[Webkit-unassigned] [Bug 104195] New: [WK2][EFL] Gardening. Rebase fast/block/basic/020.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=104195

           Summary: [WK2][EFL] Gardening. Rebase fast/block/basic/020.html
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit EFL
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ktf.kim at samsung.com
                CC: demarchi at webkit.org


The layer for "visibility:hidden; position: absolute;" object should be shown in RenderLayer Tree when USE(ACCELERATED_COMPOSITING).

It's because the HiddenLayers are included in zOrderList when CompositingMode is on.

void RenderLayer::rebuildZOrderLists()
{
#if USE(ACCELERATED_COMPOSITING)
    bool includeHiddenLayers = compositor()->inCompositingMode();  // TRUE or FALSE by RenderLayerCompositor::m_compositing
#else
    bool includeHiddenLayers = false; // Always FALSE -> other ports' case
#endif
    for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
        if (!m_reflection || reflectionLayer() != child)
            child->collectLayers(includeHiddenLayers, m_posZOrderList, m_negZOrderList);

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