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1 /* | 1 /* |
2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef GrClip_DEFINED | 8 #ifndef GrClip_DEFINED |
9 #define GrClip_DEFINED | 9 #define GrClip_DEFINED |
10 | 10 |
11 #include "GrFragmentProcessor.h" | 11 #include "GrFragmentProcessor.h" |
12 #include "GrTypesPriv.h" | 12 #include "GrTypesPriv.h" |
13 #include "SkClipStack.h" | 13 #include "SkClipStack.h" |
14 | 14 |
15 class GrClipMaskManager; | 15 class GrDrawContext; |
16 class GrPipelineBuilder; | 16 class GrPipelineBuilder; |
17 | 17 |
18 /** | 18 /** |
19 * Produced by GrClip. It provides a set of modifications to the drawing state t
hat are used to | 19 * Produced by GrClip. It provides a set of modifications to the drawing state t
hat are used to |
20 * create the final GrPipeline for a GrBatch. | 20 * create the final GrPipeline for a GrBatch. |
21 */ | 21 */ |
22 class GrAppliedClip : public SkNoncopyable { | 22 class GrAppliedClip : public SkNoncopyable { |
23 public: | 23 public: |
24 GrAppliedClip() : fHasStencilClip(false) {} | 24 GrAppliedClip() : fHasStencilClip(false) {} |
25 const GrFragmentProcessor* clipCoverageFragmentProcessor() const { | 25 const GrFragmentProcessor* clipCoverageFragmentProcessor() const { |
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62 | 62 |
63 /** | 63 /** |
64 * GrClip is an abstract base class for applying a clip. It constructs a clip ma
sk if necessary, and | 64 * GrClip is an abstract base class for applying a clip. It constructs a clip ma
sk if necessary, and |
65 * fills out a GrAppliedClip instructing the caller on how to set up the draw st
ate. | 65 * fills out a GrAppliedClip instructing the caller on how to set up the draw st
ate. |
66 */ | 66 */ |
67 class GrClip { | 67 class GrClip { |
68 public: | 68 public: |
69 virtual bool quickContains(const SkRect&) const = 0; | 69 virtual bool quickContains(const SkRect&) const = 0; |
70 virtual void getConservativeBounds(int width, int height, SkIRect* devResult
, | 70 virtual void getConservativeBounds(int width, int height, SkIRect* devResult
, |
71 bool* isIntersectionOfRects = nullptr) co
nst = 0; | 71 bool* isIntersectionOfRects = nullptr) co
nst = 0; |
72 virtual bool apply(GrClipMaskManager*, const GrPipelineBuilder&, const SkRec
t* devBounds, | 72 virtual bool apply(GrContext*, const GrPipelineBuilder&, GrDrawContext*, |
73 GrAppliedClip*) const = 0; | 73 const SkRect* devBounds, GrAppliedClip*) const = 0; |
74 | 74 |
75 virtual ~GrClip() {} | 75 virtual ~GrClip() {} |
76 }; | 76 }; |
77 | 77 |
78 /** | 78 /** |
79 * Specialized implementation for no clip. | 79 * Specialized implementation for no clip. |
80 */ | 80 */ |
81 class GrNoClip final : public GrClip { | 81 class GrNoClip final : public GrClip { |
82 private: | 82 private: |
83 bool quickContains(const SkRect&) const final { return true; } | 83 bool quickContains(const SkRect&) const final { return true; } |
84 void getConservativeBounds(int width, int height, SkIRect* devResult, | 84 void getConservativeBounds(int width, int height, SkIRect* devResult, |
85 bool* isIntersectionOfRects) const final; | 85 bool* isIntersectionOfRects) const final; |
86 bool apply(GrClipMaskManager*, const GrPipelineBuilder&, | 86 bool apply(GrContext*, const GrPipelineBuilder&, GrDrawContext*, |
87 const SkRect*, GrAppliedClip*) const final { return true; } | 87 const SkRect*, GrAppliedClip*) const final { return true; } |
88 }; | 88 }; |
89 | 89 |
90 /** | 90 /** |
91 * GrFixedClip is a clip that can be represented by fixed-function hardware. It
never modifies the | 91 * GrFixedClip is a clip that can be represented by fixed-function hardware. It
never modifies the |
92 * stencil buffer itself, but can be configured to use whatever clip is already
there. | 92 * stencil buffer itself, but can be configured to use whatever clip is already
there. |
93 */ | 93 */ |
94 class GrFixedClip final : public GrClip { | 94 class GrFixedClip final : public GrClip { |
95 public: | 95 public: |
96 GrFixedClip() : fHasStencilClip(false) {} | 96 GrFixedClip() : fHasStencilClip(false) {} |
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109 void enableStencilClip(bool enable) { fHasStencilClip = enable; } | 109 void enableStencilClip(bool enable) { fHasStencilClip = enable; } |
110 | 110 |
111 const GrScissorState& scissorState() const { return fScissorState; } | 111 const GrScissorState& scissorState() const { return fScissorState; } |
112 bool hasStencilClip() const { return fHasStencilClip; } | 112 bool hasStencilClip() const { return fHasStencilClip; } |
113 | 113 |
114 bool quickContains(const SkRect&) const final; | 114 bool quickContains(const SkRect&) const final; |
115 void getConservativeBounds(int width, int height, SkIRect* devResult, | 115 void getConservativeBounds(int width, int height, SkIRect* devResult, |
116 bool* isIntersectionOfRects) const final; | 116 bool* isIntersectionOfRects) const final; |
117 | 117 |
118 private: | 118 private: |
119 bool apply(GrClipMaskManager*, const GrPipelineBuilder&, | 119 bool apply(GrContext*, const GrPipelineBuilder&, GrDrawContext*, |
120 const SkRect* devBounds, GrAppliedClip* out) const final; | 120 const SkRect* devBounds, GrAppliedClip* out) const final; |
121 | 121 |
122 GrScissorState fScissorState; | 122 GrScissorState fScissorState; |
123 bool fHasStencilClip; | 123 bool fHasStencilClip; |
124 }; | 124 }; |
125 | 125 |
126 /** | 126 /** |
127 * GrClipStackClip can apply a generic SkClipStack to the draw state. It may gen
erate clip masks or | 127 * GrClipStackClip can apply a generic SkClipStack to the draw state. It may gen
erate clip masks or |
128 * write to the stencil buffer during apply(). | 128 * write to the stencil buffer during apply(). |
129 */ | 129 */ |
130 class GrClipStackClip final : public GrClip { | 130 class GrClipStackClip final : public GrClip { |
131 public: | 131 public: |
132 GrClipStackClip(const SkClipStack* stack = nullptr, const SkIPoint* origin =
nullptr) { | 132 GrClipStackClip(const SkClipStack* stack = nullptr, const SkIPoint* origin =
nullptr) { |
133 this->reset(stack, origin); | 133 this->reset(stack, origin); |
134 } | 134 } |
135 | 135 |
136 void reset(const SkClipStack* stack = nullptr, const SkIPoint* origin = null
ptr) { | 136 void reset(const SkClipStack* stack = nullptr, const SkIPoint* origin = null
ptr) { |
137 fOrigin = origin ? *origin : SkIPoint::Make(0, 0); | 137 fOrigin = origin ? *origin : SkIPoint::Make(0, 0); |
138 fStack.reset(SkSafeRef(stack)); | 138 fStack.reset(SkSafeRef(stack)); |
139 } | 139 } |
140 | 140 |
141 const SkIPoint& origin() const { return fOrigin; } | 141 const SkIPoint& origin() const { return fOrigin; } |
142 const SkClipStack* clipStack() const { return fStack; } | 142 const SkClipStack* clipStack() const { return fStack; } |
143 | 143 |
144 bool quickContains(const SkRect&) const final; | 144 bool quickContains(const SkRect&) const final; |
145 void getConservativeBounds(int width, int height, SkIRect* devResult, | 145 void getConservativeBounds(int width, int height, SkIRect* devResult, |
146 bool* isIntersectionOfRects) const final; | 146 bool* isIntersectionOfRects) const final; |
147 bool apply(GrClipMaskManager*, const GrPipelineBuilder&, | 147 bool apply(GrContext*, const GrPipelineBuilder&, GrDrawContext*, |
148 const SkRect* devBounds, GrAppliedClip*) const final; | 148 const SkRect* devBounds, GrAppliedClip*) const final; |
149 | 149 |
150 private: | 150 private: |
151 SkIPoint fOrigin; | 151 SkIPoint fOrigin; |
152 SkAutoTUnref<const SkClipStack> fStack; | 152 SkAutoTUnref<const SkClipStack> fStack; |
153 }; | 153 }; |
154 | 154 |
155 #endif | 155 #endif |
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