quick template
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```
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OS and version:
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GPU and driver:
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Release or commit:
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Version string:
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`glfwinfo` output:
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```
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### Reporting a monitor or video mode bug
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@ -63,23 +133,40 @@ __Note:__ On headless systems on some platforms, no monitors are reported. This
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causes glfwGetPrimaryMonitor to return `NULL`, which not all applications are
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prepared for.
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__Note:__ Some third-party tools report more video modes than those approved of
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by the OS. For safety and compatbility, GLFW only reports video modes the OS
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__Note:__ Some third-party tools report more video modes than are approved of
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by the OS. For safety and compatibility, GLFW only reports video modes the OS
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wants programs to use. This is not a bug.
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The `monitors` tool is included in the GLFW source tree as `tests/monitors.c`
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and is built along with the library. lists all information about connected
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monitors made available by GLFW.
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and is built along with the library. It lists all information GLFW provides
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about monitors it detects.
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In addition to the information above (OS and GLFW version), please also include
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the output of the `monitors` tool when reporting this kind of bug. If it
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doesn't work at all, please mention this.
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Always include the __operating system name and version__ (i.e. `Windows
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7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
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include the __GLFW release version__ (i.e. `3.1.2`), otherwise include the
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__GLFW commit ID__ (i.e. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
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Please also include any __error messages__ provided to your application via the
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[error
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callback](http://www.glfw.org/docs/latest/intro_guide.html#error_handling) and
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the __output of `monitors`__ when reporting this kind of bug. If this tool
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doesn't run on the machine, mention this instead.
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### Reporting a window event bug
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#### Quick template
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__Note:__ While GLFW tries to provide the exact same behavior between platforms,
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the exact ordering of related window events will sometimes differ.
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```
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OS and version:
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Release or commit:
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Error messages:
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`monitors` output:
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```
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### Reporting an input or event bug
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__Note:__ While GLFW tries to provide the same behavior across platforms, the
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exact ordering of related window events will sometimes differ.
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The `events` tool is included in the GLFW source tree as `tests/events.c` and is
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built along with the library. It prints all information provided to every
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@ -87,20 +174,109 @@ callback supported by GLFW as events occur. Each event is listed with the time
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and a unique number to make discussions about event logs easier. The tool has
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command-line options for creating multiple windows and full screen windows.
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Always include the __operating system name and version__ (i.e. `Windows
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7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
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include the __GLFW release version__ (i.e. `3.1.2`), otherwise include the
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__GLFW commit ID__ (i.e. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
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Please also include any __error messages__ provided to your application via the
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[error
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callback](http://www.glfw.org/docs/latest/intro_guide.html#error_handling) and
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if relevant, the __output of `events`__ when reporting this kind of bug. If
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this tool doesn't run on the machine, mention this instead.
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#### Quick template
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```
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OS and version:
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Release or commit:
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Error messages:
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`events` output:
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```
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### Reporting some other library bug
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Always include the __operating system name and version__ (i.e. `Windows
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7 64-bit` or `Ubuntu 15.10`). If you are using an official release of GLFW,
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include the __GLFW release version__ (i.e. `3.1.2`), otherwise include the
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__GLFW commit ID__ (i.e. `3795d78b14ef06008889cc422a1fb8d642597751`) from Git.
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Please also include any __error messages__ provided to your application via the
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[error
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callback](http://www.glfw.org/docs/latest/intro_guide.html#error_handling), if
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relevant.
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#### Quick template
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```
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OS and version:
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Release or commit:
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Error messages:
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```
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### Reporting a documentation bug
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If you found the error in the generated documentation then it's fine to just
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link to that webpage. You don't need to figure out which documentation source
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file the text comes from.
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If you found a bug in the documentation, including this file, then it's fine to
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just link to that web page or mention that source file. You don't need to match
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the source to the output or vice versa.
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### Reporting a website bug
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If the bug is in the documentation (anything under `/docs/`) then please see the
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section above. Bugs in the rest of the site are reported to to the [website
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source repository](https://github.com/glfw/website/issues).
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## Requesting a feature
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Please explain why you need the feature and how you intend to use it. If you
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have a specific API design in mind, please add that as well. If you have or are
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planning to write code for the feature, see the section below.
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## Contributing a bug fix
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There should be text here, but there isn't.
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Adding a complete bug fix involves:
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- Change log entry in `README.md`
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- Credits entries in `README.md` for all authors of the fix
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## Contributing a feature
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This is not (yet) the text you are looking for.
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__Note:__ You _must_ mention if you have taken any code from outside sources,
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even if the licenses seem compatible.
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Adding a complete feature involves:
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- Change log entry in `README.md`
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- News entry in `docs/news.dox`
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- Guide documentation in `docs/window.dox`, `docs/input.dox`,
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`docs/monitor.dox`, `docs/context.dox` or `docs/vulkan.dox`
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- Reference documentation in `include/GLFW/glfw3.h`
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- Credits entries in `README.md` for all authors of the feature
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If it requires platform-specific code, add at minimum stubs for the new platform
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function to all supported platforms.
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If it's a new callback, add support for it to `tests/event.c`.
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If it's a new monitor property, add support for it to `tests/monitor.c`.
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If it's a new OpenGL, OpenGL ES or Vulkan option or extension, add support for
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it to `tests/glfwinfo.c` and describe its use in `docs/compat.dox`.
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If it requires calling non-default DLLs on Windows, load these at runtime in
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`src/win32_init.c`.
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Please keep in mind that any part of the public API that has been included in
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a release cannot be changed until the next _major_ version. Features can be
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added and existing parts can sometimes be overloaded (in the general sense of
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doing more things, not in the C++ sense), but code written to the API of one
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minor release should both compile and run on subsequent minor releases.
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