1 /* 2 * Copyright 2014 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 "sk_tool_utils.h" 9 10 #include "Resources.h" 11 #include "SkBitmap.h" 12 #include "SkCanvas.h" 13 #include "SkCommonFlags.h" 14 #include "SkFontMgr.h" 15 #include "SkFontStyle.h" 16 #include "SkImage.h" 17 #include "SkPixelRef.h" 18 #include "SkPM4f.h" 19 #include "SkPoint3.h" 20 #include "SkShader.h" 21 #include "SkSurface.h" 22 #include "SkTestScalerContext.h" 23 #include "SkTextBlob.h" 24 25 namespace sk_tool_utils { 26 27 static const char* platform_os_name() { 28 for (int index = 0; index < FLAGS_key.count(); index += 2) { 29 if (!strcmp("os", FLAGS_key[index])) { 30 return FLAGS_key[index + 1]; 31 } 32 } 33 return ""; 34 } 35 36 sk_sp<SkTypeface> emoji_typeface() { 37 #if defined(SK_BUILD_FOR_WIN) 38 sk_sp<SkFontMgr> fm(SkFontMgr::RefDefault()); 39 const char *colorEmojiFontName = "Segoe UI Emoji"; 40 sk_sp<SkTypeface> typeface(fm->matchFamilyStyle(colorEmojiFontName, SkFontStyle())); 41 if (typeface) { 42 return typeface; 43 } 44 sk_sp<SkTypeface> fallback(fm->matchFamilyStyleCharacter( 45 colorEmojiFontName, SkFontStyle(), nullptr /* bcp47 */, 0 /* bcp47Count */, 46 0x1f4b0 /* character: */)); 47 if (fallback) { 48 return fallback; 49 } 50 // If we don't have Segoe UI Emoji and can't find a fallback, try Segoe UI Symbol. 51 // Windows 7 does not have Segoe UI Emoji; Segoe UI Symbol has the (non - color) emoji. 52 return SkTypeface::MakeFromName("Segoe UI Symbol", SkFontStyle()); 53 54 #elif defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS) 55 return SkTypeface::MakeFromName("Apple Color Emoji", SkFontStyle()); 56 57 #else 58 return MakeResourceAsTypeface("fonts/Funkster.ttf"); 59 60 #endif 61 } 62 63 const char* emoji_sample_text() { 64 #if defined(SK_BUILD_FOR_WIN) || defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS) 65 return "\xF0\x9F\x92\xB0" "\xF0\x9F\x8F\xA1" "\xF0\x9F\x8E\x85" // 66 "\xF0\x9F\x8D\xAA" "\xF0\x9F\x8D\x95" "\xF0\x9F\x9A\x80" // 67 "\xF0\x9F\x9A\xBB" "\xF0\x9F\x92\xA9" "\xF0\x9F\x93\xB7" // 68 "\xF0\x9F\x93\xA6" // 69 "\xF0\x9F\x87\xBA" "\xF0\x9F\x87\xB8" "\xF0\x9F\x87\xA6"; // 70 #else 71 return "Hamburgefons"; 72 #endif 73 } 74 75 static bool extra_config_contains(const char* substring) { 76 for (int index = 0; index < FLAGS_key.count(); index += 2) { 77 if (0 == strcmp("extra_config", FLAGS_key[index]) 78 && strstr(FLAGS_key[index + 1], substring)) { 79 return true; 80 } 81 } 82 return false; 83 } 84 85 const char* platform_font_manager() { 86 if (extra_config_contains("GDI")) { 87 return "GDI"; 88 } 89 if (extra_config_contains("NativeFonts")){ 90 return platform_os_name(); 91 } 92 return ""; 93 } 94 95 96 const char* colortype_name(SkColorType ct) { 97 switch (ct) { 98 case kUnknown_SkColorType: return "Unknown"; 99 case kAlpha_8_SkColorType: return "Alpha_8"; 100 case kARGB_4444_SkColorType: return "ARGB_4444"; 101 case kRGB_565_SkColorType: return "RGB_565"; 102 case kRGBA_8888_SkColorType: return "RGBA_8888"; 103 case kBGRA_8888_SkColorType: return "BGRA_8888"; 104 case kRGBA_F16_SkColorType: return "RGBA_F16"; 105 default: 106 SkASSERT(false); 107 return "unexpected colortype"; 108 } 109 } 110 111 SkColor color_to_565(SkColor color) { 112 SkPMColor pmColor = SkPreMultiplyColor(color); 113 U16CPU color16 = SkPixel32ToPixel16(pmColor); 114 return SkPixel16ToColor(color16); 115 } 116 117 sk_sp<SkTypeface> create_portable_typeface(const char* name, SkFontStyle style) { 118 return create_font(name, style); 119 } 120 121 void set_portable_typeface(SkPaint* paint, const char* name, SkFontStyle style) { 122 paint->setTypeface(create_font(name, style)); 123 } 124 125 void write_pixels(SkCanvas* canvas, const SkBitmap& bitmap, int x, int y, 126 SkColorType colorType, SkAlphaType alphaType) { 127 SkBitmap tmp(bitmap); 128 const SkImageInfo info = SkImageInfo::Make(tmp.width(), tmp.height(), colorType, alphaType); 129 130 canvas->writePixels(info, tmp.getPixels(), tmp.rowBytes(), x, y); 131 } 132 133 sk_sp<SkShader> create_checkerboard_shader(SkColor c1, SkColor c2, int size) { 134 SkBitmap bm; 135 bm.allocPixels(SkImageInfo::MakeS32(2 * size, 2 * size, kPremul_SkAlphaType)); 136 bm.eraseColor(c1); 137 bm.eraseArea(SkIRect::MakeLTRB(0, 0, size, size), c2); 138 bm.eraseArea(SkIRect::MakeLTRB(size, size, 2 * size, 2 * size), c2); 139 return SkShader::MakeBitmapShader( 140 bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode); 141 } 142 143 SkBitmap create_checkerboard_bitmap(int w, int h, SkColor c1, SkColor c2, int checkSize) { 144 SkBitmap bitmap; 145 bitmap.allocPixels(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType)); 146 SkCanvas canvas(bitmap); 147 148 sk_tool_utils::draw_checkerboard(&canvas, c1, c2, checkSize); 149 return bitmap; 150 } 151 152 void draw_checkerboard(SkCanvas* canvas, SkColor c1, SkColor c2, int size) { 153 SkPaint paint; 154 paint.setShader(create_checkerboard_shader(c1, c2, size)); 155 paint.setBlendMode(SkBlendMode::kSrc); 156 canvas->drawPaint(paint); 157 } 158 159 SkBitmap create_string_bitmap(int w, int h, SkColor c, int x, int y, 160 int textSize, const char* str) { 161 SkBitmap bitmap; 162 bitmap.allocN32Pixels(w, h); 163 SkCanvas canvas(bitmap); 164 165 SkPaint paint; 166 paint.setAntiAlias(true); 167 sk_tool_utils::set_portable_typeface(&paint); 168 paint.setColor(c); 169 paint.setTextSize(SkIntToScalar(textSize)); 170 171 canvas.clear(0x00000000); 172 canvas.drawString(str, SkIntToScalar(x), SkIntToScalar(y), paint); 173 174 // Tag data as sRGB (without doing any color space conversion). Color-space aware configs 175 // will process this correctly but legacy configs will render as if this returned N32. 176 SkBitmap result; 177 result.setInfo(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType)); 178 result.setPixelRef(sk_ref_sp(bitmap.pixelRef()), 0, 0); 179 return result; 180 } 181 182 void add_to_text_blob_w_len(SkTextBlobBuilder* builder, const char* text, size_t len, 183 const SkPaint& origPaint, SkScalar x, SkScalar y) { 184 SkPaint paint(origPaint); 185 SkTDArray<uint16_t> glyphs; 186 187 glyphs.append(paint.textToGlyphs(text, len, nullptr)); 188 paint.textToGlyphs(text, len, glyphs.begin()); 189 190 paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); 191 const SkTextBlobBuilder::RunBuffer& run = builder->allocRun(paint, glyphs.count(), x, y, 192 nullptr); 193 memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t)); 194 } 195 196 void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, 197 const SkPaint& origPaint, SkScalar x, SkScalar y) { 198 add_to_text_blob_w_len(builder, text, strlen(text), origPaint, x, y); 199 } 200 201 SkPath make_star(const SkRect& bounds, int numPts, int step) { 202 SkPath path; 203 path.setFillType(SkPath::kEvenOdd_FillType); 204 path.moveTo(0,-1); 205 for (int i = 1; i < numPts; ++i) { 206 int idx = i*step; 207 SkScalar theta = idx * 2*SK_ScalarPI/numPts + SK_ScalarPI/2; 208 SkScalar x = SkScalarCos(theta); 209 SkScalar y = -SkScalarSin(theta); 210 path.lineTo(x, y); 211 } 212 path.transform(SkMatrix::MakeRectToRect(path.getBounds(), bounds, SkMatrix::kFill_ScaleToFit)); 213 return path; 214 } 215 216 #if !defined(__clang__) && defined(_MSC_VER) 217 // MSVC takes ~2 minutes to compile this function with optimization. 218 // We don't really care to wait that long for this function. 219 #pragma optimize("", off) 220 #endif 221 void make_big_path(SkPath& path) { 222 #include "BigPathBench.inc" 223 } 224 225 static float gaussian2d_value(int x, int y, float sigma) { 226 // don't bother with the scale term since we're just going to normalize the 227 // kernel anyways 228 float temp = expf(-(x*x + y*y)/(2*sigma*sigma)); 229 return temp; 230 } 231 232 static float* create_2d_kernel(float sigma, int* filterSize) { 233 // We will actually take 2*halfFilterSize+1 samples (i.e., our filter kernel 234 // sizes are always odd) 235 int halfFilterSize = SkScalarCeilToInt(6*sigma)/2; 236 int wh = *filterSize = 2*halfFilterSize + 1; 237 238 float* temp = new float[wh*wh]; 239 240 float filterTot = 0.0f; 241 for (int yOff = 0; yOff < wh; ++yOff) { 242 for (int xOff = 0; xOff < wh; ++xOff) { 243 temp[yOff*wh+xOff] = gaussian2d_value(xOff-halfFilterSize, yOff-halfFilterSize, sigma); 244 245 filterTot += temp[yOff*wh+xOff]; 246 } 247 } 248 249 // normalize the kernel 250 for (int yOff = 0; yOff < wh; ++yOff) { 251 for (int xOff = 0; xOff < wh; ++xOff) { 252 temp[yOff*wh+xOff] /= filterTot; 253 } 254 } 255 256 return temp; 257 } 258 259 static SkPMColor blur_pixel(const SkBitmap& bm, int x, int y, float* kernel, int wh) { 260 SkASSERT(wh & 0x1); 261 262 int halfFilterSize = (wh-1)/2; 263 264 float r = 0.0f, g = 0.0f, b = 0.0f; 265 for (int yOff = 0; yOff < wh; ++yOff) { 266 int ySamp = y + yOff - halfFilterSize; 267 268 if (ySamp < 0) { 269 ySamp = 0; 270 } else if (ySamp > bm.height()-1) { 271 ySamp = bm.height()-1; 272 } 273 274 for (int xOff = 0; xOff < wh; ++xOff) { 275 int xSamp = x + xOff - halfFilterSize; 276 277 if (xSamp < 0) { 278 xSamp = 0; 279 } else if (xSamp > bm.width()-1) { 280 xSamp = bm.width()-1; 281 } 282 283 float filter = kernel[yOff*wh + xOff]; 284 285 SkPMColor c = *bm.getAddr32(xSamp, ySamp); 286 287 r += SkGetPackedR32(c) * filter; 288 g += SkGetPackedG32(c) * filter; 289 b += SkGetPackedB32(c) * filter; 290 } 291 } 292 293 U8CPU r8, g8, b8; 294 295 r8 = (U8CPU) (r+0.5f); 296 g8 = (U8CPU) (g+0.5f); 297 b8 = (U8CPU) (b+0.5f); 298 299 return SkPackARGB32(255, r8, g8, b8); 300 } 301 302 SkBitmap slow_blur(const SkBitmap& src, float sigma) { 303 SkBitmap dst; 304 305 dst.allocN32Pixels(src.width(), src.height(), true); 306 307 int wh; 308 std::unique_ptr<float[]> kernel(create_2d_kernel(sigma, &wh)); 309 310 for (int y = 0; y < src.height(); ++y) { 311 for (int x = 0; x < src.width(); ++x) { 312 *dst.getAddr32(x, y) = blur_pixel(src, x, y, kernel.get(), wh); 313 } 314 } 315 316 return dst; 317 } 318 319 // compute the intersection point between the diagonal and the ellipse in the 320 // lower right corner 321 static SkPoint intersection(SkScalar w, SkScalar h) { 322 SkASSERT(w > 0.0f || h > 0.0f); 323 324 return SkPoint::Make(w / SK_ScalarSqrt2, h / SK_ScalarSqrt2); 325 } 326 327 // Use the intersection of the corners' diagonals with their ellipses to shrink 328 // the bounding rect 329 SkRect compute_central_occluder(const SkRRect& rr) { 330 const SkRect r = rr.getBounds(); 331 332 SkScalar newL = r.fLeft, newT = r.fTop, newR = r.fRight, newB = r.fBottom; 333 334 SkVector radii = rr.radii(SkRRect::kUpperLeft_Corner); 335 if (!radii.isZero()) { 336 SkPoint p = intersection(radii.fX, radii.fY); 337 338 newL = SkTMax(newL, r.fLeft + radii.fX - p.fX); 339 newT = SkTMax(newT, r.fTop + radii.fY - p.fY); 340 } 341 342 radii = rr.radii(SkRRect::kUpperRight_Corner); 343 if (!radii.isZero()) { 344 SkPoint p = intersection(radii.fX, radii.fY); 345 346 newR = SkTMin(newR, r.fRight + p.fX - radii.fX); 347 newT = SkTMax(newT, r.fTop + radii.fY - p.fY); 348 } 349 350 radii = rr.radii(SkRRect::kLowerRight_Corner); 351 if (!radii.isZero()) { 352 SkPoint p = intersection(radii.fX, radii.fY); 353 354 newR = SkTMin(newR, r.fRight + p.fX - radii.fX); 355 newB = SkTMin(newB, r.fBottom - radii.fY + p.fY); 356 } 357 358 radii = rr.radii(SkRRect::kLowerLeft_Corner); 359 if (!radii.isZero()) { 360 SkPoint p = intersection(radii.fX, radii.fY); 361 362 newL = SkTMax(newL, r.fLeft + radii.fX - p.fX); 363 newB = SkTMin(newB, r.fBottom - radii.fY + p.fY); 364 } 365 366 return SkRect::MakeLTRB(newL, newT, newR, newB); 367 } 368 369 // The widest inset rect 370 SkRect compute_widest_occluder(const SkRRect& rr) { 371 const SkRect& r = rr.getBounds(); 372 373 const SkVector& ul = rr.radii(SkRRect::kUpperLeft_Corner); 374 const SkVector& ur = rr.radii(SkRRect::kUpperRight_Corner); 375 const SkVector& lr = rr.radii(SkRRect::kLowerRight_Corner); 376 const SkVector& ll = rr.radii(SkRRect::kLowerLeft_Corner); 377 378 SkScalar maxT = SkTMax(ul.fY, ur.fY); 379 SkScalar maxB = SkTMax(ll.fY, lr.fY); 380 381 return SkRect::MakeLTRB(r.fLeft, r.fTop + maxT, r.fRight, r.fBottom - maxB); 382 383 } 384 385 // The tallest inset rect 386 SkRect compute_tallest_occluder(const SkRRect& rr) { 387 const SkRect& r = rr.getBounds(); 388 389 const SkVector& ul = rr.radii(SkRRect::kUpperLeft_Corner); 390 const SkVector& ur = rr.radii(SkRRect::kUpperRight_Corner); 391 const SkVector& lr = rr.radii(SkRRect::kLowerRight_Corner); 392 const SkVector& ll = rr.radii(SkRRect::kLowerLeft_Corner); 393 394 SkScalar maxL = SkTMax(ul.fX, ll.fX); 395 SkScalar maxR = SkTMax(ur.fX, lr.fX); 396 397 return SkRect::MakeLTRB(r.fLeft + maxL, r.fTop, r.fRight - maxR, r.fBottom); 398 } 399 400 bool copy_to(SkBitmap* dst, SkColorType dstColorType, const SkBitmap& src) { 401 SkPixmap srcPM; 402 if (!src.peekPixels(&srcPM)) { 403 return false; 404 } 405 406 SkBitmap tmpDst; 407 SkImageInfo dstInfo = srcPM.info().makeColorType(dstColorType); 408 if (!tmpDst.setInfo(dstInfo)) { 409 return false; 410 } 411 412 if (!tmpDst.tryAllocPixels()) { 413 return false; 414 } 415 416 SkPixmap dstPM; 417 if (!tmpDst.peekPixels(&dstPM)) { 418 return false; 419 } 420 421 if (!srcPM.readPixels(dstPM)) { 422 return false; 423 } 424 425 dst->swap(tmpDst); 426 return true; 427 } 428 429 void copy_to_g8(SkBitmap* dst, const SkBitmap& src) { 430 SkASSERT(kBGRA_8888_SkColorType == src.colorType() || 431 kRGBA_8888_SkColorType == src.colorType()); 432 433 SkImageInfo grayInfo = src.info().makeColorType(kGray_8_SkColorType); 434 dst->allocPixels(grayInfo); 435 uint8_t* dst8 = (uint8_t*)dst->getPixels(); 436 const uint32_t* src32 = (const uint32_t*)src.getPixels(); 437 438 const int w = src.width(); 439 const int h = src.height(); 440 const bool isBGRA = (kBGRA_8888_SkColorType == src.colorType()); 441 for (int y = 0; y < h; ++y) { 442 if (isBGRA) { 443 // BGRA 444 for (int x = 0; x < w; ++x) { 445 uint32_t s = src32[x]; 446 dst8[x] = SkComputeLuminance((s >> 16) & 0xFF, (s >> 8) & 0xFF, s & 0xFF); 447 } 448 } else { 449 // RGBA 450 for (int x = 0; x < w; ++x) { 451 uint32_t s = src32[x]; 452 dst8[x] = SkComputeLuminance(s & 0xFF, (s >> 8) & 0xFF, (s >> 16) & 0xFF); 453 } 454 } 455 src32 = (const uint32_t*)((const char*)src32 + src.rowBytes()); 456 dst8 += dst->rowBytes(); 457 } 458 } 459 460 ////////////////////////////////////////////////////////////////////////////////////////////// 461 462 static int scale255(float x) { 463 return sk_float_round2int(x * 255); 464 } 465 466 static unsigned diff(const SkColorType ct, const void* a, const void* b) { 467 int dr = 0, 468 dg = 0, 469 db = 0, 470 da = 0; 471 switch (ct) { 472 case kRGBA_8888_SkColorType: 473 case kBGRA_8888_SkColorType: { 474 SkPMColor c0 = *(const SkPMColor*)a; 475 SkPMColor c1 = *(const SkPMColor*)b; 476 dr = SkGetPackedR32(c0) - SkGetPackedR32(c1); 477 dg = SkGetPackedG32(c0) - SkGetPackedG32(c1); 478 db = SkGetPackedB32(c0) - SkGetPackedB32(c1); 479 da = SkGetPackedA32(c0) - SkGetPackedA32(c1); 480 } break; 481 case kRGB_565_SkColorType: { 482 uint16_t c0 = *(const uint16_t*)a; 483 uint16_t c1 = *(const uint16_t*)b; 484 dr = SkGetPackedR16(c0) - SkGetPackedR16(c1); 485 dg = SkGetPackedG16(c0) - SkGetPackedG16(c1); 486 db = SkGetPackedB16(c0) - SkGetPackedB16(c1); 487 } break; 488 case kARGB_4444_SkColorType: { 489 uint16_t c0 = *(const uint16_t*)a; 490 uint16_t c1 = *(const uint16_t*)b; 491 dr = SkGetPackedR4444(c0) - SkGetPackedR4444(c1); 492 dg = SkGetPackedG4444(c0) - SkGetPackedG4444(c1); 493 db = SkGetPackedB4444(c0) - SkGetPackedB4444(c1); 494 da = SkGetPackedA4444(c0) - SkGetPackedA4444(c1); 495 } break; 496 case kAlpha_8_SkColorType: 497 case kGray_8_SkColorType: 498 da = (const uint8_t*)a - (const uint8_t*)b; 499 break; 500 case kRGBA_F16_SkColorType: { 501 const SkPM4f* c0 = (const SkPM4f*)a; 502 const SkPM4f* c1 = (const SkPM4f*)b; 503 dr = scale255(c0->r() - c1->r()); 504 dg = scale255(c0->g() - c1->g()); 505 db = scale255(c0->b() - c1->b()); 506 da = scale255(c0->a() - c1->a()); 507 } break; 508 default: 509 return 0; 510 } 511 dr = SkAbs32(dr); 512 dg = SkAbs32(dg); 513 db = SkAbs32(db); 514 da = SkAbs32(da); 515 return SkMax32(dr, SkMax32(dg, SkMax32(db, da))); 516 } 517 518 bool equal_pixels(const SkPixmap& a, const SkPixmap& b, unsigned maxDiff, 519 bool respectColorSpace) { 520 if (a.width() != b.width() || 521 a.height() != b.height() || 522 a.colorType() != b.colorType() || 523 (respectColorSpace && (a.colorSpace() != b.colorSpace()))) 524 { 525 return false; 526 } 527 528 for (int y = 0; y < a.height(); ++y) { 529 const char* aptr = (const char*)a.addr(0, y); 530 const char* bptr = (const char*)b.addr(0, y); 531 if (memcmp(aptr, bptr, a.width() * a.info().bytesPerPixel())) { 532 for (int x = 0; x < a.width(); ++x) { 533 if (diff(a.colorType(), a.addr(x, y), b.addr(x, y)) > maxDiff) { 534 return false; 535 } 536 } 537 } 538 aptr += a.rowBytes(); 539 bptr += b.rowBytes(); 540 } 541 return true; 542 } 543 544 bool equal_pixels(const SkBitmap& bm0, const SkBitmap& bm1, unsigned maxDiff, 545 bool respectColorSpaces) { 546 SkPixmap pm0, pm1; 547 return bm0.peekPixels(&pm0) && bm1.peekPixels(&pm1) && 548 equal_pixels(pm0, pm1, maxDiff, respectColorSpaces); 549 } 550 551 bool equal_pixels(const SkImage* a, const SkImage* b, unsigned maxDiff, 552 bool respectColorSpaces) { 553 // ensure that peekPixels will succeed 554 auto imga = a->makeRasterImage(); 555 auto imgb = b->makeRasterImage(); 556 a = imga.get(); 557 b = imgb.get(); 558 559 SkPixmap pm0, pm1; 560 return a->peekPixels(&pm0) && b->peekPixels(&pm1) && 561 equal_pixels(pm0, pm1, maxDiff, respectColorSpaces); 562 } 563 564 sk_sp<SkSurface> makeSurface(SkCanvas* canvas, const SkImageInfo& info, 565 const SkSurfaceProps* props) { 566 auto surf = canvas->makeSurface(info, props); 567 if (!surf) { 568 surf = SkSurface::MakeRaster(info, props); 569 } 570 return surf; 571 } 572 } // namespace sk_tool_utils 573
