This bug usually occurs after a few times of opening different USD files.

In yet another episode of move fast and break things. The linker phase needs to be resolved to include the remaining missing symbols to restore the build and continue to ship an intermediary release until we officially hit the 1.50 launch version.

The 1.50 release is out of scope for this ticket and will be chopped up into single ticket issues throughout this board.

Update 10/4/2022 - Down to just some ui_xxx symbols now.

Adding a shader build system into the Kraken build, tooling out cross platform (& cross language - Python & Swift & C/C++) support to build tools, shaders, and graphics APIs for Kraken's suite of software animation tools. With the ability to create language bindings in either direction.

Kraken is now officially agnostic of Python, Swift, and C/C++. Allowing all three languages to sit comfortably within the single DCC runtime, consuming or providing the build tool, graphics engine, or other graphics API in question.

Yes, this also means Pixar USD can be imported as a Swift package via:

import Pixar

let stage = Usd.Stage.CreateNew(title: "HelloWorld.usda")
let xformPrim = UsdGeom.Xform.Define(stage: stage, path: "/hello")
let spherePrim = UsdGeom.Sphere.Define(stage: stage, path: "/hello/world")

if let stagev1 = stage.Get(with: .rootLayer) {
  stagev1.Save()
}

...

/* also... */

let project = Usd.Stage.CreateNew(title: "KrakenProject.usd")
let window = UsdKraken.Window.Define(stage: project, path: "/DCC/UI/Window")

window.size.Set(x: 1920, y: 1080)

let 3dview = UsdKraken.SpaceView3D.Define(stage: project, path: "/DCC/UI/Window/Viewport")

3dview.engine.Set(renderer: "Arnold")


let default_cube = UsdGeom.Cube.Define(stage: project, path: "/DCC/UI/Window/Viewport/DefaultCube")
/* as you can see, it's quite powerful. */