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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 GrFragmentProcessor_DEFINED | 8 #ifndef GrFragmentProcessor_DEFINED |
9 #define GrFragmentProcessor_DEFINED | 9 #define GrFragmentProcessor_DEFINED |
10 | 10 |
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58 * series. The original input is passed to the first, the first's output is
passed to the | 58 * series. The original input is passed to the first, the first's output is
passed to the |
59 * second, etc. The output of the returned processor is the output of the la
st processor of the | 59 * second, etc. The output of the returned processor is the output of the la
st processor of the |
60 * series. | 60 * series. |
61 * | 61 * |
62 * The array elements with be moved. | 62 * The array elements with be moved. |
63 */ | 63 */ |
64 static sk_sp<GrFragmentProcessor> RunInSeries(sk_sp<GrFragmentProcessor>*, i
nt cnt); | 64 static sk_sp<GrFragmentProcessor> RunInSeries(sk_sp<GrFragmentProcessor>*, i
nt cnt); |
65 | 65 |
66 GrFragmentProcessor() | 66 GrFragmentProcessor() |
67 : INHERITED() | 67 : INHERITED() |
68 , fUsesDistanceVectorField(false) | |
69 , fUsesLocalCoords(false) | 68 , fUsesLocalCoords(false) |
70 , fNumTexturesExclChildren(0) | 69 , fNumTexturesExclChildren(0) |
71 , fNumBuffersExclChildren(0) | 70 , fNumBuffersExclChildren(0) |
72 , fNumTransformsExclChildren(0) {} | 71 , fNumTransformsExclChildren(0) {} |
73 | 72 |
74 ~GrFragmentProcessor() override; | 73 ~GrFragmentProcessor() override; |
75 | 74 |
76 GrGLSLFragmentProcessor* createGLSLInstance() const; | 75 GrGLSLFragmentProcessor* createGLSLInstance() const; |
77 | 76 |
78 void getGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) c
onst { | 77 void getGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) c
onst { |
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104 } | 103 } |
105 } | 104 } |
106 | 105 |
107 int numChildProcessors() const { return fChildProcessors.count(); } | 106 int numChildProcessors() const { return fChildProcessors.count(); } |
108 | 107 |
109 const GrFragmentProcessor& childProcessor(int index) const { return *fChildP
rocessors[index]; } | 108 const GrFragmentProcessor& childProcessor(int index) const { return *fChildP
rocessors[index]; } |
110 | 109 |
111 /** Do any of the coordtransforms for this processor require local coords? *
/ | 110 /** Do any of the coordtransforms for this processor require local coords? *
/ |
112 bool usesLocalCoords() const { return fUsesLocalCoords; } | 111 bool usesLocalCoords() const { return fUsesLocalCoords; } |
113 | 112 |
114 /** Does this FP need a vector to the nearest edge? */ | |
115 bool usesDistanceVectorField() const { return fUsesDistanceVectorField; } | |
116 | |
117 /** Returns true if this and other processor conservatively draw identically
. It can only return | 113 /** Returns true if this and other processor conservatively draw identically
. It can only return |
118 true when the two processor are of the same subclass (i.e. they return t
he same object from | 114 true when the two processor are of the same subclass (i.e. they return t
he same object from |
119 from getFactory()). | 115 from getFactory()). |
120 | 116 |
121 A return value of true from isEqual() should not be used to test whether
the processor would | 117 A return value of true from isEqual() should not be used to test whether
the processor would |
122 generate the same shader code. To test for identical code generation use
getGLSLProcessorKey | 118 generate the same shader code. To test for identical code generation use
getGLSLProcessorKey |
123 */ | 119 */ |
124 bool isEqual(const GrFragmentProcessor& that, bool ignoreCoordTransforms) co
nst; | 120 bool isEqual(const GrFragmentProcessor& that, bool ignoreCoordTransforms) co
nst; |
125 | 121 |
126 /** | 122 /** |
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170 int registerChildProcessor(sk_sp<GrFragmentProcessor> child); | 166 int registerChildProcessor(sk_sp<GrFragmentProcessor> child); |
171 | 167 |
172 /** | 168 /** |
173 * Subclass implements this to support getConstantColorComponents(...). | 169 * Subclass implements this to support getConstantColorComponents(...). |
174 * | 170 * |
175 * Note: it's up to the subclass implementation to do any recursive call to
compute the child | 171 * Note: it's up to the subclass implementation to do any recursive call to
compute the child |
176 * procs' output invariants; computeInvariantOutput will not be recursive. | 172 * procs' output invariants; computeInvariantOutput will not be recursive. |
177 */ | 173 */ |
178 virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const = 0; | 174 virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const = 0; |
179 | 175 |
180 /* Sub-classes should set this to true in their constructors if they need ac
cess to a distance | |
181 * vector field to the nearest edge | |
182 */ | |
183 bool fUsesDistanceVectorField; | |
184 | |
185 private: | 176 private: |
186 void notifyRefCntIsZero() const final; | 177 void notifyRefCntIsZero() const final; |
187 | 178 |
188 /** Returns a new instance of the appropriate *GL* implementation class | 179 /** Returns a new instance of the appropriate *GL* implementation class |
189 for the given GrFragmentProcessor; caller is responsible for deleting | 180 for the given GrFragmentProcessor; caller is responsible for deleting |
190 the object. */ | 181 the object. */ |
191 virtual GrGLSLFragmentProcessor* onCreateGLSLInstance() const = 0; | 182 virtual GrGLSLFragmentProcessor* onCreateGLSLInstance() const = 0; |
192 | 183 |
193 /** Implemented using GLFragmentProcessor::GenKey as described in this class
's comment. */ | 184 /** Implemented using GLFragmentProcessor::GenKey as described in this class
's comment. */ |
194 virtual void onGetGLSLProcessorKey(const GrGLSLCaps& caps, | 185 virtual void onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
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237 /** | 228 /** |
238 * This is not SkSTArray<1, sk_sp<GrFragmentProcessor>> because this class h
olds strong | 229 * This is not SkSTArray<1, sk_sp<GrFragmentProcessor>> because this class h
olds strong |
239 * references until notifyRefCntIsZero and then it holds pending executions. | 230 * references until notifyRefCntIsZero and then it holds pending executions. |
240 */ | 231 */ |
241 SkSTArray<1, GrFragmentProcessor*, true> fChildProcessors; | 232 SkSTArray<1, GrFragmentProcessor*, true> fChildProcessors; |
242 | 233 |
243 typedef GrProcessor INHERITED; | 234 typedef GrProcessor INHERITED; |
244 }; | 235 }; |
245 | 236 |
246 #endif | 237 #endif |
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