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// 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_SURFACES_SURFACE_AGGREGATOR_H_
#define CC_SURFACES_SURFACE_AGGREGATOR_H_
#include <set>
#include "base/containers/hash_tables.h"
#include "base/containers/scoped_ptr_hash_map.h"
#include "base/memory/scoped_ptr.h"
#include "cc/quads/render_pass.h"
#include "cc/resources/transferable_resource.h"
#include "cc/surfaces/surface_id.h"
#include "cc/surfaces/surfaces_export.h"
namespace cc {
class CompositorFrame;
class DelegatedFrameData;
class ResourceProvider;
class Surface;
class SurfaceDrawQuad;
class SurfaceManager;
class CC_SURFACES_EXPORT SurfaceAggregator {
public:
SurfaceAggregator(SurfaceManager* manager, ResourceProvider* provider);
~SurfaceAggregator();
scoped_ptr<CompositorFrame> Aggregate(
SurfaceId surface_id,
std::set<SurfaceId>* contained_surfaces);
private:
RenderPass::Id RemapPassId(RenderPass::Id surface_local_pass_id,
SurfaceId surface_id);
void HandleSurfaceQuad(const SurfaceDrawQuad* surface_quad,
RenderPass* dest_pass);
void CopySharedQuadState(const SharedQuadState* source_sqs,
const gfx::Transform& content_to_target_transform,
RenderPass* dest_render_pass);
void CopyQuadsToPass(const QuadList& source_quad_list,
const SharedQuadStateList& source_shared_quad_state_list,
const gfx::Transform& content_to_target_transform,
RenderPass* dest_pass,
SurfaceId surface_id);
void CopyPasses(const RenderPassList& source_pass_list, SurfaceId surface_id);
bool TakeResources(Surface* surface,
const DelegatedFrameData* frame_data,
RenderPassList* render_pass_list);
int ChildIdForSurface(Surface* surface);
SurfaceManager* manager_;
ResourceProvider* provider_;
class RenderPassIdAllocator;
typedef base::ScopedPtrHashMap<SurfaceId, RenderPassIdAllocator>
RenderPassIdAllocatorMap;
RenderPassIdAllocatorMap render_pass_allocator_map_;
typedef base::hash_map<SurfaceId, int> SurfaceToResourceChildIdMap;
SurfaceToResourceChildIdMap surface_id_to_resource_child_id_;
// The following state is only valid for the duration of one Aggregate call
// and is only stored on the class to avoid having to pass through every
// function call.
// This is the set of surfaces referenced in the aggregation so far, used to
// detect cycles.
typedef std::set<SurfaceId> SurfaceSet;
SurfaceSet referenced_surfaces_;
// This is the set of surfaces that were used in the last draw.
SurfaceSet* contained_surfaces_;
// This is the pass list for the aggregated frame.
RenderPassList* dest_pass_list_;
// Resource list for the aggregated frame.
TransferableResourceArray* dest_resource_list_;
DISALLOW_COPY_AND_ASSIGN(SurfaceAggregator);
};
} // namespace cc
#endif // CC_SURFACES_SURFACE_AGGREGATOR_H_
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