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      1 /*
      2  * Copyright 2016 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 "Resources.h"
      9 #include "SkCodec.h"
     10 #include "SkColorSpace.h"
     11 #include "SkColorSpace_Base.h"
     12 #include "SkColorSpace_XYZ.h"
     13 #include "SkColorSpacePriv.h"
     14 #include "Test.h"
     15 
     16 #include "png.h"
     17 
     18 static bool almost_equal(float a, float b) {
     19     return SkTAbs(a - b) < 0.001f;
     20 }
     21 
     22 static void test_space(skiatest::Reporter* r, SkColorSpace* space,
     23                        const float red[], const float green[], const float blue[],
     24                        const SkGammaNamed expectedGamma) {
     25 
     26     REPORTER_ASSERT(r, nullptr != space);
     27     SkASSERT(SkColorSpace_Base::Type::kXYZ == as_CSB(space)->type());
     28     SkColorSpace_XYZ* csXYZ = static_cast<SkColorSpace_XYZ*>(space);
     29     REPORTER_ASSERT(r, expectedGamma == csXYZ->gammaNamed());
     30 
     31     const SkMatrix44& mat = *csXYZ->toXYZD50();
     32     const float src[] = {
     33         1, 0, 0, 1,
     34         0, 1, 0, 1,
     35         0, 0, 1, 1,
     36     };
     37     const float* ref[3] = { red, green, blue };
     38     float dst[4];
     39     for (int i = 0; i < 3; ++i) {
     40         mat.mapScalars(&src[i*4], dst);
     41         REPORTER_ASSERT(r, almost_equal(ref[i][0], dst[0]));
     42         REPORTER_ASSERT(r, almost_equal(ref[i][1], dst[1]));
     43         REPORTER_ASSERT(r, almost_equal(ref[i][2], dst[2]));
     44     }
     45 }
     46 
     47 static void test_path(skiatest::Reporter* r, const char* path,
     48                       const float red[], const float green[], const float blue[],
     49                       const SkGammaNamed expectedGamma) {
     50     std::unique_ptr<SkStream> stream(GetResourceAsStream(path));
     51     REPORTER_ASSERT(r, nullptr != stream);
     52     if (!stream) {
     53         return;
     54     }
     55 
     56     std::unique_ptr<SkCodec> codec(SkCodec::NewFromStream(stream.release()));
     57     REPORTER_ASSERT(r, nullptr != codec);
     58     if (!codec) {
     59         return;
     60     }
     61 
     62     SkColorSpace* colorSpace = codec->getInfo().colorSpace();
     63     test_space(r, colorSpace, red, green, blue, expectedGamma);
     64 }
     65 
     66 static constexpr float g_sRGB_XYZ[]{
     67     0.4358f, 0.3853f, 0.1430f,    // Rx, Gx, Bx
     68     0.2224f, 0.7170f, 0.0606f,    // Ry, Gy, Gz
     69     0.0139f, 0.0971f, 0.7139f,    // Rz, Gz, Bz
     70 };
     71 
     72 static constexpr float g_sRGB_R[]{ 0.4358f, 0.2224f, 0.0139f };
     73 static constexpr float g_sRGB_G[]{ 0.3853f, 0.7170f, 0.0971f };
     74 static constexpr float g_sRGB_B[]{ 0.1430f, 0.0606f, 0.7139f };
     75 
     76 DEF_TEST(ColorSpace_sRGB, r) {
     77     test_space(r, SkColorSpace::MakeSRGB().get(),
     78                g_sRGB_R, g_sRGB_G, g_sRGB_B, kSRGB_SkGammaNamed);
     79 
     80 }
     81 
     82 DEF_TEST(ColorSpaceParseICCProfiles, r) {
     83 
     84 #if (PNG_LIBPNG_VER_MAJOR > 1) || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR >= 6)
     85     test_path(r, "color_wheel_with_profile.png", g_sRGB_R, g_sRGB_G, g_sRGB_B,
     86               kSRGB_SkGammaNamed);
     87 #endif
     88 
     89     const float red[] = { 0.385117f, 0.716904f, 0.0970612f };
     90     const float green[] = { 0.143051f, 0.0606079f, 0.713913f };
     91     const float blue[] = { 0.436035f, 0.222488f, 0.013916f };
     92     test_path(r, "icc-v2-gbr.jpg", red, green, blue, k2Dot2Curve_SkGammaNamed);
     93 
     94     test_path(r, "webp-color-profile-crash.webp",
     95             red, green, blue, kNonStandard_SkGammaNamed);
     96     test_path(r, "webp-color-profile-lossless.webp",
     97             red, green, blue, kNonStandard_SkGammaNamed);
     98     test_path(r, "webp-color-profile-lossy.webp",
     99             red, green, blue, kNonStandard_SkGammaNamed);
    100     test_path(r, "webp-color-profile-lossy-alpha.webp",
    101             red, green, blue, kNonStandard_SkGammaNamed);
    102 }
    103 
    104 DEF_TEST(ColorSpaceSRGBCompare, r) {
    105     // Create an sRGB color space by name
    106     sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::MakeSRGB();
    107 
    108     // Create an sRGB color space by value
    109     SkMatrix44 srgbToxyzD50(SkMatrix44::kUninitialized_Constructor);
    110     srgbToxyzD50.set3x3RowMajorf(g_sRGB_XYZ);
    111     sk_sp<SkColorSpace> rgbColorSpace =
    112             SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, srgbToxyzD50);
    113     REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace);
    114 
    115     SkColorSpaceTransferFn srgbFn;
    116     srgbFn.fA = (1.0f / 1.055f);
    117     srgbFn.fB = (0.055f / 1.055f);
    118     srgbFn.fC = (1.0f / 12.92f);
    119     srgbFn.fD = 0.04045f;
    120     srgbFn.fE = 0.0f;
    121     srgbFn.fF = 0.0f;
    122     srgbFn.fG = 2.4f;
    123     sk_sp<SkColorSpace> rgbColorSpace2 = SkColorSpace::MakeRGB(srgbFn, srgbToxyzD50);
    124     REPORTER_ASSERT(r, rgbColorSpace2 == namedColorSpace);
    125 
    126     // Change a single value from the sRGB matrix
    127     srgbToxyzD50.set(2, 2, 0.5f);
    128     sk_sp<SkColorSpace> strangeColorSpace =
    129             SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, srgbToxyzD50);
    130     REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace);
    131 }
    132 
    133 DEF_TEST(ColorSpaceSRGBLinearCompare, r) {
    134     // Create the linear sRGB color space by name
    135     sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::MakeSRGBLinear();
    136 
    137     // Create the linear sRGB color space via the sRGB color space's makeLinearGamma()
    138     auto srgb = SkColorSpace::MakeSRGB();
    139     auto srgbXYZ = static_cast<SkColorSpace_XYZ*>(srgb.get());
    140     sk_sp<SkColorSpace> viaSrgbColorSpace = srgbXYZ->makeLinearGamma();
    141     REPORTER_ASSERT(r, namedColorSpace == viaSrgbColorSpace);
    142 
    143     // Create a linear sRGB color space by value
    144     SkMatrix44 srgbToxyzD50(SkMatrix44::kUninitialized_Constructor);
    145     srgbToxyzD50.set3x3RowMajorf(g_sRGB_XYZ);
    146     sk_sp<SkColorSpace> rgbColorSpace =
    147         SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma, srgbToxyzD50);
    148     REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace);
    149 
    150     SkColorSpaceTransferFn linearExpFn;
    151     linearExpFn.fA = 1.0f;
    152     linearExpFn.fB = 0.0f;
    153     linearExpFn.fC = 0.0f;
    154     linearExpFn.fD = 0.0f;
    155     linearExpFn.fE = 0.0f;
    156     linearExpFn.fF = 0.0f;
    157     linearExpFn.fG = 1.0f;
    158     sk_sp<SkColorSpace> rgbColorSpace2 = SkColorSpace::MakeRGB(linearExpFn, srgbToxyzD50);
    159     REPORTER_ASSERT(r, rgbColorSpace2 == namedColorSpace);
    160 
    161     SkColorSpaceTransferFn linearFn;
    162     linearFn.fA = 0.0f;
    163     linearFn.fB = 0.0f;
    164     linearFn.fC = 1.0f;
    165     linearFn.fD = 1.0f;
    166     linearFn.fE = 0.0f;
    167     linearFn.fF = 0.0f;
    168     linearFn.fG = 0.0f;
    169     sk_sp<SkColorSpace> rgbColorSpace3 = SkColorSpace::MakeRGB(linearFn, srgbToxyzD50);
    170     REPORTER_ASSERT(r, rgbColorSpace3 == namedColorSpace);
    171 
    172     // Change a single value from the sRGB matrix
    173     srgbToxyzD50.set(2, 2, 0.5f);
    174     sk_sp<SkColorSpace> strangeColorSpace =
    175         SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma, srgbToxyzD50);
    176     REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace);
    177 }
    178 
    179 DEF_TEST(ColorSpaceAdobeCompare, r) {
    180     // Create an sRGB color space by name
    181     sk_sp<SkColorSpace> namedColorSpace =
    182             SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named);
    183 
    184     // Create an sRGB color space by value
    185     SkMatrix44 adobeToxyzD50(SkMatrix44::kUninitialized_Constructor);
    186     adobeToxyzD50.set3x3RowMajorf(gAdobeRGB_toXYZD50);
    187 
    188     SkColorSpaceTransferFn fn;
    189     fn.fA = 1.0f;
    190     fn.fB = 0.0f;
    191     fn.fC = 0.0f;
    192     fn.fD = 0.0f;
    193     fn.fE = 0.0f;
    194     fn.fF = 0.0f;
    195     fn.fG = 2.2f;
    196     sk_sp<SkColorSpace> rgbColorSpace = SkColorSpace::MakeRGB(fn, adobeToxyzD50);
    197     REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace);
    198 }
    199 
    200 DEF_TEST(ColorSpace_Named, r) {
    201     const struct {
    202         SkColorSpace_Base::Named fNamed;
    203         SkGammaNamed             fExpectedGamma;
    204     } recs[] {
    205         { SkColorSpace_Base::kSRGB_Named,       kSRGB_SkGammaNamed },
    206         { SkColorSpace_Base::kAdobeRGB_Named,   k2Dot2Curve_SkGammaNamed },
    207         { SkColorSpace_Base::kSRGBLinear_Named, kLinear_SkGammaNamed },
    208     };
    209 
    210     for (auto rec : recs) {
    211         auto cs = SkColorSpace_Base::MakeNamed(rec.fNamed);
    212         REPORTER_ASSERT(r, cs);
    213         if (cs) {
    214             SkASSERT(SkColorSpace_Base::Type::kXYZ == as_CSB(cs)->type());
    215             SkColorSpace_XYZ* csXYZ = static_cast<SkColorSpace_XYZ*>(cs.get());
    216             REPORTER_ASSERT(r, rec.fExpectedGamma == csXYZ->gammaNamed());
    217         }
    218     }
    219 
    220     SkImageInfo info = SkImageInfo::MakeS32(10, 10, kPremul_SkAlphaType);
    221     REPORTER_ASSERT(r, info.gammaCloseToSRGB());
    222 }
    223 
    224 static void test_serialize(skiatest::Reporter* r, SkColorSpace* space, bool isNamed) {
    225     sk_sp<SkData> data1 = space->serialize();
    226 
    227     size_t bytes = space->writeToMemory(nullptr);
    228     sk_sp<SkData> data2 = SkData::MakeUninitialized(bytes);
    229     space->writeToMemory(data2->writable_data());
    230 
    231     sk_sp<SkColorSpace> newSpace1 = SkColorSpace::Deserialize(data1->data(), data1->size());
    232     sk_sp<SkColorSpace> newSpace2 = SkColorSpace::Deserialize(data2->data(), data2->size());
    233 
    234     if (isNamed) {
    235         REPORTER_ASSERT(r, space == newSpace1.get());
    236         REPORTER_ASSERT(r, space == newSpace2.get());
    237     } else {
    238         REPORTER_ASSERT(r, SkColorSpace::Equals(space, newSpace1.get()));
    239         REPORTER_ASSERT(r, SkColorSpace::Equals(space, newSpace2.get()));
    240     }
    241 }
    242 
    243 DEF_TEST(ColorSpace_Serialize, r) {
    244     test_serialize(r, SkColorSpace::MakeSRGB().get(), true);
    245     test_serialize(r, SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named).get(), true);
    246     test_serialize(r, SkColorSpace::MakeSRGBLinear().get(), true);
    247 
    248     sk_sp<SkData> monitorData = SkData::MakeFromFileName(
    249             GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
    250     test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false);
    251     monitorData = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
    252     test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false);
    253     monitorData = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
    254     test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false);
    255     monitorData = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
    256     test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false);
    257 
    258     SkColorSpaceTransferFn fn;
    259     fn.fA = 1.0f;
    260     fn.fB = 0.0f;
    261     fn.fC = 1.0f;
    262     fn.fD = 0.5f;
    263     fn.fE = 0.0f;
    264     fn.fF = 0.0f;
    265     fn.fG = 1.0f;
    266     SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor);
    267     test_serialize(r, SkColorSpace::MakeRGB(fn, toXYZ).get(), false);
    268 }
    269 
    270 DEF_TEST(ColorSpace_Equals, r) {
    271     sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
    272     sk_sp<SkColorSpace> adobe = SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named);
    273     sk_sp<SkData> data = SkData::MakeFromFileName(
    274             GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
    275     sk_sp<SkColorSpace> z30 = SkColorSpace::MakeICC(data->data(), data->size());
    276     data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
    277     sk_sp<SkColorSpace> z32 = SkColorSpace::MakeICC(data->data(), data->size());
    278     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
    279     sk_sp<SkColorSpace> upperLeft = SkColorSpace::MakeICC(data->data(), data->size());
    280     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
    281     sk_sp<SkColorSpace> upperRight = SkColorSpace::MakeICC(data->data(), data->size());
    282 
    283     SkColorSpaceTransferFn fn;
    284     fn.fA = 1.0f;
    285     fn.fB = 0.0f;
    286     fn.fC = 1.0f;
    287     fn.fD = 0.5f;
    288     fn.fE = 0.0f;
    289     fn.fF = 0.0f;
    290     fn.fG = 1.0f;
    291     SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor);
    292     sk_sp<SkColorSpace> rgb4 = SkColorSpace::MakeRGB(fn, toXYZ);
    293 
    294     REPORTER_ASSERT(r, SkColorSpace::Equals(nullptr, nullptr));
    295     REPORTER_ASSERT(r, SkColorSpace::Equals(srgb.get(), srgb.get()));
    296     REPORTER_ASSERT(r, SkColorSpace::Equals(adobe.get(), adobe.get()));
    297     REPORTER_ASSERT(r, SkColorSpace::Equals(z30.get(), z30.get()));
    298     REPORTER_ASSERT(r, SkColorSpace::Equals(z32.get(), z32.get()));
    299     REPORTER_ASSERT(r, SkColorSpace::Equals(upperLeft.get(), upperLeft.get()));
    300     REPORTER_ASSERT(r, SkColorSpace::Equals(upperRight.get(), upperRight.get()));
    301     REPORTER_ASSERT(r, SkColorSpace::Equals(rgb4.get(), rgb4.get()));
    302 
    303     REPORTER_ASSERT(r, !SkColorSpace::Equals(nullptr, srgb.get()));
    304     REPORTER_ASSERT(r, !SkColorSpace::Equals(srgb.get(), nullptr));
    305     REPORTER_ASSERT(r, !SkColorSpace::Equals(adobe.get(), srgb.get()));
    306     REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), srgb.get()));
    307     REPORTER_ASSERT(r, !SkColorSpace::Equals(z32.get(), z30.get()));
    308     REPORTER_ASSERT(r, !SkColorSpace::Equals(upperLeft.get(), srgb.get()));
    309     REPORTER_ASSERT(r, !SkColorSpace::Equals(upperLeft.get(), upperRight.get()));
    310     REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), upperRight.get()));
    311     REPORTER_ASSERT(r, !SkColorSpace::Equals(upperRight.get(), adobe.get()));
    312     REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), rgb4.get()));
    313     REPORTER_ASSERT(r, !SkColorSpace::Equals(srgb.get(), rgb4.get()));
    314 }
    315 
    316 static inline bool matrix_almost_equal(const SkMatrix44& a, const SkMatrix44& b) {
    317     return almost_equal(a.get(0, 0), b.get(0, 0)) &&
    318            almost_equal(a.get(0, 1), b.get(0, 1)) &&
    319            almost_equal(a.get(0, 2), b.get(0, 2)) &&
    320            almost_equal(a.get(0, 3), b.get(0, 3)) &&
    321            almost_equal(a.get(1, 0), b.get(1, 0)) &&
    322            almost_equal(a.get(1, 1), b.get(1, 1)) &&
    323            almost_equal(a.get(1, 2), b.get(1, 2)) &&
    324            almost_equal(a.get(1, 3), b.get(1, 3)) &&
    325            almost_equal(a.get(2, 0), b.get(2, 0)) &&
    326            almost_equal(a.get(2, 1), b.get(2, 1)) &&
    327            almost_equal(a.get(2, 2), b.get(2, 2)) &&
    328            almost_equal(a.get(2, 3), b.get(2, 3)) &&
    329            almost_equal(a.get(3, 0), b.get(3, 0)) &&
    330            almost_equal(a.get(3, 1), b.get(3, 1)) &&
    331            almost_equal(a.get(3, 2), b.get(3, 2)) &&
    332            almost_equal(a.get(3, 3), b.get(3, 3));
    333 }
    334 
    335 static inline void check_primaries(skiatest::Reporter* r, const SkColorSpacePrimaries& primaries,
    336                                    const SkMatrix44& reference) {
    337     SkMatrix44 toXYZ(SkMatrix44::kUninitialized_Constructor);
    338     bool result = primaries.toXYZD50(&toXYZ);
    339     REPORTER_ASSERT(r, result);
    340     REPORTER_ASSERT(r, matrix_almost_equal(toXYZ, reference));
    341 }
    342 
    343 DEF_TEST(ColorSpace_Primaries, r) {
    344     // sRGB primaries (D65)
    345     SkColorSpacePrimaries srgb;
    346     srgb.fRX = 0.64f;
    347     srgb.fRY = 0.33f;
    348     srgb.fGX = 0.30f;
    349     srgb.fGY = 0.60f;
    350     srgb.fBX = 0.15f;
    351     srgb.fBY = 0.06f;
    352     srgb.fWX = 0.3127f;
    353     srgb.fWY = 0.3290f;
    354     SkMatrix44 srgbToXYZ(SkMatrix44::kUninitialized_Constructor);
    355     bool result = srgb.toXYZD50(&srgbToXYZ);
    356     REPORTER_ASSERT(r, result);
    357 
    358     sk_sp<SkColorSpace> space = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
    359                                                       srgbToXYZ);
    360     REPORTER_ASSERT(r, SkColorSpace::MakeSRGB() == space);
    361 
    362     // AdobeRGB primaries (D65)
    363     SkColorSpacePrimaries adobe;
    364     adobe.fRX = 0.64f;
    365     adobe.fRY = 0.33f;
    366     adobe.fGX = 0.21f;
    367     adobe.fGY = 0.71f;
    368     adobe.fBX = 0.15f;
    369     adobe.fBY = 0.06f;
    370     adobe.fWX = 0.3127f;
    371     adobe.fWY = 0.3290f;
    372     SkMatrix44 adobeToXYZ(SkMatrix44::kUninitialized_Constructor);
    373     result = adobe.toXYZD50(&adobeToXYZ);
    374     REPORTER_ASSERT(r, result);
    375 
    376     SkColorSpaceTransferFn fn;
    377     fn.fA = 1.0f;
    378     fn.fB = fn.fC = fn.fD = fn.fE = fn.fF = 0.0f;
    379     fn.fG = 2.2f;
    380     space = SkColorSpace::MakeRGB(fn, adobeToXYZ);
    381     REPORTER_ASSERT(r, SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named) == space);
    382 
    383     // ProPhoto (D50)
    384     SkColorSpacePrimaries proPhoto;
    385     proPhoto.fRX = 0.7347f;
    386     proPhoto.fRY = 0.2653f;
    387     proPhoto.fGX = 0.1596f;
    388     proPhoto.fGY = 0.8404f;
    389     proPhoto.fBX = 0.0366f;
    390     proPhoto.fBY = 0.0001f;
    391     proPhoto.fWX = 0.34567f;
    392     proPhoto.fWY = 0.35850f;
    393     SkMatrix44 proToXYZ(SkMatrix44::kUninitialized_Constructor);
    394     proToXYZ.set3x3(0.7976749f, 0.2880402f, 0.0000000f,
    395                     0.1351917f, 0.7118741f, 0.0000000f,
    396                     0.0313534f, 0.0000857f, 0.8252100f);
    397     check_primaries(r, proPhoto, proToXYZ);
    398 
    399     // NTSC (C)
    400     SkColorSpacePrimaries ntsc;
    401     ntsc.fRX = 0.67f;
    402     ntsc.fRY = 0.33f;
    403     ntsc.fGX = 0.21f;
    404     ntsc.fGY = 0.71f;
    405     ntsc.fBX = 0.14f;
    406     ntsc.fBY = 0.08f;
    407     ntsc.fWX = 0.31006f;
    408     ntsc.fWY = 0.31616f;
    409     SkMatrix44 ntscToXYZ(SkMatrix44::kUninitialized_Constructor);
    410     ntscToXYZ.set3x3(0.6343706f, 0.3109496f, -0.0011817f,
    411                      0.1852204f, 0.5915984f, 0.0555518f,
    412                      0.1446290f, 0.0974520f, 0.7708399f);
    413     check_primaries(r, ntsc, ntscToXYZ);
    414 
    415     // DCI P3 (D65)
    416     SkColorSpacePrimaries p3;
    417     p3.fRX = 0.680f;
    418     p3.fRY = 0.320f;
    419     p3.fGX = 0.265f;
    420     p3.fGY = 0.690f;
    421     p3.fBX = 0.150f;
    422     p3.fBY = 0.060f;
    423     p3.fWX = 0.3127f;
    424     p3.fWY = 0.3290f;
    425     space = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
    426                                   SkColorSpace::kDCIP3_D65_Gamut);
    427     SkMatrix44 reference(SkMatrix44::kUninitialized_Constructor);
    428     SkAssertResult(space->toXYZD50(&reference));
    429     check_primaries(r, p3, reference);
    430 
    431     // Rec 2020 (D65)
    432     SkColorSpacePrimaries rec2020;
    433     rec2020.fRX = 0.708f;
    434     rec2020.fRY = 0.292f;
    435     rec2020.fGX = 0.170f;
    436     rec2020.fGY = 0.797f;
    437     rec2020.fBX = 0.131f;
    438     rec2020.fBY = 0.046f;
    439     rec2020.fWX = 0.3127f;
    440     rec2020.fWY = 0.3290f;
    441     space = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
    442                                   SkColorSpace::kRec2020_Gamut);
    443     SkAssertResult(space->toXYZD50(&reference));
    444     check_primaries(r, rec2020, reference);
    445 }
    446 
    447 DEF_TEST(ColorSpace_InvalidICC, r) {
    448     // This color space has a matrix that is not D50.
    449     sk_sp<SkData> data = SkData::MakeFromFileName(
    450             GetResourcePath("icc_profiles/SM2333SW.icc").c_str());
    451     sk_sp<SkColorSpace> cs = SkColorSpace::MakeICC(data->data(), data->size());
    452     REPORTER_ASSERT(r, !cs);
    453 }
    454 
    455 DEF_TEST(ColorSpace_MatrixHash, r) {
    456     sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
    457 
    458     SkColorSpaceTransferFn fn;
    459     fn.fA = 1.0f;
    460     fn.fB = 0.0f;
    461     fn.fC = 0.0f;
    462     fn.fD = 0.0f;
    463     fn.fE = 0.0f;
    464     fn.fF = 0.0f;
    465     fn.fG = 3.0f;
    466 
    467     SkMatrix44 srgbMat(SkMatrix44::kUninitialized_Constructor);
    468     srgbMat.set3x3RowMajorf(gSRGB_toXYZD50);
    469     sk_sp<SkColorSpace> strange = SkColorSpace::MakeRGB(fn, srgbMat);
    470 
    471     REPORTER_ASSERT(r, *as_CSB(srgb)->toXYZD50() == *as_CSB(strange)->toXYZD50());
    472     REPORTER_ASSERT(r, as_CSB(srgb)->toXYZD50Hash() == as_CSB(strange)->toXYZD50Hash());
    473 }
    474 
    475 DEF_TEST(ColorSpace_IsSRGB, r) {
    476     sk_sp<SkColorSpace> srgb0 = SkColorSpace::MakeSRGB();
    477 
    478     SkColorSpaceTransferFn fn;
    479     fn.fA = 1.0f;
    480     fn.fB = 0.0f;
    481     fn.fC = 0.0f;
    482     fn.fD = 0.0f;
    483     fn.fE = 0.0f;
    484     fn.fF = 0.0f;
    485     fn.fG = 2.2f;
    486     sk_sp<SkColorSpace> twoDotTwo = SkColorSpace::MakeRGB(fn, SkColorSpace::kSRGB_Gamut);
    487 
    488     REPORTER_ASSERT(r, srgb0->isSRGB());
    489     REPORTER_ASSERT(r, !twoDotTwo->isSRGB());
    490 }
    491