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Side by Side Diff: src/core/SkMaskGamma.h

Issue 1842753002: Style bikeshed - remove extraneous whitespace (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 4 years, 8 months 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 SkMaskGamma_DEFINED 8 #ifndef SkMaskGamma_DEFINED
9 #define SkMaskGamma_DEFINED 9 #define SkMaskGamma_DEFINED
10 10
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85 * contains non-linear alpha values in an attempt to create gamma correct blits 85 * contains non-linear alpha values in an attempt to create gamma correct blits
86 * in the presence of a gamma incorrect (linear) blend in the blitter. 86 * in the presence of a gamma incorrect (linear) blend in the blitter.
87 * 87 *
88 * SkMaskGamma creates and maintains tables which convert linear alpha values 88 * SkMaskGamma creates and maintains tables which convert linear alpha values
89 * to gamma correcting alpha values. 89 * to gamma correcting alpha values.
90 * @param R The number of luminance bits to use [1, 8] from the red channel. 90 * @param R The number of luminance bits to use [1, 8] from the red channel.
91 * @param G The number of luminance bits to use [1, 8] from the green channel. 91 * @param G The number of luminance bits to use [1, 8] from the green channel.
92 * @param B The number of luminance bits to use [1, 8] from the blue channel. 92 * @param B The number of luminance bits to use [1, 8] from the blue channel.
93 */ 93 */
94 template <int R_LUM_BITS, int G_LUM_BITS, int B_LUM_BITS> class SkTMaskGamma : p ublic SkRefCnt { 94 template <int R_LUM_BITS, int G_LUM_BITS, int B_LUM_BITS> class SkTMaskGamma : p ublic SkRefCnt {
95 95
96 public: 96 public:
97 97
98 /** Creates a linear SkTMaskGamma. */ 98 /** Creates a linear SkTMaskGamma. */
99 SkTMaskGamma() : fIsLinear(true) { } 99 SkTMaskGamma() : fIsLinear(true) { }
100 100
101 /** 101 /**
102 * Creates tables to convert linear alpha values to gamma correcting alpha 102 * Creates tables to convert linear alpha values to gamma correcting alpha
103 * values. 103 * values.
104 * 104 *
105 * @param contrast A value in the range [0.0, 1.0] which indicates the 105 * @param contrast A value in the range [0.0, 1.0] which indicates the
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144 *numTables = (1 << MAX_LUM_BITS); 144 *numTables = (1 << MAX_LUM_BITS);
145 } 145 }
146 146
147 /** 147 /**
148 * Provides direct access to the full table set, so it can be uploaded 148 * Provides direct access to the full table set, so it can be uploaded
149 * into a texture. 149 * into a texture.
150 */ 150 */
151 const uint8_t* getGammaTables() const { 151 const uint8_t* getGammaTables() const {
152 return (const uint8_t*) fGammaTables; 152 return (const uint8_t*) fGammaTables;
153 } 153 }
154 154
155 private: 155 private:
156 static const int MAX_LUM_BITS = 156 static const int MAX_LUM_BITS =
157 B_LUM_BITS > (R_LUM_BITS > G_LUM_BITS ? R_LUM_BITS : G_LUM_BITS) 157 B_LUM_BITS > (R_LUM_BITS > G_LUM_BITS ? R_LUM_BITS : G_LUM_BITS)
158 ? B_LUM_BITS : (R_LUM_BITS > G_LUM_BITS ? R_LUM_BITS : G_LUM_BITS); 158 ? B_LUM_BITS : (R_LUM_BITS > G_LUM_BITS ? R_LUM_BITS : G_LUM_BITS);
159 uint8_t fGammaTables[1 << MAX_LUM_BITS][256]; 159 uint8_t fGammaTables[1 << MAX_LUM_BITS][256];
160 bool fIsLinear; 160 bool fIsLinear;
161 161
162 typedef SkRefCnt INHERITED; 162 typedef SkRefCnt INHERITED;
163 }; 163 };
164 164
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221 */ 221 */
222 template<bool APPLY_LUT> static inline U8CPU sk_apply_lut_if(U8CPU component, co nst uint8_t*) { 222 template<bool APPLY_LUT> static inline U8CPU sk_apply_lut_if(U8CPU component, co nst uint8_t*) {
223 return component; 223 return component;
224 } 224 }
225 template<> /*static*/ inline U8CPU sk_apply_lut_if<true>(U8CPU component, const uint8_t* lut) { 225 template<> /*static*/ inline U8CPU sk_apply_lut_if<true>(U8CPU component, const uint8_t* lut) {
226 return lut[component]; 226 return lut[component];
227 } 227 }
228 ///@} 228 ///@}
229 229
230 #endif 230 #endif
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