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Side by Side Diff: include/gpu/GrCoordTransform.h

Issue 582963002: Solo gp (Closed) Base URL: https://skia.googlesource.com/skia.git@no_peb
Patch Set: rebase Created 6 years, 3 months ago
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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 GrCoordTransform_DEFINED 8 #ifndef GrCoordTransform_DEFINED
9 #define GrCoordTransform_DEFINED 9 #define GrCoordTransform_DEFINED
10 10
11 #include "GrEffect.h" 11 #include "GrProcessor.h"
12 #include "SkMatrix.h" 12 #include "SkMatrix.h"
13 #include "GrTexture.h" 13 #include "GrTexture.h"
14 #include "GrTypes.h" 14 #include "GrTypes.h"
15 15
16 /** 16 /**
17 * Coordinates available to GrEffect subclasses for requesting transformations. Transformed 17 * Coordinates available to GrProcessor subclasses for requesting transformation s. Transformed
18 * coordinates are made available in the the portion of fragment shader emitted by the effect. 18 * coordinates are made available in the the portion of fragment shader emitted by the effect.
19 */ 19 */
20 enum GrCoordSet { 20 enum GrCoordSet {
21 /** 21 /**
22 * The user-space coordinates that map to the fragment being rendered. These coords account for 22 * The user-space coordinates that map to the fragment being rendered. These coords account for
23 * any change of coordinate system done on the CPU by GrContext before rende ring, and also are 23 * any change of coordinate system done on the CPU by GrContext before rende ring, and also are
24 * correct for draws that take explicit local coords rather than inferring t hem from the 24 * correct for draws that take explicit local coords rather than inferring t hem from the
25 * primitive's positions (e.g. drawVertices). These are usually the coords a GrEffect wants. 25 * primitive's positions (e.g. drawVertices). These are usually the coords a GrProcessor wants.
26 */ 26 */
27 kLocal_GrCoordSet, 27 kLocal_GrCoordSet,
28 28
29 /** 29 /**
30 * The actual vertex position. Note that GrContext may not draw using the or iginal view matrix 30 * The actual vertex position. Note that GrContext may not draw using the or iginal view matrix
31 * specified by the caller, as it may have transformed vertices into another space. These are 31 * specified by the caller, as it may have transformed vertices into another space. These are
32 * usually not the coordinates a GrEffect wants. 32 * usually not the coordinates a GrProcessor wants.
33 */ 33 */
34 kPosition_GrCoordSet 34 kPosition_GrCoordSet
35 }; 35 };
36 36
37 /** 37 /**
38 * A class representing a linear transformation from one of the built-in coordin ate sets (local or 38 * A class representing a linear transformation from one of the built-in coordin ate sets (local or
39 * position). GrEffects just define these transformations, and the framework doe s the rest of the 39 * position). GrProcessors just define these transformations, and the framework does the rest of the
40 * work to make the transformed coordinates available in their fragment shader. 40 * work to make the transformed coordinates available in their fragment shader.
41 */ 41 */
42 class GrCoordTransform : SkNoncopyable { 42 class GrCoordTransform : SkNoncopyable {
43 public: 43 public:
44 GrCoordTransform() { SkDEBUGCODE(fInEffect = false); } 44 GrCoordTransform() { SkDEBUGCODE(fInEffect = false); }
45 45
46 /** 46 /**
47 * Create a transformation that maps [0, 1] to a texture's boundaries. 47 * Create a transformation that maps [0, 1] to a texture's boundaries.
48 */ 48 */
49 GrCoordTransform(GrCoordSet sourceCoords, const GrTexture* texture) { 49 GrCoordTransform(GrCoordSet sourceCoords, const GrTexture* texture) {
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119 119
120 #ifdef SK_DEBUG 120 #ifdef SK_DEBUG
121 public: 121 public:
122 void setInEffect() const { fInEffect = true; } 122 void setInEffect() const { fInEffect = true; }
123 private: 123 private:
124 mutable bool fInEffect; 124 mutable bool fInEffect;
125 #endif 125 #endif
126 }; 126 };
127 127
128 #endif 128 #endif
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