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Side by Side Diff: src/gpu/gl/GrGLProcessor.h

Issue 778453002: Remove backend factories (Closed) Base URL: https://skia.googlesource.com/skia.git@unichoice
Patch Set: more clang warnings Created 6 years ago
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1 /* 1 /*
2 * Copyright 2012 Google Inc. 2 * Copyright 2012 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 GrGLProcessor_DEFINED 8 #ifndef GrGLProcessor_DEFINED
9 #define GrGLProcessor_DEFINED 9 #define GrGLProcessor_DEFINED
10 10
11 #include "GrBackendProcessorFactory.h"
12 #include "GrGLProgramDataManager.h" 11 #include "GrGLProgramDataManager.h"
12 #include "GrProcessor.h"
13 #include "GrTextureAccess.h" 13 #include "GrTextureAccess.h"
14 14
15 /** @file 15 /** @file
16 This file contains specializations for OpenGL of the shader stages declared in 16 This file contains specializations for OpenGL of the shader stages declared in
17 include/gpu/GrProcessor.h. Objects of type GrGLProcessor are responsible for emitting the 17 include/gpu/GrProcessor.h. Objects of type GrGLProcessor are responsible for emitting the
18 GLSL code that implements a GrProcessor and for uploading uniforms at draw t ime. If they don't 18 GLSL code that implements a GrProcessor and for uploading uniforms at draw t ime. If they don't
19 always emit the same GLSL code, they must have a function: 19 always emit the same GLSL code, they must have a function:
20 static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcess orKeyBuilder*) 20 static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcess orKeyBuilder*)
21 that is used to implement a program cache. When two GrProcessors produce the same key this means 21 that is used to implement a program cache. When two GrProcessors produce the same key this means
22 that their GrGLProcessors would emit the same GLSL code. 22 that their GrGLProcessors would emit the same GLSL code.
23 23
24 The GrGLProcessor subclass must also have a constructor of the form: 24 The GrGLProcessor subclass must also have a constructor of the form:
25 ProcessorSubclass::ProcessorSubclass(const GrBackendProcessorFactory&, c onst GrProcessor&) 25 ProcessorSubclass::ProcessorSubclass(const GrBackendProcessorFactory&, c onst GrProcessor&)
26 26
27 These objects are created by the factory object returned by the GrProcessor: :getFactory(). 27 These objects are created by the factory object returned by the GrProcessor: :getFactory().
28 */ 28 */
29 29 // TODO delete this and make TextureSampler its own thing
30 class GrGLProcessor { 30 class GrGLProcessor {
31 public: 31 public:
32 GrGLProcessor(const GrBackendProcessorFactory& factory)
33 : fFactory(factory) {
34 }
35
36 typedef GrGLProgramDataManager::UniformHandle UniformHandle; 32 typedef GrGLProgramDataManager::UniformHandle UniformHandle;
37 33
38 /** 34 /**
39 * Passed to GrGLProcessors so they can add transformed coordinates to their shader code. 35 * Passed to GrGLProcessors so they can add transformed coordinates to their shader code.
40 */ 36 */
41 typedef GrShaderVar TransformedCoords; 37 typedef GrShaderVar TransformedCoords;
42 typedef SkTArray<GrShaderVar> TransformedCoordsArray; 38 typedef SkTArray<GrShaderVar> TransformedCoordsArray;
43 39
44 /** 40 /**
45 * Passed to GrGLProcessors so they can add texture reads to their shader co de. 41 * Passed to GrGLProcessors so they can add texture reads to their shader co de.
(...skipping 14 matching lines...) Expand all
60 56
61 private: 57 private:
62 UniformHandle fSamplerUniform; 58 UniformHandle fSamplerUniform;
63 uint32_t fConfigComponentMask; 59 uint32_t fConfigComponentMask;
64 char fSwizzle[5]; 60 char fSwizzle[5];
65 61
66 friend class GrGLShaderBuilder; 62 friend class GrGLShaderBuilder;
67 }; 63 };
68 64
69 typedef SkTArray<TextureSampler> TextureSamplerArray; 65 typedef SkTArray<TextureSampler> TextureSamplerArray;
70
71 virtual ~GrGLProcessor() {}
72
73 const char* name() const { return fFactory.name(); }
74
75 static void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilde r*) {}
76
77 protected:
78 const GrBackendProcessorFactory& fFactory;
79 }; 66 };
80 67
81 class GrGLFPBuilder; 68 class GrGLFPBuilder;
82 69
83 class GrGLFragmentProcessor : public GrGLProcessor { 70 class GrGLFragmentProcessor {
84 public: 71 public:
85 GrGLFragmentProcessor(const GrBackendProcessorFactory& factory) 72 GrGLFragmentProcessor() {}
86 : INHERITED(factory) {
87 }
88 73
89 virtual ~GrGLFragmentProcessor() {} 74 virtual ~GrGLFragmentProcessor() {}
90 75
76 typedef GrGLProgramDataManager::UniformHandle UniformHandle;
77 typedef GrGLProcessor::TransformedCoordsArray TransformedCoordsArray;
78 typedef GrGLProcessor::TextureSamplerArray TextureSamplerArray;
79
91 /** Called when the program stage should insert its code into the shaders. T he code in each 80 /** Called when the program stage should insert its code into the shaders. T he code in each
92 shader will be in its own block ({}) and so locally scoped names will no t collide across 81 shader will be in its own block ({}) and so locally scoped names will no t collide across
93 stages. 82 stages.
94 83
95 @param builder Interface used to emit code in the shaders. 84 @param builder Interface used to emit code in the shaders.
96 @param processor The processor that generated this program stage. 85 @param processor The processor that generated this program stage.
97 @param key The key that was computed by GenKey() from the gener ating GrProcessor. 86 @param key The key that was computed by GenKey() from the gener ating GrProcessor.
98 @param outputColor A predefined vec4 in the FS in which the stage shoul d place its output 87 @param outputColor A predefined vec4 in the FS in which the stage shoul d place its output
99 color (or coverage). 88 color (or coverage).
100 @param inputColor A vec4 that holds the input color to the stage in th e FS. This may be 89 @param inputColor A vec4 that holds the input color to the stage in th e FS. This may be
(...skipping 14 matching lines...) Expand all
115 const TextureSamplerArray& samplers) = 0; 104 const TextureSamplerArray& samplers) = 0;
116 105
117 /** A GrGLFragmentProcessor instance can be reused with any GrFragmentProces sor that produces 106 /** A GrGLFragmentProcessor instance can be reused with any GrFragmentProces sor that produces
118 the same stage key; this function reads data from a GrFragmentProcessor and uploads any 107 the same stage key; this function reads data from a GrFragmentProcessor and uploads any
119 uniform variables required by the shaders created in emitCode(). The GrF ragmentProcessor 108 uniform variables required by the shaders created in emitCode(). The GrF ragmentProcessor
120 parameter is guaranteed to be of the same type that created this GrGLFra gmentProcessor and 109 parameter is guaranteed to be of the same type that created this GrGLFra gmentProcessor and
121 to have an identical processor key as the one that created this GrGLFrag mentProcessor. */ 110 to have an identical processor key as the one that created this GrGLFrag mentProcessor. */
122 // TODO update this to pass in GrFragmentProcessor 111 // TODO update this to pass in GrFragmentProcessor
123 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) {} 112 virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) {}
124 113
114 static void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilde r*) {}
115
125 private: 116 private:
126 typedef GrGLProcessor INHERITED; 117 typedef GrGLProcessor INHERITED;
127 }; 118 };
128 119
129 class GrGLXferProcessor : public GrGLFragmentProcessor { 120 class GrGLXferProcessor : public GrGLFragmentProcessor {
130 public: 121 public:
131 GrGLXferProcessor(const GrBackendProcessorFactory& factory) 122 GrGLXferProcessor() {}
132 : INHERITED(factory) {
133 }
134 123
135 virtual ~GrGLXferProcessor() {} 124 virtual ~GrGLXferProcessor() {}
136 125
137 private: 126 private:
138 typedef GrGLFragmentProcessor INHERITED; 127 typedef GrGLFragmentProcessor INHERITED;
139 }; 128 };
140 129
141 #endif 130 #endif
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