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Side by Side Diff: cc/resources/tiling_set_raster_queue_required.h

Issue 816453008: cc: Split tiling set raster queues into all and required. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: update Created 5 years, 11 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef CC_RESOURCES_TILING_SET_RASTER_QUEUE_REQUIRED_H_
6 #define CC_RESOURCES_TILING_SET_RASTER_QUEUE_REQUIRED_H_
7
8 #include "cc/base/cc_export.h"
9 #include "cc/resources/picture_layer_tiling_set.h"
10 #include "cc/resources/raster_tile_priority_queue.h"
11 #include "cc/resources/tile.h"
12 #include "cc/resources/tiling_set_raster_queue.h"
13
14 namespace cc {
15
16 // This queue only returns tiles that are required for either activation or
17 // draw, as specified by RasterTilePriorityQueue::Type passed in the
18 // constructor.
19 class CC_EXPORT TilingSetRasterQueueRequired : public TilingSetRasterQueue {
20 public:
21 TilingSetRasterQueueRequired(PictureLayerTilingSet* tiling_set,
22 RasterTilePriorityQueue::Type type);
23 ~TilingSetRasterQueueRequired() override;
24
25 Tile* Top() override;
26 const Tile* Top() const override;
27 void Pop() override;
28 bool IsEmpty() const override;
29
30 private:
31 // This iterator will return all tiles that are in the NOW bin on the given
danakj 2015/01/12 18:23:13 Yay class comment!
32 // tiling. The queue can then use these tiles and further filter them based on
33 // whether they are required or not.
34 class TilingIterator {
35 public:
36 TilingIterator();
37 explicit TilingIterator(PictureLayerTiling* tiling,
38 TilingData* tiling_data);
39 ~TilingIterator();
40
41 bool done() const { return current_tile_ == nullptr; }
42 const Tile* operator*() const { return current_tile_; }
43 Tile* operator*() { return current_tile_; }
44 TilingIterator& operator++();
45
46 private:
47 PictureLayerTiling* tiling_;
48 TilingData* tiling_data_;
49
50 Tile* current_tile_;
51 TilingData::Iterator visible_iterator_;
52 };
53
54 bool IsTileRequired(const Tile* tile) const;
55
56 TilingIterator iterator_;
57 RasterTilePriorityQueue::Type type_;
58 };
59
60 } // namespace cc
61
62 #endif // CC_RESOURCES_TILING_SET_RASTER_QUEUE_REQUIRED_H_
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