[Webkit-unassigned] [Bug 251506] New: WebGL in <iframe> is very slow with Metal

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Feb 1 04:37:53 PST 2023


            Bug ID: 251506
           Summary: WebGL in <iframe> is very slow with Metal
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: iOS 16
            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

WebGL in <iframe> is very slow with Metal backend enabled.

- Disabling Metal backend solves the problem.

- I've tried limiting resolution to the minimum 160x90, but it does not help.

- I've observed massive battery drain, so it is probably not just Safari is throttling the RAF inside iframe.

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