libkms++ is a C++11 library for kernel mode setting.
Also included are some simple utilities for KMS and python bindings for libkms++.
- testpat - set modes and planes and show test pattern on crtcs/planes
- kmsprint - print information about DRM objects
- kmsview - view raw images
- db - simple double-buffering test
- kmscube - rotating 3D cube on crtcs/planes
- kmscapture - show captured frames from a camera on screen
- libdrm
- Python 3.x (for python bindings)
To build the Python bindings you need to set up the git-submodule for pybind11:
git submodule update --init
And to compile:
$ mkdir build
$ cd build
$ cmake ..
$ make -j4
Directions for cross compiling depend on your environment.
These are for mine with buildroot:
$ mkdir build
$ cd build
$ cmake -DCMAKE_TOOLCHAIN_FILE=<buildrootpath>/output/host/usr/share/buildroot/toolchainfile.cmake ..
$ make -j4
You can use the following cmake flags to control the build. Use -DFLAG=VALUE to set them.
| Option name | Values | Default | Notes |
|---|---|---|---|
| CMAKE_BUILD_TYPE | Release/Debug | Release | |
| LIBKMS_ENABLE_PYTHON | ON/OFF | ON | |
| LIBKMS_ENABLE_KMSCUBE | ON/OFF | OFF |
You can use the following runtime environmental variables to control the behavior of libkms.
| Variable | Description |
|---|---|
| LIBKMSXX_DISABLE_UNIVERSAL_PLANES | Set to disable the use of universal planes |
| LIBKMSXX_DISABLE_ATOMIC | Set to disable the use of atomic modesetting |