Changeset 84529 in webkit

Timestamp:

Apr 21, 2011 11:39:17 AM (13 years ago)

Author:

enne@google.com

Message:

2011-04-21 Adrienne Walker <​enne@google.com>

Reviewed by James Robinson.

[chromium] Clamp dirty regions on content layers to layer bounds
​https://bugs.webkit.org/show_bug.cgi?id=58933

This prevents garbage being rendered when layers are resized and a
previous invalidation (now off-layer) is no longer valid.

• platform/graphics/chromium/ContentLayerChromium.cpp: (WebCore::ContentLayerChromium::paintContentsIfDirty):

Location:

trunk/Source/WebCore

Files:

• ChangeLog (modified) (1 diff)
• platform/graphics/chromium/ContentLayerChromium.cpp (modified) (1 diff)

trunk/Source/WebCore/ChangeLog

@@ +1 @@
+2011-04-21  Adrienne Walker  <enne@google.com>
+
+        Reviewed by James Robinson.
+
+        [chromium] Clamp dirty regions on content layers to layer bounds
+        https://bugs.webkit.org/show_bug.cgi?id=58933
+
+        This prevents garbage being rendered when layers are resized and a
+        previous invalidation (now off-layer) is no longer valid.
+
+        * platform/graphics/chromium/ContentLayerChromium.cpp:
+        (WebCore::ContentLayerChromium::paintContentsIfDirty):
+
 2011-04-21  Roland Steiner  <rolandsteiner@chromium.org>
 

trunk/Source/WebCore/platform/graphics/chromium/ContentLayerChromium.cpp

@@ -101 +101 @@
     if (layerRect.isEmpty())
         return;
-    m_tiler->invalidateRect(enclosingIntRect(m_dirtyRect));
+
+    IntRect dirty = enclosingIntRect(m_dirtyRect);
+    dirty.intersect(layerBounds());
+    m_tiler->invalidateRect(dirty);
+
     m_tiler->update(painter, layerRect);
     m_dirtyRect = FloatRect();