1WAFFLE_DISPLAY(3)                Waffle Manual               WAFFLE_DISPLAY(3)
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NAME

6       waffle_display, waffle_display_connect, waffle_display_disconnect,
7       waffle_display_supports_context_api, waffle_display_get_native - class
8       waffle_display
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SYNOPSIS

11       #include <waffle.h>
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13       struct waffle_display;
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16       struct waffle_display* waffle_display_connect(const char* name);
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18       bool waffle_display_disconnect(struct waffle_display *self);
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20       bool waffle_display_supports_context_api(struct waffle_display *self,
21                                                int32_t context_api);
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23       union waffle_native_display*
24                                                              waffle_display_get_native(struct waffle_display *self);
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DESCRIPTION

27       struct waffle_display
28           An opaque type.
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30       waffle_display_connect()
31           Connect to a display. The interpretation of name differs according
32           to the platform given to waffle_init(3).
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34           On Android, CGL and WGL name is ignored.
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36           On the X11 platforms, GLX and X11/EGL, the function connects to the
37           X11 display with the given name. If name is null, then it uses the
38           value of the environment variable DISPLAY.
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40           On Wayland, the function connects to the Wayland display with the
41           given name. If name is null, then it uses the value of the
42           environment variable WAYLAND_DISPLAY.
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44           On GBM, the function opens the device at the filepath name. If name
45           is NULL, then the function uses the value of environment variable
46           WAFFLE_GBM_DEVICE. If name is null and WAFFLE_GBM_DEVICE is unset,
47           then the function iterates using udev through the set of card
48           devices in the drm subsystem, which are usually located in
49           /dev/dri, and attempts to open each in turn with open(O_RDWR |
50           O_CLOEXEC) until successful.
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52       waffle_display_disconnect()
53           Disconnect from the waffle_display and release it's memory. All
54           pointers to waffle objects that were created with the display
55           become invalid.
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57       waffle_display_supports_context_api()
58           Check if the display is capable of creating a waffle_context(3)
59           with the given context_api. See waffle_config(3) for choices of
60           context_api and expectations for each platform.
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62       waffle_display_get_native()
63           Get the display's underlying native objects. Use free(3) to
64           deallocate the returned pointer. See waffle_native(3) for the
65           definition of union waffle_native_display.
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RETURN VALUE

68       Functions whose return type is bool return true on success and false on
69       failure. Functions whose return type is a pointer return NULL on
70       failure. Use waffle_error_get_info(3) to get information about any
71       errors.
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ERRORS

74       See waffle_error(3) for the complete list of waffle's error codes.
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76       No errors are specific to any of the waffle_display functions.
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ISSUES

79       Please report bugs or and feature requests to
80       https://github.com/waffle-gl/waffle/issues.
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SEE ALSO

83       waffle(7)
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AUTHOR

86       Chad Versace <chad.versace@linux.intel.com>
87           Maintainer
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90       Copyright © 2013 Intel
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92       This manual page is licensed under the Creative Commons
93       Attribution-ShareAlike 3.0 United States License (CC BY-SA 3.0). To
94       view a copy of this license, visit
95       http://creativecommons.org.license/by-sa/3.0/us.
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100waffle                            02/03/2019                 WAFFLE_DISPLAY(3)
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