On 2007-11-26 20:58-0000 Andrew Ross wrote: > > Hi Alan, > > My test results for pscairo. > > Ubuntu edgy > libpango1.0-dev 1.14.5-0ubuntu1 > libcairo2-dev 1.2.4-1ubuntu2 > Plots appear ok, but the text is tiny to the point of being unreadable. > > Ubuntu gutsy (latest stable) > libpango1.0-dev 1.18.3-0ubuntu1 > libcairo2-dev 1.4.10-1ubuntu4 > A large number of the plots are "missing" parts of the image. Sounds > like the same issues you have with Debian testing - pretty much the same > version. > > Doesn't look terribly good.
Thanks for those test results. So here is the summary of our combined results so far for pscairo: pango 1.14.5 and libcairo 1.2.4 are fine except for tiny text (Andrew). pango 1.16.4 and libcairo 1.4.6 are fine (Alan/32). pango 1.18.3 and libcairo 1.4.10 have a major issue (large bits of the plot missing) for most of our examples (both Andrew and Alan/64) The /32 and /64 in the above summary table indicate whether the test was run on 32-bit or 64-bit hardware. Andrew, could you let us know which of your above results were 32-bit and which 64-bit? Since all other cairo-related drivers are working as well or better than before, one possibility is some regression in the PostScript back end for libcairo was introduced between libcairo 1.4.6 and 1.4.10. However, another possibility is that the PostScript back end or our pscairo device driver has a 64-bit issue. I am going to build pango 1.16.4 and libcairo 1.4.6 on my 64-bit machine to help figure out which hypothesis is correct. Hazen and Orion, could you let us know the quality of your pscairo results (and your library version numbers as well as whether your hardware is 32-bit or 64-bit) as soon as possible? The point is I want to assemble a comprehensive picture of the conditions when the error occurs and fix it if it is our fault (say a 64-bit error in our pscairo code) or present the case to the libcairo list if it is their fault. The reason why I feel a sense of urgency is PostScript is one of the more important scientific plotting formats. So we will want to advise our 5.8.0 users as quickly as possible about this issue and if we cannot fix it ourselves advise them at least how to work around it (e.g., by building the pango/cairo stack using pango/cairo library versions that work with our pscairo device). 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 __________________________ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
