4d602144a9
Reason for revert: I believe I've fixed SkMatrix44::I() to be thread safe, let's test it by reverting this CL. Original issue's description: > Potential fix for flaky TSAN > > TBR=mtklein@google.com > BUG=skia: > GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2084243003 > > Committed: https://skia.googlesource.com/skia/+/949999d0bbc247906995358a90c4e436e9152de2 TBR=mtklein@google.com # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=skia: Review-Url: https://codereview.chromium.org/2091573004
116 lines
4.4 KiB
C++
116 lines
4.4 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Resources.h"
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#include "SkCodec.h"
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#include "SkColorPriv.h"
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#include "SkColorSpace.h"
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#include "SkColorSpace_Base.h"
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#include "SkColorSpaceXform.h"
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#include "Test.h"
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class ColorSpaceXformTest {
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public:
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static std::unique_ptr<SkColorSpaceXform> CreateDefaultXform(const sk_sp<SkGammas>& srcGamma,
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const SkMatrix44& srcToDst, const sk_sp<SkGammas>& dstGamma) {
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sk_sp<SkColorSpace> srcSpace(
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new SkColorSpace_Base(nullptr, srcGamma, SkMatrix::I(), nullptr));
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sk_sp<SkColorSpace> dstSpace(
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new SkColorSpace_Base(nullptr, dstGamma, SkMatrix::I(), nullptr));
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return SkColorSpaceXform::New(srcSpace, dstSpace);
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}
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};
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static bool almost_equal(int x, int y) {
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return SkTAbs(x - y) <= 1;
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}
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static void test_xform(skiatest::Reporter* r, const sk_sp<SkGammas>& gammas) {
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// Arbitrary set of 10 pixels
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constexpr int width = 10;
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constexpr uint32_t srcPixels[width] = {
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0xFFABCDEF, 0xFF146829, 0xFF382759, 0xFF184968, 0xFFDE8271,
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0xFF32AB52, 0xFF0383BC, 0xFF000102, 0xFFFFFFFF, 0xFFDDEEFF, };
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uint32_t dstPixels[width];
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// Identity matrix
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SkMatrix44 srcToDst = SkMatrix44::I();
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// Create and perform xform
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std::unique_ptr<SkColorSpaceXform> xform =
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ColorSpaceXformTest::CreateDefaultXform(gammas, srcToDst, gammas);
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xform->xform_RGB1_8888(dstPixels, srcPixels, width);
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// Since the matrix is the identity, and the gamma curves match, the pixels
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// should be unchanged.
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for (int i = 0; i < width; i++) {
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REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 0) & 0xFF),
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SkGetPackedR32(dstPixels[i])));
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REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 8) & 0xFF),
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SkGetPackedG32(dstPixels[i])));
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REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 16) & 0xFF),
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SkGetPackedB32(dstPixels[i])));
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REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 24) & 0xFF),
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SkGetPackedA32(dstPixels[i])));
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}
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}
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DEF_TEST(ColorSpaceXform_TableGamma, r) {
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// Lookup-table based gamma curves
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SkGammaCurve red, green, blue;
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constexpr size_t tableSize = 10;
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red.fTable = std::unique_ptr<float[]>(new float[tableSize]);
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green.fTable = std::unique_ptr<float[]>(new float[tableSize]);
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blue.fTable = std::unique_ptr<float[]>(new float[tableSize]);
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red.fTableSize = green.fTableSize = blue.fTableSize = 10;
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red.fTable[0] = green.fTable[0] = blue.fTable[0] = 0.00f;
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red.fTable[1] = green.fTable[1] = blue.fTable[1] = 0.05f;
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red.fTable[2] = green.fTable[2] = blue.fTable[2] = 0.10f;
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red.fTable[3] = green.fTable[3] = blue.fTable[3] = 0.15f;
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red.fTable[4] = green.fTable[4] = blue.fTable[4] = 0.25f;
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red.fTable[5] = green.fTable[5] = blue.fTable[5] = 0.35f;
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red.fTable[6] = green.fTable[6] = blue.fTable[6] = 0.45f;
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red.fTable[7] = green.fTable[7] = blue.fTable[7] = 0.60f;
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red.fTable[8] = green.fTable[8] = blue.fTable[8] = 0.75f;
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red.fTable[9] = green.fTable[9] = blue.fTable[9] = 1.00f;
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sk_sp<SkGammas> gammas =
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sk_make_sp<SkGammas>(std::move(red), std::move(green), std::move(blue));
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test_xform(r, gammas);
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}
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DEF_TEST(ColorSpaceXform_ParametricGamma, r) {
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// Parametric gamma curves
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SkGammaCurve red, green, blue;
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// Interval, switch xforms at 0.0031308f
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red.fD = green.fD = blue.fD = 0.04045f;
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// First equation:
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red.fE = green.fE = blue.fE = 1.0f / 12.92f;
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// Second equation:
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// Note that the function is continuous (it's actually sRGB).
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red.fA = green.fA = blue.fA = 1.0f / 1.055f;
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red.fB = green.fB = blue.fB = 0.055f / 1.055f;
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red.fC = green.fC = blue.fC = 0.0f;
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red.fG = green.fG = blue.fG = 2.4f;
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sk_sp<SkGammas> gammas =
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sk_make_sp<SkGammas>(std::move(red), std::move(green), std::move(blue));
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test_xform(r, gammas);
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}
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DEF_TEST(ColorSpaceXform_ExponentialGamma, r) {
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// Exponential gamma curves
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SkGammaCurve red, green, blue;
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red.fValue = green.fValue = blue.fValue = 1.4f;
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sk_sp<SkGammas> gammas =
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sk_make_sp<SkGammas>(std::move(red), std::move(green), std::move(blue));
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test_xform(r, gammas);
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}
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