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Xavier Bourry

PROFILE

Xavier Bourry

Xavier Bourry contributed to maplibre-gl-js by developing GPU-driven optimizations for symbol rendering, focusing on both performance and mathematical correctness. He implemented early culling of transparent symbols within vertex shaders, enabling single-pass rendering for halos and glyphs, which reduced GPU workload and improved frame rates. Using GLSL and TypeScript, Xavier also addressed a skew inversion matrix bug, ensuring accurate rendering calculations. His work included expanding unit tests and updating documentation to support ongoing stability and developer efficiency. The depth of his contributions is reflected in the careful integration of benchmarking, shader programming, and matrix computation to enhance rendering reliability and speed.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

3Total
Bugs
1
Commits
3
Features
1
Lines of code
684
Activity Months1

Work History

April 2026

3 Commits • 1 Features

Apr 1, 2026

April 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.

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

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

maplibre/maplibre-gl-js

Apr 2026 Apr 2026
1 Month active

Languages Used

GLSLTypeScript

Technical Skills

BenchmarkingGPU programmingMatrix ComputationPerformance OptimizationPerformance optimizationShader Programming