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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDRAWHELPER_SSE_P_H
#define QDRAWHELPER_SSE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qdrawhelper_mmx_p.h>
#ifdef QT_HAVE_SSE
#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 <xmmintrin.h>
# undef posix_memalign
#else
# include <xmmintrin.h>
#endif
QT_BEGIN_NAMESPACE
#ifndef _MM_SHUFFLE
#define _MM_SHUFFLE(fp3,fp2,fp1,fp0) \
(((fp3) << 6) | ((fp2) << 4) | ((fp1) << 2) | (fp0))
#endif
struct QSSEIntrinsics : public QMMXIntrinsics
{
static inline m64 alpha(m64 x) {
return _mm_shuffle_pi16 (x, _MM_SHUFFLE(3, 3, 3, 3));
}
static inline m64 _load_alpha(uint x, const m64 &mmx_0x0000) {
m64 t = _mm_unpacklo_pi8(_mm_cvtsi32_si64(x), mmx_0x0000);
return _mm_shuffle_pi16 (t, _MM_SHUFFLE(0, 0, 0, 0));
}
};
template <class MM>
inline void qt_memfill32_sse_template(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;
};
__m64 *dst64 = reinterpret_cast<__m64*>(dest);
const __m64 value64 = _mm_set_pi32(value, value);
int count64 = count / 2;
int n = (count64 + 3) / 4;
switch (count64 & 0x3) {
case 0: do { _mm_stream_pi(dst64++, value64);
case 3: _mm_stream_pi(dst64++, value64);
case 2: _mm_stream_pi(dst64++, value64);
case 1: _mm_stream_pi(dst64++, value64);
} while (--n > 0);
}
if (count & 0x1)
dest[count - 1] = value;
MM::end();
}
template <class MM>
inline void qt_bitmapblit16_sse_template(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 __m64 c64 = _mm_set1_pi16(c);
#if defined(Q_OS_WIN)
# pragma warning(disable: 4309) // truncation of constant value
#endif
const __m64 maskmask1 = _mm_set_pi16(0x1010, 0x2020, 0x4040, 0x8080);
const __m64 maskadd1 = _mm_set_pi16(0x7070, 0x6060, 0x4040, 0x0000);
if (width > 4) {
const __m64 maskmask2 = _mm_set_pi16(0x0101, 0x0202, 0x0404, 0x0808);
const __m64 maskadd2 = _mm_set_pi16(0x7f7f, 0x7e7e, 0x7c7c, 0x7878);
while (height--) {
for (int x = 0; x < width; x += 8) {
const quint8 s = src[x >> 3];
if (!s)
continue;
__m64 mask1 = _mm_set1_pi8(s);
__m64 mask2 = mask1;
mask1 = _m_pand(mask1, maskmask1);
mask1 = _mm_add_pi16(mask1, maskadd1);
_mm_maskmove_si64(c64, mask1, (char*)(dest + x));
mask2 = _m_pand(mask2, maskmask2);
mask2 = _mm_add_pi16(mask2, maskadd2);
_mm_maskmove_si64(c64, mask2, (char*)(dest + x + 4));
}
dest += destStride;
src += stride;
}
} else {
while (height--) {
const quint8 s = *src;
if (s) {
__m64 mask1 = _mm_set1_pi8(s);
mask1 = _m_pand(mask1, maskmask1);
mask1 = _mm_add_pi16(mask1, maskadd1);
_mm_maskmove_si64(c64, mask1, (char*)(dest));
}
dest += destStride;
src += stride;
}
}
MM::end();
}
QT_END_NAMESPACE
#endif // QT_HAVE_SSE
#endif // QDRAWHELPER_SSE_P_H
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