On 30/12/2015 9:40 PM, David Winsemius wrote: [lots deleted]
So I guess the question is ... why is the build process for the Mavericks/Yosemite/El Capitan machines still failing to produce a current (working) version of rgl?
I think it does probably does produce a working version, but it fails the tests on that particular machine.
I believe the problem is that the CRAN test machine uses an unusual X server. I've asked for details on a couple of occasions so I could reproduce the error, but received no response. I don't know if the server is buggy or rgl just fails to do some checks that are unnecessary on other servers.
The latest error is occurring in rgl.pixels, and the underlying C++ code there is a little sloppy with type conversions (e.g. it assumes GL_FLOAT is float, which is not necessarily true), and is probably also sloppy with run-time checks. I don't think the type sloppiness could be a cause of the error (I think it would fail for all servers if so), and I can't spot the run-time sloppiness.
Duncan Murdoch _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
