Bug 256088

Summary:	Some Unity shaders slower on Metal than on OpenGL
Product:	WebKit	Reporter:	Kimmo Kinnunen <kkinnunen>
Component:	ANGLE	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	dino, kbr, kkinnunen, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Local Build
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:
Bug Blocks:	255987

Description Kimmo Kinnunen 2023-04-28 05:07:19 PDT

See for example on bug 255987

On OpenGL, fullscreen Studio display 5120x2880 runs full rate, 60 fps.

On Metal, fullscreen Studio display 5120x2880 runs 32 fps.

Resizing the app to smaller window increases the frame rate.

Disabling the shaders in Web Inspector increases the frame rate.

Comment 1 Radar WebKit Bug Importer 2023-05-05 05:08:17 PDT

<rdar://problem/108943724>