| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** This file may be used under the terms of the GNU Lesser General Public |
| ** License version 2.1 as published by the Free Software Foundation and |
| ** appearing in the file LICENSE.LGPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU Lesser |
| ** General Public License version 2.1 requirements will be met: |
| ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
| ** |
| ** In addition, as a special exception, Nokia gives you certain additional |
| ** rights. These rights are described in the Nokia Qt LGPL Exception |
| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
| ** Public License version 3.0 requirements will be met: |
| ** http://www.gnu.org/copyleft/gpl.html. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qimage.h" |
| #include <private/qimage_p.h> |
| #include <private/qsimd_p.h> |
| #include <private/qdrawhelper_p.h> |
| #include <private/qdrawingprimitive_sse2_p.h> |
| |
| #ifdef QT_HAVE_SSE2 |
| |
| QT_BEGIN_NAMESPACE |
| |
| bool convert_ARGB_to_ARGB_PM_inplace_sse2(QImageData *data, Qt::ImageConversionFlags) |
| { |
| Q_ASSERT(data->format == QImage::Format_ARGB32); |
| |
| // extra pixels on each line |
| const int spare = data->width & 3; |
| // width in pixels of the pad at the end of each line |
| const int pad = (data->bytes_per_line >> 2) - data->width; |
| const int iter = data->width >> 2; |
| int height = data->height; |
| |
| const __m128i alphaMask = _mm_set1_epi32(0xff000000); |
| const __m128i nullVector = _mm_setzero_si128(); |
| const __m128i half = _mm_set1_epi16(0x80); |
| const __m128i colorMask = _mm_set1_epi32(0x00ff00ff); |
| |
| __m128i *d = reinterpret_cast<__m128i*>(data->data); |
| while (height--) { |
| const __m128i *end = d + iter; |
| |
| for (; d != end; ++d) { |
| const __m128i srcVector = _mm_loadu_si128(d); |
| const __m128i srcVectorAlpha = _mm_and_si128(srcVector, alphaMask); |
| if (_mm_movemask_epi8(_mm_cmpeq_epi32(srcVectorAlpha, alphaMask)) == 0xffff) { |
| // opaque, data is unchanged |
| } else if (_mm_movemask_epi8(_mm_cmpeq_epi32(srcVectorAlpha, nullVector)) == 0xffff) { |
| // fully transparent |
| _mm_storeu_si128(d, nullVector); |
| } else { |
| __m128i alphaChannel = _mm_srli_epi32(srcVector, 24); |
| alphaChannel = _mm_or_si128(alphaChannel, _mm_slli_epi32(alphaChannel, 16)); |
| |
| __m128i result; |
| BYTE_MUL_SSE2(result, srcVector, alphaChannel, colorMask, half); |
| result = _mm_or_si128(_mm_andnot_si128(alphaMask, result), srcVectorAlpha); |
| _mm_storeu_si128(d, result); |
| } |
| } |
| |
| QRgb *p = reinterpret_cast<QRgb*>(d); |
| QRgb *pe = p+spare; |
| for (; p != pe; ++p) { |
| if (*p < 0x00ffffff) |
| *p = 0; |
| else if (*p < 0xff000000) |
| *p = PREMUL(*p); |
| } |
| |
| d = reinterpret_cast<__m128i*>(p+pad); |
| } |
| |
| data->format = QImage::Format_ARGB32_Premultiplied; |
| return true; |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT_HAVE_SSE2 |