2ee9ef098b
Pointer arithmetic beyond PTRDIFF_MAX is broken, so buffer sizes exceeding PTRDIFF_MAX (which is half of the address space!) are a bad idea. Furthermore, the code uses int for sizes in various places, so buffer sizes exceeding INT_MAX are also a bad idea. Therefore, limit buffer sizes to (PTRDIFF_MAX / 2) + 1 or (INT_MAX / 2) + 1, whichever is smaller. Tests would require 2GiB of RAM and so have been omitted. The test would check for wl_connection_flush() flushing more than INT_MAX bytes in one call, causing it to return a negative number and causing its caller to wrongly believe an error occurred. Signed-off-by: Demi Marie Obenour <demi@invisiblethingslab.com> |
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| CONTRIBUTING.md | ||
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| meson.build | ||
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| README.md | ||
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| wayland-scanner.m4 | ||
| wayland-scanner.mk | ||
Wayland
Wayland is a project to define a protocol for a compositor to talk to its clients as well as a library implementation of the protocol. The compositor can be a standalone display server running on Linux kernel modesetting and evdev input devices, an X application, or a wayland client itself. The clients can be traditional applications, X servers (rootless or fullscreen) or other display servers.
The wayland protocol is essentially only about input handling and buffer management. The compositor receives input events and forwards them to the relevant client. The clients creates buffers and renders into them and notifies the compositor when it needs to redraw. The protocol also handles drag and drop, selections, window management and other interactions that must go through the compositor. However, the protocol does not handle rendering, which is one of the features that makes wayland so simple. All clients are expected to handle rendering themselves, typically through cairo or OpenGL.
Building the wayland libraries is fairly simple, aside from libffi, they don't have many dependencies:
$ git clone https://gitlab.freedesktop.org/wayland/wayland
$ cd wayland
$ meson build/ --prefix=PREFIX
$ ninja -C build/ install
where PREFIX is where you want to install the libraries.
See https://wayland.freedesktop.org for documentation.