Merge r224671 - [GTK][WPE] CoordinatedGraphicsLayer::setNeedsDisplayI…

…nRect() converts FloatRect to IntRect erroneously

https://bugs.webkit.org/show_bug.cgi?id=179476

Reviewed by Žan Doberšek.

Convert the passed FloatRect into an IntRect using enclosingIntRect(), so we are guaranteed that
the rectangle to paint fits into the buffer that the backingStore will allocate.

No behaviour change.

* platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:
(WebCore::CoordinatedGraphicsLayer::setNeedsDisplayInRect):

Source/WebCore/ChangeLog

@@ -1,3 +1,18 @@
+2017-11-10  Miguel Gomez  <magomez@igalia.com>
+
+        [GTK][WPE] CoordinatedGraphicsLayer::setNeedsDisplayInRect() converts FloatRect to IntRect erroneously
+        https://bugs.webkit.org/show_bug.cgi?id=179476
+
+        Reviewed by Žan Doberšek.
+
+        Convert the passed FloatRect into an IntRect using enclosingIntRect(), so we are guaranteed that
+        the rectangle to paint fits into the buffer that the backingStore will allocate.
+
+        No behaviour change.
+
+        * platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:
+        (WebCore::CoordinatedGraphicsLayer::setNeedsDisplayInRect):
+
 2017-12-18  Zalan Bujtas  <zalan@apple.com>
 
         [SVG] Detach list wrappers before resetting the base value.

Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp

@@ -532,7 +532,7 @@ void CoordinatedGraphicsLayer::setNeedsDisplay()
 void CoordinatedGraphicsLayer::setNeedsDisplayInRect(const FloatRect& rect, ShouldClipToLayer)
 {
     if (m_mainBackingStore)
-        m_mainBackingStore->invalidate(IntRect(rect));
+        m_mainBackingStore->invalidate(enclosingIntRect(rect));
 
     didChangeLayerState();