Bug 234220

Summary:	Metal backend fails (Shadershowdown)
Product:	WebKit	Reporter:	markus
Component:	WebGL	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	dino, kbr, kkinnunen
Priority:	P2
Version:	Safari 15
Hardware:	Unspecified
OS:	Unspecified

Description markus 2021-12-12 16:40:15 PST

shader: https://www.shadertoy.com/view/flcSRB

Comment 1 Kimmo Kinnunen 2021-12-13 00:04:12 PST

Thanks for the report. This has been fixed and ships in iOS15.2 and some upcoming macOS release.
Most likely this is bug 230472 or bug 226660.
Resolving as bug 226660 with a guess that the MSL shader fails due to name conflict with GLSL shader function name "rand".

*** This bug has been marked as a duplicate of bug 226660 ***