Product engineering · FocalDesk
Personalization without losing consistency
How semantic theme documents let FocalDesk change color, wallpaper, and shell material while familiar navigation stays intact.
Writing and technical notes
Engineering
Architecture, project deep dives, benchmarks, and practical software and systems engineering notes.
DMA-BUFAsh / VulkanRGBA16FBT.2020 / PQ10-bit KMS
HDR30-bit output
Graphics · FocalDesk
From incorrect color to 10-bit HDR
Building the complete Ash → GBM → atomic KMS pipeline to make DMA-BUF import, FP16 composition, PQ encoding, synchronization, and display metadata explicit.
Read the rendering deep diveFrom the archive
More engineering notes
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Performance · FocalVector
Fast by layers
Quantization, SIMD, deterministic parallel construction, zero-copy persistence, and optional CUDA search without redefining the correct answer.
Architecture · FocalDesk
The frame loop is a boundary
Keeping a Wayland compositor responsive by moving variable-latency work behind explicit, recoverable service boundaries.