secondlife/viewer
Mar 2024 – Feb 2026
19 Months active
Languages Used
C++XMLCTextGLSLObjective-CCMakeShell
Technical Skills
C++C++ ProgrammingC++ developmentGame DevelopmentSoftware DevelopmentUI Development
Andrey Kleshchev
PROFILE
Andrey Kleshchev
Andrey K. contributed to the secondlife/viewer repository by building and refining core features across rendering, asset pipelines, and cross-platform UI, with a focus on stability and user experience. He engineered robust GLTF and DAE model import workflows, implemented rigged mesh and skinning support, and optimized memory and performance for both Windows and macOS. Using C++ and Python, Andrey addressed concurrency, crash handling, and build system modernization, while integrating telemetry and debugging utilities to streamline maintenance. His work demonstrated depth in graphics programming, multithreading, and UI development, consistently reducing crash surfaces and improving reliability for creators and end users alike.
Overall Statistics
Feature vs Bugs
37%Features
Repository Contributions
386Total
Bugs
150
Commits
386
Features
88
Lines of code
21,173
Activity Months19
Your Network
56 peopleSame Organization
@lindenlab.com14
Work History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 – Delivered MacOS Event Handling Stabilization with Watchdog in secondlife/viewer. Implemented a watchdog mechanism to guarantee events are processed even when they occur outside the main event loop, addressing scenarios where the watchdog ends the frame and ensuring stability across macOS builds. This change reduces flaky input handling, improves reliability, and lowers support risk for macOS users. Commit reference available for traceability: c94a118af80367c3f73cfe93559185c8f2cf3750.
1 Commits • 1 Features
Feb 1, 2026February 2026 – Delivered MacOS Event Handling Stabilization with Watchdog in secondlife/viewer. Implemented a watchdog mechanism to guarantee events are processed even when they occur outside the main event loop, addressing scenarios where the watchdog ends the frame and ensuring stability across macOS builds. This change reduces flaky input handling, improves reliability, and lowers support risk for macOS users. Commit reference available for traceability: c94a118af80367c3f73cfe93559185c8f2cf3750.
February 2026
January 2026
2 Commits • 2 Features
Jan 1, 2026January 2026 monthly summary for secondlife/viewer: Delivered two key features and stabilized rendering on Apple Silicon. Key features: 1) Enhanced frame synchronization for 360 capture and voice client by replacing llcoro::suspend() with llcoro::suspendUntilNextFrame() to fix wait logic (commit 06aff165e7c2bd5f1a4ef685b32ce2ca8e427f52, #5046). 2) Apple Silicon GPU handling optimization to prevent excessive rendering levels, boosting stability and performance (commit 3caf20f4c43173393c10b9cecbb266a4f7ff3702, #2639). Major bug fixes/optimizations: 3) Render level capped at med+ on Apple Silicon to stabilize performance and reduce GPU load until shadows are fixed (commit 3caf20f4c43173393c10b9cecbb266a4f7ff3702, #2639). Overall impact: smoother real-time capture and voice experiences, improved cross‑platform stability, and more predictable rendering behavior. Technologies demonstrated: coroutine-based frame pacing (llcoro), Apple Silicon GPU tuning, benchmarking-driven fixes, clean commit messaging. Business value: higher reliability for capture/communication features, better user experience, and broader hardware support with lower power/thermal footprint.
January 2026
2 Commits • 2 Features
Jan 1, 2026January 2026 monthly summary for secondlife/viewer: Delivered two key features and stabilized rendering on Apple Silicon. Key features: 1) Enhanced frame synchronization for 360 capture and voice client by replacing llcoro::suspend() with llcoro::suspendUntilNextFrame() to fix wait logic (commit 06aff165e7c2bd5f1a4ef685b32ce2ca8e427f52, #5046). 2) Apple Silicon GPU handling optimization to prevent excessive rendering levels, boosting stability and performance (commit 3caf20f4c43173393c10b9cecbb266a4f7ff3702, #2639). Major bug fixes/optimizations: 3) Render level capped at med+ on Apple Silicon to stabilize performance and reduce GPU load until shadows are fixed (commit 3caf20f4c43173393c10b9cecbb266a4f7ff3702, #2639). Overall impact: smoother real-time capture and voice experiences, improved cross‑platform stability, and more predictable rendering behavior. Technologies demonstrated: coroutine-based frame pacing (llcoro), Apple Silicon GPU tuning, benchmarking-driven fixes, clean commit messaging. Business value: higher reliability for capture/communication features, better user experience, and broader hardware support with lower power/thermal footprint.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Focused on improving MacOS keyboard input reliability in LLViewerWindow for the secondlife/viewer repo, delivering a targeted refactor and a MacOS build fix to stabilize cross-platform input handling and reduce user-reported issues. The work enhances business value by improving user experience on MacOS and lowers maintenance burden through consolidated platform-specific logic.
1 Commits • 1 Features
Dec 1, 2025December 2025: Focused on improving MacOS keyboard input reliability in LLViewerWindow for the secondlife/viewer repo, delivering a targeted refactor and a MacOS build fix to stabilize cross-platform input handling and reduce user-reported issues. The work enhances business value by improving user experience on MacOS and lowers maintenance burden through consolidated platform-specific logic.
December 2025
November 2025
3 Commits • 2 Features
Nov 1, 2025November 2025: Delivered critical telemetry reliability and UX improvements for the viewer. Upgraded crash reporting with Bugsplat v1.2.6 on macOS, enhanced log handling and reliability, and added support for CrashReporter and HockeySDK. Implemented a modeless MacOS file picker to enable non-blocking uploads, improving user flow. These changes improved crash triage reliability, reduced user friction during uploads, and positioned the product for proactive stability monitoring.
November 2025
3 Commits • 2 Features
Nov 1, 2025November 2025: Delivered critical telemetry reliability and UX improvements for the viewer. Upgraded crash reporting with Bugsplat v1.2.6 on macOS, enhanced log handling and reliability, and added support for CrashReporter and HockeySDK. Implemented a modeless MacOS file picker to enable non-blocking uploads, improving user flow. These changes improved crash triage reliability, reduced user friction during uploads, and positioned the product for proactive stability monitoring.
September 2025
11 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for secondlife/viewer focused on reliability, performance, and build hygiene. Key outcomes include multi-thread safety hardening in the mesh pipeline, substantial HUD stability improvements, shader caching optimizations, and a modernized build/dependency workflow that reduces maintenance burden and improves cross-platform consistency. The month culminated in a version bump to 7.2.2 to reflect release progress.
11 Commits • 3 Features
Sep 1, 2025September 2025 monthly summary for secondlife/viewer focused on reliability, performance, and build hygiene. Key outcomes include multi-thread safety hardening in the mesh pipeline, substantial HUD stability improvements, shader caching optimizations, and a modernized build/dependency workflow that reduces maintenance burden and improves cross-platform consistency. The month culminated in a version bump to 7.2.2 to reflect release progress.
September 2025
August 2025
43 Commits • 9 Features
Aug 1, 2025August 2025 (2025-08) monthly summary for secondlife/viewer. Delivered features emphasize social integration, navigation UX, and stability/performance, with cross‑platform build reliability improvements. The team prioritized user value, onboarding smoothness, and robust crash prevention while expanding in-world interaction options.
August 2025
43 Commits • 9 Features
Aug 1, 2025August 2025 (2025-08) monthly summary for secondlife/viewer. Delivered features emphasize social integration, navigation UX, and stability/performance, with cross‑platform build reliability improvements. The team prioritized user value, onboarding smoothness, and robust crash prevention while expanding in-world interaction options.
July 2025
41 Commits • 10 Features
Jul 1, 2025July 2025 monthly summary for secondlife/viewer: Delivered stability and user-experience improvements across the GLTF import workflow, logging, and core viewer features. Strengthened reliability with multiple crash mitigations, raised performance with cache optimizations and deterministic upload ordering, and added telemetry to better understand usage and issues. The team shipped user-facing UX improvements and robust debugging utilities to reduce support time and enable faster iteration.
41 Commits • 10 Features
Jul 1, 2025July 2025 monthly summary for secondlife/viewer: Delivered stability and user-experience improvements across the GLTF import workflow, logging, and core viewer features. Strengthened reliability with multiple crash mitigations, raised performance with cache optimizations and deterministic upload ordering, and added telemetry to better understand usage and issues. The team shipped user-facing UX improvements and robust debugging utilities to reduce support time and enable faster iteration.
July 2025
June 2025
21 Commits • 6 Features
Jun 1, 2025June 2025 performance summary for secondlife/viewer: Focused on expanding asset compatibility, improving stability, and enabling richer content creation workflows. Key features delivered include rigged mesh support with skeleton and skinning integration; skeleton translation improvements across models with collision bone fixes; GLTF import enhancements spanning mesh splitting for large material sets, weights/joints remapping, and material upload fixes; joint bind matrices management with mAlternateBindMatrices relocation and implementation of joint overrides; and GLTF face index size limit splitting to support meshes with large index data. Major bug fixes addressed stability and reliability in the asset pipeline, including a crash on DAE model uploads, silent failures when uploading without a .bin file, crashes in clearAndDeparentModels, generateVertexRemapMulti, and readProfileQuery. Overall, these changes improve content creator productivity, reduce import errors, and enhance cross-platform consistency for rigged assets and GLTF/DAE workflows.
June 2025
21 Commits • 6 Features
Jun 1, 2025June 2025 performance summary for secondlife/viewer: Focused on expanding asset compatibility, improving stability, and enabling richer content creation workflows. Key features delivered include rigged mesh support with skeleton and skinning integration; skeleton translation improvements across models with collision bone fixes; GLTF import enhancements spanning mesh splitting for large material sets, weights/joints remapping, and material upload fixes; joint bind matrices management with mAlternateBindMatrices relocation and implementation of joint overrides; and GLTF face index size limit splitting to support meshes with large index data. Major bug fixes addressed stability and reliability in the asset pipeline, including a crash on DAE model uploads, silent failures when uploading without a .bin file, crashes in clearAndDeparentModels, generateVertexRemapMulti, and readProfileQuery. Overall, these changes improve content creator productivity, reduce import errors, and enhance cross-platform consistency for rigged assets and GLTF/DAE workflows.
May 2025
33 Commits • 6 Features
May 1, 2025May 2025 monthly summary for the secondlife/viewer repository focused on delivering core feature improvements, expanding cross-platform compatibility, and hardening the stability and reliability of the viewer. The month combined new asset pipelines, UX enhancements, and collaboration-wide testing coverage with substantial crash fixes across UI, rendering, and asset loading subsystems.
33 Commits • 6 Features
May 1, 2025May 2025 monthly summary for the secondlife/viewer repository focused on delivering core feature improvements, expanding cross-platform compatibility, and hardening the stability and reliability of the viewer. The month combined new asset pipelines, UX enhancements, and collaboration-wide testing coverage with substantial crash fixes across UI, rendering, and asset loading subsystems.
May 2025
April 2025
59 Commits • 9 Features
Apr 1, 2025Monthly summary for 2025-04 (secondlife/viewer): The team delivered stability, performance, and usability improvements across rendering, UI, and core systems. Notable outcomes include build-system modernization, expanded GLTF/model capabilities, VRAM-aware optimizations, and comprehensive crash fixes that improve reliability for both creators and residents. The month also introduced UI enhancements and observability improvements to support faster debugging and better user workflows, with performance gains in startup/shutdown latency and overall responsiveness.
April 2025
59 Commits • 9 Features
Apr 1, 2025Monthly summary for 2025-04 (secondlife/viewer): The team delivered stability, performance, and usability improvements across rendering, UI, and core systems. Notable outcomes include build-system modernization, expanded GLTF/model capabilities, VRAM-aware optimizations, and comprehensive crash fixes that improve reliability for both creators and residents. The month also introduced UI enhancements and observability improvements to support faster debugging and better user workflows, with performance gains in startup/shutdown latency and overall responsiveness.
March 2025
42 Commits • 8 Features
Mar 1, 2025March 2025 performance summary for the secondlife/viewer project focused on stability, performance, and platform reliability across macOS, rendering, and UI layers. Delivered a combination of platform fixes, rendering/texture tuning, and robust error handling, along with an OpenAL-Soft library upgrade and targeted UX improvements.
42 Commits • 8 Features
Mar 1, 2025March 2025 performance summary for the secondlife/viewer project focused on stability, performance, and platform reliability across macOS, rendering, and UI layers. Delivered a combination of platform fixes, rendering/texture tuning, and robust error handling, along with an OpenAL-Soft library upgrade and targeted UX improvements.
March 2025
February 2025
33 Commits • 9 Features
Feb 1, 2025February 2025 performance summary for secondlife/viewer: delivered targeted improvements in avatar rendering, UI stability, and data handling, with a strong emphasis on responsive user experience and maintainability. Key avatar pipeline optimizations reduced LOD processing on the mesh thread, corrected mesh/cache handling, and accelerated nearby avatar loading after teleports, contributing to smoother scenes in crowded areas. UI/text rendering stability fixes improved consistency during screen transitions and supported multi-byte glyphs, reducing visual glitches. Inventory performance work reduced unnecessary content checks and throttled updates, boosting frame-time during asset fetches. Reliability improvements included voice reconnection fixes, crash-test expansions, and safer handling of references, increasing session stability. Cache strategy enhancements and naming optimizations further reduced startup and lookup latency while lowering memory pressure.
February 2025
33 Commits • 9 Features
Feb 1, 2025February 2025 performance summary for secondlife/viewer: delivered targeted improvements in avatar rendering, UI stability, and data handling, with a strong emphasis on responsive user experience and maintainability. Key avatar pipeline optimizations reduced LOD processing on the mesh thread, corrected mesh/cache handling, and accelerated nearby avatar loading after teleports, contributing to smoother scenes in crowded areas. UI/text rendering stability fixes improved consistency during screen transitions and supported multi-byte glyphs, reducing visual glitches. Inventory performance work reduced unnecessary content checks and throttled updates, boosting frame-time during asset fetches. Reliability improvements included voice reconnection fixes, crash-test expansions, and safer handling of references, increasing session stability. Cache strategy enhancements and naming optimizations further reduced startup and lookup latency while lowering memory pressure.
January 2025
41 Commits • 10 Features
Jan 1, 2025January 2025 (Month: 2025-01) focused on stabilizing the viewer, optimizing memory usage, and improving UX across core subsystems. Delivered a suite of crash fixes across rendering and folder systems, implemented a texture resolution cap to constrain memory, improved tonemapper engagement and fullscreen behavior on Windows 11, and enhanced mesh processing and telemetry. UX improvements include dynamic MotD resizing, refined Favorites/Folder UI behavior, and re-adding favorited items after parent removal. Added session-id tracing for exec events and reworked crash statistics markers to improve diagnosis. These changes collectively reduce crash surface, stabilize performance across diverse hardware, and enable a smoother experience for creators and customers.
41 Commits • 10 Features
Jan 1, 2025January 2025 (Month: 2025-01) focused on stabilizing the viewer, optimizing memory usage, and improving UX across core subsystems. Delivered a suite of crash fixes across rendering and folder systems, implemented a texture resolution cap to constrain memory, improved tonemapper engagement and fullscreen behavior on Windows 11, and enhanced mesh processing and telemetry. UX improvements include dynamic MotD resizing, refined Favorites/Folder UI behavior, and re-adding favorited items after parent removal. Added session-id tracing for exec events and reworked crash statistics markers to improve diagnosis. These changes collectively reduce crash surface, stabilize performance across diverse hardware, and enable a smoother experience for creators and customers.
January 2025
December 2024
13 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for secondlife/viewer. Delivered stability and quality improvements across core subsystems, including material/LOD handling, legacy/vintage mode stability, UI string handling, graphics/region safety, and avatar UI usability. These changes reduce crash surfaces, prevent unintended configuration changes, and improve rendering correctness and user experience. The work demonstrates proficiency in C++ graphics pipeline, memory/material handling, UI initialization, and robust error reporting, enabling faster debugging and reduced support burden.
December 2024
13 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for secondlife/viewer. Delivered stability and quality improvements across core subsystems, including material/LOD handling, legacy/vintage mode stability, UI string handling, graphics/region safety, and avatar UI usability. These changes reduce crash surfaces, prevent unintended configuration changes, and improve rendering correctness and user experience. The work demonstrates proficiency in C++ graphics pipeline, memory/material handling, UI initialization, and robust error reporting, enabling faster debugging and reduced support burden.
November 2024
23 Commits • 3 Features
Nov 1, 2024November 2024 monthly summary for secondlife/viewer focused on stability hardening, performance, and user-facing quality improvements. Delivered a set of targeted fixes and improvements across rendering, memory reporting, and UI, with strong emphasis on business value through reliability, faster content delivery, and enhanced user control.
23 Commits • 3 Features
Nov 1, 2024November 2024 monthly summary for secondlife/viewer focused on stability hardening, performance, and user-facing quality improvements. Delivered a set of targeted fixes and improvements across rendering, memory reporting, and UI, with strong emphasis on business value through reliability, faster content delivery, and enhanced user control.
November 2024
October 2024
5 Commits • 1 Features
Oct 1, 2024October 2024 performance summary for secondlife/viewer: Delivered stability and correctness improvements across XML-RPC handling, texture loading, and thread lifecycle, plus a targeted crash fix in voice observer handling. Key improvements include robust XML-RPC text extraction preserving required quotes; corrected LOD texture calculation with discard callbacks to avoid artifacts; added a configurable automatic shutdown parameter for thread queues to enable explicit lifecycle management; fixed water normal map and transparent texture ID loading by reading settings with proper type casting; and cleaned up voice session observer handling to prevent crashes and dangling pointers through static-method refactors and improved signal connections. Business impact: reduced user-visible issues, more deterministic resource management, and improved rendering reliability.
October 2024
5 Commits • 1 Features
Oct 1, 2024October 2024 performance summary for secondlife/viewer: Delivered stability and correctness improvements across XML-RPC handling, texture loading, and thread lifecycle, plus a targeted crash fix in voice observer handling. Key improvements include robust XML-RPC text extraction preserving required quotes; corrected LOD texture calculation with discard callbacks to avoid artifacts; added a configurable automatic shutdown parameter for thread queues to enable explicit lifecycle management; fixed water normal map and transparent texture ID loading by reading settings with proper type casting; and cleaned up voice session observer handling to prevent crashes and dangling pointers through static-method refactors and improved signal connections. Business impact: reduced user-visible issues, more deterministic resource management, and improved rendering reliability.
May 2024
1 Commits
May 1, 2024Delivered a critical bug fix for the viewer’s performance floater detach functionality by correcting detachment logic to use object IDs instead of attachment IDs, restoring expected behavior and stabilizing user workflows in the May 2024 cycle.
1 Commits
May 1, 2024Delivered a critical bug fix for the viewer’s performance floater detach functionality by correcting detachment logic to use object IDs instead of attachment IDs, restoring expected behavior and stabilizing user workflows in the May 2024 cycle.
May 2024
April 2024
6 Commits • 3 Features
Apr 1, 2024April 2024 performance summary for secondlife/viewer: Delivered UX enhancements, stability improvements, and configurable performance settings. Key features include OSX universal file-type support for model uploads, adjustable impostors cap in graphics preferences, and Marketplace UX alignment. Major reliability fixes addressed inventory folder creation callbacks, and logging improvements standardized cef.log naming with per-session deletion optimization. These changes collectively reduce user friction, improve cross-platform consistency, and provide operators with better diagnostics and control over visual performance.
April 2024
6 Commits • 3 Features
Apr 1, 2024April 2024 performance summary for secondlife/viewer: Delivered UX enhancements, stability improvements, and configurable performance settings. Key features include OSX universal file-type support for model uploads, adjustable impostors cap in graphics preferences, and Marketplace UX alignment. Major reliability fixes addressed inventory folder creation callbacks, and logging improvements standardized cef.log naming with per-session deletion optimization. These changes collectively reduce user friction, improve cross-platform consistency, and provide operators with better diagnostics and control over visual performance.
March 2024
7 Commits • 2 Features
Mar 1, 2024March 2024 monthly summary for secondlife/viewer focusing on business value and technical achievement. Delivered stability improvements and UX enhancements across the viewer, addressing both critical bugs and rendering correctness, while advancing observability to support proactive maintenance.
7 Commits • 2 Features
Mar 1, 2024March 2024 monthly summary for secondlife/viewer focusing on business value and technical achievement. Delivered stability improvements and UX enhancements across the viewer, addressing both critical bugs and rendering correctness, while advancing observability to support proactive maintenance.
March 2024
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Quality Metrics
Correctness84.8%
Maintainability83.4%
Architecture77.2%
Performance74.4%
AI Usage20.2%
Skills & Technologies
Programming Languages
CC++CMakeGLSLNSISObjective-CObjective-C++PythonShellText
Technical Skills
3D Graphics3D Model LoadingAlgorithm ImplementationAlgorithm OptimizationAnimationAnimation SystemsAsset LoadingAsset ManagementAsset RenderingAsynchronous ProgrammingAudio EngineeringAudio ProcessingAvatar ManagementAvatar RenderingBug Fix
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