[Xr] Few fundamental questions
cworth at east.isi.edu
Mon May 19 10:40:07 PDT 2003
On May 19, port001 wrote:
> GTK2 is a lot worse than Qt 2D performance wise, so this is why I
> am very interested in Xr.
So far, the emphasis in the development of Xr has been on the
high-level API and in the specification of some low-level primitives
along with reference software implementations.
Performance has not yet been an emphasis, so I won't make any
performance claims about Xr at this time.
However, Xr has been architected in a way to allow multiple backends,
any of which may be able to accelerate some operations with graphics
hardware. One such backend is already implemented using the X Render
Extension. It has also been proposed to make an Xr backend using
OpenGL. Volunteer help here would be most welcome.
> First of all, am I going to see a difference in applications that haven't
> been written using Xr?
Xr is a client-side library. If your applications don't link to it,
then you won't be using it.
> Will I see any speed improvements from GTK2 widgets?
> Or does GTK2 need to be modified to take advantage of Xr
> or does Xr add itself as a core layer to XFree eliminating the need
> for front-end modification software?
Thanks for your interest.
USC Information Sciences Institute cworth at isi.edu
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