Meeting notes

Participants

• @repi
• @khyperia
• @VZout
• @Jasper-Bekkers
• @maxded
• @arirawr
• @termhn

Minutes

Status update

Codegen - @khyperia

• Getting really close

• Last issues left is dealing with linking unsupported functions, working with @Jasper-Bekkers

• Moving ahead to start design how we make an entry point and represent address spaces (#23)

• Done a bunch of work to improve for onboarding, README, code comments (#28)

• No binding stuff implemented yet and no GPU specific stuff

  • Biggest question is design how it should look like
  • Doing first easy implementation is good
  • Expose intrinsics?
  • May be easier to do arguments to pass in data than global statics

• What to do with virtual functions?

  • Could probably support but will be very slow
  • Likely not in the first prototype, no need for our shaders

• Do we want to run as much Rust code as possible? Or just some shaders

  • Start with just shaders, not our main goal to generally run any Rust code
  • But will be able to incrementally add more and more Rust support
  • @termhn & @repi: you want to write GPU shaders for GPU arch anyway

• Once a first shader is up we'll be able to build and work on higher-level ergonomic shaders and Rust features

• First hello world shader will be a compute shader

  • GL compute or Kernel type?
  • Ark doesn't have any compute shaders yet :)
  • But can be tested separately or add a quick dummy pass in it

Structurizer (#24) - @VZout

• Going quite slowly
• Some help from wasm people that are familiar with the algorithm could be useful
• But otherwise just needs to focus in on it deeply and solve it
• Move repo fork from personal account to EmbarkStudios org - @VZout
• Will after this task move back to focus on Ark core work, not Rust GPU tasks

@termhn joining the project!

• Yay!

• Good first issues?

  • First: Convert over Ark shaders to pseudo-Rust (#4)
    • @Jasper-Bekkers sketched/converted a first one (#14), drove a lot of good discussions and issues. Let's convert most Ark shaders!
    • @termhn: Yes most interested in this!
  • Later: Design our Rust "std" graphics library
    • Math, functions, swizzles, and low-level intrinsics for our shaders
    • @repi: Good follow up once we have some initial shaders that drive concrete needs
    • @termhn: yes, have experience and interest in this!
  • @khyperia: may have some smaller starter issues, but a lot of code churn right now so difficult
  • @Jasper-Bekkers: Linker stuffs (#27)
    • Convert over test cases?
    • Good way to get into some codegen

• Decided to start with the higher-level Rust shaders work, which is not blocked by the codegen work

Other topics

• How to expose vector types in Rust?

  • Go with the attribute system?
  • @khyperia has some plans and ideas (#34)

• Will move meeting from 16:00 CET to 17:00 to make it easier to for @termhn to join

  • Aim for 30 min meetings
  • Can have smaller separate deeper tech syncs if needed, and more discussion in issues & chat as well

from rust-gpu.