A detailed technical walkthrough of profiling and optimizing a headless Unity simulation from 21 to 25 FPS — covering NVENC GPU encoding, batch camera rendering, GPU instancing, static batching, and the failed URP migration. Every measurement, every dead end, every lesson.
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.
DDS content filter parameter substitution (%0, %1) silently fails for string fields in ROS 2 with Fast DDS. The root cause is three layers deep — the DDS SQL grammar requires quoted string literals, but no ROS 2 layer adds the quotes. Here’s how I traced it and where to fix it.
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.
A one-word review comment on my Eigen MR revealed that hand-rolling normalization with .norm() silently breaks on extreme inputs. Eigen already had the fix — I just wasn’t using it.
Four bugs in GStreamer’s shmsink/shmsrc elements — a race condition, a use-after-free, a wrong-pointer dereference, and a page alignment mismatch. What they have in common, how to find them, and what they teach about writing correct GStreamer elements.
A 2-line fix for a race condition in GStreamer’s shmsink that causes every pipeline using shared memory to exit with an error. How I found it, proved it, and verified the fix with sanitizers.
A step-by-step guide to mounting SMB/CIFS network shares on Linux — from one-off access in a file manager to persistent fstab entries with systemd automount that connect only when needed and gracefully handle VPN disconnects.
How a simple erase-remove in every add_timer() call turned entity registration into a quadratic bottleneck — and the 71x speedup from moving cleanup to the right place.
A hands-on walkthrough of configuring multiple monitors on Linux — from identifying displays with xrandr, turning off the laptop screen, ignoring lid close, to making it all survive a reboot. Every command explained.