On Fri, 2007-11-30 at 12:49 +0000, Kai-Martin Knaak wrote: > 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.
Current versions don't use cairo. -- Peter Clifton Electrical Engineering Division, Engineering Department, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA Tel: +44 (0)7729 980173 - (No signal in the lab!) _______________________________________________ geda-dev mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-dev
