2016-02-17 22:03:12 +01:00
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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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## 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 crashing or triggering asserts, make sure that all your object
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handles and other pointers are valid.
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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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### Reporting a compile or link bug
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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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### Reporting a context creation bug
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__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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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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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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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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### Reporting a monitor or video mode bug
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__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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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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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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### Reporting a window event bug
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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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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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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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### 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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## Contributing a bug fix
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There should be text here, but there isn't.
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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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