RESOLVED DUPLICATE of bug 133065122784
Missing content when compositing solid color combined with "paints into ancestor" layers 
https://bugs.webkit.org/show_bug.cgi?id=122784
Summary Missing content when compositing solid color combined with "paints into ances...
Simon Fraser (smfr)
Reported 2013-10-14 15:50:21 PDT
Created attachment 214199 [details] Testcase The testcase shows a bug (missing background image on the middle div) which I think happens because when we determine that an element can use the solid color optimization, we omit to check to see if any descendants render into it.
Attachments
Testcase (1.04 KB, text/html)
2013-10-14 15:50 PDT, Simon Fraser (smfr) 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2013-10-14 15:50:34 PDT
<rdar://problem/15224559>
Simon Fraser (smfr)
Comment 2 2013-10-14 16:25:35 PDT
A couple of things here: 1. I think this boolean logic in RenderLayerCompositor::requiresOwnBackingStore() is wrong: if (compositingAncestorLayer && (!compositingAncestorLayer->backing()->graphicsLayer()->drawsContent() || compositingAncestorLayer->backing()->paintsIntoWindow() || compositingAncestorLayer->backing()->paintsIntoCompositedAncestor())) return true; but fixing that would prevent having nested "paintsIntoCompositedAncestor()" layers. 2. isSimpleContainerCompositingLayer() gives the wrong answer if descendant compositing layers are "paints into ancestor" layers.
Simon Fraser (smfr)
Comment 3 2014-12-11 15:32:13 PST
Fixed via bug 133065. *** This bug has been marked as a duplicate of bug 133065 ***
Note You need to log in before you can comment on or make changes to this bug.