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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 GrGLSLPrimitiveProcessor_DEFINED | 8 #ifndef GrGLSLPrimitiveProcessor_DEFINED |
9 #define GrGLSLPrimitiveProcessor_DEFINED | 9 #define GrGLSLPrimitiveProcessor_DEFINED |
10 | 10 |
11 #include "GrFragmentProcessor.h" | |
12 #include "GrPrimitiveProcessor.h" | 11 #include "GrPrimitiveProcessor.h" |
13 #include "glsl/GrGLSLProgramDataManager.h" | 12 #include "glsl/GrGLSLProgramDataManager.h" |
14 #include "glsl/GrGLSLSampler.h" | 13 #include "glsl/GrGLSLSampler.h" |
15 | 14 |
16 class GrBatchTracker; | 15 class GrBatchTracker; |
17 class GrPrimitiveProcessor; | 16 class GrPrimitiveProcessor; |
18 class GrGLSLCaps; | 17 class GrGLSLCaps; |
19 class GrGLSLPPFragmentBuilder; | 18 class GrGLSLPPFragmentBuilder; |
20 class GrGLSLGPBuilder; | 19 class GrGLSLGPBuilder; |
21 class GrGLSLUniformHandler; | 20 class GrGLSLUniformHandler; |
22 class GrGLSLVaryingHandler; | 21 class GrGLSLVaryingHandler; |
23 class GrGLSLVertexBuilder; | 22 class GrGLSLVertexBuilder; |
24 | 23 |
25 class GrGLSLPrimitiveProcessor { | 24 class GrGLSLPrimitiveProcessor { |
26 public: | 25 public: |
27 using FPCoordTransformIter = GrFragmentProcessor::CoordTransformIter; | |
28 | |
29 virtual ~GrGLSLPrimitiveProcessor() {} | 26 virtual ~GrGLSLPrimitiveProcessor() {} |
30 | 27 |
31 typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; | 28 typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; |
32 typedef GrGLSLProgramDataManager::UniformHandle SamplerHandle; | 29 typedef GrGLSLProgramDataManager::UniformHandle SamplerHandle; |
33 | 30 |
34 /** | 31 typedef SkSTArray<2, const GrCoordTransform*, true> ProcCoords; |
35 * This class provides access to the GrCoordTransforms across all GrFragment
Processors in a | 32 typedef SkSTArray<8, ProcCoords> TransformsIn; |
36 * GrPipeline. It is also used by the primitive processor to specify the fra
gment shader | 33 typedef SkSTArray<8, SkTArray<GrShaderVar>> TransformsOut; |
37 * variable that will hold the transformed coords for each GrCoordTransform.
It is required that | |
38 * the primitive processor iterate over each coord transform and insert a sh
ader var result for | |
39 * each. The GrGLSLFragmentProcessors will reference these variables in thei
r fragment code. | |
40 */ | |
41 class FPCoordTransformHandler : public SkNoncopyable { | |
42 public: | |
43 FPCoordTransformHandler(const GrPipeline& pipeline, | |
44 SkTArray<GrShaderVar>* transformedCoordVars) | |
45 : fIter(pipeline) | |
46 , fTransformedCoordVars(transformedCoordVars) {} | |
47 | |
48 ~FPCoordTransformHandler() { SkASSERT(!this->nextCoordTransform());} | |
49 | |
50 const GrCoordTransform* nextCoordTransform(); | |
51 | |
52 // 'args' are constructor params to GrShaderVar. | |
53 template<typename... Args> | |
54 void specifyCoordsForCurrCoordTransform(Args&&... args) { | |
55 SkASSERT(!fAddedCoord); | |
56 fTransformedCoordVars->emplace_back(std::forward<Args>(args)...); | |
57 SkDEBUGCODE(fAddedCoord = true;) | |
58 } | |
59 | |
60 private: | |
61 GrFragmentProcessor::CoordTransformIter fIter; | |
62 SkDEBUGCODE(bool fAddedCoord = false;) | |
63 SkDEBUGCODE(const GrCoordTransform* fCurr = nullptr;) | |
64 SkTArray<GrShaderVar>* fTransformedCoordVars; | |
65 }; | |
66 | 34 |
67 struct EmitArgs { | 35 struct EmitArgs { |
68 EmitArgs(GrGLSLVertexBuilder* vertBuilder, | 36 EmitArgs(GrGLSLVertexBuilder* vertBuilder, |
69 GrGLSLPPFragmentBuilder* fragBuilder, | 37 GrGLSLPPFragmentBuilder* fragBuilder, |
70 GrGLSLVaryingHandler* varyingHandler, | 38 GrGLSLVaryingHandler* varyingHandler, |
71 GrGLSLUniformHandler* uniformHandler, | 39 GrGLSLUniformHandler* uniformHandler, |
72 const GrGLSLCaps* caps, | 40 const GrGLSLCaps* caps, |
73 const GrPrimitiveProcessor& gp, | 41 const GrPrimitiveProcessor& gp, |
74 const char* outputColor, | 42 const char* outputColor, |
75 const char* outputCoverage, | 43 const char* outputCoverage, |
76 const char* distanceVectorName, | 44 const char* distanceVectorName, |
77 const SamplerHandle* texSamplers, | 45 const SamplerHandle* texSamplers, |
78 const SamplerHandle* bufferSamplers, | 46 const SamplerHandle* bufferSamplers, |
79 FPCoordTransformHandler* transformHandler) | 47 const TransformsIn& transformsIn, |
| 48 TransformsOut* transformsOut) |
80 : fVertBuilder(vertBuilder) | 49 : fVertBuilder(vertBuilder) |
81 , fFragBuilder(fragBuilder) | 50 , fFragBuilder(fragBuilder) |
82 , fVaryingHandler(varyingHandler) | 51 , fVaryingHandler(varyingHandler) |
83 , fUniformHandler(uniformHandler) | 52 , fUniformHandler(uniformHandler) |
84 , fGLSLCaps(caps) | 53 , fGLSLCaps(caps) |
85 , fGP(gp) | 54 , fGP(gp) |
86 , fOutputColor(outputColor) | 55 , fOutputColor(outputColor) |
87 , fOutputCoverage(outputCoverage) | 56 , fOutputCoverage(outputCoverage) |
88 , fDistanceVectorName(distanceVectorName) | 57 , fDistanceVectorName(distanceVectorName) |
89 , fTexSamplers(texSamplers) | 58 , fTexSamplers(texSamplers) |
90 , fBufferSamplers(bufferSamplers) | 59 , fBufferSamplers(bufferSamplers) |
91 , fFPCoordTransformHandler(transformHandler) {} | 60 , fTransformsIn(transformsIn) |
| 61 , fTransformsOut(transformsOut) {} |
92 GrGLSLVertexBuilder* fVertBuilder; | 62 GrGLSLVertexBuilder* fVertBuilder; |
93 GrGLSLPPFragmentBuilder* fFragBuilder; | 63 GrGLSLPPFragmentBuilder* fFragBuilder; |
94 GrGLSLVaryingHandler* fVaryingHandler; | 64 GrGLSLVaryingHandler* fVaryingHandler; |
95 GrGLSLUniformHandler* fUniformHandler; | 65 GrGLSLUniformHandler* fUniformHandler; |
96 const GrGLSLCaps* fGLSLCaps; | 66 const GrGLSLCaps* fGLSLCaps; |
97 const GrPrimitiveProcessor& fGP; | 67 const GrPrimitiveProcessor& fGP; |
98 const char* fOutputColor; | 68 const char* fOutputColor; |
99 const char* fOutputCoverage; | 69 const char* fOutputCoverage; |
100 const char* fDistanceVectorName; | 70 const char* fDistanceVectorName; |
101 const SamplerHandle* fTexSamplers; | 71 const SamplerHandle* fTexSamplers; |
102 const SamplerHandle* fBufferSamplers; | 72 const SamplerHandle* fBufferSamplers; |
103 FPCoordTransformHandler* fFPCoordTransformHandler; | 73 const TransformsIn& fTransformsIn; |
| 74 TransformsOut* fTransformsOut; |
104 }; | 75 }; |
105 | 76 |
106 /** | 77 /** |
107 * This is similar to emitCode() in the base class, except it takes a full s
hader builder. | 78 * This is similar to emitCode() in the base class, except it takes a full s
hader builder. |
108 * This allows the effect subclass to emit vertex code. | 79 * This allows the effect subclass to emit vertex code. |
109 */ | 80 */ |
110 virtual void emitCode(EmitArgs&) = 0; | 81 virtual void emitCode(EmitArgs&) = 0; |
111 | 82 |
112 /** | 83 /** A GrGLSLPrimitiveProcessor instance can be reused with any GrGLSLPrimiti
veProcessor that |
113 * A GrGLSLPrimitiveProcessor instance can be reused with any GrGLSLPrimitiv
eProcessor that | 84 produces the same stage key; this function reads data from a GrGLSLPrimi
tiveProcessor and |
114 * produces the same stage key; this function reads data from a GrGLSLPrimit
iveProcessor and | 85 uploads any uniform variables required by the shaders created in emitCo
de(). The |
115 * uploads any uniform variables required by the shaders created in emitCod
e(). The | 86 GrPrimitiveProcessor parameter is guaranteed to be of the same type that
created this |
116 * GrPrimitiveProcessor parameter is guaranteed to be of the same type and t
o have an | 87 GrGLSLPrimitiveProcessor and to have an identical processor key as the o
ne that created this |
117 * identical processor key as the GrPrimitiveProcessor that created this | 88 GrGLSLPrimitiveProcessor. */ |
118 * GrGLSLPrimitiveProcessor. | 89 virtual void setData(const GrGLSLProgramDataManager&, const GrPrimitiveProce
ssor&) = 0; |
119 * The subclass may use the transform iterator to perform any setup required
for the particular | |
120 * set of fp transform matrices, such as uploading via uniforms. The iterato
r will iterate over | |
121 * the transforms in the same order as the TransformHandler passed to emitCo
de. | |
122 */ | |
123 virtual void setData(const GrGLSLProgramDataManager&, const GrPrimitiveProce
ssor&, | |
124 FPCoordTransformIter&&) = 0; | |
125 | 90 |
126 static SkMatrix GetTransformMatrix(const SkMatrix& localMatrix, const GrCoor
dTransform&); | 91 static SkMatrix GetTransformMatrix(const SkMatrix& localMatrix, const GrCoor
dTransform&); |
127 | 92 |
| 93 virtual void setTransformData(const GrPrimitiveProcessor&, |
| 94 const GrGLSLProgramDataManager& pdman, |
| 95 int index, |
| 96 const SkTArray<const GrCoordTransform*, true>&
transforms) = 0; |
| 97 |
128 protected: | 98 protected: |
129 void setupUniformColor(GrGLSLPPFragmentBuilder* fragBuilder, | 99 void setupUniformColor(GrGLSLPPFragmentBuilder* fragBuilder, |
130 GrGLSLUniformHandler* uniformHandler, | 100 GrGLSLUniformHandler* uniformHandler, |
131 const char* outputName, | 101 const char* outputName, |
132 UniformHandle* colorUniform); | 102 UniformHandle* colorUniform); |
133 }; | 103 }; |
134 | 104 |
135 #endif | 105 #endif |
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