From 3ce88e13b9cc56e00bc3f075e9649c6b291ae01c Mon Sep 17 00:00:00 2001 From: Allan Sandfeld Jensen Date: Mon, 9 Mar 2015 10:16:18 +0100 Subject: Add AVX2 autovectorized versions of premultiply Following up on using GCC's autovectorizing for faster SSE4.1 premultiply, this patch adds specialized autovectorized versions of premultiply for AVX2, giving another almost doubling in speed. To make the speed up for AVX2 and also SSE4_1 available to non-GCC compilers, the target-specific methods have been moved to separate files. Change-Id: I97ce05be67f4adeeb9a096eef80fd5fb662099f3 Reviewed-by: Gunnar Sletta --- src/gui/image/qimage_avx2.cpp | 61 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 src/gui/image/qimage_avx2.cpp (limited to 'src/gui/image/qimage_avx2.cpp') diff --git a/src/gui/image/qimage_avx2.cpp b/src/gui/image/qimage_avx2.cpp new file mode 100644 index 0000000000..c52baec948 --- /dev/null +++ b/src/gui/image/qimage_avx2.cpp @@ -0,0 +1,61 @@ +/**************************************************************************** +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include +#include +#include +#include + +#ifdef QT_COMPILER_SUPPORTS_AVX2 + +QT_BEGIN_NAMESPACE + +void convert_ARGB_to_ARGB_PM_avx2(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags) +{ + Q_ASSERT(src->format == QImage::Format_ARGB32 || src->format == QImage::Format_RGBA8888); + Q_ASSERT(dest->format == QImage::Format_ARGB32_Premultiplied || dest->format == QImage::Format_RGBA8888_Premultiplied); + Q_ASSERT(src->width == dest->width); + Q_ASSERT(src->height == dest->height); + + const uint *src_data = (uint *) src->data; + uint *dest_data = (uint *) dest->data; + for (int i = 0; i < src->height; ++i) { + qt_convertARGB32ToARGB32PM(dest_data, src_data, src->width); + src_data += src->bytes_per_line >> 2; + dest_data += dest->bytes_per_line >> 2; + } +} + +QT_END_NAMESPACE + +#endif // QT_COMPILER_SUPPORTS_AVX2 -- cgit v1.2.3