Changeset 83490 in webkit

Timestamp:

Apr 11, 2011 1:43:51 PM (13 years ago)

Author:

senorblanco@chromium.org

Message:

2011-04-05 Stephen White <​senorblanco@chromium.org>

Fix for jittering when animating a rotated image.
​https://bugs.webkit.org/show_bug.cgi?id=50775

Make GraphicsContext::roundToDevicePixels a no-op on Chrome/Mac.

• platform/graphics/cg/GraphicsContextCG.cpp: (WebCore::GraphicsContext::roundToDevicePixels):

Location:

trunk/Source/WebCore

Files:

• ChangeLog (modified) (1 diff)
• platform/graphics/cg/GraphicsContextCG.cpp (modified) (2 diffs)

trunk/Source/WebCore/ChangeLog

@@ +1 @@
+2011-04-05  Stephen White  <senorblanco@chromium.org>
+
+        Fix for jittering when animating a rotated image.
+        https://bugs.webkit.org/show_bug.cgi?id=50775
+
+        Make GraphicsContext::roundToDevicePixels a no-op on Chrome/Mac.
+
+        * platform/graphics/cg/GraphicsContextCG.cpp:
+        (WebCore::GraphicsContext::roundToDevicePixels):
+
 2011-04-06  Xiaomei Ji  <xji@chromium.org>
 

trunk/Source/WebCore/platform/graphics/cg/GraphicsContextCG.cpp

@@ -1175 +1175 @@
 FloatRect GraphicsContext::roundToDevicePixels(const FloatRect& rect, RoundingMode roundingMode)
 {
+#if PLATFORM(CHROMIUM)
+    return rect;
+#else
     // It is not enough just to round to pixels in device space. The rotation part of the
     // affine transform matrix to device space can mess with this conversion if we have a
@@ -1215 +1218 @@
     FloatPoint roundedLowerRight = FloatPoint(deviceLowerRight.x / deviceScaleX, deviceLowerRight.y / deviceScaleY);
     return FloatRect(roundedOrigin, roundedLowerRight - roundedOrigin);
+#endif
 }