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| 1 /* |
| 2 * Copyright 2015 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #ifndef GrTextureParams_DEFINED |
| 9 #define GrTextureParams_DEFINED |
| 10 |
| 11 #include "GrTypes.h" |
| 12 #include "SkShader.h" |
| 13 |
| 14 /** |
| 15 * Represents the filtering and tile modes used to access a texture. |
| 16 */ |
| 17 class GrTextureParams { |
| 18 public: |
| 19 static const GrTextureParams& ClampNoFilter() { |
| 20 static const GrTextureParams gParams; |
| 21 return gParams; |
| 22 } |
| 23 static const GrTextureParams& ClampBilerp() { |
| 24 static const GrTextureParams gParams(SkShader::kClamp_TileMode, kBilerp_
FilterMode); |
| 25 return gParams; |
| 26 } |
| 27 |
| 28 GrTextureParams() { |
| 29 this->reset(); |
| 30 } |
| 31 |
| 32 enum FilterMode { |
| 33 kNone_FilterMode, |
| 34 kBilerp_FilterMode, |
| 35 kMipMap_FilterMode |
| 36 }; |
| 37 |
| 38 GrTextureParams(SkShader::TileMode tileXAndY, FilterMode filterMode) { |
| 39 this->reset(tileXAndY, filterMode); |
| 40 } |
| 41 |
| 42 GrTextureParams(const SkShader::TileMode tileModes[2], FilterMode filterMode
) { |
| 43 this->reset(tileModes, filterMode); |
| 44 } |
| 45 |
| 46 GrTextureParams(const GrTextureParams& params) { |
| 47 *this = params; |
| 48 } |
| 49 |
| 50 GrTextureParams& operator= (const GrTextureParams& params) { |
| 51 fTileModes[0] = params.fTileModes[0]; |
| 52 fTileModes[1] = params.fTileModes[1]; |
| 53 fFilterMode = params.fFilterMode; |
| 54 return *this; |
| 55 } |
| 56 |
| 57 void reset() { |
| 58 this->reset(SkShader::kClamp_TileMode, kNone_FilterMode); |
| 59 } |
| 60 |
| 61 void reset(SkShader::TileMode tileXAndY, FilterMode filterMode) { |
| 62 fTileModes[0] = fTileModes[1] = tileXAndY; |
| 63 fFilterMode = filterMode; |
| 64 } |
| 65 |
| 66 void reset(const SkShader::TileMode tileModes[2], FilterMode filterMode) { |
| 67 fTileModes[0] = tileModes[0]; |
| 68 fTileModes[1] = tileModes[1]; |
| 69 fFilterMode = filterMode; |
| 70 } |
| 71 |
| 72 void setClampNoFilter() { |
| 73 fTileModes[0] = fTileModes[1] = SkShader::kClamp_TileMode; |
| 74 fFilterMode = kNone_FilterMode; |
| 75 } |
| 76 |
| 77 void setClamp() { |
| 78 fTileModes[0] = fTileModes[1] = SkShader::kClamp_TileMode; |
| 79 } |
| 80 |
| 81 void setFilterMode(FilterMode filterMode) { fFilterMode = filterMode; } |
| 82 |
| 83 void setTileModeX(const SkShader::TileMode tm) { fTileModes[0] = tm; } |
| 84 void setTileModeY(const SkShader::TileMode tm) { fTileModes[1] = tm; } |
| 85 void setTileModeXAndY(const SkShader::TileMode tm) { fTileModes[0] = fTileMo
des[1] = tm; } |
| 86 |
| 87 SkShader::TileMode getTileModeX() const { return fTileModes[0]; } |
| 88 |
| 89 SkShader::TileMode getTileModeY() const { return fTileModes[1]; } |
| 90 |
| 91 bool isTiled() const { |
| 92 return SkShader::kClamp_TileMode != fTileModes[0] || |
| 93 SkShader::kClamp_TileMode != fTileModes[1]; |
| 94 } |
| 95 |
| 96 FilterMode filterMode() const { return fFilterMode; } |
| 97 |
| 98 bool operator== (const GrTextureParams& other) const { |
| 99 return fTileModes[0] == other.fTileModes[0] && |
| 100 fTileModes[1] == other.fTileModes[1] && |
| 101 fFilterMode == other.fFilterMode; |
| 102 } |
| 103 |
| 104 bool operator!= (const GrTextureParams& other) const { return !(*this == oth
er); } |
| 105 |
| 106 private: |
| 107 SkShader::TileMode fTileModes[2]; |
| 108 FilterMode fFilterMode; |
| 109 }; |
| 110 #endif |
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