Long live Qt 4.5!

1 files changed, 211 insertions, 0 deletions

diff --git a/src/gui/painting/qdrawhelper_sse2.cpp b/src/gui/painting/qdrawhelper_sse2.cpp
new file mode 100644
index 0000000..a66284e
--- /dev/null
+++ b/src/gui/painting/qdrawhelper_sse2.cpp
@@ -0,0 +1,211 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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