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NERDVANA / OpenGL-Sandbox-0.120 / lib / OpenGL / Sandbox / ContextShim / GLX.pm 

            

              
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package OpenGL::Sandbox::ContextShim::GLX;
use strict;
use warnings;
use Carp;
use Scalar::Util 'weaken';
use OpenGL::Sandbox qw/ glGetString GL_VERSION /;
use X11::GLX::DWIM;
# ABSTRACT: Create OpenGL context with X11::GLX::DWIM
our $VERSION = '0.120'; # VERSION
our %instances;
sub new {
        my $class= shift;
        my %opts= ref $_[0] eq 'HASH'? %{$_[0]} : @_;
        my $visible= $opts{visible} // 1;
        my $glx= X11::GLX::DWIM->new();
        if ($opts{fullscreen}) {
                # TODO: X11::Xlib doesn't have access to the modern concept of screen yet, only the
                #  idea of a screen that covers all physical monitors.  Need to add support for that.
                my $screen= $glx->screen;
                $opts{width}= $screen->width;
                $opts{height}= $screen->height;
        }
        # Target is lazy.  Make sure GL context fully initialized before return.
        if ($visible) {
                $glx->target({ window => {
                        x => $opts{x} // 0,
                        y => $opts{y} // 0,
                        width => $opts{width} // 400,
                        height => $opts{height} // 400
                }});
        } else {
                $glx->target({ pixmap => {
                        width => $opts{width} // 256,
                        height => $opts{height} // 256
                }});
        }
        my $self= bless { glx => $glx }, $class;
        weaken($instances{$self}= $self);
        return $self;
}
END {
        delete $_->{glx} for values %instances;
}
sub glx { shift->{glx} }
sub context_info {
        my $self= shift;
        sprintf("X11::GLX::DWIM %s, target '%s', GLX Version %s, OpenGL version %s\n",
                $self->glx && $self->glx->VERSION, $self->glx && $self->glx->target,
                $self->glx && $self->glx->glx_version, glGetString(GL_VERSION));
}
sub swap_buffers {
        my $self= shift;
        $self->glx->swap_buffers if $self->glx;
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
OpenGL::Sandbox::ContextShim::GLX - Create OpenGL context with X11::GLX::DWIM
=head1 VERSION
version 0.120
=head1 DESCRIPTION
This class is loaded automatically if needed by L<OpenGL::Sandbox/make_context>.
It uses L<X11::GLX::DWIM> to create an OpenGL context.
=head1 ATTRIBUTES
=head2 glx
The L<X11::GLX::DWIM> object
=head1 METHODS
=head2 Standard ContextShim API:
=over 14
=item new
Accepting all the options of L<OpenGL::Sandbox/make_context>
=item context_info
=item swap_buffers
=back
=head1 AUTHOR
Michael Conrad <mike@nrdvana.net>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2019 by Michael Conrad.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut