1// Copyright 2012 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_LAYERS_DELEGATED_RENDERER_LAYER_IMPL_H_
6#define CC_LAYERS_DELEGATED_RENDERER_LAYER_IMPL_H_
7
8#include "base/containers/hash_tables.h"
9#include "base/memory/scoped_ptr.h"
10#include "cc/base/cc_export.h"
11#include "cc/base/scoped_ptr_vector.h"
12#include "cc/layers/layer_impl.h"
13
14namespace cc {
15class DelegatedFrameData;
16class RenderPassSink;
17
18class CC_EXPORT DelegatedRendererLayerImpl : public LayerImpl {
19 public:
20  static scoped_ptr<DelegatedRendererLayerImpl> Create(
21      LayerTreeImpl* tree_impl, int id) {
22    return make_scoped_ptr(new DelegatedRendererLayerImpl(tree_impl, id));
23  }
24  virtual ~DelegatedRendererLayerImpl();
25
26  // LayerImpl overrides.
27  virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
28      OVERRIDE;
29  virtual bool HasDelegatedContent() const OVERRIDE;
30  virtual bool HasContributingDelegatedRenderPasses() const OVERRIDE;
31  virtual RenderPassId FirstContributingRenderPassId() const OVERRIDE;
32  virtual RenderPassId NextContributingRenderPassId(
33      RenderPassId previous) const OVERRIDE;
34  virtual void ReleaseResources() OVERRIDE;
35  virtual bool WillDraw(DrawMode draw_mode,
36                        ResourceProvider* resource_provider) OVERRIDE;
37  virtual void AppendQuads(RenderPass* render_pass,
38                           const OcclusionTracker<LayerImpl>& occlusion_tracker,
39                           AppendQuadsData* append_quads_data) OVERRIDE;
40  virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
41
42  void AppendContributingRenderPasses(RenderPassSink* render_pass_sink);
43
44  // Creates an ID with the resource provider for the child renderer
45  // that will be sending quads to the layer. Registers the callback to
46  // inform when resources are no longer in use.
47  void CreateChildIdIfNeeded(const ReturnCallback& return_callback);
48
49  void SetFrameData(const DelegatedFrameData* frame_data,
50                    const gfx::RectF& damage_in_frame);
51
52  float inverse_device_scale_factor() const {
53    return inverse_device_scale_factor_;
54  }
55
56 protected:
57  DelegatedRendererLayerImpl(LayerTreeImpl* tree_impl, int id);
58
59  int ChildIdForTesting() const { return child_id_; }
60  const RenderPassList& RenderPassesInDrawOrderForTesting() const {
61    return render_passes_in_draw_order_;
62  }
63  const ResourceProvider::ResourceIdArray& ResourcesForTesting() const {
64    return resources_;
65  }
66
67 private:
68  void ClearChildId();
69
70  void AppendRainbowDebugBorder(RenderPass* render_pass,
71                                AppendQuadsData* append_quads_data);
72
73  void SetRenderPasses(RenderPassList* render_passes_in_draw_order);
74  void ClearRenderPasses();
75
76  // Returns |true| if the delegated_render_pass_id is part of the current
77  // frame and can be converted.
78  bool ConvertDelegatedRenderPassId(RenderPassId delegated_render_pass_id,
79                                    RenderPassId* output_render_pass_id) const;
80
81  void AppendRenderPassQuads(
82      RenderPass* render_pass,
83      const OcclusionTracker<LayerImpl>& occlusion_tracker,
84      AppendQuadsData* append_quads_data,
85      const RenderPass* delegated_render_pass,
86      const gfx::Size& frame_size) const;
87
88  // LayerImpl overrides.
89  virtual const char* LayerTypeAsString() const OVERRIDE;
90
91  bool have_render_passes_to_push_;
92  float inverse_device_scale_factor_;
93  RenderPassList render_passes_in_draw_order_;
94  base::hash_map<RenderPassId, int> render_passes_index_by_id_;
95  ResourceProvider::ResourceIdArray resources_;
96
97  int child_id_;
98  bool own_child_id_;
99
100  DISALLOW_COPY_AND_ASSIGN(DelegatedRendererLayerImpl);
101};
102
103}  // namespace cc
104
105#endif  // CC_LAYERS_DELEGATED_RENDERER_LAYER_IMPL_H_
106