Pass accurate contentsScale to LayerImpl.

cc/tiled_layer_unittest.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include "cc/tiled_layer.h"
 
 #include "cc/bitmap_content_layer_updater.h"
 #include "cc/layer_painter.h"
@@ skipping 1150 matching lines @@
     TestOcclusionTracker occluded;
 
     // The tile size is 100x100.
 
     // This makes sure the painting works when the content space is scaled to
     // a different layer space. In this case tiles are scaled to be 200x200
     // pixels, which means none should be occluded.
     layer->setContentsScale(0.5);
     layer->setBounds(IntSize(600, 600));
     WebTransformationMatrix drawTransform;
-    drawTransform.scale(1 / layer->contentsScale());
+    drawTransform.scale(1 / layer->contentsScaleX());

[enne (OOO), 2012/10/29 19:19:41]

Also assert that contentsScaleX == contentsScaleY, since this is asymmetrical?

[wangxianzhu, 2012/10/30 02:14:21]

Done.

     layer->setDrawTransform(drawTransform);
     layer->setScreenSpaceTransform(drawTransform);
 
     occluded.setOcclusion(IntRect(200, 200, 300, 100));
     layer->setDrawableContentRect(IntRect(IntPoint(), layer->contentBounds()));
     layer->setVisibleContentRect(IntRect(IntPoint(), layer->contentBounds()));
     layer->invalidateContentRect(IntRect(0, 0, 600, 600));
     layer->setTexturePriorities(m_priorityCalculator);
     m_textureManager->prioritizeTextures();
     layer->update(*m_queue.get(), &occluded, m_stats);
@@ skipping 437 matching lines @@
     updateTextures();
 
     // Invalidate the entire layer in layer space. When painting, the rect given to webkit should match the layer's bounds.
     layer->setNeedsDisplayRect(layerRect);
     layer->update(*m_queue.get(), 0, m_stats);
 
     EXPECT_RECT_EQ(layerRect, layer->trackingLayerPainter()->paintedRect());
 }
 
 } // namespace