1/* 2 * Copyright 2011 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 "SkCanvas.h" 9#include "SkColorData.h" 10#include "SkHalf.h" 11#include "SkImageInfoPriv.h" 12#include "SkMathPriv.h" 13#include "SkSurface.h" 14#include "Test.h" 15 16#if SK_SUPPORT_GPU 17#include "GrContext.h" 18#include "GrContextFactory.h" 19#include "GrContextPriv.h" 20#include "GrProxyProvider.h" 21#include "SkGr.h" 22#endif 23 24#include <initializer_list> 25 26static const int DEV_W = 100, DEV_H = 100; 27static const SkIRect DEV_RECT = SkIRect::MakeWH(DEV_W, DEV_H); 28static const SkRect DEV_RECT_S = SkRect::MakeWH(DEV_W * SK_Scalar1, 29 DEV_H * SK_Scalar1); 30 31static SkPMColor get_src_color(int x, int y) { 32 SkASSERT(x >= 0 && x < DEV_W); 33 SkASSERT(y >= 0 && y < DEV_H); 34 35 U8CPU r = x; 36 U8CPU g = y; 37 U8CPU b = 0xc; 38 39 U8CPU a = 0xff; 40 switch ((x+y) % 5) { 41 case 0: 42 a = 0xff; 43 break; 44 case 1: 45 a = 0x80; 46 break; 47 case 2: 48 a = 0xCC; 49 break; 50 case 4: 51 a = 0x01; 52 break; 53 case 3: 54 a = 0x00; 55 break; 56 } 57 return SkPremultiplyARGBInline(a, r, g, b); 58} 59 60static SkPMColor get_dst_bmp_init_color(int x, int y, int w) { 61 int n = y * w + x; 62 63 U8CPU b = n & 0xff; 64 U8CPU g = (n >> 8) & 0xff; 65 U8CPU r = (n >> 16) & 0xff; 66 return SkPackARGB32(0xff, r, g , b); 67} 68 69static SkPMColor convert_to_pmcolor(SkColorType ct, SkAlphaType at, const uint32_t* addr, 70 bool* doUnpremul) { 71 *doUnpremul = (kUnpremul_SkAlphaType == at); 72 73 const uint8_t* c = reinterpret_cast<const uint8_t*>(addr); 74 U8CPU a,r,g,b; 75 switch (ct) { 76 case kBGRA_8888_SkColorType: 77 b = static_cast<U8CPU>(c[0]); 78 g = static_cast<U8CPU>(c[1]); 79 r = static_cast<U8CPU>(c[2]); 80 a = static_cast<U8CPU>(c[3]); 81 break; 82 case kRGBA_8888_SkColorType: 83 r = static_cast<U8CPU>(c[0]); 84 g = static_cast<U8CPU>(c[1]); 85 b = static_cast<U8CPU>(c[2]); 86 a = static_cast<U8CPU>(c[3]); 87 break; 88 default: 89 SkDEBUGFAIL("Unexpected colortype"); 90 return 0; 91 } 92 93 if (*doUnpremul) { 94 r = SkMulDiv255Ceiling(r, a); 95 g = SkMulDiv255Ceiling(g, a); 96 b = SkMulDiv255Ceiling(b, a); 97 } 98 return SkPackARGB32(a, r, g, b); 99} 100 101static SkBitmap make_src_bitmap() { 102 static SkBitmap bmp; 103 if (bmp.isNull()) { 104 bmp.allocN32Pixels(DEV_W, DEV_H); 105 intptr_t pixels = reinterpret_cast<intptr_t>(bmp.getPixels()); 106 for (int y = 0; y < DEV_H; ++y) { 107 for (int x = 0; x < DEV_W; ++x) { 108 SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bmp.rowBytes() + x * bmp.bytesPerPixel()); 109 *pixel = get_src_color(x, y); 110 } 111 } 112 } 113 return bmp; 114} 115 116static void fill_src_canvas(SkCanvas* canvas) { 117 canvas->save(); 118 canvas->setMatrix(SkMatrix::I()); 119 canvas->clipRect(DEV_RECT_S, kReplace_SkClipOp); 120 SkPaint paint; 121 paint.setBlendMode(SkBlendMode::kSrc); 122 canvas->drawBitmap(make_src_bitmap(), 0, 0, &paint); 123 canvas->restore(); 124} 125 126static void fill_dst_bmp_with_init_data(SkBitmap* bitmap) { 127 int w = bitmap->width(); 128 int h = bitmap->height(); 129 intptr_t pixels = reinterpret_cast<intptr_t>(bitmap->getPixels()); 130 for (int y = 0; y < h; ++y) { 131 for (int x = 0; x < w; ++x) { 132 SkPMColor initColor = get_dst_bmp_init_color(x, y, w); 133 if (kAlpha_8_SkColorType == bitmap->colorType()) { 134 uint8_t* alpha = reinterpret_cast<uint8_t*>(pixels + y * bitmap->rowBytes() + x); 135 *alpha = SkGetPackedA32(initColor); 136 } else { 137 SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bitmap->rowBytes() + x * bitmap->bytesPerPixel()); 138 *pixel = initColor; 139 } 140 } 141 } 142} 143 144static bool check_read_pixel(SkPMColor a, SkPMColor b, bool didPremulConversion) { 145 if (!didPremulConversion) { 146 return a == b; 147 } 148 int32_t aA = static_cast<int32_t>(SkGetPackedA32(a)); 149 int32_t aR = static_cast<int32_t>(SkGetPackedR32(a)); 150 int32_t aG = static_cast<int32_t>(SkGetPackedG32(a)); 151 int32_t aB = SkGetPackedB32(a); 152 153 int32_t bA = static_cast<int32_t>(SkGetPackedA32(b)); 154 int32_t bR = static_cast<int32_t>(SkGetPackedR32(b)); 155 int32_t bG = static_cast<int32_t>(SkGetPackedG32(b)); 156 int32_t bB = static_cast<int32_t>(SkGetPackedB32(b)); 157 158 return aA == bA && 159 SkAbs32(aR - bR) <= 1 && 160 SkAbs32(aG - bG) <= 1 && 161 SkAbs32(aB - bB) <= 1; 162} 163 164// checks the bitmap contains correct pixels after the readPixels 165// if the bitmap was prefilled with pixels it checks that these weren't 166// overwritten in the area outside the readPixels. 167static bool check_read(skiatest::Reporter* reporter, 168 const SkBitmap& bitmap, 169 int x, int y, 170 bool checkCanvasPixels, 171 bool checkBitmapPixels, 172 SkColorType ct, 173 SkAlphaType at) { 174 SkASSERT(ct == bitmap.colorType() && at == bitmap.alphaType()); 175 SkASSERT(!bitmap.isNull()); 176 SkASSERT(checkCanvasPixels || checkBitmapPixels); 177 178 int bw = bitmap.width(); 179 int bh = bitmap.height(); 180 181 SkIRect srcRect = SkIRect::MakeXYWH(x, y, bw, bh); 182 SkIRect clippedSrcRect = DEV_RECT; 183 if (!clippedSrcRect.intersect(srcRect)) { 184 clippedSrcRect.setEmpty(); 185 } 186 if (kAlpha_8_SkColorType == ct) { 187 for (int by = 0; by < bh; ++by) { 188 for (int bx = 0; bx < bw; ++bx) { 189 int devx = bx + srcRect.fLeft; 190 int devy = by + srcRect.fTop; 191 const uint8_t* alpha = bitmap.getAddr8(bx, by); 192 193 if (clippedSrcRect.contains(devx, devy)) { 194 if (checkCanvasPixels) { 195 uint8_t canvasAlpha = SkGetPackedA32(get_src_color(devx, devy)); 196 if (canvasAlpha != *alpha) { 197 ERRORF(reporter, "Expected readback alpha (%d, %d) value 0x%02x, got 0x%02x. ", 198 bx, by, canvasAlpha, *alpha); 199 return false; 200 } 201 } 202 } else if (checkBitmapPixels) { 203 uint32_t origDstAlpha = SkGetPackedA32(get_dst_bmp_init_color(bx, by, bw)); 204 if (origDstAlpha != *alpha) { 205 ERRORF(reporter, "Expected clipped out area of readback to be unchanged. " 206 "Expected 0x%02x, got 0x%02x", origDstAlpha, *alpha); 207 return false; 208 } 209 } 210 } 211 } 212 return true; 213 } 214 for (int by = 0; by < bh; ++by) { 215 for (int bx = 0; bx < bw; ++bx) { 216 int devx = bx + srcRect.fLeft; 217 int devy = by + srcRect.fTop; 218 219 const uint32_t* pixel = bitmap.getAddr32(bx, by); 220 221 if (clippedSrcRect.contains(devx, devy)) { 222 if (checkCanvasPixels) { 223 SkPMColor canvasPixel = get_src_color(devx, devy); 224 bool didPremul; 225 SkPMColor pmPixel = convert_to_pmcolor(ct, at, pixel, &didPremul); 226 if (!check_read_pixel(pmPixel, canvasPixel, didPremul)) { 227 ERRORF(reporter, "Expected readback pixel (%d, %d) value 0x%08x, got 0x%08x. " 228 "Readback was unpremul: %d", bx, by, canvasPixel, pmPixel, didPremul); 229 return false; 230 } 231 } 232 } else if (checkBitmapPixels) { 233 uint32_t origDstPixel = get_dst_bmp_init_color(bx, by, bw); 234 if (origDstPixel != *pixel) { 235 ERRORF(reporter, "Expected clipped out area of readback to be unchanged. " 236 "Expected 0x%08x, got 0x%08x", origDstPixel, *pixel); 237 return false; 238 } 239 } 240 } 241 } 242 return true; 243} 244 245enum BitmapInit { 246 kFirstBitmapInit = 0, 247 248 kTight_BitmapInit = kFirstBitmapInit, 249 kRowBytes_BitmapInit, 250 kRowBytesOdd_BitmapInit, 251 252 kLastAligned_BitmapInit = kRowBytes_BitmapInit, 253 254#if 0 // THIS CAUSES ERRORS ON WINDOWS AND SOME ANDROID DEVICES 255 kLast_BitmapInit = kRowBytesOdd_BitmapInit 256#else 257 kLast_BitmapInit = kLastAligned_BitmapInit 258#endif 259}; 260 261static BitmapInit nextBMI(BitmapInit bmi) { 262 int x = bmi; 263 return static_cast<BitmapInit>(++x); 264} 265 266static void init_bitmap(SkBitmap* bitmap, const SkIRect& rect, BitmapInit init, SkColorType ct, 267 SkAlphaType at) { 268 SkImageInfo info = SkImageInfo::Make(rect.width(), rect.height(), ct, at); 269 size_t rowBytes = 0; 270 switch (init) { 271 case kTight_BitmapInit: 272 break; 273 case kRowBytes_BitmapInit: 274 rowBytes = SkAlign4((info.width() + 16) * info.bytesPerPixel()); 275 break; 276 case kRowBytesOdd_BitmapInit: 277 rowBytes = SkAlign4(info.width() * info.bytesPerPixel()) + 3; 278 break; 279 default: 280 SkASSERT(0); 281 break; 282 } 283 bitmap->allocPixels(info, rowBytes); 284} 285 286static const struct { 287 SkColorType fColorType; 288 SkAlphaType fAlphaType; 289} gReadPixelsConfigs[] = { 290 { kRGBA_8888_SkColorType, kPremul_SkAlphaType }, 291 { kRGBA_8888_SkColorType, kUnpremul_SkAlphaType }, 292 { kBGRA_8888_SkColorType, kPremul_SkAlphaType }, 293 { kBGRA_8888_SkColorType, kUnpremul_SkAlphaType }, 294 { kAlpha_8_SkColorType, kPremul_SkAlphaType }, 295}; 296const SkIRect gReadPixelsTestRects[] = { 297 // entire thing 298 DEV_RECT, 299 // larger on all sides 300 SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H + 10), 301 // fully contained 302 SkIRect::MakeLTRB(DEV_W / 4, DEV_H / 4, 3 * DEV_W / 4, 3 * DEV_H / 4), 303 // outside top left 304 SkIRect::MakeLTRB(-10, -10, -1, -1), 305 // touching top left corner 306 SkIRect::MakeLTRB(-10, -10, 0, 0), 307 // overlapping top left corner 308 SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H / 4), 309 // overlapping top left and top right corners 310 SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H / 4), 311 // touching entire top edge 312 SkIRect::MakeLTRB(-10, -10, DEV_W + 10, 0), 313 // overlapping top right corner 314 SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H / 4), 315 // contained in x, overlapping top edge 316 SkIRect::MakeLTRB(DEV_W / 4, -10, 3 * DEV_W / 4, DEV_H / 4), 317 // outside top right corner 318 SkIRect::MakeLTRB(DEV_W + 1, -10, DEV_W + 10, -1), 319 // touching top right corner 320 SkIRect::MakeLTRB(DEV_W, -10, DEV_W + 10, 0), 321 // overlapping top left and bottom left corners 322 SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H + 10), 323 // touching entire left edge 324 SkIRect::MakeLTRB(-10, -10, 0, DEV_H + 10), 325 // overlapping bottom left corner 326 SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W / 4, DEV_H + 10), 327 // contained in y, overlapping left edge 328 SkIRect::MakeLTRB(-10, DEV_H / 4, DEV_W / 4, 3 * DEV_H / 4), 329 // outside bottom left corner 330 SkIRect::MakeLTRB(-10, DEV_H + 1, -1, DEV_H + 10), 331 // touching bottom left corner 332 SkIRect::MakeLTRB(-10, DEV_H, 0, DEV_H + 10), 333 // overlapping bottom left and bottom right corners 334 SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10), 335 // touching entire left edge 336 SkIRect::MakeLTRB(0, DEV_H, DEV_W, DEV_H + 10), 337 // overlapping bottom right corner 338 SkIRect::MakeLTRB(3 * DEV_W / 4, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10), 339 // overlapping top right and bottom right corners 340 SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H + 10), 341}; 342 343static void test_readpixels(skiatest::Reporter* reporter, const sk_sp<SkSurface>& surface, 344 BitmapInit lastBitmapInit) { 345 SkCanvas* canvas = surface->getCanvas(); 346 fill_src_canvas(canvas); 347 for (size_t rect = 0; rect < SK_ARRAY_COUNT(gReadPixelsTestRects); ++rect) { 348 const SkIRect& srcRect = gReadPixelsTestRects[rect]; 349 for (BitmapInit bmi = kFirstBitmapInit; bmi <= lastBitmapInit; bmi = nextBMI(bmi)) { 350 for (size_t c = 0; c < SK_ARRAY_COUNT(gReadPixelsConfigs); ++c) { 351 SkBitmap bmp; 352 init_bitmap(&bmp, srcRect, bmi, 353 gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType); 354 355 // if the bitmap has pixels allocated before the readPixels, 356 // note that and fill them with pattern 357 bool startsWithPixels = !bmp.isNull(); 358 if (startsWithPixels) { 359 fill_dst_bmp_with_init_data(&bmp); 360 } 361 uint32_t idBefore = surface->generationID(); 362 bool success = surface->readPixels(bmp, srcRect.fLeft, srcRect.fTop); 363 uint32_t idAfter = surface->generationID(); 364 365 // we expect to succeed when the read isn't fully clipped 366 // out. 367 bool expectSuccess = SkIRect::Intersects(srcRect, DEV_RECT); 368 // determine whether we expected the read to succeed. 369 REPORTER_ASSERT(reporter, success == expectSuccess); 370 // read pixels should never change the gen id 371 REPORTER_ASSERT(reporter, idBefore == idAfter); 372 373 if (success || startsWithPixels) { 374 check_read(reporter, bmp, srcRect.fLeft, srcRect.fTop, 375 success, startsWithPixels, 376 gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType); 377 } else { 378 // if we had no pixels beforehand and the readPixels 379 // failed then our bitmap should still not have pixels 380 REPORTER_ASSERT(reporter, bmp.isNull()); 381 } 382 } 383 } 384 } 385} 386DEF_TEST(ReadPixels, reporter) { 387 const SkImageInfo info = SkImageInfo::MakeN32Premul(DEV_W, DEV_H); 388 auto surface(SkSurface::MakeRaster(info)); 389 // SW readback fails a premul check when reading back to an unaligned rowbytes. 390 test_readpixels(reporter, surface, kLastAligned_BitmapInit); 391} 392#if SK_SUPPORT_GPU 393DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadPixels_Gpu, reporter, ctxInfo) { 394 if (ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_D3D9_ES2_ContextType || 395 ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_GL_ES2_ContextType || 396 ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_D3D11_ES2_ContextType) { 397 // skbug.com/6742 ReadPixels_Texture & _Gpu don't work with ANGLE ES2 configs 398 return; 399 } 400 401 const SkImageInfo ii = SkImageInfo::MakeN32Premul(DEV_W, DEV_H); 402 for (auto& origin : {kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin}) { 403 sk_sp<SkSurface> surface(SkSurface::MakeRenderTarget(ctxInfo.grContext(), SkBudgeted::kNo, 404 ii, 0, origin, nullptr)); 405 test_readpixels(reporter, surface, kLast_BitmapInit); 406 } 407} 408#endif 409 410#if SK_SUPPORT_GPU 411static void test_readpixels_texture(skiatest::Reporter* reporter, 412 sk_sp<GrSurfaceContext> sContext) { 413 for (size_t rect = 0; rect < SK_ARRAY_COUNT(gReadPixelsTestRects); ++rect) { 414 const SkIRect& srcRect = gReadPixelsTestRects[rect]; 415 for (BitmapInit bmi = kFirstBitmapInit; bmi <= kLast_BitmapInit; bmi = nextBMI(bmi)) { 416 for (size_t c = 0; c < SK_ARRAY_COUNT(gReadPixelsConfigs); ++c) { 417 SkBitmap bmp; 418 init_bitmap(&bmp, srcRect, bmi, 419 gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType); 420 421 // if the bitmap has pixels allocated before the readPixels, 422 // note that and fill them with pattern 423 bool startsWithPixels = !bmp.isNull(); 424 // Try doing the read directly from a non-renderable texture 425 if (startsWithPixels) { 426 fill_dst_bmp_with_init_data(&bmp); 427 uint32_t flags = 0; 428 if (gReadPixelsConfigs[c].fAlphaType == kUnpremul_SkAlphaType) { 429 flags = GrContextPriv::kUnpremul_PixelOpsFlag; 430 } 431 bool success = sContext->readPixels(bmp.info(), bmp.getPixels(), 432 bmp.rowBytes(), 433 srcRect.fLeft, srcRect.fTop, flags); 434 check_read(reporter, bmp, srcRect.fLeft, srcRect.fTop, 435 success, true, 436 gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType); 437 } 438 } 439 } 440 } 441} 442 443DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadPixels_Texture, reporter, ctxInfo) { 444 if (ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_D3D9_ES2_ContextType || 445 ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_GL_ES2_ContextType || 446 ctxInfo.type() == sk_gpu_test::GrContextFactory::kANGLE_D3D11_ES2_ContextType) { 447 // skbug.com/6742 ReadPixels_Texture & _Gpu don't work with ANGLE ES2 configs 448 return; 449 } 450 451 GrContext* context = ctxInfo.grContext(); 452 GrProxyProvider* proxyProvider = context->contextPriv().proxyProvider(); 453 454 SkBitmap bmp = make_src_bitmap(); 455 456 // On the GPU we will also try reading back from a non-renderable texture. 457 for (auto origin : {kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin}) { 458 for (auto flags : {kNone_GrSurfaceFlags, kRenderTarget_GrSurfaceFlag}) { 459 GrSurfaceDesc desc; 460 desc.fFlags = flags; 461 desc.fWidth = DEV_W; 462 desc.fHeight = DEV_H; 463 desc.fConfig = kSkia8888_GrPixelConfig; 464 desc.fOrigin = origin; 465 466 sk_sp<GrTextureProxy> proxy = proxyProvider->createTextureProxy(desc, SkBudgeted::kNo, 467 bmp.getPixels(), 468 bmp.rowBytes()); 469 470 sk_sp<GrSurfaceContext> sContext = context->contextPriv().makeWrappedSurfaceContext( 471 std::move(proxy)); 472 473 test_readpixels_texture(reporter, std::move(sContext)); 474 } 475 } 476} 477#endif 478 479/////////////////////////////////////////////////////////////////////////////////////////////////// 480 481static const uint32_t kNumPixels = 5; 482 483// The five reference pixels are: red, green, blue, white, black. 484// Five is an interesting number to test because we'll exercise a full 4-wide SIMD vector 485// plus a tail pixel. 486static const uint32_t rgba[kNumPixels] = { 487 0xFF0000FF, 0xFF00FF00, 0xFFFF0000, 0xFFFFFFFF, 0xFF000000 488}; 489static const uint32_t bgra[kNumPixels] = { 490 0xFFFF0000, 0xFF00FF00, 0xFF0000FF, 0xFFFFFFFF, 0xFF000000 491}; 492static const uint16_t rgb565[kNumPixels] = { 493 SK_R16_MASK_IN_PLACE, SK_G16_MASK_IN_PLACE, SK_B16_MASK_IN_PLACE, 0xFFFF, 0x0 494}; 495 496static const uint16_t rgba4444[kNumPixels] = { 0xF00F, 0x0F0F, 0x00FF, 0xFFFF, 0x000F }; 497 498static const uint64_t kRed = (uint64_t) SK_Half1 << 0; 499static const uint64_t kGreen = (uint64_t) SK_Half1 << 16; 500static const uint64_t kBlue = (uint64_t) SK_Half1 << 32; 501static const uint64_t kAlpha = (uint64_t) SK_Half1 << 48; 502static const uint64_t f16[kNumPixels] = { 503 kAlpha | kRed, kAlpha | kGreen, kAlpha | kBlue, kAlpha | kBlue | kGreen | kRed, kAlpha 504}; 505 506static const uint8_t alpha8[kNumPixels] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 507static const uint8_t gray8[kNumPixels] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 508 509static const void* five_reference_pixels(SkColorType colorType) { 510 switch (colorType) { 511 case kUnknown_SkColorType: 512 return nullptr; 513 case kAlpha_8_SkColorType: 514 return alpha8; 515 case kRGB_565_SkColorType: 516 return rgb565; 517 case kARGB_4444_SkColorType: 518 return rgba4444; 519 case kRGBA_8888_SkColorType: 520 return rgba; 521 case kBGRA_8888_SkColorType: 522 return bgra; 523 case kGray_8_SkColorType: 524 return gray8; 525 case kRGBA_F16_SkColorType: 526 return f16; 527 default: 528 return nullptr; // remove me when kIndex_8 is removed from the enum 529 } 530 531 SkASSERT(false); 532 return nullptr; 533} 534 535static void test_conversion(skiatest::Reporter* r, const SkImageInfo& dstInfo, 536 const SkImageInfo& srcInfo) { 537 if (!SkImageInfoIsValidRenderingCS(srcInfo)) { 538 return; 539 } 540 541 const void* srcPixels = five_reference_pixels(srcInfo.colorType()); 542 SkPixmap srcPixmap(srcInfo, srcPixels, srcInfo.minRowBytes()); 543 sk_sp<SkImage> src = SkImage::MakeFromRaster(srcPixmap, nullptr, nullptr); 544 REPORTER_ASSERT(r, src); 545 546 // Enough space for 5 pixels when color type is F16, more than enough space in other cases. 547 uint64_t dstPixels[kNumPixels]; 548 SkPixmap dstPixmap(dstInfo, dstPixels, dstInfo.minRowBytes()); 549 bool success = src->readPixels(dstPixmap, 0, 0); 550 REPORTER_ASSERT(r, success == SkImageInfoValidConversion(dstInfo, srcInfo)); 551 552 if (success) { 553 if (kGray_8_SkColorType == srcInfo.colorType() && 554 kGray_8_SkColorType != dstInfo.colorType()) 555 { 556 // This conversion is legal, but we won't get the "reference" pixels since we cannot 557 // represent colors in kGray8. 558 return; 559 } 560 561 REPORTER_ASSERT(r, 0 == memcmp(dstPixels, five_reference_pixels(dstInfo.colorType()), 562 kNumPixels * SkColorTypeBytesPerPixel(dstInfo.colorType()))); 563 564 } 565} 566 567DEF_TEST(ReadPixels_ValidConversion, reporter) { 568 const SkColorType kColorTypes[] = { 569 kUnknown_SkColorType, 570 kAlpha_8_SkColorType, 571 kRGB_565_SkColorType, 572 kARGB_4444_SkColorType, 573 kRGBA_8888_SkColorType, 574 kBGRA_8888_SkColorType, 575 kGray_8_SkColorType, 576 kRGBA_F16_SkColorType, 577 }; 578 579 const SkAlphaType kAlphaTypes[] = { 580 kUnknown_SkAlphaType, 581 kOpaque_SkAlphaType, 582 kPremul_SkAlphaType, 583 kUnpremul_SkAlphaType, 584 }; 585 586 const sk_sp<SkColorSpace> kColorSpaces[] = { 587 nullptr, 588 SkColorSpace::MakeSRGB(), 589 }; 590 591 for (SkColorType dstCT : kColorTypes) { 592 for (SkAlphaType dstAT: kAlphaTypes) { 593 for (sk_sp<SkColorSpace> dstCS : kColorSpaces) { 594 for (SkColorType srcCT : kColorTypes) { 595 for (SkAlphaType srcAT: kAlphaTypes) { 596 for (sk_sp<SkColorSpace> srcCS : kColorSpaces) { 597 if (kRGBA_F16_SkColorType == dstCT && dstCS) { 598 dstCS = dstCS->makeLinearGamma(); 599 } 600 601 if (kRGBA_F16_SkColorType == srcCT && srcCS) { 602 srcCS = srcCS->makeLinearGamma(); 603 } 604 605 test_conversion(reporter, 606 SkImageInfo::Make(kNumPixels, 1, dstCT, dstAT, dstCS), 607 SkImageInfo::Make(kNumPixels, 1, srcCT, srcAT, srcCS)); 608 } 609 } 610 } 611 } 612 } 613 } 614} 615