Function TGFX_TEST

test/src/ReadPixelsTest.cpp:36–156

  }

TGFX_TEST(ReadPixelsTest, PixelMap) {
  auto codec = MakeImageCodec("resources/apitest/test_timestretch.png");
  EXPECT_TRUE(codec != nullptr);
  auto width = codec->width();
  auto height = codec->height();
  auto RGBAInfo = ImageInfo::Make(width, height, ColorType::RGBA_8888, AlphaType::Unpremultiplied);
  auto byteSize = RGBAInfo.byteSize();
  Buffer pixelsA(byteSize);
  Buffer pixelsB(byteSize * 2);
  auto result = codec->readPixels(RGBAInfo, pixelsA.data());
  EXPECT_TRUE(result);

  Pixmap RGBAMap(RGBAInfo, pixelsA.data());
  CHECK_PIXELS(RGBAInfo, pixelsA.data(), "PixelMap_RGBA_Original");

  result = RGBAMap.readPixels(RGBAInfo, pixelsB.data());
  EXPECT_TRUE(result);
  CHECK_PIXELS(RGBAInfo, pixelsB.data(), "PixelMap_RGBA_to_RGBA");

  pixelsB.clear();
  auto RGB565Info = RGBAInfo.makeColorType(ColorType::RGB_565);
  result = RGBAMap.readPixels(RGB565Info, pixelsB.data());
  EXPECT_TRUE(result);
  CHECK_PIXELS(RGB565Info, pixelsB.data(), "PixelMap_RGBA_to_RGB565");

  pixelsB.clear();
  auto Gray8Info = RGBAInfo.makeColorType(ColorType::Gray_8);
  result = RGBAMap.readPixels(Gray8Info, pixelsB.data());
  EXPECT_TRUE(result);
  CHECK_PIXELS(Gray8Info, pixelsB.data(), "PixelMap_RGBA_to_Gray8");

  pixelsB.clear();
  auto RGBAF16Info = RGBAInfo.makeColorType(ColorType::RGBA_F16);
  result = RGBAMap.readPixels(RGBAF16Info, pixelsB.data());
  EXPECT_TRUE(result);
  CHECK_PIXELS(RGBAF16Info, pixelsB.data(), "PixelMap_RGBA_to_RGBA_F16");

  pixelsB.clear();
  auto RGBA1010102Info = RGBAInfo.makeColorType(ColorType::RGBA_1010102);
  result = RGBAMap.readPixels(RGBA1010102Info, pixelsB.data());
  EXPECT_TRUE(result);
  CHECK_PIXELS(RGBA1010102Info, pixelsB.data(), "PixelMap_RGBA_to_RGBA_1010102");

  pixelsB.clear();
  result = RGBAMap.readPixels(RGBAInfo, pixelsB.data(), 100, 100);
  EXPECT_TRUE(result);
  CHECK_PIXELS(RGBAInfo, pixelsB.data(), "PixelMap_RGBA_to_RGBA_100_100");

  auto RGBARectInfo = ImageInfo::Make(500, 500, ColorType::RGBA_8888, AlphaType::Premultiplied);
  pixelsB.clear();
  result = RGBAMap.readPixels(RGBARectInfo, pixelsB.data(), -100, -100);
  EXPECT_TRUE(result);
  CHECK_PIXELS(RGBARectInfo, pixelsB.data(), "PixelMap_RGBA_to_RGBA_-100_-100");

  pixelsB.clear();
  result = RGBAMap.readPixels(RGBARectInfo, pixelsB.data(), 100, -100);
  EXPECT_TRUE(result);
  CHECK_PIXELS(RGBARectInfo, pixelsB.data(), "PixelMap_RGBA_to_RGBA_100_-100");