mrdoob/three.js
Oct 2024 – Jun 2026
13 Months active
Languages Used
JavaScriptHTMLGLSLCSS
Technical Skills
3D GraphicsAPI DesignGeometryGraphics RenderingJavaScriptTexture Management
Garrett Johnson
PROFILE
Garrett Johnson
Worked extensively on the mrdoob/three.js repository, delivering a range of features and fixes that advanced rendering fidelity, asset loading, and developer experience. Focused on 3D graphics and rendering, the work included enhancements to geometry batching, texture management, and shader development, as well as improvements to build systems and code quality through ESLint integration. Leveraged JavaScript, WebGL, and HTML to implement robust serialization, loader configuration, and GPU data handling. The approach emphasized maintainability, clear API design, and thorough documentation, resulting in more reliable rendering pipelines, streamlined onboarding, and reduced support overhead for both core contributors and downstream developers.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
33Total
Bugs
6
Commits
33
Features
18
Lines of code
5,659
Activity Months13
Your Network
171 peopleWork History
June 2026
2 Commits • 1 Features
Jun 1, 2026June 2026 highlights for mrdoob/three.js: Delivered centralized GLTF DRACOLoader path configuration and explicit path support to improve configurability and maintainability. Introduced a GLTF-specific DRACOLoader config object, extended the GLTF loader to accept explicit paths, and refactored internal loading logic for robustness. Updated examples to use a centralized DRACO_GLTF_CONFIG constant to ensure consistency and reduce maintenance overhead. These changes reduce misconfigurations, simplify future DRACOLoader enhancements, and enhance developer experience without breaking public APIs.
2 Commits • 1 Features
Jun 1, 2026June 2026 highlights for mrdoob/three.js: Delivered centralized GLTF DRACOLoader path configuration and explicit path support to improve configurability and maintainability. Introduced a GLTF-specific DRACOLoader config object, extended the GLTF loader to accept explicit paths, and refactored internal loading logic for robustness. Updated examples to use a centralized DRACO_GLTF_CONFIG constant to ensure consistency and reduce maintenance overhead. These changes reduce misconfigurations, simplify future DRACOLoader enhancements, and enhance developer experience without breaking public APIs.
June 2026
May 2026
4 Commits • 2 Features
May 1, 2026May 2026: Loader improvements in three.js to streamline asset loading, improve portability, and prepare API deprecation for future compatibility. Focused work on DRACOLoader and KTX2Loader with API simplifications, deprecation messaging, and example updates to reduce setup friction across environments.
May 2026
4 Commits • 2 Features
May 1, 2026May 2026: Loader improvements in three.js to streamline asset loading, improve portability, and prepare API deprecation for future compatibility. Focused work on DRACOLoader and KTX2Loader with API simplifications, deprecation messaging, and example updates to reduce setup friction across environments.
April 2026
2 Commits • 2 Features
Apr 1, 2026April 2026 was focused on strengthening the Three.js example ecosystem and enhancing GPU data handling to support more robust demos and smoother rendering. Key work centered on updating external libraries in example HTMLs for better compatibility and performance, and on optimizing GPU readback in the WebGPURenderer with partial readback support and improved memory management.
2 Commits • 2 Features
Apr 1, 2026April 2026 was focused on strengthening the Three.js example ecosystem and enhancing GPU data handling to support more robust demos and smoother rendering. Key work centered on updating external libraries in example HTMLs for better compatibility and performance, and on optimizing GPU readback in the WebGPURenderer with partial readback support and improved memory management.
April 2026
March 2026
2 Commits • 2 Features
Mar 1, 2026March 2026 monthly summary: Focused on delivering two strategic features in mrdoob/three.js that expand rendering flexibility and vertex manipulation capabilities, while laying groundwork for broader material ecosystem support. Major bugs fixed: none reported in this period. Overall impact and accomplishments: 1) SkinnedMesh gains Vector4 support for applyBoneTransform, enabling more flexible position/direction transformations and richer vertex manipulation pipelines. 2) WebGLRenderer gains a NodeMaterial compatibility layer, enabling the use of NodeMaterials and TSL node materials, expanding rendering options for artists and developers. These changes enhance extensibility, reduce friction for integrating node-based workflows, and improve the maintainability of the WebGLRenderer/Shader path. Technologies/skills demonstrated: Vector4-based transformations, NodeMaterials integration, TSL material support, modular compatibility layer design, commit-level traceability.
March 2026
2 Commits • 2 Features
Mar 1, 2026March 2026 monthly summary: Focused on delivering two strategic features in mrdoob/three.js that expand rendering flexibility and vertex manipulation capabilities, while laying groundwork for broader material ecosystem support. Major bugs fixed: none reported in this period. Overall impact and accomplishments: 1) SkinnedMesh gains Vector4 support for applyBoneTransform, enabling more flexible position/direction transformations and richer vertex manipulation pipelines. 2) WebGLRenderer gains a NodeMaterial compatibility layer, enabling the use of NodeMaterials and TSL node materials, expanding rendering options for artists and developers. These changes enhance extensibility, reduce friction for integrating node-based workflows, and improve the maintainability of the WebGLRenderer/Shader path. Technologies/skills demonstrated: Vector4-based transformations, NodeMaterials integration, TSL material support, modular compatibility layer design, commit-level traceability.
February 2026
3 Commits • 2 Features
Feb 1, 2026February 2026 performance summary for mrdoob/three.js. Focused on delivering core rendering enhancements in BatchedMesh and InstancedMesh, improving API ergonomics, and hardening color handling. Highlights include wireframe materials support in BatchedMesh, chainable accessors for InstancedMesh, and a robust default color fallback when color data is missing. These changes reduce rendering errors, improve developer experience, and increase robustness in production workloads.
3 Commits • 2 Features
Feb 1, 2026February 2026 performance summary for mrdoob/three.js. Focused on delivering core rendering enhancements in BatchedMesh and InstancedMesh, improving API ergonomics, and hardening color handling. Highlights include wireframe materials support in BatchedMesh, chainable accessors for InstancedMesh, and a robust default color fallback when color data is missing. These changes reduce rendering errors, improve developer experience, and increase robustness in production workloads.
February 2026
January 2026
2 Commits
Jan 1, 2026Month: 2026-01 Key features delivered: - BatchedMesh: correctly set nextIndexStart and nextVertexStart to fix geometry batching, improving stability for complex scenes. - LDrawConditionalLineNodeMaterial: fixed imports to ensure proper material compatibility across three.js builds. Major bugs fixed: - BatchedMesh: corrected handling of nextIndexStart and nextVertexStart to prevent incorrect geometry indexing during batching. Commit 0b75d1dc6268953de7f7b75f205b49a349b060bd (#32744). - LDrawConditionalLineNodeMaterial.js: fixed imports to ensure material functionality. Commit cd9bc6f7bdaba9c182025ea3a63297158fa1a70c (#32861). Overall impact and accomplishments: - Rendering correctness and stability improved for high-object-count scenes; reduced risk of geometry errors and material incompatibilities. - Streamlined downstream integration, lowering support overhead and boosting developer confidence. - Demonstrated solid debugging, cross-module analysis, and Git-based traceability within mrdoob/three.js. Technologies/skills demonstrated: - JavaScript/Three.js internals (BatchedMesh, material system, module imports) - Bug isolation, impact assessment, and precise commit-level traceability - Version control discipline and collaboration readiness
January 2026
2 Commits
Jan 1, 2026Month: 2026-01 Key features delivered: - BatchedMesh: correctly set nextIndexStart and nextVertexStart to fix geometry batching, improving stability for complex scenes. - LDrawConditionalLineNodeMaterial: fixed imports to ensure proper material compatibility across three.js builds. Major bugs fixed: - BatchedMesh: corrected handling of nextIndexStart and nextVertexStart to prevent incorrect geometry indexing during batching. Commit 0b75d1dc6268953de7f7b75f205b49a349b060bd (#32744). - LDrawConditionalLineNodeMaterial.js: fixed imports to ensure material functionality. Commit cd9bc6f7bdaba9c182025ea3a63297158fa1a70c (#32861). Overall impact and accomplishments: - Rendering correctness and stability improved for high-object-count scenes; reduced risk of geometry errors and material incompatibilities. - Streamlined downstream integration, lowering support overhead and boosting developer confidence. - Demonstrated solid debugging, cross-module analysis, and Git-based traceability within mrdoob/three.js. Technologies/skills demonstrated: - JavaScript/Three.js internals (BatchedMesh, material system, module imports) - Bug isolation, impact assessment, and precise commit-level traceability - Version control discipline and collaboration readiness
December 2025
4 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for mrdoob/three.js: Delivered key features and bug fixes with clear business value and technical impact. Highlights include ESLint 9 migration with a flat config to standardize code quality; rendering quality improvements via premultiplied alpha and additive blending for better visual fidelity in post-processing and shadows; and a loader consistency fix aligning LDrawLoader behavior with other loaders in terms of groups and materials. Overall, these changes improve developer productivity, code consistency, and rendering reliability for downstream projects.
4 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for mrdoob/three.js: Delivered key features and bug fixes with clear business value and technical impact. Highlights include ESLint 9 migration with a flat config to standardize code quality; rendering quality improvements via premultiplied alpha and additive blending for better visual fidelity in post-processing and shadows; and a loader consistency fix aligning LDrawLoader behavior with other loaders in terms of groups and materials. Overall, these changes improve developer productivity, code consistency, and rendering reliability for downstream projects.
December 2025
April 2025
5 Commits • 2 Features
Apr 1, 2025Month: 2025-04 — Focused on delivering two major feature areas in mrdoob/three.js: (1) a 3D Tiles Globe Demo to showcase loading/rendering 3D Tiles on a globe with external library integration and branding, and (2) serialization/bounding data enhancements to improve persistence and accuracy of geometry handling across save/load cycles.
April 2025
5 Commits • 2 Features
Apr 1, 2025Month: 2025-04 — Focused on delivering two major feature areas in mrdoob/three.js: (1) a 3D Tiles Globe Demo to showcase loading/rendering 3D Tiles on a globe with external library integration and branding, and (2) serialization/bounding data enhancements to improve persistence and accuracy of geometry handling across save/load cycles.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025: Delivered Earcut Library Integration and Build Dependency Refactor for mrdoob/three.js. Replaced in-repo earcut copies with the official external library, updated build configurations, and removed the dev dependency. Ensured correct import paths and alignment with upstream earcut, improving maintainability and build reliability.
2 Commits • 1 Features
Mar 1, 2025March 2025: Delivered Earcut Library Integration and Build Dependency Refactor for mrdoob/three.js. Replaced in-repo earcut copies with the official external library, updated build configurations, and removed the dev dependency. Ensured correct import paths and alignment with upstream earcut, improving maintainability and build reliability.
March 2025
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 performance summary for mrdoob/three.js: Delivered rendering fidelity improvements and API modernization with a focus on maintainability and business value. Key work includes a depth calculation bug fix for volume rendering in webgl_volume_instancing, introducing a shader refactor to compute screen coordinates and instance-to-view matrices, and updating Puppeteer tests to prevent flakiness. Implemented API deprecation for _multiDrawInstances across renderer backends with a formal deprecation warning to guide migration to newer rendering methods, aligning with roadmap to remove deprecated APIs in a future release. These efforts improve rendering accuracy, reduce test noise, and enable smoother transitions for developers adopting newer rendering paths.
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 performance summary for mrdoob/three.js: Delivered rendering fidelity improvements and API modernization with a focus on maintainability and business value. Key work includes a depth calculation bug fix for volume rendering in webgl_volume_instancing, introducing a shader refactor to compute screen coordinates and instance-to-view matrices, and updating Puppeteer tests to prevent flakiness. Implemented API deprecation for _multiDrawInstances across renderer backends with a formal deprecation warning to guide migration to newer rendering methods, aligning with roadmap to remove deprecated APIs in a future release. These efforts improve rendering accuracy, reduce test noise, and enable smoother transitions for developers adopting newer rendering paths.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary focusing on documented improvements and developer guidance for three.js advanced instancing features. Emphasizes business value through clearer usage constraints and reduced support overhead, with traceable work via a single commit tied to issue #30362.
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary focusing on documented improvements and developer guidance for three.js advanced instancing features. Emphasizes business value through clearer usage constraints and reduced support overhead, with traceable work via a single commit tied to issue #30362.
January 2025
December 2024
1 Commits • 1 Features
Dec 1, 2024Month: 2024-12 - Delivered WebGLRenderer Mipmap-Level Render Target Support for mrdoob/three.js, enabling rendering into specific mipmap levels of 2D render targets. Implemented via a scratch framebuffer to preserve correct rendering with depth buffers and multisample textures, paving the way for multi-resolution rendering workflows and potential performance gains by avoiding full-resolution renders where not needed. This release strengthens rendering fidelity and flexibility, with a clean integration approach and thorough testing around mipmap-level binding. This month focused on delivering a high-value feature and stabilizing the rendering pipeline, establishing baseline for future optimizations. Technologies demonstrated include WebGL/WebGL2 features, framebuffer management, mipmaps, depth buffers, multisample textures, and commit-driven delivery.
December 2024
1 Commits • 1 Features
Dec 1, 2024Month: 2024-12 - Delivered WebGLRenderer Mipmap-Level Render Target Support for mrdoob/three.js, enabling rendering into specific mipmap levels of 2D render targets. Implemented via a scratch framebuffer to preserve correct rendering with depth buffers and multisample textures, paving the way for multi-resolution rendering workflows and potential performance gains by avoiding full-resolution renders where not needed. This release strengthens rendering fidelity and flexibility, with a clean integration approach and thorough testing around mipmap-level binding. This month focused on delivering a high-value feature and stabilizing the rendering pipeline, establishing baseline for future optimizations. Technologies demonstrated include WebGL/WebGL2 features, framebuffer management, mipmaps, depth buffers, multisample textures, and commit-driven delivery.
October 2024
3 Commits • 1 Features
Oct 1, 2024October 2024 monthly performance summary for mrdoob/three.js focusing on rendering correctness and API usability. Delivered two high-impact improvements: a bug fix for ConeGeometry rendering integrity and a major WebGLRenderer texture copy API enhancement. The changes reduce rendering artifacts, enable more flexible texture management across 2D and 3D textures, and improve developer productivity through clearer APIs and better documentation.
3 Commits • 1 Features
Oct 1, 2024October 2024 monthly performance summary for mrdoob/three.js focusing on rendering correctness and API usability. Delivered two high-impact improvements: a bug fix for ConeGeometry rendering integrity and a major WebGLRenderer texture copy API enhancement. The changes reduce rendering artifacts, enable more flexible texture management across 2D and 3D textures, and improve developer productivity through clearer APIs and better documentation.
October 2024
Activity
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Quality Metrics
Correctness96.0%
Maintainability91.6%
Architecture91.2%
Performance89.4%
AI Usage24.2%
Skills & Technologies
Programming Languages
CSSGLSLHTMLJavaScript
Technical Skills
3D Graphics3D Rendering3D graphicsAPI DesignAPI designBuild SystemsBuild ToolsCode QualityDeprecation ManagementDocumentationE2E TestingESLintFront-end DevelopmentFull Stack DevelopmentGPU Programming
Repositories Contributed To
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