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++ // Copyright (C) 2024 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include "../effectlib/oitcommon.glsllib"
++
++ #if QSSG_OIT_METHOD == QSSG_OIT_WEIGHTED_BLENDED
++
++ float qt_transparencyWeight(const float z, const float a, const float depthRange)
++ {
++ const float colorResistance = 1.0;
++ const float rangeAdjustment = 0.3;
++ const float orderingRange = 4.0;
++ return pow(a, colorResistance) * clamp(rangeAdjustment / (1e-5 + pow(z / depthRange, orderingRange)), 1e-2, 3e3);
++ }
++
++ #endif // QSSG_OIT_METHOD == QSSG_OIT_WEIGHTED_BLENDED
++