#include <QtGui/QGuiApplication>
#include <QtGui/QImage>
#include <QtDeclarative/QtDeclarative>
#include <QtQuick/QtQuick>

int main(int argc, char *argv[])
{
    QGuiApplication a(argc, argv);

    QImage logo;
    if (!logo.load("logo.png")) {
        qFatal("Unable to load logo.png.");
    }

    QQuickView *view = new QQuickView();
    view->show();

    view->setClearBeforeRendering(false);
    view->setResizeMode(QQuickView::SizeRootObjectToView);
    view->setSource(QUrl("Test.qml"));

    QObject::connect(view, &QQuickView::beforeRendering, [=]() {

            QOpenGLContext *ctx = QOpenGLContext::currentContext();
            ctx->functions()->glUseProgram(0);

            glClearColor(1, 0, 0, 1);
            glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

            glDisable(GL_DEPTH_TEST);
            glDisable(GL_LIGHTING);
            glEnable(GL_TEXTURE_2D);

            glMatrixMode(GL_PROJECTION);
            glPushMatrix();
            glLoadIdentity();
            glMatrixMode(GL_MODELVIEW);
            glPushMatrix();
            glLoadIdentity();

            QSGTexture *tex = view->createTextureFromImage(logo);
            tex->bind();
            glBegin(GL_QUADS);
            glTexCoord2i(0, 0);
            glVertex2i(-1, 1);
            glTexCoord2i(0, 1);
            glVertex2i(-1, -1);
            glTexCoord2i(1, 1);
            glVertex2i(1, -1);
            glTexCoord2i(1, 0);
            glVertex2i(1, 1);
            glEnd();

            glMatrixMode(GL_PROJECTION);
            glPopMatrix();
            glMatrixMode(GL_MODELVIEW);
            glPopMatrix();
    });

    return a.exec();
}