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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QRGBA64_P_H
#define QRGBA64_P_H
#include <QtGui/qrgba64.h>
#include <QtGui/private/qdrawhelper_p.h>
#include <private/qsimd_p.h>
QT_BEGIN_NAMESPACE
inline QRgba64 combineAlpha256(QRgba64 rgba64, uint alpha256)
{
return QRgba64::fromRgba64(rgba64.red(), rgba64.green(), rgba64.blue(), (rgba64.alpha() * alpha256) >> 8);
}
inline QRgba64 multiplyAlpha256(QRgba64 rgba64, uint alpha256)
{
return QRgba64::fromRgba64((rgba64.red() * alpha256) >> 8,
(rgba64.green() * alpha256) >> 8,
(rgba64.blue() * alpha256) >> 8,
(rgba64.alpha() * alpha256) >> 8);
}
inline QRgba64 multiplyAlpha65535(QRgba64 rgba64, uint alpha65535)
{
#ifdef __SSE2__
const __m128i va = _mm_shufflelo_epi16(_mm_cvtsi32_si128(alpha65535), _MM_SHUFFLE(0, 0, 0, 0));
__m128i vs = _mm_loadl_epi64((__m128i*)&rgba64);
vs = _mm_unpacklo_epi16(_mm_mullo_epi16(vs, va), _mm_mulhi_epu16(vs, va));
vs = _mm_add_epi32(vs, _mm_srli_epi32(vs, 16));
vs = _mm_add_epi32(vs, _mm_set1_epi32(0x8000));
vs = _mm_srai_epi32(vs, 16);
vs = _mm_packs_epi32(vs, _mm_setzero_si128());
_mm_storel_epi64((__m128i*)&rgba64, vs);
return rgba64;
#else
return QRgba64::fromRgba64(qt_div_65535(rgba64.red() * alpha65535),
qt_div_65535(rgba64.green() * alpha65535),
qt_div_65535(rgba64.blue() * alpha65535),
qt_div_65535(rgba64.alpha() * alpha65535));
#endif
}
inline QRgba64 multiplyAlpha255(QRgba64 rgba64, uint alpha255)
{
#ifdef __SSE2__
return multiplyAlpha65535(rgba64, alpha255 * 257);
#else
return QRgba64::fromRgba64(qt_div_255(rgba64.red() * alpha255),
qt_div_255(rgba64.green() * alpha255),
qt_div_255(rgba64.blue() * alpha255),
qt_div_255(rgba64.alpha() * alpha255));
#endif
}
inline QRgba64 interpolate256(QRgba64 x, uint alpha1, QRgba64 y, uint alpha2)
{
return QRgba64::fromRgba64(multiplyAlpha256(x, alpha1) + multiplyAlpha256(y, alpha2));
}
inline QRgba64 interpolate255(QRgba64 x, uint alpha1, QRgba64 y, uint alpha2)
{
return QRgba64::fromRgba64(multiplyAlpha255(x, alpha1) + multiplyAlpha255(y, alpha2));
}
inline QRgba64 interpolate65535(QRgba64 x, uint alpha1, QRgba64 y, uint alpha2)
{
return QRgba64::fromRgba64(multiplyAlpha65535(x, alpha1) + multiplyAlpha65535(y, alpha2));
}
inline QRgba64 addWithSaturation(QRgba64 a, QRgba64 b)
{
#if defined(__SSE2__) && defined(Q_PROCESSOR_X86_64)
__m128i va = _mm_cvtsi64_si128((quint64)a);
__m128i vb = _mm_cvtsi64_si128((quint64)b);
va = _mm_adds_epu16(va, vb);
return QRgba64::fromRgba64(_mm_cvtsi128_si64(va));
#else
return QRgba64::fromRgba64(qMin(a.red() + b.red(), 65535),
qMin(a.green() + b.green(), 65535),
qMin(a.blue() + b.blue(), 65535),
qMin(a.alpha() + b.alpha(), 65535));
#endif
}
QT_END_NAMESPACE
#endif // QRGBA64_P_H
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