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// Copyright 2011 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_QUADS_RENDER_PASS_H_
#define CC_QUADS_RENDER_PASS_H_
#include <utility>
#include "base/basictypes.h"
#include "base/callback.h"
#include "base/containers/hash_tables.h"
#include "cc/base/cc_export.h"
#include "cc/base/scoped_ptr_vector.h"
#include "cc/quads/list_container.h"
#include "cc/quads/render_pass_id.h"
#include "skia/ext/refptr.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/rect_f.h"
#include "ui/gfx/transform.h"
namespace base {
namespace debug {
class TracedValue;
}
class Value;
};
namespace cc {
class DrawQuad;
class CopyOutputRequest;
class RenderPassDrawQuad;
class SharedQuadState;
// A list of DrawQuad objects, sorted internally in front-to-back order.
class QuadList : public ListContainer<DrawQuad> {
public:
explicit QuadList(size_t default_size_to_reserve);
typedef QuadList::ReverseIterator BackToFrontIterator;
typedef QuadList::ConstReverseIterator ConstBackToFrontIterator;
inline BackToFrontIterator BackToFrontBegin() { return rbegin(); }
inline BackToFrontIterator BackToFrontEnd() { return rend(); }
inline ConstBackToFrontIterator BackToFrontBegin() const { return rbegin(); }
inline ConstBackToFrontIterator BackToFrontEnd() const { return rend(); }
};
typedef ListContainer<SharedQuadState> SharedQuadStateList;
class CC_EXPORT RenderPass {
public:
~RenderPass();
static scoped_ptr<RenderPass> Create();
static scoped_ptr<RenderPass> Create(size_t num_layers);
static scoped_ptr<RenderPass> Create(size_t shared_quad_state_list_size,
size_t quad_list_size);
// A shallow copy of the render pass, which does not include its quads or copy
// requests.
scoped_ptr<RenderPass> Copy(RenderPassId new_id) const;
// A deep copy of the render passes in the list including the quads.
static void CopyAll(const ScopedPtrVector<RenderPass>& in,
ScopedPtrVector<RenderPass>* out);
void SetNew(RenderPassId id,
const gfx::Rect& output_rect,
const gfx::Rect& damage_rect,
const gfx::Transform& transform_to_root_target);
void SetAll(RenderPassId id,
const gfx::Rect& output_rect,
const gfx::Rect& damage_rect,
const gfx::Transform& transform_to_root_target,
bool has_transparent_background);
void AsValueInto(base::debug::TracedValue* dict) const;
SharedQuadState* CreateAndAppendSharedQuadState();
template <typename DrawQuadType>
DrawQuadType* CreateAndAppendDrawQuad() {
return quad_list.AllocateAndConstruct<DrawQuadType>();
}
RenderPassDrawQuad* CopyFromAndAppendRenderPassDrawQuad(
const RenderPassDrawQuad* quad,
const SharedQuadState* shared_quad_state,
RenderPassId render_pass_id);
DrawQuad* CopyFromAndAppendDrawQuad(const DrawQuad* quad,
const SharedQuadState* shared_quad_state);
// Uniquely identifies the render pass in the compositor's current frame.
RenderPassId id;
// These are in the space of the render pass' physical pixels.
gfx::Rect output_rect;
gfx::Rect damage_rect;
// Transforms from the origin of the |output_rect| to the origin of the root
// render pass' |output_rect|.
gfx::Transform transform_to_root_target;
// If false, the pixels in the render pass' texture are all opaque.
bool has_transparent_background;
// If non-empty, the renderer should produce a copy of the render pass'
// contents as a bitmap, and give a copy of the bitmap to each callback in
// this list. This property should not be serialized between compositors, as
// it only makes sense in the root compositor.
ScopedPtrVector<CopyOutputRequest> copy_requests;
QuadList quad_list;
SharedQuadStateList shared_quad_state_list;
protected:
explicit RenderPass(size_t num_layers);
RenderPass();
RenderPass(size_t shared_quad_state_list_size, size_t quad_list_size);
private:
template <typename DrawQuadType>
DrawQuadType* CopyFromAndAppendTypedDrawQuad(const DrawQuad* quad) {
return quad_list.AllocateAndCopyFrom(DrawQuadType::MaterialCast(quad));
}
DISALLOW_COPY_AND_ASSIGN(RenderPass);
};
} // namespace cc
namespace BASE_HASH_NAMESPACE {
#if defined(COMPILER_MSVC)
inline size_t hash_value(const cc::RenderPassId& key) {
return base::HashPair(key.layer_id, key.index);
}
#elif defined(COMPILER_GCC)
template <>
struct hash<cc::RenderPassId> {
size_t operator()(cc::RenderPassId key) const {
return base::HashPair(key.layer_id, key.index);
}
};
#else
#error define a hash function for your compiler
#endif // COMPILER
} // namespace BASE_HASH_NAMESPACE
namespace cc {
typedef ScopedPtrVector<RenderPass> RenderPassList;
typedef base::hash_map<RenderPassId, RenderPass*> RenderPassIdHashMap;
} // namespace cc
#endif // CC_QUADS_RENDER_PASS_H_
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