SkTableColorFilter.cpp revision 587e08f361ee3e775a6bbc6dca761dbba82e422c
1/* 2* Copyright 2015 Google Inc. 3* 4* Use of this source code is governed by a BSD-style license that can be 5* found in the LICENSE file. 6*/ 7 8#include "SkTableColorFilter.h" 9 10#include "SkArenaAlloc.h" 11#include "SkBitmap.h" 12#include "SkColorPriv.h" 13#include "SkRasterPipeline.h" 14#include "SkReadBuffer.h" 15#include "SkString.h" 16#include "SkUnPreMultiply.h" 17#include "SkWriteBuffer.h" 18 19static const uint8_t gIdentityTable[] = { 20 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 21 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 22 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 23 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 24 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 25 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 26 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 27 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 28 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 29 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 30 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 31 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 32 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 33 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 34 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 35 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, 36 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 37 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 38 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 39 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 40 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 41 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 42 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 43 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 44 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 45 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 46 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 47 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 48 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 49 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 50 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 51 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF 52}; 53 54class SkTable_ColorFilter : public SkColorFilter { 55public: 56 SkTable_ColorFilter(const uint8_t tableA[], const uint8_t tableR[], 57 const uint8_t tableG[], const uint8_t tableB[]) { 58 fBitmap = nullptr; 59 fFlags = 0; 60 61 uint8_t* dst = fStorage; 62 if (tableA) { 63 memcpy(dst, tableA, 256); 64 dst += 256; 65 fFlags |= kA_Flag; 66 } 67 if (tableR) { 68 memcpy(dst, tableR, 256); 69 dst += 256; 70 fFlags |= kR_Flag; 71 } 72 if (tableG) { 73 memcpy(dst, tableG, 256); 74 dst += 256; 75 fFlags |= kG_Flag; 76 } 77 if (tableB) { 78 memcpy(dst, tableB, 256); 79 fFlags |= kB_Flag; 80 } 81 } 82 83 virtual ~SkTable_ColorFilter() { delete fBitmap; } 84 85 bool asComponentTable(SkBitmap* table) const override; 86 sk_sp<SkColorFilter> makeComposed(sk_sp<SkColorFilter> inner) const override; 87 88#if SK_SUPPORT_GPU 89 sk_sp<GrFragmentProcessor> asFragmentProcessor(GrContext*, SkColorSpace*) const override; 90#endif 91 92 void filterSpan(const SkPMColor src[], int count, SkPMColor dst[]) const override; 93 94 SK_TO_STRING_OVERRIDE() 95 96 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTable_ColorFilter) 97 98 enum { 99 kA_Flag = 1 << 0, 100 kR_Flag = 1 << 1, 101 kG_Flag = 1 << 2, 102 kB_Flag = 1 << 3, 103 }; 104 105 bool onAppendStages(SkRasterPipeline* p, SkColorSpace*, SkArenaAlloc* alloc, 106 bool shaderIsOpaque) const override { 107 const uint8_t *r = gIdentityTable, 108 *g = gIdentityTable, 109 *b = gIdentityTable, 110 *a = gIdentityTable; 111 const uint8_t* ptr = fStorage; 112 if (fFlags & kA_Flag) { a = ptr; ptr += 256; } 113 if (fFlags & kR_Flag) { r = ptr; ptr += 256; } 114 if (fFlags & kG_Flag) { g = ptr; ptr += 256; } 115 if (fFlags & kB_Flag) { b = ptr; } 116 117 if (!shaderIsOpaque) { 118 p->append(SkRasterPipeline::unpremul); 119 } 120 121 struct Tables { const uint8_t *r, *g, *b, *a; }; 122 p->append(SkRasterPipeline::byte_tables, alloc->make<Tables>(Tables{r,g,b,a})); 123 124 bool definitelyOpaque = shaderIsOpaque && a[0xff] == 0xff; 125 if (!definitelyOpaque) { 126 p->append(SkRasterPipeline::premul); 127 } 128 return true; 129 } 130 131protected: 132 void flatten(SkWriteBuffer&) const override; 133 134private: 135 mutable const SkBitmap* fBitmap; // lazily allocated 136 137 uint8_t fStorage[256 * 4]; 138 unsigned fFlags; 139 140 friend class SkTableColorFilter; 141 142 typedef SkColorFilter INHERITED; 143}; 144 145void SkTable_ColorFilter::filterSpan(const SkPMColor src[], int count, SkPMColor dst[]) const { 146 const uint8_t* table = fStorage; 147 const uint8_t* tableA = gIdentityTable; 148 const uint8_t* tableR = gIdentityTable; 149 const uint8_t* tableG = gIdentityTable; 150 const uint8_t* tableB = gIdentityTable; 151 if (fFlags & kA_Flag) { 152 tableA = table; table += 256; 153 } 154 if (fFlags & kR_Flag) { 155 tableR = table; table += 256; 156 } 157 if (fFlags & kG_Flag) { 158 tableG = table; table += 256; 159 } 160 if (fFlags & kB_Flag) { 161 tableB = table; 162 } 163 164 const SkUnPreMultiply::Scale* scaleTable = SkUnPreMultiply::GetScaleTable(); 165 for (int i = 0; i < count; ++i) { 166 SkPMColor c = src[i]; 167 unsigned a, r, g, b; 168 if (0 == c) { 169 a = r = g = b = 0; 170 } else { 171 a = SkGetPackedA32(c); 172 r = SkGetPackedR32(c); 173 g = SkGetPackedG32(c); 174 b = SkGetPackedB32(c); 175 176 if (a < 255) { 177 SkUnPreMultiply::Scale scale = scaleTable[a]; 178 r = SkUnPreMultiply::ApplyScale(scale, r); 179 g = SkUnPreMultiply::ApplyScale(scale, g); 180 b = SkUnPreMultiply::ApplyScale(scale, b); 181 } 182 } 183 dst[i] = SkPremultiplyARGBInline(tableA[a], tableR[r], 184 tableG[g], tableB[b]); 185 } 186} 187 188#ifndef SK_IGNORE_TO_STRING 189void SkTable_ColorFilter::toString(SkString* str) const { 190 const uint8_t* table = fStorage; 191 const uint8_t* tableA = gIdentityTable; 192 const uint8_t* tableR = gIdentityTable; 193 const uint8_t* tableG = gIdentityTable; 194 const uint8_t* tableB = gIdentityTable; 195 if (fFlags & kA_Flag) { 196 tableA = table; table += 256; 197 } 198 if (fFlags & kR_Flag) { 199 tableR = table; table += 256; 200 } 201 if (fFlags & kG_Flag) { 202 tableG = table; table += 256; 203 } 204 if (fFlags & kB_Flag) { 205 tableB = table; 206 } 207 208 str->append("SkTable_ColorFilter ("); 209 210 for (int i = 0; i < 256; ++i) { 211 str->appendf("%d: %d,%d,%d,%d\n", 212 i, tableR[i], tableG[i], tableB[i], tableA[i]); 213 } 214 215 str->append(")"); 216} 217#endif 218 219static const uint8_t gCountNibBits[] = { 220 0, 1, 1, 2, 221 1, 2, 2, 3, 222 1, 2, 2, 3, 223 2, 3, 3, 4 224}; 225 226#include "SkPackBits.h" 227 228void SkTable_ColorFilter::flatten(SkWriteBuffer& buffer) const { 229 uint8_t storage[5*256]; 230 int count = gCountNibBits[fFlags & 0xF]; 231 size_t size = SkPackBits::Pack8(fStorage, count * 256, storage, 232 sizeof(storage)); 233 234 buffer.write32(fFlags); 235 buffer.writeByteArray(storage, size); 236} 237 238sk_sp<SkFlattenable> SkTable_ColorFilter::CreateProc(SkReadBuffer& buffer) { 239 const int flags = buffer.read32(); 240 const size_t count = gCountNibBits[flags & 0xF]; 241 SkASSERT(count <= 4); 242 243 uint8_t packedStorage[5*256]; 244 size_t packedSize = buffer.getArrayCount(); 245 if (!buffer.validate(packedSize <= sizeof(packedStorage))) { 246 return nullptr; 247 } 248 if (!buffer.readByteArray(packedStorage, packedSize)) { 249 return nullptr; 250 } 251 252 uint8_t unpackedStorage[4*256]; 253 size_t unpackedSize = SkPackBits::Unpack8(packedStorage, packedSize, 254 unpackedStorage, sizeof(unpackedStorage)); 255 // now check that we got the size we expected 256 if (!buffer.validate(unpackedSize == count*256)) { 257 return nullptr; 258 } 259 260 const uint8_t* a = nullptr; 261 const uint8_t* r = nullptr; 262 const uint8_t* g = nullptr; 263 const uint8_t* b = nullptr; 264 const uint8_t* ptr = unpackedStorage; 265 266 if (flags & kA_Flag) { 267 a = ptr; 268 ptr += 256; 269 } 270 if (flags & kR_Flag) { 271 r = ptr; 272 ptr += 256; 273 } 274 if (flags & kG_Flag) { 275 g = ptr; 276 ptr += 256; 277 } 278 if (flags & kB_Flag) { 279 b = ptr; 280 ptr += 256; 281 } 282 return SkTableColorFilter::MakeARGB(a, r, g, b); 283} 284 285bool SkTable_ColorFilter::asComponentTable(SkBitmap* table) const { 286 if (table) { 287 if (nullptr == fBitmap) { 288 SkBitmap* bmp = new SkBitmap; 289 bmp->allocPixels(SkImageInfo::MakeA8(256, 4)); 290 uint8_t* bitmapPixels = bmp->getAddr8(0, 0); 291 int offset = 0; 292 static const unsigned kFlags[] = { kA_Flag, kR_Flag, kG_Flag, kB_Flag }; 293 294 for (int x = 0; x < 4; ++x) { 295 if (!(fFlags & kFlags[x])) { 296 memcpy(bitmapPixels, gIdentityTable, sizeof(gIdentityTable)); 297 } else { 298 memcpy(bitmapPixels, fStorage + offset, 256); 299 offset += 256; 300 } 301 bitmapPixels += 256; 302 } 303 fBitmap = bmp; 304 } 305 *table = *fBitmap; 306 } 307 return true; 308} 309 310// Combines the two lookup tables so that making a lookup using res[] has 311// the same effect as making a lookup through inner[] then outer[]. 312static void combine_tables(uint8_t res[256], const uint8_t outer[256], const uint8_t inner[256]) { 313 for (int i = 0; i < 256; i++) { 314 res[i] = outer[inner[i]]; 315 } 316} 317 318sk_sp<SkColorFilter> SkTable_ColorFilter::makeComposed(sk_sp<SkColorFilter> innerFilter) const { 319 SkBitmap innerBM; 320 if (!innerFilter->asComponentTable(&innerBM)) { 321 return nullptr; 322 } 323 324 innerBM.lockPixels(); 325 if (nullptr == innerBM.getPixels()) { 326 return nullptr; 327 } 328 329 const uint8_t* table = fStorage; 330 const uint8_t* tableA = gIdentityTable; 331 const uint8_t* tableR = gIdentityTable; 332 const uint8_t* tableG = gIdentityTable; 333 const uint8_t* tableB = gIdentityTable; 334 if (fFlags & kA_Flag) { 335 tableA = table; table += 256; 336 } 337 if (fFlags & kR_Flag) { 338 tableR = table; table += 256; 339 } 340 if (fFlags & kG_Flag) { 341 tableG = table; table += 256; 342 } 343 if (fFlags & kB_Flag) { 344 tableB = table; 345 } 346 347 uint8_t concatA[256]; 348 uint8_t concatR[256]; 349 uint8_t concatG[256]; 350 uint8_t concatB[256]; 351 352 combine_tables(concatA, tableA, innerBM.getAddr8(0, 0)); 353 combine_tables(concatR, tableR, innerBM.getAddr8(0, 1)); 354 combine_tables(concatG, tableG, innerBM.getAddr8(0, 2)); 355 combine_tables(concatB, tableB, innerBM.getAddr8(0, 3)); 356 357 return SkTableColorFilter::MakeARGB(concatA, concatR, concatG, concatB); 358} 359 360#if SK_SUPPORT_GPU 361 362#include "GrContext.h" 363#include "GrFragmentProcessor.h" 364#include "GrInvariantOutput.h" 365#include "GrTextureStripAtlas.h" 366#include "SkGr.h" 367#include "glsl/GrGLSLFragmentProcessor.h" 368#include "glsl/GrGLSLFragmentShaderBuilder.h" 369#include "glsl/GrGLSLProgramDataManager.h" 370#include "glsl/GrGLSLUniformHandler.h" 371 372class ColorTableEffect : public GrFragmentProcessor { 373public: 374 static sk_sp<GrFragmentProcessor> Make(GrContext* context, SkBitmap bitmap, unsigned flags); 375 376 virtual ~ColorTableEffect(); 377 378 const char* name() const override { return "ColorTable"; } 379 380 const GrTextureStripAtlas* atlas() const { return fAtlas; } 381 int atlasRow() const { return fRow; } 382 383private: 384 GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; 385 386 void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override; 387 388 bool onIsEqual(const GrFragmentProcessor&) const override; 389 390 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; 391 392 ColorTableEffect(GrTexture* texture, GrTextureStripAtlas* atlas, int row, unsigned flags); 393 394 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; 395 396 TextureSampler fTextureSampler; 397 398 // currently not used in shader code, just to assist onComputeInvariantOutput(). 399 unsigned fFlags; 400 401 GrTextureStripAtlas* fAtlas; 402 int fRow; 403 404 typedef GrFragmentProcessor INHERITED; 405}; 406 407class GLColorTableEffect : public GrGLSLFragmentProcessor { 408public: 409 void emitCode(EmitArgs&) override; 410 411 static void GenKey(const GrProcessor&, const GrShaderCaps&, GrProcessorKeyBuilder*) {} 412 413protected: 414 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; 415 416private: 417 UniformHandle fRGBAYValuesUni; 418 typedef GrGLSLFragmentProcessor INHERITED; 419}; 420 421void GLColorTableEffect::onSetData(const GrGLSLProgramDataManager& pdm, const GrProcessor& proc) { 422 // The textures are organized in a strip where the rows are ordered a, r, g, b. 423 float rgbaYValues[4]; 424 const ColorTableEffect& cte = proc.cast<ColorTableEffect>(); 425 if (cte.atlas()) { 426 SkScalar yDelta = cte.atlas()->getNormalizedTexelHeight(); 427 rgbaYValues[3] = cte.atlas()->getYOffset(cte.atlasRow()) + SK_ScalarHalf * yDelta; 428 rgbaYValues[0] = rgbaYValues[3] + yDelta; 429 rgbaYValues[1] = rgbaYValues[0] + yDelta; 430 rgbaYValues[2] = rgbaYValues[1] + yDelta; 431 } else { 432 rgbaYValues[3] = 0.125; 433 rgbaYValues[0] = 0.375; 434 rgbaYValues[1] = 0.625; 435 rgbaYValues[2] = 0.875; 436 } 437 pdm.set4fv(fRGBAYValuesUni, 1, rgbaYValues); 438} 439 440void GLColorTableEffect::emitCode(EmitArgs& args) { 441 const char* yoffsets; 442 fRGBAYValuesUni = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, 443 kVec4f_GrSLType, kDefault_GrSLPrecision, 444 "yoffsets", &yoffsets); 445 static const float kColorScaleFactor = 255.0f / 256.0f; 446 static const float kColorOffsetFactor = 1.0f / 512.0f; 447 GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; 448 if (nullptr == args.fInputColor) { 449 // the input color is solid white (all ones). 450 static const float kMaxValue = kColorScaleFactor + kColorOffsetFactor; 451 fragBuilder->codeAppendf("\t\tvec4 coord = vec4(%f, %f, %f, %f);\n", 452 kMaxValue, kMaxValue, kMaxValue, kMaxValue); 453 454 } else { 455 fragBuilder->codeAppendf("\t\tfloat nonZeroAlpha = max(%s.a, .0001);\n", args.fInputColor); 456 fragBuilder->codeAppendf("\t\tvec4 coord = vec4(%s.rgb / nonZeroAlpha, nonZeroAlpha);\n", 457 args.fInputColor); 458 fragBuilder->codeAppendf("\t\tcoord = coord * %f + vec4(%f, %f, %f, %f);\n", 459 kColorScaleFactor, 460 kColorOffsetFactor, kColorOffsetFactor, 461 kColorOffsetFactor, kColorOffsetFactor); 462 } 463 464 SkString coord; 465 466 fragBuilder->codeAppendf("\t\t%s.a = ", args.fOutputColor); 467 coord.printf("vec2(coord.a, %s.a)", yoffsets); 468 fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str()); 469 fragBuilder->codeAppend(".a;\n"); 470 471 fragBuilder->codeAppendf("\t\t%s.r = ", args.fOutputColor); 472 coord.printf("vec2(coord.r, %s.r)", yoffsets); 473 fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str()); 474 fragBuilder->codeAppend(".a;\n"); 475 476 fragBuilder->codeAppendf("\t\t%s.g = ", args.fOutputColor); 477 coord.printf("vec2(coord.g, %s.g)", yoffsets); 478 fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str()); 479 fragBuilder->codeAppend(".a;\n"); 480 481 fragBuilder->codeAppendf("\t\t%s.b = ", args.fOutputColor); 482 coord.printf("vec2(coord.b, %s.b)", yoffsets); 483 fragBuilder->appendTextureLookup(args.fTexSamplers[0], coord.c_str()); 484 fragBuilder->codeAppend(".a;\n"); 485 486 fragBuilder->codeAppendf("\t\t%s.rgb *= %s.a;\n", args.fOutputColor, args.fOutputColor); 487} 488 489/////////////////////////////////////////////////////////////////////////////// 490sk_sp<GrFragmentProcessor> ColorTableEffect::Make(GrContext* context, SkBitmap bitmap, 491 unsigned flags) { 492 493 GrTextureStripAtlas::Desc desc; 494 desc.fWidth = bitmap.width(); 495 desc.fHeight = 128; 496 desc.fRowHeight = bitmap.height(); 497 desc.fContext = context; 498 desc.fConfig = SkImageInfo2GrPixelConfig(bitmap.info(), *context->caps()); 499 GrTextureStripAtlas* atlas = GrTextureStripAtlas::GetAtlas(desc); 500 int row = atlas->lockRow(bitmap); 501 sk_sp<GrTexture> texture; 502 if (-1 == row) { 503 atlas = nullptr; 504 texture.reset( 505 GrRefCachedBitmapTexture(context, bitmap, GrSamplerParams::ClampNoFilter(), nullptr)); 506 } else { 507 texture.reset(SkRef(atlas->getTexture())); 508 } 509 510 return sk_sp<GrFragmentProcessor>(new ColorTableEffect(texture.get(), atlas, row, flags)); 511} 512 513ColorTableEffect::ColorTableEffect(GrTexture* texture, GrTextureStripAtlas* atlas, int row, 514 unsigned flags) 515 : INHERITED(kNone_OptimizationFlags) // Not bothering with table-specific optimizations. 516 , fTextureSampler(texture) 517 , fFlags(flags) 518 , fAtlas(atlas) 519 , fRow(row) { 520 this->initClassID<ColorTableEffect>(); 521 this->addTextureSampler(&fTextureSampler); 522} 523 524ColorTableEffect::~ColorTableEffect() { 525 if (fAtlas) { 526 fAtlas->unlockRow(fRow); 527 } 528} 529 530void ColorTableEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps, 531 GrProcessorKeyBuilder* b) const { 532 GLColorTableEffect::GenKey(*this, caps, b); 533} 534 535GrGLSLFragmentProcessor* ColorTableEffect::onCreateGLSLInstance() const { 536 return new GLColorTableEffect; 537} 538 539bool ColorTableEffect::onIsEqual(const GrFragmentProcessor& other) const { 540 // For non-atlased instances, the texture (compared by base class) is sufficient to 541 // differentiate different tables. For atlased instances we ensure they are using the 542 // same row. 543 const ColorTableEffect& that = other.cast<ColorTableEffect>(); 544 SkASSERT(SkToBool(fAtlas) == SkToBool(that.fAtlas)); 545 // Ok to always do this comparison since both would be -1 if non-atlased. 546 return fRow == that.fRow; 547} 548 549void ColorTableEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { 550 // If we kept the table in the effect then we could actually run known inputs through the 551 // table. 552 GrColorComponentFlags invalidateFlags = kNone_GrColorComponentFlags; 553 if (fFlags & SkTable_ColorFilter::kR_Flag) { 554 invalidateFlags |= kR_GrColorComponentFlag; 555 } 556 if (fFlags & SkTable_ColorFilter::kG_Flag) { 557 invalidateFlags |= kG_GrColorComponentFlag; 558 } 559 if (fFlags & SkTable_ColorFilter::kB_Flag) { 560 invalidateFlags |= kB_GrColorComponentFlag; 561 } 562 if (fFlags & SkTable_ColorFilter::kA_Flag) { 563 invalidateFlags |= kA_GrColorComponentFlag; 564 } 565 inout->invalidateComponents(invalidateFlags); 566} 567 568/////////////////////////////////////////////////////////////////////////////// 569 570GR_DEFINE_FRAGMENT_PROCESSOR_TEST(ColorTableEffect); 571 572sk_sp<GrFragmentProcessor> ColorTableEffect::TestCreate(GrProcessorTestData* d) { 573 int flags = 0; 574 uint8_t luts[256][4]; 575 do { 576 for (int i = 0; i < 4; ++i) { 577 flags |= d->fRandom->nextBool() ? (1 << i): 0; 578 } 579 } while (!flags); 580 for (int i = 0; i < 4; ++i) { 581 if (flags & (1 << i)) { 582 for (int j = 0; j < 256; ++j) { 583 luts[j][i] = SkToU8(d->fRandom->nextBits(8)); 584 } 585 } 586 } 587 auto filter(SkTableColorFilter::MakeARGB( 588 (flags & (1 << 0)) ? luts[0] : nullptr, 589 (flags & (1 << 1)) ? luts[1] : nullptr, 590 (flags & (1 << 2)) ? luts[2] : nullptr, 591 (flags & (1 << 3)) ? luts[3] : nullptr 592 )); 593 sk_sp<SkColorSpace> colorSpace = GrTest::TestColorSpace(d->fRandom); 594 sk_sp<GrFragmentProcessor> fp = filter->asFragmentProcessor(d->fContext, colorSpace.get()); 595 SkASSERT(fp); 596 return fp; 597} 598 599sk_sp<GrFragmentProcessor> SkTable_ColorFilter::asFragmentProcessor(GrContext* context, 600 SkColorSpace*) const { 601 SkBitmap bitmap; 602 this->asComponentTable(&bitmap); 603 604 return ColorTableEffect::Make(context, bitmap, fFlags); 605} 606 607#endif // SK_SUPPORT_GPU 608 609/////////////////////////////////////////////////////////////////////////////// 610 611#ifdef SK_CPU_BENDIAN 612#else 613 #define SK_A32_INDEX (3 - (SK_A32_SHIFT >> 3)) 614 #define SK_R32_INDEX (3 - (SK_R32_SHIFT >> 3)) 615 #define SK_G32_INDEX (3 - (SK_G32_SHIFT >> 3)) 616 #define SK_B32_INDEX (3 - (SK_B32_SHIFT >> 3)) 617#endif 618 619/////////////////////////////////////////////////////////////////////////////// 620 621sk_sp<SkColorFilter> SkTableColorFilter::Make(const uint8_t table[256]) { 622 return sk_make_sp<SkTable_ColorFilter>(table, table, table, table); 623} 624 625sk_sp<SkColorFilter> SkTableColorFilter::MakeARGB(const uint8_t tableA[256], 626 const uint8_t tableR[256], 627 const uint8_t tableG[256], 628 const uint8_t tableB[256]) { 629 return sk_make_sp<SkTable_ColorFilter>(tableA, tableR, tableG, tableB); 630} 631 632SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkTableColorFilter) 633 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTable_ColorFilter) 634SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END 635