libretro/RetroArch
Apr 2026 – Apr 2026
1 Month active
Languages Used
CGradleJava
Technical Skills
Android DevelopmentAndroid developmentC programmingGame Controller IntegrationGame DevelopmentJNI
TideGear
PROFILE
Tidegear
Worked on the libretro/RetroArch project to enhance controller input fidelity and user interface reliability, focusing on Android and USB-connected devices. Developed independent dual-motor rumble support for Android 12+ using Java and JNI with VibratorManager, and implemented a direct USB HID output path in C to enable distinct strong and weak rumble for controllers like DualShock 4 and DualSense. Addressed UI reliability by correcting device dropdown logic, ensuring accurate device status display. These improvements broadened controller compatibility, reduced latency, and improved user experience. Demonstrated skills in Android development, USB communication, and cross-platform integration through targeted feature delivery and bug resolution.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
1
Lines of code
576
Activity Months1
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Work History
April 2026
3 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for libretro/RetroArch focusing on controller input fidelity and UI reliability. Delivered cross-platform rumble enhancements for Android and USB-connected controllers, plus a UI reliability fix for device dropdowns. These changes improve platform parity, reduce user friction, and extend support to a broader set of controllers with lower latency rumble and clearer device status. Key features delivered: - Independent dual-motor rumble control on Android 12+ using VibratorManager and a direct USB HID output path to support distinct strong/weak rumble for USB-connected controllers (e.g., DS4, DualSense). CompileSdkVersion bumped to 31 to enable new APIs and ensure future compatibility. Tests covered multiple devices including Sony DS4 (Bluetooth and USB), DualSense, and 8BitDo Pro 2. - Comprehensive USB HID raw-output rumble path with USB reports when available, preserving existing behavior as a fallback. This ensures correct strong/weak vibrato behavior on USB-connected devices even when the HID stack would otherwise collapse the motors. - UI reliability improvement: Fixed inverted conditions in the device and mouse index dropdowns so that "Disabled" now only appears when no device name is available, restoring accurate device display. Major bugs fixed: - USB-connected DualShock 4 and DualSense rumble now respects separate strong/weak motors via USB HID raw output, correcting the previous identical-amplitude issue. - Inverted display logic in device-related UI dropdowns corrected to show actual connected devices, eliminating erroneous "Disabled" states. Overall impact and accomplishments: - Broadened controller support with more accurate rumble fidelity and lower latency paths for USB devices, improving user experience for a large subset of players. - Strengthened UI reliability, reducing user confusion and support overhead related to device selection. - Demonstrated cross-platform skill with JNI, Android VibratorManager, CombinedVibration usage, USB HID integration, and careful UI/state handling. Technologies/skills demonstrated: - Android native integration (JNI, VibratorManager, CombinedVibration) - USB HID path handling (controlTransfer, SET_REPORT, HID reports) - Cross-platform C/C++ and platform-specific code paths - Robust device enumeration, permissions handling, and lifecycle-aware UI updates Commit highlights and traceability: - Enhanced controller rumble support across Android and USB-connected devices (commit 9cee488493f7f24e6cb8a35bb3a46da240cfdb10) - Android USB/rumble fix for DS4/DualSense (commit fafb13f01ffac264d8e451fb996bd74934d39efb) - UI dropdowns reliability fix (commit 8730cdbdcddf4f67f081c74681ec11f33ccdf6f3)
3 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for libretro/RetroArch focusing on controller input fidelity and UI reliability. Delivered cross-platform rumble enhancements for Android and USB-connected controllers, plus a UI reliability fix for device dropdowns. These changes improve platform parity, reduce user friction, and extend support to a broader set of controllers with lower latency rumble and clearer device status. Key features delivered: - Independent dual-motor rumble control on Android 12+ using VibratorManager and a direct USB HID output path to support distinct strong/weak rumble for USB-connected controllers (e.g., DS4, DualSense). CompileSdkVersion bumped to 31 to enable new APIs and ensure future compatibility. Tests covered multiple devices including Sony DS4 (Bluetooth and USB), DualSense, and 8BitDo Pro 2. - Comprehensive USB HID raw-output rumble path with USB reports when available, preserving existing behavior as a fallback. This ensures correct strong/weak vibrato behavior on USB-connected devices even when the HID stack would otherwise collapse the motors. - UI reliability improvement: Fixed inverted conditions in the device and mouse index dropdowns so that "Disabled" now only appears when no device name is available, restoring accurate device display. Major bugs fixed: - USB-connected DualShock 4 and DualSense rumble now respects separate strong/weak motors via USB HID raw output, correcting the previous identical-amplitude issue. - Inverted display logic in device-related UI dropdowns corrected to show actual connected devices, eliminating erroneous "Disabled" states. Overall impact and accomplishments: - Broadened controller support with more accurate rumble fidelity and lower latency paths for USB devices, improving user experience for a large subset of players. - Strengthened UI reliability, reducing user confusion and support overhead related to device selection. - Demonstrated cross-platform skill with JNI, Android VibratorManager, CombinedVibration usage, USB HID integration, and careful UI/state handling. Technologies/skills demonstrated: - Android native integration (JNI, VibratorManager, CombinedVibration) - USB HID path handling (controlTransfer, SET_REPORT, HID reports) - Cross-platform C/C++ and platform-specific code paths - Robust device enumeration, permissions handling, and lifecycle-aware UI updates Commit highlights and traceability: - Enhanced controller rumble support across Android and USB-connected devices (commit 9cee488493f7f24e6cb8a35bb3a46da240cfdb10) - Android USB/rumble fix for DS4/DualSense (commit fafb13f01ffac264d8e451fb996bd74934d39efb) - UI dropdowns reliability fix (commit 8730cdbdcddf4f67f081c74681ec11f33ccdf6f3)
April 2026
Activity
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Quality Metrics
Correctness100.0%
Maintainability86.6%
Architecture93.4%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
CGradleJava
Technical Skills
Android DevelopmentAndroid developmentC programmingGame Controller IntegrationGame DevelopmentJNISoftware debuggingUSB Communication
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