[Webkit-unassigned] [Bug 233817] ETC1S compressed textures don't have alpha channel information

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=233817

--- Comment #3 from Kenneth Russell <kbr at google.com> ---
(oops, didn't mean to publish that incomplete comment)

Could you please explain what compressed texture formats seem to be missing support in Safari? To the best of my recollection, during the ANGLE port and WebGL 2.0 upgrade, we exposed all texture formats.

On what hardware is this happening? What is the destination compressed texture format used during transcoding, and what's the desired destination format?

On macOS 11.6.1 (I haven't taken the macOS 12 upgrade yet), Chrome, Safari, and Safari Technology Preview render:

https://glitch.com/edit/#!/sponge-lemon-vulture

identically. There's no issue with the transparency of the hexagonal geometry.

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