Index: cc/resources/tiling_set_raster_queue.h |
diff --git a/cc/resources/tiling_set_raster_queue.h b/cc/resources/tiling_set_raster_queue.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..58faa8a78c90fc17fe83f11b39a38695f5b1e869 |
--- /dev/null |
+++ b/cc/resources/tiling_set_raster_queue.h |
@@ -0,0 +1,46 @@ |
+// Copyright 2014 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. |
+ |
+#ifndef CC_RESOURCES_TILING_SET_RASTER_QUEUE_H_ |
+#define CC_RESOURCES_TILING_SET_RASTER_QUEUE_H_ |
+ |
+#include "cc/base/cc_export.h" |
+#include "cc/resources/picture_layer_tiling_set.h" |
+ |
+namespace cc { |
+ |
+class CC_EXPORT TilingSetRasterQueue { |
+ public: |
+ TilingSetRasterQueue(); |
+ TilingSetRasterQueue(PictureLayerTilingSet* tiling_set, |
+ bool prioritize_low_res); |
+ ~TilingSetRasterQueue(); |
+ |
+ Tile* Top(); |
+ const Tile* Top() const; |
+ void Pop(); |
+ bool IsEmpty() const; |
+ |
+ private: |
+ enum IteratorType { LOW_RES, HIGH_RES, NUM_ITERATORS }; |
+ |
+ void AdvanceToNextStage(); |
+ |
+ PictureLayerTilingSet* tiling_set_; |
+ |
+ struct IterationStage { |
+ IteratorType iterator_type; |
+ TilePriority::PriorityBin tile_type; |
+ }; |
+ |
+ size_t current_stage_; |
+ |
+ // One low res stage, and three high res stages. |
+ IterationStage stages_[4]; |
+ PictureLayerTiling::TilingRasterTileIterator iterators_[NUM_ITERATORS]; |
+}; |
+ |
+} // namespace cc |
+ |
+#endif // CC_RESOURCES_TILING_SET_RASTER_QUEUE_H_ |