Platform integration work

[bakkot]

This needs integration with a couple of bits of the web platform:

• Web IDL's ArrayBufferView, BufferRelatedType, etc need to be updated to list Float16Array done in Add Float16Array whatwg/webidl#1398
• WebGL's texImage2D needs to be updated so Float16Array is accepted as a source for HALF_FLOAT - issue

As far as I am aware these are the only places which need updating currently (updating Web IDL will flow to a number of places, including WebGPU). WebNN and float-backed canvases are in progress features, and I've informed people working on both about Float16Array.

[bathos]

I opened an issue for this on the Web IDL repo, whatwg/webidl#1310. I didn’t see this issue first, but it probably doesn’t hurt to track it there too.

[petamoriken]

I opended an issue for DOMMatrix: w3c/fxtf-drafts#546

[bakkot]

Opened whatwg/webidl#1398 adding Float16Array to WebIDL.

Edit: also w3c/webidl2.js#777 and web-platform-tests/wpt#45483.

[annevk]

See whatwg/html#8708 (comment) for the latest on 2D canvas.

[bakkot]

Closing as the proposal has landed. Some of the linked issues are still open, but I'm not aware of any other places which need to be updated which are not linked in this thread. If I've missed any please open issues in the appropriate place and ping me (or just ping me on matrix and I'll do it).