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diff -up qt-x11-opensource-src-4.5.3/src/gui/image/qnativeimage.cpp.me qt-x11-opensource-src-4.5.3/src/gui/image/qnativeimage.cpp
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--- qt-x11-opensource-src-4.5.3/src/gui/image/qnativeimage.cpp.me 2009-10-02 18:26:02.000000000 +0200
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+++ qt-x11-opensource-src-4.5.3/src/gui/image/qnativeimage.cpp 2009-10-02 18:27:13.000000000 +0200
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@@ -144,7 +144,7 @@ QImage::Format QNativeImage::systemForma
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#elif defined(Q_WS_X11) && !defined(QT_NO_MITSHM)
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QNativeImage::QNativeImage(int width, int height, QImage::Format format,bool /* isTextBuffer */, QWidget *widget)
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- : xshmimg(0), xshmpm(0)
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+ : xshmimg(0)
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{
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if (!X11->use_mitshm) {
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image = QImage(width, height, format);
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@@ -195,11 +195,6 @@ QNativeImage::QNativeImage(int width, in
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shmctl(xshminfo.shmid, IPC_RMID, 0);
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return;
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}
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- xshmpm = XShmCreatePixmap(X11->display, DefaultRootWindow(X11->display), xshmimg->data,
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- &xshminfo, width, height, dd);
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- if (!xshmpm) {
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- qWarning() << "QNativeImage: Unable to create shared Pixmap.";
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- }
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}
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@@ -208,10 +203,6 @@ QNativeImage::~QNativeImage()
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if (!xshmimg)
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return;
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- if (xshmpm) {
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- XFreePixmap(X11->display, xshmpm);
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- xshmpm = 0;
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- }
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XShmDetach(X11->display, &xshminfo);
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xshmimg->data = 0;
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XDestroyImage(xshmimg);
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diff -up qt-x11-opensource-src-4.5.3/src/gui/image/qnativeimage_p.h.me qt-x11-opensource-src-4.5.3/src/gui/image/qnativeimage_p.h
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--- qt-x11-opensource-src-4.5.3/src/gui/image/qnativeimage_p.h.me 2009-10-02 18:33:38.000000000 +0200
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+++ qt-x11-opensource-src-4.5.3/src/gui/image/qnativeimage_p.h 2009-10-02 18:34:01.000000000 +0200
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@@ -90,7 +90,6 @@ public:
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#elif defined(Q_WS_X11) && !defined(QT_NO_MITSHM)
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XImage *xshmimg;
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- Pixmap xshmpm;
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XShmSegmentInfo xshminfo;
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#elif defined(Q_WS_MAC)
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diff -up qt-x11-opensource-src-4.5.3/src/gui/kernel/qapplication_x11.cpp.me qt-x11-opensource-src-4.5.3/src/gui/kernel/qapplication_x11.cpp
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--- qt-x11-opensource-src-4.5.3/src/gui/kernel/qapplication_x11.cpp.me 2009-10-02 18:27:55.000000000 +0200
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+++ qt-x11-opensource-src-4.5.3/src/gui/kernel/qapplication_x11.cpp 2009-10-02 18:33:30.000000000 +0200
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@@ -1959,12 +1959,9 @@ void qt_init(QApplicationPrivate *priv,
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bool local = displayName.isEmpty() || displayName.lastIndexOf(QLatin1Char(':')) == 0;
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if (local && (qgetenv("QT_X11_NO_MITSHM").toInt() == 0)) {
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Visual *defaultVisual = DefaultVisual(X11->display, DefaultScreen(X11->display));
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- X11->use_mitshm = mitshm_pixmaps && ((defaultVisual->red_mask == 0xff0000
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- || defaultVisual->red_mask == 0xf800)
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- && (defaultVisual->green_mask == 0xff00
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- || defaultVisual->green_mask == 0x7e0)
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- && (defaultVisual->blue_mask == 0xff
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- || defaultVisual->blue_mask == 0x1f));
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+ X11->use_mitshm = (defaultVisual->red_mask == 0xff0000 || defaultVisual->red_mask == 0xf800)
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+ && (defaultVisual->green_mask == 0xff00 || defaultVisual->green_mask == 0x7e0)
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+ && (defaultVisual->blue_mask == 0xff || defaultVisual->blue_mask == 0x1f);
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}
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}
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#endif // QT_NO_MITSHM
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diff -up qt-x11-opensource-src-4.5.3/src/gui/painting/qwindowsurface_raster.cpp.me qt-x11-opensource-src-4.5.3/src/gui/painting/qwindowsurface_raster.cpp
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--- qt-x11-opensource-src-4.5.3/src/gui/painting/qwindowsurface_raster.cpp.me 2009-10-02 18:34:18.000000000 +0200
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+++ qt-x11-opensource-src-4.5.3/src/gui/painting/qwindowsurface_raster.cpp 2009-10-02 18:35:54.000000000 +0200
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@@ -220,9 +220,16 @@ void QRasterWindowSurface::flush(QWidget
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QRect br = rgn.boundingRect().translated(offset);
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#ifndef QT_NO_MITSHM
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- if (d_ptr->image->xshmpm) {
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- XCopyArea(X11->display, d_ptr->image->xshmpm, widget->handle(), d_ptr->gc,
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- br.x(), br.y(), br.width(), br.height(), wbr.x(), wbr.y());
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+ if (d_ptr->image->xshmimg && (br.width() * br.height() > 65536)) {
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+ const QImage &src = d->image->image;
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+ br = br.intersected(src.rect());
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+ // Hack to make sure we satisify the PutImage() constraints in the X server,
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+ // since the doShmPutImage() route currently forces a migration to system ram.
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+ wbr.setX(wbr.x() - br.x());
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+ br.setX(0);
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+ br.setWidth(src.width());
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+ XShmPutImage(X11->display, widget->handle(), d_ptr->gc, d_ptr->image->xshmimg,
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+ br.x(), br.y(), wbr.x(), wbr.y(), br.width(), br.height(), False);
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XSync(X11->display, False);
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} else
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#endif
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