SUCCESS -- I HAVE STUMBLED ONTO BLACK MAGIC!!! Here's the basics... 
use Inline C => DATA => LIBS => "-lblah...";

perl_calling_c();

sub c_calling_perl() {
   print "transcendance\n";
}

__DATA__

void perl_calling_c() {
   call_pv('c_calling_perl',G_DISCARD|G_NOARGS);
}

[download]

Believe it or not, this works! Awesome! And I have no idea how this ever worked, or what evils it does, but yeeha, I have solved my problem of OpenGL callbacks.

For those OpenGL folks, consider "perl_calling_c" as a "GlutMainLoop" and "c_calling_perl" as one of the functions such as a registered "glutDisplayFunc", which will later hand back down crossing the boundary one or more times in an attempt to blow everyone's minds away.

It's going to take me a few days before I get "spinning cube" up and running with this wild method, but I will certaintly post the Code when I have it.

So far, it's looking a little slow, with a call down and back up (of trivial nature) taking 0.08 real seconds on my 2.4GHz laptop. Printing directly takes 0.003 -- or roughly 25 times slower. I bet, though, for what I want to do this will be good enough.

In reply to Re: Inline::C *back* into Perl by flyingmoose
in thread Inline::C *back* into Perl by flyingmoose

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