[Webkit-unassigned] [Bug 227117] New: Type Error: Argument 2 (data) to WEBGLRenderingContext.bufferdata must be an instance of ArrayBufferView

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=227117

            Bug ID: 227117
           Summary: Type Error: Argument 2 (data) to
                    WEBGLRenderingContext.bufferdata must be an instance
                    of ArrayBufferView
           Product: WebKit
           Version: Safari 14
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mehdisabwat at gmail.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

Created attachment 431653

  --> https://bugs.webkit.org/attachment.cgi?id=431653&action=review

screenshot of the crash

Hi,

I think I found a bug in safari 14.1, that is related to webkit.

Steps to reproduce:

1. https://faac72d6-27e4-4421-8928-bdab305868ef.pub.instances.scw.cloud:8000/demo/build-test-no-video/vlc.html

2. open the terminal and run (on safari 14.1) __XPC_JSC_useWebAssemblyThreading=1 __XPC_JSC_useSharedArrayBuffer=1 __XPC_JSC_useWebAssemblyReferences=1 /Applications/Safari.app/Contents/MacOS/Safari

3. activate webgl 2.0 in Develop->Experimental Features

4. Click on the play icon (or on the canvas if the page finished loading)

This is working fine in other browsers (chrome 91, firefox 89) on the main desktop OSes (Macos, linux, windows)

At your disposal for more information/tests if needed.

Thank you

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