Changeset 194576 in webkit

Timestamp:

Jan 4, 2016 11:37:52 PM (8 years ago)

Author:

zandobersek@gmail.com

Message:

Shave off a TransformationMatrix copy if RenderLayer's transparencyClipBox()
​https://bugs.webkit.org/show_bug.cgi?id=152119

Reviewed by Simon Fraser.

• rendering/RenderLayer.cpp:

(WebCore::transparencyClipBox): Multiply the transformation matrix returned by
layer.transform() directly into the transform object, instead of first
multiplying them and then copying the result back into the transform object.

Location:

trunk/Source/WebCore

Files:

• ChangeLog (modified) (1 diff)
• rendering/RenderLayer.cpp (modified) (1 diff)

trunk/Source/WebCore/ChangeLog

@@ +1 @@
+2016-01-04  Zan Dobersek  <zdobersek@igalia.com>
+
+        Shave off a TransformationMatrix copy if RenderLayer's transparencyClipBox()
+        https://bugs.webkit.org/show_bug.cgi?id=152119
+
+        Reviewed by Simon Fraser.
+
+        * rendering/RenderLayer.cpp:
+        (WebCore::transparencyClipBox): Multiply the transformation matrix returned by
+        layer.transform() directly into the transform object, instead of first
+        multiplying them and then copying the result back into the transform object.
+
 2016-01-04  Myles C. Maxfield  <mmaxfield@apple.com>
 

trunk/Source/WebCore/rendering/RenderLayer.cpp

@@ -1755 +1755 @@
         TransformationMatrix transform;
         transform.translate(delta.width(), delta.height());
-        transform = transform * *layer.transform();
+        transform.multiply(*layer.transform());
 
         // We don't use fragment boxes when collecting a transformed layer's bounding box, since it always