On Fri, 30 Nov 2007 01:56:44 +0000, Peter Clifton wrote: > Cairo has opacity built in, so no need for XRender calls. ARGB, where A > is opacity. You may / may not need to set the surface up for it. > > As suggested for PCB, drawing layers to spearate off-screen surfaces > (from cairo_surface_create_similar()), then compositing layer by layer > onto the main drawable might be the way forward.
Has anyone checked how inkscape does transparency? This app seems to cope with thousands strokes and polygons without crippling delay. ---<(kaimartin)>--- -- Kai-Martin Knaak tel: +49-511-762-2895 Universität Hannover, Inst. für Quantenoptik fax: +49-511-762-2211 Welfengarten 1, 30167 Hannover http://www.iqo.uni-hannover.de GPG key: http://pgp.mit.edu:11371/pks/lookup?search=Knaak+kmk&op=get _______________________________________________ geda-dev mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-dev
