
Eugene Kharkunov contributed to the defold/defold repository by engineering robust cross-platform build systems, graphics pipelines, and runtime APIs over a twelve-month period. He delivered features such as public graphics APIs, animation system enhancements, and runtime texture array support, while also addressing complex bugs in rendering, synchronization, and packaging. Eugene’s technical approach emphasized modular C++ development, Lua scripting for engine extensibility, and CI/CD automation to ensure reliability across Windows, Linux, Android, and web targets. His work demonstrated depth in graphics programming, build tooling, and resource management, resulting in improved stability, maintainability, and developer experience throughout the codebase.
Monthly summary for 2025-10 (defold/defold): Focused on restoring stability in the sprite rendering pipeline while delivering performance and caching improvements. Resulted in smoother animations, more reliable frustum culling, and improved resource handling across the rendering stack.
Monthly summary for 2025-10 (defold/defold): Focused on restoring stability in the sprite rendering pipeline while delivering performance and caching improvements. Resulted in smoother animations, more reliable frustum culling, and improved resource handling across the rendering stack.
September 2025 - defold/defold: Key features delivered cover CI Build Environment Modernization, Public Graphics and Rendering APIs for External Use, Packaging and Build Reliability Enhancements, and Animation System Enhancements with Sprite Rendering Fixes. These initiatives standardize the Windows CI runners (Windows-2025), expose public graphics APIs with updated GetScaleFactor and resource management, harden packaging with explicit GLFW header packaging and DSYM zip tasks, and improve rendering correctness via a double-linked animation cache with optimized sprite rendering and corrected world positions. Impact: reduced CI variability and build times, easier external integration with public APIs, fewer packaging failures, and more reliable and accurate rendering. Technologies demonstrated: CI/CD modernization, Windows infrastructure, graphics API design and packaging, render pipeline optimization, and debugging/quality tooling.
September 2025 - defold/defold: Key features delivered cover CI Build Environment Modernization, Public Graphics and Rendering APIs for External Use, Packaging and Build Reliability Enhancements, and Animation System Enhancements with Sprite Rendering Fixes. These initiatives standardize the Windows CI runners (Windows-2025), expose public graphics APIs with updated GetScaleFactor and resource management, harden packaging with explicit GLFW header packaging and DSYM zip tasks, and improve rendering correctness via a double-linked animation cache with optimized sprite rendering and corrected world positions. Impact: reduced CI variability and build times, easier external integration with public APIs, fewer packaging failures, and more reliable and accurate rendering. Technologies demonstrated: CI/CD modernization, Windows infrastructure, graphics API design and packaging, render pipeline optimization, and debugging/quality tooling.
Month: 2025-08 — Delivered key enhancements in defold/defold focused on build reliability and packaging automation. Implemented Cocoapods builder integration with explicit framework path handling and extended extender client with archive-based build/packaging workflows. These changes reduce build failures, streamline artifact delivery, and enable reproducible CI pipelines across iOS and macOS.
Month: 2025-08 — Delivered key enhancements in defold/defold focused on build reliability and packaging automation. Implemented Cocoapods builder integration with explicit framework path handling and extended extender client with archive-based build/packaging workflows. These changes reduce build failures, streamline artifact delivery, and enable reproducible CI pipelines across iOS and macOS.
Monthly summary for 2025-07: Delivered Swift build parallelization feature for defold/defold by adding a parallelJobs flag to build configurations to enable parallel Swift compilation. Default is 1 (sequential) but can be overridden to reduce build times. This change improves CI throughput and developer productivity on larger Swift codebases. No major bugs fixed this month. Key technologies demonstrated: build system configuration, parallelism strategies, and backward-compatible defaults.
Monthly summary for 2025-07: Delivered Swift build parallelization feature for defold/defold by adding a parallelJobs flag to build configurations to enable parallel Swift compilation. Default is 1 (sequential) but can be overridden to reduce build times. This change improves CI throughput and developer productivity on larger Swift codebases. No major bugs fixed this month. Key technologies demonstrated: build system configuration, parallelism strategies, and backward-compatible defaults.
June 2025 (defold/defold) - Focused on stability, build reliability, and cross-environment script loading to improve production quality and debugging efficiency. Three targeted fixes delivered across graphics, Android builds, and CSP-compliant script loading.
June 2025 (defold/defold) - Focused on stability, build reliability, and cross-environment script loading to improve production quality and debugging efficiency. Three targeted fixes delivered across graphics, Android builds, and CSP-compliant script loading.
Monthly summary for May 2025 for the defold/defold repo focusing on delivered features, bug fixes, impact, and skills demonstrated. Highlights include WebAssembly pthread support fixes, CI timeout improvements, OpenGL texture upload size calculation fix, runtime texture array support, and threading/mutex enhancements. These changes improve build reliability, CI stability, rendering correctness, and runtime capabilities, leveraging WebAssembly, Emscripten, OpenGL, and multi-threading concepts.
Monthly summary for May 2025 for the defold/defold repo focusing on delivered features, bug fixes, impact, and skills demonstrated. Highlights include WebAssembly pthread support fixes, CI timeout improvements, OpenGL texture upload size calculation fix, runtime texture array support, and threading/mutex enhancements. These changes improve build reliability, CI stability, rendering correctness, and runtime capabilities, leveraging WebAssembly, Emscripten, OpenGL, and multi-threading concepts.
Concise monthly summary for 2025-04 focusing on business value and technical achievements across the defold/defold repository.
Concise monthly summary for 2025-04 focusing on business value and technical achievements across the defold/defold repository.
March 2025 monthly summary for defold/defold focusing on delivering cross-platform graphics and input reliability, expanding Linux Vulkan/WebGPU support, and enhancing frame capture accuracy while fixing build/config issues across macOS/Linux.
March 2025 monthly summary for defold/defold focusing on delivering cross-platform graphics and input reliability, expanding Linux Vulkan/WebGPU support, and enhancing frame capture accuracy while fixing build/config issues across macOS/Linux.
February 2025 performance summary for defold/defold: Focused on expanding cross-architecture support by implementing Arm64 Linux coverage for Extender. Refactored the Linux build configuration to be generic, with dedicated x86_64-linux and arm64-linux targets. No major bugs fixed this period. This work increases deployment options, improves platform reach, and sets the stage for ARM64 CI and broader CI pipelines.
February 2025 performance summary for defold/defold: Focused on expanding cross-architecture support by implementing Arm64 Linux coverage for Extender. Refactored the Linux build configuration to be generic, with dedicated x86_64-linux and arm64-linux targets. No major bugs fixed this period. This work increases deployment options, improves platform reach, and sets the stage for ARM64 CI and broader CI pipelines.
January 2025 — Defold/defold delivered cross-platform build and rendering improvements: Android META-INF inclusion, consistent web visuals, hardened Xcode packaging, and configurable web graphics transparency. These changes improve artifact integrity, rendering consistency, and build reliability across Android, macOS/iOS, and web targets.
January 2025 — Defold/defold delivered cross-platform build and rendering improvements: Android META-INF inclusion, consistent web visuals, hardened Xcode packaging, and configurable web graphics transparency. These changes improve artifact integrity, rendering consistency, and build reliability across Android, macOS/iOS, and web targets.
Monthly performance summary for 2024-12 focused on delivering stability, performance, and cross-language build improvements in the defold/defold repository. Work emphasizes build optimization, profiler reliability, rendering stability, and Swift tooling fixes.
Monthly performance summary for 2024-12 focused on delivering stability, performance, and cross-language build improvements in the defold/defold repository. Work emphasizes build optimization, profiler reliability, rendering stability, and Swift tooling fixes.
November 2024 was focused on stability and developer experience for defold/defold. Concrete deliverables include: OpenGL rendering improvements enabling correct alpha handling and robust context loss/restoration (commits 37ea03f646eef678385777e7fc8c27574822edff; 36041d6864d7969b9a89de00dc4bdb2d50b18780). Build-system and environment upgrades to improve cross-platform reliability (commits 3c41df97c92a1af84777bee561463e15bb2e6220; 1645c043da32d8b31397627532897ea974c02935; 4ab474af2f1daffd86e3a0b79190ccff01660bd6; 4bd4d8c3ec1ce3dc060b239733cfe17ab4a9e412; 8a4aecb835f3dd3e364f5034376c98aa70c2aa84; b8836929561a03916d2bae3b467ba9708662ac8e; 2798da5122901ae386258fd699852f131d5502f2). File synchronization reliability improvements with retry reset on success and removal of unnecessary workarounds (commit c68d192a63ad51ff9e8b9cbfa635eab108162bf5). Web build initialization stabilization to prevent double initialization and ensure error handler registration within runApp (commit 5cffdac91340aa8e50f0c139ad483f8ab35d8dc2). These changes collectively reduce build failures, improve runtime stability, and streamline contributor onboarding.
November 2024 was focused on stability and developer experience for defold/defold. Concrete deliverables include: OpenGL rendering improvements enabling correct alpha handling and robust context loss/restoration (commits 37ea03f646eef678385777e7fc8c27574822edff; 36041d6864d7969b9a89de00dc4bdb2d50b18780). Build-system and environment upgrades to improve cross-platform reliability (commits 3c41df97c92a1af84777bee561463e15bb2e6220; 1645c043da32d8b31397627532897ea974c02935; 4ab474af2f1daffd86e3a0b79190ccff01660bd6; 4bd4d8c3ec1ce3dc060b239733cfe17ab4a9e412; 8a4aecb835f3dd3e364f5034376c98aa70c2aa84; b8836929561a03916d2bae3b467ba9708662ac8e; 2798da5122901ae386258fd699852f131d5502f2). File synchronization reliability improvements with retry reset on success and removal of unnecessary workarounds (commit c68d192a63ad51ff9e8b9cbfa635eab108162bf5). Web build initialization stabilization to prevent double initialization and ensure error handler registration within runApp (commit 5cffdac91340aa8e50f0c139ad483f8ab35d8dc2). These changes collectively reduce build failures, improve runtime stability, and streamline contributor onboarding.

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