The following projects provide a hands-on path through the , Kernel Mode Setting (KMS) , and User-space libraries that power modern Linux desktops. 1. Direct Framebuffer Manipulation (The "Hello World")
Before diving into complex DRM drivers, you can interact directly with the video memory to understand how pixels are mapped in memory.
Use Wireshark to analyze how graphics requests are dispatched from an application to the X Server or Wayland compositor. Hands On Projects For The Linux Graphics Subsystem
Follow tutorials like those found in the Hands-on Projects for the Linux Graphics Subsystem book, which details repainting screen pixels manually. 2. Basic DRM/KMS "Modetest" Application
The hardware units that scan out the pixel data to the display. The following projects provide a hands-on path through
Create a simple user-space application that uses the libdrm library to find an active display connector, allocate a buffer, and display a solid color. Key Concepts:
Identifying where the monitor is plugged in. Use Wireshark to analyze how graphics requests are
Many developers are surprised to learn that graphics commands can be "sniffed" just like network packets.
Write a C program to draw basic shapes (rectangles, lines) by writing directly to /dev/fb0 .