[Webkit-unassigned] [Bug 227287] New: ANGLE Metal does not support GLSL shadow samplers on macOS non-AS

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=227287

            Bug ID: 227287
           Summary: ANGLE Metal does not support GLSL shadow samplers on
                    macOS non-AS
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Mac (Intel)
                OS: macOS 11
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: ANGLE
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kkinnunen at apple.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com
        Depends on: 226975
            Blocks: 222812

To support GLSL shadow samplers correctly on new macOS versions:
 - implement the fallback correctly
 - implement the gpu check correctly
To support GLSL shadow samplers correctly on older macOS versions 
 - implement the Metal version check correctly

See bug 226975 for discussion.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=222812
[Bug 222812] WebGL2 conformance test failures on Mac/iOS
https://bugs.webkit.org/show_bug.cgi?id=226975
[Bug 226975] iPhone 6S - iOS 15.0 - unable to retrieve WebGL2 context
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