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Attendees

  • Alex Fuller
  • Brecht Van Lommel (Blender)
  • Christoph Neuhauser (Intel)
  • Michael Jones (Apple)
  • Nikita Sirgienko (Intel)
  • Patrick Mours (NVIDIA)
  • Sebastian Herholz (Blender)
  • Sergey Sharybin (Blender)
  • Thomas Dinges (Blender)
  • Xavier Hallade (Intel)
  • Weizhen Huang (Blender)
  • Ben D

Notes

  • Blender 5.1
    • 5.1.1 is out!
    • OpenData will be updated soon
  • Ongoing projects
    • Texture Caching
      • Cycles: Texture cache eviction and widen ray differentials #157244
        • Needs review
    • OpenPBR
      • Working on implementing OpenPBR for Cycles’ SVM backend #156394
        • clean room approach (according the spec)
        • visual differences to the OSL version generated by MaterialX
      • Initial support for EEVEE:
        • for metallic, base, specular components
      • Thin film: Weizhen is implmenting missing fearuers in the Principled BSDF node
        • Negative values for anisotropy
      • Working on the test suit, to cross-check with different renderers
  • Other
    • WIP: Shader: Implement attribute access in Raycast node #157344
    • Patrick:
      • Waiting for someone from Blender to review
      • Jittered sampling is getting close to landing #153544
    • Alex:
      • Have some PRs against the standalone repository
      • Tagging the standalone repository would help
      • Cycles stadalone needs to have AMD AoT kernels arch update (currnetly missing gfx1200 and gfx1201)
    • Nikita:
      • WIP: Add HWPGO and LTO support to blender build system #156767
        • It is on Sergey’s list to review, but if someone else have time to review that’d be great as well
    • Sahar:
      • Question: Are there plans to update to HIP SDK 7 for Blender 5.2
        • Currently there were no plans, but seems it will help with the LTS nature of the Blender 5.2
        • We’ll do some tests internally, install SDK, etc
        • Sahar will help with links to exact SDKs etc
        • OIDN would need ot be recompiled
      • Sahar is working on the BVH type seelction to help memory usage
    • Michael:
      • The GPU side scheduling PR still awaits review from Blender side
    • Ben:
      • Working on the Scene Time node
        • WIP: Shader Scene Time node #156850

Practical Info

This is a bi-weekly video chat meeting for planning and discussion of Blender rendering development. Any contributor (developer, UI/UX designer, writer, …) working on rendering in Blender is welcome to join and add proposed items to the agenda.

For users and other interested parties, we ask to read the meeting notes instead so that the meeting can remain focused.

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Do you have any new hypotheses regarding the performance fluctuation on Metal ( Benchmarks )?

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There are a few ideas. Might be thermal related, or something else that makes the system to bounce between power states. We are looking into it, although it is not the highest priority to spend resources on atm, so might take a bit.

2 Likes