[Webkit-unassigned] [Bug 237533] New: iOS/iPad 15.3.1 slow primitive restart

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=237533

            Bug ID: 237533
           Summary: iOS/iPad 15.3.1 slow primitive restart
           Product: WebKit
           Version: Safari 15
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: msokalski at novomatic-tech.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

On iOS/iPad 15.3.1 gl.drawElements with gl.UNSIGNED_INT index buffer containing ~0 to restart gl.TRIANGLE_FAN geometry is incredibly slow.
I haven't checked UNSIGNED_SHORT, UNSIGNED_BYTE types but switching to gl.TRIANGLES without primitive restarts works OK.

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