qgammatables.cpp

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5QDrawHelperGammaTables::QDrawHelperGammaTables(qreal smoothing)-
6{-
7 const qreal gray_gamma = 2.31;-
8 for (int i=0; i<256
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9 qt_pow_gamma[i] = uint(qRound(qPow(i / qreal(255.), gray_gamma) * 2047));
never executed: qt_pow_gamma[i] = uint(qRound(qPow(i / qreal(255.), gray_gamma) * 2047));
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10 for (int i=0; i<2048
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11 qt_pow_invgamma[i] = uchar(qRound(qPow(i / qreal(2047.0), 1 / gray_gamma) * 255));
never executed: qt_pow_invgamma[i] = uchar(qRound(qPow(i / qreal(2047.0), 1 / gray_gamma) * 255));
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13 refresh(smoothing);-
14}
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16void QDrawHelperGammaTables::refresh(qreal smoothing)-
17{-
18 for (int i=0; i<256
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19 qt_pow_rgb_gamma[i] = uchar(qRound(qPow(i / qreal(255.0), smoothing) * 255));-
20 qt_pow_rgb_invgamma[i] = uchar(qRound(qPow(i / qreal(255.), 1 / smoothing) * 255));-
21 }
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22}
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