[Webkit-unassigned] [Bug 88234] New: Don't mark main frame layer opaque if the frame view is transparent

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Jun 4 08:06:47 PDT 2012


           Summary: Don't mark main frame layer opaque if the frame view
                    is transparent
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit BlackBerry
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: anilsson at rim.com
                CC: tonikitoo at webkit.org

In the BlackBerry port, we sometimes use an AC layer to draw the contents of the "root" layer, i.e. the output of the main frame's FrameView::drawContents().

We also use the GraphicsLayer::contentsOpaque() (and other factors) to figure out whether to enable GL blending when compositing that layer.

I found some code that sets the main frame renderview's layer opaque (unconditionally) which looks like it could break things when the main frame's FrameView has a transparent background color, because it will cause us to turn off blending for that layer.

This should be seen in context of bug #88233.

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