From 34c42dc62d0d9894b353fff39eac1862c03af931 Mon Sep 17 00:00:00 2001
From: Nicolas Roard <nicolasroard@google.com>
Date: Tue, 21 Feb 2012 16:13:25 -0800
Subject: Move Canvas elements to their own composited layer

This drastically improves performances, as invalidating a canvas
will only touch that one layer instead of (possibly) invalidating the
entire PictureSet.

bug:5247823
Change-Id: Iec4de74d25e58e63f0198bbd7558c461d9a11cfd
---
 Source/WebCore/rendering/RenderLayerCompositor.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'Source/WebCore/rendering/RenderLayerCompositor.cpp')

diff --git a/Source/WebCore/rendering/RenderLayerCompositor.cpp b/Source/WebCore/rendering/RenderLayerCompositor.cpp
index 03f1e41..25a08e7 100644
--- a/Source/WebCore/rendering/RenderLayerCompositor.cpp
+++ b/Source/WebCore/rendering/RenderLayerCompositor.cpp
@@ -1410,6 +1410,10 @@ bool RenderLayerCompositor::requiresCompositingForAndroidLayers(const RenderLaye
     if (layer->isFixed())
         return true;
 #endif
+
+    if (layer->renderer()->isCanvas())
+        return true;
+
     return false;
 }
 #endif
-- 
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