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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <private/qdrawhelper_x86_p.h>
#ifdef QT_HAVE_SSE2
#include <private/qpaintengine_raster_p.h>
#ifdef QT_LINUXBASE
// this is an evil hack - the posix_memalign declaration in LSB
// is wrong - see http://bugs.linuxbase.org/show_bug.cgi?id=2431
# define posix_memalign _lsb_hack_posix_memalign
# include <emmintrin.h>
# undef posix_memalign
#else
# include <emmintrin.h>
#endif
QT_BEGIN_NAMESPACE
void qt_memfill32_sse2(quint32 *dest, quint32 value, int count)
{
if (count < 7) {
switch (count) {
case 6: *dest++ = value;
case 5: *dest++ = value;
case 4: *dest++ = value;
case 3: *dest++ = value;
case 2: *dest++ = value;
case 1: *dest = value;
}
return;
};
const int align = (quintptr)(dest) & 0xf;
switch (align) {
case 4: *dest++ = value; --count;
case 8: *dest++ = value; --count;
case 12: *dest++ = value; --count;
}
int count128 = count / 4;
__m128i *dst128 = reinterpret_cast<__m128i*>(dest);
const __m128i value128 = _mm_set_epi32(value, value, value, value);
int n = (count128 + 3) / 4;
switch (count128 & 0x3) {
case 0: do { _mm_store_si128(dst128++, value128);
case 3: _mm_store_si128(dst128++, value128);
case 2: _mm_store_si128(dst128++, value128);
case 1: _mm_store_si128(dst128++, value128);
} while (--n > 0);
}
const int rest = count & 0x3;
if (rest) {
switch (rest) {
case 3: dest[count - 3] = value;
case 2: dest[count - 2] = value;
case 1: dest[count - 1] = value;
}
}
}
void qt_memfill16_sse2(quint16 *dest, quint16 value, int count)
{
if (count < 3) {
switch (count) {
case 2: *dest++ = value;
case 1: *dest = value;
}
return;
}
const int align = (quintptr)(dest) & 0x3;
switch (align) {
case 2: *dest++ = value; --count;
}
const quint32 value32 = (value << 16) | value;
qt_memfill32_sse2(reinterpret_cast<quint32*>(dest), value32, count / 2);
if (count & 0x1)
dest[count - 1] = value;
}
void qt_bitmapblit32_sse2(QRasterBuffer *rasterBuffer, int x, int y,
quint32 color,
const uchar *src, int width, int height, int stride)
{
quint32 *dest = reinterpret_cast<quint32*>(rasterBuffer->scanLine(y)) + x;
const int destStride = rasterBuffer->bytesPerLine() / sizeof(quint32);
const __m128i c128 = _mm_set1_epi32(color);
const __m128i maskmask1 = _mm_set_epi32(0x10101010, 0x20202020,
0x40404040, 0x80808080);
const __m128i maskadd1 = _mm_set_epi32(0x70707070, 0x60606060,
0x40404040, 0x00000000);
if (width > 4) {
const __m128i maskmask2 = _mm_set_epi32(0x01010101, 0x02020202,
0x04040404, 0x08080808);
const __m128i maskadd2 = _mm_set_epi32(0x7f7f7f7f, 0x7e7e7e7e,
0x7c7c7c7c, 0x78787878);
while (height--) {
for (int x = 0; x < width; x += 8) {
const quint8 s = src[x >> 3];
if (!s)
continue;
__m128i mask1 = _mm_set1_epi8(s);
__m128i mask2 = mask1;
mask1 = _mm_and_si128(mask1, maskmask1);
mask1 = _mm_add_epi8(mask1, maskadd1);
_mm_maskmoveu_si128(c128, mask1, (char*)(dest + x));
mask2 = _mm_and_si128(mask2, maskmask2);
mask2 = _mm_add_epi8(mask2, maskadd2);
_mm_maskmoveu_si128(c128, mask2, (char*)(dest + x + 4));
}
dest += destStride;
src += stride;
}
} else {
while (height--) {
const quint8 s = *src;
if (s) {
__m128i mask1 = _mm_set1_epi8(s);
mask1 = _mm_and_si128(mask1, maskmask1);
mask1 = _mm_add_epi8(mask1, maskadd1);
_mm_maskmoveu_si128(c128, mask1, (char*)(dest));
}
dest += destStride;
src += stride;
}
}
}
void qt_bitmapblit16_sse2(QRasterBuffer *rasterBuffer, int x, int y,
quint32 color,
const uchar *src, int width, int height, int stride)
{
const quint16 c = qt_colorConvert<quint16, quint32>(color, 0);
quint16 *dest = reinterpret_cast<quint16*>(rasterBuffer->scanLine(y)) + x;
const int destStride = rasterBuffer->bytesPerLine() / sizeof(quint16);
const __m128i c128 = _mm_set1_epi16(c);
#if defined(Q_OS_WIN)
# pragma warning(disable: 4309) // truncation of constant value
#endif
const __m128i maskmask = _mm_set_epi16(0x0101, 0x0202, 0x0404, 0x0808,
0x1010, 0x2020, 0x4040, 0x8080);
const __m128i maskadd = _mm_set_epi16(0x7f7f, 0x7e7e, 0x7c7c, 0x7878,
0x7070, 0x6060, 0x4040, 0x0000);
while (height--) {
for (int x = 0; x < width; x += 8) {
const quint8 s = src[x >> 3];
if (!s)
continue;
__m128i mask = _mm_set1_epi8(s);
mask = _mm_and_si128(mask, maskmask);
mask = _mm_add_epi8(mask, maskadd);
_mm_maskmoveu_si128(c128, mask, (char*)(dest + x));
}
dest += destStride;
src += stride;
}
}
QT_END_NAMESPACE
#endif // QT_HAVE_SSE2
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