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Diffstat (limited to 'src/gui/painting/qrgba64_p.h')
| -rw-r--r-- | src/gui/painting/qrgba64_p.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/gui/painting/qrgba64_p.h b/src/gui/painting/qrgba64_p.h new file mode 100644 index 0000000000..c6cbe666ac --- /dev/null +++ b/src/gui/painting/qrgba64_p.h @@ -0,0 +1,120 @@ +/**************************************************************************** +** +** 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 |