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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 CCRenderPass_h
#define CCRenderPass_h
#include "base/basictypes.h"
#include "cc/draw_quad.h"
#include "cc/hash_pair.h"
#include "cc/scoped_ptr_hash_map.h"
#include "cc/scoped_ptr_vector.h"
#include "cc/shared_quad_state.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/gfx/rect_f.h"
#include <public/WebFilterOperations.h>
#include <public/WebTransformationMatrix.h>
#include <vector>
class SkImageFilter;
namespace cc {
class LayerImpl;
template<typename LayerType, typename SurfaceType>
class OcclusionTrackerBase;
class RenderSurfaceImpl;
struct AppendQuadsData;
typedef OcclusionTrackerBase<LayerImpl, RenderSurfaceImpl> OcclusionTrackerImpl;
// A list of DrawQuad objects, sorted internally in front-to-back order.
class QuadList : public ScopedPtrVector<DrawQuad> {
public:
typedef reverse_iterator backToFrontIterator;
typedef const_reverse_iterator constBackToFrontIterator;
inline backToFrontIterator backToFrontBegin() { return rbegin(); }
inline backToFrontIterator backToFrontEnd() { return rend(); }
inline constBackToFrontIterator backToFrontBegin() const { return rbegin(); }
inline constBackToFrontIterator backToFrontEnd() const { return rend(); }
};
typedef ScopedPtrVector<SharedQuadState> SharedQuadStateList;
class RenderPass {
public:
~RenderPass();
struct Id {
int layerId;
int index;
Id(int layerId, int index)
: layerId(layerId)
, index(index)
{
}
bool operator==(const Id& other) const { return layerId == other.layerId && index == other.index; }
bool operator!=(const Id& other) const { return !(*this == other); }
bool operator<(const Id& other) const { return layerId < other.layerId || (layerId == other.layerId && index < other.index); }
};
static scoped_ptr<RenderPass> create(Id, gfx::Rect outputRect, const WebKit::WebTransformationMatrix& transformToRootTarget);
// A shallow copy of the render pass, which does not include its quads.
scoped_ptr<RenderPass> copy(Id newId) const;
void appendQuadsForLayer(LayerImpl*, OcclusionTrackerImpl*, AppendQuadsData&);
void appendQuadsForRenderSurfaceLayer(LayerImpl*, const RenderPass* contributingRenderPass, OcclusionTrackerImpl*, AppendQuadsData&);
void appendQuadsToFillScreen(LayerImpl* rootLayer, SkColor screenBackgroundColor, const OcclusionTrackerImpl&);
const QuadList& quadList() const { return m_quadList; }
Id id() const { return m_id; }
// FIXME: Modify this transform when merging the RenderPass into a parent compositor.
// Transforms from quad's original content space to the root target's content space.
const WebKit::WebTransformationMatrix& transformToRootTarget() const { return m_transformToRootTarget; }
// This denotes the bounds in physical pixels of the output generated by this RenderPass.
const gfx::Rect& outputRect() const { return m_outputRect; }
gfx::RectF damageRect() const { return m_damageRect; }
void setDamageRect(gfx::RectF rect) { m_damageRect = rect; }
const WebKit::WebFilterOperations& filters() const { return m_filters; }
void setFilters(const WebKit::WebFilterOperations& filters) { m_filters = filters; }
const WebKit::WebFilterOperations& backgroundFilters() const { return m_backgroundFilters; }
void setBackgroundFilters(const WebKit::WebFilterOperations& filters) { m_backgroundFilters = filters; }
SkImageFilter* filter() const { return m_filter; }
void setFilter(SkImageFilter* filter);
bool hasTransparentBackground() const { return m_hasTransparentBackground; }
void setHasTransparentBackground(bool transparent) { m_hasTransparentBackground = transparent; }
bool hasOcclusionFromOutsideTargetSurface() const { return m_hasOcclusionFromOutsideTargetSurface; }
void setHasOcclusionFromOutsideTargetSurface(bool hasOcclusionFromOutsideTargetSurface) { m_hasOcclusionFromOutsideTargetSurface = hasOcclusionFromOutsideTargetSurface; }
protected:
RenderPass(Id, gfx::Rect outputRect, const WebKit::WebTransformationMatrix& transformToRootTarget);
Id m_id;
QuadList m_quadList;
SharedQuadStateList m_sharedQuadStateList;
WebKit::WebTransformationMatrix m_transformToRootTarget;
gfx::Rect m_outputRect;
gfx::RectF m_damageRect;
bool m_hasTransparentBackground;
bool m_hasOcclusionFromOutsideTargetSurface;
WebKit::WebFilterOperations m_filters;
WebKit::WebFilterOperations m_backgroundFilters;
SkImageFilter* m_filter;
DISALLOW_COPY_AND_ASSIGN(RenderPass);
};
} // namespace cc
namespace BASE_HASH_NAMESPACE {
#if defined(COMPILER_MSVC)
template<>
inline size_t hash_value<cc::RenderPass::Id>(const cc::RenderPass::Id& key) {
return hash_value<std::pair<int, int> >(std::pair<int, int>(key.layerId, key.index));
}
#elif defined(COMPILER_GCC)
template<>
struct hash<cc::RenderPass::Id> {
size_t operator()(cc::RenderPass::Id key) const {
return hash<std::pair<int, int> >()(std::pair<int, int>(key.layerId, key.index));
}
};
#else
#error define a hash function for your compiler
#endif // COMPILER
}
namespace cc {
typedef std::vector<RenderPass*> RenderPassList;
typedef ScopedPtrHashMap<RenderPass::Id, RenderPass> RenderPassIdHashMap;
} // namespace cc
#endif
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