May 2026 monthly summary for facebook/igl focusing on GPU tier classification improvements and robustness of GPU detection. Delivered targeted classification refinements to improve feature gating and performance tuning across devices; backported defensive vendor string matching to broaden coverage and reduce misclassification.

April 2026—Facebook/igl: Delivered cross-vendor GPU timing safety enhancements. Implemented Mali-T and PowerVR tier checks to properly handle broken timer query implementations and vendor variations, reducing timing inaccuracies and instability. Strengthened timing safety with null-checks, atomic detach, and slot validation across critical paths. Commit 2170c9d1696f6ee83a249df61ffb9eba336c0fa2; Differential Revision D100798675; reviewed by codyly. Impact: more reliable GPU timing across Mali-T and PowerVR GPUs, reducing user-facing glitches and improving rendering stability. Skills: C++, GPU timing safety, cross-vendor validation, code review, and collaboration in a modern fbshipit workflow.