[cairo] rsvg and cairo alpha puzzle
cworth at cworth.org
Fri Nov 30 10:24:52 PST 2007
On Fri, 30 Nov 2007 19:16:11 +0100, Bertram Felgenhauer wrote:
> That's my code. The thing that probably goes wrong is the fiddling
> with device offsets that is done in rsvg_handle_render_cairo_sub():
> Apparently with a push_group in effect changing the device offsets
> like this does not affect the rendering to the group.
Yeah. The whole device_offset thing is fairly messy. We invented it
for a very specific purpose for GTK+, and then we've started using it
here and there. You're using it here in librsvg and the cairo group
code also uses it---and apparently those two uses are conflicting.
Maybe the rule should be that if you didn't create the surface
yourself, you shouldn't be messing with the device offset.
> I'll work on a patch to fix this properly in rsvg, and hopefully
> have code to show by the end of the weekend.
That sounds great.
> Is there already a bug report about this?
There's what I posted to the librsvg mailing list, which should be a
fairly good bug report. But I don't know that anyone has shoved
anything into bugzilla yet.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 189 bytes
Desc: not available
Url : http://lists.cairographics.org/archives/cairo/attachments/20071130/717fdd28/attachment-0001.pgp
More information about the cairo