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76 lines
3.2 KiB
76 lines
3.2 KiB
/* |
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SPDX-FileCopyrightText: 2023 Xaver Hugl <xaver.hugl@gmail.com> |
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SPDX-License-Identifier: LGPL-2.0-or-later |
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*/ |
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#include <QTest> |
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#include "core/colorspace.h" |
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using namespace KWin; |
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class TestColorspaces : public QObject |
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{ |
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Q_OBJECT |
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public: |
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TestColorspaces() = default; |
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private Q_SLOTS: |
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void roundtripConversion_data(); |
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void roundtripConversion(); |
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}; |
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static bool compareVectors(const QVector3D &one, const QVector3D &two, float maxDifference) |
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{ |
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const bool ret = std::abs(one.x() - two.x()) <= maxDifference |
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&& std::abs(one.y() - two.y()) <= maxDifference |
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&& std::abs(one.z() - two.z()) <= maxDifference; |
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if (!ret) { |
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qWarning() << one << "!=" << two << "within" << maxDifference; |
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} |
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return ret; |
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} |
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void TestColorspaces::roundtripConversion_data() |
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{ |
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QTest::addColumn<NamedColorimetry>("srcColorimetry"); |
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QTest::addColumn<NamedTransferFunction>("srcTransferFunction"); |
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QTest::addColumn<NamedColorimetry>("dstColorimetry"); |
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QTest::addColumn<NamedTransferFunction>("dstTransferFunction"); |
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QTest::addColumn<double>("requiredAccuracy"); |
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const double resolution10bit = std::pow(1.0 / 2.0, 10); |
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QTest::addRow("BT709 (sRGB) <-> BT2020 (linear)") << NamedColorimetry::BT709 << NamedTransferFunction::sRGB << NamedColorimetry::BT2020 << NamedTransferFunction::linear << resolution10bit; |
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QTest::addRow("BT709 (gamma 2.2) <-> BT2020 (linear)") << NamedColorimetry::BT709 << NamedTransferFunction::gamma22 << NamedColorimetry::BT2020 << NamedTransferFunction::linear << resolution10bit; |
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QTest::addRow("BT709 (scRGB) <-> BT2020 (linear)") << NamedColorimetry::BT709 << NamedTransferFunction::scRGB << NamedColorimetry::BT2020 << NamedTransferFunction::linear << resolution10bit; |
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QTest::addRow("BT709 (linear) <-> BT2020 (linear)") << NamedColorimetry::BT709 << NamedTransferFunction::linear << NamedColorimetry::BT2020 << NamedTransferFunction::linear << resolution10bit; |
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QTest::addRow("BT709 (PQ) <-> BT2020 (linear)") << NamedColorimetry::BT709 << NamedTransferFunction::PerceptualQuantizer << NamedColorimetry::BT2020 << NamedTransferFunction::linear << 3 * resolution10bit; |
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} |
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void TestColorspaces::roundtripConversion() |
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{ |
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QFETCH(NamedColorimetry, srcColorimetry); |
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QFETCH(NamedTransferFunction, srcTransferFunction); |
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QFETCH(NamedColorimetry, dstColorimetry); |
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QFETCH(NamedTransferFunction, dstTransferFunction); |
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QFETCH(double, requiredAccuracy); |
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const auto src = ColorDescription(srcColorimetry, srcTransferFunction, 100, 0, 100, 100, 0); |
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const auto dst = ColorDescription(dstColorimetry, dstTransferFunction, 100, 0, 100, 100, 0); |
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const QVector3D red(1, 0, 0); |
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const QVector3D green(0, 1, 0); |
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const QVector3D blue(0, 0, 1); |
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const QVector3D white(1, 1, 1); |
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QVERIFY(compareVectors(dst.mapTo(src.mapTo(red, dst), src), red, requiredAccuracy)); |
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QVERIFY(compareVectors(dst.mapTo(src.mapTo(green, dst), src), green, requiredAccuracy)); |
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QVERIFY(compareVectors(dst.mapTo(src.mapTo(blue, dst), src), blue, requiredAccuracy)); |
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QVERIFY(compareVectors(dst.mapTo(src.mapTo(white, dst), src), white, requiredAccuracy)); |
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} |
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QTEST_MAIN(TestColorspaces) |
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#include "test_colorspaces.moc"
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