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Summary

 
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Description
English: en:Wayland (display server protocol)
① The en:evdev module of the en:Linux kernel gets an event and sends it to the en:Wayland compositor. This is similar to the X case, which is great, since we get to reuse all the input drivers already in the kernel.
② The Wayland compositor looks through its scenegraph to determine which window should receive the event. The scenegraph corresponds to what's on screen and the Wayland compositor understands the transformations that it may have applied to the elements in the scenegraph. Thus, the Wayland compositor can pick the right window and transform the screen coordinates to window local coordinates, by applying the inverse transformations. The types of transformation that can be applied to a window is only restricted to what the compositor can do, as long as it can compute the inverse transformation for the input events.
③ As in the X case, when the client receives the event, it updates the UI in response. But in the Wayland case, the rendering happens in the client, and the client just sends a request to the compositor to indicate the region that was updated.
④ The en:Wayland compositor collects damage requests from its clients and then re-composites the screen. The compositor can then directly issue an en:ioctl to schedule a pageflip with KMS
Date
Source Own work
 
This vector image includes elements that have been taken or adapted from this file:
 Tux-shaded.svg.
 
This vector image includes elements that have been taken or adapted from this file:
 Wayland Logo.svg.
Author ScotXW, based on work by en:Kristian Høgsberg published at en:freedesktop.org: http://wayland.freedesktop.org/
Other versions See also

Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Shmuel Csaba Otto Traian
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GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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inception

20 August 2013

File history

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Date/TimeThumbnailDimensionsUserComment
current11:38, 27 February 2014Thumbnail for version as of 11:38, 27 February 2014720 × 900 (70 KB)ScotXWadded libinput reworked the colors, The Wayland protocol and files implementing it are now in the same color as the Wayland logo
19:48, 30 October 2013Thumbnail for version as of 19:48, 30 October 2013720 × 900 (66 KB)ScotXWsmaller, removed reference to the Linux kernel because Wayland is not specific to it
09:32, 24 September 2013Thumbnail for version as of 09:32, 24 September 2013720 × 900 (492 KB)ScotXWcorrected the numbers, and added an arrow from the Compositor to Mesa
15:41, 3 September 2013Thumbnail for version as of 15:41, 3 September 2013720 × 900 (490 KB)ScotXWWayland display server protocol

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