Embedded, Mobile and Automotive

Back to DirectFB!

The revival of DirectFB with DirectFB2
D.embedded
Nicolas Caramelli
<p>DirectFB2 is a fork of DirectFB, a graphics library designed with embedded systems in mind that was widely used in the GNU/Linux embedded world. DirectFB2 comes with changes such as a Meson build system, a pure C implementation and a modularization of the source code.</p> <p>Access to the low-level display is based on a DRM/KMS system module (or possibly on a legacy Framebuffer system module), and depending on the platform, hardware-accelerated graphics rendering can be achieved using the architecture of the GFX driver modules.</p> <p>The core library is very light (no external dependencies) and provides basic font/image/video rendering support which can be demonstrated with the DirectFB-examples.</p> <p>The use of additional DirectFB providers based on external libraries is also possible thanks to the DirectFB-media package, such as rendering fonts with the FreeType library, rendering images with libpng or jpeg libraries, rendering videos with FFmpeg or GStreamer libraries.</p> <p>For 3D graphics, OpenGL or Vulkan rendering can be done with the DirectFB graphics backend. As an example, the Mesa 3D implementation makes OpenGL rendering possible with a DirectFBGL module or with EGL for the DirectFB platform, and the SwiftShader implementation makes Vulkan rendering possible with the DirectFB WSI.</p> <p>This talk aims at getting started with DirectFB2 which may be worth considering on some devices.</p>

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