On Thu, Jan 19, 2012 at 8:33 AM, Chris Marshall <[email protected]>wrote:
> We already have a section in the Known_problems > about 16bit data and rpic/wpic. Since we have no > other reports from any linux systems for this problem, > my guess is that it may come from a build/config > problem for NetPBM in gentoo. > One of the key features of the Gentoo package system is that you can very easily customize your compiler flags. The Gentoo wiki covers this as a basic step in setting up your system. This makes it very easy to customize and optimize your entire system for your actual hardware. The downside is that there may be some compile flags in Ingo's setup which are leading to some weird corner cases that are not normally built with pnm. Maybe Ingo could update the gentoo bug ticket > with the facts we've discovered. I think the debugging > will involve creating known good 16bit intput and > output files and then tracking down the differences. > Eh, Ingo doesn't have a SF account, so I'll try to update the ticket. > For the PDL-2.4.10 release, I think we could just > add a button on our Get PDL section of the web > site for gentoo and put the OS specific note there. > ALL PDL FOLKS - anybody up for trying to add a Gentoo section to the PDL website? > --Chris > > On Thu, Jan 19, 2012 at 8:26 AM, David Mertens <[email protected]> > wrote: > > Should we add a tentative note to the docs? > > > > On Jan 19, 2012 6:10 AM, "chm" <[email protected]> wrote: > >> > >> On 1/19/2012 3:56 AM, Ingo Schmid wrote: > >>> > >>> you are right, pngtopnm has problems converting the created pngs. I > >>> don't know if wpci creates some sloppy png or the problem is with > >>> pngtopnm, since it can convert i.e. screenshots quite fine. But then > >>> they are created via intermediate pnms (or something) in the first > >>> place, no? > >> > >> > >> The issue is only with 16bit data and whether > >> that works with pnmtopng (and vice versa). As > >> long as you are only using the default 8bit > >> images, things should work ok. > >> > >> --Chris > >> > >>> On 01/18/2012 03:56 PM, chm wrote: > >>>> > >>>> The problem appears to be in the pnmtopng/pngtopnm > >>>> and possibly the initial creation of the input data > >>>> piped to those commands. I'll add this to the list > >>>> of known problems for the 2.4.10 release. Thanks > >>>> for reporting the problem. > >> > >> > >> > > > -- Sent via my carrier pigeon.
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