cc/layers/delegated_renderer_layer_impl.h

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