Changeset 846 for trunk/src/gui/painting/qpaintengine_raster.cpp

Timestamp:

May 5, 2011, 5:36:53 AM (14 years ago)

Author:

Dmitry A. Kuminov

Message:

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

Location:

trunk

Files:

• . (modified) (1 prop)
• src/gui/painting/qpaintengine_raster.cpp (modified) (45 diffs)

trunk/src/gui/painting/qpaintengine_raster.cpp

@@ -1 +1 @@
 /****************************************************************************
 **
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
@@ -41 +41 @@
 
 #include <QtCore/qglobal.h>
+#include <QtCore/qmutex.h>
 
 #define QT_FT_BEGIN_HEADER
@@ -68 +69 @@
 //   #include <private/qrasterizer_p.h>
 #include <private/qimage_p.h>
+#include <private/qstatictext_p.h>
+#include "qmemrotate_p.h"
 
 #include "qpaintengine_raster_p.h"
@@ -251 +254 @@
 #endif
 
+QRasterPaintEnginePrivate::QRasterPaintEnginePrivate() :
+    QPaintEngineExPrivate(),
+    cachedLines(0)
+{
+}
 
 
@@ -336 +344 @@
 #endif
 
-    d->rasterPoolSize = 8192;
-    d->rasterPoolBase =
-#if defined(Q_WS_WIN64)
-        // We make use of setjmp and longjmp in qgrayraster.c which requires
-        // 16-byte alignment, hence we hardcode this requirement here..
-        (unsigned char *) _aligned_malloc(d->rasterPoolSize, sizeof(void*) * 2);
-#else
-        (unsigned char *) malloc(d->rasterPoolSize);
-#endif
-    Q_CHECK_PTR(d->rasterPoolBase);
-
     // The antialiasing raster.
     d->grayRaster.reset(new QT_FT_Raster);
     Q_CHECK_PTR(d->grayRaster.data());
-    if (qt_ft_grays_raster.raster_new(0, d->grayRaster.data()))
+    if (qt_ft_grays_raster.raster_new(d->grayRaster.data()))
         QT_THROW(std::bad_alloc()); // an error creating the raster is caused by a bad malloc
 
-
-    qt_ft_grays_raster.raster_reset(*d->grayRaster.data(), d->rasterPoolBase, d->rasterPoolSize);
 
     d->rasterizer.reset(new QRasterizer);
@@ -437 +432 @@
     Q_D(QRasterPaintEngine);
 
-#if defined(Q_WS_WIN64)
-    _aligned_free(d->rasterPoolBase);
-#else
-    free(d->rasterPoolBase);
-#endif
-
     qt_ft_grays_raster.raster_done(*d->grayRaster.data());
 }
@@ -455 +444 @@
     if (device->devType() == QInternal::Pixmap) {
         QPixmap *pixmap = static_cast<QPixmap *>(device);
-        if (pixmap->data->classId() == QPixmapData::RasterClass)
-            d->device = pixmap->data->buffer();
+        QPixmapData *pd = pixmap->pixmapData();
+        if (pd->classId() == QPixmapData::RasterClass)
+            d->device = pd->buffer();
     } else {
         d->device = device;
@@ -471 +461 @@
     QRasterPaintEngineState *s = state();
     ensureOutlineMapper();
-    d->outlineMapper->m_clip_rect = d->deviceRect.adjusted(-10, -10, 10, 10);
-
-    // This is the upp
-    QRect bounds(-QT_RASTER_COORD_LIMIT, -QT_RASTER_COORD_LIMIT,
-                 QT_RASTER_COORD_LIMIT*2 - 1, QT_RASTER_COORD_LIMIT * 2 - 1);
-    d->outlineMapper->m_clip_rect = bounds.intersected(d->outlineMapper->m_clip_rect);
-
+    d->outlineMapper->m_clip_rect = d->deviceRect;
+
+    if (d->outlineMapper->m_clip_rect.width() > QT_RASTER_COORD_LIMIT)
+        d->outlineMapper->m_clip_rect.setWidth(QT_RASTER_COORD_LIMIT);
+    if (d->outlineMapper->m_clip_rect.height() > QT_RASTER_COORD_LIMIT)
+        d->outlineMapper->m_clip_rect.setHeight(QT_RASTER_COORD_LIMIT);
 
     d->rasterizer->setClipRect(d->deviceRect);
@@ -887 +876 @@
         updateMatrix(s->matrix);
 
-    if (s->dirty & (DirtyPen|DirtyCompositionMode)) {
+    if (s->dirty & (DirtyPen|DirtyCompositionMode|DirtyOpacity)) {
         const QPainter::CompositionMode mode = s->composition_mode;
         s->flags.fast_text = (s->penData.type == QSpanData::Solid)
+                       && s->intOpacity == 256
                        && (mode == QPainter::CompositionMode_Source
                            || (mode == QPainter::CompositionMode_SourceOver
@@ -913 +903 @@
     s->strokeFlags |= DirtyOpacity;
     s->pixmapFlags |= DirtyOpacity;
+    s->dirty |= DirtyOpacity;
     s->intOpacity = (int) (s->opacity * 256);
 }
@@ -1115 +1106 @@
     bool bilinear = q->state()->flags.bilinear;
 
-    if (b.d->transform.type() > QTransform::TxNone) { // FALCON: optimise
+    if (b.d->transform.type() > QTransform::TxNone) { // FALCON: optimize
         spanData->setupMatrix(b.transform() * m, bilinear);
     } else {
@@ -1222 +1213 @@
     if (op != Qt::UniteClip && (op != Qt::IntersectClip || !s->clip
                                 || s->clip->hasRectClip || s->clip->hasRegionClip)) {
-        if (s->matrix.type() <= QTransform::TxTranslate
+        if (s->matrix.type() <= QTransform::TxScale
             && ((path.shape() == QVectorPath::RectangleHint)
                 || (isRect(points, path.elementCount())
@@ -1234 +1225 @@
 
             QRectF r(points[0], points[1], points[4]-points[0], points[5]-points[1]);
-            clip(r.toRect(), op);
-            return;
+            if (setClipRectInDeviceCoords(s->matrix.mapRect(r).toRect(), op))
+                return;
         }
     }
@@ -1296 +1287 @@
 #endif
 
-    Q_D(QRasterPaintEngine);
     QRasterPaintEngineState *s = state();
 
@@ -1306 +1296 @@
         return;
 
-    } else if (op == Qt::ReplaceClip || s->clip == 0) {
+    } else if (!setClipRectInDeviceCoords(s->matrix.mapRect(rect), op)) {
+        QPaintEngineEx::clip(rect, op);
+        return;
+    }
+}
+
+
+bool QRasterPaintEngine::setClipRectInDeviceCoords(const QRect &r, Qt::ClipOperation op)
+{
+    Q_D(QRasterPaintEngine);
+    QRect clipRect = r & d->deviceRect;
+    QRasterPaintEngineState *s = state();
+
+    if (op == Qt::ReplaceClip || s->clip == 0) {
 
         // No current clip, hence we intersect with sysclip and be
         // done with it...
-        QRect clipRect = s->matrix.mapRect(rect) & d->deviceRect;
         QRegion clipRegion = systemClip();
         QClipData *clip = new QClipData(d->rasterBuffer->height());
@@ -1326 +1328 @@
         s->flags.has_clip_ownership = true;
 
-    } else { // intersect clip with current clip
+    } else if (op == Qt::IntersectClip){ // intersect clip with current clip
         QClipData *base = s->clip;
 
         Q_ASSERT(base);
         if (base->hasRectClip || base->hasRegionClip) {
-            QRect clipRect = s->matrix.mapRect(rect) & d->deviceRect;
             if (!s->flags.has_clip_ownership) {
                 s->clip = new QClipData(d->rasterBuffer->height());
@@ -1342 +1343 @@
             s->clip->enabled = true;
         } else {
-            QPaintEngineEx::clip(rect, op);
-            return;
-        }
-    }
+            return false;
+        }
+    } else {
+        return false;
+    }
+
     qrasterpaintengine_dirty_clip(d, s);
+    return true;
 }
 
@@ -1725 +1729 @@
             int n = qFloor(dashOffset / patternLength);
             dashOffset -= n * patternLength;
-            while (dashOffset > pattern.at(dashIndex)) {
+            while (dashOffset >= pattern.at(dashIndex)) {
                 dashOffset -= pattern.at(dashIndex);
-                dashIndex = (dashIndex + 1) % pattern.size();
+                if (++dashIndex >= pattern.size())
+                    dashIndex = 0;
                 inDash = !inDash;
             }
@@ -1738 +1743 @@
 
         for (int i = 0; i < lineCount; ++i) {
-            dashOffset = s->lastPen.dashOffset();
             if (lines[i].p1() == lines[i].p2()) {
                 if (s->lastPen.capStyle() != Qt::FlatCap) {
@@ -1812 +1816 @@
         if (s->flags.tx_noshear) {
             d->initializeRasterizer(&s->brushData);
-            // ### Is normalizing really nessesary here?
+            // ### Is normalizing really necessary here?
             const qreal *p = path.points();
             QRectF r = QRectF(p[0], p[1], p[2] - p[0], p[7] - p[1]).normalized();
@@ -2372 +2376 @@
 #endif
 
-    if (pixmap.data->classId() == QPixmapData::RasterClass) {
-        const QImage &image = static_cast<QRasterPixmapData *>(pixmap.data.data())->image;
+    QPixmapData *pd = pixmap.pixmapData();
+    if (pd->classId() == QPixmapData::RasterClass) {
+        const QImage &image = static_cast<QRasterPixmapData *>(pd)->image;
         if (image.depth() == 1) {
             Q_D(QRasterPaintEngine);
@@ -2412 +2417 @@
 #endif
 
-    if (pixmap.data->classId() == QPixmapData::RasterClass) {
-        const QImage &image = static_cast<QRasterPixmapData *>(pixmap.data.data())->image;
+    QPixmapData* pd = pixmap.pixmapData();
+    if (pd->classId() == QPixmapData::RasterClass) {
+        const QImage &image = static_cast<QRasterPixmapData *>(pd)->image;
         if (image.depth() == 1) {
             Q_D(QRasterPaintEngine);
@@ -2430 +2436 @@
         }
     } else {
-        const QImage image = pixmap.toImage();
+        QRect clippedSource = sr.toAlignedRect().intersected(pixmap.rect());
+        const QImage image = pd->toImage(clippedSource);
+        QRectF translatedSource = sr.translated(-clippedSource.topLeft());
         if (image.depth() == 1) {
             Q_D(QRasterPaintEngine);
@@ -2441 +2449 @@
                 return;
             } else {
-                drawImage(r, d->rasterBuffer->colorizeBitmap(image, s->pen.color()), sr);
+                drawImage(r, d->rasterBuffer->colorizeBitmap(image, s->pen.color()), translatedSource);
             }
         } else {
-            drawImage(r, image, sr);
+            drawImage(r, image, translatedSource);
         }
     }
@@ -2532 +2540 @@
 }
 
+namespace {
+    enum RotationType {
+        Rotation90,
+        Rotation180,
+        Rotation270,
+        NoRotation
+    };
+
+    inline RotationType qRotationType(const QTransform &transform)
+    {
+        QTransform::TransformationType type = transform.type();
+
+        if (type > QTransform::TxRotate)
+            return NoRotation;
+
+        if (type == QTransform::TxRotate && qFuzzyIsNull(transform.m11()) && qFuzzyCompare(transform.m12(), qreal(-1))
+            && qFuzzyCompare(transform.m21(), qreal(1)) && qFuzzyIsNull(transform.m22()))
+            return Rotation90;
+
+        if (type == QTransform::TxScale && qFuzzyCompare(transform.m11(), qreal(-1)) && qFuzzyIsNull(transform.m12())
+            && qFuzzyIsNull(transform.m21()) && qFuzzyCompare(transform.m22(), qreal(-1)))
+            return Rotation180;
+
+        if (type == QTransform::TxRotate && qFuzzyIsNull(transform.m11()) && qFuzzyCompare(transform.m12(), qreal(1))
+            && qFuzzyCompare(transform.m21(), qreal(-1)) && qFuzzyIsNull(transform.m22()))
+            return Rotation270;
+
+        return NoRotation;
+    }
+
+    inline bool isPixelAligned(const QRectF &rect) {
+        return QRectF(rect.toRect()) == rect;
+    }
+}
+
 /*!
     \reimp
@@ -2552 +2595 @@
     int sr_b = qCeil(sr.bottom()) - 1;
 
-    if (!s->flags.antialiased && sr_l == sr_r && sr_t == sr_b) {
+    if (s->matrix.type() <= QTransform::TxScale && !s->flags.antialiased && sr_l == sr_r && sr_t == sr_b) {
         // as fillRect will apply the aliased coordinate delta we need to
         // subtract it here as we don't use it for image drawing
@@ -2593 +2636 @@
     const QClipData *clip = d->clip();
 
+    if (s->matrix.type() > QTransform::TxTranslate
+        && !stretch_sr
+        && (!clip || clip->hasRectClip)
+        && s->intOpacity == 256
+        && (d->rasterBuffer->compositionMode == QPainter::CompositionMode_SourceOver
+            || d->rasterBuffer->compositionMode == QPainter::CompositionMode_Source)
+        && d->rasterBuffer->format == img.format()
+        && (d->rasterBuffer->format == QImage::Format_RGB16
+            || d->rasterBuffer->format == QImage::Format_RGB32
+            || (d->rasterBuffer->format == QImage::Format_ARGB32_Premultiplied
+                && d->rasterBuffer->compositionMode == QPainter::CompositionMode_Source)))
+    {
+        RotationType rotationType = qRotationType(s->matrix);
+
+        if (rotationType != NoRotation && qMemRotateFunctions[d->rasterBuffer->format][rotationType] && img.rect().contains(sr.toAlignedRect())) {
+            QRectF transformedTargetRect = s->matrix.mapRect(r);
+
+            if ((!(s->renderHints & QPainter::SmoothPixmapTransform) && !(s->renderHints & QPainter::Antialiasing))
+                || (isPixelAligned(transformedTargetRect) && isPixelAligned(sr)))
+            {
+                QRect clippedTransformedTargetRect = transformedTargetRect.toRect().intersected(clip ? clip->clipRect : d->deviceRect);
+                if (clippedTransformedTargetRect.isNull())
+                    return;
+
+                QRectF clippedTargetRect = s->matrix.inverted().mapRect(QRectF(clippedTransformedTargetRect));
+
+                QRect clippedSourceRect
+                    = QRectF(sr.x() + clippedTargetRect.x() - r.x(), sr.y() + clippedTargetRect.y() - r.y(),
+                            clippedTargetRect.width(), clippedTargetRect.height()).toRect();
+
+                uint dbpl = d->rasterBuffer->bytesPerLine();
+                uint sbpl = img.bytesPerLine();
+
+                uchar *dst = d->rasterBuffer->buffer();
+                uint bpp = img.depth() >> 3;
+
+                const uchar *srcBase = img.bits() + clippedSourceRect.y() * sbpl + clippedSourceRect.x() * bpp;
+                uchar *dstBase = dst + clippedTransformedTargetRect.y() * dbpl + clippedTransformedTargetRect.x() * bpp;
+
+                uint cw = clippedSourceRect.width();
+                uint ch = clippedSourceRect.height();
+
+                qMemRotateFunctions[d->rasterBuffer->format][rotationType](srcBase, cw, ch, sbpl, dstBase, dbpl);
+
+                return;
+            }
+        }
+    }
+
     if (s->matrix.type() > QTransform::TxTranslate || stretch_sr) {
 
-        if (s->flags.fast_images) {
+        QRectF targetBounds = s->matrix.mapRect(r);
+        bool exceedsPrecision = targetBounds.width() > 0xffff
+                                || targetBounds.height() > 0xffff;
+
+        if (s->flags.fast_images && !exceedsPrecision) {
             if (s->matrix.type() > QTransform::TxScale) {
                 SrcOverTransformFunc func = qTransformFunctions[d->rasterBuffer->format][img.format()];
@@ -2717 +2813 @@
     QImage image;
 
-    if (pixmap.data->classId() == QPixmapData::RasterClass) {
-        image = static_cast<QRasterPixmapData *>(pixmap.data.data())->image;
+    QPixmapData *pd = pixmap.pixmapData();
+    if (pd->classId() == QPixmapData::RasterClass) {
+        image = static_cast<QRasterPixmapData *>(pd)->image;
     } else {
         image = pixmap.toImage();
@@ -3003 +3100 @@
 }
 
-void QRasterPaintEngine::drawCachedGlyphs(const QPointF &p, const QTextItemInt &ti)
+void QRasterPaintEngine::drawCachedGlyphs(int numGlyphs, const glyph_t *glyphs,
+                                          const QFixedPoint *positions, QFontEngine *fontEngine)
 {
     Q_D(QRasterPaintEngine);
     QRasterPaintEngineState *s = state();
 
-    QVarLengthArray<QFixedPoint> positions;
-    QVarLengthArray<glyph_t> glyphs;
-    QTransform matrix = s->matrix;
-    matrix.translate(p.x(), p.y());
-    ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
-
-    QFontEngineGlyphCache::Type glyphType = ti.fontEngine->glyphFormat >= 0 ? QFontEngineGlyphCache::Type(ti.fontEngine->glyphFormat) : d->glyphCacheType;
+    QFontEngineGlyphCache::Type glyphType = fontEngine->glyphFormat >= 0 ? QFontEngineGlyphCache::Type(fontEngine->glyphFormat) : d->glyphCacheType;
 
     QImageTextureGlyphCache *cache =
-        (QImageTextureGlyphCache *) ti.fontEngine->glyphCache(0, glyphType, s->matrix);
+        static_cast<QImageTextureGlyphCache *>(fontEngine->glyphCache(0, glyphType, s->matrix));
     if (!cache) {
         cache = new QImageTextureGlyphCache(glyphType, s->matrix);
-        ti.fontEngine->setGlyphCache(0, cache);
-    }
-
-    cache->populate(ti, glyphs, positions);
+        fontEngine->setGlyphCache(0, cache);
+    }
+
+    cache->populate(fontEngine, numGlyphs, glyphs, positions);
 
     const QImage &image = cache->image();
@@ -3041 +3133 @@
 
     const uchar *bits = image.bits();
-    for (int i=0; i<glyphs.size(); ++i) {
+    for (int i=0; i<numGlyphs; ++i) {
         const QTextureGlyphCache::Coord &c = cache->coords.value(glyphs[i]);
         int x = qFloor(positions[i].x + offs) + c.baseLineX - margin;
@@ -3089 +3181 @@
         TSize glyphBitmapSize;
         fe->getCharacterData(glyphs[i], tmetrics, glyphBitmapBytes, glyphBitmapSize);
-        const glyph_metrics_t metrics = ti.fontEngine->boundingBox(glyphs[i]);
-        const int x = qFloor(positions[i].x + metrics.x + aliasDelta);
-        const int y = qFloor(positions[i].y + metrics.y + aliasDelta);
-
+        const int x = qFloor(positions[i].x + tmetrics.HorizBearingX() + aliasDelta);
+        const int y = qFloor(positions[i].y - tmetrics.HorizBearingY() + aliasDelta);
         alphaPenBlt(glyphBitmapBytes, glyphBitmapSize.iWidth, 8, x, y, glyphBitmapSize.iWidth, glyphBitmapSize.iHeight);
     }
@@ -3104 +3194 @@
 
 /*!
- * Returns true if the rectangle is completly within the current clip
+ * Returns true if the rectangle is completely within the current clip
  * state of the paint engine.
  */
@@ -3219 +3309 @@
 
 /*!
+   \reimp
+*/
+void QRasterPaintEngine::drawStaticTextItem(QStaticTextItem *textItem)
+{
+    ensurePen();
+    ensureState();
+
+    drawCachedGlyphs(textItem->numGlyphs, textItem->glyphs, textItem->glyphPositions,
+                     textItem->fontEngine());
+}
+
+/*!
     \reimp
 */
@@ -3266 +3368 @@
 #endif
     if (drawCached) {
-        drawCachedGlyphs(p, ti);
+        QRasterPaintEngineState *s = state();
+
+        QVarLengthArray<QFixedPoint> positions;
+        QVarLengthArray<glyph_t> glyphs;
+
+        QTransform matrix = s->matrix;
+        matrix.translate(p.x(), p.y());
+
+        ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
+
+        drawCachedGlyphs(glyphs.size(), glyphs.constData(), positions.constData(), ti.fontEngine);
         return;
     }
@@ -3373 +3485 @@
 
     for(int i = 0; i < glyphs.size(); i++) {
-        QFontEngineFT::Glyph *glyph = gset->glyph_data.value(glyphs[i]);
+        QFontEngineFT::Glyph *glyph = gset->getGlyph(glyphs[i]);
 
         if (!glyph || glyph->format != neededFormat) {
@@ -3609 +3721 @@
             *dashOffset = 0;
             *inDash = !(*inDash);
-            *dashIndex = (*dashIndex + 1) % pattern.size();
+            if (++*dashIndex >= pattern.size())
+                *dashIndex = 0;
             length -= dash;
             l.setLength(dash);
@@ -3615 +3728 @@
         }
 
-        if (rasterize && dash != 0)
+        if (rasterize && dash > 0)
             rasterizer->rasterizeLine(l.p1(), l.p2(), width / dash, squareCap);
     }
@@ -3676 +3789 @@
          || (qpen_style(s->lastPen) == Qt::NoPen && !s->flags.antialiased))
         && qMax(rect.width(), rect.height()) < QT_RASTER_COORD_LIMIT
+        && !rect.isEmpty()
         && s->matrix.type() <= QTransform::TxScale) // no shear
     {
@@ -4049 +4163 @@
 }
 
+extern "C" {
+    int q_gray_rendered_spans(QT_FT_Raster raster);
+}
+
 void QRasterPaintEnginePrivate::rasterize(QT_FT_Outline *outline,
                                           ProcessSpans callback,
@@ -4071 +4189 @@
         return;
     }
+
+    // Initial size for raster pool is MINIMUM_POOL_SIZE so as to
+    // minimize memory reallocations. However if initial size for
+    // raster pool is changed for lower value, reallocations will
+    // occur normally.
+    const int rasterPoolInitialSize = MINIMUM_POOL_SIZE;
+    int rasterPoolSize = rasterPoolInitialSize;
+    unsigned char *rasterPoolBase;
+#if defined(Q_WS_WIN64)
+    rasterPoolBase =
+        // We make use of setjmp and longjmp in qgrayraster.c which requires
+        // 16-byte alignment, hence we hardcode this requirement here..
+        (unsigned char *) _aligned_malloc(rasterPoolSize, sizeof(void*) * 2);
+#else
+    unsigned char rasterPoolOnStack[rasterPoolInitialSize];
+    rasterPoolBase = rasterPoolOnStack;
+#endif
+    Q_CHECK_PTR(rasterPoolBase);
+
+    qt_ft_grays_raster.raster_reset(*grayRaster.data(), rasterPoolBase, rasterPoolSize);
 
     void *data = userData;
@@ -4093 +4231 @@
     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...
-        if (error == -6) { // -6 is Result_err_OutOfMemory
+        if (error == -6) { // ErrRaster_OutOfMemory from qgrayraster.c
             int new_size = rasterPoolSize * 2;
             if (new_size > 1024 * 1024) {
                 qWarning("QPainter: Rasterization of primitive failed");
-                return;
+                break;
             }
+
+            rendered_spans += q_gray_rendered_spans(*grayRaster.data());
 
 #if defined(Q_WS_WIN64)
             _aligned_free(rasterPoolBase);
 #else
-            free(rasterPoolBase);
+            if (rasterPoolBase != rasterPoolOnStack) // initially on the stack
+                free(rasterPoolBase);
 #endif
 
@@ -4125 +4269 @@
 
             qt_ft_grays_raster.raster_done(*grayRaster.data());
-            qt_ft_grays_raster.raster_new(0, grayRaster.data());
+            qt_ft_grays_raster.raster_new(grayRaster.data());
             qt_ft_grays_raster.raster_reset(*grayRaster.data(), rasterPoolBase, rasterPoolSize);
         } else {
@@ -4131 +4275 @@
         }
     }
+
+#if defined(Q_WS_WIN64)
+    _aligned_free(rasterPoolBase);
+#else
+    if (rasterPoolBase != rasterPoolOnStack) // initially on the stack
+        free(rasterPoolBase);
+#endif
 }
 
@@ -4812 +4963 @@
             hash_val += stops[i].second.rgba();
 
+        QMutexLocker lock(&mutex);
         QGradientColorTableHash::const_iterator it = cache.constFind(hash_val);
 
@@ -4845 +4997 @@
 
     QGradientColorTableHash cache;
+    QMutex mutex;
 };