Float16 on TypedArrays, DataView, Math.hfround

moriken · April 11, 2020, 3:40pm

Any progress on this Stage 1 proposal?

At least, IMHO, DateView#{get, set}Float16 should go ahead.

See also:
https://esdiscuss.org/topic/float16array

tc39/notes/blob/c0d3b64c613eed1458ad5db33894ad09e28c0a86/meetings/2017-05/may-23.md#16ig-float16-on-typedarrays-dataview-mathhfround-for-stage-1

# May 23, 2017 Meeting Notes
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Allen Wirfs-Brock (AWB), Waldemar Horwat (WH), Brian Terlson (BT), Michael Ficarra (MF), Adam Klein (AK), Chip Morningstar (CM), Dave Herman (DH),  Kent C. Dodds (KCD), Kevin Gibbons (KG), Tim Disney (TD), Daniel Ehrenberg (DE), Shu-yu Guo (SYG), Jeff Morrison (JM), James Snell (JSL), Keith Miller (KM), Myles Borins (MBS), Rick Waldron (RW), Mariko Kosaka (MKA), Stephen Murphy (SMY), Rob Palmer (RPR), Andrew Paprocki (API), Philippa Gardner (PGR), Sam Goto (SGO), Mark S. Miller (MM), Nathan Hammond (NHD), Masud Rahman (MRN), Henry Zhu (HZU), Sebastian Markbåge (SM), Joe Mordetsky (JMY), Franziska Hinkelmann (FHN), Caridy Patiño (CP), Myles Borins (MBS), Ron Buckton (RBN), Ashley Williams (AWS), Domenic Denicola (DD), Patrick Soquet (PST), Peter Hoddie (PHE), Leo Balter (LBR), Ben Newman (BN), Jafar Husain (JH), Yehuda Katz (YK), Sarah D'Onofrio (SDO), Kirill Cherkoshin (KCN), Andres Suarez (ASZ), Diego Ferreiro Val (DFV), Tzvetan Mikov (TMV)

Remote:
Jamund Ferguson (JXF), Bradley Farias (BFS)

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## Welcome

(request slides?)

AWB: (introduction, explanation of TC39 and Ecma)



## 6. Agenda Adoption

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moriken · April 11, 2020, 4:09pm

Maybe make Float16Array optional for WebGPU just like SharedArrayBuffer?

FYI:

Leo Balter (2 years ago)
I've been trying to get some traction for the feature with implementors but it's being hard to get everyone positive about this being a native implementation rather than a non-native custom API.

https://esdiscuss.org/topic/float16array#content-18

moriken · December 5, 2022, 2:24pm

Float16Array is required in Canvas Floating Point Color Values.

github.com/w3c/ColorWeb-CG

Proceed with `Float16Array`

opened 02:15AM - 18 Nov 22 UTC

petamoriken

`Float16Array` is proposed in TC39 at [Stage 1](https://github.com/tc39/proposal…s/blob/main/stage-1-proposals.md#:~:text=Float16). Can we move in the direction of advancing that? --- > ### Choice of `Float32Array` for `ImageData` > > There does not exist a `Float16Array` type, and so it is not an option. > The only other floating-point type, `Float64Array`, is of unnecessarily high precision. https://github.com/w3c/ColorWeb-CG/blob/14bffcb85327b011026def4f7ebf9b88e724afad/canvas_float.md#choice-of-float32array-for-imagedata

moriken · December 27, 2022, 2:31am

The ColorWeb CG therefore suggests:

Moving ahead with
ColorWeb-CG/canvas_float.md at main · w3c/ColorWeb-CG · GitHub in its current form, with unorm8 and float32 as options for readback.

In parallel, working on adding Float16Array to ECMAScript, and prototyping it in browsers.

Specifying a "float16" enum in ImageDataColorType once implementation experience has been achieved with Float16Array. Applications can feature-detect its support in browsers by catching exceptions raised by getImageData or createImageData.

https://lists.w3.org/Archives/Public/public-colorweb/2022Dec/0014.html