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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/212495">212495</a></dd>
<dt>Author</dt> <dd>matthew_hanson@apple.com</dd>
<dt>Date</dt> <dd>2017-02-16 16:56:17 -0800 (Thu, 16 Feb 2017)</dd>
</dl>

<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/212152">r212152</a>. rdar://problem/30459055</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari603branchLayoutTestsChangeLog">branches/safari-603-branch/LayoutTests/ChangeLog</a></li>
<li><a href="#branchessafari603branchSourceWebCoreChangeLog">branches/safari-603-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari603branchSourceWebCoreplatformgraphicscaTileGridcpp">branches/safari-603-branch/Source/WebCore/platform/graphics/ca/TileGrid.cpp</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#branchessafari603branchLayoutTeststileddrawingtilecoverageiframetozerocoverageexpectedtxt">branches/safari-603-branch/LayoutTests/tiled-drawing/tile-coverage-iframe-to-zero-coverage-expected.txt</a></li>
<li><a href="#branchessafari603branchLayoutTeststileddrawingtilecoverageiframetozerocoveragehtml">branches/safari-603-branch/LayoutTests/tiled-drawing/tile-coverage-iframe-to-zero-coverage.html</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari603branchLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/LayoutTests/ChangeLog (212494 => 212495)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/LayoutTests/ChangeLog        2017-02-17 00:56:14 UTC (rev 212494)
+++ branches/safari-603-branch/LayoutTests/ChangeLog        2017-02-17 00:56:17 UTC (rev 212495)
</span><span class="lines">@@ -1,5 +1,19 @@
</span><span class="cx"> 2017-02-16  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
</span><span class="cx"> 
</span><ins>+        Merge r212152. rdar://problem/30459055
+
+    2017-02-09  Simon Fraser  &lt;simon.fraser@apple.com&gt;
+
+            Tiled layers are sometimes left with some tiles when outside the viewport
+            https://bugs.webkit.org/show_bug.cgi?id=168104
+
+            Reviewed by Tim Horton.
+
+            * tiled-drawing/tile-coverage-iframe-to-zero-coverage-expected.txt: Added.
+            * tiled-drawing/tile-coverage-iframe-to-zero-coverage.html: Added.
+
+2017-02-16  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
+
</ins><span class="cx">         Merge r211662. rdar://problem/30467322
</span><span class="cx"> 
</span><span class="cx">     2017-02-03  Simon Fraser  &lt;simon.fraser@apple.com&gt;
</span></span></pre></div>
<a id="branchessafari603branchLayoutTeststileddrawingtilecoverageiframetozerocoverageexpectedtxt"></a>
<div class="addfile"><h4>Added: branches/safari-603-branch/LayoutTests/tiled-drawing/tile-coverage-iframe-to-zero-coverage-expected.txt (0 => 212495)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/LayoutTests/tiled-drawing/tile-coverage-iframe-to-zero-coverage-expected.txt                                (rev 0)
+++ branches/safari-603-branch/LayoutTests/tiled-drawing/tile-coverage-iframe-to-zero-coverage-expected.txt        2017-02-17 00:56:17 UTC (rev 212495)
</span><span class="lines">@@ -0,0 +1,104 @@
</span><ins>+
+(GraphicsLayer
+  (anchor 0.00 0.00)
+  (bounds 858.00 5016.00)
+  (visible rect 0.00, 3000.00 785.00 x 585.00)
+  (coverage rect 0.00, 3000.00 785.00 x 585.00)
+  (intersects coverage rect 1)
+  (contentsScale 1.00)
+  (children 1
+    (GraphicsLayer
+      (bounds 858.00 5016.00)
+      (contentsOpaque 1)
+      (visible rect 0.00, 3000.00 785.00 x 585.00)
+      (coverage rect 0.00, 3000.00 785.00 x 585.00)
+      (intersects coverage rect 1)
+      (contentsScale 1.00)
+      (tile cache coverage 0, 2560 858 x 1536)
+      (tile size 512 x 512)
+      (top left tile 0, 5 tiles grid 2 x 3)
+      (in window 1)
+      (children 1
+        (GraphicsLayer
+          (position 1.00 1.00)
+          (bounds 857.00 464.00)
+          (drawsContent 1)
+          (visible rect 0.00, 0.00 0.00 x 0.00)
+          (coverage rect -1.00, 2999.00 785.00 x 585.00)
+          (intersects coverage rect 0)
+          (contentsScale 1.00)
+          (children 1
+            (GraphicsLayer
+              (position 32.00 32.00)
+              (visible rect 0.00, 0.00 0.00 x 0.00)
+              (coverage rect -33.00, 2967.00 785.00 x 585.00)
+              (intersects coverage rect 0)
+              (contentsScale 1.00)
+              (children 1
+                (GraphicsLayer
+                  (anchor 0.00 0.00)
+                  (bounds 800.00 400.00)
+                  (visible rect 0.00, 0.00 0.00 x 0.00)
+                  (coverage rect 0.00, 0.00 0.00 x 0.00)
+                  (intersects coverage rect 0)
+                  (contentsScale 1.00)
+                  (children 1
+                    (GraphicsLayer
+                      (visible rect 0.00, 0.00 0.00 x 0.00)
+                      (coverage rect 0.00, 0.00 0.00 x 0.00)
+                      (intersects coverage rect 0)
+                      (contentsScale 1.00)
+                      (children 1
+                        (GraphicsLayer
+                          (anchor 0.00 0.00)
+                          (bounds 2508.00 400.00)
+                          (visible rect 0.00, 0.00 0.00 x 0.00)
+                          (coverage rect 0.00, 0.00 0.00 x 0.00)
+                          (intersects coverage rect 0)
+                          (contentsScale 1.00)
+                          (children 1
+                            (GraphicsLayer
+                              (bounds 2508.00 400.00)
+                              (usingTiledLayer 1)
+                              (drawsContent 1)
+                              (visible rect 0.00, 0.00 0.00 x 0.00)
+                              (coverage rect 0.00, 0.00 0.00 x 0.00)
+                              (intersects coverage rect 0)
+                              (contentsScale 1.00)
+                              (tile cache coverage 0, 0 0 x 0)
+                              (tile size 512 x 512)
+                              (top left tile 0, 0 tiles grid 0 x 0)
+                              (in window 1)
+                              (children 1
+                                (GraphicsLayer
+                                  (position 8.00 8.00)
+                                  (bounds 2500.00 200.00)
+                                  (usingTiledLayer 1)
+                                  (contentsOpaque 1)
+                                  (drawsContent 1)
+                                  (visible rect 0.00, 0.00 0.00 x 0.00)
+                                  (coverage rect -8.00, -8.00 0.00 x 0.00)
+                                  (intersects coverage rect 0)
+                                  (contentsScale 1.00)
+                                  (tile cache coverage 0, 0 0 x 0)
+                                  (tile size 512 x 512)
+                                  (top left tile 0, 0 tiles grid 0 x 0)
+                                  (in window 1)
+                                )
+                              )
+                            )
+                          )
+                        )
+                      )
+                    )
+                  )
+                )
+              )
+            )
+          )
+        )
+      )
+    )
+  )
+)
+
</ins></span></pre></div>
<a id="branchessafari603branchLayoutTeststileddrawingtilecoverageiframetozerocoveragehtml"></a>
<div class="addfile"><h4>Added: branches/safari-603-branch/LayoutTests/tiled-drawing/tile-coverage-iframe-to-zero-coverage.html (0 => 212495)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/LayoutTests/tiled-drawing/tile-coverage-iframe-to-zero-coverage.html                                (rev 0)
+++ branches/safari-603-branch/LayoutTests/tiled-drawing/tile-coverage-iframe-to-zero-coverage.html        2017-02-17 00:56:17 UTC (rev 212495)
</span><span class="lines">@@ -0,0 +1,43 @@
</span><ins>+&lt;!DOCTYPE html&gt;
+
+&lt;html&gt;
+&lt;head&gt;
+    &lt;style&gt;
+        body {
+            height: 5000px;
+        }
+        iframe {
+            height: 400px;
+            width: 800px;
+            border: 5px solid black;
+            box-shadow: 0 0 5px black;
+            padding: 20px;
+        }
+    &lt;/style&gt;
+    &lt;script&gt;
+        if (window.testRunner) {
+            testRunner.dumpAsText();
+            testRunner.waitUntilDone();
+        }
+
+        function doTest()
+        {
+            setTimeout(function() {
+                window.scrollTo(0, 3000);
+                if (window.internals) {
+                    document.getElementById('layers').innerText = internals.layerTreeAsText(document,
+                        internals.LAYER_TREE_INCLUDES_VISIBLE_RECTS | internals.LAYER_TREE_INCLUDES_TILE_CACHES);
+                }
+                if (window.testRunner)
+                    testRunner.notifyDone();
+            }, 0);
+        }
+        window.addEventListener('load', doTest, false);
+    &lt;/script&gt;
+&lt;/head&gt;
+&lt;body&gt;
+
+&lt;iframe scrolling=&quot;no&quot; srcdoc=&quot;&lt;div style='width: 2500px; height: 200px; background-color: silver; will-change: transform'&gt;Stuff here&lt;/div&gt;&quot;&gt;&lt;/iframe&gt;
+&lt;pre id=&quot;layers&quot;&gt;Layer tree goes here&lt;/p&gt;
+&lt;/body&gt;
+&lt;/html&gt;
</ins></span></pre></div>
<a id="branchessafari603branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/Source/WebCore/ChangeLog (212494 => 212495)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/Source/WebCore/ChangeLog        2017-02-17 00:56:14 UTC (rev 212494)
+++ branches/safari-603-branch/Source/WebCore/ChangeLog        2017-02-17 00:56:17 UTC (rev 212495)
</span><span class="lines">@@ -1,5 +1,28 @@
</span><span class="cx"> 2017-02-16  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
</span><span class="cx"> 
</span><ins>+        Merge r212152. rdar://problem/30459055
+
+    2017-02-09  Simon Fraser  &lt;simon.fraser@apple.com&gt;
+
+            Tiled layers are sometimes left with some tiles when outside the viewport
+            https://bugs.webkit.org/show_bug.cgi?id=168104
+            rdar://problem/30459055
+
+            Reviewed by Tim Horton.
+
+            When the coverage rect of a TiledBacking goes from a non-empty rect to an empty rect, we
+            shouldn't just early return from TileGrid::revalidateTiles(), otherwise we are left with some
+            tiles. Run through the function as normal, which will remove all the tiles for an empty coverage rect.
+
+            Minor logging changes.
+
+            Test: tiled-drawing/tile-coverage-iframe-to-zero-coverage.html
+
+            * platform/graphics/ca/TileGrid.cpp:
+            (WebCore::TileGrid::revalidateTiles):
+
+2017-02-16  Matthew Hanson  &lt;matthew_hanson@apple.com&gt;
+
</ins><span class="cx">         Merge r212151. rdar://problem/30090186
</span><span class="cx"> 
</span><span class="cx">     2017-02-10  Zalan Bujtas  &lt;zalan@apple.com&gt;
</span></span></pre></div>
<a id="branchessafari603branchSourceWebCoreplatformgraphicscaTileGridcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/Source/WebCore/platform/graphics/ca/TileGrid.cpp (212494 => 212495)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/Source/WebCore/platform/graphics/ca/TileGrid.cpp        2017-02-17 00:56:14 UTC (rev 212494)
+++ branches/safari-603-branch/Source/WebCore/platform/graphics/ca/TileGrid.cpp        2017-02-17 00:56:17 UTC (rev 212495)
</span><span class="lines">@@ -352,11 +352,8 @@
</span><span class="cx">     FloatRect coverageRect = m_controller.coverageRect();
</span><span class="cx">     IntRect bounds = m_controller.bounds();
</span><span class="cx"> 
</span><del>-    LOG_WITH_STREAM(Tiling, stream &lt;&lt; &quot;TileGrid &quot; &lt;&lt; this &lt;&lt; &quot; revalidateTiles: bounds &quot; &lt;&lt; bounds &lt;&lt; &quot; coverageRect&quot; &lt;&lt; coverageRect &lt;&lt; &quot; validation: &quot; &lt;&lt; validationPolicyAsString(validationPolicy));
</del><ins>+    LOG_WITH_STREAM(Tiling, stream &lt;&lt; &quot;TileGrid &quot; &lt;&lt; this &lt;&lt; &quot; (controller &quot; &lt;&lt; &amp;m_controller &lt;&lt; &quot;) revalidateTiles: bounds &quot; &lt;&lt; bounds &lt;&lt; &quot; coverageRect&quot; &lt;&lt; coverageRect &lt;&lt; &quot; validation: &quot; &lt;&lt; validationPolicyAsString(validationPolicy));
</ins><span class="cx"> 
</span><del>-    if (coverageRect.isEmpty() || bounds.isEmpty())
-        return;
-
</del><span class="cx">     FloatRect scaledRect(coverageRect);
</span><span class="cx">     scaledRect.scale(m_scale);
</span><span class="cx">     IntRect coverageRectInTileCoords(enclosingIntRect(scaledRect));
</span></span></pre>
</div>
</div>

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