src/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(QuadSink* quad_sink,
  38                            AppendQuadsData* append_quads_data) OVERRIDE;
  39   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
  40
  41   void AppendContributingRenderPasses(RenderPassSink* render_pass_sink);
  42
  43   // Creates an ID with the resource provider for the child renderer
  44   // that will be sending quads to the layer. Registers the callback to
  45   // inform when resources are no longer in use.
  46   void CreateChildIdIfNeeded(const ReturnCallback& return_callback);
  47
  48   void SetFrameData(const DelegatedFrameData* frame_data,
  49                     const gfx::RectF& damage_in_frame);
  50
  51   void SetDisplaySize(const gfx::Size& size);
  52
  53  protected:
  54   DelegatedRendererLayerImpl(LayerTreeImpl* tree_impl, int id);
  55
  56   int ChildIdForTesting() const { return child_id_; }
  57   const ScopedPtrVector<RenderPass>& RenderPassesInDrawOrderForTesting() const {
  58     return render_passes_in_draw_order_;
  59   }
  60   const ResourceProvider::ResourceIdArray& ResourcesForTesting() const {
  61     return resources_;
  62   }
  63
  64  private:
  65   void ClearChildId();
  66
  67   void AppendRainbowDebugBorder(QuadSink* quad_sink,
  68                                 AppendQuadsData* append_quads_data);
  69
  70   void SetRenderPasses(
  71       ScopedPtrVector<RenderPass>* render_passes_in_draw_order);
  72   void ClearRenderPasses();
  73
  74   // Returns |true| if the delegated_render_pass_id is part of the current
  75   // frame and can be converted.
  76   bool ConvertDelegatedRenderPassId(
  77       RenderPass::Id delegated_render_pass_id,
  78       RenderPass::Id* output_render_pass_id) const;
  79
  80   gfx::Transform DelegatedFrameToLayerSpaceTransform(
  81       const gfx::Size& frame_size) const;
  82
  83   void AppendRenderPassQuads(
  84       QuadSink* quad_sink,
  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   ScopedPtrVector<RenderPass> render_passes_in_draw_order_;
  94   base::hash_map<RenderPass::Id, int> render_passes_index_by_id_;
  95   ResourceProvider::ResourceIdArray resources_;
  96
  97   gfx::Size display_size_;
  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_