On 2010-03-13 13:16-0800 Alan W. Irwin wrote: > On 2010-03-13 14:45-0500 Hazen Babcock wrote: > >> Alan W. Irwin wrote: >>> 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". > > Hmm. after updating to get your fix and "make cairo" I still get the same > (bad) result (with page 1 still visible underneath) for > > examples/c/x02c -dev xcairo -bg 0000FF_0.1 > > examples/c/x02c -dev qtwidget -bg 0000FF_01 > > was fine. > > I haven't tried a completely clean build yet, but "make cairo" did create > a new cairo device driver so your fix should be properly built. [...]
Yep, same (bad) results for an absolutely clean build tree, and I double-checked the cairo.c code had your fix. In fact, no change in the results is expected as a result of your change since the default value of pls->dev_clear is zero in any case. Just in case, I also tried a direct (rather than X-terminal) display and continued to get the same bad xcairo and good qtwidget transparent background results. Do you currently get good results for the above test with -dev xcairo? Currently, there are problems with Hez's recent cairo change (see my next post) so that the cairo file devices all segfault. However, if I revert back to --revision 10861 for cairo.c, then the segfaults disappear and then pngcairo does not have this transparent background issue while xcairo still does. The conclusion from this test is the transparent background issue is likely due to some difference in treatment between the cairo file devices and xcairo, and whatever the xcairo issue, it is independent of Hez's recent changes. Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); PLplot scientific plotting software package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ ------------------------------------------------------------------------------ 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
