libsdl-org/SDL
Dec 2025 – Apr 2026
2 Months active
Languages Used
CJavaScript
Technical Skills
C programmingEmscriptenWebAssemblyJavaScript programminggame developmentweb development
Christian Semmler
PROFILE
Christian Semmler
Christian Semmler focused on improving the stability and reliability of web-based SDL builds in the libsdl-org/SDL repository, addressing critical crash scenarios in Emscripten and WebAssembly environments. He resolved a crash in the icon rendering workflow by ensuring PNG data was safely copied from a SharedArrayBuffer to a local Uint8Array before Blob creation, isolating the fix to icon data handling without altering public APIs. Additionally, he enhanced gamepad input stability by migrating navigator.getGamepads access to the main thread and adding null checks for device disconnects. His work demonstrated depth in C programming, Emscripten, and JavaScript integration.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
3Total
Bugs
2
Commits
3
Features
0
Lines of code
104
Activity Months2
Your Network
139 peopleWork History
April 2026
2 Commits
Apr 1, 2026April 2026 monthly summary for libsdl-org/SDL: Focused on stabilizing web-based gamepad input in the Emscripten build. Implemented two targeted fixes to address worker-thread access to the Gamepad API, and added defensive guards for disconnect scenarios. These changes reduce runtime crashes and improve reliability for web deployments.
2 Commits
Apr 1, 2026April 2026 monthly summary for libsdl-org/SDL: Focused on stabilizing web-based gamepad input in the Emscripten build. Implemented two targeted fixes to address worker-thread access to the Gamepad API, and added defensive guards for disconnect scenarios. These changes reduce runtime crashes and improve reliability for web deployments.
April 2026
December 2025
1 Commits
Dec 1, 2025December 2025: Focused on stability and reliability for WebAssembly builds, specifically the Emscripten pthreads path used by SDL icon rendering. Implemented a robust fix to prevent crashes when setting window icons by copying PNG data from a SharedArrayBuffer to a local Uint8Array before Blob creation, addressing a crash in the icon rendering flow. The change is isolated to icon data handling and did not alter public APIs, improving end-user reliability across Emscripten/Web builds.
December 2025
1 Commits
Dec 1, 2025December 2025: Focused on stability and reliability for WebAssembly builds, specifically the Emscripten pthreads path used by SDL icon rendering. Implemented a robust fix to prevent crashes when setting window icons by copying PNG data from a SharedArrayBuffer to a local Uint8Array before Blob creation, addressing a crash in the icon rendering flow. The change is isolated to icon data handling and did not alter public APIs, improving end-user reliability across Emscripten/Web builds.
Activity
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Quality Metrics
Correctness100.0%
Maintainability86.6%
Architecture93.4%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
CJavaScript
Technical Skills
C programmingEmscriptenJavaScript programmingWebAssemblygame developmentweb development
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