Replacement for QSGSimpleTextureNode

Magnus21

I need to render images in OpenGL, so I found QSGSimpleTextureNode.
But it says there, that this class is obsolete and should not be used. What is the replacement for this class?
I found QSGImageNode, which looks very similar, but this is only an abstract class, where nothing at all seems to be implemented. So what should I use instead of QSGSimpleTextureNode?

SGaist

Hi,

AFAIK, it's the correct class, you have to do a bit more work though.

Magnus21

Btw, just in case someone else was looking for a solution to the same problem:
I did not want to reimplement everything, so I just create a texture from QQuickView::createTextureFromImage which unfortunately requires an instance, so I just created a dummy instance to create textures. Finally I create 4 texture coordinates to let the texture be displayed:

    gnode = new QSGGeometryNode;
    geometry = new QSGGeometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 0);
    geometry->setDrawingMode(GL_TRIANGLE_STRIP);
    gnode->setGeometry(geometry);
    gnode->setFlag(QSGNode::OwnsGeometry);
    material = new QSGTextureMaterial();
    QImage img = QImage(2*SIZE, 2*SIZE, QImage::Format_RGB16);
    img.fill(color); // icon background color
    QSvgRenderer renderer(iconPath);
    QPainter painter(&img);
    renderer.render(&painter); // paint the icon on top of it
    material = new QSGTextureMaterial;
    texture = view->createTextureFromImage(img);
    texture->setMipmapFiltering(QSGTexture::Linear);
    texture->bind();
    material->setTexture(texture);
    gnode->setMaterial(material);
    gnode->setFlag(QSGNode::OwnsMaterial);
    geometry->allocate(4);
    vertices = geometry->vertexDataAsTexturedPoint2D();
    vertices[0].set(this->pos.x()-SIZE,this->pos.y()-SIZE,0,0);
    vertices[1].set(this->pos.x()+SIZE,this->pos.y()-SIZE,1,0);
    vertices[2].set(this->pos.x()-SIZE,this->pos.y()+SIZE,0,1);
    vertices[3].set(this->pos.x()+SIZE,this->pos.y()+SIZE,1,1);
    node->appendChildNode(gnode);

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