Hi, I think the best way to get started really depends on your personal preferences (e.g. do you like to read code, docs, diagrams,...). I can only comment on how I do it, but others may have other approaches:
First of all, you can run a simple JavaFX apps with lots of verbose info. See com.sun.prism.impl.PrismSettings for a list, and have at least prism.verbose set to true. This already gives you lots of insight in what is happening. Second, you want to know what happens on a pulse. Although many complex things are happening, this is not very hard to detect from the code: start from QuantumToolkit.pulse() and follow it from there. There are basically two main parts: * do the calculations (on the FX Thread) (e.g. look at Scene.ScenePulseListener.pulse()) * do the rendering (PaintCollector.renderAll() which will ultimately call QuantumRenderer.submitRenderJob() which runs on the Prism thread). - Johan On Tue, Mar 8, 2016 at 5:34 AM, Felix Bembrick <felix.bembr...@gmail.com> wrote: > +1 > > I too would love to dive as deep as possible and improve anything that > needs improving so some guidance would help greatly! > > Felix > > On 8 March 2016 at 14:45, Jeffrey Guenther <guenther.jeff...@gmail.com> > wrote: > > > Hi Devs, > > > > I’m interested in learning more about JavaFX’s low level graphics > > implementation. I’ve spent a couple afternoons source diving in the > > modules/graphics folder to get the lay of the land and now I think I need > > some help. Can anyone point me to documentation describing the system’s > > high level design? Let’s say one or two levels deeper than > > http://docs.oracle.com/javafx/2/architecture/jfxpub-architecture.htm? < > > http://docs.oracle.com/javafx/2/architecture/jfxpub-architecture.htm?> > > > > Ultimately, I’d like to gain a better understanding on how JavaFX lays > out > > and renders text for the purposes of understanding how I might be able to > > contribute to a more advanced text API with support for things like > kerning. > > > > Secondly, can anyone explain to me how shaders are compiled and passed > > down to the graphics layer? I’d like to gain a better understanding of > how > > a JavaFX programmer could leverage/add to Prism such that we can write > > custom shaders/GPU kernels for Effects nodes. > > > > I realize the graphics system in JavaFX is not for the faint of heart. > > There’s much going on beneath the surface. I’m willing to dive deep and > do > > the learning to understand the design. Can anyone point me to docs where > I > > can get started? Or maybe which class to start with and work out from > when > > I’m source diving? > > > > Jeff >
