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Explore the complex world of embedded Linux graphics in this 40-minute conference talk that breaks down the journey from memory to photons on your screen. Learn about the fundamental components of the Linux graphics stack and understand how various elements like DRM, GPU, MIPI, Khronos, OpenGL ES, Vulkan, KMS, Weston, HDMI, framebuffer, and Mesa3D work together in a layered architecture. Discover the speaker's hands-on experience getting the first pixel to appear on an LVDS screen, including recent work on Allwinner A133 display engine support and ongoing efforts to integrate Imagination Technologies' GPU GE8300 into the upstream kernel. Gain insights into the Linux kernel's DRM structure, identify which components are essential for building your display pipeline, and master debugging techniques for troubleshooting when pixels don't appear as expected. This beginner-friendly presentation demystifies the intricate relationship between kernel and userspace components that make modern Linux graphics possible, whether for moving pictures or interactive games.
