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| 1 /* | |
| 2 * Copyright 2006 The Android Open Source Project | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #include "SkAvoidXfermode.h" | |
| 9 #include "SkColorPriv.h" | |
| 10 #include "SkReadBuffer.h" | |
| 11 #include "SkWriteBuffer.h" | |
| 12 #include "SkString.h" | |
| 13 | |
| 14 SkAvoidXfermode::SkAvoidXfermode(SkColor opColor, U8CPU tolerance, Mode mode) { | |
| 15 if (tolerance > 255) { | |
| 16 tolerance = 255; | |
| 17 } | |
| 18 fTolerance = SkToU8(tolerance); | |
| 19 fOpColor = opColor; | |
| 20 fDistMul = (256 << 14) / (tolerance + 1); | |
| 21 fMode = mode; | |
| 22 } | |
| 23 | |
| 24 sk_sp<SkFlattenable> SkAvoidXfermode::CreateProc(SkReadBuffer& buffer) { | |
| 25 const SkColor color = buffer.readColor(); | |
| 26 const unsigned tolerance = buffer.readUInt(); | |
| 27 const unsigned mode = buffer.readUInt(); | |
| 28 return Make(color, tolerance, (Mode)mode); | |
| 29 } | |
| 30 | |
| 31 void SkAvoidXfermode::flatten(SkWriteBuffer& buffer) const { | |
| 32 buffer.writeColor(fOpColor); | |
| 33 buffer.writeUInt(fTolerance); | |
| 34 buffer.writeUInt(fMode); | |
| 35 } | |
| 36 | |
| 37 // returns 0..31 | |
| 38 static unsigned color_dist16(uint16_t c, unsigned r, unsigned g, unsigned b) { | |
| 39 SkASSERT(r <= SK_R16_MASK); | |
| 40 SkASSERT(g <= SK_G16_MASK); | |
| 41 SkASSERT(b <= SK_B16_MASK); | |
| 42 | |
| 43 unsigned dr = SkAbs32(SkGetPackedR16(c) - r); | |
| 44 unsigned dg = SkAbs32(SkGetPackedG16(c) - g) >> (SK_G16_BITS - SK_R16_BITS); | |
| 45 unsigned db = SkAbs32(SkGetPackedB16(c) - b); | |
| 46 | |
| 47 return SkMax32(dr, SkMax32(dg, db)); | |
| 48 } | |
| 49 | |
| 50 // returns 0..255 | |
| 51 static unsigned color_dist32(SkPMColor c, U8CPU r, U8CPU g, U8CPU b) { | |
| 52 SkASSERT(r <= 0xFF); | |
| 53 SkASSERT(g <= 0xFF); | |
| 54 SkASSERT(b <= 0xFF); | |
| 55 | |
| 56 unsigned dr = SkAbs32(SkGetPackedR32(c) - r); | |
| 57 unsigned dg = SkAbs32(SkGetPackedG32(c) - g); | |
| 58 unsigned db = SkAbs32(SkGetPackedB32(c) - b); | |
| 59 | |
| 60 return SkMax32(dr, SkMax32(dg, db)); | |
| 61 } | |
| 62 | |
| 63 static int scale_dist_14(int dist, uint32_t mul, uint32_t sub) { | |
| 64 int tmp = dist * mul - sub; | |
| 65 int result = (tmp + (1 << 13)) >> 14; | |
| 66 | |
| 67 return result; | |
| 68 } | |
| 69 | |
| 70 static inline unsigned Accurate255To256(unsigned x) { | |
| 71 return x + (x >> 7); | |
| 72 } | |
| 73 | |
| 74 void SkAvoidXfermode::xfer32(SkPMColor dst[], const SkPMColor src[], int count, | |
| 75 const SkAlpha aa[]) const { | |
| 76 unsigned opR = SkColorGetR(fOpColor); | |
| 77 unsigned opG = SkColorGetG(fOpColor); | |
| 78 unsigned opB = SkColorGetB(fOpColor); | |
| 79 uint32_t mul = fDistMul; | |
| 80 uint32_t sub = (fDistMul - (1 << 14)) << 8; | |
| 81 | |
| 82 int MAX, mask; | |
| 83 | |
| 84 if (kTargetColor_Mode == fMode) { | |
| 85 mask = -1; | |
| 86 MAX = 255; | |
| 87 } else { | |
| 88 mask = 0; | |
| 89 MAX = 0; | |
| 90 } | |
| 91 | |
| 92 for (int i = 0; i < count; i++) { | |
| 93 int d = color_dist32(dst[i], opR, opG, opB); | |
| 94 // now reverse d if we need to | |
| 95 d = MAX + (d ^ mask) - mask; | |
| 96 SkASSERT((unsigned)d <= 255); | |
| 97 d = Accurate255To256(d); | |
| 98 | |
| 99 d = scale_dist_14(d, mul, sub); | |
| 100 SkASSERT(d <= 256); | |
| 101 | |
| 102 if (d > 0) { | |
| 103 if (aa) { | |
| 104 d = SkAlphaMul(d, Accurate255To256(*aa++)); | |
| 105 if (0 == d) { | |
| 106 continue; | |
| 107 } | |
| 108 } | |
| 109 dst[i] = SkFourByteInterp256(src[i], dst[i], d); | |
| 110 } | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 static inline U16CPU SkBlend3216(SkPMColor src, U16CPU dst, unsigned scale) { | |
| 115 SkASSERT(scale <= 32); | |
| 116 scale <<= 3; | |
| 117 | |
| 118 return SkPackRGB16(SkAlphaBlend(SkPacked32ToR16(src), SkGetPackedR16(dst), s
cale), | |
| 119 SkAlphaBlend(SkPacked32ToG16(src), SkGetPackedG16(dst), scale), | |
| 120 SkAlphaBlend(SkPacked32ToB16(src), SkGetPackedB16(dst), scale)); | |
| 121 } | |
| 122 | |
| 123 void SkAvoidXfermode::xfer16(uint16_t dst[], const SkPMColor src[], int count, | |
| 124 const SkAlpha aa[]) const { | |
| 125 unsigned opR = SkColorGetR(fOpColor) >> (8 - SK_R16_BITS); | |
| 126 unsigned opG = SkColorGetG(fOpColor) >> (8 - SK_G16_BITS); | |
| 127 unsigned opB = SkColorGetB(fOpColor) >> (8 - SK_R16_BITS); | |
| 128 uint32_t mul = fDistMul; | |
| 129 uint32_t sub = (fDistMul - (1 << 14)) << SK_R16_BITS; | |
| 130 | |
| 131 int MAX, mask; | |
| 132 | |
| 133 if (kTargetColor_Mode == fMode) { | |
| 134 mask = -1; | |
| 135 MAX = 31; | |
| 136 } else { | |
| 137 mask = 0; | |
| 138 MAX = 0; | |
| 139 } | |
| 140 | |
| 141 for (int i = 0; i < count; i++) { | |
| 142 int d = color_dist16(dst[i], opR, opG, opB); | |
| 143 // now reverse d if we need to | |
| 144 d = MAX + (d ^ mask) - mask; | |
| 145 SkASSERT((unsigned)d <= 31); | |
| 146 // convert from 0..31 to 0..32 | |
| 147 d += d >> 4; | |
| 148 d = scale_dist_14(d, mul, sub); | |
| 149 SkASSERT(d <= 32); | |
| 150 | |
| 151 if (d > 0) { | |
| 152 if (aa) { | |
| 153 d = SkAlphaMul(d, Accurate255To256(*aa++)); | |
| 154 if (0 == d) { | |
| 155 continue; | |
| 156 } | |
| 157 } | |
| 158 dst[i] = SkBlend3216(src[i], dst[i], d); | |
| 159 } | |
| 160 } | |
| 161 } | |
| 162 | |
| 163 void SkAvoidXfermode::xferA8(SkAlpha dst[], const SkPMColor src[], int count, | |
| 164 const SkAlpha aa[]) const { | |
| 165 } | |
| 166 | |
| 167 | |
| 168 #if SK_SUPPORT_GPU | |
| 169 | |
| 170 #include "GrFragmentProcessor.h" | |
| 171 #include "GrInvariantOutput.h" | |
| 172 #include "GrXferProcessor.h" | |
| 173 #include "glsl/GrGLSLFragmentProcessor.h" | |
| 174 #include "glsl/GrGLSLFragmentShaderBuilder.h" | |
| 175 #include "glsl/GrGLSLUniformHandler.h" | |
| 176 #include "glsl/GrGLSLXferProcessor.h" | |
| 177 | |
| 178 /////////////////////////////////////////////////////////////////////////////// | |
| 179 // Fragment Processor | |
| 180 /////////////////////////////////////////////////////////////////////////////// | |
| 181 | |
| 182 class GLAvoidFP; | |
| 183 | |
| 184 class AvoidFP : public GrFragmentProcessor { | |
| 185 public: | |
| 186 static const GrFragmentProcessor* Create(SkColor opColor, uint8_t tolerance, | |
| 187 SkAvoidXfermode::Mode mode, | |
| 188 const GrFragmentProcessor* dst) { | |
| 189 return new AvoidFP(opColor, tolerance, mode, dst); | |
| 190 } | |
| 191 | |
| 192 ~AvoidFP() override { } | |
| 193 | |
| 194 const char* name() const override { return "Avoid"; } | |
| 195 | |
| 196 SkString dumpInfo() const override { | |
| 197 SkString str; | |
| 198 str.appendf("Color: 0x%08x Tol: %d Mode: %s", | |
| 199 fOpColor, fTolerance, | |
| 200 fMode == SkAvoidXfermode::kAvoidColor_Mode ? "Avoid" : "Targ
et"); | |
| 201 return str; | |
| 202 } | |
| 203 | |
| 204 SkColor opColor() const { return fOpColor; } | |
| 205 uint8_t tol() const { return fTolerance; } | |
| 206 SkAvoidXfermode::Mode mode() const { return fMode; } | |
| 207 | |
| 208 private: | |
| 209 GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; | |
| 210 | |
| 211 void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const
override; | |
| 212 | |
| 213 bool onIsEqual(const GrFragmentProcessor& fpBase) const override { | |
| 214 const AvoidFP& fp = fpBase.cast<AvoidFP>(); | |
| 215 | |
| 216 return fOpColor == fp.fOpColor && | |
| 217 fTolerance == fp.fTolerance && | |
| 218 fMode == fp.fMode; | |
| 219 } | |
| 220 | |
| 221 void onComputeInvariantOutput(GrInvariantOutput* inout) const override { | |
| 222 inout->setToUnknown(GrInvariantOutput::kWill_ReadInput); | |
| 223 } | |
| 224 | |
| 225 AvoidFP(SkColor opColor, uint8_t tolerance, | |
| 226 SkAvoidXfermode::Mode mode, const GrFragmentProcessor* dst) | |
| 227 : fOpColor(opColor), fTolerance(tolerance), fMode(mode) { | |
| 228 this->initClassID<AvoidFP>(); | |
| 229 | |
| 230 SkASSERT(dst); | |
| 231 SkDEBUGCODE(int dstIndex = )this->registerChildProcessor(dst); | |
| 232 SkASSERT(0 == dstIndex); | |
| 233 } | |
| 234 | |
| 235 SkColor fOpColor; | |
| 236 uint8_t fTolerance; | |
| 237 SkAvoidXfermode::Mode fMode; | |
| 238 | |
| 239 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | |
| 240 typedef GrFragmentProcessor INHERITED; | |
| 241 }; | |
| 242 | |
| 243 /////////////////////////////////////////////////////////////////////////////// | |
| 244 | |
| 245 // Add common code for calculating avoid's distance value | |
| 246 static void add_avoid_code(GrGLSLFragmentBuilder* fragBuilder, | |
| 247 const char* dstColor, | |
| 248 const char* srcCoverage, | |
| 249 const char* kColorAndTolUni, | |
| 250 const char* kCoverageName, | |
| 251 SkAvoidXfermode::Mode mode) { | |
| 252 | |
| 253 fragBuilder->codeAppendf("vec3 temp = %s.rgb - %s.rgb;", dstColor, kColorAnd
TolUni); | |
| 254 fragBuilder->codeAppendf("float dist = max(max(abs(temp.r), abs(temp.g)), ab
s(temp.b));"); | |
| 255 | |
| 256 if (SkAvoidXfermode::kTargetColor_Mode == mode) { | |
| 257 fragBuilder->codeAppendf("dist = 1.0 - dist;"); | |
| 258 } | |
| 259 | |
| 260 // the 'a' portion of the uniform is the scaled and inverted tolerance | |
| 261 fragBuilder->codeAppendf("dist = dist * %s.a - (%s.a - 1.0);", | |
| 262 kColorAndTolUni, kColorAndTolUni); | |
| 263 | |
| 264 fragBuilder->codeAppendf("vec4 %s = vec4(dist);", kCoverageName); | |
| 265 if (srcCoverage) { | |
| 266 fragBuilder->codeAppendf("%s *= %s;", kCoverageName, srcCoverage); | |
| 267 } | |
| 268 } | |
| 269 | |
| 270 class GLAvoidFP : public GrGLSLFragmentProcessor { | |
| 271 public: | |
| 272 void emitCode(EmitArgs& args) override { | |
| 273 const AvoidFP& avoid = args.fFp.cast<AvoidFP>(); | |
| 274 | |
| 275 GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; | |
| 276 SkString dstColor("dstColor"); | |
| 277 this->emitChild(0, nullptr, &dstColor, args); | |
| 278 | |
| 279 fColorAndTolUni = args.fUniformHandler->addUniform( | |
| 280 kFragment_GrShaderFlag, | |
| 281 kVec4f_GrSLType, kDefault_GrSLP
recision, | |
| 282 "colorAndTol"); | |
| 283 const char* kColorAndTolUni = args.fUniformHandler->getUniformCStr(fColo
rAndTolUni); | |
| 284 | |
| 285 const char* kCoverageName = "newCoverage"; | |
| 286 | |
| 287 // add_avoid_code emits the code needed to compute the new coverage | |
| 288 add_avoid_code(fragBuilder, | |
| 289 dstColor.c_str(), nullptr, | |
| 290 kColorAndTolUni, kCoverageName, avoid.mode()); | |
| 291 | |
| 292 // The raster implementation's quantization and behavior yield a very no
ticeable | |
| 293 // effect near zero (0.0039 = 1/256). | |
| 294 fragBuilder->codeAppendf("if (%s.r < 0.0039) { %s = %s; } else {", | |
| 295 kCoverageName, args.fOutputColor, dstColor.c_st
r()); | |
| 296 fragBuilder->codeAppendf("%s = %s * %s + (vec4(1.0)-%s) * %s;", | |
| 297 args.fOutputColor, | |
| 298 kCoverageName, args.fInputColor ? args.fInputCo
lor : "vec4(1.0)", | |
| 299 kCoverageName, dstColor.c_str()); | |
| 300 fragBuilder->codeAppend("}"); | |
| 301 } | |
| 302 | |
| 303 static void GenKey(const GrProcessor& proc, const GrGLSLCaps&, GrProcessorKe
yBuilder* b) { | |
| 304 const AvoidFP& avoid = proc.cast<AvoidFP>(); | |
| 305 uint32_t key = avoid.mode() == SkAvoidXfermode::kTargetColor_Mode ? 1 :
0; | |
| 306 b->add32(key); | |
| 307 } | |
| 308 | |
| 309 protected: | |
| 310 void onSetData(const GrGLSLProgramDataManager& pdman, const GrProcessor& pro
c) override { | |
| 311 const AvoidFP& avoid = proc.cast<AvoidFP>(); | |
| 312 pdman.set4f(fColorAndTolUni, | |
| 313 SkColorGetR(avoid.opColor())/255.0f, | |
| 314 SkColorGetG(avoid.opColor())/255.0f, | |
| 315 SkColorGetB(avoid.opColor())/255.0f, | |
| 316 256.0f/(avoid.tol()+1.0f)); | |
| 317 } | |
| 318 | |
| 319 private: | |
| 320 GrGLSLProgramDataManager::UniformHandle fColorAndTolUni; | |
| 321 | |
| 322 typedef GrGLSLFragmentProcessor INHERITED; | |
| 323 }; | |
| 324 | |
| 325 /////////////////////////////////////////////////////////////////////////////// | |
| 326 | |
| 327 GrGLSLFragmentProcessor* AvoidFP::onCreateGLSLInstance() const { | |
| 328 return new GLAvoidFP; | |
| 329 } | |
| 330 | |
| 331 void AvoidFP::onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilde
r* b) const { | |
| 332 GLAvoidFP::GenKey(*this, caps, b); | |
| 333 } | |
| 334 | |
| 335 const GrFragmentProcessor* AvoidFP::TestCreate(GrProcessorTestData* d) { | |
| 336 SkColor opColor = d->fRandom->nextU(); | |
| 337 uint8_t tolerance = d->fRandom->nextBits(8); | |
| 338 SkAvoidXfermode::Mode mode = d->fRandom->nextBool() ? SkAvoidXfermode::kAvoi
dColor_Mode | |
| 339 : SkAvoidXfermode::kTarg
etColor_Mode; | |
| 340 | |
| 341 SkAutoTUnref<const GrFragmentProcessor> dst(GrProcessorUnitTest::CreateChild
FP(d)); | |
| 342 return new AvoidFP(opColor, tolerance, mode, dst); | |
| 343 } | |
| 344 | |
| 345 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(AvoidFP); | |
| 346 | |
| 347 /////////////////////////////////////////////////////////////////////////////// | |
| 348 // Xfer Processor | |
| 349 /////////////////////////////////////////////////////////////////////////////// | |
| 350 | |
| 351 class AvoidXP : public GrXferProcessor { | |
| 352 public: | |
| 353 AvoidXP(const DstTexture* dstTexture, bool hasMixedSamples, | |
| 354 SkColor opColor, uint8_t tolerance, SkAvoidXfermode::Mode mode) | |
| 355 : INHERITED(dstTexture, true, hasMixedSamples) | |
| 356 , fOpColor(opColor) | |
| 357 , fTolerance(tolerance) | |
| 358 , fMode(mode) { | |
| 359 this->initClassID<AvoidXP>(); | |
| 360 } | |
| 361 | |
| 362 const char* name() const override { return "Avoid"; } | |
| 363 | |
| 364 GrGLSLXferProcessor* createGLSLInstance() const override; | |
| 365 | |
| 366 SkColor opColor() const { return fOpColor; } | |
| 367 uint8_t tol() const { return fTolerance; } | |
| 368 SkAvoidXfermode::Mode mode() const { return fMode; } | |
| 369 | |
| 370 private: | |
| 371 GrXferProcessor::OptFlags onGetOptimizations(const GrPipelineOptimizations&
optimizations, | |
| 372 bool doesStencilWrite, | |
| 373 GrColor* overrideColor, | |
| 374 const GrCaps& caps) const overr
ide { | |
| 375 return GrXferProcessor::kNone_OptFlags; | |
| 376 } | |
| 377 | |
| 378 void onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b)
const override; | |
| 379 | |
| 380 bool onIsEqual(const GrXferProcessor& xpBase) const override { | |
| 381 const AvoidXP& xp = xpBase.cast<AvoidXP>(); | |
| 382 | |
| 383 return fOpColor == xp.fOpColor && | |
| 384 fTolerance == xp.fTolerance && | |
| 385 fMode == xp.fMode; | |
| 386 } | |
| 387 | |
| 388 SkColor fOpColor; | |
| 389 uint8_t fTolerance; | |
| 390 SkAvoidXfermode::Mode fMode; | |
| 391 | |
| 392 typedef GrXferProcessor INHERITED; | |
| 393 }; | |
| 394 | |
| 395 /////////////////////////////////////////////////////////////////////////////// | |
| 396 | |
| 397 class GLAvoidXP : public GrGLSLXferProcessor { | |
| 398 public: | |
| 399 static void GenKey(const GrProcessor& processor, const GrGLSLCaps&, GrProces
sorKeyBuilder* b) { | |
| 400 const AvoidXP& avoid = processor.cast<AvoidXP>(); | |
| 401 uint32_t key = SkAvoidXfermode::kTargetColor_Mode == avoid.mode() ? 1 :
0; | |
| 402 b->add32(key); | |
| 403 } | |
| 404 | |
| 405 private: | |
| 406 void emitBlendCodeForDstRead(GrGLSLXPFragmentBuilder* fragBuilder, | |
| 407 GrGLSLUniformHandler* uniformHandler, | |
| 408 const char* srcColor, | |
| 409 const char* srcCoverage, | |
| 410 const char* dstColor, | |
| 411 const char* outColor, | |
| 412 const char* outColorSecondary, | |
| 413 const GrXferProcessor& proc) override { | |
| 414 const AvoidXP& avoid = proc.cast<AvoidXP>(); | |
| 415 | |
| 416 fColorAndTolUni = uniformHandler->addUniform(kFragment_GrShaderFlag, | |
| 417 kVec4f_GrSLType, kDefault_G
rSLPrecision, | |
| 418 "colorAndTol"); | |
| 419 const char* kColorandTolUni = uniformHandler->getUniformCStr(fColorAndTo
lUni); | |
| 420 | |
| 421 const char* kCoverageName = "newCoverage"; | |
| 422 | |
| 423 // add_avoid_code emits the code needed to compute the new coverage | |
| 424 add_avoid_code(fragBuilder, | |
| 425 dstColor, srcCoverage, | |
| 426 kColorandTolUni, kCoverageName, avoid.mode()); | |
| 427 | |
| 428 // The raster implementation's quantization and behavior yield a very no
ticeable | |
| 429 // effect near zero (0.0039 = 1/256). | |
| 430 fragBuilder->codeAppendf("if (%s.r < 0.0039) { %s = %s; } else {", | |
| 431 kCoverageName, outColor, dstColor); | |
| 432 fragBuilder->codeAppendf("%s = %s;", outColor, srcColor ? srcColor : "ve
c4(1.0)"); | |
| 433 INHERITED::DefaultCoverageModulation(fragBuilder, kCoverageName, dstColo
r, outColor, | |
| 434 outColorSecondary, proc); | |
| 435 fragBuilder->codeAppend("}"); | |
| 436 } | |
| 437 | |
| 438 void onSetData(const GrGLSLProgramDataManager& pdman, | |
| 439 const GrXferProcessor& processor) override { | |
| 440 const AvoidXP& avoid = processor.cast<AvoidXP>(); | |
| 441 pdman.set4f(fColorAndTolUni, | |
| 442 SkColorGetR(avoid.opColor())/255.0f, | |
| 443 SkColorGetG(avoid.opColor())/255.0f, | |
| 444 SkColorGetB(avoid.opColor())/255.0f, | |
| 445 256.0f/(avoid.tol()+1.0f)); | |
| 446 }; | |
| 447 | |
| 448 GrGLSLProgramDataManager::UniformHandle fColorAndTolUni; | |
| 449 | |
| 450 typedef GrGLSLXferProcessor INHERITED; | |
| 451 }; | |
| 452 | |
| 453 /////////////////////////////////////////////////////////////////////////////// | |
| 454 | |
| 455 void AvoidXP::onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilde
r* b) const { | |
| 456 GLAvoidXP::GenKey(*this, caps, b); | |
| 457 } | |
| 458 | |
| 459 GrGLSLXferProcessor* AvoidXP::createGLSLInstance() const { return new GLAvoidXP;
} | |
| 460 | |
| 461 /////////////////////////////////////////////////////////////////////////////// | |
| 462 class GrAvoidXPFactory : public GrXPFactory { | |
| 463 public: | |
| 464 static GrXPFactory* Create(SkColor opColor, uint8_t tolerance, | |
| 465 SkAvoidXfermode::Mode mode) { | |
| 466 return new GrAvoidXPFactory(opColor, tolerance, mode); | |
| 467 } | |
| 468 | |
| 469 void getInvariantBlendedColor(const GrProcOptInfo& colorPOI, | |
| 470 GrXPFactory::InvariantBlendedColor* blendedCol
or) const override { | |
| 471 blendedColor->fWillBlendWithDst = true; | |
| 472 blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags; | |
| 473 } | |
| 474 | |
| 475 private: | |
| 476 GrAvoidXPFactory(SkColor opColor, uint8_t tolerance, SkAvoidXfermode::Mode m
ode) | |
| 477 : fOpColor(opColor) | |
| 478 , fTolerance(tolerance) | |
| 479 , fMode(mode) { | |
| 480 this->initClassID<GrAvoidXPFactory>(); | |
| 481 } | |
| 482 | |
| 483 GrXferProcessor* onCreateXferProcessor(const GrCaps& caps, | |
| 484 const GrPipelineOptimizations& optimi
zations, | |
| 485 bool hasMixedSamples, | |
| 486 const DstTexture* dstTexture) const o
verride { | |
| 487 return new AvoidXP(dstTexture, hasMixedSamples, fOpColor, fTolerance, fM
ode); | |
| 488 } | |
| 489 | |
| 490 bool onWillReadDstColor(const GrCaps& caps, | |
| 491 const GrPipelineOptimizations& optimizations, | |
| 492 bool hasMixedSamples) const override { | |
| 493 return true; | |
| 494 } | |
| 495 | |
| 496 bool onIsEqual(const GrXPFactory& xpfBase) const override { | |
| 497 const GrAvoidXPFactory& xpf = xpfBase.cast<GrAvoidXPFactory>(); | |
| 498 return fOpColor == xpf.fOpColor && | |
| 499 fTolerance == xpf.fTolerance && | |
| 500 fMode == xpf.fMode; | |
| 501 } | |
| 502 | |
| 503 GR_DECLARE_XP_FACTORY_TEST; | |
| 504 | |
| 505 SkColor fOpColor; | |
| 506 uint8_t fTolerance; | |
| 507 SkAvoidXfermode::Mode fMode; | |
| 508 | |
| 509 typedef GrXPFactory INHERITED; | |
| 510 }; | |
| 511 | |
| 512 GR_DEFINE_XP_FACTORY_TEST(GrAvoidXPFactory); | |
| 513 | |
| 514 const GrXPFactory* GrAvoidXPFactory::TestCreate(GrProcessorTestData* d) { | |
| 515 SkColor opColor = d->fRandom->nextU(); | |
| 516 uint8_t tolerance = d->fRandom->nextBits(8); | |
| 517 SkAvoidXfermode::Mode mode = d->fRandom->nextBool() ? SkAvoidXfermode::kAvoi
dColor_Mode | |
| 518 : SkAvoidXfermode::kTarg
etColor_Mode; | |
| 519 return GrAvoidXPFactory::Create(opColor, tolerance, mode); | |
| 520 } | |
| 521 | |
| 522 /////////////////////////////////////////////////////////////////////////////// | |
| 523 | |
| 524 const GrFragmentProcessor* SkAvoidXfermode::getFragmentProcessorForImageFilter( | |
| 525 const GrFragmentProc
essor* dst) const { | |
| 526 return AvoidFP::Create(fOpColor, fTolerance, fMode, dst); | |
| 527 } | |
| 528 | |
| 529 GrXPFactory* SkAvoidXfermode::asXPFactory() const { | |
| 530 return GrAvoidXPFactory::Create(fOpColor, fTolerance, fMode); | |
| 531 } | |
| 532 #endif | |
| 533 | |
| 534 #ifndef SK_IGNORE_TO_STRING | |
| 535 void SkAvoidXfermode::toString(SkString* str) const { | |
| 536 str->append("AvoidXfermode: opColor: "); | |
| 537 str->appendHex(fOpColor); | |
| 538 str->appendf("tolerance: %d ", fTolerance); | |
| 539 | |
| 540 static const char* gModeStrings[] = { "Avoid", "Target" }; | |
| 541 | |
| 542 str->appendf("mode: %s", gModeStrings[fMode]); | |
| 543 } | |
| 544 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1853103005:
remove avoid and pixelxor xfermodes (Closed)
Base URL: https://skia.googlesource.com/skia.git@master