[Webkit-unassigned] [Bug 54224] New: toDataURL() fails if skia device is backed by GPU

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=54224

           Summary: toDataURL() fails if skia device is backed by GPU
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: reed at google.com
                CC: mdelaney at apple.com


The current impl assumes it can read the address returned by the device's bitmap, and had it to the image encoders. The fix is to check if we need to call device->readPixels() first, which will always succeed, even if the device is backed by some other means than a CPU bitmap (e.g. opengl fbo)

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