[Webkit-unassigned] [Bug 57388] New: Need a way to specify that a ShareableBitmap has no alpha channel

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=57388

           Summary: Need a way to specify that a ShareableBitmap has no
                    alpha channel
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: aroben at apple.com
                CC: andersca at apple.com
            Blocks: 45567


ShareableBitmap currently always honors the alpha channel of its underlying data. This doesn't work well for use with APIs like GDI, which don't support alpha channels. (See bug 45567 comment 17 for one specific bug that this causes.)

We should have a way of specifying that a particular ShareableBitmap doesn't have an alpha channel.

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