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Diffstat (limited to 'src/opengl/qgl_x11.cpp')
| -rw-r--r-- | src/opengl/qgl_x11.cpp | 1425 |
1 files changed, 1425 insertions, 0 deletions
diff --git a/src/opengl/qgl_x11.cpp b/src/opengl/qgl_x11.cpp new file mode 100644 index 0000000..28c34de --- /dev/null +++ b/src/opengl/qgl_x11.cpp @@ -0,0 +1,1425 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtOpenGL module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qgl.h" +#include "qgl_p.h" + +#include "qmap.h" +#include "qapplication.h" +#include "qcolormap.h" +#include "qdesktopwidget.h" +#include "qpixmap.h" +#include "qhash.h" +#include "qlibrary.h" +#include "qdebug.h" +#include <private/qfontengine_ft_p.h> +#include <private/qt_x11_p.h> +#ifdef Q_OS_HPUX +// for GLXPBuffer +#include <private/qglpixelbuffer_p.h> +#endif + +#define INT8 dummy_INT8 +#define INT32 dummy_INT32 +#include <GL/glx.h> +#undef INT8 +#undef INT32 +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/Xos.h> +#include <X11/Xatom.h> + +#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4) +#include <dlfcn.h> +#endif + +QT_BEGIN_NAMESPACE + +extern Drawable qt_x11Handle(const QPaintDevice *pd); +extern const QX11Info *qt_x11Info(const QPaintDevice *pd); + +#ifndef GLX_ARB_multisample +#define GLX_SAMPLE_BUFFERS_ARB 100000 +#define GLX_SAMPLES_ARB 100001 +#endif + +/* + The qt_gl_choose_cmap function is internal and used by QGLWidget::setContext() + and GLX (not Windows). If the application can't find any sharable + colormaps, it must at least create as few colormaps as possible. The + dictionary solution below ensures only one colormap is created per visual. + Colormaps are also deleted when the application terminates. +*/ + +struct QCMapEntry { + QCMapEntry(); + ~QCMapEntry(); + + Colormap cmap; + bool alloc; + XStandardColormap scmap; +}; + +QCMapEntry::QCMapEntry() +{ + cmap = 0; + alloc = false; + scmap.colormap = 0; +} + +QCMapEntry::~QCMapEntry() +{ + if (alloc) + XFreeColormap(X11->display, cmap); +} +typedef QHash<int, QCMapEntry *> CMapEntryHash; +typedef QHash<int, QMap<int, QRgb> > GLCMapHash; +static bool mesa_gl = false; +static bool first_time = true; + +static void cleanup_cmaps(); + +struct QGLCMapCleanupHandler { + QGLCMapCleanupHandler() { + cmap_hash = new CMapEntryHash; + qglcmap_hash = new GLCMapHash; + } + ~QGLCMapCleanupHandler() { + delete cmap_hash; + delete qglcmap_hash; + } + CMapEntryHash *cmap_hash; + GLCMapHash *qglcmap_hash; +}; +Q_GLOBAL_STATIC(QGLCMapCleanupHandler, cmap_handler); + +static void cleanup_cmaps() +{ + CMapEntryHash *hash = cmap_handler()->cmap_hash; + QHash<int, QCMapEntry *>::ConstIterator it = hash->constBegin(); + while (it != hash->constEnd()) { + delete it.value(); + ++it; + } + + hash->clear(); + cmap_handler()->qglcmap_hash->clear(); +} + +Colormap qt_gl_choose_cmap(Display *dpy, XVisualInfo *vi) +{ + if (first_time) { + const char *v = glXQueryServerString(dpy, vi->screen, GLX_VERSION); + if (v) + mesa_gl = (strstr(v, "Mesa") != 0); + first_time = false; + } + + CMapEntryHash *hash = cmap_handler()->cmap_hash; + CMapEntryHash::ConstIterator it = hash->constFind((long) vi->visualid + (vi->screen * 256)); + if (it != hash->constEnd()) + return it.value()->cmap; // found colormap for visual + + if (vi->visualid == + XVisualIDFromVisual((Visual *) QX11Info::appVisual(vi->screen))) { + // qDebug("Using x11AppColormap"); + return QX11Info::appColormap(vi->screen); + } + + QCMapEntry *x = new QCMapEntry(); + + XStandardColormap *c; + int n, i; + + // qDebug("Choosing cmap for vID %0x", vi->visualid); + + if (mesa_gl) { // we're using MesaGL + Atom hp_cmaps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", true); + if (hp_cmaps && vi->visual->c_class == TrueColor && vi->depth == 8) { + if (XGetRGBColormaps(dpy,RootWindow(dpy,vi->screen),&c,&n, + hp_cmaps)) { + i = 0; + while (i < n && x->cmap == 0) { + if (c[i].visualid == vi->visual->visualid) { + x->cmap = c[i].colormap; + x->scmap = c[i]; + //qDebug("Using HP_RGB scmap"); + + } + i++; + } + XFree((char *)c); + } + } + } + if (!x->cmap) { + if (XGetRGBColormaps(dpy,RootWindow(dpy,vi->screen),&c,&n, + XA_RGB_DEFAULT_MAP)) { + for (int i = 0; i < n && x->cmap == 0; ++i) { + if (!c[i].red_max || + !c[i].green_max || + !c[i].blue_max || + !c[i].red_mult || + !c[i].green_mult || + !c[i].blue_mult) + continue; // invalid stdcmap + if (c[i].visualid == vi->visualid) { + x->cmap = c[i].colormap; + x->scmap = c[i]; + //qDebug("Using RGB_DEFAULT scmap"); + } + } + XFree((char *)c); + } + } + if (!x->cmap) { // no shared cmap found + x->cmap = XCreateColormap(dpy, RootWindow(dpy,vi->screen), vi->visual, + AllocNone); + x->alloc = true; + // qDebug("Allocating cmap"); + } + + // colormap hash should be cleanup only when the QApplication dtor is called + if (hash->isEmpty()) + qAddPostRoutine(cleanup_cmaps); + + // associate cmap with visualid + hash->insert((long) vi->visualid + (vi->screen * 256), x); + return x->cmap; +} + +struct QTransColor +{ + VisualID vis; + int screen; + long color; +}; + +static QVector<QTransColor> trans_colors; +static int trans_colors_init = false; + +static void find_trans_colors() +{ + struct OverlayProp { + long visual; + long type; + long value; + long layer; + }; + + trans_colors_init = true; + + Display* appDisplay = X11->display; + + int scr; + int lastsize = 0; + for (scr = 0; scr < ScreenCount(appDisplay); scr++) { + QWidget* rootWin = QApplication::desktop()->screen(scr); + if (!rootWin) + return; // Should not happen + Atom overlayVisualsAtom = XInternAtom(appDisplay, + "SERVER_OVERLAY_VISUALS", True); + if (overlayVisualsAtom == XNone) + return; // Server has no overlays + + Atom actualType; + int actualFormat; + ulong nItems; + ulong bytesAfter; + unsigned char *retval = 0; + int res = XGetWindowProperty(appDisplay, rootWin->winId(), + overlayVisualsAtom, 0, 10000, False, + overlayVisualsAtom, &actualType, + &actualFormat, &nItems, &bytesAfter, + &retval); + + if (res != Success || actualType != overlayVisualsAtom + || actualFormat != 32 || nItems < 4 || !retval) + return; // Error reading property + + OverlayProp *overlayProps = (OverlayProp *)retval; + + int numProps = nItems / 4; + trans_colors.resize(lastsize + numProps); + int j = lastsize; + for (int i = 0; i < numProps; i++) { + if (overlayProps[i].type == 1) { + trans_colors[j].vis = (VisualID)overlayProps[i].visual; + trans_colors[j].screen = scr; + trans_colors[j].color = (int)overlayProps[i].value; + j++; + } + } + XFree(overlayProps); + lastsize = j; + trans_colors.resize(lastsize); + } +} + +/***************************************************************************** + QGLFormat UNIX/GLX-specific code + *****************************************************************************/ + +bool QGLFormat::hasOpenGL() +{ + return glXQueryExtension(X11->display, 0, 0) != 0; +} + + +bool QGLFormat::hasOpenGLOverlays() +{ + if (!trans_colors_init) + find_trans_colors(); + return trans_colors.size() > 0; +} + +/***************************************************************************** + QGLContext UNIX/GLX-specific code + *****************************************************************************/ + +bool QGLContext::chooseContext(const QGLContext* shareContext) +{ + Q_D(QGLContext); + const QX11Info *xinfo = qt_x11Info(d->paintDevice); + + Display* disp = xinfo->display(); + d->vi = chooseVisual(); + if (!d->vi) + return false; + + if (deviceIsPixmap() && + (((XVisualInfo*)d->vi)->depth != xinfo->depth() || + ((XVisualInfo*)d->vi)->screen != xinfo->screen())) + { + XFree(d->vi); + XVisualInfo appVisInfo; + memset(&appVisInfo, 0, sizeof(XVisualInfo)); + appVisInfo.visualid = XVisualIDFromVisual((Visual *) xinfo->visual()); + appVisInfo.screen = xinfo->screen(); + int nvis; + d->vi = XGetVisualInfo(disp, VisualIDMask | VisualScreenMask, &appVisInfo, &nvis); + if (!d->vi) + return false; + + int useGL; + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_USE_GL, &useGL); + if (!useGL) + return false; //# Chickening out already... + } + int res; + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_LEVEL, &res); + d->glFormat.setPlane(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_DOUBLEBUFFER, &res); + d->glFormat.setDoubleBuffer(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_DEPTH_SIZE, &res); + d->glFormat.setDepth(res); + if (d->glFormat.depth()) + d->glFormat.setDepthBufferSize(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_RGBA, &res); + d->glFormat.setRgba(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_RED_SIZE, &res); + d->glFormat.setRedBufferSize(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_GREEN_SIZE, &res); + d->glFormat.setGreenBufferSize(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_BLUE_SIZE, &res); + d->glFormat.setBlueBufferSize(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_ALPHA_SIZE, &res); + d->glFormat.setAlpha(res); + if (d->glFormat.alpha()) + d->glFormat.setAlphaBufferSize(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_ACCUM_RED_SIZE, &res); + d->glFormat.setAccum(res); + if (d->glFormat.accum()) + d->glFormat.setAccumBufferSize(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_STENCIL_SIZE, &res); + d->glFormat.setStencil(res); + if (d->glFormat.stencil()) + d->glFormat.setStencilBufferSize(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_STEREO, &res); + d->glFormat.setStereo(res); + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_SAMPLE_BUFFERS_ARB, &res); + d->glFormat.setSampleBuffers(res); + if (d->glFormat.sampleBuffers()) { + glXGetConfig(disp, (XVisualInfo*)d->vi, GLX_SAMPLES_ARB, &res); + d->glFormat.setSamples(res); + } + + Bool direct = format().directRendering() ? True : False; + + if (shareContext && + (!shareContext->isValid() || !shareContext->d_func()->cx)) { + qWarning("QGLContext::chooseContext(): Cannot share with invalid context"); + shareContext = 0; + } + + // 1. Sharing between rgba and color-index will give wrong colors. + // 2. Contexts cannot be shared btw. direct/non-direct renderers. + // 3. Pixmaps cannot share contexts that are set up for direct rendering. + // 4. If the contexts are not created on the same screen, they can't be shared + + if (shareContext + && (format().rgba() != shareContext->format().rgba() + || (deviceIsPixmap() && glXIsDirect(disp, (GLXContext)shareContext->d_func()->cx)) + || (shareContext->d_func()->screen != xinfo->screen()))) + { + shareContext = 0; + } + + d->cx = 0; + if (shareContext) { + d->cx = glXCreateContext(disp, (XVisualInfo *)d->vi, + (GLXContext)shareContext->d_func()->cx, direct); + d->screen = ((XVisualInfo*)d->vi)->screen; + if (d->cx) { + QGLContext *share = const_cast<QGLContext *>(shareContext); + d->sharing = true; + share->d_func()->sharing = true; + } + } + if (!d->cx) { + d->cx = glXCreateContext(disp, (XVisualInfo *)d->vi, NULL, direct); + d->screen = ((XVisualInfo*)d->vi)->screen; + } + if (!d->cx) + return false; + d->glFormat.setDirectRendering(glXIsDirect(disp, (GLXContext)d->cx)); + if (deviceIsPixmap()) { +#if defined(GLX_MESA_pixmap_colormap) && defined(QGL_USE_MESA_EXT) + d->gpm = glXCreateGLXPixmapMESA(disp, (XVisualInfo *)d->vi, + qt_x11Handle(d->paintDevice), + qt_gl_choose_cmap(disp, (XVisualInfo *)d->vi)); +#else + d->gpm = (quint32)glXCreateGLXPixmap(disp, (XVisualInfo *)d->vi, + qt_x11Handle(d->paintDevice)); +#endif + if (!d->gpm) + return false; + } + QString glxExt = QString(QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS))); + if (glxExt.contains(QLatin1String("GLX_SGI_video_sync"))) { + if (d->glFormat.swapInterval() == -1) + d->glFormat.setSwapInterval(0); + } else { + d->glFormat.setSwapInterval(-1); + } + return true; +} + + +/*! + \bold{X11 only:} This virtual function tries to find a + visual that matches the format, reducing the demands if the original + request cannot be met. + + The algorithm for reducing the demands of the format is quite + simple-minded, so override this method in your subclass if your + application has spcific requirements on visual selection. + + \sa chooseContext() +*/ + +void *QGLContext::chooseVisual() +{ + Q_D(QGLContext); + static const int bufDepths[] = { 8, 4, 2, 1 }; // Try 16, 12 also? + //todo: if pixmap, also make sure that vi->depth == pixmap->depth + void* vis = 0; + int i = 0; + bool fail = false; + QGLFormat fmt = format(); + bool tryDouble = !fmt.doubleBuffer(); // Some GL impl's only have double + bool triedDouble = false; + bool triedSample = false; + if (fmt.sampleBuffers()) + fmt.setSampleBuffers(QGLExtensions::glExtensions & QGLExtensions::SampleBuffers); + while(!fail && !(vis = tryVisual(fmt, bufDepths[i]))) { + if (!fmt.rgba() && bufDepths[i] > 1) { + i++; + continue; + } + if (tryDouble) { + fmt.setDoubleBuffer(true); + tryDouble = false; + triedDouble = true; + continue; + } else if (triedDouble) { + fmt.setDoubleBuffer(false); + triedDouble = false; + } + if (!triedSample && fmt.sampleBuffers()) { + fmt.setSampleBuffers(false); + triedSample = true; + continue; + } + if (fmt.stereo()) { + fmt.setStereo(false); + continue; + } + if (fmt.accum()) { + fmt.setAccum(false); + continue; + } + if (fmt.stencil()) { + fmt.setStencil(false); + continue; + } + if (fmt.alpha()) { + fmt.setAlpha(false); + continue; + } + if (fmt.depth()) { + fmt.setDepth(false); + continue; + } + if (fmt.doubleBuffer()) { + fmt.setDoubleBuffer(false); + continue; + } + fail = true; + } + d->glFormat = fmt; + return vis; +} + + +/*! + \internal + + \bold{X11 only:} This virtual function chooses a visual + that matches the OpenGL \link format() format\endlink. Reimplement this + function in a subclass if you need a custom visual. + + \sa chooseContext() +*/ + +void *QGLContext::tryVisual(const QGLFormat& f, int bufDepth) +{ + Q_D(QGLContext); + int spec[40]; + int i = 0; + spec[i++] = GLX_LEVEL; + spec[i++] = f.plane(); + const QX11Info *xinfo = qt_x11Info(d->paintDevice); + +#if defined(GLX_VERSION_1_1) && defined(GLX_EXT_visual_info) + static bool useTranspExt = false; + static bool useTranspExtChecked = false; + if (f.plane() && !useTranspExtChecked && d->paintDevice) { + QByteArray estr(glXQueryExtensionsString(xinfo->display(), xinfo->screen())); + useTranspExt = estr.contains("GLX_EXT_visual_info"); + //# (A bit simplistic; that could theoretically be a substring) + if (useTranspExt) { + QByteArray cstr(glXGetClientString(xinfo->display(), GLX_VENDOR)); + useTranspExt = !cstr.contains("Xi Graphics"); // bug workaround + if (useTranspExt) { + // bug workaround - some systems (eg. FireGL) refuses to return an overlay + // visual if the GLX_TRANSPARENT_TYPE_EXT attribute is specified, even if + // the implementation supports transparent overlays + int tmpSpec[] = { GLX_LEVEL, f.plane(), GLX_TRANSPARENT_TYPE_EXT, + f.rgba() ? GLX_TRANSPARENT_RGB_EXT : GLX_TRANSPARENT_INDEX_EXT, + XNone }; + XVisualInfo * vinf = glXChooseVisual(xinfo->display(), xinfo->screen(), tmpSpec); + if (!vinf) { + useTranspExt = false; + } + } + } + + useTranspExtChecked = true; + } + if (f.plane() && useTranspExt) { + // Required to avoid non-transparent overlay visual(!) on some systems + spec[i++] = GLX_TRANSPARENT_TYPE_EXT; + spec[i++] = f.rgba() ? GLX_TRANSPARENT_RGB_EXT : GLX_TRANSPARENT_INDEX_EXT; + } +#endif + + if (f.doubleBuffer()) + spec[i++] = GLX_DOUBLEBUFFER; + if (f.depth()) { + spec[i++] = GLX_DEPTH_SIZE; + spec[i++] = f.depthBufferSize() == -1 ? 1 : f.depthBufferSize(); + } + if (f.stereo()) { + spec[i++] = GLX_STEREO; + } + if (f.stencil()) { + spec[i++] = GLX_STENCIL_SIZE; + spec[i++] = f.stencilBufferSize() == -1 ? 1 : f.stencilBufferSize(); + } + if (f.rgba()) { + spec[i++] = GLX_RGBA; + spec[i++] = GLX_RED_SIZE; + spec[i++] = f.redBufferSize() == -1 ? 1 : f.redBufferSize(); + spec[i++] = GLX_GREEN_SIZE; + spec[i++] = f.greenBufferSize() == -1 ? 1 : f.greenBufferSize(); + spec[i++] = GLX_BLUE_SIZE; + spec[i++] = f.blueBufferSize() == -1 ? 1 : f.blueBufferSize(); + if (f.alpha()) { + spec[i++] = GLX_ALPHA_SIZE; + spec[i++] = f.alphaBufferSize() == -1 ? 1 : f.alphaBufferSize(); + } + if (f.accum()) { + spec[i++] = GLX_ACCUM_RED_SIZE; + spec[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize(); + spec[i++] = GLX_ACCUM_GREEN_SIZE; + spec[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize(); + spec[i++] = GLX_ACCUM_BLUE_SIZE; + spec[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize(); + if (f.alpha()) { + spec[i++] = GLX_ACCUM_ALPHA_SIZE; + spec[i++] = f.accumBufferSize() == -1 ? 1 : f.accumBufferSize(); + } + } + } else { + spec[i++] = GLX_BUFFER_SIZE; + spec[i++] = bufDepth; + } + + if (f.sampleBuffers()) { + spec[i++] = GLX_SAMPLE_BUFFERS_ARB; + spec[i++] = 1; + spec[i++] = GLX_SAMPLES_ARB; + spec[i++] = f.samples() == -1 ? 4 : f.samples(); + } + + spec[i] = XNone; + return glXChooseVisual(xinfo->display(), xinfo->screen(), spec); +} + + +void QGLContext::reset() +{ + Q_D(QGLContext); + if (!d->valid) + return; + d->cleanup(); + const QX11Info *xinfo = qt_x11Info(d->paintDevice); + doneCurrent(); + if (d->gpm) + glXDestroyGLXPixmap(xinfo->display(), (GLXPixmap)d->gpm); + d->gpm = 0; + glXDestroyContext(xinfo->display(), (GLXContext)d->cx); + if (d->vi) + XFree(d->vi); + d->vi = 0; + d->cx = 0; + d->crWin = false; + d->sharing = false; + d->valid = false; + d->transpColor = QColor(); + d->initDone = false; + qgl_share_reg()->removeShare(this); +} + + +void QGLContext::makeCurrent() +{ + Q_D(QGLContext); + if (!d->valid) { + qWarning("QGLContext::makeCurrent(): Cannot make invalid context current."); + return; + } + const QX11Info *xinfo = qt_x11Info(d->paintDevice); + bool ok = true; + if (d->paintDevice->devType() == QInternal::Pixmap) { + ok = glXMakeCurrent(xinfo->display(), (GLXPixmap)d->gpm, (GLXContext)d->cx); + } else if (d->paintDevice->devType() == QInternal::Pbuffer) { + ok = glXMakeCurrent(xinfo->display(), (GLXPbuffer)d->pbuf, (GLXContext)d->cx); + } else if (d->paintDevice->devType() == QInternal::Widget) { + ok = glXMakeCurrent(xinfo->display(), ((QWidget *)d->paintDevice)->winId(), (GLXContext)d->cx); + } + if (!ok) + qWarning("QGLContext::makeCurrent(): Failed."); + + if (ok) { + if (!qgl_context_storage.hasLocalData() && QThread::currentThread()) + qgl_context_storage.setLocalData(new QGLThreadContext); + if (qgl_context_storage.hasLocalData()) + qgl_context_storage.localData()->context = this; + currentCtx = this; + } +} + +void QGLContext::doneCurrent() +{ + Q_D(QGLContext); + glXMakeCurrent(qt_x11Info(d->paintDevice)->display(), 0, 0); + if (qgl_context_storage.hasLocalData()) + qgl_context_storage.localData()->context = 0; + currentCtx = 0; +} + + +void QGLContext::swapBuffers() const +{ + Q_D(const QGLContext); + if (!d->valid) + return; + if (!deviceIsPixmap()) { + int interval = d->glFormat.swapInterval(); + if (interval > 0) { + typedef int (*qt_glXGetVideoSyncSGI)(uint *); + typedef int (*qt_glXWaitVideoSyncSGI)(int, int, uint *); + static qt_glXGetVideoSyncSGI glXGetVideoSyncSGI = 0; + static qt_glXWaitVideoSyncSGI glXWaitVideoSyncSGI = 0; + static bool resolved = false; + if (!resolved) { + QString glxExt = QString(QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS))); + if (glxExt.contains(QLatin1String("GLX_SGI_video_sync"))) { +#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4) + void *handle = dlopen(NULL, RTLD_LAZY); + if (handle) { + glXGetVideoSyncSGI = (qt_glXGetVideoSyncSGI) dlsym(handle, "glXGetVideoSyncSGI"); + glXWaitVideoSyncSGI = (qt_glXWaitVideoSyncSGI) dlsym(handle, "glXWaitVideoSyncSGI"); + dlclose(handle); + } + if (!glXGetVideoSyncSGI) +#endif + { + extern const QString qt_gl_library_name(); + QLibrary lib(qt_gl_library_name()); + glXGetVideoSyncSGI = (qt_glXGetVideoSyncSGI) lib.resolve("glXGetVideoSyncSGI"); + glXWaitVideoSyncSGI = (qt_glXWaitVideoSyncSGI) lib.resolve("glXWaitVideoSyncSGI"); + } + } + resolved = true; + } + if (glXGetVideoSyncSGI && glXWaitVideoSyncSGI) { + uint counter; + if (!glXGetVideoSyncSGI(&counter)) + glXWaitVideoSyncSGI(interval + 1, (counter + interval) % (interval + 1), &counter); + } + } + glXSwapBuffers(qt_x11Info(d->paintDevice)->display(), + static_cast<QWidget *>(d->paintDevice)->winId()); + } +} + +QColor QGLContext::overlayTransparentColor() const +{ + if (isValid()) + return Qt::transparent; + return QColor(); // Invalid color +} + +static uint qt_transparent_pixel(VisualID id, int screen) +{ + for (int i = 0; i < trans_colors.size(); i++) { + if (trans_colors[i].vis == id && trans_colors[i].screen == screen) + return trans_colors[i].color; + } + return 0; +} + +uint QGLContext::colorIndex(const QColor& c) const +{ + Q_D(const QGLContext); + int screen = ((XVisualInfo *)d->vi)->screen; + QColormap colmap = QColormap::instance(screen); + if (isValid()) { + if (format().plane() && c == Qt::transparent) { + return qt_transparent_pixel(((XVisualInfo *)d->vi)->visualid, + ((XVisualInfo *)d->vi)->screen); + } + if (((XVisualInfo*)d->vi)->visualid == + XVisualIDFromVisual((Visual *) QX11Info::appVisual(screen))) + return colmap.pixel(c); // We're using QColor's cmap + + XVisualInfo *info = (XVisualInfo *) d->vi; + CMapEntryHash *hash = cmap_handler()->cmap_hash; + CMapEntryHash::ConstIterator it = hash->constFind(long(info->visualid) + + (info->screen * 256)); + QCMapEntry *x = 0; + if (it != hash->constEnd()) + x = it.value(); + if (x && !x->alloc) { // It's a standard colormap + int rf = (int)(((float)c.red() * (x->scmap.red_max+1))/256.0); + int gf = (int)(((float)c.green() * (x->scmap.green_max+1))/256.0); + int bf = (int)(((float)c.blue() * (x->scmap.blue_max+1))/256.0); + uint p = x->scmap.base_pixel + + (rf * x->scmap.red_mult) + + (gf * x->scmap.green_mult) + + (bf * x->scmap.blue_mult); + return p; + } else { + QMap<int, QRgb> &cmap = (*cmap_handler()->qglcmap_hash)[(long)info->visualid]; + + // already in the map? + QRgb target = c.rgb(); + QMap<int, QRgb>::Iterator it = cmap.begin(); + for (; it != cmap.end(); ++it) { + if ((*it) == target) + return it.key(); + } + + // need to alloc color + unsigned long plane_mask[2]; + unsigned long color_map_entry; + if (!XAllocColorCells (QX11Info::display(), x->cmap, true, plane_mask, 0, + &color_map_entry, 1)) + return colmap.pixel(c); + + XColor col; + col.flags = DoRed | DoGreen | DoBlue; + col.pixel = color_map_entry; + col.red = (ushort)((qRed(c.rgb()) / 255.0) * 65535.0 + 0.5); + col.green = (ushort)((qGreen(c.rgb()) / 255.0) * 65535.0 + 0.5); + col.blue = (ushort)((qBlue(c.rgb()) / 255.0) * 65535.0 + 0.5); + XStoreColor(QX11Info::display(), x->cmap, &col); + + cmap.insert(color_map_entry, target); + return color_map_entry; + } + } + return 0; +} + +#ifndef QT_NO_FONTCONFIG +/*! \internal + This is basically a substitute for glxUseXFont() which can only + handle XLFD fonts. This version relies on freetype to render the + glyphs, but it works with all fonts that fontconfig provides - both + antialiased and aliased bitmap and outline fonts. +*/ +static void qgl_use_font(QFontEngineFT *engine, int first, int count, int listBase) +{ + GLfloat color[4]; + glGetFloatv(GL_CURRENT_COLOR, color); + + // save the pixel unpack state + GLint gl_swapbytes, gl_lsbfirst, gl_rowlength, gl_skiprows, gl_skippixels, gl_alignment; + glGetIntegerv (GL_UNPACK_SWAP_BYTES, &gl_swapbytes); + glGetIntegerv (GL_UNPACK_LSB_FIRST, &gl_lsbfirst); + glGetIntegerv (GL_UNPACK_ROW_LENGTH, &gl_rowlength); + glGetIntegerv (GL_UNPACK_SKIP_ROWS, &gl_skiprows); + glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &gl_skippixels); + glGetIntegerv (GL_UNPACK_ALIGNMENT, &gl_alignment); + + glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE); + glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE); + glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); + glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); + glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); + glPixelStorei(GL_UNPACK_ALIGNMENT, 1); + + const bool antialiased = engine->drawAntialiased(); + FT_Face face = engine->lockFace(); + + // start generating font glyphs + for (int i = first; i < count; ++i) { + int list = listBase + i; + GLfloat x0, y0, dx, dy; + + FT_Error err; + + err = FT_Load_Glyph(face, FT_Get_Char_Index(face, i), FT_LOAD_DEFAULT); + if (err) { + qDebug("failed loading glyph %d from font", i); + Q_ASSERT(!err); + } + err = FT_Render_Glyph(face->glyph, (antialiased ? FT_RENDER_MODE_NORMAL + : FT_RENDER_MODE_MONO)); + if (err) { + qDebug("failed rendering glyph %d from font", i); + Q_ASSERT(!err); + } + + FT_Bitmap bm = face->glyph->bitmap; + x0 = face->glyph->metrics.horiBearingX >> 6; + y0 = (face->glyph->metrics.height - face->glyph->metrics.horiBearingY) >> 6; + dx = face->glyph->metrics.horiAdvance >> 6; + dy = 0; + int sz = bm.pitch * bm.rows; + uint *aa_glyph = 0; + uchar *ua_glyph = 0; + + if (antialiased) + aa_glyph = new uint[sz]; + else + ua_glyph = new uchar[sz]; + + // convert to GL format + for (int y = 0; y < bm.rows; ++y) { + for (int x = 0; x < bm.pitch; ++x) { + int c1 = y*bm.pitch + x; + int c2 = (bm.rows - y - 1) > 0 ? (bm.rows-y-1)*bm.pitch + x : x; + if (antialiased) { + aa_glyph[c1] = (int(color[0]*255) << 24) + | (int(color[1]*255) << 16) + | (int(color[2]*255) << 8) | bm.buffer[c2]; + } else { + ua_glyph[c1] = bm.buffer[c2]; + } + } + } + + glNewList(list, GL_COMPILE); + if (antialiased) { + // calling glBitmap() is just a trick to move the current + // raster pos, since glGet*() won't work in display lists + glBitmap(0, 0, 0, 0, x0, -y0, 0); + glDrawPixels(bm.pitch, bm.rows, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, aa_glyph); + glBitmap(0, 0, 0, 0, dx-x0, y0, 0); + } else { + glBitmap(bm.pitch*8, bm.rows, -x0, y0, dx, dy, ua_glyph); + } + glEndList(); + antialiased ? delete[] aa_glyph : delete[] ua_glyph; + } + + engine->unlockFace(); + + // restore pixel unpack settings + glPixelStorei(GL_UNPACK_SWAP_BYTES, gl_swapbytes); + glPixelStorei(GL_UNPACK_LSB_FIRST, gl_lsbfirst); + glPixelStorei(GL_UNPACK_ROW_LENGTH, gl_rowlength); + glPixelStorei(GL_UNPACK_SKIP_ROWS, gl_skiprows); + glPixelStorei(GL_UNPACK_SKIP_PIXELS, gl_skippixels); + glPixelStorei(GL_UNPACK_ALIGNMENT, gl_alignment); +} +#endif + +#undef d +void QGLContext::generateFontDisplayLists(const QFont & fnt, int listBase) +{ + QFont f(fnt); + QFontEngine *engine = f.d->engineForScript(QUnicodeTables::Common); + + if (engine->type() == QFontEngine::Multi) + engine = static_cast<QFontEngineMulti *>(engine)->engine(0); +#ifndef QT_NO_FONTCONFIG + if(engine->type() == QFontEngine::Freetype) { + qgl_use_font(static_cast<QFontEngineFT *>(engine), 0, 256, listBase); + return; + } +#endif + // glXUseXFont() only works with XLFD font structures and a few GL + // drivers crash if 0 is passed as the font handle + f.setStyleStrategy(QFont::OpenGLCompatible); + if (f.handle() && engine->type() == QFontEngine::XLFD) + glXUseXFont(static_cast<Font>(f.handle()), 0, 256, listBase); +} + +void *QGLContext::getProcAddress(const QString &proc) const +{ + typedef void *(*qt_glXGetProcAddressARB)(const GLubyte *); + static qt_glXGetProcAddressARB glXGetProcAddressARB = 0; + static bool resolved = false; + + if (resolved && !glXGetProcAddressARB) + return 0; + if (!glXGetProcAddressARB) { + QString glxExt = QString(QLatin1String(glXGetClientString(QX11Info::display(), GLX_EXTENSIONS))); + if (glxExt.contains(QLatin1String("GLX_ARB_get_proc_address"))) { +#if defined(Q_OS_LINUX) || defined(Q_OS_BSD4) + void *handle = dlopen(NULL, RTLD_LAZY); + if (handle) { + glXGetProcAddressARB = (qt_glXGetProcAddressARB) dlsym(handle, "glXGetProcAddressARB"); + dlclose(handle); + } + if (!glXGetProcAddressARB) +#endif + { + extern const QString qt_gl_library_name(); + QLibrary lib(qt_gl_library_name()); + glXGetProcAddressARB = (qt_glXGetProcAddressARB) lib.resolve("glXGetProcAddressARB"); + } + } + resolved = true; + } + if (!glXGetProcAddressARB) + return 0; + return glXGetProcAddressARB(reinterpret_cast<const GLubyte *>(proc.toLatin1().data())); +} + +/***************************************************************************** + QGLOverlayWidget (Internal overlay class for X11) + *****************************************************************************/ + +class QGLOverlayWidget : public QGLWidget +{ + Q_OBJECT +public: + QGLOverlayWidget(const QGLFormat& format, QGLWidget* parent, const QGLWidget* shareWidget=0); + +protected: + void initializeGL(); + void paintGL(); + void resizeGL(int w, int h); + bool x11Event(XEvent *e) { return realWidget->x11Event(e); } + +private: + QGLWidget* realWidget; + +private: + Q_DISABLE_COPY(QGLOverlayWidget) +}; + + +QGLOverlayWidget::QGLOverlayWidget(const QGLFormat& format, QGLWidget* parent, + const QGLWidget* shareWidget) + : QGLWidget(format, parent, shareWidget ? shareWidget->d_func()->olw : 0) +{ + setAttribute(Qt::WA_X11OpenGLOverlay); + realWidget = parent; +} + + + +void QGLOverlayWidget::initializeGL() +{ + QColor transparentColor = context()->overlayTransparentColor(); + if (transparentColor.isValid()) + qglClearColor(transparentColor); + else + qWarning("QGLOverlayWidget::initializeGL(): Could not get transparent color"); + realWidget->initializeOverlayGL(); +} + + +void QGLOverlayWidget::resizeGL(int w, int h) +{ + glViewport(0, 0, w, h); + realWidget->resizeOverlayGL(w, h); +} + + +void QGLOverlayWidget::paintGL() +{ + realWidget->paintOverlayGL(); +} + +#undef Bool +QT_BEGIN_INCLUDE_NAMESPACE +#include "qgl_x11.moc" +QT_END_INCLUDE_NAMESPACE + +/***************************************************************************** + QGLWidget UNIX/GLX-specific code + *****************************************************************************/ +void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget *shareWidget) +{ + Q_Q(QGLWidget); + initContext(context, shareWidget); + olw = 0; + + if (q->isValid() && context->format().hasOverlay()) { + QString olwName = q->objectName(); + olwName += QLatin1String("-QGL_internal_overlay_widget"); + olw = new QGLOverlayWidget(QGLFormat::defaultOverlayFormat(), q, shareWidget); + olw->setObjectName(olwName); + if (olw->isValid()) { + olw->setAutoBufferSwap(false); + olw->setFocusProxy(q); + } + else { + delete olw; + olw = 0; + glcx->d_func()->glFormat.setOverlay(false); + } + } +} + +bool QGLWidgetPrivate::renderCxPm(QPixmap* pm) +{ + Q_Q(QGLWidget); + if (((XVisualInfo*)glcx->d_func()->vi)->depth != pm->depth()) + return false; + + GLXPixmap glPm; +#if defined(GLX_MESA_pixmap_colormap) && defined(QGL_USE_MESA_EXT) + glPm = glXCreateGLXPixmapMESA(X11->display, + (XVisualInfo*)glcx->vi, + (Pixmap)pm->handle(), + qt_gl_choose_cmap(pm->X11->display, + (XVisualInfo*)glcx->vi)); +#else + glPm = (quint32)glXCreateGLXPixmap(X11->display, + (XVisualInfo*)glcx->d_func()->vi, + (Pixmap)pm->handle()); +#endif + + if (!glXMakeCurrent(X11->display, glPm, (GLXContext)glcx->d_func()->cx)) { + glXDestroyGLXPixmap(X11->display, glPm); + return false; + } + + glDrawBuffer(GL_FRONT); + if (!glcx->initialized()) + q->glInit(); + q->resizeGL(pm->width(), pm->height()); + q->paintGL(); + glFlush(); + q->makeCurrent(); + glXDestroyGLXPixmap(X11->display, glPm); + q->resizeGL(q->width(), q->height()); + return true; +} + +/*! \internal + Free up any allocated colormaps. This fn is only called for + top-level widgets. +*/ +void QGLWidgetPrivate::cleanupColormaps() +{ + if (!cmap.handle()) { + return; + } else { + XFreeColormap(X11->display, (Colormap) cmap.handle()); + cmap.setHandle(0); + } +} + +void QGLWidget::setMouseTracking(bool enable) +{ + Q_D(QGLWidget); + if (d->olw) + d->olw->setMouseTracking(enable); + QWidget::setMouseTracking(enable); +} + + +void QGLWidget::resizeEvent(QResizeEvent *) +{ + Q_D(QGLWidget); + if (!isValid()) + return; + makeCurrent(); + if (!d->glcx->initialized()) + glInit(); + glXWaitX(); + resizeGL(width(), height()); + if (d->olw) + d->olw->setGeometry(rect()); +} + +const QGLContext* QGLWidget::overlayContext() const +{ + Q_D(const QGLWidget); + if (d->olw) + return d->olw->context(); + else + return 0; +} + + +void QGLWidget::makeOverlayCurrent() +{ + Q_D(QGLWidget); + if (d->olw) + d->olw->makeCurrent(); +} + + +void QGLWidget::updateOverlayGL() +{ + Q_D(QGLWidget); + if (d->olw) + d->olw->updateGL(); +} + +/*! + \internal + + Sets a new QGLContext, \a context, for this QGLWidget, using the + shared context, \a shareContext. If \a deleteOldContext is true, + the original context is deleted; otherwise it is overridden. +*/ +void QGLWidget::setContext(QGLContext *context, + const QGLContext* shareContext, + bool deleteOldContext) +{ + Q_D(QGLWidget); + if (context == 0) { + qWarning("QGLWidget::setContext: Cannot set null context"); + return; + } + if (!context->deviceIsPixmap() && context->device() != this) { + qWarning("QGLWidget::setContext: Context must refer to this widget"); + return; + } + + if (d->glcx) + d->glcx->doneCurrent(); + QGLContext* oldcx = d->glcx; + d->glcx = context; + + + if (parentWidget()) { + // force creation of delay-created widgets + parentWidget()->winId(); + if (parentWidget()->x11Info().screen() != x11Info().screen()) + d_func()->xinfo = parentWidget()->d_func()->xinfo; + } + + bool createFailed = false; + if (!d->glcx->isValid()) { + if (!d->glcx->create(shareContext ? shareContext : oldcx)) + createFailed = true; + } + if (createFailed) { + if (deleteOldContext) + delete oldcx; + return; + } + + if (d->glcx->windowCreated() || d->glcx->deviceIsPixmap()) { + if (deleteOldContext) + delete oldcx; + return; + } + + bool visible = isVisible(); + if (visible) + hide(); + + XVisualInfo *vi = (XVisualInfo*)d->glcx->d_func()->vi; + XSetWindowAttributes a; + + QColormap colmap = QColormap::instance(vi->screen); + a.colormap = qt_gl_choose_cmap(QX11Info::display(), vi); // find best colormap + a.background_pixel = colmap.pixel(palette().color(backgroundRole())); + a.border_pixel = colmap.pixel(Qt::black); + Window p = RootWindow(X11->display, vi->screen); + if (parentWidget()) + p = parentWidget()->winId(); + + Window w = XCreateWindow(X11->display, p, x(), y(), width(), height(), + 0, vi->depth, InputOutput, vi->visual, + CWBackPixel|CWBorderPixel|CWColormap, &a); + Window *cmw; + Window *cmwret; + int count; + if (XGetWMColormapWindows(X11->display, window()->winId(), + &cmwret, &count)) { + cmw = new Window[count+1]; + memcpy((char *)cmw, (char *)cmwret, sizeof(Window)*count); + XFree((char *)cmwret); + int i; + for (i=0; i<count; i++) { + if (cmw[i] == winId()) { // replace old window + cmw[i] = w; + break; + } + } + if (i >= count) // append new window + cmw[count++] = w; + } else { + count = 1; + cmw = new Window[count]; + cmw[0] = w; + } + +#if defined(GLX_MESA_release_buffers) && defined(QGL_USE_MESA_EXT) + if (oldcx && oldcx->windowCreated()) + glXReleaseBuffersMESA(X11->display, winId()); +#endif + if (deleteOldContext) + delete oldcx; + oldcx = 0; + + if (testAttribute(Qt::WA_WState_Created)) + create(w); + else + d->createWinId(w); + XSetWMColormapWindows(X11->display, window()->winId(), cmw, count); + delete [] cmw; + + // calling QWidget::create() will always result in a new paint + // engine being created - get rid of it and replace it with our + // own + + if (visible) + show(); + XFlush(X11->display); + d->glcx->setWindowCreated(true); +} + +const QGLColormap & QGLWidget::colormap() const +{ + Q_D(const QGLWidget); + return d->cmap; +} + +/*\internal + Store color values in the given colormap. +*/ +static void qStoreColors(QWidget * tlw, Colormap cmap, + const QGLColormap & cols) +{ + Q_UNUSED(tlw); + XColor c; + QRgb color; + + for (int i = 0; i < cols.size(); i++) { + color = cols.entryRgb(i); + c.pixel = i; + c.red = (ushort)((qRed(color) / 255.0) * 65535.0 + 0.5); + c.green = (ushort)((qGreen(color) / 255.0) * 65535.0 + 0.5); + c.blue = (ushort)((qBlue(color) / 255.0) * 65535.0 + 0.5); + c.flags = DoRed | DoGreen | DoBlue; + XStoreColor(X11->display, cmap, &c); + } +} + +/*\internal + Check whether the given visual supports dynamic colormaps or not. +*/ +static bool qCanAllocColors(QWidget * w) +{ + bool validVisual = false; + int numVisuals; + long mask; + XVisualInfo templ; + XVisualInfo * visuals; + VisualID id = XVisualIDFromVisual((Visual *) w->window()->x11Info().visual()); + + mask = VisualScreenMask; + templ.screen = w->x11Info().screen(); + visuals = XGetVisualInfo(X11->display, mask, &templ, &numVisuals); + + for (int i = 0; i < numVisuals; i++) { + if (visuals[i].visualid == id) { + switch (visuals[i].c_class) { + case TrueColor: + case StaticColor: + case StaticGray: + case XGrayScale: + validVisual = false; + break; + case DirectColor: + case PseudoColor: + validVisual = true; + break; + } + break; + } + } + XFree(visuals); + + if (!validVisual) + return false; + return true; +} + + +void QGLWidget::setColormap(const QGLColormap & c) +{ + Q_D(QGLWidget); + QWidget * tlw = window(); // must return a valid widget + + d->cmap = c; + if (!d->cmap.handle()) + return; + + if (!qCanAllocColors(this)) { + qWarning("QGLWidget::setColormap: Cannot create a read/write " + "colormap for this visual"); + return; + } + + // If the child GL widget is not of the same visual class as the + // toplevel widget we will get in trouble.. + Window wid = tlw->winId(); + Visual * vis = (Visual *) tlw->x11Info().visual();; + VisualID cvId = XVisualIDFromVisual((Visual *) x11Info().visual()); + VisualID tvId = XVisualIDFromVisual((Visual *) tlw->x11Info().visual()); + if (cvId != tvId) { + wid = winId(); + vis = (Visual *) x11Info().visual(); + } + + if (!d->cmap.handle()) // allocate a cmap if necessary + d->cmap.setHandle(XCreateColormap(X11->display, wid, vis, AllocAll)); + + qStoreColors(this, (Colormap) d->cmap.handle(), c); + XSetWindowColormap(X11->display, wid, (Colormap) d->cmap.handle()); + + // tell the wm that this window has a special colormap + Window * cmw; + Window * cmwret; + int count; + if (XGetWMColormapWindows(X11->display, tlw->winId(), &cmwret, &count)) + { + cmw = new Window[count+1]; + memcpy((char *) cmw, (char *) cmwret, sizeof(Window) * count); + XFree((char *) cmwret); + int i; + for (i = 0; i < count; i++) { + if (cmw[i] == winId()) { + break; + } + } + if (i >= count) // append new window only if not in the list + cmw[count++] = winId(); + } else { + count = 1; + cmw = new Window[count]; + cmw[0] = winId(); + } + XSetWMColormapWindows(X11->display, tlw->winId(), cmw, count); + delete [] cmw; +} + +void QGLExtensions::init() +{ + static bool init_done = false; + + if (init_done) + return; + init_done = true; + + QGLWidget dmy; + dmy.makeCurrent(); + init_extensions(); + + // nvidia 9x.xx unix drivers contain a bug which requires us to call glFinish before releasing an fbo + // to avoid painting artifacts + const QByteArray versionString(reinterpret_cast<const char*>(glGetString(GL_VERSION))); + const int pos = versionString.indexOf("NVIDIA"); + if (pos >= 0) { + const float nvidiaDriverVersion = versionString.mid(pos + strlen("NVIDIA")).toFloat(); + nvidiaFboNeedsFinish = nvidiaDriverVersion >= 90.0 && nvidiaDriverVersion < 100.0; + } +} + +QT_END_NAMESPACE |