On Fri, October 05, 2012 02:51:09 PM Samuel Rødal wrote: > On 10/05/2012 02:28 PM, Wehmer, Matthias wrote: > > Hi Samuel, > > > > I will try to make myself clearer, sorry for that unclear information. > > > > The shaders I’m talking about are those, that I implemented in my custom > > Qml plugin via the QSGSimpleMaterial class. There I have implemented two > > custom versions of the vertex and the fragment shader, whereby the later > > is just coloring the scene. OpenGL itself is involved in such a way as I > > use it to pass a texture to the fragment shader, but the geometry for > > example is created with the methods and objects given by Qt, i.e. I use > > a QSGGeometryNode and attach my geometry to it and simply draw a > > Line_Strip between them. > > > > The setAntialiasing() method I talk about is the one from the QQuickItem > > class. > > Yep, this was implemented recently and is a way to get antialiasing > without using multisample buffers (since those consume a lot of memory). > It does antialiasing in the fragment shader, by adding a set of > triangles around the shape (in the case of a Rectangle), and doing a > fade-out of the material around the edges. I believe it needs to be > implemented by each item / node somehow.
Hui! That's nice ... not a solution for the old FBO-AA-problem, but anyway: nice! :) > > > From my understanding this method should turn on some kind of > > > > postprocessing, that is antialise the scene after it is drawn by the > > SceneGraph. Obviously this doesn’t work for my custom widget, although > > all other items are antialiased. So either I understand this option and > > its consequences wrong or I need to implement some postprocessing on my > > own. For that I would need access to the scene (in form of a texture) > > after it has been drawn by the SceneGraph. Is there a possibility for > > that? Do you see my problem and what I understand wrong? I’m kinda > > struggling right now, because the whole rendering mechanism seems to be > > a black box for me. :D > > It is not a postprocessing feature. I'd suggest to have a look at how > the Rectangle element implements the antialiasing. > > Of course, you can also use multisampling by doing setSamples(4) or > similar on the QQuickView's surface format. > > -- > Samuel > _______________________________________________ > Development mailing list > [email protected] > http://lists.qt-project.org/mailman/listinfo/development _______________________________________________ Development mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/development
