diff options
Diffstat (limited to 'src/gui/painting/qrgbafloat.h')
-rw-r--r-- | src/gui/painting/qrgbafloat.h | 136 |
1 files changed, 61 insertions, 75 deletions
diff --git a/src/gui/painting/qrgbafloat.h b/src/gui/painting/qrgbafloat.h index 8d81850b4d..da74328f71 100644 --- a/src/gui/painting/qrgbafloat.h +++ b/src/gui/painting/qrgbafloat.h @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2021 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://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 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #ifndef QRGBAFLOAT_H #define QRGBAFLOAT_H @@ -55,7 +19,13 @@ class alignas(sizeof(F) * 4) QRgbaFloat static_assert(std::is_same<F, qfloat16>::value || std::is_same<F, float>::value); public: using Type = F; +#if defined(__AVX512FP16__) && QFLOAT16_IS_NATIVE + // AVX512FP16 has multiplication instructions + using FastType = F; +#else + // use FP32 for multiplications using FastType = float; +#endif F r; F g; F b; @@ -64,21 +34,23 @@ public: static constexpr QRgbaFloat fromRgba64(quint16 red, quint16 green, quint16 blue, quint16 alpha) { + constexpr FastType scale = FastType(1.0f / 65535.0f); return QRgbaFloat{ - red * (1.0f / 65535.0f), - green * (1.0f / 65535.0f), - blue * (1.0f / 65535.0f), - alpha * (1.0f / 65535.0f) }; + F(red * scale), + F(green * scale), + F(blue * scale), + F(alpha * scale) }; } static constexpr QRgbaFloat fromRgba(quint8 red, quint8 green, quint8 blue, quint8 alpha) { + constexpr FastType scale = FastType(1.0f / 255.0f); return QRgbaFloat{ - red * (1.0f / 255.0f), - green * (1.0f / 255.0f), - blue * (1.0f / 255.0f), - alpha * (1.0f / 255.0f) }; + F(red * scale), + F(green * scale), + F(blue * scale), + F(alpha * scale) }; } static constexpr QRgbaFloat fromArgb32(uint rgb) @@ -86,36 +58,36 @@ public: return fromRgba(quint8(rgb >> 16), quint8(rgb >> 8), quint8(rgb), quint8(rgb >> 24)); } - constexpr bool isOpaque() const { return a >= 1.0f; } - constexpr bool isTransparent() const { return a <= 0.0f; } - - constexpr FastType red() const { return r; } - constexpr FastType green() const { return g; } - constexpr FastType blue() const { return b; } - constexpr FastType alpha() const { return a; } - void setRed(FastType _red) { r = _red; } - void setGreen(FastType _green) { g = _green; } - void setBlue(FastType _blue) { b = _blue; } - void setAlpha(FastType _alpha) { a = _alpha; } - - constexpr FastType redNormalized() const { return std::clamp(static_cast<FastType>(r), 0.0f, 1.0f); } - constexpr FastType greenNormalized() const { return std::clamp(static_cast<FastType>(g), 0.0f, 1.0f); } - constexpr FastType blueNormalized() const { return std::clamp(static_cast<FastType>(b), 0.0f, 1.0f); } - constexpr FastType alphaNormalized() const { return std::clamp(static_cast<FastType>(a), 0.0f, 1.0f); } - - constexpr quint8 red8() const { return std::lround(redNormalized() * 255.0f); } - constexpr quint8 green8() const { return std::lround(greenNormalized() * 255.0f); } - constexpr quint8 blue8() const { return std::lround(blueNormalized() * 255.0f); } - constexpr quint8 alpha8() const { return std::lround(alphaNormalized() * 255.0f); } + constexpr bool isOpaque() const { return a >= FastType(1.0f); } + constexpr bool isTransparent() const { return a <= FastType(0.0f); } + + constexpr float red() const { return r; } + constexpr float green() const { return g; } + constexpr float blue() const { return b; } + constexpr float alpha() const { return a; } + void setRed(float _red) { r = F(_red); } + void setGreen(float _green) { g = F(_green); } + void setBlue(float _blue) { b = F(_blue); } + void setAlpha(float _alpha) { a = F(_alpha); } + + constexpr float redNormalized() const { return clamp01(r); } + constexpr float greenNormalized() const { return clamp01(g); } + constexpr float blueNormalized() const { return clamp01(b); } + constexpr float alphaNormalized() const { return clamp01(a); } + + constexpr quint8 red8() const { return qRound(redNormalized() * FastType(255.0f)); } + constexpr quint8 green8() const { return qRound(greenNormalized() * FastType(255.0f)); } + constexpr quint8 blue8() const { return qRound(blueNormalized() * FastType(255.0f)); } + constexpr quint8 alpha8() const { return qRound(alphaNormalized() * FastType(255.0f)); } constexpr uint toArgb32() const { return uint((alpha8() << 24) | (red8() << 16) | (green8() << 8) | blue8()); } - constexpr quint16 red16() const { return std::lround(redNormalized() * 65535.0f); } - constexpr quint16 green16() const { return std::lround(greenNormalized() * 65535.0f); } - constexpr quint16 blue16() const { return std::lround(blueNormalized() * 65535.0f); } - constexpr quint16 alpha16() const { return std::lround(alphaNormalized() * 65535.0f); } + constexpr quint16 red16() const { return qRound(redNormalized() * FastType(65535.0f)); } + constexpr quint16 green16() const { return qRound(greenNormalized() * FastType(65535.0f)); } + constexpr quint16 blue16() const { return qRound(blueNormalized() * FastType(65535.0f)); } + constexpr quint16 alpha16() const { return qRound(alphaNormalized() * FastType(65535.0f)); } constexpr Q_ALWAYS_INLINE QRgbaFloat premultiplied() const { @@ -123,12 +95,26 @@ public: } constexpr Q_ALWAYS_INLINE QRgbaFloat unpremultiplied() const { - if (a <= 0.0f) - return QRgbaFloat{0.0f, 0.0f, 0.0f, 0.0f}; - if (a >= 1.0f) + if (a <= F{0.0f}) + return QRgbaFloat{}; // default-initialization: zeroes + if (a >= F{1.0f}) return *this; const FastType ia = 1.0f / a; - return QRgbaFloat{r * ia, g * ia, b * ia, a}; + return QRgbaFloat{F(r * ia), F(g * ia), F(b * ia), F(a)}; + } + constexpr bool operator==(QRgbaFloat f) const + { + return r == f.r && g == f.g && b == f.b && a == f.a; + } + constexpr bool operator!=(QRgbaFloat f) const + { + return !(*this == f); + } + +private: + constexpr static FastType clamp01(Type f) + { + return std::clamp(FastType(f), FastType(0.0f), FastType(1.0f)); } }; |