On Sun, 16 Jun 2002, Yuri van Oers wrote:
>
> On Sat, 15 Jun 2002, Mark Vojkovich wrote:
>
> > On Sat, 15 Jun 2002, Yuri van Oers wrote:
> >
> > > There has to be some way of blitting a simple RGB image to a window,
> > > without the use of something like Qt or Gtk, hasn't there?
> > > (Main reason for not using Qt et al. is speed.)
> >
> > XShmPutImage. Or XPutImage if not local or shared memory is not
> > available. XShmPutImage can be considerably faster for local
> > connections.
>
> XShmPutImage and XPutImage should behave about the same, no?
> I've been messing with XPutImage, but for some reason I just can't get it
> to do what I want. My RGB image is turned into nonsense when
> XPutImage'ing.
XShmPutImage and XPutImage results are the same. The Shm version
is faster.
>
> What should I use; ZPixmap? In that case, what's the RGB format; ARGB or
> something else (I need RGB)?
>
ZPixmap. XImages aren't RGB per se, they are pixel data that
gets interpreted according to the visual. So if you're using them
with a Window that has a TrueColor visual you'll want them to
match the RGB masks for that visual. See the man page on XVisualInfo
for determining the RGB masks associated with a visual.
Mark.
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