main.cpp 范例文件

scenegraph/textureinthread/main.cpp
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#include <QtCore/QThread> #include <QGuiApplication> #include <QtGui/private/qguiapplication_p.h> #include <QtGui/qpa/qplatformintegration.h> #include <QtQuick/QQuickView> #include "threadrenderer.h" int main(int argc, char **argv) { QGuiApplication app(argc, argv); if (!QGuiApplicationPrivate::platform_integration->hasCapability(QPlatformIntegration::ThreadedOpenGL)) { QQuickView view; view.setSource(QUrl("qrc:///scenegraph/textureinthread/error.qml")); view.show(); return app.exec(); } qmlRegisterType<ThreadRenderer>("SceneGraphRendering", 1, 0, "Renderer"); int execReturn = 0; { QQuickView view; // Rendering in a thread introduces a slightly more complicated cleanup // so we ensure that no cleanup of graphics resources happen until the // application is shutting down. view.setPersistentOpenGLContext(true); view.setPersistentSceneGraph(true); view.setResizeMode(QQuickView::SizeRootObjectToView); view.setSource(QUrl("qrc:///scenegraph/textureinthread/main.qml")); view.show(); execReturn = app.exec(); } // As the render threads make use of our QGuiApplication object // to clean up gracefully, wait for them to finish before // QGuiApp is taken off the heap. for (QThread *t : qAsConst(ThreadRenderer::threads)) { t->wait(); delete t; } return execReturn; }