Re: Slow image display over network

[Lars Magne Ingebrigtsen <larsi@gnus.org>]

Daniel Pittman <daniel@rimspace.net> writes:

> Aw, heck.  I saved you the time: PNG loading does create the X image and
> pixmap during the load process, confirming my guesswork.  I didn't check the
> other image loaders, but they would sensibly behave the same way, showing the
> same result.

Right.  Image load pushes the image over X, even though we're not
actually going to display it?

That means that the way Gnus displays images is as pessimal as
possible.  When reading a HTML message with images, Gnus calls
(image-size (create-image ...)) to find out the size, and then if it's
too big, it rescales the image down.  And this means that the huge image
has to be transferred first over the slow X connection, and then
rescaled, and then probably transferred again?

Is this really necessary?  :-)  Why can't image transfer to the X server
wait until the `put-image' call?

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen