mrdoob/three.js
Oct 2024 – Apr 2026
11 Months active
Languages Used
JavaScriptHTMLGLSLCSS
Technical Skills
3D GraphicsAPI DesignGeometryGraphics RenderingJavaScriptTexture Management
Garrett Johnson
PROFILE
Garrett Johnson
Garrett Johnson contributed to mrdoob/three.js by building and refining core rendering features, improving API design, and enhancing code quality across the project. He delivered robust solutions for geometry batching, texture management, and serialization, using JavaScript, WebGL, and shader development to address rendering correctness and performance. His work included integrating external libraries, optimizing GPU data handling, and modernizing build systems, all while maintaining clear documentation and deprecating outdated APIs. By focusing on maintainability and developer experience, Garrett ensured smoother onboarding, reduced support overhead, and enabled advanced workflows, demonstrating depth in 3D graphics programming and full stack development within a complex codebase.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
27Total
Bugs
6
Commits
27
Features
15
Lines of code
5,414
Activity Months11
Your Network
149 peopleWork History
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
Correctness95.2%
Maintainability89.6%
Architecture89.2%
Performance89.2%
AI Usage22.2%
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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