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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/173295">173295</a></dd>
<dt>Author</dt> <dd>simon.fraser@apple.com</dd>
<dt>Date</dt> <dd>2014-09-04 17:23:10 -0700 (Thu, 04 Sep 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>border-radius should not force layer backing store
https://bugs.webkit.org/show_bug.cgi?id=136555
Reviewed by Dean Jackson.
Source/WebCore:
Border-radius is not a reason to allocate backing store; it's not relevant unless
we also have a border or background, and hasBoxDecorations() already checks for that.
With that gone, we can now use renderer.hasBoxDecorations() (which also checks for
a background), but it doesn't check for outlines, so do that in addition.
Test: compositing/backing/border-radius-no-backing.html
* rendering/RenderLayer.cpp:
(WebCore::RenderLayer::calculateClipRects):
LayoutTests:
Test that dumps layers on some composited elements with border-radius
* compositing/backing/border-radius-no-backing-expected.txt: Added.
* compositing/backing/border-radius-no-backing.html: Added.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderLayercpp">trunk/Source/WebCore/rendering/RenderLayer.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestscompositingbackingborderradiusnobackingexpectedtxt">trunk/LayoutTests/compositing/backing/border-radius-no-backing-expected.txt</a></li>
<li><a href="#trunkLayoutTestscompositingbackingborderradiusnobackinghtml">trunk/LayoutTests/compositing/backing/border-radius-no-backing.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (173294 => 173295)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2014-09-05 00:23:08 UTC (rev 173294)
+++ trunk/LayoutTests/ChangeLog 2014-09-05 00:23:10 UTC (rev 173295)
</span><span class="lines">@@ -1,5 +1,17 @@
</span><span class="cx"> 2014-09-04 Simon Fraser <simon.fraser@apple.com>
</span><span class="cx">
</span><ins>+ border-radius should not force layer backing store
+ https://bugs.webkit.org/show_bug.cgi?id=136555
+
+ Reviewed by Dean Jackson.
+
+ Test that dumps layers on some composited elements with border-radius
+
+ * compositing/backing/border-radius-no-backing-expected.txt: Added.
+ * compositing/backing/border-radius-no-backing.html: Added.
+
+2014-09-04 Simon Fraser <simon.fraser@apple.com>
+
</ins><span class="cx"> CSS filter on a compositing layer should not cause unncessary backing store allocation
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=136557
</span><span class="cx">
</span></span></pre></div>
<a id="trunkLayoutTestscompositingbackingborderradiusnobackingexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/compositing/backing/border-radius-no-backing-expected.txt (0 => 173295)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/compositing/backing/border-radius-no-backing-expected.txt (rev 0)
+++ trunk/LayoutTests/compositing/backing/border-radius-no-backing-expected.txt 2014-09-05 00:23:10 UTC (rev 173295)
</span><span class="lines">@@ -0,0 +1,30 @@
</span><ins>+(GraphicsLayer
+ (anchor 0.00 0.00)
+ (bounds 800.00 600.00)
+ (children 1
+ (GraphicsLayer
+ (bounds 800.00 600.00)
+ (contentsOpaque 1)
+ (children 2
+ (GraphicsLayer
+ (position 8.00 8.00)
+ (bounds 784.00 124.00)
+ (drawsContent 1)
+ (children 1
+ (GraphicsLayer
+ (position 12.00 12.00)
+ (bounds 100.00 100.00)
+ (contentsOpaque 1)
+ )
+ )
+ )
+ (GraphicsLayer
+ (position 8.00 132.00)
+ (bounds 100.00 100.00)
+ (drawsContent 1)
+ )
+ )
+ )
+ )
+)
+
</ins></span></pre></div>
<a id="trunkLayoutTestscompositingbackingborderradiusnobackinghtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/compositing/backing/border-radius-no-backing.html (0 => 173295)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/compositing/backing/border-radius-no-backing.html (rev 0)
+++ trunk/LayoutTests/compositing/backing/border-radius-no-backing.html 2014-09-05 00:23:10 UTC (rev 173295)
</span><span class="lines">@@ -0,0 +1,50 @@
</span><ins>+<!DOCTYPE html>
+
+<html>
+<head>
+ <style>
+ .container {
+ padding: 10px;
+ border: 2px solid black;
+ }
+ .box {
+ height: 100px;
+ width: 100px;
+ background-color: blue;
+ }
+
+ .composited {
+ -webkit-transform: translateZ(0);
+ }
+
+ .rounded {
+ border-radius: 50%;
+ }
+ </style>
+ <script>
+ if (window.testRunner)
+ testRunner.dumpAsText();
+
+ function dumpLayers()
+ {
+ var layersResult = document.getElementById('layers');
+ if (window.testRunner)
+ layersResult.innerText = window.internals.layerTreeAsText(document);
+ }
+
+ window.addEventListener('load', dumpLayers, false)
+ </script>
+</head>
+<body>
+
+ <div class="composited rounded container">
+ <div class="composited box">
+ </div>
+ </div>
+
+<div class="composited rounded box">
+</div>
+
+<pre id="layers">Layer tree goes here in DRT</pre>
+</body>
+</html>
</ins></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (173294 => 173295)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2014-09-05 00:23:08 UTC (rev 173294)
+++ trunk/Source/WebCore/ChangeLog 2014-09-05 00:23:10 UTC (rev 173295)
</span><span class="lines">@@ -1,5 +1,23 @@
</span><span class="cx"> 2014-09-04 Simon Fraser <simon.fraser@apple.com>
</span><span class="cx">
</span><ins>+ border-radius should not force layer backing store
+ https://bugs.webkit.org/show_bug.cgi?id=136555
+
+ Reviewed by Dean Jackson.
+
+ Border-radius is not a reason to allocate backing store; it's not relevant unless
+ we also have a border or background, and hasBoxDecorations() already checks for that.
+
+ With that gone, we can now use renderer.hasBoxDecorations() (which also checks for
+ a background), but it doesn't check for outlines, so do that in addition.
+
+ Test: compositing/backing/border-radius-no-backing.html
+
+ * rendering/RenderLayer.cpp:
+ (WebCore::RenderLayer::calculateClipRects):
+
+2014-09-04 Simon Fraser <simon.fraser@apple.com>
+
</ins><span class="cx"> CSS filter on a compositing layer should not cause unncessary backing store allocation
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=136557
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderLayercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderLayer.cpp (173294 => 173295)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderLayer.cpp 2014-09-05 00:23:08 UTC (rev 173294)
+++ trunk/Source/WebCore/rendering/RenderLayer.cpp 2014-09-05 00:23:10 UTC (rev 173295)
</span><span class="lines">@@ -6246,15 +6246,9 @@
</span><span class="cx"> parent()->dirtyAncestorChainHasSelfPaintingLayerDescendantStatus();
</span><span class="cx"> }
</span><span class="cx">
</span><del>-// FIXME: use RenderObject::hasBoxDecorations(). And why hasBorderRadius()?
-static bool hasBoxDecorations(const RenderStyle& style)
-{
- return style.hasBorder() || style.hasBorderRadius() || style.hasOutline() || style.hasAppearance() || style.boxShadow();
-}
-
</del><span class="cx"> static bool hasBoxDecorationsOrBackground(const RenderElement& renderer)
</span><span class="cx"> {
</span><del>- return hasBoxDecorations(renderer.style()) || renderer.hasBackground();
</del><ins>+ return renderer.hasBoxDecorations() || renderer.style().hasOutline();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> // Constrain the depth and breadth of the search for performance.
</span></span></pre>
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