Bug 258104

Summary:	[ANGLE] Support BGRA_SRBGB_ANGLE for framebuffer blits
Product:	WebKit	Reporter:	Dan Glastonbury <djg>
Component:	ANGLE	Assignee:	Dan Glastonbury <djg>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	dino, kbr, kkinnunen, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Dan Glastonbury 2023-06-14 18:38:29 PDT

For WebGL content, WebKit needs to perform MSAA resolve on the WebGL
buffer before compositing via a blit. On Apple platforms, this draw
buffer is usually in BGRA8_SRGB_ANGLEX as it is the native format for
the windowing system's compositor, so SRGB8_ALPHA8 needs coercion for
WebGL to work with multisample sRGB content.

Comment 1 Radar WebKit Bug Importer 2023-06-14 18:40:11 PDT

<rdar://problem/110811770>

Comment 2 Dan Glastonbury 2023-06-14 18:46:07 PDT

Pull request: https://github.com/WebKit/WebKit/pull/14984

Comment 3 EWS 2023-06-15 17:38:25 PDT

Committed 265219@main (e05b9c978c96): <https://commits.webkit.org/265219@main>

Reviewed commits have been landed. Closing PR #14984 and removing active labels.