How I replaced flat brown terrain and solid-color sky in a headless Unity 6 Docker simulation with real satellite imagery, SRTM topography, and a custom panoramic skybox — all fully air-gapped, no runtime network dependency. Includes NVENC GPU encoding, custom shaders, and every dead end along the way.
A detailed account of fixing terrain rendering in a headless Unity 6 Docker simulation — from magenta buildings and gray streaming cameras to textured villages with working RTSP feeds. Covers cross-platform asset bundle shader mismatches, runtime material conversion, texture recovery from broken materials, and every dead end along the way.
Everything I learned submitting four pull requests to ROS 2 core repositories — from finding issues and building in Docker to passing DCO checks, handling OSRF’s AI disclosure policy, rebasing across distro branches, and running the full test suites. A warts-and-all field guide.
Everything I learned contributing 6 PRs to PX4-Autopilot in a single session — from Docker-based builds and sanitizer workflows, through uXRCE-DDS session debugging and MAVLink signing analysis, to SITL integration testing. Real bugs, real fixes, real build output.
A three-day odyssey connecting PX4 flight controller to a GPU-rendered Unity drone simulation running headless inside Docker — through licensing labyrinths, shader abysses, coordinate system riddles, native library dragons, and a TCP protocol twist ending nobody expected.
Eigen’s .inc plugin headers were read by Doxygen but never preprocessed as C++ — meaning macros like EIGEN_PARSED_BY_DOXYGEN were silently ignored. Here’s how I verified it in Docker and what the one-line fix looks like.
A day-long battle fixing a CI pipeline that builds Docker images on a self-hosted Jetson Xavier runner. From stale git submodules to GCC-15 assembler errors, expired tokens, DNS failures inside Docker, and deleted upstream branches — every layer of the stack had something broken.
PX4’s MAVSDK tests were migrated to SIH but the ROS integration tests were left behind on Gazebo Classic. This post documents the complete migration — the config changes, the CI pipeline surgery, the parameter name pitfall that silently broke GlobalPositionInterfaceTest, and how to reproduce the full 14-test suite locally in Docker.
A detailed technical account of running px4-ros2-interface-lib integration tests against PX4 SITL — from discovering that the project’s CI never runs them, through three different simulator backends, five distinct failure modes, and the surprising DDS payload mismatch that blocked everything. Every dead end documented.
A detailed technical account of containerizing a Unity 2019.4 drone simulation with GPU-accelerated rendering, dual RTSP camera streaming via FFmpeg/mediamtx, and MAVLink drone control — including every obstacle encountered and how it was solved.