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Minutes from 132-nd OpenVDB TSC meeting, May 10th, 2022.
Attendees: Jeff L., Nick A, Dan B., Ken M., Andre P.
Additional Attendees: Sebastian Gaida, J. T. Nelson (Blender)
Regrets: Rich J.
Agenda:
- Confirm quorum
- Secretary
- Forum
- Multires Proposal
- Issue 1374: MIME registration
- Website updates
- OpenVDB Course
- Merging Master into vdb_tool
- Issue 1162: Quantization in PNanoVDB
- Version 10
- Release Manager
- Next Meeting
- Confirm quorum
Quorum is present.
- Secretary
Secretary is Jeff Lait.
- Forum
No issues to discuss.
- Multires Proposal
They have version internally named VTT, with a NanoVTT component. NanoVTT is an any-device multi-res version.
Proposing to send us a NanoVTT implementation. Only dependency is nanovdb (likely for conversion).
If we are happy with this repo, then they will provide VTT. Early version will still have dependencies. So there will be a trickle-out of VTT. Try to avoid a lot of development only to have us reject them.
We need to find out how much we can share the NanoVTT. Can we share it with our own rendering teams, etc, outside of the TSC?
- Issue 1374: MIME registration
Blocked on determining which section we are. We are likely the model area. This also does include the magic numbers of the file format.
- Website updates
Nick has pushed new updates
- OpenVDB Course
We have permission to embed the course video.
- Merging Master into vdb_tool
Still ongoing. Dan still reviewing.
- Issue 1162: Quantization in PNanoVDB
Ken needs to pass this on to the PNanoVDB author. The author will directly connect Sebastian.
- Version 10
Frustum rasterizer should make it in. This includes the SOP. Other rasterizer sop was taking out. We keep wanting a one-true rasterization sop, but that is not showing up.
This would have upkeep issues. It is a mess when people are used to SOPs that disappear or are renamed. But, SOPs could be seen as the API. So if these exist as vdb_tools as different commands, they likely should also exist as different SOPs. Even if these are not final artist-friendly layer, they form the sort of API layer underneath.
It becomes tricky to do to get the stuff into Houdini. We need more documentation on C++ rather than more SOPs. VDB is a C++ API. Maybe we can add the SOP but with experimental_ prefix and not installed to the library by default?
Dan's PR is ready, but includes the SOP. Not 100% happy with the SOP, but it has been used. How to specify the VDB is tough. Also can use a camera to drive motion blur smear, but this confuses with the camera for the frustum...
What are our goals? Frustum rasterization should be its own sop, and surfacing should be its own sop. But inbetween there is particle rasterization on AABB grids. So perhaps we focus on the two major ones.
Nick will open a PR with the SOP, for Jeff to cherry pick and re-submit, taking over control of the PR. Dan's SOP can be VDB Rasterize Frustum
Plan is the tools from Dan and Nick are in for 9.1. SOPs will be in for 10, possilbly experimental in 9.1. vdb_tool is 10. Mathematica will be 10.
- Release Manager
Decide next week.
- Next Meeting
Next meeting is on May 17th, 2022. 1pm-2pm EDT (GMT-4).