Merge remote branch 'qt/4.7' into lighthouse-4.7

Conflicts:
	src/gui/painting/qpdf.cpp

22 files changed, 207 insertions, 274 deletions

diff --git a/src/gui/painting/qbezier.cpp b/src/gui/painting/qbezier.cpp
index 2a9b31a..54c81ba 100644
--- a/src/gui/painting/qbezier.cpp
+++ b/src/gui/painting/qbezier.cpp
@@ -293,36 +293,6 @@ static ShiftResult good_offset(const QBezier *b1, const QBezier *b2, qreal offse
     return Ok;
 }
 
-static inline QLineF qline_shifted(const QPointF &p1, const QPointF &p2, qreal offset)
-{
-    QLineF l(p1, p2);
-    QLineF ln = l.normalVector().unitVector();
-    l.translate(ln.dx() * offset, ln.dy() * offset);
-    return l;
-}
-
-static bool qbezier_is_line(QPointF *points, int pointCount)
-{
-    Q_ASSERT(pointCount > 2);
-
-    qreal dx13 = points[2].x() - points[0].x();
-    qreal dy13 = points[2].y() - points[0].y();
-
-    qreal dx12 = points[1].x() - points[0].x();
-    qreal dy12 = points[1].y() - points[0].y();
-
-    if (pointCount == 3) {
-        return qFuzzyCompare(dx12 * dy13, dx13 * dy12);
-    } else if (pointCount == 4) {
-        qreal dx14 = points[3].x() - points[0].x();
-        qreal dy14 = points[3].y() - points[0].y();
-
-        return (qFuzzyCompare(dx12 * dy13, dx13 * dy12) && qFuzzyCompare(dx12 * dy14, dx14 * dy12));
-    }
-
-    return false;
-}
-
 static ShiftResult shift(const QBezier *orig, QBezier *shifted, qreal offset, qreal threshold)
 {
     int map[4];
@@ -353,17 +323,6 @@ static ShiftResult shift(const QBezier *orig, QBezier *shifted, qreal offset, qr
     if (np == 1)
         return Discard;
 
-    // We need to specialcase lines of 3 or 4 points due to numerical
-    // instability in intersections below
-    if (np > 2 && qbezier_is_line(points, np)) {
-        if (points[0] == points[np-1])
-            return Discard;
-
-        QLineF l = qline_shifted(points[0], points[np-1], offset);
-        *shifted = QBezier::fromPoints(l.p1(), l.pointAt(qreal(0.33)), l.pointAt(qreal(0.66)), l.p2());
-        return Ok;
-    }
-
     QRectF b = orig->bounds();
     if (np == 4 && b.width() < .1*offset && b.height() < .1*offset) {
         qreal l = (orig->x1 - orig->x2)*(orig->x1 - orig->x2) +
diff --git a/src/gui/painting/qbrush.cpp b/src/gui/painting/qbrush.cpp
index d3061d8..d0788c7 100644
--- a/src/gui/painting/qbrush.cpp
+++ b/src/gui/painting/qbrush.cpp
@@ -1218,17 +1218,16 @@ QDataStream &operator>>(QDataStream &s, QBrush &b)
     \o QConicalGradient
     \endtable
 
-    The colors in a gradient is defined using stop points of the
-    QGradientStop type, i.e. a position and a color.  Use the
-    setColorAt() function to define a single stop
-    point. Alternatively, use the setStops() function to define
-    several stop points in one go. Note that the latter function \e
-    replaces the current set of stop points.
+    The colors in a gradient are defined using stop points of the
+    QGradientStop type; i.e., a position and a color. Use the setColorAt()
+    function to define a single stop point. Alternatively, use the
+    setStops() function to define several stop points in one go. Note that
+    the latter function \e replaces the current set of stop points.
 
     It is the gradient's complete set of stop points (accessible
     through the stops() function) that describes how the gradient area
-    should be filled. If no stop points have been specified, a
-    gradient of black at 0 to white at 1 is used.
+    should be filled. If no stop points have been specified, a gradient
+    of black at 0 to white at 1 is used.
 
     A diagonal linear gradient from black at (100, 100) to white at
     (200, 200) could be specified like this:
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp
index bd5b0bd..5f190ba 100644
--- a/src/gui/painting/qdrawhelper.cpp
+++ b/src/gui/painting/qdrawhelper.cpp
@@ -4835,7 +4835,7 @@ void QT_FASTCALL blendUntransformed_dest24(DST *dest, const SRC *src,
 
         if (SRC::hasAlpha()) {
             while (length >= 4) {
-                const quint32 alpha = BYTE_MUL(uint(alpha_4(src)), uint(coverage));
+                const quint32 alpha = QT_PREPEND_NAMESPACE(BYTE_MUL)(uint(alpha_4(src)), uint(coverage));
                 if (alpha)
                     interpolate_pixel_4(dest, src, alpha);
                 length -= 4;
diff --git a/src/gui/painting/qdrawhelper_sse2.cpp b/src/gui/painting/qdrawhelper_sse2.cpp
index ba2ba32..f97d865 100644
--- a/src/gui/painting/qdrawhelper_sse2.cpp
+++ b/src/gui/painting/qdrawhelper_sse2.cpp
@@ -266,10 +266,10 @@ void qt_memfill32_sse2(quint32 *dest, quint32 value, int count)
 
     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);
+    case 0: do { _mm_stream_si128(dst128++, value128);
+    case 3:      _mm_stream_si128(dst128++, value128);
+    case 2:      _mm_stream_si128(dst128++, value128);
+    case 1:      _mm_stream_si128(dst128++, value128);
     } while (--n > 0);
     }
 
@@ -300,11 +300,14 @@ void QT_FASTCALL comp_func_solid_SourceOver_sse2(uint *destPixels, int length, u
         const __m128i half = _mm_set1_epi16(0x80);
         const __m128i minusAlphaOfColorVector = _mm_set1_epi16(minusAlphaOfColor);
 
+        ALIGNMENT_PROLOGUE_16BYTES(dst, x, length)
+            destPixels[x] = color + BYTE_MUL(destPixels[x], minusAlphaOfColor);
+
         for (; x < length-3; x += 4) {
-            __m128i dstVector = _mm_loadu_si128((__m128i *)&dst[x]);
+            __m128i dstVector = _mm_load_si128((__m128i *)&dst[x]);
             BYTE_MUL_SSE2(dstVector, dstVector, minusAlphaOfColorVector, colorMask, half);
             dstVector = _mm_add_epi8(colorVector, dstVector);
-            _mm_storeu_si128((__m128i *)&dst[x], dstVector);
+            _mm_store_si128((__m128i *)&dst[x], dstVector);
         }
         for (;x < length; ++x)
             destPixels[x] = color + BYTE_MUL(destPixels[x], minusAlphaOfColor);
diff --git a/src/gui/painting/qdrawhelper_ssse3.cpp b/src/gui/painting/qdrawhelper_ssse3.cpp
index 4cb4089..fb5602e 100644
--- a/src/gui/painting/qdrawhelper_ssse3.cpp
+++ b/src/gui/painting/qdrawhelper_ssse3.cpp
@@ -79,69 +79,6 @@ inline static void blend_pixel(quint32 &dst, const quint32 src)
     }
 
 
-#define BLEND_SOURCE_OVER_ARGB32_FIRST_ROW_SSSE3(dst, src, length, nullVector, half, one, colorMask, alphaMask) { \
-    int x = 0; \
-\
-    /* First, get dst aligned. */ \
-    const int offsetToAlignOn16Bytes = (4 - ((reinterpret_cast<quintptr>(dst) >> 2) & 0x3)) & 0x3;\
-    const int prologLength = qMin(length, offsetToAlignOn16Bytes);\
-\
-    for (; x < prologLength; ++x) {\
-        blend_pixel(dst[x], src[x]); \
-    } \
-\
-    const int minusOffsetToAlignSrcOn16Bytes = (reinterpret_cast<quintptr>(&(src[x])) >> 2) & 0x3;\
-\
-    if (!minusOffsetToAlignSrcOn16Bytes) {\
-        /* src is aligned, usual algorithm but with aligned operations.\
-           See the SSE2 version for more documentation on the algorithm itself. */\
-        const __m128i alphaShuffleMask = _mm_set_epi8(0xff,15,0xff,15,0xff,11,0xff,11,0xff,7,0xff,7,0xff,3,0xff,3);\
-        for (; x < length-3; x += 4) { \
-            const __m128i srcVector = _mm_load_si128((__m128i *)&src[x]); \
-            const __m128i srcVectorAlpha = _mm_and_si128(srcVector, alphaMask); \
-            if (_mm_movemask_epi8(_mm_cmpeq_epi32(srcVectorAlpha, alphaMask)) == 0xffff) { \
-                _mm_store_si128((__m128i *)&dst[x], srcVector); \
-            } else if (_mm_movemask_epi8(_mm_cmpeq_epi32(srcVectorAlpha, nullVector)) != 0xffff) { \
-                __m128i alphaChannel = _mm_shuffle_epi8(srcVector, alphaShuffleMask); \
-                alphaChannel = _mm_sub_epi16(one, alphaChannel); \
-                const __m128i dstVector = _mm_load_si128((__m128i *)&dst[x]); \
-                __m128i destMultipliedByOneMinusAlpha; \
-                BYTE_MUL_SSE2(destMultipliedByOneMinusAlpha, dstVector, alphaChannel, colorMask, half); \
-                const __m128i result = _mm_add_epi8(srcVector, destMultipliedByOneMinusAlpha); \
-                _mm_store_si128((__m128i *)&dst[x], result); \
-            } \
-        } /* end for() */\
-    } else if ((length - x) >= 8) {\
-        /* We are at the first line, so "x - minusOffsetToAlignSrcOn16Bytes" could go before src, and\
-           generate an invalid access. */\
-\
-        /* We use two vectors to extract the src: prevLoaded for the first pixels, lastLoaded for the current pixels. */\
-        __m128i srcVectorPrevLoaded;\
-        if (minusOffsetToAlignSrcOn16Bytes > prologLength) {\
-            /* We go forward 4 pixels to avoid reading before src. */\
-            for (; x < prologLength + 4; ++x)\
-                blend_pixel(dst[x], src[x]); \
-        }\
-        srcVectorPrevLoaded = _mm_load_si128((__m128i *)&src[x - minusOffsetToAlignSrcOn16Bytes]);\
-        const int palignrOffset = minusOffsetToAlignSrcOn16Bytes << 2;\
-\
-        const __m128i alphaShuffleMask = _mm_set_epi8(0xff,15,0xff,15,0xff,11,0xff,11,0xff,7,0xff,7,0xff,3,0xff,3);\
-        switch (palignrOffset) {\
-        case 4:\
-            BLENDING_LOOP(4, length)\
-            break;\
-        case 8:\
-            BLENDING_LOOP(8, length)\
-            break;\
-        case 12:\
-            BLENDING_LOOP(12, length)\
-            break;\
-        }\
-    }\
-    for (; x < length; ++x) \
-        blend_pixel(dst[x], src[x]); \
-}
-
 // Basically blend src over dst with the const alpha defined as constAlphaVector.
 // nullVector, half, one, colorMask are constant accross the whole image/texture, and should be defined as:
 //const __m128i nullVector = _mm_set1_epi32(0);
@@ -153,7 +90,7 @@ inline static void blend_pixel(quint32 &dst, const quint32 src)
 // The computation being done is:
 // result = s + d * (1-alpha)
 // with shortcuts if fully opaque or fully transparent.
-#define BLEND_SOURCE_OVER_ARGB32_MAIN_SSSE3(dst, src, length, nullVector, half, one, colorMask, alphaMask) { \
+#define BLEND_SOURCE_OVER_ARGB32_SSSE3(dst, src, length, nullVector, half, one, colorMask, alphaMask) { \
     int x = 0; \
 \
     /* First, get dst aligned. */ \
@@ -218,14 +155,8 @@ void qt_blend_argb32_on_argb32_ssse3(uchar *destPixels, int dbpl,
         const __m128i one = _mm_set1_epi16(0xff);
         const __m128i colorMask = _mm_set1_epi32(0x00ff00ff);
 
-        // We have to unrol the first row in order to deal with the load on unaligned data
-        // prior to the src pointer.
-        BLEND_SOURCE_OVER_ARGB32_FIRST_ROW_SSSE3(dst, src, w, nullVector, half, one, colorMask, alphaMask);
-        dst = (quint32 *)(((uchar *) dst) + dbpl);
-        src = (const quint32 *)(((const uchar *) src) + sbpl);
-
-        for (int y = 1; y < h; ++y) {
-            BLEND_SOURCE_OVER_ARGB32_MAIN_SSSE3(dst, src, w, nullVector, half, one, colorMask, alphaMask);
+        for (int y = 0; y < h; ++y) {
+            BLEND_SOURCE_OVER_ARGB32_SSSE3(dst, src, w, nullVector, half, one, colorMask, alphaMask);
             dst = (quint32 *)(((uchar *) dst) + dbpl);
             src = (const quint32 *)(((const uchar *) src) + sbpl);
         }
diff --git a/src/gui/painting/qgraphicssystem_runtime.cpp b/src/gui/painting/qgraphicssystem_runtime.cpp
index 2828e9d..a9fbbee 100644
--- a/src/gui/painting/qgraphicssystem_runtime.cpp
+++ b/src/gui/painting/qgraphicssystem_runtime.cpp
@@ -94,7 +94,8 @@ QRuntimePixmapData::QRuntimePixmapData(const QRuntimeGraphicsSystem *gs, PixelTy
 
 QRuntimePixmapData::~QRuntimePixmapData()
 {
-    m_graphicsSystem->removePixmapData(this);
+    if (QApplicationPrivate::graphics_system)
+        m_graphicsSystem->removePixmapData(this);
     delete m_data;
 }
 
@@ -258,7 +259,8 @@ QRuntimeWindowSurface::QRuntimeWindowSurface(const QRuntimeGraphicsSystem *gs, Q
 
 QRuntimeWindowSurface::~QRuntimeWindowSurface()
 {
-    m_graphicsSystem->removeWindowSurface(this);
+    if (QApplicationPrivate::graphics_system)
+        m_graphicsSystem->removeWindowSurface(this);
 }
 
 QPaintDevice *QRuntimeWindowSurface::paintDevice()
diff --git a/src/gui/painting/qgraphicssystem_runtime_p.h b/src/gui/painting/qgraphicssystem_runtime_p.h
index 0232241..421fbeb 100644
--- a/src/gui/painting/qgraphicssystem_runtime_p.h
+++ b/src/gui/painting/qgraphicssystem_runtime_p.h
@@ -177,6 +177,7 @@ private:
 
     friend class QRuntimePixmapData;
     friend class QRuntimeWindowSurface;
+    friend class QMeeGoGraphicsSystem;
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/painting/qgrayraster.c b/src/gui/painting/qgrayraster.c
index 94039fb..ec9ebeb 100644
--- a/src/gui/painting/qgrayraster.c
+++ b/src/gui/painting/qgrayraster.c
@@ -233,7 +233,7 @@
   /* new algorithms                                                       */
 
   typedef int   TCoord;   /* integer scanline/pixel coordinate */
-  typedef long  TPos;     /* sub-pixel coordinate              */
+  typedef int   TPos;     /* sub-pixel coordinate              */
 
   /* determine the type used to store cell areas.  This normally takes at */
   /* least PIXEL_BITS*2 + 1 bits.  On 16-bit systems, we need to use      */
@@ -317,6 +317,7 @@
     PCell*     ycells;
     int        ycount;
 
+    int        skip_spans;
   } TWorker, *PWorker;
 
 
@@ -324,13 +325,19 @@
   {
     void*    buffer;
     long     buffer_size;
+    long     buffer_allocated_size;
     int      band_size;
     void*    memory;
     PWorker  worker;
 
   } TRaster, *PRaster;
 
-
+  int q_gray_rendered_spans(TRaster *raster)
+  {
+    if ( raster && raster->worker )
+      return raster->worker->skip_spans > 0 ? 0 : -raster->worker->skip_spans;
+    return 0;
+  }
 
   /*************************************************************************/
   /*                                                                       */
@@ -538,7 +545,7 @@
                                  TCoord  y2 )
   {
     TCoord  ex1, ex2, fx1, fx2, delta;
-    long    p, first, dx;
+    int     p, first, dx;
     int     incr, lift, mod, rem;
 
 
@@ -643,7 +650,7 @@
   {
     TCoord  ey1, ey2, fy1, fy2;
     TPos    dx, dy, x, x2;
-    long    p, first;
+    int     p, first;
     int     delta, rem, mod, lift, incr;
 
 
@@ -1178,6 +1185,7 @@
   {
     QT_FT_Span*  span;
     int       coverage;
+    int       skip;
 
 
     /* compute the coverage line's coverage, depending on the    */
@@ -1228,9 +1236,16 @@
 
       if ( ras.num_gray_spans >= QT_FT_MAX_GRAY_SPANS )
       {
-        if ( ras.render_span )
-          ras.render_span( ras.num_gray_spans, ras.gray_spans,
+        if ( ras.render_span && ras.num_gray_spans > ras.skip_spans )
+        {
+          skip = ras.skip_spans > 0 ? ras.skip_spans : 0;
+          ras.render_span( ras.num_gray_spans - skip,
+                           ras.gray_spans + skip,
                            ras.render_span_data );
+        }
+
+        ras.skip_spans -= ras.num_gray_spans;
+
         /* ras.render_span( span->y, ras.gray_spans, count ); */
 
 #ifdef DEBUG_GRAYS
@@ -1600,7 +1615,8 @@
     TBand* volatile  band;
     int volatile     n, num_bands;
     TPos volatile    min, max, max_y;
-    QT_FT_BBox*         clip;
+    QT_FT_BBox*      clip;
+    int              skip;
 
     ras.num_gray_spans = 0;
 
@@ -1670,7 +1686,7 @@
         {
           PCell  cells_max;
           int    yindex;
-          long   cell_start, cell_end, cell_mod;
+          int    cell_start, cell_end, cell_mod;
 
 
           ras.ycells = (PCell*)ras.buffer;
@@ -1741,9 +1757,15 @@
       }
     }
 
-    if ( ras.render_span && ras.num_gray_spans > 0 )
-        ras.render_span( ras.num_gray_spans,
-                         ras.gray_spans, ras.render_span_data );
+    if ( ras.render_span && ras.num_gray_spans > ras.skip_spans )
+    {
+        skip = ras.skip_spans > 0 ? ras.skip_spans : 0;
+        ras.render_span( ras.num_gray_spans - skip,
+                         ras.gray_spans + skip,
+                         ras.render_span_data );
+    }
+
+    ras.skip_spans -= ras.num_gray_spans;
 
     if ( ras.band_shoot > 8 && ras.band_size > 16 )
       ras.band_size = ras.band_size / 2;
@@ -1764,10 +1786,13 @@
     if ( !raster || !raster->buffer || !raster->buffer_size )
       return ErrRaster_Invalid_Argument;
 
+    if ( raster->worker )
+      raster->worker->skip_spans = params->skip_spans;
+
     // If raster object and raster buffer are allocated, but
     // raster size isn't of the minimum size, indicate out of
     // memory.
-    if (raster && raster->buffer && raster->buffer_size < MINIMUM_POOL_SIZE )
+    if (raster->buffer_allocated_size < MINIMUM_POOL_SIZE )
       return ErrRaster_OutOfMemory;
 
     /* return immediately if the outline is empty */
@@ -1906,6 +1931,7 @@
         rast->buffer_size = 0;
         rast->worker      = NULL;
       }
+      rast->buffer_allocated_size = pool_size;
     }
   }
 
diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp
index 7dee7e4..589e0c8 100644
--- a/src/gui/painting/qpaintengine_raster.cpp
+++ b/src/gui/painting/qpaintengine_raster.cpp
@@ -4177,6 +4177,10 @@ void QRasterPaintEnginePrivate::rasterize(QT_FT_Outline *outline,
     rasterize(outline, callback, (void *)spanData, rasterBuffer);
 }
 
+extern "C" {
+    int q_gray_rendered_spans(QT_FT_Raster raster);
+}
+
 void QRasterPaintEnginePrivate::rasterize(QT_FT_Outline *outline,
                                           ProcessSpans callback,
                                           void *userData, QRasterBuffer *)
@@ -4241,10 +4245,13 @@ void QRasterPaintEnginePrivate::rasterize(QT_FT_Outline *outline,
     bool done = false;
     int error;
 
+    int rendered_spans = 0;
+
     while (!done) {
 
         rasterParams.flags |= (QT_FT_RASTER_FLAG_AA | QT_FT_RASTER_FLAG_DIRECT);
         rasterParams.gray_spans = callback;
+        rasterParams.skip_spans = rendered_spans;
         error = qt_ft_grays_raster.raster_render(*grayRaster.data(), &rasterParams);
 
         // Out of memory, reallocate some more and try again...
@@ -4255,6 +4262,8 @@ void QRasterPaintEnginePrivate::rasterize(QT_FT_Outline *outline,
                 break;
             }
 
+            rendered_spans += q_gray_rendered_spans(*grayRaster.data());
+
 #if defined(Q_WS_WIN64)
             _aligned_free(rasterPoolBase);
 #else
diff --git a/src/gui/painting/qpaintengineex.cpp b/src/gui/painting/qpaintengineex.cpp
index 881bd6e..c1e3d66 100644
--- a/src/gui/painting/qpaintengineex.cpp
+++ b/src/gui/painting/qpaintengineex.cpp
@@ -517,7 +517,7 @@ void QPaintEngineEx::stroke(const QVectorPath &path, const QPen &pen)
             QPainterPath painterPath = state()->matrix.map(path.convertToPainterPath());
             d->activeStroker->strokePath(painterPath, d->strokeHandler, QTransform());
         } else {
-            d->activeStroker->setCurveThresholdFromTransform(state()->matrix);
+            d->activeStroker->setCurveThresholdFromTransform(QTransform());
             d->activeStroker->begin(d->strokeHandler);
             if (types) {
                 while (points < lastPoint) {
@@ -768,7 +768,7 @@ void QPaintEngineEx::drawRoundedRect(const QRectF &rect, qreal xRadius, qreal yR
         x1, y2 - (1 - KAPPA) * yRadius,
         x1, y2 - yRadius,
         x1, y1 + yRadius,                   // LineTo
-        x1, y1 + KAPPA * yRadius,           // CurveTo
+        x1, y1 + (1 - KAPPA) * yRadius,           // CurveTo
         x1 + (1 - KAPPA) * xRadius, y1,
         x1 + xRadius, y1
     };
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index c6046ac..7fed7e4 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -2717,7 +2717,7 @@ void QPainter::setClipRect(const QRectF &rect, Qt::ClipOperation op)
     Q_D(QPainter);
 
     if (d->extended) {
-        if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
+        if ((!d->state->clipEnabled && op != Qt::NoClip) || (d->state->clipOperation == Qt::NoClip && op == Qt::UniteClip))
             op = Qt::ReplaceClip;
 
         if (!d->engine) {
@@ -2775,7 +2775,7 @@ void QPainter::setClipRect(const QRect &rect, Qt::ClipOperation op)
         return;
     }
 
-    if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
+    if ((!d->state->clipEnabled && op != Qt::NoClip) || (d->state->clipOperation == Qt::NoClip && op == Qt::UniteClip))
         op = Qt::ReplaceClip;
 
     if (d->extended) {
@@ -2830,7 +2830,7 @@ void QPainter::setClipRegion(const QRegion &r, Qt::ClipOperation op)
         return;
     }
 
-    if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
+    if ((!d->state->clipEnabled && op != Qt::NoClip) || (d->state->clipOperation == Qt::NoClip && op == Qt::UniteClip))
         op = Qt::ReplaceClip;
 
     if (d->extended) {
@@ -3235,7 +3235,7 @@ void QPainter::setClipPath(const QPainterPath &path, Qt::ClipOperation op)
         return;
     }
 
-    if (!hasClipping() && (op == Qt::IntersectClip || op == Qt::UniteClip))
+    if ((!d->state->clipEnabled && op != Qt::NoClip) || (d->state->clipOperation == Qt::NoClip && op == Qt::UniteClip))
         op = Qt::ReplaceClip;
 
     if (d->extended) {
@@ -6185,7 +6185,7 @@ void QPainter::drawText(const QRectF &r, int flags, const QString &str, QRectF *
 
     By default, QPainter draws text anti-aliased.
 
-    \note The y-position is used as the baseline of the font.
+    \note The y-position is used as the top of the font.
 
     \sa Qt::AlignmentFlag, Qt::TextFlag
 */
@@ -8798,7 +8798,7 @@ QPainterPath QPaintEngineState::clipPath() const
 }
 
 /*!
-    Returns wether clipping is enabled or not in the current paint
+    Returns whether clipping is enabled or not in the current paint
     engine state.
 
     This variable should only be used when the state() returns a
diff --git a/src/gui/painting/qpdf.cpp b/src/gui/painting/qpdf.cpp
index fdb84e0..45af03a 100644
--- a/src/gui/painting/qpdf.cpp
+++ b/src/gui/painting/qpdf.cpp
@@ -915,25 +915,6 @@ const char *QPdf::paperSizeToString(QPrinter::PaperSize paperSize)
     return psToStr[paperSize];
 }
 
-
-Q_GUI_EXPORT QByteArray QPdf::stripSpecialCharacters(const QByteArray &string)
-{
-    QByteArray s = string;
-    s.replace(' ', "");
-    s.replace('(', "");
-    s.replace(')', "");
-    s.replace('<', "");
-    s.replace('>', "");
-    s.replace('[', "");
-    s.replace(']', "");
-    s.replace('{', "");
-    s.replace('}', "");
-    s.replace('/', "");
-    s.replace('%', "");
-    return s;
-}
-
-
 // -------------------------- base engine, shared code between PS and PDF -----------------------
 
 QPdfBaseEngine::QPdfBaseEngine(QPdfBaseEnginePrivate &dd, PaintEngineFeatures f)
diff --git a/src/gui/painting/qpdf_p.h b/src/gui/painting/qpdf_p.h
index 9c4d05d..5c5ceb4 100644
--- a/src/gui/painting/qpdf_p.h
+++ b/src/gui/painting/qpdf_p.h
@@ -156,8 +156,6 @@ namespace QPdf {
     PaperSize paperSize(QPrinter::PaperSize paperSize);
     const char *paperSizeToString(QPrinter::PaperSize paperSize);
 
-
-    QByteArray stripSpecialCharacters(const QByteArray &string);
 }
 
 
diff --git a/src/gui/painting/qprintengine_ps.cpp b/src/gui/painting/qprintengine_ps.cpp
index 28e9a7a..ca694ae 100644
--- a/src/gui/painting/qprintengine_ps.cpp
+++ b/src/gui/painting/qprintengine_ps.cpp
@@ -64,7 +64,6 @@
 #include "qbitmap.h"
 #include "qregion.h"
 #include "qimagewriter.h"
-#include <private/qunicodetables_p.h>
 #include <private/qpainterpath_p.h>
 #include <qdebug.h>
 #include <private/qdrawhelper_p.h>
diff --git a/src/gui/painting/qprintengine_win.cpp b/src/gui/painting/qprintengine_win.cpp
index dd4de99..afae0a5 100644
--- a/src/gui/painting/qprintengine_win.cpp
+++ b/src/gui/painting/qprintengine_win.cpp
@@ -851,7 +851,7 @@ void QWin32PrintEnginePrivate::strokePath_dev(const QPainterPath &path, const QC
 
     HPEN pen = ExtCreatePen(((penWidth == 0) ? PS_COSMETIC : PS_GEOMETRIC)
                             | PS_SOLID | capStyle | joinStyle,
-                            penWidth, &brush, 0, 0);
+                            (penWidth == 0) ? 1 : penWidth, &brush, 0, 0);
 
     HGDIOBJ old_pen = SelectObject(hdc, pen);
     StrokePath(hdc);
diff --git a/src/gui/painting/qrasterdefs_p.h b/src/gui/painting/qrasterdefs_p.h
index 19a0b16..f6339ed 100644
--- a/src/gui/painting/qrasterdefs_p.h
+++ b/src/gui/painting/qrasterdefs_p.h
@@ -100,7 +100,7 @@ QT_FT_BEGIN_HEADER
   /*    distances in integer font units, or 16,16, or 26.6 fixed float     */
   /*    pixel coordinates.                                                 */
   /*                                                                       */
-  typedef signed long  QT_FT_Pos;
+  typedef signed int  QT_FT_Pos;
 
 
   /*************************************************************************/
@@ -1088,6 +1088,7 @@ QT_FT_BEGIN_HEADER
     QT_FT_Raster_BitSet_Func   bit_set;      /* doesn't work! */
     void*                   user;
     QT_FT_BBox                 clip_box;
+    int                     skip_spans;
 
   } QT_FT_Raster_Params;
 
diff --git a/src/gui/painting/qrasterizer.cpp b/src/gui/painting/qrasterizer.cpp
index f8f8afb..4fded1f 100644
--- a/src/gui/painting/qrasterizer.cpp
+++ b/src/gui/painting/qrasterizer.cpp
@@ -65,6 +65,12 @@ typedef int Q16Dot16;
 #define COORD_ROUNDING 1 // 0: round up, 1: round down
 #define COORD_OFFSET 32 // 26.6, 32 is half a pixel
 
+static inline QT_FT_Vector PointToVector(const QPointF &p)
+{
+    QT_FT_Vector result = { QT_FT_Pos(p.x() * 64), QT_FT_Pos(p.y() * 64) };
+    return result;
+}
+
 class QSpanBuffer {
 public:
     QSpanBuffer(ProcessSpans blend, void *data, const QRect &clipRect)
@@ -693,9 +699,9 @@ static Q16Dot16 intersectPixelFP(int x, Q16Dot16 top, Q16Dot16 bottom, Q16Dot16
     }
 }
 
-static inline bool q16Dot16Compare(qreal p1, qreal p2)
+static inline bool q26Dot6Compare(qreal p1, qreal p2)
 {
-    return FloatToQ16Dot16(p2 - p1) == 0;
+    return int((p2  - p1) * 64.) == 0;
 }
 
 static inline qreal qFloorF(qreal v)
@@ -708,6 +714,12 @@ static inline qreal qFloorF(qreal v)
         return floor(v);
 }
 
+static inline QPointF snapTo26Dot6Grid(const QPointF &p)
+{
+    return QPointF(qFloorF(p.x() * 64) * (1 / qreal(64)),
+                   qFloorF(p.y() * 64) * (1 / qreal(64)));
+}
+
 void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width, bool squareCap)
 {
     if (a == b || width == 0 || d->clipRect.isEmpty())
@@ -718,17 +730,21 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
     QPointF pa = a;
     QPointF pb = b;
 
-    QPointF offs = QPointF(qAbs(b.y() - a.y()), qAbs(b.x() - a.x())) * width * 0.5;    
-    if (squareCap)
-        offs += QPointF(offs.y(), offs.x());
+    if (squareCap) {
+        QPointF delta = pb - pa;
+        pa -= (0.5f * width) * delta;
+        pb += (0.5f * width) * delta;
+    }
+
+    QPointF offs = QPointF(qAbs(b.y() - a.y()), qAbs(b.x() - a.x())) * width * 0.5;
     const QRectF clip(d->clipRect.topLeft() - offs, d->clipRect.bottomRight() + QPoint(1, 1) + offs);
 
-    if (!clip.contains(a) || !clip.contains(b)) {
+    if (!clip.contains(pa) || !clip.contains(pb)) {
         qreal t1 = 0;
         qreal t2 = 1;
 
-        const qreal o[2] = { a.x(), a.y() };
-        const qreal d[2] = { b.x() - a.x(), b.y() - a.y() };
+        const qreal o[2] = { pa.x(), pa.y() };
+        const qreal d[2] = { pb.x() - pa.x(), pb.y() - pa.y() };
 
         const qreal low[2] = { clip.left(), clip.top() };
         const qreal high[2] = { clip.right(), clip.bottom() };
@@ -751,8 +767,12 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
             if (t1 >= t2)
                 return;
         }
-        pa = a + (b - a) * t1;
-        pb = a + (b - a) * t2;
+
+        QPointF npa = pa + (pb - pa) * t1;
+        QPointF npb = pa + (pb - pa) * t2;
+
+        pa = npa;
+        pb = npb;
     }
 
     if (!d->antialiased) {
@@ -763,15 +783,6 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
     }
 
     {
-        const qreal gridResolution = 64;
-        const qreal reciprocal = 1 / gridResolution;
-
-        // snap to grid to prevent large slopes
-        pa.rx() = qFloorF(pa.rx() * gridResolution) * reciprocal;
-        pa.ry() = qFloorF(pa.ry() * gridResolution) * reciprocal;
-        pb.rx() = qFloorF(pb.rx() * gridResolution) * reciprocal;
-        pb.ry() = qFloorF(pb.ry() * gridResolution) * reciprocal;
-
         // old delta
         const QPointF d0 = a - b;
         const qreal w0 = d0.x() * d0.x() + d0.y() * d0.y();
@@ -789,7 +800,7 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
 
     QSpanBuffer buffer(d->blend, d->data, d->clipRect);
 
-    if (q16Dot16Compare(pa.y(), pb.y())) {
+    if (q26Dot6Compare(pa.y(), pb.y())) {
         const qreal x = (pa.x() + pb.x()) * 0.5f;
         const qreal dx = qAbs(pb.x() - pa.x()) * 0.5f;
 
@@ -799,26 +810,16 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
         pa = QPointF(x, y - dy);
         pb = QPointF(x, y + dy);
 
-        if (squareCap)
-            width = 1 / width + 1.0f;
-        else
-            width = 1 / width;
-
-        squareCap = false;
+        width = 1 / width;
     }
 
-    if (q16Dot16Compare(pa.x(), pb.x())) {
+    if (q26Dot6Compare(pa.x(), pb.x())) {
         if (pa.y() > pb.y())
             qSwap(pa, pb);
 
         const qreal dy = pb.y() - pa.y();
         const qreal halfWidth = 0.5f * width * dy;
 
-        if (squareCap) {
-            pa.ry() -= halfWidth;
-            pb.ry() += halfWidth;
-        }
-
         qreal left = pa.x() - halfWidth;
         qreal right = pa.x() + halfWidth;
 
@@ -828,7 +829,7 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
         pa.ry() = qBound(qreal(d->clipRect.top()), pa.y(), qreal(d->clipRect.bottom() + 1));
         pb.ry() = qBound(qreal(d->clipRect.top()), pb.y(), qreal(d->clipRect.bottom() + 1));
 
-        if (q16Dot16Compare(left, right) || q16Dot16Compare(pa.y(), pb.y()))
+        if (q26Dot6Compare(left, right) || q26Dot6Compare(pa.y(), pb.y()))
             return;
 
         if (d->antialiased) {
@@ -899,11 +900,6 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
         delta *= 0.5f * width;
         const QPointF perp(delta.y(), -delta.x());
 
-        if (squareCap) {
-            pa -= delta;
-            pb += delta;
-        }
-
         QPointF top;
         QPointF left;
         QPointF right;
@@ -921,14 +917,36 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
             bottom = pb + perp;
         }
 
+        top = snapTo26Dot6Grid(top);
+        bottom = snapTo26Dot6Grid(bottom);
+        left = snapTo26Dot6Grid(left);
+        right = snapTo26Dot6Grid(right);
+
         const qreal topBound = qBound(qreal(d->clipRect.top()), top.y(), qreal(d->clipRect.bottom()));
         const qreal bottomBound = qBound(qreal(d->clipRect.top()), bottom.y(), qreal(d->clipRect.bottom()));
 
-        const qreal leftSlope = (left.x() - top.x()) / (left.y() - top.y());
-        const qreal rightSlope = -1.0f / leftSlope;
+        const QPointF topLeftEdge = left - top;
+        const QPointF topRightEdge = right - top;
+        const QPointF bottomLeftEdge = bottom - left;
+        const QPointF bottomRightEdge = bottom - right;
+
+        const qreal topLeftSlope = topLeftEdge.x() / topLeftEdge.y();
+        const qreal bottomLeftSlope = bottomLeftEdge.x() / bottomLeftEdge.y();
+
+        const qreal topRightSlope = topRightEdge.x() / topRightEdge.y();
+        const qreal bottomRightSlope = bottomRightEdge.x() / bottomRightEdge.y();
+
+        const Q16Dot16 topLeftSlopeFP = FloatToQ16Dot16(topLeftSlope);
+        const Q16Dot16 topRightSlopeFP = FloatToQ16Dot16(topRightSlope);
 
-        const Q16Dot16 leftSlopeFP = FloatToQ16Dot16(leftSlope);
-        const Q16Dot16 rightSlopeFP = FloatToQ16Dot16(rightSlope);
+        const Q16Dot16 bottomLeftSlopeFP = FloatToQ16Dot16(bottomLeftSlope);
+        const Q16Dot16 bottomRightSlopeFP = FloatToQ16Dot16(bottomRightSlope);
+
+        const Q16Dot16 invTopLeftSlopeFP = FloatToQ16Dot16(1 / topLeftSlope);
+        const Q16Dot16 invTopRightSlopeFP = FloatToQ16Dot16(1 / topRightSlope);
+
+        const Q16Dot16 invBottomLeftSlopeFP = FloatToQ16Dot16(1 / bottomLeftSlope);
+        const Q16Dot16 invBottomRightSlopeFP = FloatToQ16Dot16(1 / bottomRightSlope);
 
         if (d->antialiased) {
             const Q16Dot16 iTopFP = IntToQ16Dot16(int(topBound));
@@ -936,16 +954,16 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
             const Q16Dot16 iRightFP = IntToQ16Dot16(int(right.y()));
             const Q16Dot16 iBottomFP = IntToQ16Dot16(int(bottomBound));
 
-            Q16Dot16 leftIntersectAf = FloatToQ16Dot16(top.x() + (int(topBound) - top.y()) * leftSlope);
-            Q16Dot16 rightIntersectAf = FloatToQ16Dot16(top.x() + (int(topBound) - top.y()) * rightSlope);
+            Q16Dot16 leftIntersectAf = FloatToQ16Dot16(top.x() + (int(topBound) - top.y()) * topLeftSlope);
+            Q16Dot16 rightIntersectAf = FloatToQ16Dot16(top.x() + (int(topBound) - top.y()) * topRightSlope);
             Q16Dot16 leftIntersectBf = 0;
             Q16Dot16 rightIntersectBf = 0;
 
             if (iLeftFP < iTopFP)
-                leftIntersectBf = FloatToQ16Dot16(left.x() + (int(topBound) - left.y()) * rightSlope);
+                leftIntersectBf = FloatToQ16Dot16(left.x() + (int(topBound) - left.y()) * bottomLeftSlope);
 
             if (iRightFP < iTopFP)
-                rightIntersectBf = FloatToQ16Dot16(right.x() + (int(topBound) - right.y()) * leftSlope);
+                rightIntersectBf = FloatToQ16Dot16(right.x() + (int(topBound) - right.y()) * bottomRightSlope);
 
             Q16Dot16 rowTop, rowBottomLeft, rowBottomRight, rowTopLeft, rowTopRight, rowBottom;
             Q16Dot16 topLeftIntersectAf, topLeftIntersectBf, topRightIntersectAf, topRightIntersectBf;
@@ -960,9 +978,9 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
 
             rowTop = qMax(iTopFP, yTopFP);
             topLeftIntersectAf = leftIntersectAf +
-                                 Q16Dot16Multiply(leftSlopeFP, rowTop - iTopFP);
+                                 Q16Dot16Multiply(topLeftSlopeFP, rowTop - iTopFP);
             topRightIntersectAf = rightIntersectAf +
-                                  Q16Dot16Multiply(rightSlopeFP, rowTop - iTopFP);
+                                  Q16Dot16Multiply(topRightSlopeFP, rowTop - iTopFP);
 
             Q16Dot16 yFP = iTopFP;
             while (yFP <= iBottomFP) {
@@ -974,30 +992,30 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
 
                 if (yFP == iLeftFP) {
                     const int y = Q16Dot16ToInt(yFP);
-                    leftIntersectBf = FloatToQ16Dot16(left.x() + (y - left.y()) * rightSlope);
-                    topLeftIntersectBf = leftIntersectBf + Q16Dot16Multiply(rightSlopeFP, rowTopLeft - yFP);
-                    bottomLeftIntersectAf = leftIntersectAf + Q16Dot16Multiply(leftSlopeFP, rowBottomLeft - yFP);
+                    leftIntersectBf = FloatToQ16Dot16(left.x() + (y - left.y()) * bottomLeftSlope);
+                    topLeftIntersectBf = leftIntersectBf + Q16Dot16Multiply(bottomLeftSlopeFP, rowTopLeft - yFP);
+                    bottomLeftIntersectAf = leftIntersectAf + Q16Dot16Multiply(topLeftSlopeFP, rowBottomLeft - yFP);
                 } else {
                     topLeftIntersectBf = leftIntersectBf;
-                    bottomLeftIntersectAf = leftIntersectAf + leftSlopeFP;
+                    bottomLeftIntersectAf = leftIntersectAf + topLeftSlopeFP;
                 }
 
                 if (yFP == iRightFP) {
                     const int y = Q16Dot16ToInt(yFP);
-                    rightIntersectBf = FloatToQ16Dot16(right.x() + (y - right.y()) * leftSlope);
-                    topRightIntersectBf = rightIntersectBf + Q16Dot16Multiply(leftSlopeFP, rowTopRight - yFP);
-                    bottomRightIntersectAf = rightIntersectAf + Q16Dot16Multiply(rightSlopeFP, rowBottomRight - yFP);
+                    rightIntersectBf = FloatToQ16Dot16(right.x() + (y - right.y()) * bottomRightSlope);
+                    topRightIntersectBf = rightIntersectBf + Q16Dot16Multiply(bottomRightSlopeFP, rowTopRight - yFP);
+                    bottomRightIntersectAf = rightIntersectAf + Q16Dot16Multiply(topRightSlopeFP, rowBottomRight - yFP);
                 } else {
                     topRightIntersectBf = rightIntersectBf;
-                    bottomRightIntersectAf = rightIntersectAf + rightSlopeFP;
+                    bottomRightIntersectAf = rightIntersectAf + topRightSlopeFP;
                 }
 
                 if (yFP == iBottomFP) {
-                    bottomLeftIntersectBf = leftIntersectBf + Q16Dot16Multiply(rightSlopeFP, rowBottom - yFP);
-                    bottomRightIntersectBf = rightIntersectBf + Q16Dot16Multiply(leftSlopeFP, rowBottom - yFP);
+                    bottomLeftIntersectBf = leftIntersectBf + Q16Dot16Multiply(bottomLeftSlopeFP, rowBottom - yFP);
+                    bottomRightIntersectBf = rightIntersectBf + Q16Dot16Multiply(bottomRightSlopeFP, rowBottom - yFP);
                 } else {
-                    bottomLeftIntersectBf = leftIntersectBf + rightSlopeFP;
-                    bottomRightIntersectBf = rightIntersectBf + leftSlopeFP;
+                    bottomLeftIntersectBf = leftIntersectBf + bottomLeftSlopeFP;
+                    bottomRightIntersectBf = rightIntersectBf + bottomRightSlopeFP;
                 }
 
                 if (yFP < iLeftFP) {
@@ -1042,21 +1060,21 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
                     if (yFP <= iLeftFP)
                         excluded += intersectPixelFP(x, rowTop, rowBottomLeft,
                                                      bottomLeftIntersectAf, topLeftIntersectAf,
-                                                     leftSlopeFP, -rightSlopeFP);
+                                                     topLeftSlopeFP, invTopLeftSlopeFP);
                     if (yFP >= iLeftFP)
                         excluded += intersectPixelFP(x, rowTopLeft, rowBottom,
                                                      topLeftIntersectBf, bottomLeftIntersectBf,
-                                                     rightSlopeFP, -leftSlopeFP);
+                                                     bottomLeftSlopeFP, invBottomLeftSlopeFP);
 
                     if (x >= rightMin) {
                         if (yFP <= iRightFP)
                             excluded += (rowBottomRight - rowTop) - intersectPixelFP(x, rowTop, rowBottomRight,
                                                                                      topRightIntersectAf, bottomRightIntersectAf,
-                                                                                     rightSlopeFP, -leftSlopeFP);
+                                                                                     topRightSlopeFP, invTopRightSlopeFP);
                         if (yFP >= iRightFP)
                             excluded += (rowBottom - rowTopRight) - intersectPixelFP(x, rowTopRight, rowBottom,
                                                                                      bottomRightIntersectBf, topRightIntersectBf,
-                                                                                     leftSlopeFP, -rightSlopeFP);
+                                                                                     bottomRightSlopeFP, invBottomRightSlopeFP);
                     }
 
                     Q16Dot16 coverage = rowHeight - excluded;
@@ -1074,11 +1092,11 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
                     if (yFP <= iRightFP)
                         excluded += (rowBottomRight - rowTop) - intersectPixelFP(x, rowTop, rowBottomRight,
                                                                                  topRightIntersectAf, bottomRightIntersectAf,
-                                                                                 rightSlopeFP, -leftSlopeFP);
+                                                                                 topRightSlopeFP, invTopRightSlopeFP);
                     if (yFP >= iRightFP)
                         excluded += (rowBottom - rowTopRight) - intersectPixelFP(x, rowTopRight, rowBottom,
                                                                                  bottomRightIntersectBf, topRightIntersectBf,
-                                                                                 leftSlopeFP, -rightSlopeFP);
+                                                                                 bottomRightSlopeFP, invBottomRightSlopeFP);
 
                     Q16Dot16 coverage = rowHeight - excluded;
                     buffer.addSpan(x, 1, Q16Dot16ToInt(yFP),
@@ -1086,10 +1104,10 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
                     ++x;
                 }
 
-                leftIntersectAf += leftSlopeFP;
-                leftIntersectBf += rightSlopeFP;
-                rightIntersectAf += rightSlopeFP;
-                rightIntersectBf += leftSlopeFP;
+                leftIntersectAf += topLeftSlopeFP;
+                leftIntersectBf += bottomLeftSlopeFP;
+                rightIntersectAf += topRightSlopeFP;
+                rightIntersectBf += bottomRightSlopeFP;
                 topLeftIntersectAf = leftIntersectAf;
                 topRightIntersectAf = rightIntersectAf;
 
@@ -1103,10 +1121,10 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
             int iBottom = bottom.y() < 0.5f? -1 : int(bottom.y() - 0.5f);
             int iMiddle = qMin(iLeft, iRight);
 
-            Q16Dot16 leftIntersectAf = FloatToQ16Dot16(top.x() + 0.5f + (iTop + 0.5f - top.y()) * leftSlope);
-            Q16Dot16 leftIntersectBf = FloatToQ16Dot16(left.x() + 0.5f + (iLeft + 1.5f - left.y()) * rightSlope);
-            Q16Dot16 rightIntersectAf = FloatToQ16Dot16(top.x() - 0.5f + (iTop + 0.5f - top.y()) * rightSlope);
-            Q16Dot16 rightIntersectBf = FloatToQ16Dot16(right.x() - 0.5f + (iRight + 1.5f - right.y()) * leftSlope);
+            Q16Dot16 leftIntersectAf = FloatToQ16Dot16(top.x() + 0.5f + (iTop + 0.5f - top.y()) * topLeftSlope);
+            Q16Dot16 leftIntersectBf = FloatToQ16Dot16(left.x() + 0.5f + (iLeft + 1.5f - left.y()) * bottomLeftSlope);
+            Q16Dot16 rightIntersectAf = FloatToQ16Dot16(top.x() - 0.5f + (iTop + 0.5f - top.y()) * topRightSlope);
+            Q16Dot16 rightIntersectBf = FloatToQ16Dot16(right.x() - 0.5f + (iRight + 1.5f - right.y()) * bottomRightSlope);
 
             int ny;
             int y = iTop;
@@ -1128,10 +1146,10 @@ void QRasterizer::rasterizeLine(const QPointF &a, const QPointF &b, qreal width,
                 ri += rs; \
              }
 
-            DO_SEGMENT(iMiddle, leftIntersectAf, rightIntersectAf, leftSlopeFP, rightSlopeFP)
-            DO_SEGMENT(iRight, leftIntersectBf, rightIntersectAf, rightSlopeFP, rightSlopeFP)
-            DO_SEGMENT(iLeft, leftIntersectAf, rightIntersectBf, leftSlopeFP, leftSlopeFP)
-            DO_SEGMENT(iBottom, leftIntersectBf, rightIntersectBf, rightSlopeFP, leftSlopeFP)
+            DO_SEGMENT(iMiddle, leftIntersectAf, rightIntersectAf, topLeftSlopeFP, topRightSlopeFP)
+            DO_SEGMENT(iRight, leftIntersectBf, rightIntersectAf, bottomLeftSlopeFP, topRightSlopeFP)
+            DO_SEGMENT(iLeft, leftIntersectAf, rightIntersectBf, topLeftSlopeFP, bottomRightSlopeFP);
+            DO_SEGMENT(iBottom, leftIntersectBf, rightIntersectBf, bottomLeftSlopeFP, bottomRightSlopeFP);
 #undef DO_SEGMENT
         }
     }
@@ -1183,12 +1201,6 @@ void QRasterizer::rasterize(const QT_FT_Outline *outline, Qt::FillRule fillRule)
     d->scanConverter.end();
 }
 
-static inline QT_FT_Vector PointToVector(const QPointF &p)
-{
-    QT_FT_Vector result = { QT_FT_Pos(p.x() * 64), QT_FT_Pos(p.y() * 64) };
-    return result;
-}
-
 void QRasterizer::rasterize(const QPainterPath &path, Qt::FillRule fillRule)
 {
     if (path.isEmpty())
diff --git a/src/gui/painting/qregion.cpp b/src/gui/painting/qregion.cpp
index c57db82..c5d5dc9 100644
--- a/src/gui/painting/qregion.cpp
+++ b/src/gui/painting/qregion.cpp
@@ -1699,8 +1699,8 @@ QT_BEGIN_INCLUDE_NAMESPACE
 #include <limits.h>
 QT_END_INCLUDE_NAMESPACE
 
-/*  1 if two BOXs overlap.
- *  0 if two BOXs do not overlap.
+/*  1 if two BOXes overlap.
+ *  0 if two BOXes do not overlap.
  *  Remember, x2 and y2 are not in the region
  */
 #define EXTENTCHECK(r1, r2) \
diff --git a/src/gui/painting/qstroker.cpp b/src/gui/painting/qstroker.cpp
index eabbd8a..9decf41 100644
--- a/src/gui/painting/qstroker.cpp
+++ b/src/gui/painting/qstroker.cpp
@@ -190,6 +190,7 @@ static inline qreal adapted_angle_on_x(const QLineF &line)
 QStrokerOps::QStrokerOps()
     : m_elements(0)
     , m_curveThreshold(qt_real_to_fixed(0.25))
+    , m_dashThreshold(qt_real_to_fixed(0.25))
     , m_customData(0)
     , m_moveTo(0)
     , m_lineTo(0)
@@ -243,7 +244,7 @@ void QStrokerOps::strokePath(const QPainterPath &path, void *customData, const Q
     if (path.isEmpty())
         return;
 
-    setCurveThresholdFromTransform(matrix);
+    setCurveThresholdFromTransform(QTransform());
     begin(customData);
     int count = path.elementCount();
     if (matrix.isIdentity()) {
@@ -315,7 +316,7 @@ void QStrokerOps::strokePolygon(const QPointF *points, int pointCount, bool impl
     if (!pointCount)
         return;
 
-    setCurveThresholdFromTransform(matrix);
+    setCurveThresholdFromTransform(QTransform());
     begin(data);
     if (matrix.isIdentity()) {
         moveTo(qt_real_to_fixed(points[0].x()), qt_real_to_fixed(points[0].y()));
@@ -356,7 +357,7 @@ void QStrokerOps::strokeEllipse(const QRectF &rect, void *data, const QTransform
         }
     }
 
-    setCurveThresholdFromTransform(matrix);
+    setCurveThresholdFromTransform(QTransform());
     begin(data);
     moveTo(qt_real_to_fixed(start.x()), qt_real_to_fixed(start.y()));
     for (int i=0; i<12; i+=3) {
@@ -609,7 +610,7 @@ void QStroker::joinPoints(qfixed focal_x, qfixed focal_y, const QLineF &nextLine
             }
             QLineF miterLine(QPointF(qt_fixed_to_real(focal_x),
                                      qt_fixed_to_real(focal_y)), isect);
-            if (miterLine.length() > qt_fixed_to_real(m_strokeWidth * m_miterLimit) / 2) {
+            if (type == QLineF::NoIntersection || miterLine.length() > qt_fixed_to_real(m_strokeWidth * m_miterLimit) / 2) {
                 emitLineTo(qt_real_to_fixed(nextLine.x1()),
                            qt_real_to_fixed(nextLine.y1()));
             } else {
@@ -1142,7 +1143,7 @@ void QDashStroker::processCurrentSubpath()
 
     QPainterPath dashPath;
 
-    QSubpathFlatIterator it(&m_elements, m_curveThreshold);
+    QSubpathFlatIterator it(&m_elements, m_dashThreshold);
     qfixed2d prev = it.next();
 
     bool clipping = !m_clip_rect.isEmpty();
diff --git a/src/gui/painting/qstroker_p.h b/src/gui/painting/qstroker_p.h
index d646135..5607a8e 100644
--- a/src/gui/painting/qstroker_p.h
+++ b/src/gui/painting/qstroker_p.h
@@ -168,7 +168,7 @@ public:
     {
         qreal scale;
         qt_scaleForTransform(transform, &scale);
-        setCurveThreshold(scale == 0 ? qreal(0.5) : (qreal(0.5) / scale));
+        m_dashThreshold = scale == 0 ? qreal(0.5) : (qreal(0.5) / scale);
     }
 
     void setCurveThreshold(qfixed threshold) { m_curveThreshold = threshold; }
@@ -184,6 +184,7 @@ protected:
 
     QRectF m_clip_rect;
     qfixed m_curveThreshold;
+    qfixed m_dashThreshold;
 
     void *m_customData;
     qStrokerMoveToHook m_moveTo;
diff --git a/src/gui/painting/qtextureglyphcache.cpp b/src/gui/painting/qtextureglyphcache.cpp
index 631a9cf..b609f7b 100644
--- a/src/gui/painting/qtextureglyphcache.cpp
+++ b/src/gui/painting/qtextureglyphcache.cpp
@@ -47,10 +47,6 @@
 #include "private/qnativeimage_p.h"
 #include "private/qfontengine_ft_p.h"
 
-#ifndef QT_DEFAULT_TEXTURE_GLYPH_CACHE_WIDTH
-#define QT_DEFAULT_TEXTURE_GLYPH_CACHE_WIDTH 256
-#endif
-
 QT_BEGIN_NAMESPACE
 
 // #define CACHE_DEBUG
@@ -137,10 +133,18 @@ void QTextureGlyphCache::populate(QFontEngine *fontEngine, int numGlyphs, const
         m_currentRowHeight = qMax(m_currentRowHeight, c.h + margin * 2);
 
         if (m_cx + c.w > m_w) {
-            // no room on the current line, start new glyph strip
-            m_cx = 0;
-            m_cy += m_currentRowHeight + paddingDoubled;
-            m_currentRowHeight = 0; // New row
+            int new_width = m_w*2;
+            while (new_width < m_cx + c.w)
+                new_width *= 2;
+            if (new_width <= maxTextureWidth()) {
+                resizeTextureData(new_width, m_h);
+                m_w = new_width;
+            } else {
+                // no room on the current line, start new glyph strip
+                m_cx = 0;
+                m_cy += m_currentRowHeight + paddingDoubled;
+                m_currentRowHeight = 0; // New row
+            }
         }
         if (m_cy + c.h > m_h) {
             int new_height = m_h*2;
diff --git a/src/gui/painting/qtextureglyphcache_p.h b/src/gui/painting/qtextureglyphcache_p.h
index a818978..e6d2b22 100644
--- a/src/gui/painting/qtextureglyphcache_p.h
+++ b/src/gui/painting/qtextureglyphcache_p.h
@@ -64,6 +64,10 @@
 #  undef m_type
 #endif
 
+#ifndef QT_DEFAULT_TEXTURE_GLYPH_CACHE_WIDTH
+#define QT_DEFAULT_TEXTURE_GLYPH_CACHE_WIDTH 256
+#endif
+
 struct glyph_metrics_t;
 typedef unsigned int glyph_t;
 
@@ -113,6 +117,8 @@ public:
     QHash<glyph_t, Coord> coords;
 
     QImage textureMapForGlyph(glyph_t g) const;
+    virtual int maxTextureWidth() const { return QT_DEFAULT_TEXTURE_GLYPH_CACHE_WIDTH; }
+    virtual int maxTextureHeight() const { return 32768; }
 
 protected:
     QFontEngine *m_current_fontengine;