利用者:Aligorith/GSoC2013 Depsgraph

Dependency Graph and Evaluation Engine Refactor

Joshua Leung (aligorith)

Project Description

For many years, Blender’s dependency graph and evaluation engine has been long overdue for refactoring. Despite various key subsystems in Blender having already been refactored to become more flexible and powerful in the hands of skilled artists, it has become increasingly clear that artists are currently unable to fully harness the full potential capabilities of these tools due to limitations imposed by the current dependency graph engine. This project aims to investigate and resolve the various design issues involved in creating a new future-proof dependency graph system, and will result in an initial implementation of relevant core components.

GSoC13 Admin

• Proposal
• Timeline
• Status/Todo
• Results

• Branch: branches/soc-2013-depsgraph_eval <--- Currently unused

• WIP Core: https://github.com/Aligorith/DepsgraphRefactor

GSoC13 Weekly Reports

• Week 1 (21 June)
• Week 2 (28 June)
• Week 3 (5 July)
• Week 4 (12 July)
• Week 5 (21 July)
• Week 6 (26 July)
• Week 7 (2 August)
• Week 8 (9 August)
• Week 9 (16 August)
• Week 10 (23 August)

• Weeks 11, 12, 13 (13 September)

WIP Design Ramblings

NOTE: these were originally posted on my blog (aligorith.blogspot.com) but are copied here for posterity. Some copy-n-paste formatting errors may be present.

1. Literature Review - Blog, Wiki
2. The Granularity Problem - Blog, Wiki
3. What's in a Node? - Blog, Wiki
4. ID Groups - Blog, Wiki
5. Optional Branches Mediated with Runtime Switches - Blog, Wiki

1. Animato Integration - Blog, Wiki
2. RNA Updates - [? Blog], Wiki
3. RigidBody Sim Integration - [? Blog], Wiki
4. Sequencer/Scene Strips Integration - [? Blog], Wiki
5. Basic Scheduling (Non-Multithreaded) - [? Blog], Wiki
6. Filtering and Querying API - [? Blog], Wiki

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1. Development Updates + Design 2 ("Components") Blog, PDF

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Graph Building for Various Components:

1. Transform Component - Blog
2. Pose Component - Blog

Other assorted notes:

• Laundry List of (Problematic) Cases that need to be considered

Design Documents

• ファイル:Despgraph-DesignOverview-01.pdf
• ファイル:DepsgraphRefactor-DesignOverview-02.pdf

• ファイル:Depsgraph-DesignOverview03.pdf

Important Links

Discussions about depsgraph issues and/or potential solutions:

• Ton:
  • Proposed breakdown and key issues to be solved
• Brecht:
  • User-level overview (Depsgraphs, and the current limitations)
  • Thoughts on Depsgraph Implementation/Design Issues
• Me:
  • Common problems and use cases (where those arise)

Documents discussing design of current system:

• Release Logs for current Depsgraph (from 2005/6 - 2.40 release)
• JLucPierre's Dependency Graph Design Docs (from 2005 - pre 2.40)

Related GSoC Pages:

• Sergey's GSoC (Threaded Depsgraph Issues) Main Page
• Viewport Updates

Development Todo's List:

• Dependency Graph Bugs/Todo's