diff options
Diffstat (limited to 'src/opengl/qgl.cpp')
| -rw-r--r-- | src/opengl/qgl.cpp | 352 |
1 files changed, 107 insertions, 245 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp index 087902b..799c749 100644 --- a/src/opengl/qgl.cpp +++ b/src/opengl/qgl.cpp @@ -1,6 +1,7 @@ /**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtOpenGL module of the Qt Toolkit. @@ -20,10 +21,9 @@ ** 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 1.1, included in the file LGPL_EXCEPTION.txt in this -** package. +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. @@ -141,6 +141,48 @@ QGLSignalProxy *QGLSignalProxy::instance() return theSignalProxy(); } + +class QGLEngineSelector +{ +public: + QGLEngineSelector() : engineType(QPaintEngine::MaxUser) { } + + void setPreferredPaintEngine(QPaintEngine::Type type) { + if (type == QPaintEngine::OpenGL || type == QPaintEngine::OpenGL2) + engineType = type; + } + + QPaintEngine::Type preferredPaintEngine() { + if (engineType == QPaintEngine::MaxUser) { + // No user-set engine - use the defaults +#if defined(QT_OPENGL_ES_2) + engineType = QPaintEngine::OpenGL2; +#else + // We can't do this in the constructor for this object because it + // needs to be called *before* the QApplication constructor + if ((QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_2_0) + && qgetenv("QT_GL_USE_OPENGL1ENGINE").isEmpty()) + engineType = QPaintEngine::OpenGL2; + else + engineType = QPaintEngine::OpenGL; +#endif + } + return engineType; + } + +private: + QPaintEngine::Type engineType; +}; + +Q_GLOBAL_STATIC(QGLEngineSelector, qgl_engine_selector) + + +bool qt_gl_preferGL2Engine() +{ + return qgl_engine_selector()->preferredPaintEngine() == QPaintEngine::OpenGL2; +} + + /*! \namespace QGL \inmodule QtOpenGL @@ -181,6 +223,32 @@ QGLSignalProxy *QGLSignalProxy::instance() \sa {Sample Buffers Example} */ +/*! + \fn void QGL::setPreferredPaintEngine(QPaintEngine::Type engineType) + + \since 4.6 + + Sets the preferred OpenGL paint engine that is used to draw onto + QGLWidgets, QGLPixelBuffers and QGLFrameBufferObjects with QPainter + in Qt. + + The \a engineType parameter specifies which of the GL engines to + use. Only \c QPaintEngine::OpenGL and \c QPaintEngine::OpenGL2 are + valid parameters to this function. All other values are ignored. + + By default, the \c QPaintEngine::OpenGL2 engine is used if GL/GLES + version 2.0 is available, otherwise \c QPaintEngine::OpenGL is + used. + + \warning This function must be called before the QApplication + constructor is called. +*/ +void QGL::setPreferredPaintEngine(QPaintEngine::Type engineType) +{ + qgl_engine_selector()->setPreferredPaintEngine(engineType); +} + + /***************************************************************************** QGLFormat implementation *****************************************************************************/ @@ -1292,6 +1360,9 @@ bool operator!=(const QGLFormat& a, const QGLFormat& b) *****************************************************************************/ QGLContextPrivate::~QGLContextPrivate() { + if (!reference->deref()) + delete reference; + if (!group->m_refs.deref()) { Q_ASSERT(group->context() == q_ptr); delete group; @@ -1331,7 +1402,6 @@ void QGLContextPrivate::init(QPaintDevice *dev, const QGLFormat &format) crWin = false; initDone = false; sharing = false; - clear_on_painter_begin = true; max_texture_size = -1; version_flags_cached = false; version_flags = QGLFormat::OpenGL_Version_None; @@ -4186,7 +4256,7 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font, } else { setAutoBufferSwap(false); // disable glClear() as a result of QPainter::begin() - d->glcx->d_func()->clear_on_painter_begin = false; + d->disable_clear_on_painter_begin = true; if (engine->type() == QPaintEngine::OpenGL2) { qt_save_gl_state(); #ifndef QT_OPENGL_ES_2 @@ -4216,7 +4286,7 @@ void QGLWidget::renderText(int x, int y, const QString &str, const QFont &font, p->end(); delete p; setAutoBufferSwap(auto_swap); - d->glcx->d_func()->clear_on_painter_begin = true; + d->disable_clear_on_painter_begin = false; if (engine->type() == QPaintEngine::OpenGL2) qt_restore_gl_state(); } @@ -4359,7 +4429,7 @@ void QGLWidget::renderText(double x, double y, double z, const QString &str, con } else { setAutoBufferSwap(false); // disable glClear() as a result of QPainter::begin() - d->glcx->d_func()->clear_on_painter_begin = false; + d->disable_clear_on_painter_begin = true; if (engine->type() == QPaintEngine::OpenGL2) qt_save_gl_state(); p = new QPainter(this); @@ -4399,7 +4469,7 @@ void QGLWidget::renderText(double x, double y, double z, const QString &str, con if (engine->type() == QPaintEngine::OpenGL2) qt_restore_gl_state(); setAutoBufferSwap(auto_swap); - d->glcx->d_func()->clear_on_painter_begin = true; + d->disable_clear_on_painter_begin = false; } #ifndef QT_OPENGL_ES if (engine->type() == QPaintEngine::OpenGL2) @@ -4747,6 +4817,8 @@ void QGLWidgetPrivate::initContext(QGLContext *context, const QGLWidget* shareWi { Q_Q(QGLWidget); + glDevice.setWidget(q); + QGLExtensions::init(); glcx = 0; autoSwap = true; @@ -4782,242 +4854,6 @@ Q_OPENGL_EXPORT const QString qt_gl_library_name() } #endif -void QGLDrawable::setDevice(QPaintDevice *pdev) -{ - wasBound = false; - widget = 0; - buffer = 0; - fbo = 0; -#ifdef Q_WS_QWS - wsurf = 0; -#endif - -#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - if (pdev->devType() == QInternal::Pixmap) { - QPixmapData *data = static_cast<QPixmap *>(pdev)->pixmapData(); - Q_ASSERT(data->classId() == QPixmapData::OpenGLClass); - pixmapData = static_cast<QGLPixmapData *>(data); - - fbo = pixmapData->fbo(); - } -#else - Q_ASSERT(pdev->devType() != QInternal::Pixmap); -#endif - - if (pdev->devType() == QInternal::Widget) - widget = static_cast<QGLWidget *>(pdev); - else if (pdev->devType() == QInternal::Pbuffer) - buffer = static_cast<QGLPixelBuffer *>(pdev); - else if (pdev->devType() == QInternal::FramebufferObject) - fbo = static_cast<QGLFramebufferObject *>(pdev); -#ifdef Q_WS_QWS - else if (pdev->devType() == QInternal::UnknownDevice) - wsurf = static_cast<QWSGLPaintDevice*>(pdev)->windowSurface(); -#elif !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - else if (pdev->devType() == QInternal::UnknownDevice) - wsurf = static_cast<QGLWindowSurface *>(pdev); -#endif -} - -void QGLDrawable::swapBuffers() -{ - if (widget) { - if (widget->autoBufferSwap()) - widget->swapBuffers(); -#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - } else if (pixmapData) { - pixmapData->swapBuffers(); -#endif - } else { - glFlush(); - } -} - -void QGLDrawable::makeCurrent() -{ - previous_fbo = 0; -#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - if (!pixmapData && !fbo) { -#else - if (!fbo) { -#endif - QGLContext *ctx = context(); - previous_fbo = ctx->d_ptr->current_fbo; - ctx->d_ptr->current_fbo = 0; - if (previous_fbo) - glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0); - } - - if (widget) - widget->makeCurrent(); -#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - else if (pixmapData) - pixmapData->makeCurrent(); -#endif - else if (buffer) - buffer->makeCurrent(); -#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)) - else if (wsurf) - wsurf->context()->makeCurrent(); -#endif - else if (fbo) { - wasBound = fbo->isBound(); - if (!wasBound) - fbo->bind(); - } -} - -#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) -QGLPixmapData *QGLDrawable::copyOnBegin() const -{ - if (!pixmapData || pixmapData->isUninitialized()) - return 0; - return pixmapData; -} -#endif - -void QGLDrawable::doneCurrent() -{ -#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - if (pixmapData) { - pixmapData->doneCurrent(); - return; - } -#endif - - if (previous_fbo) { - QGLContext *ctx = context(); - ctx->d_ptr->current_fbo = previous_fbo; - glBindFramebuffer(GL_FRAMEBUFFER_EXT, previous_fbo); - } - - if (fbo && !wasBound) - fbo->release(); -} - -QSize QGLDrawable::size() const -{ - if (widget) { - return QSize(widget->d_func()->glcx->device()->width(), - widget->d_func()->glcx->device()->height()); -#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - } else if (pixmapData) { - return pixmapData->size(); -#endif - } else if (buffer) { - return buffer->size(); - } else if (fbo) { - return fbo->size(); - } -#ifdef Q_WS_QWS - else if (wsurf) - return wsurf->window()->frameSize(); -#elif !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - else if (wsurf) - return QSize(wsurf->width(), wsurf->height()); -#endif - return QSize(); -} - -QGLFormat QGLDrawable::format() const -{ - if (widget) - return widget->format(); - else if (buffer) - return buffer->format(); -#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)) - else if (wsurf) - return wsurf->context()->format(); -#endif - else if (fbo && QGLContext::currentContext()) { - QGLFormat fmt = QGLContext::currentContext()->format(); - fmt.setStencil(fbo->attachment() == QGLFramebufferObject::CombinedDepthStencil); - fmt.setDepth(fbo->attachment() != QGLFramebufferObject::NoAttachment); - return fmt; - } - - return QGLFormat(); -} - -GLuint QGLDrawable::bindTexture(const QImage &image, GLenum target, GLint format, - QGLContext::BindOptions options) -{ - QGLTexture *texture = 0; - options |= QGLContext::MemoryManagedBindOption; - if (widget) - texture = widget->d_func()->glcx->d_func()->bindTexture(image, target, format, options); - else if (buffer) - texture = buffer->d_func()->qctx->d_func()->bindTexture(image, target, format, options); - else if (fbo && QGLContext::currentContext()) - texture = const_cast<QGLContext *>(QGLContext::currentContext())->d_func()->bindTexture(image, target, format, options); -#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)) - else if (wsurf) - texture = wsurf->context()->d_func()->bindTexture(image, target, format, options); -#endif - return texture->id; -} - -GLuint QGLDrawable::bindTexture(const QPixmap &pixmap, GLenum target, GLint format, - QGLContext::BindOptions options) -{ - QGLTexture *texture = 0; - if (widget) - texture = widget->d_func()->glcx->d_func()->bindTexture(pixmap, target, format, options); - else if (buffer) - texture = buffer->d_func()->qctx->d_func()->bindTexture(pixmap, target, format, options); - else if (fbo && QGLContext::currentContext()) - texture = const_cast<QGLContext *>(QGLContext::currentContext())->d_func()->bindTexture(pixmap, target, format, options); -#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)) - else if (wsurf) - texture = wsurf->context()->d_func()->bindTexture(pixmap, target, format, options); -#endif - return texture->id; -} - -QColor QGLDrawable::backgroundColor() const -{ - if (widget) - return widget->palette().brush(widget->backgroundRole()).color(); -#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - else if (pixmapData) - return pixmapData->fillColor(); -#endif - return QApplication::palette().brush(QPalette::Background).color(); -} - -bool QGLDrawable::hasTransparentBackground() const -{ - return widget && widget->testAttribute(Qt::WA_TranslucentBackground); -} - -QGLContext *QGLDrawable::context() const -{ - if (widget) - return widget->d_func()->glcx; - else if (buffer) - return buffer->d_func()->qctx; - else if (fbo) - return const_cast<QGLContext *>(QGLContext::currentContext()); -#if defined(Q_WS_QWS) || (!defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL)) - else if (wsurf) - return wsurf->context(); -#endif - return 0; -} - -bool QGLDrawable::autoFillBackground() const -{ - if (widget) - return widget->autoFillBackground(); -#if !defined(QT_OPENGL_ES_1) && !defined(QT_OPENGL_ES_1_CL) - else if (pixmapData) - return pixmapData->needsFill(); -#endif - else - return false; -} - - bool QGLShareRegister::checkSharing(const QGLContext *context1, const QGLContext *context2) { bool sharing = (context1 && context2 && context1->d_ptr->group == context2->d_ptr->group); return sharing; @@ -5174,4 +5010,30 @@ void QGLContextResource::removeOne(const QGLContext *key) m_resources.erase(it); } +QGLContextReference::QGLContextReference(const QGLContext *ctx) + : m_ref(1), m_ctx(ctx) +{ + connect(QGLSignalProxy::instance(), + SIGNAL(aboutToDestroyContext(const QGLContext *)), + this, SLOT(aboutToDestroyContext(const QGLContext *))); +} + +void QGLContextReference::aboutToDestroyContext(const QGLContext *ctx) +{ + // Bail out if our context is not being destroyed. + if (ctx != m_ctx || !m_ctx) + return; + + // Find some other context that this one is shared with to take over. + QList<const QGLContext *> shares = qgl_share_reg()->shares(m_ctx); + shares.removeAll(m_ctx); + if (!shares.isEmpty()) { + m_ctx = shares[0]; + return; + } + + // No more contexts sharing with this one, so the reference is now invalid. + m_ctx = 0; +} + QT_END_NAMESPACE |