WIP: Surface Synchronization System

cc/layers/surface_layer_impl.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_LAYERS_SURFACE_LAYER_IMPL_H_
 #define CC_LAYERS_SURFACE_LAYER_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer_impl.h"
+#include "cc/quads/surface_draw_quad.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_info.h"
 
 namespace cc {
 
 class CC_EXPORT SurfaceLayerImpl : public LayerImpl {
  public:
   static std::unique_ptr<SurfaceLayerImpl> Create(LayerTreeImpl* tree_impl,
                                                   int id) {
     return base::WrapUnique(new SurfaceLayerImpl(tree_impl, id));
   }
   ~SurfaceLayerImpl() override;
 
-  void SetSurfaceInfo(const SurfaceInfo& surface_info);
-  const SurfaceInfo& surface_info() const { return surface_info_; }
+  void SetPrimarySurfaceInfo(const SurfaceInfo& surface_info);
+  const SurfaceInfo& primary_surface_info() const {
+    return primary_surface_info_;
+  }
+
+  void SetFallbackSurfaceInfo(const SurfaceInfo& surface_info);
+  const SurfaceInfo& fallback_surface_info() const {
+    return fallback_surface_info_;
+  }
+
   void SetStretchContentToFillBounds(bool stretch_content);
 
   // LayerImpl overrides.
   std::unique_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
   void PushPropertiesTo(LayerImpl* layer) override;
   void AppendQuads(RenderPass* render_pass,
                    AppendQuadsData* append_quads_data) override;
 
  protected:
   SurfaceLayerImpl(LayerTreeImpl* tree_impl, int id);
 
  private:
+  void PopulateSurfaceDrawQuad(RenderPass* render_pass,
+                               SurfaceDrawQuad* surface_draw_quad,
+                               SurfaceDrawQuad* fallback_surface_draw_quad,
+                               SurfaceDrawQuadType surface_draw_quad_type,
+                               const SurfaceInfo& surface_info);
+
   void GetDebugBorderProperties(SkColor* color, float* width) const override;
   void AppendRainbowDebugBorder(RenderPass* render_pass);
   void AsValueInto(base::trace_event::TracedValue* dict) const override;
   const char* LayerTypeAsString() const override;
 
-  SurfaceInfo surface_info_;
+  SurfaceInfo primary_surface_info_;
+  SurfaceInfo fallback_surface_info_;
+
   bool stretch_content_to_fill_bounds_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(SurfaceLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_SURFACE_LAYER_IMPL_H_