1 /* 2 * Copyright 2013 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 #include "SampleCode.h" 8 #include "Sk1DPathEffect.h" 9 #include "Sk2DPathEffect.h" 10 #include "SkAlphaThresholdFilter.h" 11 #include "SkArcToPathEffect.h" 12 #include "SkBlurImageFilter.h" 13 #include "SkBlurMaskFilter.h" 14 #include "SkCanvas.h" 15 #include "SkColorFilter.h" 16 #include "SkColorFilterImageFilter.h" 17 #include "SkColorMatrixFilter.h" 18 #include "SkComposeImageFilter.h" 19 #include "SkCornerPathEffect.h" 20 #include "SkDashPathEffect.h" 21 #include "SkData.h" 22 #include "SkDiscretePathEffect.h" 23 #include "SkDisplacementMapEffect.h" 24 #include "SkDropShadowImageFilter.h" 25 #include "SkEmbossMaskFilter.h" 26 #include "SkFlattenableSerialization.h" 27 #include "SkImageSource.h" 28 #include "SkLayerRasterizer.h" 29 #include "SkLightingImageFilter.h" 30 #include "SkLumaColorFilter.h" 31 #include "SkMagnifierImageFilter.h" 32 #include "SkMatrixConvolutionImageFilter.h" 33 #include "SkMergeImageFilter.h" 34 #include "SkMorphologyImageFilter.h" 35 #include "SkOffsetImageFilter.h" 36 #include "SkPaintImageFilter.h" 37 #include "SkPerlinNoiseShader.h" 38 #include "SkPictureImageFilter.h" 39 #include "SkPictureRecorder.h" 40 #include "SkPoint3.h" 41 #include "SkRandom.h" 42 #include "SkRegion.h" 43 #include "SkTableColorFilter.h" 44 #include "SkTileImageFilter.h" 45 #include "SkTypeface.h" 46 #include "SkView.h" 47 #include "SkXfermodeImageFilter.h" 48 #include <stdio.h> 49 #include <time.h> 50 51 //#define SK_ADD_RANDOM_BIT_FLIPS 52 //#define SK_FUZZER_IS_VERBOSE 53 54 static const uint32_t kSeed = (uint32_t)(time(nullptr)); 55 static SkRandom gRand(kSeed); 56 static bool return_large = false; 57 static bool return_undef = false; 58 59 static const int kBitmapSize = 24; 60 61 static int R(float x) { 62 return (int)floor(SkScalarToFloat(gRand.nextUScalar1()) * x); 63 } 64 65 #if defined _WIN32 66 #pragma warning ( push ) 67 // we are intentionally causing an overflow here 68 // (warning C4756: overflow in constant arithmetic) 69 #pragma warning ( disable : 4756 ) 70 #endif 71 72 static float huge() { 73 double d = 1e100; 74 float f = (float)d; 75 return f; 76 } 77 78 #if defined _WIN32 79 #pragma warning ( pop ) 80 #endif 81 82 static float make_number(bool positiveOnly) { 83 float f = positiveOnly ? 1.0f : 0.0f; 84 float v = f; 85 int sel; 86 87 if (return_large) sel = R(6); else sel = R(4); 88 if (!return_undef && sel == 0) sel = 1; 89 90 if (R(2) == 1) v = (float)(R(100)+f); else 91 92 switch (sel) { 93 case 0: break; 94 case 1: v = f; break; 95 case 2: v = 0.000001f; break; 96 case 3: v = 10000.0f; break; 97 case 4: v = 2000000000.0f; break; 98 case 5: v = huge(); break; 99 } 100 101 if (!positiveOnly && (R(4) == 1)) v = -v; 102 return v; 103 } 104 105 static SkScalar make_scalar(bool positiveOnly = false) { 106 return make_number(positiveOnly); 107 } 108 109 static SkString make_string() { 110 int length = R(1000); 111 SkString str(length); 112 for (int i = 0; i < length; ++i) { 113 str[i] = static_cast<char>(R(256)); 114 } 115 return str; 116 } 117 118 static SkString make_font_name() { 119 int sel = R(8); 120 121 switch(sel) { 122 case 0: return SkString("Courier New"); 123 case 1: return SkString("Helvetica"); 124 case 2: return SkString("monospace"); 125 case 3: return SkString("sans-serif"); 126 case 4: return SkString("serif"); 127 case 5: return SkString("Times"); 128 case 6: return SkString("Times New Roman"); 129 case 7: 130 default: 131 return make_string(); 132 } 133 } 134 135 static bool make_bool() { 136 return R(2) == 1; 137 } 138 139 static SkRect make_rect() { 140 return SkRect::MakeWH(SkIntToScalar(R(static_cast<float>(kBitmapSize))), 141 SkIntToScalar(R(static_cast<float>(kBitmapSize)))); 142 } 143 144 static SkRegion make_region() { 145 SkIRect iRegion = SkIRect::MakeXYWH(R(static_cast<float>(kBitmapSize)), 146 R(static_cast<float>(kBitmapSize)), 147 R(static_cast<float>(kBitmapSize)), 148 R(static_cast<float>(kBitmapSize))); 149 return SkRegion(iRegion); 150 } 151 152 static SkMatrix make_matrix() { 153 SkMatrix m; 154 for (int i = 0; i < 9; ++i) { 155 m[i] = make_scalar(); 156 } 157 return m; 158 } 159 160 static SkBlendMode make_xfermode() { 161 return static_cast<SkBlendMode>(R((int)SkBlendMode::kLastMode+1)); 162 } 163 164 static SkPaint::Align make_paint_align() { 165 return static_cast<SkPaint::Align>(R(SkPaint::kRight_Align+1)); 166 } 167 168 static SkPaint::Hinting make_paint_hinting() { 169 return static_cast<SkPaint::Hinting>(R(SkPaint::kFull_Hinting+1)); 170 } 171 172 static SkPaint::Style make_paint_style() { 173 return static_cast<SkPaint::Style>(R(SkPaint::kStrokeAndFill_Style+1)); 174 } 175 176 static SkPaint::Cap make_paint_cap() { 177 return static_cast<SkPaint::Cap>(R(SkPaint::kDefault_Cap+1)); 178 } 179 180 static SkPaint::Join make_paint_join() { 181 return static_cast<SkPaint::Join>(R(SkPaint::kDefault_Join+1)); 182 } 183 184 static SkPaint::TextEncoding make_paint_text_encoding() { 185 return static_cast<SkPaint::TextEncoding>(R(SkPaint::kGlyphID_TextEncoding+1)); 186 } 187 188 static SkBlurStyle make_blur_style() { 189 return static_cast<SkBlurStyle>(R(kLastEnum_SkBlurStyle+1)); 190 } 191 192 static SkBlurMaskFilter::BlurFlags make_blur_mask_filter_flag() { 193 return static_cast<SkBlurMaskFilter::BlurFlags>(R(SkBlurMaskFilter::kAll_BlurFlag+1)); 194 } 195 196 static SkFilterQuality make_filter_quality() { 197 return static_cast<SkFilterQuality>(R(kHigh_SkFilterQuality+1)); 198 } 199 200 static SkFontStyle make_typeface_style() { 201 return SkFontStyle::FromOldStyle(SkTypeface::kBoldItalic+1); 202 } 203 204 static SkPath1DPathEffect::Style make_path_1d_path_effect_style() { 205 return static_cast<SkPath1DPathEffect::Style>(R((int)SkPath1DPathEffect::kLastEnum_Style + 1)); 206 } 207 208 static SkColor make_color() { 209 return (R(2) == 1) ? 0xFFC0F0A0 : 0xFF000090; 210 } 211 212 static SkDropShadowImageFilter::ShadowMode make_shadow_mode() { 213 return (R(2) == 1) ? SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode : 214 SkDropShadowImageFilter::kDrawShadowOnly_ShadowMode; 215 } 216 217 static SkPoint3 make_point() { 218 return SkPoint3::Make(make_scalar(), make_scalar(), make_scalar(true)); 219 } 220 221 static SkDisplacementMapEffect::ChannelSelectorType make_channel_selector_type() { 222 return static_cast<SkDisplacementMapEffect::ChannelSelectorType>(R(4)+1); 223 } 224 225 static bool valid_for_raster_canvas(const SkImageInfo& info) { 226 switch (info.colorType()) { 227 case kAlpha_8_SkColorType: 228 case kRGB_565_SkColorType: 229 return true; 230 case kN32_SkColorType: 231 return kPremul_SkAlphaType == info.alphaType() || 232 kOpaque_SkAlphaType == info.alphaType(); 233 default: 234 break; 235 } 236 return false; 237 } 238 239 static SkColorType rand_colortype() { 240 return (SkColorType)R(kLastEnum_SkColorType + 1); 241 } 242 243 static void rand_bitmap_for_canvas(SkBitmap* bitmap) { 244 SkImageInfo info; 245 do { 246 info = SkImageInfo::Make(kBitmapSize, kBitmapSize, rand_colortype(), 247 kPremul_SkAlphaType); 248 } while (!valid_for_raster_canvas(info) || !bitmap->tryAllocPixels(info)); 249 } 250 251 static void make_g_bitmap(SkBitmap& bitmap) { 252 rand_bitmap_for_canvas(&bitmap); 253 254 SkCanvas canvas(bitmap); 255 canvas.clear(0x00000000); 256 SkPaint paint; 257 paint.setAntiAlias(true); 258 paint.setColor(0xFF884422); 259 paint.setTextSize(SkIntToScalar(kBitmapSize/2)); 260 const char* str = "g"; 261 canvas.drawString(str, SkIntToScalar(kBitmapSize/8), 262 SkIntToScalar(kBitmapSize/4), paint); 263 } 264 265 static void make_checkerboard_bitmap(SkBitmap& bitmap) { 266 rand_bitmap_for_canvas(&bitmap); 267 268 SkCanvas canvas(bitmap); 269 canvas.clear(0x00000000); 270 SkPaint darkPaint; 271 darkPaint.setColor(0xFF804020); 272 SkPaint lightPaint; 273 lightPaint.setColor(0xFF244484); 274 const int i = kBitmapSize / 8; 275 const SkScalar f = SkIntToScalar(i); 276 for (int y = 0; y < kBitmapSize; y += i) { 277 for (int x = 0; x < kBitmapSize; x += i) { 278 canvas.save(); 279 canvas.translate(SkIntToScalar(x), SkIntToScalar(y)); 280 canvas.drawRect(SkRect::MakeXYWH(0, 0, f, f), darkPaint); 281 canvas.drawRect(SkRect::MakeXYWH(f, 0, f, f), lightPaint); 282 canvas.drawRect(SkRect::MakeXYWH(0, f, f, f), lightPaint); 283 canvas.drawRect(SkRect::MakeXYWH(f, f, f, f), darkPaint); 284 canvas.restore(); 285 } 286 } 287 } 288 289 static const SkBitmap& make_bitmap() { 290 static SkBitmap bitmap[2]; 291 static bool initialized = false; 292 if (!initialized) { 293 make_g_bitmap(bitmap[0]); 294 make_checkerboard_bitmap(bitmap[1]); 295 initialized = true; 296 } 297 return bitmap[R(2)]; 298 } 299 300 static sk_sp<SkData> make_3Dlut(int* cubeDimension, bool invR, bool invG, bool invB) { 301 int size = 4 << R(5); 302 auto data = SkData::MakeUninitialized(sizeof(SkColor) * size * size * size); 303 SkColor* pixels = (SkColor*)(data->writable_data()); 304 SkAutoTMalloc<uint8_t> lutMemory(size); 305 SkAutoTMalloc<uint8_t> invLutMemory(size); 306 uint8_t* lut = lutMemory.get(); 307 uint8_t* invLut = invLutMemory.get(); 308 const int maxIndex = size - 1; 309 for (int i = 0; i < size; i++) { 310 lut[i] = (i * 255) / maxIndex; 311 invLut[i] = ((maxIndex - i) * 255) / maxIndex; 312 } 313 for (int r = 0; r < size; ++r) { 314 for (int g = 0; g < size; ++g) { 315 for (int b = 0; b < size; ++b) { 316 pixels[(size * ((size * b) + g)) + r] = SkColorSetARGB(0xFF, 317 invR ? invLut[r] : lut[r], 318 invG ? invLut[g] : lut[g], 319 invB ? invLut[b] : lut[b]); 320 } 321 } 322 } 323 if (cubeDimension) { 324 *cubeDimension = size; 325 } 326 return data; 327 } 328 329 static void drawSomething(SkCanvas* canvas) { 330 SkPaint paint; 331 332 canvas->save(); 333 canvas->scale(0.5f, 0.5f); 334 canvas->drawBitmap(make_bitmap(), 0, 0, nullptr); 335 canvas->restore(); 336 337 paint.setAntiAlias(true); 338 339 paint.setColor(SK_ColorRED); 340 canvas->drawCircle(SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/3), paint); 341 paint.setColor(SK_ColorBLACK); 342 paint.setTextSize(SkIntToScalar(kBitmapSize/3)); 343 canvas->drawString("Picture", SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/4), paint); 344 } 345 346 static void rand_color_table(uint8_t* table) { 347 for (int i = 0; i < 256; ++i) { 348 table[i] = R(256); 349 } 350 } 351 352 static sk_sp<SkColorFilter> make_color_filter() { 353 switch (R(6)) { 354 case 0: { 355 SkScalar array[20]; 356 for (int i = 0; i < 20; ++i) { 357 array[i] = make_scalar(); 358 } 359 return SkColorFilter::MakeMatrixFilterRowMajor255(array); 360 } 361 case 1: 362 return SkLumaColorFilter::Make(); 363 case 2: { 364 uint8_t tableA[256]; 365 uint8_t tableR[256]; 366 uint8_t tableG[256]; 367 uint8_t tableB[256]; 368 rand_color_table(tableA); 369 rand_color_table(tableR); 370 rand_color_table(tableG); 371 rand_color_table(tableB); 372 return SkTableColorFilter::MakeARGB(tableA, tableR, tableG, tableB); 373 } 374 case 3: 375 return SkColorFilter::MakeModeFilter(make_color(), make_xfermode()); 376 case 4: 377 return SkColorMatrixFilter::MakeLightingFilter(make_color(), make_color()); 378 case 5: 379 default: 380 break; 381 } 382 return nullptr; 383 } 384 385 static SkPath make_path() { 386 SkPath path; 387 int numOps = R(30); 388 for (int i = 0; i < numOps; ++i) { 389 switch (R(6)) { 390 case 0: 391 path.moveTo(make_scalar(), make_scalar()); 392 break; 393 case 1: 394 path.lineTo(make_scalar(), make_scalar()); 395 break; 396 case 2: 397 path.quadTo(make_scalar(), make_scalar(), make_scalar(), make_scalar()); 398 break; 399 case 3: 400 path.conicTo(make_scalar(), make_scalar(), make_scalar(), make_scalar(), make_scalar()); 401 break; 402 case 4: 403 path.cubicTo(make_scalar(), make_scalar(), make_scalar(), 404 make_scalar(), make_scalar(), make_scalar()); 405 break; 406 case 5: 407 default: 408 path.arcTo(make_scalar(), make_scalar(), make_scalar(), make_scalar(), make_scalar()); 409 break; 410 411 } 412 } 413 path.close(); 414 return path; 415 } 416 417 static sk_sp<SkPathEffect> make_path_effect(bool canBeNull = true) { 418 sk_sp<SkPathEffect> pathEffect; 419 if (canBeNull && (R(3) == 1)) { return pathEffect; } 420 421 switch (R(9)) { 422 case 0: 423 pathEffect = SkArcToPathEffect::Make(make_scalar(true)); 424 break; 425 case 1: 426 pathEffect = SkPathEffect::MakeCompose(make_path_effect(false), 427 make_path_effect(false)); 428 break; 429 case 2: 430 pathEffect = SkCornerPathEffect::Make(make_scalar()); 431 break; 432 case 3: { 433 int count = R(10); 434 SkScalar intervals[10]; 435 for (int i = 0; i < count; ++i) { 436 intervals[i] = make_scalar(); 437 } 438 pathEffect = SkDashPathEffect::Make(intervals, count, make_scalar()); 439 break; 440 } 441 case 4: 442 pathEffect = SkDiscretePathEffect::Make(make_scalar(), make_scalar()); 443 break; 444 case 5: 445 pathEffect = SkPath1DPathEffect::Make(make_path(), make_scalar(), make_scalar(), 446 make_path_1d_path_effect_style()); 447 break; 448 case 6: 449 pathEffect = SkLine2DPathEffect::Make(make_scalar(), make_matrix()); 450 break; 451 case 7: 452 pathEffect = SkPath2DPathEffect::Make(make_matrix(), make_path()); 453 break; 454 case 8: 455 default: 456 pathEffect = SkPathEffect::MakeSum(make_path_effect(false), 457 make_path_effect(false)); 458 break; 459 } 460 return pathEffect; 461 } 462 463 static sk_sp<SkMaskFilter> make_mask_filter() { 464 sk_sp<SkMaskFilter> maskFilter; 465 switch (R(3)) { 466 case 0: 467 maskFilter = SkBlurMaskFilter::Make(make_blur_style(), make_scalar(), 468 make_blur_mask_filter_flag()); 469 case 1: { 470 SkEmbossMaskFilter::Light light; 471 for (int i = 0; i < 3; ++i) { 472 light.fDirection[i] = make_scalar(); 473 } 474 light.fPad = R(65536); 475 light.fAmbient = R(256); 476 light.fSpecular = R(256); 477 maskFilter = SkEmbossMaskFilter::Make(make_scalar(), light); 478 } 479 case 2: 480 default: 481 break; 482 } 483 return maskFilter; 484 } 485 486 static sk_sp<SkImageFilter> make_image_filter(bool canBeNull = true); 487 488 static SkPaint make_paint() { 489 SkPaint paint; 490 paint.setHinting(make_paint_hinting()); 491 paint.setAntiAlias(make_bool()); 492 paint.setDither(make_bool()); 493 paint.setLinearText(make_bool()); 494 paint.setSubpixelText(make_bool()); 495 paint.setLCDRenderText(make_bool()); 496 paint.setEmbeddedBitmapText(make_bool()); 497 paint.setAutohinted(make_bool()); 498 paint.setVerticalText(make_bool()); 499 paint.setFakeBoldText(make_bool()); 500 paint.setDevKernText(make_bool()); 501 paint.setFilterQuality(make_filter_quality()); 502 paint.setStyle(make_paint_style()); 503 paint.setColor(make_color()); 504 paint.setStrokeWidth(make_scalar()); 505 paint.setStrokeMiter(make_scalar()); 506 paint.setStrokeCap(make_paint_cap()); 507 paint.setStrokeJoin(make_paint_join()); 508 paint.setColorFilter(make_color_filter()); 509 paint.setBlendMode(make_xfermode()); 510 paint.setPathEffect(make_path_effect()); 511 paint.setMaskFilter(make_mask_filter()); 512 513 if (false) { 514 // our validating buffer does not support typefaces yet, so skip this for now 515 paint.setTypeface(SkTypeface::MakeFromName(make_font_name().c_str(), 516 make_typeface_style())); 517 } 518 519 SkLayerRasterizer::Builder rasterizerBuilder; 520 SkPaint paintForRasterizer; 521 if (R(2) == 1) { 522 paintForRasterizer = make_paint(); 523 } 524 rasterizerBuilder.addLayer(paintForRasterizer); 525 paint.setRasterizer(rasterizerBuilder.detach()); 526 paint.setImageFilter(make_image_filter()); 527 sk_sp<SkData> data(make_3Dlut(nullptr, make_bool(), make_bool(), make_bool())); 528 paint.setTextAlign(make_paint_align()); 529 paint.setTextSize(make_scalar()); 530 paint.setTextScaleX(make_scalar()); 531 paint.setTextSkewX(make_scalar()); 532 paint.setTextEncoding(make_paint_text_encoding()); 533 return paint; 534 } 535 536 static sk_sp<SkImageFilter> make_image_filter(bool canBeNull) { 537 sk_sp<SkImageFilter> filter; 538 539 // Add a 1 in 3 chance to get a nullptr input 540 if (canBeNull && (R(3) == 1)) { 541 return filter; 542 } 543 544 enum { ALPHA_THRESHOLD, MERGE, COLOR, BLUR, MAGNIFIER, 545 XFERMODE, OFFSET, MATRIX, MATRIX_CONVOLUTION, COMPOSE, 546 DISTANT_LIGHT, POINT_LIGHT, SPOT_LIGHT, NOISE, DROP_SHADOW, 547 MORPHOLOGY, BITMAP, DISPLACE, TILE, PICTURE, PAINT, NUM_FILTERS }; 548 549 switch (R(NUM_FILTERS)) { 550 case ALPHA_THRESHOLD: 551 filter = SkAlphaThresholdFilter::Make(make_region(), 552 make_scalar(), 553 make_scalar(), 554 make_image_filter()); 555 break; 556 case MERGE: 557 filter = SkMergeImageFilter::Make(make_image_filter(), 558 make_image_filter()); 559 break; 560 case COLOR: { 561 sk_sp<SkColorFilter> cf(make_color_filter()); 562 filter = cf ? SkColorFilterImageFilter::Make(std::move(cf), make_image_filter()) 563 : nullptr; 564 break; 565 } 566 case BLUR: 567 filter = SkBlurImageFilter::Make(make_scalar(true), 568 make_scalar(true), 569 make_image_filter()); 570 break; 571 case MAGNIFIER: 572 filter = SkMagnifierImageFilter::Make(make_rect(), 573 make_scalar(true), 574 make_image_filter()); 575 break; 576 case XFERMODE: 577 filter = SkXfermodeImageFilter::Make(make_xfermode(), 578 make_image_filter(), 579 make_image_filter(), 580 nullptr); 581 break; 582 case OFFSET: 583 filter = SkOffsetImageFilter::Make(make_scalar(), make_scalar(), make_image_filter()); 584 break; 585 case MATRIX: 586 filter = SkImageFilter::MakeMatrixFilter(make_matrix(), 587 (SkFilterQuality)R(4), 588 make_image_filter()); 589 break; 590 case MATRIX_CONVOLUTION: { 591 SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize), 592 SkIntToScalar(kBitmapSize))); 593 SkISize size = SkISize::Make(R(10)+1, R(10)+1); 594 int arraySize = size.width() * size.height(); 595 SkTArray<SkScalar> kernel(arraySize); 596 for (int i = 0; i < arraySize; ++i) { 597 kernel.push_back() = make_scalar(); 598 } 599 SkIPoint kernelOffset = SkIPoint::Make(R(SkIntToScalar(size.width())), 600 R(SkIntToScalar(size.height()))); 601 602 filter = SkMatrixConvolutionImageFilter::Make(size, 603 kernel.begin(), 604 make_scalar(), 605 make_scalar(), 606 kernelOffset, 607 (SkMatrixConvolutionImageFilter::TileMode)R(3), 608 R(2) == 1, 609 make_image_filter(), 610 &cropR); 611 break; 612 } 613 case COMPOSE: 614 filter = SkComposeImageFilter::Make(make_image_filter(), make_image_filter()); 615 break; 616 case DISTANT_LIGHT: 617 filter = (R(2) == 1) 618 ? SkLightingImageFilter::MakeDistantLitDiffuse(make_point(), make_color(), 619 make_scalar(), make_scalar(), 620 make_image_filter()) 621 : SkLightingImageFilter::MakeDistantLitSpecular(make_point(), make_color(), 622 make_scalar(), make_scalar(), 623 SkIntToScalar(R(10)), 624 make_image_filter()); 625 break; 626 case POINT_LIGHT: 627 filter = (R(2) == 1) 628 ? SkLightingImageFilter::MakePointLitDiffuse(make_point(), make_color(), 629 make_scalar(), make_scalar(), 630 make_image_filter()) 631 : SkLightingImageFilter::MakePointLitSpecular(make_point(), make_color(), 632 make_scalar(), make_scalar(), 633 SkIntToScalar(R(10)), 634 make_image_filter()); 635 break; 636 case SPOT_LIGHT: 637 filter = (R(2) == 1) 638 ? SkLightingImageFilter::MakeSpotLitDiffuse(SkPoint3::Make(0, 0, 0), 639 make_point(), make_scalar(), 640 make_scalar(), make_color(), 641 make_scalar(), make_scalar(), 642 make_image_filter()) 643 : SkLightingImageFilter::MakeSpotLitSpecular(SkPoint3::Make(0, 0, 0), 644 make_point(), make_scalar(), 645 make_scalar(), make_color(), 646 make_scalar(), make_scalar(), 647 SkIntToScalar(R(10)), 648 make_image_filter()); 649 break; 650 case NOISE: { 651 sk_sp<SkShader> shader((R(2) == 1) 652 ? SkPerlinNoiseShader::MakeFractalNoise(make_scalar(true), make_scalar(true), 653 R(10.0f), make_scalar()) 654 : SkPerlinNoiseShader::MakeTurbulence(make_scalar(true), make_scalar(true), 655 R(10.0f), make_scalar())); 656 SkPaint paint; 657 paint.setShader(shader); 658 SkImageFilter::CropRect cropR(SkRect::MakeWH(SkIntToScalar(kBitmapSize), 659 SkIntToScalar(kBitmapSize))); 660 filter = SkPaintImageFilter::Make(paint, &cropR); 661 break; 662 } 663 case DROP_SHADOW: 664 filter = SkDropShadowImageFilter::Make(make_scalar(), 665 make_scalar(), 666 make_scalar(true), 667 make_scalar(true), 668 make_color(), 669 make_shadow_mode(), 670 make_image_filter(), 671 nullptr); 672 break; 673 case MORPHOLOGY: 674 if (R(2) == 1) { 675 filter = SkDilateImageFilter::Make(R(static_cast<float>(kBitmapSize)), 676 R(static_cast<float>(kBitmapSize)), 677 make_image_filter()); 678 } else { 679 filter = SkErodeImageFilter::Make(R(static_cast<float>(kBitmapSize)), 680 R(static_cast<float>(kBitmapSize)), 681 make_image_filter()); 682 } 683 break; 684 case BITMAP: { 685 sk_sp<SkImage> image(SkImage::MakeFromBitmap(make_bitmap())); 686 if (R(2) == 1) { 687 filter = SkImageSource::Make(std::move(image), 688 make_rect(), 689 make_rect(), 690 kHigh_SkFilterQuality); 691 } else { 692 filter = SkImageSource::Make(std::move(image)); 693 } 694 break; 695 } 696 case DISPLACE: 697 filter = SkDisplacementMapEffect::Make(make_channel_selector_type(), 698 make_channel_selector_type(), 699 make_scalar(), 700 make_image_filter(false), 701 make_image_filter()); 702 break; 703 case TILE: 704 filter = SkTileImageFilter::Make(make_rect(), make_rect(), make_image_filter(false)); 705 break; 706 case PICTURE: { 707 SkRTreeFactory factory; 708 SkPictureRecorder recorder; 709 SkCanvas* recordingCanvas = recorder.beginRecording(SkIntToScalar(kBitmapSize), 710 SkIntToScalar(kBitmapSize), 711 &factory, 0); 712 drawSomething(recordingCanvas); 713 sk_sp<SkPicture> pict(recorder.finishRecordingAsPicture()); 714 filter = SkPictureImageFilter::Make(pict, make_rect()); 715 break; 716 } 717 case PAINT: { 718 SkImageFilter::CropRect cropR(make_rect()); 719 filter = SkPaintImageFilter::Make(make_paint(), &cropR); 720 break; 721 } 722 default: 723 break; 724 } 725 return (filter || canBeNull) ? filter : make_image_filter(canBeNull); 726 } 727 728 static sk_sp<SkImageFilter> make_serialized_image_filter() { 729 sk_sp<SkImageFilter> filter(make_image_filter(false)); 730 sk_sp<SkData> data(SkValidatingSerializeFlattenable(filter.get())); 731 const unsigned char* ptr = static_cast<const unsigned char*>(data->data()); 732 size_t len = data->size(); 733 #ifdef SK_ADD_RANDOM_BIT_FLIPS 734 unsigned char* p = const_cast<unsigned char*>(ptr); 735 for (size_t i = 0; i < len; ++i, ++p) { 736 if (R(250) == 1) { // 0.4% of the time, flip a bit or byte 737 if (R(10) == 1) { // Then 10% of the time, change a whole byte 738 switch(R(3)) { 739 case 0: 740 *p ^= 0xFF; // Flip entire byte 741 break; 742 case 1: 743 *p = 0xFF; // Set all bits to 1 744 break; 745 case 2: 746 *p = 0x00; // Set all bits to 0 747 break; 748 } 749 } else { 750 *p ^= (1 << R(8)); 751 } 752 } 753 } 754 #endif // SK_ADD_RANDOM_BIT_FLIPS 755 return SkValidatingDeserializeImageFilter(ptr, len); 756 } 757 758 static void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) { 759 canvas->save(); 760 canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y), 761 SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize))); 762 canvas->drawBitmap(make_bitmap(), SkIntToScalar(x), SkIntToScalar(y), &paint); 763 canvas->restore(); 764 } 765 766 static void do_fuzz(SkCanvas* canvas) { 767 sk_sp<SkImageFilter> filter = make_serialized_image_filter(); 768 769 #ifdef SK_FUZZER_IS_VERBOSE 770 static uint32_t numFilters = 0; 771 static uint32_t numValidFilters = 0; 772 if (0 == numFilters) { 773 printf("Fuzzing with %u\n", kSeed); 774 } 775 numFilters++; 776 if (filter) { 777 numValidFilters++; 778 } 779 printf("Filter no : %u. Valid filters so far : %u\r", numFilters, numValidFilters); 780 fflush(stdout); 781 #endif 782 783 SkPaint paint; 784 paint.setImageFilter(filter); 785 drawClippedBitmap(canvas, 0, 0, paint); 786 } 787 788 ////////////////////////////////////////////////////////////////////////////// 789 790 class ImageFilterFuzzView : public SampleView { 791 public: 792 ImageFilterFuzzView() { 793 this->setBGColor(0xFFDDDDDD); 794 } 795 796 protected: 797 // overrides from SkEventSink 798 virtual bool onQuery(SkEvent* evt) { 799 if (SampleCode::TitleQ(*evt)) { 800 SampleCode::TitleR(evt, "ImageFilterFuzzer"); 801 return true; 802 } 803 return this->INHERITED::onQuery(evt); 804 } 805 806 void drawBG(SkCanvas* canvas) { 807 canvas->drawColor(0xFFDDDDDD); 808 } 809 810 virtual void onDrawContent(SkCanvas* canvas) { 811 do_fuzz(canvas); 812 this->inval(0); 813 } 814 815 private: 816 typedef SkView INHERITED; 817 }; 818 819 ////////////////////////////////////////////////////////////////////////////// 820 821 static SkView* MyFactory() { return new ImageFilterFuzzView; } 822 static SkViewRegister reg(MyFactory); 823
