maplibre/maplibre-gl-js
Apr 2026 – Apr 2026
1 Month active
Languages Used
GLSLTypeScript
Technical Skills
BenchmarkingGPU programmingMatrix ComputationPerformance OptimizationPerformance optimizationShader Programming
Xavier Bourry
PROFILE
Xavier Bourry
Worked on maplibre-gl-js to enhance GPU-driven symbol rendering, focusing on both performance and mathematical correctness. Leveraged GLSL and TypeScript to optimize vertex shaders, introducing early culling of transparent symbols and enabling single-pass rendering for halos and glyphs, which reduced GPU workload and improved frame rates. Addressed a critical skew inversion matrix bug, ensuring accurate rendering calculations and expanding unit tests to cover math and rendering paths. Updated documentation and changelogs to reflect these changes, supporting better developer velocity. The work demonstrated depth in benchmarking, matrix computation, and shader programming, resulting in improved reliability and maintainability of the rendering pipeline.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
1
Lines of code
684
Activity Months1
Your Network
95 peopleSame Organization
@polytechnique.org6
Work History
April 2026
3 Commits • 1 Features
Apr 1, 2026April 2026 (2026-04) focused on performance hardening and math correctness in maplibre-gl-js. Delivered GPU-focused symbol rendering improvements and fixed a critical matrix inversion bug, complemented by enhanced tests and documentation updates to improve stability and developer velocity.
3 Commits • 1 Features
Apr 1, 2026April 2026 (2026-04) focused on performance hardening and math correctness in maplibre-gl-js. Delivered GPU-focused symbol rendering improvements and fixed a critical matrix inversion bug, complemented by enhanced tests and documentation updates to improve stability and developer velocity.
April 2026
Activity
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Quality Metrics
Correctness93.4%
Maintainability80.0%
Architecture80.0%
Performance100.0%
AI Usage40.0%
Skills & Technologies
Programming Languages
GLSLTypeScript
Technical Skills
BenchmarkingGPU programmingMatrix ComputationPerformance OptimizationPerformance optimizationShader ProgrammingShader developmentWebGL
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