epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2006 The Android Open Source Project |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 4 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #include "SkXfermode.h" |
commit-bot@chromium.org | c524e98 | 2014-04-09 15:43:46 +0000 | [diff] [blame] | 10 | #include "SkXfermode_opts_SSE2.h" |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 11 | #include "SkXfermode_proccoeff.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 12 | #include "SkColorPriv.h" |
commit-bot@chromium.org | 97de357 | 2014-05-29 20:13:22 +0000 | [diff] [blame] | 13 | #include "SkLazyPtr.h" |
reed@google.com | 4b163ed | 2012-08-07 21:35:13 +0000 | [diff] [blame] | 14 | #include "SkMathPriv.h" |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 15 | #include "SkReadBuffer.h" |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 16 | #include "SkString.h" |
commit-bot@chromium.org | cd7992b | 2013-10-17 16:29:34 +0000 | [diff] [blame] | 17 | #include "SkUtilsArm.h" |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 18 | #include "SkWriteBuffer.h" |
commit-bot@chromium.org | cd7992b | 2013-10-17 16:29:34 +0000 | [diff] [blame] | 19 | |
| 20 | #if !SK_ARM_NEON_IS_NONE |
| 21 | #include "SkXfermode_opts_arm_neon.h" |
| 22 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 23 | |
| 24 | #define SkAlphaMulAlpha(a, b) SkMulDiv255Round(a, b) |
| 25 | |
reed@android.com | fc25abd | 2009-01-15 14:38:33 +0000 | [diff] [blame] | 26 | #if 0 |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 27 | // idea for higher precision blends in xfer procs (and slightly faster) |
| 28 | // see DstATop as a probable caller |
| 29 | static U8CPU mulmuldiv255round(U8CPU a, U8CPU b, U8CPU c, U8CPU d) { |
| 30 | SkASSERT(a <= 255); |
| 31 | SkASSERT(b <= 255); |
| 32 | SkASSERT(c <= 255); |
| 33 | SkASSERT(d <= 255); |
| 34 | unsigned prod = SkMulS16(a, b) + SkMulS16(c, d) + 128; |
| 35 | unsigned result = (prod + (prod >> 8)) >> 8; |
| 36 | SkASSERT(result <= 255); |
| 37 | return result; |
| 38 | } |
reed@android.com | fc25abd | 2009-01-15 14:38:33 +0000 | [diff] [blame] | 39 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 40 | |
deanm@chromium.org | da94699 | 2009-07-03 12:54:24 +0000 | [diff] [blame] | 41 | static inline unsigned saturated_add(unsigned a, unsigned b) { |
reed@android.com | 543ed93 | 2009-04-24 12:43:40 +0000 | [diff] [blame] | 42 | SkASSERT(a <= 255); |
| 43 | SkASSERT(b <= 255); |
| 44 | unsigned sum = a + b; |
| 45 | if (sum > 255) { |
| 46 | sum = 255; |
| 47 | } |
| 48 | return sum; |
| 49 | } |
| 50 | |
deanm@chromium.org | da94699 | 2009-07-03 12:54:24 +0000 | [diff] [blame] | 51 | static inline int clamp_signed_byte(int n) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 52 | if (n < 0) { |
| 53 | n = 0; |
| 54 | } else if (n > 255) { |
| 55 | n = 255; |
| 56 | } |
| 57 | return n; |
| 58 | } |
| 59 | |
deanm@chromium.org | da94699 | 2009-07-03 12:54:24 +0000 | [diff] [blame] | 60 | static inline int clamp_div255round(int prod) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 61 | if (prod <= 0) { |
| 62 | return 0; |
| 63 | } else if (prod >= 255*255) { |
| 64 | return 255; |
| 65 | } else { |
| 66 | return SkDiv255Round(prod); |
| 67 | } |
| 68 | } |
| 69 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 70 | /////////////////////////////////////////////////////////////////////////////// |
| 71 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 72 | // kClear_Mode, //!< [0, 0] |
| 73 | static SkPMColor clear_modeproc(SkPMColor src, SkPMColor dst) { |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | // kSrc_Mode, //!< [Sa, Sc] |
| 78 | static SkPMColor src_modeproc(SkPMColor src, SkPMColor dst) { |
| 79 | return src; |
| 80 | } |
| 81 | |
| 82 | // kDst_Mode, //!< [Da, Dc] |
| 83 | static SkPMColor dst_modeproc(SkPMColor src, SkPMColor dst) { |
| 84 | return dst; |
| 85 | } |
| 86 | |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 87 | // kSrcOver_Mode, //!< [Sa + Da - Sa*Da, Sc + (1 - Sa)*Dc] |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 88 | static SkPMColor srcover_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | 1116fb2 | 2009-03-03 20:31:12 +0000 | [diff] [blame] | 89 | #if 0 |
| 90 | // this is the old, more-correct way, but it doesn't guarantee that dst==255 |
| 91 | // will always stay opaque |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 92 | return src + SkAlphaMulQ(dst, SkAlpha255To256(255 - SkGetPackedA32(src))); |
reed@android.com | 1116fb2 | 2009-03-03 20:31:12 +0000 | [diff] [blame] | 93 | #else |
| 94 | // this is slightly faster, but more importantly guarantees that dst==255 |
| 95 | // will always stay opaque |
| 96 | return src + SkAlphaMulQ(dst, 256 - SkGetPackedA32(src)); |
| 97 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 98 | } |
| 99 | |
reed@android.com | 1116fb2 | 2009-03-03 20:31:12 +0000 | [diff] [blame] | 100 | // kDstOver_Mode, //!< [Sa + Da - Sa*Da, Dc + (1 - Da)*Sc] |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 101 | static SkPMColor dstover_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | 1116fb2 | 2009-03-03 20:31:12 +0000 | [diff] [blame] | 102 | // this is the reverse of srcover, just flipping src and dst |
| 103 | // see srcover's comment about the 256 for opaqueness guarantees |
| 104 | return dst + SkAlphaMulQ(src, 256 - SkGetPackedA32(dst)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | // kSrcIn_Mode, //!< [Sa * Da, Sc * Da] |
| 108 | static SkPMColor srcin_modeproc(SkPMColor src, SkPMColor dst) { |
| 109 | return SkAlphaMulQ(src, SkAlpha255To256(SkGetPackedA32(dst))); |
| 110 | } |
| 111 | |
| 112 | // kDstIn_Mode, //!< [Sa * Da, Sa * Dc] |
| 113 | static SkPMColor dstin_modeproc(SkPMColor src, SkPMColor dst) { |
| 114 | return SkAlphaMulQ(dst, SkAlpha255To256(SkGetPackedA32(src))); |
| 115 | } |
| 116 | |
| 117 | // kSrcOut_Mode, //!< [Sa * (1 - Da), Sc * (1 - Da)] |
| 118 | static SkPMColor srcout_modeproc(SkPMColor src, SkPMColor dst) { |
| 119 | return SkAlphaMulQ(src, SkAlpha255To256(255 - SkGetPackedA32(dst))); |
| 120 | } |
| 121 | |
| 122 | // kDstOut_Mode, //!< [Da * (1 - Sa), Dc * (1 - Sa)] |
| 123 | static SkPMColor dstout_modeproc(SkPMColor src, SkPMColor dst) { |
| 124 | return SkAlphaMulQ(dst, SkAlpha255To256(255 - SkGetPackedA32(src))); |
| 125 | } |
| 126 | |
| 127 | // kSrcATop_Mode, //!< [Da, Sc * Da + (1 - Sa) * Dc] |
| 128 | static SkPMColor srcatop_modeproc(SkPMColor src, SkPMColor dst) { |
| 129 | unsigned sa = SkGetPackedA32(src); |
| 130 | unsigned da = SkGetPackedA32(dst); |
| 131 | unsigned isa = 255 - sa; |
| 132 | |
| 133 | return SkPackARGB32(da, |
| 134 | SkAlphaMulAlpha(da, SkGetPackedR32(src)) + |
| 135 | SkAlphaMulAlpha(isa, SkGetPackedR32(dst)), |
| 136 | SkAlphaMulAlpha(da, SkGetPackedG32(src)) + |
| 137 | SkAlphaMulAlpha(isa, SkGetPackedG32(dst)), |
| 138 | SkAlphaMulAlpha(da, SkGetPackedB32(src)) + |
| 139 | SkAlphaMulAlpha(isa, SkGetPackedB32(dst))); |
| 140 | } |
| 141 | |
| 142 | // kDstATop_Mode, //!< [Sa, Sa * Dc + Sc * (1 - Da)] |
| 143 | static SkPMColor dstatop_modeproc(SkPMColor src, SkPMColor dst) { |
| 144 | unsigned sa = SkGetPackedA32(src); |
| 145 | unsigned da = SkGetPackedA32(dst); |
| 146 | unsigned ida = 255 - da; |
| 147 | |
| 148 | return SkPackARGB32(sa, |
| 149 | SkAlphaMulAlpha(ida, SkGetPackedR32(src)) + |
| 150 | SkAlphaMulAlpha(sa, SkGetPackedR32(dst)), |
| 151 | SkAlphaMulAlpha(ida, SkGetPackedG32(src)) + |
| 152 | SkAlphaMulAlpha(sa, SkGetPackedG32(dst)), |
| 153 | SkAlphaMulAlpha(ida, SkGetPackedB32(src)) + |
| 154 | SkAlphaMulAlpha(sa, SkGetPackedB32(dst))); |
| 155 | } |
| 156 | |
| 157 | // kXor_Mode [Sa + Da - 2 * Sa * Da, Sc * (1 - Da) + (1 - Sa) * Dc] |
| 158 | static SkPMColor xor_modeproc(SkPMColor src, SkPMColor dst) { |
| 159 | unsigned sa = SkGetPackedA32(src); |
| 160 | unsigned da = SkGetPackedA32(dst); |
| 161 | unsigned isa = 255 - sa; |
| 162 | unsigned ida = 255 - da; |
| 163 | |
| 164 | return SkPackARGB32(sa + da - (SkAlphaMulAlpha(sa, da) << 1), |
| 165 | SkAlphaMulAlpha(ida, SkGetPackedR32(src)) + |
| 166 | SkAlphaMulAlpha(isa, SkGetPackedR32(dst)), |
| 167 | SkAlphaMulAlpha(ida, SkGetPackedG32(src)) + |
| 168 | SkAlphaMulAlpha(isa, SkGetPackedG32(dst)), |
| 169 | SkAlphaMulAlpha(ida, SkGetPackedB32(src)) + |
| 170 | SkAlphaMulAlpha(isa, SkGetPackedB32(dst))); |
| 171 | } |
| 172 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 173 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 174 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 175 | // kPlus_Mode |
| 176 | static SkPMColor plus_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 177 | unsigned b = saturated_add(SkGetPackedB32(src), SkGetPackedB32(dst)); |
deanm@chromium.org | da94699 | 2009-07-03 12:54:24 +0000 | [diff] [blame] | 178 | unsigned g = saturated_add(SkGetPackedG32(src), SkGetPackedG32(dst)); |
| 179 | unsigned r = saturated_add(SkGetPackedR32(src), SkGetPackedR32(dst)); |
| 180 | unsigned a = saturated_add(SkGetPackedA32(src), SkGetPackedA32(dst)); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 181 | return SkPackARGB32(a, r, g, b); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 182 | } |
| 183 | |
reed@google.com | 8d3cd7a | 2013-01-30 21:36:11 +0000 | [diff] [blame] | 184 | // kModulate_Mode |
| 185 | static SkPMColor modulate_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 186 | int a = SkAlphaMulAlpha(SkGetPackedA32(src), SkGetPackedA32(dst)); |
| 187 | int r = SkAlphaMulAlpha(SkGetPackedR32(src), SkGetPackedR32(dst)); |
| 188 | int g = SkAlphaMulAlpha(SkGetPackedG32(src), SkGetPackedG32(dst)); |
| 189 | int b = SkAlphaMulAlpha(SkGetPackedB32(src), SkGetPackedB32(dst)); |
| 190 | return SkPackARGB32(a, r, g, b); |
| 191 | } |
| 192 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 193 | static inline int srcover_byte(int a, int b) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 194 | return a + b - SkAlphaMulAlpha(a, b); |
| 195 | } |
reed@google.com | 25cfa69 | 2013-02-04 20:06:00 +0000 | [diff] [blame] | 196 | |
| 197 | // kMultiply_Mode |
| 198 | // B(Cb, Cs) = Cb x Cs |
| 199 | // multiply uses its own version of blendfunc_byte because sa and da are not needed |
| 200 | static int blendfunc_multiply_byte(int sc, int dc, int sa, int da) { |
| 201 | return clamp_div255round(sc * (255 - da) + dc * (255 - sa) + sc * dc); |
| 202 | } |
| 203 | |
| 204 | static SkPMColor multiply_modeproc(SkPMColor src, SkPMColor dst) { |
| 205 | int sa = SkGetPackedA32(src); |
| 206 | int da = SkGetPackedA32(dst); |
| 207 | int a = srcover_byte(sa, da); |
| 208 | int r = blendfunc_multiply_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 209 | int g = blendfunc_multiply_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 210 | int b = blendfunc_multiply_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 211 | return SkPackARGB32(a, r, g, b); |
| 212 | } |
| 213 | |
| 214 | // kScreen_Mode |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 215 | static SkPMColor screen_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 216 | int a = srcover_byte(SkGetPackedA32(src), SkGetPackedA32(dst)); |
| 217 | int r = srcover_byte(SkGetPackedR32(src), SkGetPackedR32(dst)); |
| 218 | int g = srcover_byte(SkGetPackedG32(src), SkGetPackedG32(dst)); |
| 219 | int b = srcover_byte(SkGetPackedB32(src), SkGetPackedB32(dst)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 220 | return SkPackARGB32(a, r, g, b); |
| 221 | } |
| 222 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 223 | // kOverlay_Mode |
| 224 | static inline int overlay_byte(int sc, int dc, int sa, int da) { |
| 225 | int tmp = sc * (255 - da) + dc * (255 - sa); |
| 226 | int rc; |
| 227 | if (2 * dc <= da) { |
| 228 | rc = 2 * sc * dc; |
| 229 | } else { |
| 230 | rc = sa * da - 2 * (da - dc) * (sa - sc); |
| 231 | } |
| 232 | return clamp_div255round(rc + tmp); |
| 233 | } |
| 234 | static SkPMColor overlay_modeproc(SkPMColor src, SkPMColor dst) { |
| 235 | int sa = SkGetPackedA32(src); |
| 236 | int da = SkGetPackedA32(dst); |
| 237 | int a = srcover_byte(sa, da); |
| 238 | int r = overlay_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 239 | int g = overlay_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 240 | int b = overlay_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 241 | return SkPackARGB32(a, r, g, b); |
| 242 | } |
| 243 | |
| 244 | // kDarken_Mode |
| 245 | static inline int darken_byte(int sc, int dc, int sa, int da) { |
| 246 | int sd = sc * da; |
| 247 | int ds = dc * sa; |
| 248 | if (sd < ds) { |
| 249 | // srcover |
| 250 | return sc + dc - SkDiv255Round(ds); |
| 251 | } else { |
| 252 | // dstover |
| 253 | return dc + sc - SkDiv255Round(sd); |
| 254 | } |
| 255 | } |
| 256 | static SkPMColor darken_modeproc(SkPMColor src, SkPMColor dst) { |
| 257 | int sa = SkGetPackedA32(src); |
| 258 | int da = SkGetPackedA32(dst); |
| 259 | int a = srcover_byte(sa, da); |
| 260 | int r = darken_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 261 | int g = darken_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 262 | int b = darken_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 263 | return SkPackARGB32(a, r, g, b); |
| 264 | } |
| 265 | |
| 266 | // kLighten_Mode |
| 267 | static inline int lighten_byte(int sc, int dc, int sa, int da) { |
| 268 | int sd = sc * da; |
| 269 | int ds = dc * sa; |
| 270 | if (sd > ds) { |
| 271 | // srcover |
| 272 | return sc + dc - SkDiv255Round(ds); |
| 273 | } else { |
| 274 | // dstover |
| 275 | return dc + sc - SkDiv255Round(sd); |
| 276 | } |
| 277 | } |
| 278 | static SkPMColor lighten_modeproc(SkPMColor src, SkPMColor dst) { |
| 279 | int sa = SkGetPackedA32(src); |
| 280 | int da = SkGetPackedA32(dst); |
| 281 | int a = srcover_byte(sa, da); |
| 282 | int r = lighten_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 283 | int g = lighten_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 284 | int b = lighten_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 285 | return SkPackARGB32(a, r, g, b); |
| 286 | } |
| 287 | |
| 288 | // kColorDodge_Mode |
| 289 | static inline int colordodge_byte(int sc, int dc, int sa, int da) { |
| 290 | int diff = sa - sc; |
| 291 | int rc; |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 292 | if (0 == dc) { |
| 293 | return SkAlphaMulAlpha(sc, 255 - da); |
| 294 | } else if (0 == diff) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 295 | rc = sa * da + sc * (255 - da) + dc * (255 - sa); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 296 | } else { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 297 | diff = dc * sa / diff; |
| 298 | rc = sa * ((da < diff) ? da : diff) + sc * (255 - da) + dc * (255 - sa); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 299 | } |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 300 | return clamp_div255round(rc); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 301 | } |
| 302 | static SkPMColor colordodge_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 303 | int sa = SkGetPackedA32(src); |
| 304 | int da = SkGetPackedA32(dst); |
| 305 | int a = srcover_byte(sa, da); |
| 306 | int r = colordodge_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 307 | int g = colordodge_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 308 | int b = colordodge_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 309 | return SkPackARGB32(a, r, g, b); |
| 310 | } |
| 311 | |
| 312 | // kColorBurn_Mode |
| 313 | static inline int colorburn_byte(int sc, int dc, int sa, int da) { |
| 314 | int rc; |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 315 | if (dc == da) { |
| 316 | rc = sa * da + sc * (255 - da) + dc * (255 - sa); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 317 | } else if (0 == sc) { |
| 318 | return SkAlphaMulAlpha(dc, 255 - sa); |
| 319 | } else { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 320 | int tmp = (da - dc) * sa / sc; |
| 321 | rc = sa * (da - ((da < tmp) ? da : tmp)) |
| 322 | + sc * (255 - da) + dc * (255 - sa); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 323 | } |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 324 | return clamp_div255round(rc); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 325 | } |
| 326 | static SkPMColor colorburn_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 327 | int sa = SkGetPackedA32(src); |
| 328 | int da = SkGetPackedA32(dst); |
| 329 | int a = srcover_byte(sa, da); |
| 330 | int r = colorburn_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 331 | int g = colorburn_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 332 | int b = colorburn_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 333 | return SkPackARGB32(a, r, g, b); |
| 334 | } |
| 335 | |
| 336 | // kHardLight_Mode |
| 337 | static inline int hardlight_byte(int sc, int dc, int sa, int da) { |
| 338 | int rc; |
| 339 | if (2 * sc <= sa) { |
| 340 | rc = 2 * sc * dc; |
| 341 | } else { |
| 342 | rc = sa * da - 2 * (da - dc) * (sa - sc); |
| 343 | } |
| 344 | return clamp_div255round(rc + sc * (255 - da) + dc * (255 - sa)); |
| 345 | } |
| 346 | static SkPMColor hardlight_modeproc(SkPMColor src, SkPMColor dst) { |
| 347 | int sa = SkGetPackedA32(src); |
| 348 | int da = SkGetPackedA32(dst); |
| 349 | int a = srcover_byte(sa, da); |
| 350 | int r = hardlight_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 351 | int g = hardlight_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 352 | int b = hardlight_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 353 | return SkPackARGB32(a, r, g, b); |
| 354 | } |
| 355 | |
| 356 | // returns 255 * sqrt(n/255) |
| 357 | static U8CPU sqrt_unit_byte(U8CPU n) { |
| 358 | return SkSqrtBits(n, 15+4); |
| 359 | } |
| 360 | |
| 361 | // kSoftLight_Mode |
| 362 | static inline int softlight_byte(int sc, int dc, int sa, int da) { |
| 363 | int m = da ? dc * 256 / da : 0; |
| 364 | int rc; |
| 365 | if (2 * sc <= sa) { |
| 366 | rc = dc * (sa + ((2 * sc - sa) * (256 - m) >> 8)); |
| 367 | } else if (4 * dc <= da) { |
| 368 | int tmp = (4 * m * (4 * m + 256) * (m - 256) >> 16) + 7 * m; |
| 369 | rc = dc * sa + (da * (2 * sc - sa) * tmp >> 8); |
| 370 | } else { |
| 371 | int tmp = sqrt_unit_byte(m) - m; |
| 372 | rc = dc * sa + (da * (2 * sc - sa) * tmp >> 8); |
| 373 | } |
| 374 | return clamp_div255round(rc + sc * (255 - da) + dc * (255 - sa)); |
| 375 | } |
| 376 | static SkPMColor softlight_modeproc(SkPMColor src, SkPMColor dst) { |
| 377 | int sa = SkGetPackedA32(src); |
| 378 | int da = SkGetPackedA32(dst); |
| 379 | int a = srcover_byte(sa, da); |
| 380 | int r = softlight_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 381 | int g = softlight_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 382 | int b = softlight_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 383 | return SkPackARGB32(a, r, g, b); |
| 384 | } |
| 385 | |
| 386 | // kDifference_Mode |
| 387 | static inline int difference_byte(int sc, int dc, int sa, int da) { |
| 388 | int tmp = SkMin32(sc * da, dc * sa); |
| 389 | return clamp_signed_byte(sc + dc - 2 * SkDiv255Round(tmp)); |
| 390 | } |
| 391 | static SkPMColor difference_modeproc(SkPMColor src, SkPMColor dst) { |
| 392 | int sa = SkGetPackedA32(src); |
| 393 | int da = SkGetPackedA32(dst); |
| 394 | int a = srcover_byte(sa, da); |
| 395 | int r = difference_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 396 | int g = difference_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 397 | int b = difference_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 398 | return SkPackARGB32(a, r, g, b); |
| 399 | } |
| 400 | |
| 401 | // kExclusion_Mode |
commit-bot@chromium.org | e38e53b | 2013-07-15 12:20:36 +0000 | [diff] [blame] | 402 | static inline int exclusion_byte(int sc, int dc, int, int) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 403 | // this equations is wacky, wait for SVG to confirm it |
commit-bot@chromium.org | e38e53b | 2013-07-15 12:20:36 +0000 | [diff] [blame] | 404 | //int r = sc * da + dc * sa - 2 * sc * dc + sc * (255 - da) + dc * (255 - sa); |
| 405 | |
| 406 | // The above equation can be simplified as follows |
| 407 | int r = 255*(sc + dc) - 2 * sc * dc; |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 408 | return clamp_div255round(r); |
| 409 | } |
| 410 | static SkPMColor exclusion_modeproc(SkPMColor src, SkPMColor dst) { |
| 411 | int sa = SkGetPackedA32(src); |
| 412 | int da = SkGetPackedA32(dst); |
| 413 | int a = srcover_byte(sa, da); |
| 414 | int r = exclusion_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 415 | int g = exclusion_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 416 | int b = exclusion_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
reed@android.com | 543ed93 | 2009-04-24 12:43:40 +0000 | [diff] [blame] | 417 | return SkPackARGB32(a, r, g, b); |
| 418 | } |
| 419 | |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 420 | // The CSS compositing spec introduces the following formulas: |
| 421 | // (See https://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html#blendingnonseparable) |
| 422 | // SkComputeLuminance is similar to this formula but it uses the new definition from Rec. 709 |
| 423 | // while PDF and CG uses the one from Rec. Rec. 601 |
| 424 | // See http://www.glennchan.info/articles/technical/hd-versus-sd-color-space/hd-versus-sd-color-space.htm |
| 425 | static inline int Lum(int r, int g, int b) |
| 426 | { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 427 | return SkDiv255Round(r * 77 + g * 150 + b * 28); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 428 | } |
| 429 | |
| 430 | static inline int min2(int a, int b) { return a < b ? a : b; } |
| 431 | static inline int max2(int a, int b) { return a > b ? a : b; } |
skia.committer@gmail.com | 6433435 | 2013-03-06 07:01:46 +0000 | [diff] [blame] | 432 | #define minimum(a, b, c) min2(min2(a, b), c) |
| 433 | #define maximum(a, b, c) max2(max2(a, b), c) |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 434 | |
| 435 | static inline int Sat(int r, int g, int b) { |
| 436 | return maximum(r, g, b) - minimum(r, g, b); |
| 437 | } |
| 438 | |
| 439 | static inline void setSaturationComponents(int* Cmin, int* Cmid, int* Cmax, int s) { |
reed@google.com | 3c1ea3a | 2013-03-07 15:31:58 +0000 | [diff] [blame] | 440 | if(*Cmax > *Cmin) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 441 | *Cmid = SkMulDiv(*Cmid - *Cmin, s, *Cmax - *Cmin); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 442 | *Cmax = s; |
| 443 | } else { |
| 444 | *Cmax = 0; |
| 445 | *Cmid = 0; |
| 446 | } |
| 447 | |
| 448 | *Cmin = 0; |
| 449 | } |
| 450 | |
| 451 | static inline void SetSat(int* r, int* g, int* b, int s) { |
| 452 | if(*r <= *g) { |
| 453 | if(*g <= *b) { |
| 454 | setSaturationComponents(r, g, b, s); |
| 455 | } else if(*r <= *b) { |
| 456 | setSaturationComponents(r, b, g, s); |
| 457 | } else { |
| 458 | setSaturationComponents(b, r, g, s); |
| 459 | } |
| 460 | } else if(*r <= *b) { |
| 461 | setSaturationComponents(g, r, b, s); |
| 462 | } else if(*g <= *b) { |
| 463 | setSaturationComponents(g, b, r, s); |
| 464 | } else { |
| 465 | setSaturationComponents(b, g, r, s); |
| 466 | } |
| 467 | } |
| 468 | |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 469 | static inline void clipColor(int* r, int* g, int* b, int a) { |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 470 | int L = Lum(*r, *g, *b); |
| 471 | int n = minimum(*r, *g, *b); |
| 472 | int x = maximum(*r, *g, *b); |
commit-bot@chromium.org | b85ebea | 2013-12-12 19:47:09 +0000 | [diff] [blame] | 473 | int denom; |
| 474 | if ((n < 0) && (denom = L - n)) { // Compute denom and make sure it's non zero |
| 475 | *r = L + SkMulDiv(*r - L, L, denom); |
| 476 | *g = L + SkMulDiv(*g - L, L, denom); |
| 477 | *b = L + SkMulDiv(*b - L, L, denom); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 478 | } |
| 479 | |
commit-bot@chromium.org | b85ebea | 2013-12-12 19:47:09 +0000 | [diff] [blame] | 480 | if ((x > a) && (denom = x - L)) { // Compute denom and make sure it's non zero |
| 481 | int numer = a - L; |
| 482 | *r = L + SkMulDiv(*r - L, numer, denom); |
| 483 | *g = L + SkMulDiv(*g - L, numer, denom); |
| 484 | *b = L + SkMulDiv(*b - L, numer, denom); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 485 | } |
| 486 | } |
| 487 | |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 488 | static inline void SetLum(int* r, int* g, int* b, int a, int l) { |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 489 | int d = l - Lum(*r, *g, *b); |
| 490 | *r += d; |
| 491 | *g += d; |
| 492 | *b += d; |
| 493 | |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 494 | clipColor(r, g, b, a); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 495 | } |
| 496 | |
| 497 | // non-separable blend modes are done in non-premultiplied alpha |
| 498 | #define blendfunc_nonsep_byte(sc, dc, sa, da, blendval) \ |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 499 | clamp_div255round(sc * (255 - da) + dc * (255 - sa) + blendval) |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 500 | |
| 501 | // kHue_Mode |
| 502 | // B(Cb, Cs) = SetLum(SetSat(Cs, Sat(Cb)), Lum(Cb)) |
| 503 | // Create a color with the hue of the source color and the saturation and luminosity of the backdrop color. |
| 504 | static SkPMColor hue_modeproc(SkPMColor src, SkPMColor dst) { |
| 505 | int sr = SkGetPackedR32(src); |
| 506 | int sg = SkGetPackedG32(src); |
| 507 | int sb = SkGetPackedB32(src); |
| 508 | int sa = SkGetPackedA32(src); |
| 509 | |
| 510 | int dr = SkGetPackedR32(dst); |
| 511 | int dg = SkGetPackedG32(dst); |
| 512 | int db = SkGetPackedB32(dst); |
| 513 | int da = SkGetPackedA32(dst); |
| 514 | int Sr, Sg, Sb; |
| 515 | |
| 516 | if(sa && da) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 517 | Sr = sr * sa; |
| 518 | Sg = sg * sa; |
| 519 | Sb = sb * sa; |
| 520 | SetSat(&Sr, &Sg, &Sb, Sat(dr, dg, db) * sa); |
| 521 | SetLum(&Sr, &Sg, &Sb, sa * da, Lum(dr, dg, db) * sa); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 522 | } else { |
| 523 | Sr = 0; |
| 524 | Sg = 0; |
| 525 | Sb = 0; |
| 526 | } |
| 527 | |
| 528 | int a = srcover_byte(sa, da); |
| 529 | int r = blendfunc_nonsep_byte(sr, dr, sa, da, Sr); |
| 530 | int g = blendfunc_nonsep_byte(sg, dg, sa, da, Sg); |
| 531 | int b = blendfunc_nonsep_byte(sb, db, sa, da, Sb); |
| 532 | return SkPackARGB32(a, r, g, b); |
| 533 | } |
| 534 | |
| 535 | // kSaturation_Mode |
| 536 | // B(Cb, Cs) = SetLum(SetSat(Cb, Sat(Cs)), Lum(Cb)) |
skia.committer@gmail.com | 6433435 | 2013-03-06 07:01:46 +0000 | [diff] [blame] | 537 | // Create a color with the saturation of the source color and the hue and luminosity of the backdrop color. |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 538 | static SkPMColor saturation_modeproc(SkPMColor src, SkPMColor dst) { |
| 539 | int sr = SkGetPackedR32(src); |
| 540 | int sg = SkGetPackedG32(src); |
| 541 | int sb = SkGetPackedB32(src); |
| 542 | int sa = SkGetPackedA32(src); |
| 543 | |
| 544 | int dr = SkGetPackedR32(dst); |
| 545 | int dg = SkGetPackedG32(dst); |
| 546 | int db = SkGetPackedB32(dst); |
| 547 | int da = SkGetPackedA32(dst); |
| 548 | int Dr, Dg, Db; |
| 549 | |
| 550 | if(sa && da) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 551 | Dr = dr * sa; |
| 552 | Dg = dg * sa; |
| 553 | Db = db * sa; |
| 554 | SetSat(&Dr, &Dg, &Db, Sat(sr, sg, sb) * da); |
| 555 | SetLum(&Dr, &Dg, &Db, sa * da, Lum(dr, dg, db) * sa); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 556 | } else { |
| 557 | Dr = 0; |
| 558 | Dg = 0; |
| 559 | Db = 0; |
| 560 | } |
| 561 | |
| 562 | int a = srcover_byte(sa, da); |
| 563 | int r = blendfunc_nonsep_byte(sr, dr, sa, da, Dr); |
| 564 | int g = blendfunc_nonsep_byte(sg, dg, sa, da, Dg); |
| 565 | int b = blendfunc_nonsep_byte(sb, db, sa, da, Db); |
| 566 | return SkPackARGB32(a, r, g, b); |
| 567 | } |
| 568 | |
| 569 | // kColor_Mode |
| 570 | // B(Cb, Cs) = SetLum(Cs, Lum(Cb)) |
skia.committer@gmail.com | 6433435 | 2013-03-06 07:01:46 +0000 | [diff] [blame] | 571 | // Create a color with the hue and saturation of the source color and the luminosity of the backdrop color. |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 572 | static SkPMColor color_modeproc(SkPMColor src, SkPMColor dst) { |
| 573 | int sr = SkGetPackedR32(src); |
| 574 | int sg = SkGetPackedG32(src); |
| 575 | int sb = SkGetPackedB32(src); |
| 576 | int sa = SkGetPackedA32(src); |
| 577 | |
| 578 | int dr = SkGetPackedR32(dst); |
| 579 | int dg = SkGetPackedG32(dst); |
| 580 | int db = SkGetPackedB32(dst); |
| 581 | int da = SkGetPackedA32(dst); |
| 582 | int Sr, Sg, Sb; |
| 583 | |
| 584 | if(sa && da) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 585 | Sr = sr * da; |
| 586 | Sg = sg * da; |
| 587 | Sb = sb * da; |
| 588 | SetLum(&Sr, &Sg, &Sb, sa * da, Lum(dr, dg, db) * sa); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 589 | } else { |
| 590 | Sr = 0; |
| 591 | Sg = 0; |
| 592 | Sb = 0; |
| 593 | } |
| 594 | |
| 595 | int a = srcover_byte(sa, da); |
| 596 | int r = blendfunc_nonsep_byte(sr, dr, sa, da, Sr); |
| 597 | int g = blendfunc_nonsep_byte(sg, dg, sa, da, Sg); |
| 598 | int b = blendfunc_nonsep_byte(sb, db, sa, da, Sb); |
| 599 | return SkPackARGB32(a, r, g, b); |
| 600 | } |
| 601 | |
| 602 | // kLuminosity_Mode |
| 603 | // B(Cb, Cs) = SetLum(Cb, Lum(Cs)) |
skia.committer@gmail.com | 6433435 | 2013-03-06 07:01:46 +0000 | [diff] [blame] | 604 | // Create a color with the luminosity of the source color and the hue and saturation of the backdrop color. |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 605 | static SkPMColor luminosity_modeproc(SkPMColor src, SkPMColor dst) { |
| 606 | int sr = SkGetPackedR32(src); |
| 607 | int sg = SkGetPackedG32(src); |
| 608 | int sb = SkGetPackedB32(src); |
| 609 | int sa = SkGetPackedA32(src); |
| 610 | |
| 611 | int dr = SkGetPackedR32(dst); |
| 612 | int dg = SkGetPackedG32(dst); |
| 613 | int db = SkGetPackedB32(dst); |
| 614 | int da = SkGetPackedA32(dst); |
| 615 | int Dr, Dg, Db; |
| 616 | |
| 617 | if(sa && da) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 618 | Dr = dr * sa; |
| 619 | Dg = dg * sa; |
| 620 | Db = db * sa; |
| 621 | SetLum(&Dr, &Dg, &Db, sa * da, Lum(sr, sg, sb) * da); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 622 | } else { |
| 623 | Dr = 0; |
| 624 | Dg = 0; |
| 625 | Db = 0; |
| 626 | } |
| 627 | |
| 628 | int a = srcover_byte(sa, da); |
| 629 | int r = blendfunc_nonsep_byte(sr, dr, sa, da, Dr); |
| 630 | int g = blendfunc_nonsep_byte(sg, dg, sa, da, Dg); |
| 631 | int b = blendfunc_nonsep_byte(sb, db, sa, da, Db); |
| 632 | return SkPackARGB32(a, r, g, b); |
| 633 | } |
| 634 | |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 635 | const ProcCoeff gProcCoeffs[] = { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 636 | { clear_modeproc, SkXfermode::kZero_Coeff, SkXfermode::kZero_Coeff }, |
| 637 | { src_modeproc, SkXfermode::kOne_Coeff, SkXfermode::kZero_Coeff }, |
| 638 | { dst_modeproc, SkXfermode::kZero_Coeff, SkXfermode::kOne_Coeff }, |
| 639 | { srcover_modeproc, SkXfermode::kOne_Coeff, SkXfermode::kISA_Coeff }, |
| 640 | { dstover_modeproc, SkXfermode::kIDA_Coeff, SkXfermode::kOne_Coeff }, |
| 641 | { srcin_modeproc, SkXfermode::kDA_Coeff, SkXfermode::kZero_Coeff }, |
| 642 | { dstin_modeproc, SkXfermode::kZero_Coeff, SkXfermode::kSA_Coeff }, |
| 643 | { srcout_modeproc, SkXfermode::kIDA_Coeff, SkXfermode::kZero_Coeff }, |
| 644 | { dstout_modeproc, SkXfermode::kZero_Coeff, SkXfermode::kISA_Coeff }, |
| 645 | { srcatop_modeproc, SkXfermode::kDA_Coeff, SkXfermode::kISA_Coeff }, |
| 646 | { dstatop_modeproc, SkXfermode::kIDA_Coeff, SkXfermode::kSA_Coeff }, |
| 647 | { xor_modeproc, SkXfermode::kIDA_Coeff, SkXfermode::kISA_Coeff }, |
| 648 | |
reed@google.com | 521e34e | 2011-04-12 18:55:21 +0000 | [diff] [blame] | 649 | { plus_modeproc, SkXfermode::kOne_Coeff, SkXfermode::kOne_Coeff }, |
reed@google.com | 8d3cd7a | 2013-01-30 21:36:11 +0000 | [diff] [blame] | 650 | { modulate_modeproc,SkXfermode::kZero_Coeff, SkXfermode::kSC_Coeff }, |
bsalomon@google.com | b0091b8 | 2013-04-15 15:16:47 +0000 | [diff] [blame] | 651 | { screen_modeproc, SkXfermode::kOne_Coeff, SkXfermode::kISC_Coeff }, |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 652 | { overlay_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 653 | { darken_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 654 | { lighten_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 655 | { colordodge_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 656 | { colorburn_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 657 | { hardlight_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 658 | { softlight_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 659 | { difference_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 660 | { exclusion_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
reed@google.com | 25cfa69 | 2013-02-04 20:06:00 +0000 | [diff] [blame] | 661 | { multiply_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 662 | { hue_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 663 | { saturation_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 664 | { color_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 665 | { luminosity_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 666 | }; |
| 667 | |
| 668 | /////////////////////////////////////////////////////////////////////////////// |
| 669 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 670 | bool SkXfermode::asMode(Mode* mode) const { |
reed@google.com | c0d4aa2 | 2011-04-13 21:12:04 +0000 | [diff] [blame] | 671 | return false; |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 672 | } |
| 673 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 674 | bool SkXfermode::asFragmentProcessor(GrFragmentProcessor**, GrTexture*) const { |
senorblanco@chromium.org | 1a6382f | 2013-10-23 18:41:36 +0000 | [diff] [blame] | 675 | return false; |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 676 | } |
| 677 | |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 678 | bool SkXfermode::asXPFactory(GrXPFactory**) const { |
| 679 | return false; |
| 680 | } |
| 681 | |
| 682 | |
| 683 | #if SK_SUPPORT_GPU |
| 684 | #include "effects/GrPorterDuffXferProcessor.h" |
| 685 | |
egdaniel | 5813616 | 2015-01-20 10:19:22 -0800 | [diff] [blame] | 686 | bool SkXfermode::AsXPFactory(SkXfermode* xfermode, GrXPFactory** xpf) { |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 687 | if (NULL == xfermode) { |
egdaniel | 5813616 | 2015-01-20 10:19:22 -0800 | [diff] [blame] | 688 | if (xpf) { |
| 689 | *xpf = GrPorterDuffXPFactory::Create(kSrcOver_Mode); |
| 690 | } |
senorblanco@chromium.org | 1a6382f | 2013-10-23 18:41:36 +0000 | [diff] [blame] | 691 | return true; |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 692 | } else { |
egdaniel | 5813616 | 2015-01-20 10:19:22 -0800 | [diff] [blame] | 693 | return xfermode->asXPFactory(xpf); |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 694 | } |
| 695 | } |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 696 | #else |
egdaniel | 5813616 | 2015-01-20 10:19:22 -0800 | [diff] [blame] | 697 | bool SkXfermode::AsXPFactory(SkXfermode* xfermode, GrXPFactory** xpf) { |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 698 | return false; |
| 699 | } |
| 700 | #endif |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 701 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 702 | SkPMColor SkXfermode::xferColor(SkPMColor src, SkPMColor dst) const{ |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 703 | // no-op. subclasses should override this |
| 704 | return dst; |
| 705 | } |
| 706 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 707 | void SkXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 708 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 709 | const SkAlpha* SK_RESTRICT aa) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 710 | SkASSERT(dst && src && count >= 0); |
| 711 | |
| 712 | if (NULL == aa) { |
| 713 | for (int i = count - 1; i >= 0; --i) { |
| 714 | dst[i] = this->xferColor(src[i], dst[i]); |
| 715 | } |
| 716 | } else { |
| 717 | for (int i = count - 1; i >= 0; --i) { |
| 718 | unsigned a = aa[i]; |
| 719 | if (0 != a) { |
| 720 | SkPMColor dstC = dst[i]; |
| 721 | SkPMColor C = this->xferColor(src[i], dstC); |
| 722 | if (0xFF != a) { |
| 723 | C = SkFourByteInterp(C, dstC, a); |
| 724 | } |
| 725 | dst[i] = C; |
| 726 | } |
| 727 | } |
| 728 | } |
| 729 | } |
| 730 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 731 | void SkXfermode::xfer16(uint16_t* dst, |
| 732 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 733 | const SkAlpha* SK_RESTRICT aa) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 734 | SkASSERT(dst && src && count >= 0); |
| 735 | |
| 736 | if (NULL == aa) { |
| 737 | for (int i = count - 1; i >= 0; --i) { |
| 738 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| 739 | dst[i] = SkPixel32ToPixel16_ToU16(this->xferColor(src[i], dstC)); |
| 740 | } |
| 741 | } else { |
| 742 | for (int i = count - 1; i >= 0; --i) { |
| 743 | unsigned a = aa[i]; |
| 744 | if (0 != a) { |
| 745 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| 746 | SkPMColor C = this->xferColor(src[i], dstC); |
| 747 | if (0xFF != a) { |
| 748 | C = SkFourByteInterp(C, dstC, a); |
| 749 | } |
| 750 | dst[i] = SkPixel32ToPixel16_ToU16(C); |
| 751 | } |
| 752 | } |
| 753 | } |
| 754 | } |
| 755 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 756 | void SkXfermode::xferA8(SkAlpha* SK_RESTRICT dst, |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 757 | const SkPMColor src[], int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 758 | const SkAlpha* SK_RESTRICT aa) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 759 | SkASSERT(dst && src && count >= 0); |
| 760 | |
| 761 | if (NULL == aa) { |
| 762 | for (int i = count - 1; i >= 0; --i) { |
| 763 | SkPMColor res = this->xferColor(src[i], (dst[i] << SK_A32_SHIFT)); |
| 764 | dst[i] = SkToU8(SkGetPackedA32(res)); |
| 765 | } |
| 766 | } else { |
| 767 | for (int i = count - 1; i >= 0; --i) { |
| 768 | unsigned a = aa[i]; |
| 769 | if (0 != a) { |
| 770 | SkAlpha dstA = dst[i]; |
| 771 | unsigned A = SkGetPackedA32(this->xferColor(src[i], |
| 772 | (SkPMColor)(dstA << SK_A32_SHIFT))); |
| 773 | if (0xFF != a) { |
| 774 | A = SkAlphaBlend(A, dstA, SkAlpha255To256(a)); |
| 775 | } |
| 776 | dst[i] = SkToU8(A); |
| 777 | } |
| 778 | } |
| 779 | } |
| 780 | } |
| 781 | |
egdaniel | dcfb7cf | 2015-01-22 06:52:29 -0800 | [diff] [blame] | 782 | bool SkXfermode::supportsCoverageAsAlpha() const { |
| 783 | return false; |
| 784 | } |
| 785 | |
| 786 | bool SkXfermode::isOpaque(SkXfermode::SrcColorOpacity opacityType) const { |
| 787 | return false; |
| 788 | } |
| 789 | |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 790 | /////////////////////////////////////////////////////////////////////////////// |
| 791 | /////////////////////////////////////////////////////////////////////////////// |
| 792 | |
reed | 9fa60da | 2014-08-21 07:59:51 -0700 | [diff] [blame] | 793 | SkFlattenable* SkProcCoeffXfermode::CreateProc(SkReadBuffer& buffer) { |
| 794 | uint32_t mode32 = buffer.read32(); |
senorblanco | 0f7197b | 2014-09-24 11:09:38 -0700 | [diff] [blame] | 795 | if (!buffer.validate(mode32 < SK_ARRAY_COUNT(gProcCoeffs))) { |
reed | 9fa60da | 2014-08-21 07:59:51 -0700 | [diff] [blame] | 796 | return NULL; |
| 797 | } |
| 798 | return SkXfermode::Create((SkXfermode::Mode)mode32); |
| 799 | } |
| 800 | |
| 801 | void SkProcCoeffXfermode::flatten(SkWriteBuffer& buffer) const { |
| 802 | buffer.write32(fMode); |
| 803 | } |
reed@google.com | 52314f8 | 2013-11-21 21:05:06 +0000 | [diff] [blame] | 804 | |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 805 | bool SkProcCoeffXfermode::asMode(Mode* mode) const { |
| 806 | if (mode) { |
| 807 | *mode = fMode; |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 808 | } |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 809 | return true; |
| 810 | } |
commit-bot@chromium.org | 84cc1eb | 2013-10-08 16:47:22 +0000 | [diff] [blame] | 811 | |
egdaniel | dcfb7cf | 2015-01-22 06:52:29 -0800 | [diff] [blame] | 812 | bool SkProcCoeffXfermode::supportsCoverageAsAlpha() const { |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 813 | if (CANNOT_USE_COEFF == fSrcCoeff) { |
djsollen@google.com | 6f980c6 | 2013-10-08 16:59:53 +0000 | [diff] [blame] | 814 | return false; |
| 815 | } |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 816 | |
egdaniel | dcfb7cf | 2015-01-22 06:52:29 -0800 | [diff] [blame] | 817 | switch (fDstCoeff) { |
| 818 | case SkXfermode::kOne_Coeff: |
| 819 | case SkXfermode::kISA_Coeff: |
| 820 | case SkXfermode::kISC_Coeff: |
| 821 | return true; |
| 822 | default: |
| 823 | return false; |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 824 | } |
egdaniel | dcfb7cf | 2015-01-22 06:52:29 -0800 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | bool SkProcCoeffXfermode::isOpaque(SkXfermode::SrcColorOpacity opacityType) const { |
| 828 | if (CANNOT_USE_COEFF == fSrcCoeff) { |
| 829 | return false; |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 830 | } |
egdaniel | dcfb7cf | 2015-01-22 06:52:29 -0800 | [diff] [blame] | 831 | |
| 832 | if (SkXfermode::kDA_Coeff == fSrcCoeff || SkXfermode::kDC_Coeff == fSrcCoeff || |
| 833 | SkXfermode::kIDA_Coeff == fSrcCoeff || SkXfermode::kIDC_Coeff == fSrcCoeff) { |
| 834 | return false; |
| 835 | } |
| 836 | |
| 837 | switch (fDstCoeff) { |
| 838 | case SkXfermode::kZero_Coeff: |
| 839 | return true; |
| 840 | case SkXfermode::kISA_Coeff: |
| 841 | return SkXfermode::kOpaque_SrcColorOpacity == opacityType; |
| 842 | case SkXfermode::kSA_Coeff: |
| 843 | return SkXfermode::kTransparentBlack_SrcColorOpacity == opacityType || |
| 844 | SkXfermode::kTransparentAlpha_SrcColorOpacity == opacityType; |
| 845 | case SkXfermode::kSC_Coeff: |
| 846 | return SkXfermode::kTransparentBlack_SrcColorOpacity == opacityType; |
| 847 | default: |
| 848 | return false; |
| 849 | } |
| 850 | |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 851 | } |
| 852 | |
commit-bot@chromium.org | cc277b7 | 2014-04-17 15:19:32 +0000 | [diff] [blame] | 853 | void SkProcCoeffXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 854 | const SkPMColor* SK_RESTRICT src, int count, |
| 855 | const SkAlpha* SK_RESTRICT aa) const { |
| 856 | SkASSERT(dst && src && count >= 0); |
skia.committer@gmail.com | 60bd751 | 2014-04-18 03:03:54 +0000 | [diff] [blame] | 857 | |
commit-bot@chromium.org | cc277b7 | 2014-04-17 15:19:32 +0000 | [diff] [blame] | 858 | SkXfermodeProc proc = fProc; |
skia.committer@gmail.com | 60bd751 | 2014-04-18 03:03:54 +0000 | [diff] [blame] | 859 | |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 860 | if (proc) { |
commit-bot@chromium.org | cc277b7 | 2014-04-17 15:19:32 +0000 | [diff] [blame] | 861 | if (NULL == aa) { |
| 862 | for (int i = count - 1; i >= 0; --i) { |
| 863 | dst[i] = proc(src[i], dst[i]); |
| 864 | } |
| 865 | } else { |
| 866 | for (int i = count - 1; i >= 0; --i) { |
| 867 | unsigned a = aa[i]; |
| 868 | if (0 != a) { |
| 869 | SkPMColor dstC = dst[i]; |
| 870 | SkPMColor C = proc(src[i], dstC); |
| 871 | if (a != 0xFF) { |
| 872 | C = SkFourByteInterp(C, dstC, a); |
| 873 | } |
| 874 | dst[i] = C; |
| 875 | } |
| 876 | } |
| 877 | } |
| 878 | } |
| 879 | } |
| 880 | |
| 881 | void SkProcCoeffXfermode::xfer16(uint16_t* SK_RESTRICT dst, |
| 882 | const SkPMColor* SK_RESTRICT src, int count, |
| 883 | const SkAlpha* SK_RESTRICT aa) const { |
| 884 | SkASSERT(dst && src && count >= 0); |
skia.committer@gmail.com | 60bd751 | 2014-04-18 03:03:54 +0000 | [diff] [blame] | 885 | |
commit-bot@chromium.org | cc277b7 | 2014-04-17 15:19:32 +0000 | [diff] [blame] | 886 | SkXfermodeProc proc = fProc; |
skia.committer@gmail.com | 60bd751 | 2014-04-18 03:03:54 +0000 | [diff] [blame] | 887 | |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 888 | if (proc) { |
commit-bot@chromium.org | cc277b7 | 2014-04-17 15:19:32 +0000 | [diff] [blame] | 889 | if (NULL == aa) { |
| 890 | for (int i = count - 1; i >= 0; --i) { |
| 891 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| 892 | dst[i] = SkPixel32ToPixel16_ToU16(proc(src[i], dstC)); |
| 893 | } |
| 894 | } else { |
| 895 | for (int i = count - 1; i >= 0; --i) { |
| 896 | unsigned a = aa[i]; |
| 897 | if (0 != a) { |
| 898 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| 899 | SkPMColor C = proc(src[i], dstC); |
| 900 | if (0xFF != a) { |
| 901 | C = SkFourByteInterp(C, dstC, a); |
| 902 | } |
| 903 | dst[i] = SkPixel32ToPixel16_ToU16(C); |
| 904 | } |
| 905 | } |
| 906 | } |
| 907 | } |
| 908 | } |
| 909 | |
| 910 | void SkProcCoeffXfermode::xferA8(SkAlpha* SK_RESTRICT dst, |
| 911 | const SkPMColor* SK_RESTRICT src, int count, |
| 912 | const SkAlpha* SK_RESTRICT aa) const { |
| 913 | SkASSERT(dst && src && count >= 0); |
skia.committer@gmail.com | 60bd751 | 2014-04-18 03:03:54 +0000 | [diff] [blame] | 914 | |
commit-bot@chromium.org | cc277b7 | 2014-04-17 15:19:32 +0000 | [diff] [blame] | 915 | SkXfermodeProc proc = fProc; |
skia.committer@gmail.com | 60bd751 | 2014-04-18 03:03:54 +0000 | [diff] [blame] | 916 | |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 917 | if (proc) { |
commit-bot@chromium.org | cc277b7 | 2014-04-17 15:19:32 +0000 | [diff] [blame] | 918 | if (NULL == aa) { |
| 919 | for (int i = count - 1; i >= 0; --i) { |
| 920 | SkPMColor res = proc(src[i], dst[i] << SK_A32_SHIFT); |
| 921 | dst[i] = SkToU8(SkGetPackedA32(res)); |
| 922 | } |
| 923 | } else { |
| 924 | for (int i = count - 1; i >= 0; --i) { |
| 925 | unsigned a = aa[i]; |
| 926 | if (0 != a) { |
| 927 | SkAlpha dstA = dst[i]; |
| 928 | SkPMColor res = proc(src[i], dstA << SK_A32_SHIFT); |
| 929 | unsigned A = SkGetPackedA32(res); |
| 930 | if (0xFF != a) { |
| 931 | A = SkAlphaBlend(A, dstA, SkAlpha255To256(a)); |
| 932 | } |
| 933 | dst[i] = SkToU8(A); |
| 934 | } |
| 935 | } |
| 936 | } |
| 937 | } |
| 938 | } |
| 939 | |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 940 | #if SK_SUPPORT_GPU |
egdaniel | 0063a9b | 2015-01-15 10:52:32 -0800 | [diff] [blame] | 941 | #include "effects/GrCustomXfermode.h" |
| 942 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 943 | bool SkProcCoeffXfermode::asFragmentProcessor(GrFragmentProcessor** fp, |
| 944 | GrTexture* background) const { |
egdaniel | 0063a9b | 2015-01-15 10:52:32 -0800 | [diff] [blame] | 945 | if (GrCustomXfermode::IsSupportedMode(fMode)) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 946 | if (fp) { |
egdaniel | 0063a9b | 2015-01-15 10:52:32 -0800 | [diff] [blame] | 947 | *fp = GrCustomXfermode::CreateFP(fMode, background); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 948 | SkASSERT(*fp); |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 949 | } |
| 950 | return true; |
| 951 | } |
| 952 | return false; |
| 953 | } |
egdaniel | 54f0e9d | 2015-01-16 06:29:47 -0800 | [diff] [blame] | 954 | |
| 955 | bool SkProcCoeffXfermode::asXPFactory(GrXPFactory** xp) const { |
egdaniel | 5813616 | 2015-01-20 10:19:22 -0800 | [diff] [blame] | 956 | if (CANNOT_USE_COEFF != fSrcCoeff) { |
| 957 | if (xp) { |
| 958 | *xp = GrPorterDuffXPFactory::Create(fMode); |
| 959 | SkASSERT(*xp); |
| 960 | } |
| 961 | return true; |
| 962 | } |
| 963 | |
egdaniel | 54f0e9d | 2015-01-16 06:29:47 -0800 | [diff] [blame] | 964 | if (GrCustomXfermode::IsSupportedMode(fMode)) { |
| 965 | if (xp) { |
| 966 | *xp = GrCustomXfermode::CreateXPFactory(fMode); |
| 967 | SkASSERT(*xp); |
| 968 | } |
| 969 | return true; |
| 970 | } |
| 971 | return false; |
| 972 | } |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 973 | #endif |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 974 | |
commit-bot@chromium.org | d7aaf60 | 2013-04-01 12:51:34 +0000 | [diff] [blame] | 975 | const char* SkXfermode::ModeName(Mode mode) { |
| 976 | SkASSERT((unsigned) mode <= (unsigned)kLastMode); |
| 977 | const char* gModeStrings[] = { |
| 978 | "Clear", "Src", "Dst", "SrcOver", "DstOver", "SrcIn", "DstIn", |
| 979 | "SrcOut", "DstOut", "SrcATop", "DstATop", "Xor", "Plus", |
| 980 | "Modulate", "Screen", "Overlay", "Darken", "Lighten", "ColorDodge", |
| 981 | "ColorBurn", "HardLight", "SoftLight", "Difference", "Exclusion", |
| 982 | "Multiply", "Hue", "Saturation", "Color", "Luminosity" |
| 983 | }; |
| 984 | return gModeStrings[mode]; |
| 985 | SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gModeStrings) == kLastMode + 1, mode_count); |
| 986 | } |
| 987 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 988 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 989 | void SkProcCoeffXfermode::toString(SkString* str) const { |
| 990 | str->append("SkProcCoeffXfermode: "); |
| 991 | |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 992 | str->append("mode: "); |
commit-bot@chromium.org | d7aaf60 | 2013-04-01 12:51:34 +0000 | [diff] [blame] | 993 | str->append(ModeName(fMode)); |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 994 | |
| 995 | static const char* gCoeffStrings[kCoeffCount] = { |
skia.committer@gmail.com | 98ded84 | 2013-01-23 07:06:17 +0000 | [diff] [blame] | 996 | "Zero", "One", "SC", "ISC", "DC", "IDC", "SA", "ISA", "DA", "IDA" |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 997 | }; |
| 998 | |
| 999 | str->append(" src: "); |
| 1000 | if (CANNOT_USE_COEFF == fSrcCoeff) { |
| 1001 | str->append("can't use"); |
| 1002 | } else { |
| 1003 | str->append(gCoeffStrings[fSrcCoeff]); |
| 1004 | } |
| 1005 | |
| 1006 | str->append(" dst: "); |
| 1007 | if (CANNOT_USE_COEFF == fDstCoeff) { |
| 1008 | str->append("can't use"); |
| 1009 | } else { |
| 1010 | str->append(gCoeffStrings[fDstCoeff]); |
| 1011 | } |
| 1012 | } |
| 1013 | #endif |
| 1014 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1015 | /////////////////////////////////////////////////////////////////////////////// |
| 1016 | |
| 1017 | class SkClearXfermode : public SkProcCoeffXfermode { |
| 1018 | public: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1019 | static SkClearXfermode* Create(const ProcCoeff& rec) { |
| 1020 | return SkNEW_ARGS(SkClearXfermode, (rec)); |
| 1021 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1022 | |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 1023 | void xfer32(SkPMColor*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
| 1024 | void xferA8(SkAlpha*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1025 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1026 | SK_TO_STRING_OVERRIDE() |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1027 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1028 | private: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1029 | SkClearXfermode(const ProcCoeff& rec) : SkProcCoeffXfermode(rec, kClear_Mode) {} |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1030 | |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1031 | typedef SkProcCoeffXfermode INHERITED; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1032 | }; |
| 1033 | |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1034 | void SkClearXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 1035 | const SkPMColor* SK_RESTRICT, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1036 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1037 | SkASSERT(dst && count >= 0); |
| 1038 | |
| 1039 | if (NULL == aa) { |
| 1040 | memset(dst, 0, count << 2); |
| 1041 | } else { |
| 1042 | for (int i = count - 1; i >= 0; --i) { |
| 1043 | unsigned a = aa[i]; |
| 1044 | if (0xFF == a) { |
| 1045 | dst[i] = 0; |
| 1046 | } else if (a != 0) { |
| 1047 | dst[i] = SkAlphaMulQ(dst[i], SkAlpha255To256(255 - a)); |
| 1048 | } |
| 1049 | } |
| 1050 | } |
| 1051 | } |
| 1052 | void SkClearXfermode::xferA8(SkAlpha* SK_RESTRICT dst, |
| 1053 | const SkPMColor* SK_RESTRICT, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1054 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1055 | SkASSERT(dst && count >= 0); |
| 1056 | |
| 1057 | if (NULL == aa) { |
| 1058 | memset(dst, 0, count); |
| 1059 | } else { |
| 1060 | for (int i = count - 1; i >= 0; --i) { |
| 1061 | unsigned a = aa[i]; |
| 1062 | if (0xFF == a) { |
| 1063 | dst[i] = 0; |
| 1064 | } else if (0 != a) { |
| 1065 | dst[i] = SkAlphaMulAlpha(dst[i], 255 - a); |
| 1066 | } |
| 1067 | } |
| 1068 | } |
| 1069 | } |
| 1070 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1071 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1072 | void SkClearXfermode::toString(SkString* str) const { |
| 1073 | this->INHERITED::toString(str); |
| 1074 | } |
| 1075 | #endif |
| 1076 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1077 | /////////////////////////////////////////////////////////////////////////////// |
| 1078 | |
| 1079 | class SkSrcXfermode : public SkProcCoeffXfermode { |
| 1080 | public: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1081 | static SkSrcXfermode* Create(const ProcCoeff& rec) { |
| 1082 | return SkNEW_ARGS(SkSrcXfermode, (rec)); |
| 1083 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1084 | |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 1085 | void xfer32(SkPMColor*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
| 1086 | void xferA8(SkAlpha*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1087 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1088 | SK_TO_STRING_OVERRIDE() |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1089 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1090 | private: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1091 | SkSrcXfermode(const ProcCoeff& rec) : SkProcCoeffXfermode(rec, kSrc_Mode) {} |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1092 | typedef SkProcCoeffXfermode INHERITED; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1093 | }; |
| 1094 | |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1095 | void SkSrcXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 1096 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1097 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1098 | SkASSERT(dst && src && count >= 0); |
| 1099 | |
| 1100 | if (NULL == aa) { |
| 1101 | memcpy(dst, src, count << 2); |
| 1102 | } else { |
| 1103 | for (int i = count - 1; i >= 0; --i) { |
| 1104 | unsigned a = aa[i]; |
| 1105 | if (a == 0xFF) { |
| 1106 | dst[i] = src[i]; |
| 1107 | } else if (a != 0) { |
| 1108 | dst[i] = SkFourByteInterp(src[i], dst[i], a); |
| 1109 | } |
| 1110 | } |
| 1111 | } |
| 1112 | } |
| 1113 | |
| 1114 | void SkSrcXfermode::xferA8(SkAlpha* SK_RESTRICT dst, |
| 1115 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1116 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1117 | SkASSERT(dst && src && count >= 0); |
| 1118 | |
| 1119 | if (NULL == aa) { |
| 1120 | for (int i = count - 1; i >= 0; --i) { |
| 1121 | dst[i] = SkToU8(SkGetPackedA32(src[i])); |
| 1122 | } |
| 1123 | } else { |
| 1124 | for (int i = count - 1; i >= 0; --i) { |
| 1125 | unsigned a = aa[i]; |
| 1126 | if (0 != a) { |
| 1127 | unsigned srcA = SkGetPackedA32(src[i]); |
| 1128 | if (a == 0xFF) { |
| 1129 | dst[i] = SkToU8(srcA); |
| 1130 | } else { |
| 1131 | dst[i] = SkToU8(SkAlphaBlend(srcA, dst[i], a)); |
| 1132 | } |
| 1133 | } |
| 1134 | } |
| 1135 | } |
| 1136 | } |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1137 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1138 | void SkSrcXfermode::toString(SkString* str) const { |
| 1139 | this->INHERITED::toString(str); |
| 1140 | } |
| 1141 | #endif |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1142 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1143 | /////////////////////////////////////////////////////////////////////////////// |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1144 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1145 | class SkDstInXfermode : public SkProcCoeffXfermode { |
| 1146 | public: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1147 | static SkDstInXfermode* Create(const ProcCoeff& rec) { |
| 1148 | return SkNEW_ARGS(SkDstInXfermode, (rec)); |
| 1149 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1150 | |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 1151 | void xfer32(SkPMColor*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1152 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1153 | SK_TO_STRING_OVERRIDE() |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1154 | |
| 1155 | private: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1156 | SkDstInXfermode(const ProcCoeff& rec) : SkProcCoeffXfermode(rec, kDstIn_Mode) {} |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1157 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1158 | typedef SkProcCoeffXfermode INHERITED; |
| 1159 | }; |
| 1160 | |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1161 | void SkDstInXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 1162 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1163 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1164 | SkASSERT(dst && src); |
| 1165 | |
| 1166 | if (count <= 0) { |
| 1167 | return; |
| 1168 | } |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 1169 | if (aa) { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1170 | return this->INHERITED::xfer32(dst, src, count, aa); |
| 1171 | } |
| 1172 | |
| 1173 | do { |
| 1174 | unsigned a = SkGetPackedA32(*src); |
| 1175 | *dst = SkAlphaMulQ(*dst, SkAlpha255To256(a)); |
| 1176 | dst++; |
| 1177 | src++; |
| 1178 | } while (--count != 0); |
| 1179 | } |
| 1180 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1181 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1182 | void SkDstInXfermode::toString(SkString* str) const { |
| 1183 | this->INHERITED::toString(str); |
| 1184 | } |
| 1185 | #endif |
| 1186 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1187 | /////////////////////////////////////////////////////////////////////////////// |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1188 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1189 | class SkDstOutXfermode : public SkProcCoeffXfermode { |
| 1190 | public: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1191 | static SkDstOutXfermode* Create(const ProcCoeff& rec) { |
| 1192 | return SkNEW_ARGS(SkDstOutXfermode, (rec)); |
| 1193 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1194 | |
mtklein | 72c9faa | 2015-01-09 10:06:39 -0800 | [diff] [blame] | 1195 | void xfer32(SkPMColor*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1196 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1197 | SK_TO_STRING_OVERRIDE() |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1198 | |
| 1199 | private: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1200 | SkDstOutXfermode(const ProcCoeff& rec) : SkProcCoeffXfermode(rec, kDstOut_Mode) {} |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1201 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1202 | typedef SkProcCoeffXfermode INHERITED; |
| 1203 | }; |
| 1204 | |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1205 | void SkDstOutXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 1206 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1207 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1208 | SkASSERT(dst && src); |
| 1209 | |
| 1210 | if (count <= 0) { |
| 1211 | return; |
| 1212 | } |
bsalomon | 49f085d | 2014-09-05 13:34:00 -0700 | [diff] [blame] | 1213 | if (aa) { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1214 | return this->INHERITED::xfer32(dst, src, count, aa); |
| 1215 | } |
| 1216 | |
| 1217 | do { |
| 1218 | unsigned a = SkGetPackedA32(*src); |
| 1219 | *dst = SkAlphaMulQ(*dst, SkAlpha255To256(255 - a)); |
| 1220 | dst++; |
| 1221 | src++; |
| 1222 | } while (--count != 0); |
| 1223 | } |
| 1224 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1225 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1226 | void SkDstOutXfermode::toString(SkString* str) const { |
| 1227 | this->INHERITED::toString(str); |
| 1228 | } |
| 1229 | #endif |
| 1230 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1231 | /////////////////////////////////////////////////////////////////////////////// |
| 1232 | |
commit-bot@chromium.org | 97de357 | 2014-05-29 20:13:22 +0000 | [diff] [blame] | 1233 | extern SkProcCoeffXfermode* SkPlatformXfermodeFactory(const ProcCoeff& rec, SkXfermode::Mode mode); |
commit-bot@chromium.org | d611864 | 2013-12-06 11:32:27 +0000 | [diff] [blame] | 1234 | extern SkXfermodeProc SkPlatformXfermodeProcFactory(SkXfermode::Mode mode); |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 1235 | |
commit-bot@chromium.org | 97de357 | 2014-05-29 20:13:22 +0000 | [diff] [blame] | 1236 | // Technically, can't be static and passed as a template parameter. So we use anonymous namespace. |
| 1237 | namespace { |
| 1238 | SkXfermode* create_mode(int iMode) { |
| 1239 | SkXfermode::Mode mode = (SkXfermode::Mode)iMode; |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 1240 | |
| 1241 | ProcCoeff rec = gProcCoeffs[mode]; |
| 1242 | SkXfermodeProc pp = SkPlatformXfermodeProcFactory(mode); |
| 1243 | if (pp != NULL) { |
| 1244 | rec.fProc = pp; |
| 1245 | } |
| 1246 | |
| 1247 | SkXfermode* xfer = NULL; |
| 1248 | // check if we have a platform optim for that |
| 1249 | SkProcCoeffXfermode* xfm = SkPlatformXfermodeFactory(rec, mode); |
| 1250 | if (xfm != NULL) { |
| 1251 | xfer = xfm; |
| 1252 | } else { |
| 1253 | // All modes can in theory be represented by the ProcCoeff rec, since |
| 1254 | // it contains function ptrs. However, a few modes are both simple and |
| 1255 | // commonly used, so we call those out for their own subclasses here. |
| 1256 | switch (mode) { |
| 1257 | case SkXfermode::kClear_Mode: |
| 1258 | xfer = SkClearXfermode::Create(rec); |
| 1259 | break; |
| 1260 | case SkXfermode::kSrc_Mode: |
| 1261 | xfer = SkSrcXfermode::Create(rec); |
| 1262 | break; |
| 1263 | case SkXfermode::kSrcOver_Mode: |
| 1264 | SkASSERT(false); // should not land here |
| 1265 | break; |
| 1266 | case SkXfermode::kDstIn_Mode: |
| 1267 | xfer = SkDstInXfermode::Create(rec); |
| 1268 | break; |
| 1269 | case SkXfermode::kDstOut_Mode: |
| 1270 | xfer = SkDstOutXfermode::Create(rec); |
| 1271 | break; |
| 1272 | default: |
| 1273 | // no special-case, just rely in the rec and its function-ptrs |
reed | 9fa60da | 2014-08-21 07:59:51 -0700 | [diff] [blame] | 1274 | xfer = SkNEW_ARGS(SkProcCoeffXfermode, (rec, mode)); |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 1275 | break; |
| 1276 | } |
| 1277 | } |
commit-bot@chromium.org | 97de357 | 2014-05-29 20:13:22 +0000 | [diff] [blame] | 1278 | return xfer; |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 1279 | } |
commit-bot@chromium.org | 97de357 | 2014-05-29 20:13:22 +0000 | [diff] [blame] | 1280 | } // namespace |
| 1281 | |
mtklein | 148ec59 | 2014-10-13 13:17:56 -0700 | [diff] [blame] | 1282 | SK_DECLARE_STATIC_LAZY_PTR_ARRAY(SkXfermode, cached, SkXfermode::kLastMode + 1, create_mode); |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 1283 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1284 | SkXfermode* SkXfermode::Create(Mode mode) { |
| 1285 | SkASSERT(SK_ARRAY_COUNT(gProcCoeffs) == kModeCount); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1286 | |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1287 | if ((unsigned)mode >= kModeCount) { |
| 1288 | // report error |
| 1289 | return NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1290 | } |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1291 | |
commit-bot@chromium.org | 97de357 | 2014-05-29 20:13:22 +0000 | [diff] [blame] | 1292 | // Skia's "default" mode is srcover. NULL in SkPaint is interpreted as srcover |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1293 | // so we can just return NULL from the factory. |
| 1294 | if (kSrcOver_Mode == mode) { |
| 1295 | return NULL; |
| 1296 | } |
| 1297 | |
commit-bot@chromium.org | 97de357 | 2014-05-29 20:13:22 +0000 | [diff] [blame] | 1298 | return SkSafeRef(cached[mode]); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1299 | } |
| 1300 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1301 | SkXfermodeProc SkXfermode::GetProc(Mode mode) { |
| 1302 | SkXfermodeProc proc = NULL; |
| 1303 | if ((unsigned)mode < kModeCount) { |
| 1304 | proc = gProcCoeffs[mode].fProc; |
| 1305 | } |
| 1306 | return proc; |
| 1307 | } |
| 1308 | |
| 1309 | bool SkXfermode::ModeAsCoeff(Mode mode, Coeff* src, Coeff* dst) { |
| 1310 | SkASSERT(SK_ARRAY_COUNT(gProcCoeffs) == kModeCount); |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1311 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1312 | if ((unsigned)mode >= (unsigned)kModeCount) { |
| 1313 | // illegal mode parameter |
| 1314 | return false; |
| 1315 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1316 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1317 | const ProcCoeff& rec = gProcCoeffs[mode]; |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1318 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1319 | if (CANNOT_USE_COEFF == rec.fSC) { |
| 1320 | return false; |
| 1321 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1322 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1323 | SkASSERT(CANNOT_USE_COEFF != rec.fDC); |
| 1324 | if (src) { |
| 1325 | *src = rec.fSC; |
| 1326 | } |
| 1327 | if (dst) { |
| 1328 | *dst = rec.fDC; |
| 1329 | } |
| 1330 | return true; |
| 1331 | } |
| 1332 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1333 | bool SkXfermode::AsMode(const SkXfermode* xfer, Mode* mode) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1334 | if (NULL == xfer) { |
| 1335 | if (mode) { |
| 1336 | *mode = kSrcOver_Mode; |
| 1337 | } |
| 1338 | return true; |
| 1339 | } |
reed@google.com | c0d4aa2 | 2011-04-13 21:12:04 +0000 | [diff] [blame] | 1340 | return xfer->asMode(mode); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1341 | } |
| 1342 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1343 | bool SkXfermode::IsMode(const SkXfermode* xfer, Mode mode) { |
mike@reedtribe.org | e303fcf | 2011-11-17 02:16:43 +0000 | [diff] [blame] | 1344 | // if xfer==null then the mode is srcover |
| 1345 | Mode m = kSrcOver_Mode; |
| 1346 | if (xfer && !xfer->asMode(&m)) { |
| 1347 | return false; |
| 1348 | } |
| 1349 | return mode == m; |
| 1350 | } |
| 1351 | |
egdaniel | dcfb7cf | 2015-01-22 06:52:29 -0800 | [diff] [blame] | 1352 | bool SkXfermode::SupportsCoverageAsAlpha(const SkXfermode* xfer) { |
| 1353 | // if xfer is NULL we treat it as srcOver which always supports coverageAsAlpha |
| 1354 | if (!xfer) { |
| 1355 | return true; |
| 1356 | } |
| 1357 | |
| 1358 | return xfer->supportsCoverageAsAlpha(); |
| 1359 | } |
| 1360 | |
| 1361 | bool SkXfermode::IsOpaque(const SkXfermode* xfer, SrcColorOpacity opacityType) { |
| 1362 | // if xfer is NULL we treat it as srcOver which is opaque if our src is opaque |
| 1363 | if (!xfer) { |
| 1364 | return SkXfermode::kOpaque_SrcColorOpacity == opacityType; |
| 1365 | } |
| 1366 | |
| 1367 | return xfer->isOpaque(opacityType); |
| 1368 | } |
| 1369 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1370 | /////////////////////////////////////////////////////////////////////////////// |
| 1371 | //////////// 16bit xfermode procs |
| 1372 | |
| 1373 | #ifdef SK_DEBUG |
| 1374 | static bool require_255(SkPMColor src) { return SkGetPackedA32(src) == 0xFF; } |
| 1375 | static bool require_0(SkPMColor src) { return SkGetPackedA32(src) == 0; } |
| 1376 | #endif |
| 1377 | |
| 1378 | static uint16_t src_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1379 | SkASSERT(require_255(src)); |
| 1380 | return SkPixel32ToPixel16(src); |
| 1381 | } |
| 1382 | |
| 1383 | static uint16_t dst_modeproc16(SkPMColor src, uint16_t dst) { |
| 1384 | return dst; |
| 1385 | } |
| 1386 | |
| 1387 | static uint16_t srcover_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1388 | SkASSERT(require_0(src)); |
| 1389 | return dst; |
| 1390 | } |
| 1391 | |
| 1392 | static uint16_t srcover_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1393 | SkASSERT(require_255(src)); |
| 1394 | return SkPixel32ToPixel16(src); |
| 1395 | } |
| 1396 | |
| 1397 | static uint16_t dstover_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1398 | SkASSERT(require_0(src)); |
| 1399 | return dst; |
| 1400 | } |
| 1401 | |
| 1402 | static uint16_t dstover_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1403 | SkASSERT(require_255(src)); |
| 1404 | return dst; |
| 1405 | } |
| 1406 | |
| 1407 | static uint16_t srcin_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1408 | SkASSERT(require_255(src)); |
| 1409 | return SkPixel32ToPixel16(src); |
| 1410 | } |
| 1411 | |
| 1412 | static uint16_t dstin_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1413 | SkASSERT(require_255(src)); |
| 1414 | return dst; |
| 1415 | } |
| 1416 | |
| 1417 | static uint16_t dstout_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1418 | SkASSERT(require_0(src)); |
| 1419 | return dst; |
| 1420 | } |
| 1421 | |
| 1422 | static uint16_t srcatop_modeproc16(SkPMColor src, uint16_t dst) { |
| 1423 | unsigned isa = 255 - SkGetPackedA32(src); |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1424 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1425 | return SkPackRGB16( |
| 1426 | SkPacked32ToR16(src) + SkAlphaMulAlpha(SkGetPackedR16(dst), isa), |
| 1427 | SkPacked32ToG16(src) + SkAlphaMulAlpha(SkGetPackedG16(dst), isa), |
| 1428 | SkPacked32ToB16(src) + SkAlphaMulAlpha(SkGetPackedB16(dst), isa)); |
| 1429 | } |
| 1430 | |
| 1431 | static uint16_t srcatop_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1432 | SkASSERT(require_0(src)); |
| 1433 | return dst; |
| 1434 | } |
| 1435 | |
| 1436 | static uint16_t srcatop_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1437 | SkASSERT(require_255(src)); |
| 1438 | return SkPixel32ToPixel16(src); |
| 1439 | } |
| 1440 | |
| 1441 | static uint16_t dstatop_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1442 | SkASSERT(require_255(src)); |
| 1443 | return dst; |
| 1444 | } |
| 1445 | |
| 1446 | /********* |
| 1447 | darken and lighten boil down to this. |
| 1448 | |
| 1449 | darken = (1 - Sa) * Dc + min(Sc, Dc) |
| 1450 | lighten = (1 - Sa) * Dc + max(Sc, Dc) |
| 1451 | |
| 1452 | if (Sa == 0) these become |
| 1453 | darken = Dc + min(0, Dc) = 0 |
| 1454 | lighten = Dc + max(0, Dc) = Dc |
| 1455 | |
| 1456 | if (Sa == 1) these become |
| 1457 | darken = min(Sc, Dc) |
| 1458 | lighten = max(Sc, Dc) |
| 1459 | */ |
| 1460 | |
| 1461 | static uint16_t darken_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1462 | SkASSERT(require_0(src)); |
| 1463 | return 0; |
| 1464 | } |
| 1465 | |
| 1466 | static uint16_t darken_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1467 | SkASSERT(require_255(src)); |
| 1468 | unsigned r = SkFastMin32(SkPacked32ToR16(src), SkGetPackedR16(dst)); |
| 1469 | unsigned g = SkFastMin32(SkPacked32ToG16(src), SkGetPackedG16(dst)); |
| 1470 | unsigned b = SkFastMin32(SkPacked32ToB16(src), SkGetPackedB16(dst)); |
| 1471 | return SkPackRGB16(r, g, b); |
| 1472 | } |
| 1473 | |
| 1474 | static uint16_t lighten_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1475 | SkASSERT(require_0(src)); |
| 1476 | return dst; |
| 1477 | } |
| 1478 | |
| 1479 | static uint16_t lighten_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1480 | SkASSERT(require_255(src)); |
| 1481 | unsigned r = SkMax32(SkPacked32ToR16(src), SkGetPackedR16(dst)); |
| 1482 | unsigned g = SkMax32(SkPacked32ToG16(src), SkGetPackedG16(dst)); |
| 1483 | unsigned b = SkMax32(SkPacked32ToB16(src), SkGetPackedB16(dst)); |
| 1484 | return SkPackRGB16(r, g, b); |
| 1485 | } |
| 1486 | |
| 1487 | struct Proc16Rec { |
| 1488 | SkXfermodeProc16 fProc16_0; |
| 1489 | SkXfermodeProc16 fProc16_255; |
| 1490 | SkXfermodeProc16 fProc16_General; |
| 1491 | }; |
| 1492 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1493 | static const Proc16Rec gModeProcs16[] = { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1494 | { NULL, NULL, NULL }, // CLEAR |
| 1495 | { NULL, src_modeproc16_255, NULL }, |
| 1496 | { dst_modeproc16, dst_modeproc16, dst_modeproc16 }, |
| 1497 | { srcover_modeproc16_0, srcover_modeproc16_255, NULL }, |
| 1498 | { dstover_modeproc16_0, dstover_modeproc16_255, NULL }, |
| 1499 | { NULL, srcin_modeproc16_255, NULL }, |
| 1500 | { NULL, dstin_modeproc16_255, NULL }, |
| 1501 | { NULL, NULL, NULL },// SRC_OUT |
| 1502 | { dstout_modeproc16_0, NULL, NULL }, |
| 1503 | { srcatop_modeproc16_0, srcatop_modeproc16_255, srcatop_modeproc16 }, |
| 1504 | { NULL, dstatop_modeproc16_255, NULL }, |
| 1505 | { NULL, NULL, NULL }, // XOR |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1506 | |
| 1507 | { NULL, NULL, NULL }, // plus |
reed@google.com | 8d3cd7a | 2013-01-30 21:36:11 +0000 | [diff] [blame] | 1508 | { NULL, NULL, NULL }, // modulate |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1509 | { NULL, NULL, NULL }, // screen |
| 1510 | { NULL, NULL, NULL }, // overlay |
| 1511 | { darken_modeproc16_0, darken_modeproc16_255, NULL }, // darken |
| 1512 | { lighten_modeproc16_0, lighten_modeproc16_255, NULL }, // lighten |
| 1513 | { NULL, NULL, NULL }, // colordodge |
| 1514 | { NULL, NULL, NULL }, // colorburn |
| 1515 | { NULL, NULL, NULL }, // hardlight |
| 1516 | { NULL, NULL, NULL }, // softlight |
| 1517 | { NULL, NULL, NULL }, // difference |
| 1518 | { NULL, NULL, NULL }, // exclusion |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 1519 | { NULL, NULL, NULL }, // multiply |
| 1520 | { NULL, NULL, NULL }, // hue |
| 1521 | { NULL, NULL, NULL }, // saturation |
| 1522 | { NULL, NULL, NULL }, // color |
| 1523 | { NULL, NULL, NULL }, // luminosity |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1524 | }; |
| 1525 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1526 | SkXfermodeProc16 SkXfermode::GetProc16(Mode mode, SkColor srcColor) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1527 | SkXfermodeProc16 proc16 = NULL; |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1528 | if ((unsigned)mode < kModeCount) { |
| 1529 | const Proc16Rec& rec = gModeProcs16[mode]; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1530 | unsigned a = SkColorGetA(srcColor); |
| 1531 | |
| 1532 | if (0 == a) { |
| 1533 | proc16 = rec.fProc16_0; |
| 1534 | } else if (255 == a) { |
| 1535 | proc16 = rec.fProc16_255; |
| 1536 | } else { |
| 1537 | proc16 = rec.fProc16_General; |
| 1538 | } |
| 1539 | } |
| 1540 | return proc16; |
| 1541 | } |
| 1542 | |
caryclark@google.com | d26147a | 2011-12-15 14:16:43 +0000 | [diff] [blame] | 1543 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkXfermode) |
| 1544 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkProcCoeffXfermode) |
caryclark@google.com | d26147a | 2011-12-15 14:16:43 +0000 | [diff] [blame] | 1545 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |