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   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 RenderPass::Id FirstContributingRenderPassId() const OVERRIDE;
  32   virtual RenderPass::Id NextContributingRenderPassId(
  33       RenderPass::Id 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(
  79       RenderPass::Id delegated_render_pass_id,
  80       RenderPass::Id* output_render_pass_id) const;
  81
  82   void AppendRenderPassQuads(
  83       RenderPass* render_pass,
  84       const OcclusionTracker<LayerImpl>& occlusion_tracker,
  85       AppendQuadsData* append_quads_data,
  86       const RenderPass* delegated_render_pass,
  87       const gfx::Size& frame_size) const;
  88
  89   // LayerImpl overrides.
  90   virtual const char* LayerTypeAsString() const OVERRIDE;
  91
  92   bool have_render_passes_to_push_;
  93   float inverse_device_scale_factor_;
  94   RenderPassList render_passes_in_draw_order_;
  95   base::hash_map<RenderPass::Id, int> render_passes_index_by_id_;
  96   ResourceProvider::ResourceIdArray resources_;
  97
  98   int child_id_;
  99   bool own_child_id_;
 100
 101   DISALLOW_COPY_AND_ASSIGN(DelegatedRendererLayerImpl);
 102 };
 103
 104 }  // namespace cc
 105
 106 #endif  // CC_LAYERS_DELEGATED_RENDERER_LAYER_IMPL_H_