Autodesk/maya-usd
Jul 2024 – Jan 2026
14 Months active
Languages Used
C++PythonCMakeMAMELUSDUsdaXML
Technical Skills
Maya plugin developmentUSD integrationgraphics programmingshader developmentBuild SystemC++
Jerry Gamache
PROFILE
Jerry Gamache
Jerry Gamache developed and maintained advanced material and shader workflows in the Autodesk/maya-usd repository, focusing on robust MaterialX integration, color management, and USD interoperability. He engineered features such as OpenPBR MaterialX import/export, shader node enumeration optimization, and cross-version upgrade tooling, using C++, Python, and CMake. His work included refactoring build systems, enhancing test automation, and improving attribute and metadata handling to ensure reliability across Maya and USD pipelines. By addressing compatibility, performance, and maintainability, Jerry delivered solutions that streamlined artist workflows, reduced manual conversion, and improved rendering consistency, demonstrating depth in graphics programming and plugin development for production environments.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
69Total
Bugs
8
Commits
69
Features
24
Lines of code
13,687
Activity Months14
Your Network
99 people
Work History
January 2026
7 Commits • 2 Features
Jan 1, 2026January 2026 performance summary for Autodesk/maya-usd: Delivered MaterialX upgrade and material creation enhancements for Maya USD integration, added version guards and test robustness to MaterialX features, and strengthened upgrade reliability to reduce risk and improve material workflows. Focused on stability, correctness, and demonstrable business impact through targeted commits and tests.
7 Commits • 2 Features
Jan 1, 2026January 2026 performance summary for Autodesk/maya-usd: Delivered MaterialX upgrade and material creation enhancements for Maya USD integration, added version guards and test robustness to MaterialX features, and strengthened upgrade reliability to reduce risk and improve material workflows. Focused on stability, correctness, and demonstrable business impact through targeted commits and tests.
January 2026
December 2025
13 Commits • 2 Features
Dec 1, 2025December 2025 performance summary for Autodesk/maya-usd. Delivered enhancements to MaterialX material handling and expanded shader support, reinforcing compatibility, artist productivity, and USD color management alignment. Key investments focused on upgrading legacy materials, extending shader options, and stabilizing the upgrade workflow across platforms.
December 2025
13 Commits • 2 Features
Dec 1, 2025December 2025 performance summary for Autodesk/maya-usd. Delivered enhancements to MaterialX material handling and expanded shader support, reinforcing compatibility, artist productivity, and USD color management alignment. Key investments focused on upgrading legacy materials, extending shader options, and stabilizing the upgrade workflow across platforms.
November 2025
1 Commits • 1 Features
Nov 1, 2025Monthly summary for 2025-11: Autodesk/maya-usd delivered a Shader Node Enumeration Efficiency Improvement by introducing logic to skip deprecated USD shader nodes during enumeration, reducing unnecessary processing and improving shader handling performance for users. This work focused on performance optimization and does not reflect a separate bug fix. Impact: faster shader enumeration, lower CPU usage, and improved scalability for shader pipelines in typical workflows. Technologies/skills demonstrated: USD shader enumeration, deprecation handling, performance profiling and optimization, version-controlled feature delivery (commit 08c9462bfa2e3544136dc224a71ae0e455ea89f2).
1 Commits • 1 Features
Nov 1, 2025Monthly summary for 2025-11: Autodesk/maya-usd delivered a Shader Node Enumeration Efficiency Improvement by introducing logic to skip deprecated USD shader nodes during enumeration, reducing unnecessary processing and improving shader handling performance for users. This work focused on performance optimization and does not reflect a separate bug fix. Impact: faster shader enumeration, lower CPU usage, and improved scalability for shader pipelines in typical workflows. Technologies/skills demonstrated: USD shader enumeration, deprecation handling, performance profiling and optimization, version-controlled feature delivery (commit 08c9462bfa2e3544136dc224a71ae0e455ea89f2).
November 2025
October 2025
2 Commits
Oct 1, 2025October 2025 performance focused on stabilizing shader classification in maya-usd. Delivered a robustness fix for UsdSoloingHandler to prevent misclassification of shader types by moving classification logic to initialization time, addressing a regression introduced by output formatting changes. Also added null checks and clarifying comments to reduce crash risk and improve long-term maintainability, with changes limited to non-breaking updates and thorough inline documentation.
October 2025
2 Commits
Oct 1, 2025October 2025 performance focused on stabilizing shader classification in maya-usd. Delivered a robustness fix for UsdSoloingHandler to prevent misclassification of shader types by moving classification logic to initialization time, addressing a regression introduced by output formatting changes. Also added null checks and clarifying comments to reduce crash risk and improve long-term maintainability, with changes limited to non-breaking updates and thorough inline documentation.
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary focusing on Autodesk/maya-usd: Delivered a user-facing naming improvement for NodeDefs and Material outputs, with safeguards to ensure consistent, prettified names and dedicated test coverage to prevent regressions. This work enhances UX for material naming and reduces downstream confusion in render pipelines.
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary focusing on Autodesk/maya-usd: Delivered a user-facing naming improvement for NodeDefs and Material outputs, with safeguards to ensure consistent, prettified names and dedicated test coverage to prevent regressions. This work enhances UX for material naming and reduces downstream confusion in render pipelines.
September 2025
July 2025
7 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for Autodesk/maya-usd focusing on delivering color management for shader assets and maintaining MaterialX compatibility across versions, with strengthened tests and code quality improvements that reduce downstream risk and enable smoother cross-DCC workflows.
July 2025
7 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for Autodesk/maya-usd focusing on delivering color management for shader assets and maintaining MaterialX compatibility across versions, with strengthened tests and code quality improvements that reduce downstream risk and enable smoother cross-DCC workflows.
June 2025
1 Commits
Jun 1, 2025June 2025: Focused on color-management compatibility for Autodesk/maya-usd. Updated tests to recognize both old 'sRGB' and new 'sRGB Encoded Rec.709 (sRGB)' color space names to align with Maya's updated OCIO defaults, improving test reliability and upgrade readiness. Commit a351c4f0258f0dc695a9b787b6ef6682f7356789, 'Recognize new default sRGB color space name'.
1 Commits
Jun 1, 2025June 2025: Focused on color-management compatibility for Autodesk/maya-usd. Updated tests to recognize both old 'sRGB' and new 'sRGB Encoded Rec.709 (sRGB)' color space names to align with Maya's updated OCIO defaults, improving test reliability and upgrade readiness. Commit a351c4f0258f0dc695a9b787b6ef6682f7356789, 'Recognize new default sRGB color space name'.
June 2025
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025: Autodesk/maya-usd delivered a feature-focused update to USD UFE Attribute Change Notification, addressing consistency and reliability in undo/redo workflows. The change unifies handling of AttributeRemoved with AttributeAdded to ensure AttributeValueChanged events are emitted consistently during undo, redo, and spec creation/undo within the UFE framework. In addition, unit tests were updated to reflect correct notification counts across undo/redo and spec lifecycles, reducing flaky behavior and increasing confidence in the UFE attribute change notification flow.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025: Autodesk/maya-usd delivered a feature-focused update to USD UFE Attribute Change Notification, addressing consistency and reliability in undo/redo workflows. The change unifies handling of AttributeRemoved with AttributeAdded to ensure AttributeValueChanged events are emitted consistently during undo, redo, and spec creation/undo within the UFE framework. In addition, unit tests were updated to reflect correct notification counts across undo/redo and spec lifecycles, reducing flaky behavior and increasing confidence in the UFE attribute change notification flow.
March 2025
8 Commits • 4 Features
Mar 1, 2025March 2025 (2025-03) highlights for Autodesk/maya-usd focused on strengthening MaterialX integration, improving metadata handling, refining test infrastructure, and stabilizing the build process. The work enables more robust cross-version Maya USD workflows, reduces maintenance risk, and lays groundwork for future features by improving test coverage and organization across the codebase.
8 Commits • 4 Features
Mar 1, 2025March 2025 (2025-03) highlights for Autodesk/maya-usd focused on strengthening MaterialX integration, improving metadata handling, refining test infrastructure, and stabilizing the build process. The work enables more robust cross-version Maya USD workflows, reduces maintenance risk, and lays groundwork for future features by improving test coverage and organization across the codebase.
March 2025
February 2025
6 Commits • 2 Features
Feb 1, 2025February 2025 — Autodesk/maya-usd: Strengthened test coverage and stability across USD integration and rendering paths. Delivered LookdevX/UFE testing enhancements, UDIM path resolution hardening in UsdFileHandler, and VP2 test reliability improvements. These changes increase regression protection, improve asset pipeline reliability, and demonstrate proficiency in USD tooling, testing, and rendering workflows.
February 2025
6 Commits • 2 Features
Feb 1, 2025February 2025 — Autodesk/maya-usd: Strengthened test coverage and stability across USD integration and rendering paths. Delivered LookdevX/UFE testing enhancements, UDIM path resolution hardening in UsdFileHandler, and VP2 test reliability improvements. These changes increase regression protection, improve asset pipeline reliability, and demonstrate proficiency in USD tooling, testing, and rendering workflows.
January 2025
1 Commits
Jan 1, 2025January 2025 monthly summary for Autodesk/maya-usd focusing on stability and revenue-impacting improvements. Implemented MaterialX library isolation in MayaUSD to prevent contamination of the HdStorm render delegate, and added USD-version-aware logic for MaterialX library creation/import. These changes reduce cross-dependency risks, improve render consistency, and simplify maintenance across USD versions. The work is captured in EMSUSD-2000: "Do not contaminate HdStorm libraries with lobe pruning" and adheres to the project’s optimization goals.
1 Commits
Jan 1, 2025January 2025 monthly summary for Autodesk/maya-usd focusing on stability and revenue-impacting improvements. Implemented MaterialX library isolation in MayaUSD to prevent contamination of the HdStorm render delegate, and added USD-version-aware logic for MaterialX library creation/import. These changes reduce cross-dependency risks, improve render consistency, and simplify maintenance across USD versions. The work is captured in EMSUSD-2000: "Do not contaminate HdStorm libraries with lobe pruning" and adheres to the project’s optimization goals.
January 2025
December 2024
8 Commits • 6 Features
Dec 1, 2024December 2024 monthly highlights for Autodesk/maya-usd focused on feature delivery, stability improvements, and cross-version robustness in MaterialX workflows, with clear business value in reliability and workflow efficiency. Key initiatives delivered across the topo graph, MaterialX libraries, and rendering test infrastructure: - Topo Grapher: Untextured Mode Support — Added a textured/untextured traversal mode via a new 'textured' parameter to computeGraph, with traversal adjustments to include/exclude node types. Includes a dedicated untextured mode test. Commit: d59cc51ca4bfd409cf0b21af5abfadc3e3948454 (MAYA-133671). - MaterialX Material Library Optimization and Namespace Robustness — Deep optimizations for MaterialX material libraries and improved handling of namespaces to reduce fragility in embedded nodes and cross-library references. Commit: cd47c0c78d62d71380aecac48ec8288922f296dc (EMSUSD-1975). - LobePruner API Clean-up and Stability — Refactored API for clarity and maintainability and strengthened node connection handling to prevent crashes during graph edits. Commits: ccf4260876747285fea183aba2c06bcb9652b3a7 and 82a113b0898da1f20fee82a67c691b9eaa9621e7. - PBR Type Checking Robustness Across MaterialX Versions — Replaced brittle magic strings with constants for PBR type checks and added compatibility for older MaterialX versions to reliably identify PBR types across libraries. Commits: 964f5c1901503ca870d8de8ab6e6cb8edba30cc4 and fe07c89a4c085ab0a47c77faf7881a746a32e426. - TopoNeutralGraph Constructors Documentation — Expanded documentation for TopoNeutralGraph constructors in ShaderGenUtil.h and render.h to clarify purpose and parameters. Commit: db374a606bfe72951a5622864285928855c35fc2. - OpenPBR Rendering Test Baseline Update — Updated VP2RenderDelegateMaterialXTest baselines to reflect visuals after changes in OpenPBR native rendering. Commit: 238f9209c5bea5ec86fb88abf799e99da00243c0. Overall impact: Increased reliability and cross-version compatibility in MaterialX workflows, reduced crash surfaces in graph editing, and improved test stability and visual baselines. These changes collectively enhance developer productivity by reducing debugging time, speeding iteration cycles, and broadening platform support for Maya USD users. Technologies/skills demonstrated: C++/ShaderGen utility work, MaterialX integration and namespace handling, graph traversal and stability hardening, API refactoring, type-checking robustness, test baseline maintenance, and rendering validation.
December 2024
8 Commits • 6 Features
Dec 1, 2024December 2024 monthly highlights for Autodesk/maya-usd focused on feature delivery, stability improvements, and cross-version robustness in MaterialX workflows, with clear business value in reliability and workflow efficiency. Key initiatives delivered across the topo graph, MaterialX libraries, and rendering test infrastructure: - Topo Grapher: Untextured Mode Support — Added a textured/untextured traversal mode via a new 'textured' parameter to computeGraph, with traversal adjustments to include/exclude node types. Includes a dedicated untextured mode test. Commit: d59cc51ca4bfd409cf0b21af5abfadc3e3948454 (MAYA-133671). - MaterialX Material Library Optimization and Namespace Robustness — Deep optimizations for MaterialX material libraries and improved handling of namespaces to reduce fragility in embedded nodes and cross-library references. Commit: cd47c0c78d62d71380aecac48ec8288922f296dc (EMSUSD-1975). - LobePruner API Clean-up and Stability — Refactored API for clarity and maintainability and strengthened node connection handling to prevent crashes during graph edits. Commits: ccf4260876747285fea183aba2c06bcb9652b3a7 and 82a113b0898da1f20fee82a67c691b9eaa9621e7. - PBR Type Checking Robustness Across MaterialX Versions — Replaced brittle magic strings with constants for PBR type checks and added compatibility for older MaterialX versions to reliably identify PBR types across libraries. Commits: 964f5c1901503ca870d8de8ab6e6cb8edba30cc4 and fe07c89a4c085ab0a47c77faf7881a746a32e426. - TopoNeutralGraph Constructors Documentation — Expanded documentation for TopoNeutralGraph constructors in ShaderGenUtil.h and render.h to clarify purpose and parameters. Commit: db374a606bfe72951a5622864285928855c35fc2. - OpenPBR Rendering Test Baseline Update — Updated VP2RenderDelegateMaterialXTest baselines to reflect visuals after changes in OpenPBR native rendering. Commit: 238f9209c5bea5ec86fb88abf799e99da00243c0. Overall impact: Increased reliability and cross-version compatibility in MaterialX workflows, reduced crash surfaces in graph editing, and improved test stability and visual baselines. These changes collectively enhance developer productivity by reducing debugging time, speeding iteration cycles, and broadening platform support for Maya USD users. Technologies/skills demonstrated: C++/ShaderGen utility work, MaterialX integration and namespace handling, graph traversal and stability hardening, API refactoring, type-checking robustness, test baseline maintenance, and rendering validation.
November 2024
10 Commits • 3 Features
Nov 1, 2024November 2024 monthly summary for Autodesk/maya-usd: Delivered shader detection enhancements, UI usability improvements, and MaterialX shader optimizations that directly boost rendering compatibility, performance, and developer productivity. Key outcomes include targeted OpenPBR shader detection and Maya-side improvements, expanded shader parameter UI defaults in the MayaUSD plugin, and a major MaterialX lobe pruning optimization with version gating. In addition, fixes to MaterialX type registration and configuration quality were completed, accompanied by code formatting improvements to maintain consistency and reduce maintenance overhead. These efforts collectively reduce rendering errors, accelerate shader evaluation, and improve the end-to-end user experience for artists and developers. Key outcomes by area: - OpenPBR shader support detection in MayaUSD: Introduced MAYA_HAS_OPENPBR_SURFACE_SHADER CMake flag with enhanced Maya-side detection to improve compatibility and rendering. - Shader parameter UI defaults in Maya USD plugin: Expanded shader parameter sections by default to improve visibility and UX. - MaterialX lobe pruning optimization: Implemented lobe pruning to skip unnecessary shader evaluations, with version gating to ensure compatibility and a refactor for maintainability. - MaterialX BSDF type string compatibility: Updated node definitions to explicitly use BSDF type strings for MaterialX 1.38.5 compatibility, reducing shader interpretation issues. - Code quality and formatting improvements: Applied clang-format adjustments to code and tests to improve readability and align with standards. Business impact: - Improved rendering compatibility and performance, leading to fewer shader-related issues and faster preview/render cycles. - More maintainable codebase and test stability, reducing QA effort and enabling faster iteration for shader workflows. - Clearer UX cues and discoverability for shader parameters, accelerating artist onboarding and productivity.
10 Commits • 3 Features
Nov 1, 2024November 2024 monthly summary for Autodesk/maya-usd: Delivered shader detection enhancements, UI usability improvements, and MaterialX shader optimizations that directly boost rendering compatibility, performance, and developer productivity. Key outcomes include targeted OpenPBR shader detection and Maya-side improvements, expanded shader parameter UI defaults in the MayaUSD plugin, and a major MaterialX lobe pruning optimization with version gating. In addition, fixes to MaterialX type registration and configuration quality were completed, accompanied by code formatting improvements to maintain consistency and reduce maintenance overhead. These efforts collectively reduce rendering errors, accelerate shader evaluation, and improve the end-to-end user experience for artists and developers. Key outcomes by area: - OpenPBR shader support detection in MayaUSD: Introduced MAYA_HAS_OPENPBR_SURFACE_SHADER CMake flag with enhanced Maya-side detection to improve compatibility and rendering. - Shader parameter UI defaults in Maya USD plugin: Expanded shader parameter sections by default to improve visibility and UX. - MaterialX lobe pruning optimization: Implemented lobe pruning to skip unnecessary shader evaluations, with version gating to ensure compatibility and a refactor for maintainability. - MaterialX BSDF type string compatibility: Updated node definitions to explicitly use BSDF type strings for MaterialX 1.38.5 compatibility, reducing shader interpretation issues. - Code quality and formatting improvements: Applied clang-format adjustments to code and tests to improve readability and align with standards. Business impact: - Improved rendering compatibility and performance, leading to fewer shader-related issues and faster preview/render cycles. - More maintainable codebase and test stability, reducing QA effort and enabling faster iteration for shader workflows. - Clearer UX cues and discoverability for shader parameters, accelerating artist onboarding and productivity.
November 2024
July 2024
1 Commits • 1 Features
Jul 1, 2024Month: 2024-07 — Autodesk/maya-usd delivered OpenPBR MaterialX Import/Export Support in Maya, enabling import/export of OpenPBR materials to MaterialX and strengthening cross-toolchain interoperability between Maya and USD workflows. Commit 4fb26bd65897f2610f30ab4f02804b81be62166b (MAYA-133932): Implemented import/export to MaterialX. No major bugs reported this month for this repository. Overall impact: streamlined material authoring, reduced manual conversion steps, and improved rendering pipeline reliability. Technologies/skills demonstrated: MaterialX integration, Maya/USD pipeline collaboration, version-controlled feature delivery, and cross-team collaboration within an open-source project.
July 2024
1 Commits • 1 Features
Jul 1, 2024Month: 2024-07 — Autodesk/maya-usd delivered OpenPBR MaterialX Import/Export Support in Maya, enabling import/export of OpenPBR materials to MaterialX and strengthening cross-toolchain interoperability between Maya and USD workflows. Commit 4fb26bd65897f2610f30ab4f02804b81be62166b (MAYA-133932): Implemented import/export to MaterialX. No major bugs reported this month for this repository. Overall impact: streamlined material authoring, reduced manual conversion steps, and improved rendering pipeline reliability. Technologies/skills demonstrated: MaterialX integration, Maya/USD pipeline collaboration, version-controlled feature delivery, and cross-team collaboration within an open-source project.
Activity
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Quality Metrics
Correctness91.6%
Maintainability89.2%
Architecture88.6%
Performance83.0%
AI Usage24.0%
Skills & Technologies
Programming Languages
C++CMakeMAMELPythonUSDUsdaXML
Technical Skills
API IntegrationArnoldAttribute HandlingBuild SystemBuild System ConfigurationBuild SystemsC++C++ DevelopmentC++ developmentCMakeCode FormattingCode RefactoringColor ManagementDocumentationFile Handling
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline