Behdad Esfahbod

> Is it time to get the modern WebP and AVIF formats added to the jpg, png, tiff formats allowed in OpenType sbix? Yes. > Also note that [Apple’s sbix...

> Is jpeg xl already allowed under the jpg graphic type in sbix? I don't know of any implementation that accepts jpg, so hard to answer. :)

> _Should_ jpeg xl be allowed under the jpg graphic type? :) To me, yes. Same way that another standard sanctioning, say, the Open Font Format for a particular use...

> https://caniuse.com/jpegxl makes support look a touch gloomy so maybe not quite yet. Given that it was only finalized in Dec 2020, looks like it is rolling out in browsers...

> The biggest catch I'm currently aware of with bitmaps is what happens when compositing a bitmap that isn't sRGB But that's already an open question in CBDT/CBLC and sbix...

> Reminder for self: per discussion with Raph and Chad we might want a new paint to support blending many layers with alpha. Hopefully named something nicer than PaintColorLayersWithBlendAndAlpha. Or...

> First, each `PaintComposite` requires in the general case two temporary image pixels to be allocated and two blends. The first gives a clean canvas in which to paint backdrop,...

> and the result is composited with Porter-Duff "over" to what I'll be calling the "underlayer", ie the paint nodes that have preceded this. That's yet another node. That's what...

> There's one type of node that is a a "list of nodes over eachover". That's what you are referring to as underlayer here. But that's not necessarily always the...

Thanks @nigeltao. That's very interesting. Unfortunate that we are almost ready to ship COLRv1; hopefully in the future, when iconvg lands widely, we can embrace the existing `sbix` table to...