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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 GrGLGeometryProcessor_DEFINED | 8 #ifndef GrGLGeometryProcessor_DEFINED |
9 #define GrGLGeometryProcessor_DEFINED | 9 #define GrGLGeometryProcessor_DEFINED |
10 | 10 |
11 #include "GrGLPrimitiveProcessor.h" | 11 #include "GrGLPrimitiveProcessor.h" |
12 | 12 |
13 class GrGLGPBuilder; | 13 class GrGLGPBuilder; |
14 | 14 |
15 /** | 15 /** |
16 * If a GL effect needs a GrGLFullShaderBuilder* object to emit vertex code, the
n it must inherit | 16 * If a GL effect needs a GrGLFullShaderBuilder* object to emit vertex code, the
n it must inherit |
17 * from this class. Since paths don't have vertices, this class is only meant to
be used internally | 17 * from this class. Since paths don't have vertices, this class is only meant to
be used internally |
18 * by skia, for special cases. | 18 * by skia, for special cases. |
19 */ | 19 */ |
20 class GrGLGeometryProcessor : public GrGLPrimitiveProcessor { | 20 class GrGLGeometryProcessor : public GrGLPrimitiveProcessor { |
21 public: | 21 public: |
22 /* Any general emit code goes in the base class emitCode. Subclasses overri
de onEmitCode */ | 22 /* Any general emit code goes in the base class emitCode. Subclasses overri
de onEmitCode */ |
23 void emitCode(EmitArgs&) override; | 23 void emitCode(EmitArgs&) override; |
24 | 24 |
25 void setTransformData(const GrPrimitiveProcessor&, | 25 // By default we use the identity matrix |
26 const GrGLProgramDataManager&, | 26 virtual void setTransformData(const GrPrimitiveProcessor&, |
27 int index, | 27 const GrGLProgramDataManager& pdman, |
28 const SkTArray<const GrCoordTransform*, true>& transfo
rms); | 28 int index, |
| 29 const SkTArray<const GrCoordTransform*, true>&
transforms) { |
| 30 this->setTransformDataMatrix(SkMatrix::I(), pdman, index, transforms); |
| 31 } |
| 32 |
| 33 // A helper which subclasses can use if needed |
| 34 template <class GeometryProcessor> |
| 35 void setTransformDataHelper(const GrPrimitiveProcessor& primProc, |
| 36 const GrGLProgramDataManager& pdman, |
| 37 int index, |
| 38 const SkTArray<const GrCoordTransform*, true>& t
ransforms) { |
| 39 const GeometryProcessor& gp = primProc.cast<GeometryProcessor>(); |
| 40 this->setTransformDataMatrix(gp.localMatrix(), pdman, index, transforms)
; |
| 41 } |
29 | 42 |
30 protected: | 43 protected: |
31 // Many GrGeometryProcessors do not need explicit local coords | 44 // A helper for subclasses which don't have an explicit local matrix |
32 void emitTransforms(GrGLGPBuilder* gp, | 45 void emitTransforms(GrGLGPBuilder* gp, |
33 const GrShaderVar& posVar, | 46 const GrShaderVar& posVar, |
34 const SkMatrix& localMatrix, | 47 const char* localCoords, |
35 const TransformsIn& tin, | 48 const TransformsIn& tin, |
36 TransformsOut* tout) { | 49 TransformsOut* tout) { |
37 this->emitTransforms(gp, posVar, posVar.c_str(), localMatrix, tin, tout)
; | 50 this->emitTransforms(gp, posVar, localCoords, SkMatrix::I(), tin, tout); |
38 } | 51 } |
39 | 52 |
40 void emitTransforms(GrGLGPBuilder*, | 53 void emitTransforms(GrGLGPBuilder*, |
41 const GrShaderVar& posVar, | 54 const GrShaderVar& posVar, |
42 const char* localCoords, | 55 const char* localCoords, |
43 const SkMatrix& localMatrix, | 56 const SkMatrix& localMatrix, |
44 const TransformsIn&, | 57 const TransformsIn&, |
45 TransformsOut*); | 58 TransformsOut*); |
46 | 59 |
47 struct GrGPArgs { | 60 struct GrGPArgs { |
(...skipping 12 matching lines...) Expand all Loading... |
60 if (mat.isIdentity()) { | 73 if (mat.isIdentity()) { |
61 return 0x0; | 74 return 0x0; |
62 } else if (!mat.hasPerspective()) { | 75 } else if (!mat.hasPerspective()) { |
63 return 0x01; | 76 return 0x01; |
64 } else { | 77 } else { |
65 return 0x02; | 78 return 0x02; |
66 } | 79 } |
67 } | 80 } |
68 | 81 |
69 private: | 82 private: |
| 83 void setTransformDataMatrix(const SkMatrix& localMatrix, |
| 84 const GrGLProgramDataManager& pdman, |
| 85 int index, |
| 86 const SkTArray<const GrCoordTransform*, true>& t
ransforms) { |
| 87 SkSTArray<2, Transform, true>& procTransforms = fInstalledTransforms[ind
ex]; |
| 88 int numTransforms = transforms.count(); |
| 89 for (int t = 0; t < numTransforms; ++t) { |
| 90 SkASSERT(procTransforms[t].fHandle.isValid()); |
| 91 const SkMatrix& transform = GetTransformMatrix(localMatrix, *transfo
rms[t]); |
| 92 if (!procTransforms[t].fCurrentValue.cheapEqualTo(transform)) { |
| 93 pdman.setSkMatrix(procTransforms[t].fHandle.convertToUniformHand
le(), transform); |
| 94 procTransforms[t].fCurrentValue = transform; |
| 95 } |
| 96 } |
| 97 } |
| 98 |
70 virtual void onEmitCode(EmitArgs&, GrGPArgs*) = 0; | 99 virtual void onEmitCode(EmitArgs&, GrGPArgs*) = 0; |
71 | 100 |
72 typedef GrGLPrimitiveProcessor INHERITED; | 101 typedef GrGLPrimitiveProcessor INHERITED; |
73 }; | 102 }; |
74 | 103 |
75 #endif | 104 #endif |
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