A couple other thoughts.
1) JavaFX doesn't use software loops for the actual rendering as long as
the card is capable of supporting Prism. We do mix HW and SW in that we
generate masks from a path in SW, but we cache that on the card and
render it using shaders.
2) JavaFX can support Intel HD on Windows (something in the way Java2D
uses D3D exposes a bug in Intel's driver so it is disabled).
Jim can probably come up with more.
-- Kevin
Stephen F Northover wrote:
Hi Ryan,
I'll let others describe hardware acceleration in AWT/Swing but in
JavaFX, D3D and ES2 shaders are used to draw. These run directly on
the graphics card and render data that is downloaded there. Because
JavaFX has a scene graph, it has a notion of what has been changed and
can render only a subset of the scene graph nodes.
This is a very high level description of JavaFX but captures the
essence of what is happening. Any other FX committers want to comment?
Steve
On 2014-01-01 1:39 PM, Ryan Cuprak wrote:
What is the difference between hardware acceleration in JavaFX
versus Swing/AWT? I heard a while back someone claim that Swing/AWT
could never fully leverage hardware acceleration. However there are
the usual mix of -D parameters (sun.java2.opengl/sun.java2d.d3d,
etc.) for Swing/AWT. So I am just wondering how JavaFX’s acceleration
differs from the hardware acceleration in Swing. When I was giving a
talk at a JUG meeting someone called me out on the hardware
acceleration bit and I realized I didn’t fully understand the
differences between the two.
I understand that JavaFX has a scene graph and Swing doesn’t etc.
So I am assuming that the scene graph operations are optimized on the
GPU whereas if you were trying to replicate a scene graph in Swing
you would obviously be doing all the work on the CPU. So Swing’s
hardware acceleration is more about buffers?
I did come across this article:
https://weblogs.java.net/blog/opinali/archive/2010/05/03/first-long-look-javafx-13-and-prism
Specifically this line caught my attention "Prism finally renders
effects with full hardware acceleration and without the extra buffer
copies that spoil effects on the Swing toolkit.”
This article is a dated - brings up a second question about
hardware acceleration with a hybrid Swing/JavaFX application - what
happens?
Thanks,
-Ryan
