drmlist

drmlist is a simple program designed to interface directly with Linux's DRM (Direct Rendering Manager) devices through system calls, bypassing the use of libdrm.

What does it do?

• Listing Connectors and Modes: drmlist allows you to retrieve a comprehensive list of connectors and available modes on the DRM device.
• Direct Graphics Rendering: Choose your desired mode and render graphics directly onto the screen without relying on X11 or Wayland, utilizing the DRM device.

What I've learned:

drmlist has been an educational journey for me, providing insights into:

• User-Space Interaction with GPU Drivers: Understanding how user-space interacts with GPU drivers on Linux.
• Significance of Graphics Libraries: Exploring the purpose behind the existence of graphics libraries like OpenGL and Vulkan.
• Underlying Operations of OpenGL, Vulkan, etc.: Gaining a deeper understanding of what OpenGL, Vulkan, and similar technologies actually accomplish under the hood.

Resources:

Where I learned and extended from:

• OS development using the Linux kernel - DRM/KMS Video Modes (Part 9)
• OS development using the Linux kernel - DRM/KMS Drawing (Part 10)