147 lines
6.2 KiB
Diff
147 lines
6.2 KiB
Diff
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From b56dbaf5b3247bd8e87e4e856ad845593755c10c Mon Sep 17 00:00:00 2001
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From: =?utf-8?q?Samuel=20R=C3=B8dal?= <samuel.rodal@nokia.com>
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Date: Wed, 28 Sep 2011 15:22:56 +0200
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Subject: [PATCH] Fixed broken window surface flush when depth is 24 and bpp is not 32.
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Some X servers use a compact representation of 24 depth visuals. In that
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case we can't use the shared memory or XPutImage paths, as Qt's RGB32
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does not match the internal memory layout.
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Also fixed QPixmap::fromImage() to work in this case to prevent the red
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and blue channels from being swapped.
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Task-number: QTBUG-21754
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Reviewed-by: Alberto Mardegan
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---
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src/gui/image/qnativeimage.cpp | 12 ++++++------
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src/gui/image/qpixmap_x11.cpp | 18 +++++++++++++-----
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src/gui/kernel/qapplication_x11.cpp | 6 ++++++
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src/gui/kernel/qt_x11_p.h | 2 ++
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src/gui/painting/qwindowsurface_raster.cpp | 5 +++--
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5 files changed, 30 insertions(+), 13 deletions(-)
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diff --git a/src/gui/image/qnativeimage.cpp b/src/gui/image/qnativeimage.cpp
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index aebcbaf..e1382dd 100644
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--- a/src/gui/image/qnativeimage.cpp
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+++ b/src/gui/image/qnativeimage.cpp
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@@ -153,7 +153,12 @@ QImage::Format QNativeImage::systemFormat()
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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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{
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- if (!X11->use_mitshm) {
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+ QX11Info info = widget->x11Info();
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+
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+ int dd = info.depth();
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+ Visual *vis = (Visual*) info.visual();
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+
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+ if (!X11->use_mitshm || format != QImage::Format_RGB16 && X11->bppForDepth.value(dd) != 32) {
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image = QImage(width, height, format);
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// follow good coding practice and set xshminfo attributes, though values not used in this case
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xshminfo.readOnly = true;
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@@ -163,11 +168,6 @@ QNativeImage::QNativeImage(int width, int height, QImage::Format format,bool /*
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return;
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}
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- QX11Info info = widget->x11Info();
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-
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- int dd = info.depth();
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- Visual *vis = (Visual*) info.visual();
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-
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xshmimg = XShmCreateImage(X11->display, vis, dd, ZPixmap, 0, &xshminfo, width, height);
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if (!xshmimg) {
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qWarning("QNativeImage: Unable to create shared XImage.");
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diff --git a/src/gui/image/qpixmap_x11.cpp b/src/gui/image/qpixmap_x11.cpp
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index 77c2a2a..0e1401c 100644
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--- a/src/gui/image/qpixmap_x11.cpp
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+++ b/src/gui/image/qpixmap_x11.cpp
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@@ -897,12 +897,20 @@ void QX11PixmapData::fromImage(const QImage &img,
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}
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)
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break;
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- case BPP24_888: // 24 bit MSB
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+ case BPP24_888:
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CYCLE(
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- for (int x=0; x<w; x++) {
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- *dst++ = qRed (*p);
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- *dst++ = qGreen(*p);
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- *dst++ = qBlue (*p++);
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+ if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
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+ for (int x=0; x<w; x++) {
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+ *dst++ = qRed (*p);
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+ *dst++ = qGreen(*p);
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+ *dst++ = qBlue (*p++);
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+ }
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+ } else {
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+ for (int x=0; x<w; x++) {
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+ *dst++ = qBlue (*p);
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+ *dst++ = qGreen(*p);
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+ *dst++ = qRed (*p++);
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+ }
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}
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)
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break;
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diff --git a/src/gui/kernel/qapplication_x11.cpp b/src/gui/kernel/qapplication_x11.cpp
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index ef8e2b8..408e9ac 100644
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--- a/src/gui/kernel/qapplication_x11.cpp
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+++ b/src/gui/kernel/qapplication_x11.cpp
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@@ -1896,6 +1896,12 @@ void qt_init(QApplicationPrivate *priv, int,
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X11->defaultScreen = DefaultScreen(X11->display);
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X11->screenCount = ScreenCount(X11->display);
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+ int formatCount = 0;
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+ XPixmapFormatValues *values = XListPixmapFormats(X11->display, &formatCount);
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+ for (int i = 0; i < formatCount; ++i)
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+ X11->bppForDepth[values[i].depth] = values[i].bits_per_pixel;
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+ XFree(values);
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+
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X11->screens = new QX11InfoData[X11->screenCount];
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X11->argbVisuals = new Visual *[X11->screenCount];
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X11->argbColormaps = new Colormap[X11->screenCount];
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diff --git a/src/gui/kernel/qt_x11_p.h b/src/gui/kernel/qt_x11_p.h
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index 72acaf3..fe4a631 100644
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--- a/src/gui/kernel/qt_x11_p.h
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+++ b/src/gui/kernel/qt_x11_p.h
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@@ -54,6 +54,7 @@
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//
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#include "QtGui/qwindowdefs.h"
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+#include "QtCore/qhash.h"
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#include "QtCore/qlist.h"
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#include "QtCore/qvariant.h"
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@@ -467,6 +468,7 @@ struct QX11Data
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Colormap *argbColormaps;
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int screenCount;
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int defaultScreen;
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+ QHash<int, int> bppForDepth;
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Time time;
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Time userTime;
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diff --git a/src/gui/painting/qwindowsurface_raster.cpp b/src/gui/painting/qwindowsurface_raster.cpp
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index 15ff044..2a25bff 100644
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--- a/src/gui/painting/qwindowsurface_raster.cpp
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+++ b/src/gui/painting/qwindowsurface_raster.cpp
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@@ -254,8 +254,9 @@ void QRasterWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoi
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} else
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#endif
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{
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+ int depth = widget->x11Info().depth();
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const QImage &src = d->image->image;
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- if (src.format() != QImage::Format_RGB32 || widget->x11Info().depth() < 24) {
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+ if (src.format() != QImage::Format_RGB32 || depth < 24 || X11->bppForDepth.value(depth) != 32) {
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Q_ASSERT(src.depth() >= 16);
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const QImage sub_src(src.scanLine(br.y()) + br.x() * (uint(src.depth()) / 8),
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br.width(), br.height(), src.bytesPerLine(), src.format());
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@@ -267,7 +268,7 @@ void QRasterWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoi
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} else {
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// qpaintengine_x11.cpp
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extern void qt_x11_drawImage(const QRect &rect, const QPoint &pos, const QImage &image, Drawable hd, GC gc, Display *dpy, Visual *visual, int depth);
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- qt_x11_drawImage(br, wpos, src, widget->handle(), d_ptr->gc, X11->display, (Visual *)widget->x11Info().visual(), widget->x11Info().depth());
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+ qt_x11_drawImage(br, wpos, src, widget->handle(), d_ptr->gc, X11->display, (Visual *)widget->x11Info().visual(), depth);
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}
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}
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--
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1.6.1
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