Alan W. Irwin wrote: > On 2010-03-10 00:43-0800 David MacMahon wrote: > >> I just ran this... >> >> x02c -dev xcairo -bg 0000ff_0.3 >> >> ...and noticed on the second plot I can "see through" to the first >> plot. I don't think I have any other non-cairo, alpha-capable >> drivers built so I can't tell if it's cairo-related or more general. > >> <12> svg Scalable Vector Graphics (SVG 1.1) >> >> Can someone with qt devices please try this? > > Good spotting. It's a rendering bug that appears to be specific > to -dev xcairo. > > -dev qtwidget does not have this problem, and neither does -dev svg. (For > the latter, you must use the familying option -fam which will generate two > files corresponding to the two pages.) > > An even more spectacular example of this xcairo bug is example 8. The first > four pages look okay (since they duplicate each other in most respects), but > then for pages 5 through 8, the page 4 plot gently fades away in the > background as more and more partially transparent layers are added on top of > it. > > Hazen, will you have a look at this issue, please? This transparent > background issue does not appear for, e.g., -dev pscairo so it appears this > issue may be specific within the cairo devices to just -dev xcairo although > I haven't checked the other cairo device possibilities beside pscairo.
Looks like it was an issue with the driver not using the "good PLplot core fallback clear capability". -Hazen ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
