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Knoppix booting on the framebuffer. The Linux framebuffer (fbdev) is a linux subsystem used to show graphics on a computer monitor, typically on the system console. [1]It was designed as a hardware-independent API to give user space software access to the framebuffer (the part of a computer's video memory containing a current video frame) using only the Linux kernel's own basic facilities and ...
DirectFB (Direct Frame Buffer), now continued as DirectFB2, is a software library with a small memory footprint that provides graphics acceleration, input device handling and abstraction layer, and integrated windowing system with support for translucent windows and multiple display layers on top of the Linux framebuffer without requiring any kernel modifications.
The GGI framework is implemented by a set of portable user-space libraries, with an array of different backends or targets (e.g. Linux framebuffer, X11, Quartz, DirectX), of which the two most fundamental are LibGII (for input-handling) and LibGGI (for graphical output). All other packages add features to these core libraries, and so depend on ...
DRI has also been adapted to provide OpenGL acceleration on a framebuffer console without a display server running. [7] DRI implementation is scattered through the X Server and its associated client libraries, Mesa 3D and the Direct Rendering Manager kernel subsystem. [6] All of its source code is open-source software.
Note that the X Window System was originally primarily for Unix-like operating systems, but it now runs on Microsoft Windows as well using, for example, Cygwin, so some or all of these toolkits can also be used under Windows. Motif used in the Common Desktop Environment. LessTif, an open source implementation of Motif.
As an example, the following sequence of commands runs a virtual framebuffer X server as display :1, runs a program (xclock) on it, and captures the virtual screen in the file image.xwd using the xwd command:
Running hwinfo --framebuffer reports graphics information, including VESA modes on a "Mode" line. mdt is a Linux or DOS tool that uses VESA BIOS functions to read monitor data. [11] The Linux Real Mode Interface (LRMI) has a vbetest program that prints out VESA info. SciTech Software had a unrelated vbetest for DOS that dates back to 1994.
Whether software programmed for Linux can run on Android, depends entirely on the extent to which libbionic matches the API of the glibc. 2 libinput [15] provides device detection via udev, device handling, input device event processing and abstraction. [16] libinput also provides a generic X.Org input driver.