Under-invalidation in layout test |
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Issue descriptioncompositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner-late-composite.html Debug output: [1:1:1227/141558.627131:3128447410851:ERROR:GraphicsLayer.cpp(1321)] "LayoutIFrame (relative positioned) IFRAME id='nestingFrame'" Uninvalidated old/new pixels mismatch at 438,2 old:ff808080 new:0 [1:1:1227/141558.627543:3128447411153:ERROR:GraphicsLayer.cpp(1321)] "LayoutIFrame (relative positioned) IFRAME id='nestingFrame'" Uninvalidated old/new pixels mismatch at 439,2 old:ff808080 new:0 [1:1:1227/141558.627780:3128447411388:ERROR:GraphicsLayer.cpp(1321)] "LayoutIFrame (relative positioned) IFRAME id='nestingFrame'" Uninvalidated old/new pixels mismatch at 440,2 old:ff808080 new:0 [1:1:1227/141558.628015:3128447411614:ERROR:GraphicsLayer.cpp(1321)] "LayoutIFrame (relative positioned) IFRAME id='nestingFrame'" Uninvalidated old/new pixels mismatch at 441,2 old:ff808080 new:0 [1:1:1227/141558.628241:3128447411840:ERROR:GraphicsLayer.cpp(1321)] "LayoutIFrame (relative positioned) IFRAME id='nestingFrame'" Uninvalidated old/new pixels mismatch at 442,2 old:ff808080 new:0 [1:1:1227/141558.628468:3128447412061:ERROR:GraphicsLayer.cpp(1321)] "LayoutIFrame (relative positioned) IFRAME id='nestingFrame'" Uninvalidated old/new pixels mismatch at 443,2 old:ff808080 new:0 [1:1:1227/141558.628689:3128447412297:ERROR:GraphicsLayer.cpp(1321)] "LayoutIFrame (relative positioned) IFRAME id='nestingFrame'" Uninvalidated old/new pixels mismatch at 444,2 old:ff808080 new:0 [1:1:1227/141558.628924:3128447412396:ERROR:GraphicsLayer.cpp(1321)] "LayoutIFrame (relative positioned) IFRAME id='nestingFrame'" Uninvalidated old/new pixels mismatch at 445,2 old:ff808080 new:0 ...
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Jan 3 2017
These under-invalidated pixels are on a layer with a scrollbar, and the pixels are under the scrollbar, so they don't actually cause visible corrupted rendering. It seems that the old pixels are for a non-composited scrollbar. After the scrollbar is composited these pixels are not invalidated. |
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Comment 1 by wangxianzhu@chromium.org
, Dec 27 2016Cc: -wangxianzhu@chromium.org
Owner: wangxianzhu@chromium.org
Status: Assigned (was: Available)