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    <body><span class="vcard"><a class="email" href="mailto:thorton@apple.com" title="Tim Horton <thorton@apple.com>"> <span class="fn">Tim Horton</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Select proper IOSurface backing format for configuration"
   href="https://bugs.webkit.org/show_bug.cgi?id=224948">bug 224948</a>
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Select proper IOSurface backing format for configuration"
   href="https://bugs.webkit.org/show_bug.cgi?id=224948#c3">Comment # 3</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Select proper IOSurface backing format for configuration"
   href="https://bugs.webkit.org/show_bug.cgi?id=224948">bug 224948</a>
              from <span class="vcard"><a class="email" href="mailto:thorton@apple.com" title="Tim Horton <thorton@apple.com>"> <span class="fn">Tim Horton</span></a>
</span></b>
        <pre>Comment on <span class=""><a href="attachment.cgi?id=426850&action=diff" name="attach_426850" title="Patch">attachment 426850</a> <a href="attachment.cgi?id=426850&action=edit" title="Patch">[details]</a></span>
Patch

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=426850&action=review">https://bugs.webkit.org/attachment.cgi?id=426850&action=review</a>

<span class="quote">> Source/ThirdParty/ANGLE/ChangeLog:3
> +        [Metal ANGLE] Select proper IOSurface backing format for WebGL environment</span >

Something crazy happened with the indentation here.

<span class="quote">> Source/ThirdParty/ANGLE/ChangeLog:5
> +</span >

rdar://?

<span class="quote">> Source/ThirdParty/ANGLE/ChangeLog:7
> +        Depending on the architecture, WebCore expects different 
> +        IOSurface texture targets for the main buffer. When running catalyst on </span >

Is it possible for the WebCore code that has this expectation, and the ANGLE code that is expected to behave this way, to both predicate their behavior on a single bit? (so that they don't have to be kept in sync?). I guess that might be tricky since ANGLE can't use our feature macros.

<span class="quote">> Source/ThirdParty/ANGLE/src/libANGLE/renderer/metal/DisplayMtl.mm:440
> +#if TARGET_OS_MAC || TARGET_OS_MACCATALYST</span >

Does not actually seem like you need this function on macOS proper.</pre>
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