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 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 10 | #include "SkXfermode.h" |
commit-bot@chromium.org | c524e98 | 2014-04-09 15:43:46 +0000 | [diff] [blame] | 11 | #include "SkXfermode_opts_SSE2.h" |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 12 | #include "SkXfermode_proccoeff.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 13 | #include "SkColorPriv.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 "SkOnce.h" |
| 16 | #include "SkReadBuffer.h" |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 17 | #include "SkString.h" |
commit-bot@chromium.org | cd7992b | 2013-10-17 16:29:34 +0000 | [diff] [blame] | 18 | #include "SkUtilsArm.h" |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 19 | #include "SkWriteBuffer.h" |
commit-bot@chromium.org | cd7992b | 2013-10-17 16:29:34 +0000 | [diff] [blame] | 20 | |
| 21 | #if !SK_ARM_NEON_IS_NONE |
| 22 | #include "SkXfermode_opts_arm_neon.h" |
| 23 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 24 | |
| 25 | #define SkAlphaMulAlpha(a, b) SkMulDiv255Round(a, b) |
| 26 | |
reed@android.com | fc25abd | 2009-01-15 14:38:33 +0000 | [diff] [blame] | 27 | #if 0 |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 28 | // idea for higher precision blends in xfer procs (and slightly faster) |
| 29 | // see DstATop as a probable caller |
| 30 | static U8CPU mulmuldiv255round(U8CPU a, U8CPU b, U8CPU c, U8CPU d) { |
| 31 | SkASSERT(a <= 255); |
| 32 | SkASSERT(b <= 255); |
| 33 | SkASSERT(c <= 255); |
| 34 | SkASSERT(d <= 255); |
| 35 | unsigned prod = SkMulS16(a, b) + SkMulS16(c, d) + 128; |
| 36 | unsigned result = (prod + (prod >> 8)) >> 8; |
| 37 | SkASSERT(result <= 255); |
| 38 | return result; |
| 39 | } |
reed@android.com | fc25abd | 2009-01-15 14:38:33 +0000 | [diff] [blame] | 40 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 41 | |
deanm@chromium.org | da94699 | 2009-07-03 12:54:24 +0000 | [diff] [blame] | 42 | static inline unsigned saturated_add(unsigned a, unsigned b) { |
reed@android.com | 543ed93 | 2009-04-24 12:43:40 +0000 | [diff] [blame] | 43 | SkASSERT(a <= 255); |
| 44 | SkASSERT(b <= 255); |
| 45 | unsigned sum = a + b; |
| 46 | if (sum > 255) { |
| 47 | sum = 255; |
| 48 | } |
| 49 | return sum; |
| 50 | } |
| 51 | |
deanm@chromium.org | da94699 | 2009-07-03 12:54:24 +0000 | [diff] [blame] | 52 | static inline int clamp_signed_byte(int n) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 53 | if (n < 0) { |
| 54 | n = 0; |
| 55 | } else if (n > 255) { |
| 56 | n = 255; |
| 57 | } |
| 58 | return n; |
| 59 | } |
| 60 | |
deanm@chromium.org | da94699 | 2009-07-03 12:54:24 +0000 | [diff] [blame] | 61 | static inline int clamp_div255round(int prod) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 62 | if (prod <= 0) { |
| 63 | return 0; |
| 64 | } else if (prod >= 255*255) { |
| 65 | return 255; |
| 66 | } else { |
| 67 | return SkDiv255Round(prod); |
| 68 | } |
| 69 | } |
| 70 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 71 | /////////////////////////////////////////////////////////////////////////////// |
| 72 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 73 | // kClear_Mode, //!< [0, 0] |
| 74 | static SkPMColor clear_modeproc(SkPMColor src, SkPMColor dst) { |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | // kSrc_Mode, //!< [Sa, Sc] |
| 79 | static SkPMColor src_modeproc(SkPMColor src, SkPMColor dst) { |
| 80 | return src; |
| 81 | } |
| 82 | |
| 83 | // kDst_Mode, //!< [Da, Dc] |
| 84 | static SkPMColor dst_modeproc(SkPMColor src, SkPMColor dst) { |
| 85 | return dst; |
| 86 | } |
| 87 | |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 88 | // kSrcOver_Mode, //!< [Sa + Da - Sa*Da, Sc + (1 - Sa)*Dc] |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 89 | static SkPMColor srcover_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | 1116fb2 | 2009-03-03 20:31:12 +0000 | [diff] [blame] | 90 | #if 0 |
| 91 | // this is the old, more-correct way, but it doesn't guarantee that dst==255 |
| 92 | // will always stay opaque |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 93 | return src + SkAlphaMulQ(dst, SkAlpha255To256(255 - SkGetPackedA32(src))); |
reed@android.com | 1116fb2 | 2009-03-03 20:31:12 +0000 | [diff] [blame] | 94 | #else |
| 95 | // this is slightly faster, but more importantly guarantees that dst==255 |
| 96 | // will always stay opaque |
| 97 | return src + SkAlphaMulQ(dst, 256 - SkGetPackedA32(src)); |
| 98 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 99 | } |
| 100 | |
reed@android.com | 1116fb2 | 2009-03-03 20:31:12 +0000 | [diff] [blame] | 101 | // kDstOver_Mode, //!< [Sa + Da - Sa*Da, Dc + (1 - Da)*Sc] |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 102 | static SkPMColor dstover_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | 1116fb2 | 2009-03-03 20:31:12 +0000 | [diff] [blame] | 103 | // this is the reverse of srcover, just flipping src and dst |
| 104 | // see srcover's comment about the 256 for opaqueness guarantees |
| 105 | return dst + SkAlphaMulQ(src, 256 - SkGetPackedA32(dst)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | // kSrcIn_Mode, //!< [Sa * Da, Sc * Da] |
| 109 | static SkPMColor srcin_modeproc(SkPMColor src, SkPMColor dst) { |
| 110 | return SkAlphaMulQ(src, SkAlpha255To256(SkGetPackedA32(dst))); |
| 111 | } |
| 112 | |
| 113 | // kDstIn_Mode, //!< [Sa * Da, Sa * Dc] |
| 114 | static SkPMColor dstin_modeproc(SkPMColor src, SkPMColor dst) { |
| 115 | return SkAlphaMulQ(dst, SkAlpha255To256(SkGetPackedA32(src))); |
| 116 | } |
| 117 | |
| 118 | // kSrcOut_Mode, //!< [Sa * (1 - Da), Sc * (1 - Da)] |
| 119 | static SkPMColor srcout_modeproc(SkPMColor src, SkPMColor dst) { |
| 120 | return SkAlphaMulQ(src, SkAlpha255To256(255 - SkGetPackedA32(dst))); |
| 121 | } |
| 122 | |
| 123 | // kDstOut_Mode, //!< [Da * (1 - Sa), Dc * (1 - Sa)] |
| 124 | static SkPMColor dstout_modeproc(SkPMColor src, SkPMColor dst) { |
| 125 | return SkAlphaMulQ(dst, SkAlpha255To256(255 - SkGetPackedA32(src))); |
| 126 | } |
| 127 | |
| 128 | // kSrcATop_Mode, //!< [Da, Sc * Da + (1 - Sa) * Dc] |
| 129 | static SkPMColor srcatop_modeproc(SkPMColor src, SkPMColor dst) { |
| 130 | unsigned sa = SkGetPackedA32(src); |
| 131 | unsigned da = SkGetPackedA32(dst); |
| 132 | unsigned isa = 255 - sa; |
| 133 | |
| 134 | return SkPackARGB32(da, |
| 135 | SkAlphaMulAlpha(da, SkGetPackedR32(src)) + |
| 136 | SkAlphaMulAlpha(isa, SkGetPackedR32(dst)), |
| 137 | SkAlphaMulAlpha(da, SkGetPackedG32(src)) + |
| 138 | SkAlphaMulAlpha(isa, SkGetPackedG32(dst)), |
| 139 | SkAlphaMulAlpha(da, SkGetPackedB32(src)) + |
| 140 | SkAlphaMulAlpha(isa, SkGetPackedB32(dst))); |
| 141 | } |
| 142 | |
| 143 | // kDstATop_Mode, //!< [Sa, Sa * Dc + Sc * (1 - Da)] |
| 144 | static SkPMColor dstatop_modeproc(SkPMColor src, SkPMColor dst) { |
| 145 | unsigned sa = SkGetPackedA32(src); |
| 146 | unsigned da = SkGetPackedA32(dst); |
| 147 | unsigned ida = 255 - da; |
| 148 | |
| 149 | return SkPackARGB32(sa, |
| 150 | SkAlphaMulAlpha(ida, SkGetPackedR32(src)) + |
| 151 | SkAlphaMulAlpha(sa, SkGetPackedR32(dst)), |
| 152 | SkAlphaMulAlpha(ida, SkGetPackedG32(src)) + |
| 153 | SkAlphaMulAlpha(sa, SkGetPackedG32(dst)), |
| 154 | SkAlphaMulAlpha(ida, SkGetPackedB32(src)) + |
| 155 | SkAlphaMulAlpha(sa, SkGetPackedB32(dst))); |
| 156 | } |
| 157 | |
| 158 | // kXor_Mode [Sa + Da - 2 * Sa * Da, Sc * (1 - Da) + (1 - Sa) * Dc] |
| 159 | static SkPMColor xor_modeproc(SkPMColor src, SkPMColor dst) { |
| 160 | unsigned sa = SkGetPackedA32(src); |
| 161 | unsigned da = SkGetPackedA32(dst); |
| 162 | unsigned isa = 255 - sa; |
| 163 | unsigned ida = 255 - da; |
| 164 | |
| 165 | return SkPackARGB32(sa + da - (SkAlphaMulAlpha(sa, da) << 1), |
| 166 | SkAlphaMulAlpha(ida, SkGetPackedR32(src)) + |
| 167 | SkAlphaMulAlpha(isa, SkGetPackedR32(dst)), |
| 168 | SkAlphaMulAlpha(ida, SkGetPackedG32(src)) + |
| 169 | SkAlphaMulAlpha(isa, SkGetPackedG32(dst)), |
| 170 | SkAlphaMulAlpha(ida, SkGetPackedB32(src)) + |
| 171 | SkAlphaMulAlpha(isa, SkGetPackedB32(dst))); |
| 172 | } |
| 173 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 174 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 175 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 176 | // kPlus_Mode |
| 177 | static SkPMColor plus_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 178 | unsigned b = saturated_add(SkGetPackedB32(src), SkGetPackedB32(dst)); |
deanm@chromium.org | da94699 | 2009-07-03 12:54:24 +0000 | [diff] [blame] | 179 | unsigned g = saturated_add(SkGetPackedG32(src), SkGetPackedG32(dst)); |
| 180 | unsigned r = saturated_add(SkGetPackedR32(src), SkGetPackedR32(dst)); |
| 181 | unsigned a = saturated_add(SkGetPackedA32(src), SkGetPackedA32(dst)); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 182 | return SkPackARGB32(a, r, g, b); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 183 | } |
| 184 | |
reed@google.com | 8d3cd7a | 2013-01-30 21:36:11 +0000 | [diff] [blame] | 185 | // kModulate_Mode |
| 186 | static SkPMColor modulate_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 187 | int a = SkAlphaMulAlpha(SkGetPackedA32(src), SkGetPackedA32(dst)); |
| 188 | int r = SkAlphaMulAlpha(SkGetPackedR32(src), SkGetPackedR32(dst)); |
| 189 | int g = SkAlphaMulAlpha(SkGetPackedG32(src), SkGetPackedG32(dst)); |
| 190 | int b = SkAlphaMulAlpha(SkGetPackedB32(src), SkGetPackedB32(dst)); |
| 191 | return SkPackARGB32(a, r, g, b); |
| 192 | } |
| 193 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 194 | static inline int srcover_byte(int a, int b) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 195 | return a + b - SkAlphaMulAlpha(a, b); |
| 196 | } |
reed@google.com | 25cfa69 | 2013-02-04 20:06:00 +0000 | [diff] [blame] | 197 | |
| 198 | // kMultiply_Mode |
| 199 | // B(Cb, Cs) = Cb x Cs |
| 200 | // multiply uses its own version of blendfunc_byte because sa and da are not needed |
| 201 | static int blendfunc_multiply_byte(int sc, int dc, int sa, int da) { |
| 202 | return clamp_div255round(sc * (255 - da) + dc * (255 - sa) + sc * dc); |
| 203 | } |
| 204 | |
| 205 | static SkPMColor multiply_modeproc(SkPMColor src, SkPMColor dst) { |
| 206 | int sa = SkGetPackedA32(src); |
| 207 | int da = SkGetPackedA32(dst); |
| 208 | int a = srcover_byte(sa, da); |
| 209 | int r = blendfunc_multiply_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 210 | int g = blendfunc_multiply_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 211 | int b = blendfunc_multiply_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 212 | return SkPackARGB32(a, r, g, b); |
| 213 | } |
| 214 | |
| 215 | // kScreen_Mode |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 216 | static SkPMColor screen_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 217 | int a = srcover_byte(SkGetPackedA32(src), SkGetPackedA32(dst)); |
| 218 | int r = srcover_byte(SkGetPackedR32(src), SkGetPackedR32(dst)); |
| 219 | int g = srcover_byte(SkGetPackedG32(src), SkGetPackedG32(dst)); |
| 220 | int b = srcover_byte(SkGetPackedB32(src), SkGetPackedB32(dst)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 221 | return SkPackARGB32(a, r, g, b); |
| 222 | } |
| 223 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 224 | // kOverlay_Mode |
| 225 | static inline int overlay_byte(int sc, int dc, int sa, int da) { |
| 226 | int tmp = sc * (255 - da) + dc * (255 - sa); |
| 227 | int rc; |
| 228 | if (2 * dc <= da) { |
| 229 | rc = 2 * sc * dc; |
| 230 | } else { |
| 231 | rc = sa * da - 2 * (da - dc) * (sa - sc); |
| 232 | } |
| 233 | return clamp_div255round(rc + tmp); |
| 234 | } |
| 235 | static SkPMColor overlay_modeproc(SkPMColor src, SkPMColor dst) { |
| 236 | int sa = SkGetPackedA32(src); |
| 237 | int da = SkGetPackedA32(dst); |
| 238 | int a = srcover_byte(sa, da); |
| 239 | int r = overlay_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 240 | int g = overlay_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 241 | int b = overlay_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 242 | return SkPackARGB32(a, r, g, b); |
| 243 | } |
| 244 | |
| 245 | // kDarken_Mode |
| 246 | static inline int darken_byte(int sc, int dc, int sa, int da) { |
| 247 | int sd = sc * da; |
| 248 | int ds = dc * sa; |
| 249 | if (sd < ds) { |
| 250 | // srcover |
| 251 | return sc + dc - SkDiv255Round(ds); |
| 252 | } else { |
| 253 | // dstover |
| 254 | return dc + sc - SkDiv255Round(sd); |
| 255 | } |
| 256 | } |
| 257 | static SkPMColor darken_modeproc(SkPMColor src, SkPMColor dst) { |
| 258 | int sa = SkGetPackedA32(src); |
| 259 | int da = SkGetPackedA32(dst); |
| 260 | int a = srcover_byte(sa, da); |
| 261 | int r = darken_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 262 | int g = darken_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 263 | int b = darken_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 264 | return SkPackARGB32(a, r, g, b); |
| 265 | } |
| 266 | |
| 267 | // kLighten_Mode |
| 268 | static inline int lighten_byte(int sc, int dc, int sa, int da) { |
| 269 | int sd = sc * da; |
| 270 | int ds = dc * sa; |
| 271 | if (sd > ds) { |
| 272 | // srcover |
| 273 | return sc + dc - SkDiv255Round(ds); |
| 274 | } else { |
| 275 | // dstover |
| 276 | return dc + sc - SkDiv255Round(sd); |
| 277 | } |
| 278 | } |
| 279 | static SkPMColor lighten_modeproc(SkPMColor src, SkPMColor dst) { |
| 280 | int sa = SkGetPackedA32(src); |
| 281 | int da = SkGetPackedA32(dst); |
| 282 | int a = srcover_byte(sa, da); |
| 283 | int r = lighten_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 284 | int g = lighten_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 285 | int b = lighten_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 286 | return SkPackARGB32(a, r, g, b); |
| 287 | } |
| 288 | |
| 289 | // kColorDodge_Mode |
| 290 | static inline int colordodge_byte(int sc, int dc, int sa, int da) { |
| 291 | int diff = sa - sc; |
| 292 | int rc; |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 293 | if (0 == dc) { |
| 294 | return SkAlphaMulAlpha(sc, 255 - da); |
| 295 | } else if (0 == diff) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 296 | rc = sa * da + sc * (255 - da) + dc * (255 - sa); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 297 | } else { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 298 | diff = dc * sa / diff; |
| 299 | 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] | 300 | } |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 301 | return clamp_div255round(rc); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 302 | } |
| 303 | static SkPMColor colordodge_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 304 | int sa = SkGetPackedA32(src); |
| 305 | int da = SkGetPackedA32(dst); |
| 306 | int a = srcover_byte(sa, da); |
| 307 | int r = colordodge_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 308 | int g = colordodge_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 309 | int b = colordodge_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 310 | return SkPackARGB32(a, r, g, b); |
| 311 | } |
| 312 | |
| 313 | // kColorBurn_Mode |
| 314 | static inline int colorburn_byte(int sc, int dc, int sa, int da) { |
| 315 | int rc; |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 316 | if (dc == da) { |
| 317 | rc = sa * da + sc * (255 - da) + dc * (255 - sa); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 318 | } else if (0 == sc) { |
| 319 | return SkAlphaMulAlpha(dc, 255 - sa); |
| 320 | } else { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 321 | int tmp = (da - dc) * sa / sc; |
| 322 | rc = sa * (da - ((da < tmp) ? da : tmp)) |
| 323 | + sc * (255 - da) + dc * (255 - sa); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 324 | } |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 325 | return clamp_div255round(rc); |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 326 | } |
| 327 | static SkPMColor colorburn_modeproc(SkPMColor src, SkPMColor dst) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 328 | int sa = SkGetPackedA32(src); |
| 329 | int da = SkGetPackedA32(dst); |
| 330 | int a = srcover_byte(sa, da); |
| 331 | int r = colorburn_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 332 | int g = colorburn_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 333 | int b = colorburn_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 334 | return SkPackARGB32(a, r, g, b); |
| 335 | } |
| 336 | |
| 337 | // kHardLight_Mode |
| 338 | static inline int hardlight_byte(int sc, int dc, int sa, int da) { |
| 339 | int rc; |
| 340 | if (2 * sc <= sa) { |
| 341 | rc = 2 * sc * dc; |
| 342 | } else { |
| 343 | rc = sa * da - 2 * (da - dc) * (sa - sc); |
| 344 | } |
| 345 | return clamp_div255round(rc + sc * (255 - da) + dc * (255 - sa)); |
| 346 | } |
| 347 | static SkPMColor hardlight_modeproc(SkPMColor src, SkPMColor dst) { |
| 348 | int sa = SkGetPackedA32(src); |
| 349 | int da = SkGetPackedA32(dst); |
| 350 | int a = srcover_byte(sa, da); |
| 351 | int r = hardlight_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 352 | int g = hardlight_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 353 | int b = hardlight_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 354 | return SkPackARGB32(a, r, g, b); |
| 355 | } |
| 356 | |
| 357 | // returns 255 * sqrt(n/255) |
| 358 | static U8CPU sqrt_unit_byte(U8CPU n) { |
| 359 | return SkSqrtBits(n, 15+4); |
| 360 | } |
| 361 | |
| 362 | // kSoftLight_Mode |
| 363 | static inline int softlight_byte(int sc, int dc, int sa, int da) { |
| 364 | int m = da ? dc * 256 / da : 0; |
| 365 | int rc; |
| 366 | if (2 * sc <= sa) { |
| 367 | rc = dc * (sa + ((2 * sc - sa) * (256 - m) >> 8)); |
| 368 | } else if (4 * dc <= da) { |
| 369 | int tmp = (4 * m * (4 * m + 256) * (m - 256) >> 16) + 7 * m; |
| 370 | rc = dc * sa + (da * (2 * sc - sa) * tmp >> 8); |
| 371 | } else { |
| 372 | int tmp = sqrt_unit_byte(m) - m; |
| 373 | rc = dc * sa + (da * (2 * sc - sa) * tmp >> 8); |
| 374 | } |
| 375 | return clamp_div255round(rc + sc * (255 - da) + dc * (255 - sa)); |
| 376 | } |
| 377 | static SkPMColor softlight_modeproc(SkPMColor src, SkPMColor dst) { |
| 378 | int sa = SkGetPackedA32(src); |
| 379 | int da = SkGetPackedA32(dst); |
| 380 | int a = srcover_byte(sa, da); |
| 381 | int r = softlight_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 382 | int g = softlight_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 383 | int b = softlight_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 384 | return SkPackARGB32(a, r, g, b); |
| 385 | } |
| 386 | |
| 387 | // kDifference_Mode |
| 388 | static inline int difference_byte(int sc, int dc, int sa, int da) { |
| 389 | int tmp = SkMin32(sc * da, dc * sa); |
| 390 | return clamp_signed_byte(sc + dc - 2 * SkDiv255Round(tmp)); |
| 391 | } |
| 392 | static SkPMColor difference_modeproc(SkPMColor src, SkPMColor dst) { |
| 393 | int sa = SkGetPackedA32(src); |
| 394 | int da = SkGetPackedA32(dst); |
| 395 | int a = srcover_byte(sa, da); |
| 396 | int r = difference_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 397 | int g = difference_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 398 | int b = difference_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
| 399 | return SkPackARGB32(a, r, g, b); |
| 400 | } |
| 401 | |
| 402 | // kExclusion_Mode |
commit-bot@chromium.org | e38e53b | 2013-07-15 12:20:36 +0000 | [diff] [blame] | 403 | static inline int exclusion_byte(int sc, int dc, int, int) { |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 404 | // this equations is wacky, wait for SVG to confirm it |
commit-bot@chromium.org | e38e53b | 2013-07-15 12:20:36 +0000 | [diff] [blame] | 405 | //int r = sc * da + dc * sa - 2 * sc * dc + sc * (255 - da) + dc * (255 - sa); |
| 406 | |
| 407 | // The above equation can be simplified as follows |
| 408 | int r = 255*(sc + dc) - 2 * sc * dc; |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 409 | return clamp_div255round(r); |
| 410 | } |
| 411 | static SkPMColor exclusion_modeproc(SkPMColor src, SkPMColor dst) { |
| 412 | int sa = SkGetPackedA32(src); |
| 413 | int da = SkGetPackedA32(dst); |
| 414 | int a = srcover_byte(sa, da); |
| 415 | int r = exclusion_byte(SkGetPackedR32(src), SkGetPackedR32(dst), sa, da); |
| 416 | int g = exclusion_byte(SkGetPackedG32(src), SkGetPackedG32(dst), sa, da); |
| 417 | int b = exclusion_byte(SkGetPackedB32(src), SkGetPackedB32(dst), sa, da); |
reed@android.com | 543ed93 | 2009-04-24 12:43:40 +0000 | [diff] [blame] | 418 | return SkPackARGB32(a, r, g, b); |
| 419 | } |
| 420 | |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 421 | // The CSS compositing spec introduces the following formulas: |
| 422 | // (See https://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html#blendingnonseparable) |
| 423 | // SkComputeLuminance is similar to this formula but it uses the new definition from Rec. 709 |
| 424 | // while PDF and CG uses the one from Rec. Rec. 601 |
| 425 | // See http://www.glennchan.info/articles/technical/hd-versus-sd-color-space/hd-versus-sd-color-space.htm |
| 426 | static inline int Lum(int r, int g, int b) |
| 427 | { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 428 | return SkDiv255Round(r * 77 + g * 150 + b * 28); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 429 | } |
| 430 | |
| 431 | static inline int min2(int a, int b) { return a < b ? a : b; } |
| 432 | 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] | 433 | #define minimum(a, b, c) min2(min2(a, b), c) |
| 434 | #define maximum(a, b, c) max2(max2(a, b), c) |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 435 | |
| 436 | static inline int Sat(int r, int g, int b) { |
| 437 | return maximum(r, g, b) - minimum(r, g, b); |
| 438 | } |
| 439 | |
| 440 | 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] | 441 | if(*Cmax > *Cmin) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 442 | *Cmid = SkMulDiv(*Cmid - *Cmin, s, *Cmax - *Cmin); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 443 | *Cmax = s; |
| 444 | } else { |
| 445 | *Cmax = 0; |
| 446 | *Cmid = 0; |
| 447 | } |
| 448 | |
| 449 | *Cmin = 0; |
| 450 | } |
| 451 | |
| 452 | static inline void SetSat(int* r, int* g, int* b, int s) { |
| 453 | if(*r <= *g) { |
| 454 | if(*g <= *b) { |
| 455 | setSaturationComponents(r, g, b, s); |
| 456 | } else if(*r <= *b) { |
| 457 | setSaturationComponents(r, b, g, s); |
| 458 | } else { |
| 459 | setSaturationComponents(b, r, g, s); |
| 460 | } |
| 461 | } else if(*r <= *b) { |
| 462 | setSaturationComponents(g, r, b, s); |
| 463 | } else if(*g <= *b) { |
| 464 | setSaturationComponents(g, b, r, s); |
| 465 | } else { |
| 466 | setSaturationComponents(b, g, r, s); |
| 467 | } |
| 468 | } |
| 469 | |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 470 | 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] | 471 | int L = Lum(*r, *g, *b); |
| 472 | int n = minimum(*r, *g, *b); |
| 473 | int x = maximum(*r, *g, *b); |
commit-bot@chromium.org | b85ebea | 2013-12-12 19:47:09 +0000 | [diff] [blame] | 474 | int denom; |
| 475 | if ((n < 0) && (denom = L - n)) { // Compute denom and make sure it's non zero |
| 476 | *r = L + SkMulDiv(*r - L, L, denom); |
| 477 | *g = L + SkMulDiv(*g - L, L, denom); |
| 478 | *b = L + SkMulDiv(*b - L, L, denom); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 479 | } |
| 480 | |
commit-bot@chromium.org | b85ebea | 2013-12-12 19:47:09 +0000 | [diff] [blame] | 481 | if ((x > a) && (denom = x - L)) { // Compute denom and make sure it's non zero |
| 482 | int numer = a - L; |
| 483 | *r = L + SkMulDiv(*r - L, numer, denom); |
| 484 | *g = L + SkMulDiv(*g - L, numer, denom); |
| 485 | *b = L + SkMulDiv(*b - L, numer, denom); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 486 | } |
| 487 | } |
| 488 | |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 489 | 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] | 490 | int d = l - Lum(*r, *g, *b); |
| 491 | *r += d; |
| 492 | *g += d; |
| 493 | *b += d; |
| 494 | |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 495 | clipColor(r, g, b, a); |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | // non-separable blend modes are done in non-premultiplied alpha |
| 499 | #define blendfunc_nonsep_byte(sc, dc, sa, da, blendval) \ |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 500 | clamp_div255round(sc * (255 - da) + dc * (255 - sa) + blendval) |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 501 | |
| 502 | // kHue_Mode |
| 503 | // B(Cb, Cs) = SetLum(SetSat(Cs, Sat(Cb)), Lum(Cb)) |
| 504 | // Create a color with the hue of the source color and the saturation and luminosity of the backdrop color. |
| 505 | static SkPMColor hue_modeproc(SkPMColor src, SkPMColor dst) { |
| 506 | int sr = SkGetPackedR32(src); |
| 507 | int sg = SkGetPackedG32(src); |
| 508 | int sb = SkGetPackedB32(src); |
| 509 | int sa = SkGetPackedA32(src); |
| 510 | |
| 511 | int dr = SkGetPackedR32(dst); |
| 512 | int dg = SkGetPackedG32(dst); |
| 513 | int db = SkGetPackedB32(dst); |
| 514 | int da = SkGetPackedA32(dst); |
| 515 | int Sr, Sg, Sb; |
| 516 | |
| 517 | if(sa && da) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 518 | Sr = sr * sa; |
| 519 | Sg = sg * sa; |
| 520 | Sb = sb * sa; |
| 521 | SetSat(&Sr, &Sg, &Sb, Sat(dr, dg, db) * sa); |
| 522 | 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] | 523 | } else { |
| 524 | Sr = 0; |
| 525 | Sg = 0; |
| 526 | Sb = 0; |
| 527 | } |
| 528 | |
| 529 | int a = srcover_byte(sa, da); |
| 530 | int r = blendfunc_nonsep_byte(sr, dr, sa, da, Sr); |
| 531 | int g = blendfunc_nonsep_byte(sg, dg, sa, da, Sg); |
| 532 | int b = blendfunc_nonsep_byte(sb, db, sa, da, Sb); |
| 533 | return SkPackARGB32(a, r, g, b); |
| 534 | } |
| 535 | |
| 536 | // kSaturation_Mode |
| 537 | // B(Cb, Cs) = SetLum(SetSat(Cb, Sat(Cs)), Lum(Cb)) |
skia.committer@gmail.com | 6433435 | 2013-03-06 07:01:46 +0000 | [diff] [blame] | 538 | // 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] | 539 | static SkPMColor saturation_modeproc(SkPMColor src, SkPMColor dst) { |
| 540 | int sr = SkGetPackedR32(src); |
| 541 | int sg = SkGetPackedG32(src); |
| 542 | int sb = SkGetPackedB32(src); |
| 543 | int sa = SkGetPackedA32(src); |
| 544 | |
| 545 | int dr = SkGetPackedR32(dst); |
| 546 | int dg = SkGetPackedG32(dst); |
| 547 | int db = SkGetPackedB32(dst); |
| 548 | int da = SkGetPackedA32(dst); |
| 549 | int Dr, Dg, Db; |
| 550 | |
| 551 | if(sa && da) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 552 | Dr = dr * sa; |
| 553 | Dg = dg * sa; |
| 554 | Db = db * sa; |
| 555 | SetSat(&Dr, &Dg, &Db, Sat(sr, sg, sb) * da); |
| 556 | 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] | 557 | } else { |
| 558 | Dr = 0; |
| 559 | Dg = 0; |
| 560 | Db = 0; |
| 561 | } |
| 562 | |
| 563 | int a = srcover_byte(sa, da); |
| 564 | int r = blendfunc_nonsep_byte(sr, dr, sa, da, Dr); |
| 565 | int g = blendfunc_nonsep_byte(sg, dg, sa, da, Dg); |
| 566 | int b = blendfunc_nonsep_byte(sb, db, sa, da, Db); |
| 567 | return SkPackARGB32(a, r, g, b); |
| 568 | } |
| 569 | |
| 570 | // kColor_Mode |
| 571 | // B(Cb, Cs) = SetLum(Cs, Lum(Cb)) |
skia.committer@gmail.com | 6433435 | 2013-03-06 07:01:46 +0000 | [diff] [blame] | 572 | // 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] | 573 | static SkPMColor color_modeproc(SkPMColor src, SkPMColor dst) { |
| 574 | int sr = SkGetPackedR32(src); |
| 575 | int sg = SkGetPackedG32(src); |
| 576 | int sb = SkGetPackedB32(src); |
| 577 | int sa = SkGetPackedA32(src); |
| 578 | |
| 579 | int dr = SkGetPackedR32(dst); |
| 580 | int dg = SkGetPackedG32(dst); |
| 581 | int db = SkGetPackedB32(dst); |
| 582 | int da = SkGetPackedA32(dst); |
| 583 | int Sr, Sg, Sb; |
| 584 | |
| 585 | if(sa && da) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 586 | Sr = sr * da; |
| 587 | Sg = sg * da; |
| 588 | Sb = sb * da; |
| 589 | 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] | 590 | } else { |
| 591 | Sr = 0; |
| 592 | Sg = 0; |
| 593 | Sb = 0; |
| 594 | } |
| 595 | |
| 596 | int a = srcover_byte(sa, da); |
| 597 | int r = blendfunc_nonsep_byte(sr, dr, sa, da, Sr); |
| 598 | int g = blendfunc_nonsep_byte(sg, dg, sa, da, Sg); |
| 599 | int b = blendfunc_nonsep_byte(sb, db, sa, da, Sb); |
| 600 | return SkPackARGB32(a, r, g, b); |
| 601 | } |
| 602 | |
| 603 | // kLuminosity_Mode |
| 604 | // B(Cb, Cs) = SetLum(Cb, Lum(Cs)) |
skia.committer@gmail.com | 6433435 | 2013-03-06 07:01:46 +0000 | [diff] [blame] | 605 | // 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] | 606 | static SkPMColor luminosity_modeproc(SkPMColor src, SkPMColor dst) { |
| 607 | int sr = SkGetPackedR32(src); |
| 608 | int sg = SkGetPackedG32(src); |
| 609 | int sb = SkGetPackedB32(src); |
| 610 | int sa = SkGetPackedA32(src); |
| 611 | |
| 612 | int dr = SkGetPackedR32(dst); |
| 613 | int dg = SkGetPackedG32(dst); |
| 614 | int db = SkGetPackedB32(dst); |
| 615 | int da = SkGetPackedA32(dst); |
| 616 | int Dr, Dg, Db; |
| 617 | |
| 618 | if(sa && da) { |
commit-bot@chromium.org | 311d4ea | 2013-03-21 12:40:08 +0000 | [diff] [blame] | 619 | Dr = dr * sa; |
| 620 | Dg = dg * sa; |
| 621 | Db = db * sa; |
| 622 | 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] | 623 | } else { |
| 624 | Dr = 0; |
| 625 | Dg = 0; |
| 626 | Db = 0; |
| 627 | } |
| 628 | |
| 629 | int a = srcover_byte(sa, da); |
| 630 | int r = blendfunc_nonsep_byte(sr, dr, sa, da, Dr); |
| 631 | int g = blendfunc_nonsep_byte(sg, dg, sa, da, Dg); |
| 632 | int b = blendfunc_nonsep_byte(sb, db, sa, da, Db); |
| 633 | return SkPackARGB32(a, r, g, b); |
| 634 | } |
| 635 | |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 636 | const ProcCoeff gProcCoeffs[] = { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 637 | { clear_modeproc, SkXfermode::kZero_Coeff, SkXfermode::kZero_Coeff }, |
| 638 | { src_modeproc, SkXfermode::kOne_Coeff, SkXfermode::kZero_Coeff }, |
| 639 | { dst_modeproc, SkXfermode::kZero_Coeff, SkXfermode::kOne_Coeff }, |
| 640 | { srcover_modeproc, SkXfermode::kOne_Coeff, SkXfermode::kISA_Coeff }, |
| 641 | { dstover_modeproc, SkXfermode::kIDA_Coeff, SkXfermode::kOne_Coeff }, |
| 642 | { srcin_modeproc, SkXfermode::kDA_Coeff, SkXfermode::kZero_Coeff }, |
| 643 | { dstin_modeproc, SkXfermode::kZero_Coeff, SkXfermode::kSA_Coeff }, |
| 644 | { srcout_modeproc, SkXfermode::kIDA_Coeff, SkXfermode::kZero_Coeff }, |
| 645 | { dstout_modeproc, SkXfermode::kZero_Coeff, SkXfermode::kISA_Coeff }, |
| 646 | { srcatop_modeproc, SkXfermode::kDA_Coeff, SkXfermode::kISA_Coeff }, |
| 647 | { dstatop_modeproc, SkXfermode::kIDA_Coeff, SkXfermode::kSA_Coeff }, |
| 648 | { xor_modeproc, SkXfermode::kIDA_Coeff, SkXfermode::kISA_Coeff }, |
| 649 | |
reed@google.com | 521e34e | 2011-04-12 18:55:21 +0000 | [diff] [blame] | 650 | { plus_modeproc, SkXfermode::kOne_Coeff, SkXfermode::kOne_Coeff }, |
reed@google.com | 8d3cd7a | 2013-01-30 21:36:11 +0000 | [diff] [blame] | 651 | { modulate_modeproc,SkXfermode::kZero_Coeff, SkXfermode::kSC_Coeff }, |
bsalomon@google.com | b0091b8 | 2013-04-15 15:16:47 +0000 | [diff] [blame] | 652 | { screen_modeproc, SkXfermode::kOne_Coeff, SkXfermode::kISC_Coeff }, |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 653 | { overlay_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 654 | { darken_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 655 | { lighten_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 656 | { colordodge_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 657 | { colorburn_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 658 | { hardlight_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 659 | { softlight_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 660 | { difference_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 661 | { exclusion_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
reed@google.com | 25cfa69 | 2013-02-04 20:06:00 +0000 | [diff] [blame] | 662 | { multiply_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 663 | { hue_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 664 | { saturation_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 665 | { color_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
| 666 | { luminosity_modeproc, CANNOT_USE_COEFF, CANNOT_USE_COEFF }, |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 667 | }; |
| 668 | |
| 669 | /////////////////////////////////////////////////////////////////////////////// |
| 670 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 671 | bool SkXfermode::asCoeff(Coeff* src, Coeff* dst) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 672 | return false; |
| 673 | } |
| 674 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 675 | bool SkXfermode::asMode(Mode* mode) const { |
reed@google.com | c0d4aa2 | 2011-04-13 21:12:04 +0000 | [diff] [blame] | 676 | return false; |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 677 | } |
| 678 | |
senorblanco@chromium.org | 1a6382f | 2013-10-23 18:41:36 +0000 | [diff] [blame] | 679 | bool SkXfermode::asNewEffect(GrEffectRef** effect, GrTexture* background) const { |
| 680 | return false; |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 681 | } |
| 682 | |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 683 | bool SkXfermode::AsNewEffectOrCoeff(SkXfermode* xfermode, |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 684 | GrEffectRef** effect, |
| 685 | Coeff* src, |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 686 | Coeff* dst, |
| 687 | GrTexture* background) { |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 688 | if (NULL == xfermode) { |
| 689 | return ModeAsCoeff(kSrcOver_Mode, src, dst); |
senorblanco@chromium.org | 1a6382f | 2013-10-23 18:41:36 +0000 | [diff] [blame] | 690 | } else if (xfermode->asCoeff(src, dst)) { |
| 691 | return true; |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 692 | } else { |
senorblanco@chromium.org | 1a6382f | 2013-10-23 18:41:36 +0000 | [diff] [blame] | 693 | return xfermode->asNewEffect(effect, background); |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 694 | } |
| 695 | } |
| 696 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 697 | SkPMColor SkXfermode::xferColor(SkPMColor src, SkPMColor dst) const{ |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 698 | // no-op. subclasses should override this |
| 699 | return dst; |
| 700 | } |
| 701 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 702 | void SkXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 703 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 704 | const SkAlpha* SK_RESTRICT aa) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 705 | SkASSERT(dst && src && count >= 0); |
| 706 | |
| 707 | if (NULL == aa) { |
| 708 | for (int i = count - 1; i >= 0; --i) { |
| 709 | dst[i] = this->xferColor(src[i], dst[i]); |
| 710 | } |
| 711 | } else { |
| 712 | for (int i = count - 1; i >= 0; --i) { |
| 713 | unsigned a = aa[i]; |
| 714 | if (0 != a) { |
| 715 | SkPMColor dstC = dst[i]; |
| 716 | SkPMColor C = this->xferColor(src[i], dstC); |
| 717 | if (0xFF != a) { |
| 718 | C = SkFourByteInterp(C, dstC, a); |
| 719 | } |
| 720 | dst[i] = C; |
| 721 | } |
| 722 | } |
| 723 | } |
| 724 | } |
| 725 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 726 | void SkXfermode::xfer16(uint16_t* dst, |
| 727 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 728 | const SkAlpha* SK_RESTRICT aa) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 729 | SkASSERT(dst && src && count >= 0); |
| 730 | |
| 731 | if (NULL == aa) { |
| 732 | for (int i = count - 1; i >= 0; --i) { |
| 733 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| 734 | dst[i] = SkPixel32ToPixel16_ToU16(this->xferColor(src[i], dstC)); |
| 735 | } |
| 736 | } else { |
| 737 | for (int i = count - 1; i >= 0; --i) { |
| 738 | unsigned a = aa[i]; |
| 739 | if (0 != a) { |
| 740 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| 741 | SkPMColor C = this->xferColor(src[i], dstC); |
| 742 | if (0xFF != a) { |
| 743 | C = SkFourByteInterp(C, dstC, a); |
| 744 | } |
| 745 | dst[i] = SkPixel32ToPixel16_ToU16(C); |
| 746 | } |
| 747 | } |
| 748 | } |
| 749 | } |
| 750 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 751 | void SkXfermode::xferA8(SkAlpha* SK_RESTRICT dst, |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 752 | const SkPMColor src[], int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 753 | const SkAlpha* SK_RESTRICT aa) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 754 | SkASSERT(dst && src && count >= 0); |
| 755 | |
| 756 | if (NULL == aa) { |
| 757 | for (int i = count - 1; i >= 0; --i) { |
| 758 | SkPMColor res = this->xferColor(src[i], (dst[i] << SK_A32_SHIFT)); |
| 759 | dst[i] = SkToU8(SkGetPackedA32(res)); |
| 760 | } |
| 761 | } else { |
| 762 | for (int i = count - 1; i >= 0; --i) { |
| 763 | unsigned a = aa[i]; |
| 764 | if (0 != a) { |
| 765 | SkAlpha dstA = dst[i]; |
| 766 | unsigned A = SkGetPackedA32(this->xferColor(src[i], |
| 767 | (SkPMColor)(dstA << SK_A32_SHIFT))); |
| 768 | if (0xFF != a) { |
| 769 | A = SkAlphaBlend(A, dstA, SkAlpha255To256(a)); |
| 770 | } |
| 771 | dst[i] = SkToU8(A); |
| 772 | } |
| 773 | } |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | /////////////////////////////////////////////////////////////////////////////// |
| 778 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 779 | void SkProcXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 780 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 781 | const SkAlpha* SK_RESTRICT aa) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 782 | SkASSERT(dst && src && count >= 0); |
| 783 | |
| 784 | SkXfermodeProc proc = fProc; |
| 785 | |
| 786 | if (NULL != proc) { |
| 787 | if (NULL == aa) { |
| 788 | for (int i = count - 1; i >= 0; --i) { |
| 789 | dst[i] = proc(src[i], dst[i]); |
| 790 | } |
| 791 | } else { |
| 792 | for (int i = count - 1; i >= 0; --i) { |
| 793 | unsigned a = aa[i]; |
| 794 | if (0 != a) { |
| 795 | SkPMColor dstC = dst[i]; |
| 796 | SkPMColor C = proc(src[i], dstC); |
| 797 | if (a != 0xFF) { |
| 798 | C = SkFourByteInterp(C, dstC, a); |
| 799 | } |
| 800 | dst[i] = C; |
| 801 | } |
| 802 | } |
| 803 | } |
| 804 | } |
| 805 | } |
| 806 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 807 | void SkProcXfermode::xfer16(uint16_t* SK_RESTRICT dst, |
| 808 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 809 | const SkAlpha* SK_RESTRICT aa) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 810 | SkASSERT(dst && src && count >= 0); |
| 811 | |
| 812 | SkXfermodeProc proc = fProc; |
| 813 | |
| 814 | if (NULL != proc) { |
| 815 | if (NULL == aa) { |
| 816 | for (int i = count - 1; i >= 0; --i) { |
| 817 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| 818 | dst[i] = SkPixel32ToPixel16_ToU16(proc(src[i], dstC)); |
| 819 | } |
| 820 | } else { |
| 821 | for (int i = count - 1; i >= 0; --i) { |
| 822 | unsigned a = aa[i]; |
| 823 | if (0 != a) { |
| 824 | SkPMColor dstC = SkPixel16ToPixel32(dst[i]); |
| 825 | SkPMColor C = proc(src[i], dstC); |
| 826 | if (0xFF != a) { |
| 827 | C = SkFourByteInterp(C, dstC, a); |
| 828 | } |
| 829 | dst[i] = SkPixel32ToPixel16_ToU16(C); |
| 830 | } |
| 831 | } |
| 832 | } |
| 833 | } |
| 834 | } |
| 835 | |
tomhudson@google.com | a87cd2a | 2011-06-15 16:50:27 +0000 | [diff] [blame] | 836 | void SkProcXfermode::xferA8(SkAlpha* SK_RESTRICT dst, |
| 837 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 838 | const SkAlpha* SK_RESTRICT aa) const { |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 839 | SkASSERT(dst && src && count >= 0); |
| 840 | |
| 841 | SkXfermodeProc proc = fProc; |
| 842 | |
| 843 | if (NULL != proc) { |
| 844 | if (NULL == aa) { |
| 845 | for (int i = count - 1; i >= 0; --i) { |
| 846 | SkPMColor res = proc(src[i], dst[i] << SK_A32_SHIFT); |
| 847 | dst[i] = SkToU8(SkGetPackedA32(res)); |
| 848 | } |
| 849 | } else { |
| 850 | for (int i = count - 1; i >= 0; --i) { |
| 851 | unsigned a = aa[i]; |
| 852 | if (0 != a) { |
| 853 | SkAlpha dstA = dst[i]; |
| 854 | SkPMColor res = proc(src[i], dstA << SK_A32_SHIFT); |
| 855 | unsigned A = SkGetPackedA32(res); |
| 856 | if (0xFF != a) { |
| 857 | A = SkAlphaBlend(A, dstA, SkAlpha255To256(a)); |
| 858 | } |
| 859 | dst[i] = SkToU8(A); |
| 860 | } |
| 861 | } |
| 862 | } |
| 863 | } |
| 864 | } |
| 865 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 866 | SkProcXfermode::SkProcXfermode(SkReadBuffer& buffer) |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 867 | : SkXfermode(buffer) { |
reed@google.com | 34342f6 | 2012-06-25 14:36:28 +0000 | [diff] [blame] | 868 | fProc = NULL; |
| 869 | if (!buffer.isCrossProcess()) { |
| 870 | fProc = (SkXfermodeProc)buffer.readFunctionPtr(); |
| 871 | } |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 872 | } |
| 873 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 874 | void SkProcXfermode::flatten(SkWriteBuffer& buffer) const { |
djsollen@google.com | 5492424 | 2012-03-29 15:18:04 +0000 | [diff] [blame] | 875 | this->INHERITED::flatten(buffer); |
reed@google.com | 34342f6 | 2012-06-25 14:36:28 +0000 | [diff] [blame] | 876 | if (!buffer.isCrossProcess()) { |
yangsu@google.com | f468e47 | 2011-08-10 18:34:50 +0000 | [diff] [blame] | 877 | buffer.writeFunctionPtr((void*)fProc); |
| 878 | } |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 879 | } |
| 880 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 881 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 882 | void SkProcXfermode::toString(SkString* str) const { |
| 883 | str->appendf("SkProcXfermode: %p", fProc); |
| 884 | } |
| 885 | #endif |
| 886 | |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 887 | ////////////////////////////////////////////////////////////////////////////// |
| 888 | |
| 889 | #if SK_SUPPORT_GPU |
| 890 | |
| 891 | #include "GrEffect.h" |
bsalomon@google.com | 77af680 | 2013-10-02 13:04:56 +0000 | [diff] [blame] | 892 | #include "GrCoordTransform.h" |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 893 | #include "GrEffectUnitTest.h" |
| 894 | #include "GrTBackendEffectFactory.h" |
| 895 | #include "gl/GrGLEffect.h" |
| 896 | |
| 897 | /** |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 898 | * GrEffect that implements the all the separable xfer modes that cannot be expressed as Coeffs. |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 899 | */ |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 900 | class XferEffect : public GrEffect { |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 901 | public: |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 902 | static bool IsSupportedMode(SkXfermode::Mode mode) { |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 903 | return mode > SkXfermode::kLastCoeffMode && mode <= SkXfermode::kLastMode; |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 904 | } |
| 905 | |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 906 | static GrEffectRef* Create(SkXfermode::Mode mode, GrTexture* background) { |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 907 | if (!IsSupportedMode(mode)) { |
| 908 | return NULL; |
| 909 | } else { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 910 | AutoEffectUnref effect(SkNEW_ARGS(XferEffect, (mode, background))); |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 911 | return CreateEffectRef(effect); |
| 912 | } |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 913 | } |
| 914 | |
| 915 | virtual void getConstantColorComponents(GrColor* color, |
| 916 | uint32_t* validFlags) const SK_OVERRIDE { |
| 917 | *validFlags = 0; |
| 918 | } |
| 919 | |
| 920 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE { |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 921 | return GrTBackendEffectFactory<XferEffect>::getInstance(); |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 922 | } |
| 923 | |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 924 | static const char* Name() { return "XferEffect"; } |
| 925 | |
| 926 | SkXfermode::Mode mode() const { return fMode; } |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 927 | const GrTextureAccess& backgroundAccess() const { return fBackgroundAccess; } |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 928 | |
| 929 | class GLEffect : public GrGLEffect { |
| 930 | public: |
| 931 | GLEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&) |
bsalomon@google.com | 77af680 | 2013-10-02 13:04:56 +0000 | [diff] [blame] | 932 | : GrGLEffect(factory) { |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 933 | } |
| 934 | virtual void emitCode(GrGLShaderBuilder* builder, |
| 935 | const GrDrawEffect& drawEffect, |
| 936 | EffectKey key, |
| 937 | const char* outputColor, |
| 938 | const char* inputColor, |
bsalomon@google.com | 77af680 | 2013-10-02 13:04:56 +0000 | [diff] [blame] | 939 | const TransformedCoordsArray& coords, |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 940 | const TextureSamplerArray& samplers) SK_OVERRIDE { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 941 | SkXfermode::Mode mode = drawEffect.castEffect<XferEffect>().mode(); |
| 942 | const GrTexture* backgroundTex = drawEffect.castEffect<XferEffect>().backgroundAccess().getTexture(); |
| 943 | const char* dstColor; |
| 944 | if (backgroundTex) { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 945 | dstColor = "bgColor"; |
| 946 | builder->fsCodeAppendf("\t\tvec4 %s = ", dstColor); |
bsalomon@google.com | 77af680 | 2013-10-02 13:04:56 +0000 | [diff] [blame] | 947 | builder->fsAppendTextureLookup(samplers[0], coords[0].c_str(), coords[0].type()); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 948 | builder->fsCodeAppendf(";\n"); |
| 949 | } else { |
| 950 | dstColor = builder->dstColor(); |
| 951 | } |
tfarina@chromium.org | f6de475 | 2013-08-17 00:02:59 +0000 | [diff] [blame] | 952 | SkASSERT(NULL != dstColor); |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 953 | |
| 954 | // We don't try to optimize for this case at all |
bsalomon@google.com | b79d865 | 2013-03-29 20:30:50 +0000 | [diff] [blame] | 955 | if (NULL == inputColor) { |
commit-bot@chromium.org | 824c346 | 2013-10-10 06:30:18 +0000 | [diff] [blame] | 956 | builder->fsCodeAppendf("\t\tconst vec4 ones = vec4(1);\n"); |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 957 | inputColor = "ones"; |
| 958 | } |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 959 | builder->fsCodeAppendf("\t\t// SkXfermode::Mode: %s\n", SkXfermode::ModeName(mode)); |
| 960 | |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 961 | // These all perform src-over on the alpha channel. |
| 962 | builder->fsCodeAppendf("\t\t%s.a = %s.a + (1.0 - %s.a) * %s.a;\n", |
| 963 | outputColor, inputColor, inputColor, dstColor); |
| 964 | |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 965 | switch (mode) { |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 966 | case SkXfermode::kOverlay_Mode: |
| 967 | // Overlay is Hard-Light with the src and dst reversed |
| 968 | HardLight(builder, outputColor, dstColor, inputColor); |
| 969 | break; |
| 970 | case SkXfermode::kDarken_Mode: |
| 971 | builder->fsCodeAppendf("\t\t%s.rgb = min((1.0 - %s.a) * %s.rgb + %s.rgb, " |
| 972 | "(1.0 - %s.a) * %s.rgb + %s.rgb);\n", |
| 973 | outputColor, |
| 974 | inputColor, dstColor, inputColor, |
| 975 | dstColor, inputColor, dstColor); |
| 976 | break; |
| 977 | case SkXfermode::kLighten_Mode: |
| 978 | builder->fsCodeAppendf("\t\t%s.rgb = max((1.0 - %s.a) * %s.rgb + %s.rgb, " |
| 979 | "(1.0 - %s.a) * %s.rgb + %s.rgb);\n", |
| 980 | outputColor, |
| 981 | inputColor, dstColor, inputColor, |
| 982 | dstColor, inputColor, dstColor); |
| 983 | break; |
| 984 | case SkXfermode::kColorDodge_Mode: |
| 985 | ColorDodgeComponent(builder, outputColor, inputColor, dstColor, 'r'); |
| 986 | ColorDodgeComponent(builder, outputColor, inputColor, dstColor, 'g'); |
| 987 | ColorDodgeComponent(builder, outputColor, inputColor, dstColor, 'b'); |
| 988 | break; |
| 989 | case SkXfermode::kColorBurn_Mode: |
| 990 | ColorBurnComponent(builder, outputColor, inputColor, dstColor, 'r'); |
| 991 | ColorBurnComponent(builder, outputColor, inputColor, dstColor, 'g'); |
| 992 | ColorBurnComponent(builder, outputColor, inputColor, dstColor, 'b'); |
| 993 | break; |
| 994 | case SkXfermode::kHardLight_Mode: |
| 995 | HardLight(builder, outputColor, inputColor, dstColor); |
| 996 | break; |
| 997 | case SkXfermode::kSoftLight_Mode: |
| 998 | builder->fsCodeAppendf("\t\tif (0.0 == %s.a) {\n", dstColor); |
| 999 | builder->fsCodeAppendf("\t\t\t%s.rgba = %s;\n", outputColor, inputColor); |
| 1000 | builder->fsCodeAppendf("\t\t} else {\n"); |
| 1001 | SoftLightComponentPosDstAlpha(builder, outputColor, inputColor, dstColor, 'r'); |
| 1002 | SoftLightComponentPosDstAlpha(builder, outputColor, inputColor, dstColor, 'g'); |
| 1003 | SoftLightComponentPosDstAlpha(builder, outputColor, inputColor, dstColor, 'b'); |
| 1004 | builder->fsCodeAppendf("\t\t}\n"); |
| 1005 | break; |
| 1006 | case SkXfermode::kDifference_Mode: |
| 1007 | builder->fsCodeAppendf("\t\t%s.rgb = %s.rgb + %s.rgb -" |
skia.committer@gmail.com | 64b682c | 2013-04-20 07:01:07 +0000 | [diff] [blame] | 1008 | "2.0 * min(%s.rgb * %s.a, %s.rgb * %s.a);\n", |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1009 | outputColor, inputColor, dstColor, inputColor, dstColor, |
| 1010 | dstColor, inputColor); |
| 1011 | break; |
| 1012 | case SkXfermode::kExclusion_Mode: |
| 1013 | builder->fsCodeAppendf("\t\t%s.rgb = %s.rgb + %s.rgb - " |
| 1014 | "2.0 * %s.rgb * %s.rgb;\n", |
| 1015 | outputColor, dstColor, inputColor, dstColor, inputColor); |
| 1016 | break; |
| 1017 | case SkXfermode::kMultiply_Mode: |
| 1018 | builder->fsCodeAppendf("\t\t%s.rgb = (1.0 - %s.a) * %s.rgb + " |
| 1019 | "(1.0 - %s.a) * %s.rgb + " |
| 1020 | "%s.rgb * %s.rgb;\n", |
| 1021 | outputColor, inputColor, dstColor, dstColor, inputColor, |
| 1022 | inputColor, dstColor); |
| 1023 | break; |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1024 | case SkXfermode::kHue_Mode: { |
| 1025 | // SetLum(SetSat(S * Da, Sat(D * Sa)), Sa*Da, D*Sa) + (1 - Sa) * D + (1 - Da) * S |
| 1026 | SkString setSat, setLum; |
| 1027 | AddSatFunction(builder, &setSat); |
| 1028 | AddLumFunction(builder, &setLum); |
| 1029 | builder->fsCodeAppendf("\t\tvec4 dstSrcAlpha = %s * %s.a;\n", |
| 1030 | dstColor, inputColor); |
| 1031 | builder->fsCodeAppendf("\t\t%s.rgb = %s(%s(%s.rgb * %s.a, dstSrcAlpha.rgb), dstSrcAlpha.a, dstSrcAlpha.rgb);\n", |
| 1032 | outputColor, setLum.c_str(), setSat.c_str(), inputColor, |
| 1033 | dstColor); |
| 1034 | builder->fsCodeAppendf("\t\t%s.rgb += (1.0 - %s.a) * %s.rgb + (1.0 - %s.a) * %s.rgb;\n", |
| 1035 | outputColor, inputColor, dstColor, dstColor, inputColor); |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1036 | break; |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1037 | } |
| 1038 | case SkXfermode::kSaturation_Mode: { |
| 1039 | // SetLum(SetSat(D * Sa, Sat(S * Da)), Sa*Da, D*Sa)) + (1 - Sa) * D + (1 - Da) * S |
| 1040 | SkString setSat, setLum; |
| 1041 | AddSatFunction(builder, &setSat); |
| 1042 | AddLumFunction(builder, &setLum); |
| 1043 | builder->fsCodeAppendf("\t\tvec4 dstSrcAlpha = %s * %s.a;\n", |
| 1044 | dstColor, inputColor); |
| 1045 | builder->fsCodeAppendf("\t\t%s.rgb = %s(%s(dstSrcAlpha.rgb, %s.rgb * %s.a), dstSrcAlpha.a, dstSrcAlpha.rgb);\n", |
| 1046 | outputColor, setLum.c_str(), setSat.c_str(), inputColor, |
| 1047 | dstColor); |
| 1048 | builder->fsCodeAppendf("\t\t%s.rgb += (1.0 - %s.a) * %s.rgb + (1.0 - %s.a) * %s.rgb;\n", |
| 1049 | outputColor, inputColor, dstColor, dstColor, inputColor); |
| 1050 | break; |
| 1051 | } |
| 1052 | case SkXfermode::kColor_Mode: { |
| 1053 | // SetLum(S * Da, Sa* Da, D * Sa) + (1 - Sa) * D + (1 - Da) * S |
| 1054 | SkString setLum; |
| 1055 | AddLumFunction(builder, &setLum); |
| 1056 | builder->fsCodeAppendf("\t\tvec4 srcDstAlpha = %s * %s.a;\n", |
| 1057 | inputColor, dstColor); |
| 1058 | builder->fsCodeAppendf("\t\t%s.rgb = %s(srcDstAlpha.rgb, srcDstAlpha.a, %s.rgb * %s.a);\n", |
| 1059 | outputColor, setLum.c_str(), dstColor, inputColor); |
| 1060 | builder->fsCodeAppendf("\t\t%s.rgb += (1.0 - %s.a) * %s.rgb + (1.0 - %s.a) * %s.rgb;\n", |
| 1061 | outputColor, inputColor, dstColor, dstColor, inputColor); |
| 1062 | break; |
| 1063 | } |
| 1064 | case SkXfermode::kLuminosity_Mode: { |
| 1065 | // SetLum(D * Sa, Sa* Da, S * Da) + (1 - Sa) * D + (1 - Da) * S |
| 1066 | SkString setLum; |
| 1067 | AddLumFunction(builder, &setLum); |
| 1068 | builder->fsCodeAppendf("\t\tvec4 srcDstAlpha = %s * %s.a;\n", |
| 1069 | inputColor, dstColor); |
| 1070 | builder->fsCodeAppendf("\t\t%s.rgb = %s(%s.rgb * %s.a, srcDstAlpha.a, srcDstAlpha.rgb);\n", |
| 1071 | outputColor, setLum.c_str(), dstColor, inputColor); |
| 1072 | builder->fsCodeAppendf("\t\t%s.rgb += (1.0 - %s.a) * %s.rgb + (1.0 - %s.a) * %s.rgb;\n", |
| 1073 | outputColor, inputColor, dstColor, dstColor, inputColor); |
| 1074 | break; |
| 1075 | } |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1076 | default: |
| 1077 | GrCrash("Unknown XferEffect mode."); |
| 1078 | break; |
bsalomon@google.com | b79d865 | 2013-03-29 20:30:50 +0000 | [diff] [blame] | 1079 | } |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 1080 | } |
| 1081 | |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1082 | static inline EffectKey GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&) { |
commit-bot@chromium.org | 372a9c3 | 2014-04-07 17:13:10 +0000 | [diff] [blame] | 1083 | // The background may come from the dst or from a texture. |
| 1084 | int numTextures = (*drawEffect.effect())->numTextures(); |
| 1085 | SkASSERT(numTextures <= 1); |
| 1086 | return (drawEffect.castEffect<XferEffect>().mode() << 1) | numTextures; |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 1087 | } |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 1088 | |
| 1089 | private: |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1090 | static void HardLight(GrGLShaderBuilder* builder, |
| 1091 | const char* final, |
| 1092 | const char* src, |
| 1093 | const char* dst) { |
commit-bot@chromium.org | a0d9138 | 2013-04-29 17:40:33 +0000 | [diff] [blame] | 1094 | static const char kComponents[] = {'r', 'g', 'b'}; |
| 1095 | for (size_t i = 0; i < SK_ARRAY_COUNT(kComponents); ++i) { |
| 1096 | char component = kComponents[i]; |
| 1097 | builder->fsCodeAppendf("\t\tif (2.0 * %s.%c <= %s.a) {\n", src, component, src); |
| 1098 | builder->fsCodeAppendf("\t\t\t%s.%c = 2.0 * %s.%c * %s.%c;\n", final, component, src, component, dst, component); |
| 1099 | builder->fsCodeAppend("\t\t} else {\n"); |
| 1100 | builder->fsCodeAppendf("\t\t\t%s.%c = %s.a * %s.a - 2.0 * (%s.a - %s.%c) * (%s.a - %s.%c);\n", |
| 1101 | final, component, src, dst, dst, dst, component, src, src, component); |
| 1102 | builder->fsCodeAppend("\t\t}\n"); |
| 1103 | } |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1104 | builder->fsCodeAppendf("\t\t%s.rgb += %s.rgb * (1.0 - %s.a) + %s.rgb * (1.0 - %s.a);\n", |
| 1105 | final, src, dst, dst, src); |
| 1106 | } |
| 1107 | |
| 1108 | // Does one component of color-dodge |
| 1109 | static void ColorDodgeComponent(GrGLShaderBuilder* builder, |
| 1110 | const char* final, |
| 1111 | const char* src, |
| 1112 | const char* dst, |
| 1113 | const char component) { |
| 1114 | builder->fsCodeAppendf("\t\tif (0.0 == %s.%c) {\n", dst, component); |
bsalomon@google.com | 58eb1af | 2013-04-19 16:20:20 +0000 | [diff] [blame] | 1115 | builder->fsCodeAppendf("\t\t\t%s.%c = %s.%c * (1.0 - %s.a);\n", |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1116 | final, component, src, component, dst); |
| 1117 | builder->fsCodeAppend("\t\t} else {\n"); |
| 1118 | builder->fsCodeAppendf("\t\t\tfloat d = %s.a - %s.%c;\n", src, src, component); |
bsalomon@google.com | 07fa3ab | 2013-04-19 17:21:49 +0000 | [diff] [blame] | 1119 | builder->fsCodeAppend("\t\t\tif (0.0 == d) {\n"); |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1120 | builder->fsCodeAppendf("\t\t\t\t%s.%c = %s.a * %s.a + %s.%c * (1.0 - %s.a) + %s.%c * (1.0 - %s.a);\n", |
| 1121 | final, component, src, dst, src, component, dst, dst, component, |
| 1122 | src); |
| 1123 | builder->fsCodeAppend("\t\t\t} else {\n"); |
| 1124 | builder->fsCodeAppendf("\t\t\t\td = min(%s.a, %s.%c * %s.a / d);\n", |
| 1125 | dst, dst, component, src); |
| 1126 | builder->fsCodeAppendf("\t\t\t\t%s.%c = d * %s.a + %s.%c * (1.0 - %s.a) + %s.%c * (1.0 - %s.a);\n", |
| 1127 | final, component, src, src, component, dst, dst, component, src); |
| 1128 | builder->fsCodeAppend("\t\t\t}\n"); |
| 1129 | builder->fsCodeAppend("\t\t}\n"); |
| 1130 | } |
| 1131 | |
| 1132 | // Does one component of color-burn |
| 1133 | static void ColorBurnComponent(GrGLShaderBuilder* builder, |
| 1134 | const char* final, |
| 1135 | const char* src, |
| 1136 | const char* dst, |
| 1137 | const char component) { |
| 1138 | builder->fsCodeAppendf("\t\tif (%s.a == %s.%c) {\n", dst, dst, component); |
| 1139 | builder->fsCodeAppendf("\t\t\t%s.%c = %s.a * %s.a + %s.%c * (1.0 - %s.a) + %s.%c * (1.0 - %s.a);\n", |
| 1140 | final, component, src, dst, src, component, dst, dst, component, |
| 1141 | src); |
| 1142 | builder->fsCodeAppendf("\t\t} else if (0.0 == %s.%c) {\n", src, component); |
| 1143 | builder->fsCodeAppendf("\t\t\t%s.%c = %s.%c * (1.0 - %s.a);\n", |
| 1144 | final, component, dst, component, src); |
| 1145 | builder->fsCodeAppend("\t\t} else {\n"); |
| 1146 | builder->fsCodeAppendf("\t\t\tfloat d = max(0.0, %s.a - (%s.a - %s.%c) * %s.a / %s.%c);\n", |
| 1147 | dst, dst, dst, component, src, src, component); |
| 1148 | builder->fsCodeAppendf("\t\t\t%s.%c = %s.a * d + %s.%c * (1.0 - %s.a) + %s.%c * (1.0 - %s.a);\n", |
| 1149 | final, component, src, src, component, dst, dst, component, src); |
| 1150 | builder->fsCodeAppend("\t\t}\n"); |
| 1151 | } |
| 1152 | |
| 1153 | // Does one component of soft-light. Caller should have already checked that dst alpha > 0. |
| 1154 | static void SoftLightComponentPosDstAlpha(GrGLShaderBuilder* builder, |
| 1155 | const char* final, |
| 1156 | const char* src, |
| 1157 | const char* dst, |
| 1158 | const char component) { |
| 1159 | // if (2S < Sa) |
| 1160 | builder->fsCodeAppendf("\t\t\tif (2.0 * %s.%c <= %s.a) {\n", src, component, src); |
| 1161 | // (D^2 (Sa-2 S))/Da+(1-Da) S+D (-Sa+2 S+1) |
bsalomon@google.com | 6856779 | 2013-04-19 18:10:50 +0000 | [diff] [blame] | 1162 | builder->fsCodeAppendf("\t\t\t\t%s.%c = (%s.%c*%s.%c*(%s.a - 2.0*%s.%c)) / %s.a + (1.0 - %s.a) * %s.%c + %s.%c*(-%s.a + 2.0*%s.%c + 1.0);\n", |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1163 | final, component, dst, component, dst, component, src, src, |
| 1164 | component, dst, dst, src, component, dst, component, src, src, |
| 1165 | component); |
| 1166 | // else if (4D < Da) |
| 1167 | builder->fsCodeAppendf("\t\t\t} else if (4.0 * %s.%c <= %s.a) {\n", |
| 1168 | dst, component, dst); |
| 1169 | builder->fsCodeAppendf("\t\t\t\tfloat DSqd = %s.%c * %s.%c;\n", |
| 1170 | dst, component, dst, component); |
| 1171 | builder->fsCodeAppendf("\t\t\t\tfloat DCub = DSqd * %s.%c;\n", dst, component); |
| 1172 | builder->fsCodeAppendf("\t\t\t\tfloat DaSqd = %s.a * %s.a;\n", dst, dst); |
| 1173 | builder->fsCodeAppendf("\t\t\t\tfloat DaCub = DaSqd * %s.a;\n", dst); |
| 1174 | // (Da^3 (-S)+Da^2 (S-D (3 Sa-6 S-1))+12 Da D^2 (Sa-2 S)-16 D^3 (Sa-2 S))/Da^2 |
bsalomon@google.com | 6856779 | 2013-04-19 18:10:50 +0000 | [diff] [blame] | 1175 | builder->fsCodeAppendf("\t\t\t\t%s.%c = (-DaCub*%s.%c + DaSqd*(%s.%c - %s.%c * (3.0*%s.a - 6.0*%s.%c - 1.0)) + 12.0*%s.a*DSqd*(%s.a - 2.0*%s.%c) - 16.0*DCub * (%s.a - 2.0*%s.%c)) / DaSqd;\n", |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1176 | final, component, src, component, src, component, dst, component, |
| 1177 | src, src, component, dst, src, src, component, src, src, |
| 1178 | component); |
| 1179 | builder->fsCodeAppendf("\t\t\t} else {\n"); |
| 1180 | // -sqrt(Da * D) (Sa-2 S)-Da S+D (Sa-2 S+1)+S |
bsalomon@google.com | 6856779 | 2013-04-19 18:10:50 +0000 | [diff] [blame] | 1181 | builder->fsCodeAppendf("\t\t\t\t%s.%c = -sqrt(%s.a*%s.%c)*(%s.a - 2.0*%s.%c) - %s.a*%s.%c + %s.%c*(%s.a - 2.0*%s.%c + 1.0) + %s.%c;\n", |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1182 | final, component, dst, dst, component, src, src, component, dst, |
| 1183 | src, component, dst, component, src, src, component, src, |
| 1184 | component); |
| 1185 | builder->fsCodeAppendf("\t\t\t}\n"); |
| 1186 | } |
| 1187 | |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1188 | // Adds a function that takes two colors and an alpha as input. It produces a color with the |
| 1189 | // hue and saturation of the first color, the luminosity of the second color, and the input |
| 1190 | // alpha. It has this signature: |
| 1191 | // vec3 set_luminance(vec3 hueSatColor, float alpha, vec3 lumColor). |
| 1192 | static void AddLumFunction(GrGLShaderBuilder* builder, SkString* setLumFunction) { |
| 1193 | // Emit a helper that gets the luminance of a color. |
| 1194 | SkString getFunction; |
| 1195 | GrGLShaderVar getLumArgs[] = { |
| 1196 | GrGLShaderVar("color", kVec3f_GrSLType), |
| 1197 | }; |
| 1198 | SkString getLumBody("\treturn dot(vec3(0.3, 0.59, 0.11), color);\n"); |
commit-bot@chromium.org | 74a3a21 | 2013-08-30 19:43:59 +0000 | [diff] [blame] | 1199 | builder->fsEmitFunction(kFloat_GrSLType, |
| 1200 | "luminance", |
| 1201 | SK_ARRAY_COUNT(getLumArgs), getLumArgs, |
| 1202 | getLumBody.c_str(), |
| 1203 | &getFunction); |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1204 | |
| 1205 | // Emit the set luminance function. |
| 1206 | GrGLShaderVar setLumArgs[] = { |
| 1207 | GrGLShaderVar("hueSat", kVec3f_GrSLType), |
| 1208 | GrGLShaderVar("alpha", kFloat_GrSLType), |
| 1209 | GrGLShaderVar("lumColor", kVec3f_GrSLType), |
| 1210 | }; |
| 1211 | SkString setLumBody; |
| 1212 | setLumBody.printf("\tfloat diff = %s(lumColor - hueSat);\n", getFunction.c_str()); |
| 1213 | setLumBody.append("\tvec3 outColor = hueSat + diff;\n"); |
| 1214 | setLumBody.appendf("\tfloat outLum = %s(outColor);\n", getFunction.c_str()); |
| 1215 | setLumBody.append("\tfloat minComp = min(min(outColor.r, outColor.g), outColor.b);\n" |
| 1216 | "\tfloat maxComp = max(max(outColor.r, outColor.g), outColor.b);\n" |
| 1217 | "\tif (minComp < 0.0) {\n" |
| 1218 | "\t\toutColor = outLum + ((outColor - vec3(outLum, outLum, outLum)) * outLum) / (outLum - minComp);\n" |
| 1219 | "\t}\n" |
| 1220 | "\tif (maxComp > alpha) {\n" |
| 1221 | "\t\toutColor = outLum + ((outColor - vec3(outLum, outLum, outLum)) * (alpha - outLum)) / (maxComp - outLum);\n" |
| 1222 | "\t}\n" |
| 1223 | "\treturn outColor;\n"); |
commit-bot@chromium.org | 74a3a21 | 2013-08-30 19:43:59 +0000 | [diff] [blame] | 1224 | builder->fsEmitFunction(kVec3f_GrSLType, |
| 1225 | "set_luminance", |
| 1226 | SK_ARRAY_COUNT(setLumArgs), setLumArgs, |
| 1227 | setLumBody.c_str(), |
| 1228 | setLumFunction); |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1229 | } |
| 1230 | |
| 1231 | // Adds a function that creates a color with the hue and luminosity of one input color and |
| 1232 | // the saturation of another color. It will have this signature: |
| 1233 | // float set_saturation(vec3 hueLumColor, vec3 satColor) |
| 1234 | static void AddSatFunction(GrGLShaderBuilder* builder, SkString* setSatFunction) { |
| 1235 | // Emit a helper that gets the saturation of a color |
| 1236 | SkString getFunction; |
| 1237 | GrGLShaderVar getSatArgs[] = { GrGLShaderVar("color", kVec3f_GrSLType) }; |
| 1238 | SkString getSatBody; |
| 1239 | getSatBody.printf("\treturn max(max(color.r, color.g), color.b) - " |
| 1240 | "min(min(color.r, color.g), color.b);\n"); |
commit-bot@chromium.org | 74a3a21 | 2013-08-30 19:43:59 +0000 | [diff] [blame] | 1241 | builder->fsEmitFunction(kFloat_GrSLType, |
| 1242 | "saturation", |
| 1243 | SK_ARRAY_COUNT(getSatArgs), getSatArgs, |
| 1244 | getSatBody.c_str(), |
| 1245 | &getFunction); |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1246 | |
commit-bot@chromium.org | c718b35 | 2013-04-29 17:36:14 +0000 | [diff] [blame] | 1247 | // Emit a helper that sets the saturation given sorted input channels. This used |
| 1248 | // to use inout params for min, mid, and max components but that seems to cause |
| 1249 | // problems on PowerVR drivers. So instead it returns a vec3 where r, g ,b are the |
| 1250 | // adjusted min, mid, and max inputs, respectively. |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1251 | SkString helperFunction; |
| 1252 | GrGLShaderVar helperArgs[] = { |
| 1253 | GrGLShaderVar("minComp", kFloat_GrSLType), |
| 1254 | GrGLShaderVar("midComp", kFloat_GrSLType), |
| 1255 | GrGLShaderVar("maxComp", kFloat_GrSLType), |
| 1256 | GrGLShaderVar("sat", kFloat_GrSLType), |
| 1257 | }; |
commit-bot@chromium.org | c718b35 | 2013-04-29 17:36:14 +0000 | [diff] [blame] | 1258 | static const char kHelperBody[] = "\tif (minComp < maxComp) {\n" |
| 1259 | "\t\tvec3 result;\n" |
| 1260 | "\t\tresult.r = 0.0;\n" |
| 1261 | "\t\tresult.g = sat * (midComp - minComp) / (maxComp - minComp);\n" |
| 1262 | "\t\tresult.b = sat;\n" |
| 1263 | "\t\treturn result;\n" |
| 1264 | "\t} else {\n" |
| 1265 | "\t\treturn vec3(0, 0, 0);\n" |
| 1266 | "\t}\n"; |
commit-bot@chromium.org | 74a3a21 | 2013-08-30 19:43:59 +0000 | [diff] [blame] | 1267 | builder->fsEmitFunction(kVec3f_GrSLType, |
| 1268 | "set_saturation_helper", |
| 1269 | SK_ARRAY_COUNT(helperArgs), helperArgs, |
| 1270 | kHelperBody, |
| 1271 | &helperFunction); |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1272 | |
| 1273 | GrGLShaderVar setSatArgs[] = { |
| 1274 | GrGLShaderVar("hueLumColor", kVec3f_GrSLType), |
| 1275 | GrGLShaderVar("satColor", kVec3f_GrSLType), |
| 1276 | }; |
| 1277 | const char* helpFunc = helperFunction.c_str(); |
| 1278 | SkString setSatBody; |
| 1279 | setSatBody.appendf("\tfloat sat = %s(satColor);\n" |
| 1280 | "\tif (hueLumColor.r <= hueLumColor.g) {\n" |
| 1281 | "\t\tif (hueLumColor.g <= hueLumColor.b) {\n" |
commit-bot@chromium.org | c718b35 | 2013-04-29 17:36:14 +0000 | [diff] [blame] | 1282 | "\t\t\thueLumColor.rgb = %s(hueLumColor.r, hueLumColor.g, hueLumColor.b, sat);\n" |
commit-bot@chromium.org | 18c41ac | 2013-04-25 00:40:41 +0000 | [diff] [blame] | 1283 | "\t\t} else if (hueLumColor.r <= hueLumColor.b) {\n" |
commit-bot@chromium.org | c718b35 | 2013-04-29 17:36:14 +0000 | [diff] [blame] | 1284 | "\t\t\thueLumColor.rbg = %s(hueLumColor.r, hueLumColor.b, hueLumColor.g, sat);\n" |
commit-bot@chromium.org | 18c41ac | 2013-04-25 00:40:41 +0000 | [diff] [blame] | 1285 | "\t\t} else {\n" |
commit-bot@chromium.org | c718b35 | 2013-04-29 17:36:14 +0000 | [diff] [blame] | 1286 | "\t\t\thueLumColor.brg = %s(hueLumColor.b, hueLumColor.r, hueLumColor.g, sat);\n" |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1287 | "\t\t}\n" |
| 1288 | "\t} else if (hueLumColor.r <= hueLumColor.b) {\n" |
commit-bot@chromium.org | c718b35 | 2013-04-29 17:36:14 +0000 | [diff] [blame] | 1289 | "\t\thueLumColor.grb = %s(hueLumColor.g, hueLumColor.r, hueLumColor.b, sat);\n" |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1290 | "\t} else if (hueLumColor.g <= hueLumColor.b) {\n" |
commit-bot@chromium.org | c718b35 | 2013-04-29 17:36:14 +0000 | [diff] [blame] | 1291 | "\t\thueLumColor.gbr = %s(hueLumColor.g, hueLumColor.b, hueLumColor.r, sat);\n" |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1292 | "\t} else {\n" |
commit-bot@chromium.org | c718b35 | 2013-04-29 17:36:14 +0000 | [diff] [blame] | 1293 | "\t\thueLumColor.bgr = %s(hueLumColor.b, hueLumColor.g, hueLumColor.r, sat);\n" |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1294 | "\t}\n" |
commit-bot@chromium.org | c718b35 | 2013-04-29 17:36:14 +0000 | [diff] [blame] | 1295 | "\treturn hueLumColor;\n", |
commit-bot@chromium.org | 18c41ac | 2013-04-25 00:40:41 +0000 | [diff] [blame] | 1296 | getFunction.c_str(), helpFunc, helpFunc, helpFunc, helpFunc, |
| 1297 | helpFunc, helpFunc); |
commit-bot@chromium.org | 74a3a21 | 2013-08-30 19:43:59 +0000 | [diff] [blame] | 1298 | builder->fsEmitFunction(kVec3f_GrSLType, |
| 1299 | "set_saturation", |
| 1300 | SK_ARRAY_COUNT(setSatArgs), setSatArgs, |
| 1301 | setSatBody.c_str(), |
| 1302 | setSatFunction); |
bsalomon@google.com | 77cf460 | 2013-04-22 21:05:48 +0000 | [diff] [blame] | 1303 | |
| 1304 | } |
| 1305 | |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 1306 | typedef GrGLEffect INHERITED; |
| 1307 | }; |
| 1308 | |
| 1309 | GR_DECLARE_EFFECT_TEST; |
| 1310 | |
| 1311 | private: |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 1312 | XferEffect(SkXfermode::Mode mode, GrTexture* background) |
| 1313 | : fMode(mode) { |
| 1314 | if (background) { |
bsalomon@google.com | 77af680 | 2013-10-02 13:04:56 +0000 | [diff] [blame] | 1315 | fBackgroundTransform.reset(kLocal_GrCoordSet, background); |
| 1316 | this->addCoordTransform(&fBackgroundTransform); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 1317 | fBackgroundAccess.reset(background); |
| 1318 | this->addTextureAccess(&fBackgroundAccess); |
| 1319 | } else { |
| 1320 | this->setWillReadDstColor(); |
| 1321 | } |
| 1322 | } |
| 1323 | virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE { |
| 1324 | const XferEffect& s = CastEffect<XferEffect>(other); |
| 1325 | return fMode == s.fMode && |
| 1326 | fBackgroundAccess.getTexture() == s.fBackgroundAccess.getTexture(); |
| 1327 | } |
skia.committer@gmail.com | 64b682c | 2013-04-20 07:01:07 +0000 | [diff] [blame] | 1328 | |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1329 | SkXfermode::Mode fMode; |
bsalomon@google.com | 77af680 | 2013-10-02 13:04:56 +0000 | [diff] [blame] | 1330 | GrCoordTransform fBackgroundTransform; |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 1331 | GrTextureAccess fBackgroundAccess; |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 1332 | |
| 1333 | typedef GrEffect INHERITED; |
| 1334 | }; |
| 1335 | |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1336 | GR_DEFINE_EFFECT_TEST(XferEffect); |
commit-bot@chromium.org | e0e7cfe | 2013-09-09 20:09:12 +0000 | [diff] [blame] | 1337 | GrEffectRef* XferEffect::TestCreate(SkRandom* rand, |
bsalomon@google.com | 8da9bc7 | 2013-04-19 15:03:21 +0000 | [diff] [blame] | 1338 | GrContext*, |
| 1339 | const GrDrawTargetCaps&, |
| 1340 | GrTexture*[]) { |
commit-bot@chromium.org | a0d9138 | 2013-04-29 17:40:33 +0000 | [diff] [blame] | 1341 | int mode = rand->nextRangeU(SkXfermode::kLastCoeffMode + 1, SkXfermode::kLastSeparableMode); |
skia.committer@gmail.com | 2cf444f | 2013-04-26 07:00:58 +0000 | [diff] [blame] | 1342 | |
commit-bot@chromium.org | ccecbbb | 2013-10-24 13:33:32 +0000 | [diff] [blame] | 1343 | AutoEffectUnref gEffect(SkNEW_ARGS(XferEffect, (static_cast<SkXfermode::Mode>(mode), NULL))); |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 1344 | return CreateEffectRef(gEffect); |
| 1345 | } |
| 1346 | |
| 1347 | #endif |
| 1348 | |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 1349 | /////////////////////////////////////////////////////////////////////////////// |
| 1350 | /////////////////////////////////////////////////////////////////////////////// |
| 1351 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 1352 | SkProcCoeffXfermode::SkProcCoeffXfermode(SkReadBuffer& buffer) : INHERITED(buffer) { |
reed@google.com | 52314f8 | 2013-11-21 21:05:06 +0000 | [diff] [blame] | 1353 | uint32_t mode32 = buffer.read32() % SK_ARRAY_COUNT(gProcCoeffs); |
| 1354 | if (mode32 >= SK_ARRAY_COUNT(gProcCoeffs)) { |
| 1355 | // out of range, just set to something harmless |
| 1356 | mode32 = SkXfermode::kSrcOut_Mode; |
| 1357 | } |
| 1358 | fMode = (SkXfermode::Mode)mode32; |
skia.committer@gmail.com | f61ebc0 | 2013-11-22 07:02:24 +0000 | [diff] [blame] | 1359 | |
reed@google.com | 52314f8 | 2013-11-21 21:05:06 +0000 | [diff] [blame] | 1360 | const ProcCoeff& rec = gProcCoeffs[fMode]; |
| 1361 | // these may be valid, or may be CANNOT_USE_COEFF |
| 1362 | fSrcCoeff = rec.fSC; |
| 1363 | fDstCoeff = rec.fDC; |
| 1364 | // now update our function-ptr in the super class |
| 1365 | this->INHERITED::setProc(rec.fProc); |
| 1366 | } |
| 1367 | |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 1368 | bool SkProcCoeffXfermode::asMode(Mode* mode) const { |
| 1369 | if (mode) { |
| 1370 | *mode = fMode; |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 1371 | } |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 1372 | return true; |
| 1373 | } |
commit-bot@chromium.org | 84cc1eb | 2013-10-08 16:47:22 +0000 | [diff] [blame] | 1374 | |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 1375 | bool SkProcCoeffXfermode::asCoeff(Coeff* sc, Coeff* dc) const { |
| 1376 | if (CANNOT_USE_COEFF == fSrcCoeff) { |
djsollen@google.com | 6f980c6 | 2013-10-08 16:59:53 +0000 | [diff] [blame] | 1377 | return false; |
| 1378 | } |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 1379 | |
| 1380 | if (sc) { |
| 1381 | *sc = fSrcCoeff; |
| 1382 | } |
| 1383 | if (dc) { |
| 1384 | *dc = fDstCoeff; |
| 1385 | } |
| 1386 | return true; |
| 1387 | } |
| 1388 | |
| 1389 | #if SK_SUPPORT_GPU |
senorblanco@chromium.org | 1a6382f | 2013-10-23 18:41:36 +0000 | [diff] [blame] | 1390 | bool SkProcCoeffXfermode::asNewEffect(GrEffectRef** effect, |
| 1391 | GrTexture* background) const { |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 1392 | if (XferEffect::IsSupportedMode(fMode)) { |
| 1393 | if (NULL != effect) { |
| 1394 | *effect = XferEffect::Create(fMode, background); |
| 1395 | SkASSERT(NULL != *effect); |
| 1396 | } |
| 1397 | return true; |
| 1398 | } |
| 1399 | return false; |
| 1400 | } |
bsalomon@google.com | 26e18b5 | 2013-03-29 19:22:36 +0000 | [diff] [blame] | 1401 | #endif |
bsalomon@google.com | f51c013 | 2013-03-27 18:31:15 +0000 | [diff] [blame] | 1402 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 1403 | void SkProcCoeffXfermode::flatten(SkWriteBuffer& buffer) const { |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 1404 | this->INHERITED::flatten(buffer); |
| 1405 | buffer.write32(fMode); |
| 1406 | } |
vandebo@chromium.org | 4854327 | 2011-02-08 19:28:07 +0000 | [diff] [blame] | 1407 | |
commit-bot@chromium.org | d7aaf60 | 2013-04-01 12:51:34 +0000 | [diff] [blame] | 1408 | const char* SkXfermode::ModeName(Mode mode) { |
| 1409 | SkASSERT((unsigned) mode <= (unsigned)kLastMode); |
| 1410 | const char* gModeStrings[] = { |
| 1411 | "Clear", "Src", "Dst", "SrcOver", "DstOver", "SrcIn", "DstIn", |
| 1412 | "SrcOut", "DstOut", "SrcATop", "DstATop", "Xor", "Plus", |
| 1413 | "Modulate", "Screen", "Overlay", "Darken", "Lighten", "ColorDodge", |
| 1414 | "ColorBurn", "HardLight", "SoftLight", "Difference", "Exclusion", |
| 1415 | "Multiply", "Hue", "Saturation", "Color", "Luminosity" |
| 1416 | }; |
| 1417 | return gModeStrings[mode]; |
| 1418 | SK_COMPILE_ASSERT(SK_ARRAY_COUNT(gModeStrings) == kLastMode + 1, mode_count); |
| 1419 | } |
| 1420 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1421 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1422 | void SkProcCoeffXfermode::toString(SkString* str) const { |
| 1423 | str->append("SkProcCoeffXfermode: "); |
| 1424 | |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1425 | str->append("mode: "); |
commit-bot@chromium.org | d7aaf60 | 2013-04-01 12:51:34 +0000 | [diff] [blame] | 1426 | str->append(ModeName(fMode)); |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1427 | |
| 1428 | static const char* gCoeffStrings[kCoeffCount] = { |
skia.committer@gmail.com | 98ded84 | 2013-01-23 07:06:17 +0000 | [diff] [blame] | 1429 | "Zero", "One", "SC", "ISC", "DC", "IDC", "SA", "ISA", "DA", "IDA" |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1430 | }; |
| 1431 | |
| 1432 | str->append(" src: "); |
| 1433 | if (CANNOT_USE_COEFF == fSrcCoeff) { |
| 1434 | str->append("can't use"); |
| 1435 | } else { |
| 1436 | str->append(gCoeffStrings[fSrcCoeff]); |
| 1437 | } |
| 1438 | |
| 1439 | str->append(" dst: "); |
| 1440 | if (CANNOT_USE_COEFF == fDstCoeff) { |
| 1441 | str->append("can't use"); |
| 1442 | } else { |
| 1443 | str->append(gCoeffStrings[fDstCoeff]); |
| 1444 | } |
| 1445 | } |
| 1446 | #endif |
| 1447 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1448 | /////////////////////////////////////////////////////////////////////////////// |
| 1449 | |
| 1450 | class SkClearXfermode : public SkProcCoeffXfermode { |
| 1451 | public: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1452 | static SkClearXfermode* Create(const ProcCoeff& rec) { |
| 1453 | return SkNEW_ARGS(SkClearXfermode, (rec)); |
| 1454 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1455 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1456 | virtual void xfer32(SkPMColor*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
| 1457 | virtual void xferA8(SkAlpha*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1458 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1459 | SK_TO_STRING_OVERRIDE() |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 1460 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkClearXfermode) |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1461 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1462 | private: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1463 | SkClearXfermode(const ProcCoeff& rec) : SkProcCoeffXfermode(rec, kClear_Mode) {} |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 1464 | SkClearXfermode(SkReadBuffer& buffer) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1465 | : SkProcCoeffXfermode(buffer) {} |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1466 | |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1467 | typedef SkProcCoeffXfermode INHERITED; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1468 | }; |
| 1469 | |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1470 | void SkClearXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 1471 | const SkPMColor* SK_RESTRICT, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1472 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1473 | SkASSERT(dst && count >= 0); |
| 1474 | |
| 1475 | if (NULL == aa) { |
| 1476 | memset(dst, 0, count << 2); |
| 1477 | } else { |
| 1478 | for (int i = count - 1; i >= 0; --i) { |
| 1479 | unsigned a = aa[i]; |
| 1480 | if (0xFF == a) { |
| 1481 | dst[i] = 0; |
| 1482 | } else if (a != 0) { |
| 1483 | dst[i] = SkAlphaMulQ(dst[i], SkAlpha255To256(255 - a)); |
| 1484 | } |
| 1485 | } |
| 1486 | } |
| 1487 | } |
| 1488 | void SkClearXfermode::xferA8(SkAlpha* SK_RESTRICT dst, |
| 1489 | const SkPMColor* SK_RESTRICT, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1490 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1491 | SkASSERT(dst && count >= 0); |
| 1492 | |
| 1493 | if (NULL == aa) { |
| 1494 | memset(dst, 0, count); |
| 1495 | } else { |
| 1496 | for (int i = count - 1; i >= 0; --i) { |
| 1497 | unsigned a = aa[i]; |
| 1498 | if (0xFF == a) { |
| 1499 | dst[i] = 0; |
| 1500 | } else if (0 != a) { |
| 1501 | dst[i] = SkAlphaMulAlpha(dst[i], 255 - a); |
| 1502 | } |
| 1503 | } |
| 1504 | } |
| 1505 | } |
| 1506 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1507 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1508 | void SkClearXfermode::toString(SkString* str) const { |
| 1509 | this->INHERITED::toString(str); |
| 1510 | } |
| 1511 | #endif |
| 1512 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1513 | /////////////////////////////////////////////////////////////////////////////// |
| 1514 | |
| 1515 | class SkSrcXfermode : public SkProcCoeffXfermode { |
| 1516 | public: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1517 | static SkSrcXfermode* Create(const ProcCoeff& rec) { |
| 1518 | return SkNEW_ARGS(SkSrcXfermode, (rec)); |
| 1519 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1520 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1521 | virtual void xfer32(SkPMColor*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
| 1522 | virtual void xferA8(SkAlpha*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1523 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1524 | SK_TO_STRING_OVERRIDE() |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 1525 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSrcXfermode) |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1526 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1527 | private: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1528 | SkSrcXfermode(const ProcCoeff& rec) : SkProcCoeffXfermode(rec, kSrc_Mode) {} |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 1529 | SkSrcXfermode(SkReadBuffer& buffer) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1530 | : SkProcCoeffXfermode(buffer) {} |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1531 | |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1532 | typedef SkProcCoeffXfermode INHERITED; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1533 | }; |
| 1534 | |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1535 | void SkSrcXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 1536 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1537 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1538 | SkASSERT(dst && src && count >= 0); |
| 1539 | |
| 1540 | if (NULL == aa) { |
| 1541 | memcpy(dst, src, count << 2); |
| 1542 | } else { |
| 1543 | for (int i = count - 1; i >= 0; --i) { |
| 1544 | unsigned a = aa[i]; |
| 1545 | if (a == 0xFF) { |
| 1546 | dst[i] = src[i]; |
| 1547 | } else if (a != 0) { |
| 1548 | dst[i] = SkFourByteInterp(src[i], dst[i], a); |
| 1549 | } |
| 1550 | } |
| 1551 | } |
| 1552 | } |
| 1553 | |
| 1554 | void SkSrcXfermode::xferA8(SkAlpha* SK_RESTRICT dst, |
| 1555 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1556 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1557 | SkASSERT(dst && src && count >= 0); |
| 1558 | |
| 1559 | if (NULL == aa) { |
| 1560 | for (int i = count - 1; i >= 0; --i) { |
| 1561 | dst[i] = SkToU8(SkGetPackedA32(src[i])); |
| 1562 | } |
| 1563 | } else { |
| 1564 | for (int i = count - 1; i >= 0; --i) { |
| 1565 | unsigned a = aa[i]; |
| 1566 | if (0 != a) { |
| 1567 | unsigned srcA = SkGetPackedA32(src[i]); |
| 1568 | if (a == 0xFF) { |
| 1569 | dst[i] = SkToU8(srcA); |
| 1570 | } else { |
| 1571 | dst[i] = SkToU8(SkAlphaBlend(srcA, dst[i], a)); |
| 1572 | } |
| 1573 | } |
| 1574 | } |
| 1575 | } |
| 1576 | } |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1577 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1578 | void SkSrcXfermode::toString(SkString* str) const { |
| 1579 | this->INHERITED::toString(str); |
| 1580 | } |
| 1581 | #endif |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1582 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1583 | /////////////////////////////////////////////////////////////////////////////// |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1584 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1585 | class SkDstInXfermode : public SkProcCoeffXfermode { |
| 1586 | public: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1587 | static SkDstInXfermode* Create(const ProcCoeff& rec) { |
| 1588 | return SkNEW_ARGS(SkDstInXfermode, (rec)); |
| 1589 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1590 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1591 | virtual void xfer32(SkPMColor*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1592 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1593 | SK_TO_STRING_OVERRIDE() |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 1594 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDstInXfermode) |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1595 | |
| 1596 | private: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1597 | SkDstInXfermode(const ProcCoeff& rec) : SkProcCoeffXfermode(rec, kDstIn_Mode) {} |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 1598 | SkDstInXfermode(SkReadBuffer& buffer) : INHERITED(buffer) {} |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1599 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1600 | typedef SkProcCoeffXfermode INHERITED; |
| 1601 | }; |
| 1602 | |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1603 | void SkDstInXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 1604 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1605 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1606 | SkASSERT(dst && src); |
| 1607 | |
| 1608 | if (count <= 0) { |
| 1609 | return; |
| 1610 | } |
| 1611 | if (NULL != aa) { |
| 1612 | return this->INHERITED::xfer32(dst, src, count, aa); |
| 1613 | } |
| 1614 | |
| 1615 | do { |
| 1616 | unsigned a = SkGetPackedA32(*src); |
| 1617 | *dst = SkAlphaMulQ(*dst, SkAlpha255To256(a)); |
| 1618 | dst++; |
| 1619 | src++; |
| 1620 | } while (--count != 0); |
| 1621 | } |
| 1622 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1623 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1624 | void SkDstInXfermode::toString(SkString* str) const { |
| 1625 | this->INHERITED::toString(str); |
| 1626 | } |
| 1627 | #endif |
| 1628 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1629 | /////////////////////////////////////////////////////////////////////////////// |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1630 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1631 | class SkDstOutXfermode : public SkProcCoeffXfermode { |
| 1632 | public: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1633 | static SkDstOutXfermode* Create(const ProcCoeff& rec) { |
| 1634 | return SkNEW_ARGS(SkDstOutXfermode, (rec)); |
| 1635 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1636 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1637 | virtual void xfer32(SkPMColor*, const SkPMColor*, int, const SkAlpha*) const SK_OVERRIDE; |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1638 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1639 | SK_TO_STRING_OVERRIDE() |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 1640 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDstOutXfermode) |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1641 | |
| 1642 | private: |
commit-bot@chromium.org | 0a2bf90 | 2014-02-20 20:40:19 +0000 | [diff] [blame] | 1643 | SkDstOutXfermode(const ProcCoeff& rec) : SkProcCoeffXfermode(rec, kDstOut_Mode) {} |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 1644 | SkDstOutXfermode(SkReadBuffer& buffer) |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1645 | : INHERITED(buffer) {} |
| 1646 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1647 | typedef SkProcCoeffXfermode INHERITED; |
| 1648 | }; |
| 1649 | |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1650 | void SkDstOutXfermode::xfer32(SkPMColor* SK_RESTRICT dst, |
| 1651 | const SkPMColor* SK_RESTRICT src, int count, |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1652 | const SkAlpha* SK_RESTRICT aa) const { |
reed@google.com | 86ab6c6 | 2011-11-28 15:26:14 +0000 | [diff] [blame] | 1653 | SkASSERT(dst && src); |
| 1654 | |
| 1655 | if (count <= 0) { |
| 1656 | return; |
| 1657 | } |
| 1658 | if (NULL != aa) { |
| 1659 | return this->INHERITED::xfer32(dst, src, count, aa); |
| 1660 | } |
| 1661 | |
| 1662 | do { |
| 1663 | unsigned a = SkGetPackedA32(*src); |
| 1664 | *dst = SkAlphaMulQ(*dst, SkAlpha255To256(255 - a)); |
| 1665 | dst++; |
| 1666 | src++; |
| 1667 | } while (--count != 0); |
| 1668 | } |
| 1669 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 1670 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | b83b6b4 | 2013-01-22 14:32:09 +0000 | [diff] [blame] | 1671 | void SkDstOutXfermode::toString(SkString* str) const { |
| 1672 | this->INHERITED::toString(str); |
| 1673 | } |
| 1674 | #endif |
| 1675 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1676 | /////////////////////////////////////////////////////////////////////////////// |
| 1677 | |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1678 | SK_DECLARE_STATIC_MUTEX(gCachedXfermodesMutex); |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 1679 | static SkXfermode* gCachedXfermodes[SkXfermode::kLastMode + 1]; // All NULL to start. |
| 1680 | static bool gXfermodeCached[SK_ARRAY_COUNT(gCachedXfermodes)]; // All false to start. |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1681 | |
| 1682 | void SkXfermode::Term() { |
| 1683 | SkAutoMutexAcquire ac(gCachedXfermodesMutex); |
| 1684 | |
| 1685 | for (size_t i = 0; i < SK_ARRAY_COUNT(gCachedXfermodes); ++i) { |
| 1686 | SkSafeUnref(gCachedXfermodes[i]); |
| 1687 | gCachedXfermodes[i] = NULL; |
| 1688 | } |
| 1689 | } |
| 1690 | |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 1691 | extern SkProcCoeffXfermode* SkPlatformXfermodeFactory(const ProcCoeff& rec, |
| 1692 | SkXfermode::Mode mode); |
commit-bot@chromium.org | d611864 | 2013-12-06 11:32:27 +0000 | [diff] [blame] | 1693 | extern SkXfermodeProc SkPlatformXfermodeProcFactory(SkXfermode::Mode mode); |
commit-bot@chromium.org | df187c7 | 2013-10-09 14:39:46 +0000 | [diff] [blame] | 1694 | |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 1695 | |
| 1696 | static void create_mode(SkXfermode::Mode mode) { |
| 1697 | SkASSERT(NULL == gCachedXfermodes[mode]); |
| 1698 | |
| 1699 | ProcCoeff rec = gProcCoeffs[mode]; |
| 1700 | SkXfermodeProc pp = SkPlatformXfermodeProcFactory(mode); |
| 1701 | if (pp != NULL) { |
| 1702 | rec.fProc = pp; |
| 1703 | } |
| 1704 | |
| 1705 | SkXfermode* xfer = NULL; |
| 1706 | // check if we have a platform optim for that |
| 1707 | SkProcCoeffXfermode* xfm = SkPlatformXfermodeFactory(rec, mode); |
| 1708 | if (xfm != NULL) { |
| 1709 | xfer = xfm; |
| 1710 | } else { |
| 1711 | // All modes can in theory be represented by the ProcCoeff rec, since |
| 1712 | // it contains function ptrs. However, a few modes are both simple and |
| 1713 | // commonly used, so we call those out for their own subclasses here. |
| 1714 | switch (mode) { |
| 1715 | case SkXfermode::kClear_Mode: |
| 1716 | xfer = SkClearXfermode::Create(rec); |
| 1717 | break; |
| 1718 | case SkXfermode::kSrc_Mode: |
| 1719 | xfer = SkSrcXfermode::Create(rec); |
| 1720 | break; |
| 1721 | case SkXfermode::kSrcOver_Mode: |
| 1722 | SkASSERT(false); // should not land here |
| 1723 | break; |
| 1724 | case SkXfermode::kDstIn_Mode: |
| 1725 | xfer = SkDstInXfermode::Create(rec); |
| 1726 | break; |
| 1727 | case SkXfermode::kDstOut_Mode: |
| 1728 | xfer = SkDstOutXfermode::Create(rec); |
| 1729 | break; |
| 1730 | default: |
| 1731 | // no special-case, just rely in the rec and its function-ptrs |
| 1732 | xfer = SkProcCoeffXfermode::Create(rec, mode); |
| 1733 | break; |
| 1734 | } |
| 1735 | } |
| 1736 | gCachedXfermodes[mode] = xfer; |
| 1737 | } |
| 1738 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1739 | SkXfermode* SkXfermode::Create(Mode mode) { |
| 1740 | SkASSERT(SK_ARRAY_COUNT(gProcCoeffs) == kModeCount); |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1741 | SkASSERT(SK_ARRAY_COUNT(gCachedXfermodes) == kModeCount); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1742 | |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1743 | if ((unsigned)mode >= kModeCount) { |
| 1744 | // report error |
| 1745 | return NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1746 | } |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1747 | |
| 1748 | // Skia's "defaut" mode is srcover. NULL in SkPaint is interpreted as srcover |
| 1749 | // so we can just return NULL from the factory. |
| 1750 | if (kSrcOver_Mode == mode) { |
| 1751 | return NULL; |
| 1752 | } |
| 1753 | |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 1754 | SkOnce(&gXfermodeCached[mode], &gCachedXfermodesMutex, create_mode, mode); |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1755 | SkXfermode* xfer = gCachedXfermodes[mode]; |
commit-bot@chromium.org | 140950c | 2014-03-28 20:04:11 +0000 | [diff] [blame] | 1756 | SkASSERT(xfer != NULL); |
commit-bot@chromium.org | 8649057 | 2013-10-04 16:52:55 +0000 | [diff] [blame] | 1757 | return SkSafeRef(xfer); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1758 | } |
| 1759 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1760 | SkXfermodeProc SkXfermode::GetProc(Mode mode) { |
| 1761 | SkXfermodeProc proc = NULL; |
| 1762 | if ((unsigned)mode < kModeCount) { |
| 1763 | proc = gProcCoeffs[mode].fProc; |
| 1764 | } |
| 1765 | return proc; |
| 1766 | } |
| 1767 | |
| 1768 | bool SkXfermode::ModeAsCoeff(Mode mode, Coeff* src, Coeff* dst) { |
| 1769 | SkASSERT(SK_ARRAY_COUNT(gProcCoeffs) == kModeCount); |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1770 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1771 | if ((unsigned)mode >= (unsigned)kModeCount) { |
| 1772 | // illegal mode parameter |
| 1773 | return false; |
| 1774 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1775 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1776 | const ProcCoeff& rec = gProcCoeffs[mode]; |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1777 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1778 | if (CANNOT_USE_COEFF == rec.fSC) { |
| 1779 | return false; |
| 1780 | } |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1781 | |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1782 | SkASSERT(CANNOT_USE_COEFF != rec.fDC); |
| 1783 | if (src) { |
| 1784 | *src = rec.fSC; |
| 1785 | } |
| 1786 | if (dst) { |
| 1787 | *dst = rec.fDC; |
| 1788 | } |
| 1789 | return true; |
| 1790 | } |
| 1791 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1792 | bool SkXfermode::AsMode(const SkXfermode* xfer, Mode* mode) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1793 | if (NULL == xfer) { |
| 1794 | if (mode) { |
| 1795 | *mode = kSrcOver_Mode; |
| 1796 | } |
| 1797 | return true; |
| 1798 | } |
reed@google.com | c0d4aa2 | 2011-04-13 21:12:04 +0000 | [diff] [blame] | 1799 | return xfer->asMode(mode); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1800 | } |
| 1801 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1802 | bool SkXfermode::AsCoeff(const SkXfermode* xfer, Coeff* src, Coeff* dst) { |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1803 | if (NULL == xfer) { |
| 1804 | return ModeAsCoeff(kSrcOver_Mode, src, dst); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1805 | } |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 1806 | return xfer->asCoeff(src, dst); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1807 | } |
| 1808 | |
reed@google.com | 30da745 | 2012-12-17 19:55:24 +0000 | [diff] [blame] | 1809 | bool SkXfermode::IsMode(const SkXfermode* xfer, Mode mode) { |
mike@reedtribe.org | e303fcf | 2011-11-17 02:16:43 +0000 | [diff] [blame] | 1810 | // if xfer==null then the mode is srcover |
| 1811 | Mode m = kSrcOver_Mode; |
| 1812 | if (xfer && !xfer->asMode(&m)) { |
| 1813 | return false; |
| 1814 | } |
| 1815 | return mode == m; |
| 1816 | } |
| 1817 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1818 | /////////////////////////////////////////////////////////////////////////////// |
| 1819 | //////////// 16bit xfermode procs |
| 1820 | |
| 1821 | #ifdef SK_DEBUG |
| 1822 | static bool require_255(SkPMColor src) { return SkGetPackedA32(src) == 0xFF; } |
| 1823 | static bool require_0(SkPMColor src) { return SkGetPackedA32(src) == 0; } |
| 1824 | #endif |
| 1825 | |
| 1826 | static uint16_t src_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1827 | SkASSERT(require_255(src)); |
| 1828 | return SkPixel32ToPixel16(src); |
| 1829 | } |
| 1830 | |
| 1831 | static uint16_t dst_modeproc16(SkPMColor src, uint16_t dst) { |
| 1832 | return dst; |
| 1833 | } |
| 1834 | |
| 1835 | static uint16_t srcover_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1836 | SkASSERT(require_0(src)); |
| 1837 | return dst; |
| 1838 | } |
| 1839 | |
| 1840 | static uint16_t srcover_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1841 | SkASSERT(require_255(src)); |
| 1842 | return SkPixel32ToPixel16(src); |
| 1843 | } |
| 1844 | |
| 1845 | static uint16_t dstover_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1846 | SkASSERT(require_0(src)); |
| 1847 | return dst; |
| 1848 | } |
| 1849 | |
| 1850 | static uint16_t dstover_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1851 | SkASSERT(require_255(src)); |
| 1852 | return dst; |
| 1853 | } |
| 1854 | |
| 1855 | static uint16_t srcin_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1856 | SkASSERT(require_255(src)); |
| 1857 | return SkPixel32ToPixel16(src); |
| 1858 | } |
| 1859 | |
| 1860 | static uint16_t dstin_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1861 | SkASSERT(require_255(src)); |
| 1862 | return dst; |
| 1863 | } |
| 1864 | |
| 1865 | static uint16_t dstout_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1866 | SkASSERT(require_0(src)); |
| 1867 | return dst; |
| 1868 | } |
| 1869 | |
| 1870 | static uint16_t srcatop_modeproc16(SkPMColor src, uint16_t dst) { |
| 1871 | unsigned isa = 255 - SkGetPackedA32(src); |
tomhudson@google.com | 1447c6f | 2011-04-27 14:09:52 +0000 | [diff] [blame] | 1872 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1873 | return SkPackRGB16( |
| 1874 | SkPacked32ToR16(src) + SkAlphaMulAlpha(SkGetPackedR16(dst), isa), |
| 1875 | SkPacked32ToG16(src) + SkAlphaMulAlpha(SkGetPackedG16(dst), isa), |
| 1876 | SkPacked32ToB16(src) + SkAlphaMulAlpha(SkGetPackedB16(dst), isa)); |
| 1877 | } |
| 1878 | |
| 1879 | static uint16_t srcatop_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1880 | SkASSERT(require_0(src)); |
| 1881 | return dst; |
| 1882 | } |
| 1883 | |
| 1884 | static uint16_t srcatop_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1885 | SkASSERT(require_255(src)); |
| 1886 | return SkPixel32ToPixel16(src); |
| 1887 | } |
| 1888 | |
| 1889 | static uint16_t dstatop_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1890 | SkASSERT(require_255(src)); |
| 1891 | return dst; |
| 1892 | } |
| 1893 | |
| 1894 | /********* |
| 1895 | darken and lighten boil down to this. |
| 1896 | |
| 1897 | darken = (1 - Sa) * Dc + min(Sc, Dc) |
| 1898 | lighten = (1 - Sa) * Dc + max(Sc, Dc) |
| 1899 | |
| 1900 | if (Sa == 0) these become |
| 1901 | darken = Dc + min(0, Dc) = 0 |
| 1902 | lighten = Dc + max(0, Dc) = Dc |
| 1903 | |
| 1904 | if (Sa == 1) these become |
| 1905 | darken = min(Sc, Dc) |
| 1906 | lighten = max(Sc, Dc) |
| 1907 | */ |
| 1908 | |
| 1909 | static uint16_t darken_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1910 | SkASSERT(require_0(src)); |
| 1911 | return 0; |
| 1912 | } |
| 1913 | |
| 1914 | static uint16_t darken_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1915 | SkASSERT(require_255(src)); |
| 1916 | unsigned r = SkFastMin32(SkPacked32ToR16(src), SkGetPackedR16(dst)); |
| 1917 | unsigned g = SkFastMin32(SkPacked32ToG16(src), SkGetPackedG16(dst)); |
| 1918 | unsigned b = SkFastMin32(SkPacked32ToB16(src), SkGetPackedB16(dst)); |
| 1919 | return SkPackRGB16(r, g, b); |
| 1920 | } |
| 1921 | |
| 1922 | static uint16_t lighten_modeproc16_0(SkPMColor src, uint16_t dst) { |
| 1923 | SkASSERT(require_0(src)); |
| 1924 | return dst; |
| 1925 | } |
| 1926 | |
| 1927 | static uint16_t lighten_modeproc16_255(SkPMColor src, uint16_t dst) { |
| 1928 | SkASSERT(require_255(src)); |
| 1929 | unsigned r = SkMax32(SkPacked32ToR16(src), SkGetPackedR16(dst)); |
| 1930 | unsigned g = SkMax32(SkPacked32ToG16(src), SkGetPackedG16(dst)); |
| 1931 | unsigned b = SkMax32(SkPacked32ToB16(src), SkGetPackedB16(dst)); |
| 1932 | return SkPackRGB16(r, g, b); |
| 1933 | } |
| 1934 | |
| 1935 | struct Proc16Rec { |
| 1936 | SkXfermodeProc16 fProc16_0; |
| 1937 | SkXfermodeProc16 fProc16_255; |
| 1938 | SkXfermodeProc16 fProc16_General; |
| 1939 | }; |
| 1940 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1941 | static const Proc16Rec gModeProcs16[] = { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1942 | { NULL, NULL, NULL }, // CLEAR |
| 1943 | { NULL, src_modeproc16_255, NULL }, |
| 1944 | { dst_modeproc16, dst_modeproc16, dst_modeproc16 }, |
| 1945 | { srcover_modeproc16_0, srcover_modeproc16_255, NULL }, |
| 1946 | { dstover_modeproc16_0, dstover_modeproc16_255, NULL }, |
| 1947 | { NULL, srcin_modeproc16_255, NULL }, |
| 1948 | { NULL, dstin_modeproc16_255, NULL }, |
| 1949 | { NULL, NULL, NULL },// SRC_OUT |
| 1950 | { dstout_modeproc16_0, NULL, NULL }, |
| 1951 | { srcatop_modeproc16_0, srcatop_modeproc16_255, srcatop_modeproc16 }, |
| 1952 | { NULL, dstatop_modeproc16_255, NULL }, |
| 1953 | { NULL, NULL, NULL }, // XOR |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1954 | |
| 1955 | { NULL, NULL, NULL }, // plus |
reed@google.com | 8d3cd7a | 2013-01-30 21:36:11 +0000 | [diff] [blame] | 1956 | { NULL, NULL, NULL }, // modulate |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1957 | { NULL, NULL, NULL }, // screen |
| 1958 | { NULL, NULL, NULL }, // overlay |
| 1959 | { darken_modeproc16_0, darken_modeproc16_255, NULL }, // darken |
| 1960 | { lighten_modeproc16_0, lighten_modeproc16_255, NULL }, // lighten |
| 1961 | { NULL, NULL, NULL }, // colordodge |
| 1962 | { NULL, NULL, NULL }, // colorburn |
| 1963 | { NULL, NULL, NULL }, // hardlight |
| 1964 | { NULL, NULL, NULL }, // softlight |
| 1965 | { NULL, NULL, NULL }, // difference |
| 1966 | { NULL, NULL, NULL }, // exclusion |
commit-bot@chromium.org | b24f893 | 2013-03-05 16:23:59 +0000 | [diff] [blame] | 1967 | { NULL, NULL, NULL }, // multiply |
| 1968 | { NULL, NULL, NULL }, // hue |
| 1969 | { NULL, NULL, NULL }, // saturation |
| 1970 | { NULL, NULL, NULL }, // color |
| 1971 | { NULL, NULL, NULL }, // luminosity |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1972 | }; |
| 1973 | |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1974 | SkXfermodeProc16 SkXfermode::GetProc16(Mode mode, SkColor srcColor) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1975 | SkXfermodeProc16 proc16 = NULL; |
reed@android.com | a0f5d15 | 2009-06-22 17:38:10 +0000 | [diff] [blame] | 1976 | if ((unsigned)mode < kModeCount) { |
| 1977 | const Proc16Rec& rec = gModeProcs16[mode]; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1978 | unsigned a = SkColorGetA(srcColor); |
| 1979 | |
| 1980 | if (0 == a) { |
| 1981 | proc16 = rec.fProc16_0; |
| 1982 | } else if (255 == a) { |
| 1983 | proc16 = rec.fProc16_255; |
| 1984 | } else { |
| 1985 | proc16 = rec.fProc16_General; |
| 1986 | } |
| 1987 | } |
| 1988 | return proc16; |
| 1989 | } |
| 1990 | |
caryclark@google.com | d26147a | 2011-12-15 14:16:43 +0000 | [diff] [blame] | 1991 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkXfermode) |
| 1992 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkProcCoeffXfermode) |
| 1993 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkClearXfermode) |
| 1994 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSrcXfermode) |
| 1995 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDstInXfermode) |
| 1996 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDstOutXfermode) |
commit-bot@chromium.org | cd7992b | 2013-10-17 16:29:34 +0000 | [diff] [blame] | 1997 | #if !SK_ARM_NEON_IS_NONE |
| 1998 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkNEONProcCoeffXfermode) |
| 1999 | #endif |
commit-bot@chromium.org | e424c1d | 2014-04-11 12:52:44 +0000 | [diff] [blame^] | 2000 | #if defined(SK_CPU_X86) && !defined(SK_BUILD_FOR_IOS) |
commit-bot@chromium.org | c524e98 | 2014-04-09 15:43:46 +0000 | [diff] [blame] | 2001 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSSE2ProcCoeffXfermode) |
commit-bot@chromium.org | 4460e75 | 2014-04-09 16:50:55 +0000 | [diff] [blame] | 2002 | #endif |
caryclark@google.com | d26147a | 2011-12-15 14:16:43 +0000 | [diff] [blame] | 2003 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |