—

              
package OpenGL::Sandbox::ContextShim::SDL;
use strict;
use warnings;
use Carp;
use Scalar::Util 'weaken';
use OpenGL::Sandbox qw/ glGetString GL_VERSION /;
use SDLx::App;
# ABSTRACT: Create OpenGL context with SDLx::App
our $VERSION = '0.120'; # VERSION
my %instances;
sub new {
        my $class= shift;
        my %opts= ref $_[0] eq 'HASH'? %{$_[0]} : @_;
        # TODO: Figure out best way to create invisible SDL window
        if (defined $opts{visible} && !$opts{visible}) {
                $opts{x}= -100;
                $opts{width}= $opts{height}= 1;
        }
        # This is the only option I know of for SDL to set initial window placement
        local $ENV{SDL_VIDEO_WINDOW_POS}= ($opts{x}//0).','.($opts{y}//0)
                if defined $opts{x} || defined $opts{y};
        my $flags= 0;
        $flags |= SDL::SDL_NOFRAME() if $opts{noframe};
        $flags |= SDL::SDL_FULLSCREEN() if $opts{fullscreen};
        my $sdl= SDLx::App->new(
                title  => $opts{title} // 'OpenGL',
                (defined $opts{width}?  ( width  => $opts{width} ) : ()),
                (defined $opts{height}? ( height => $opts{height} ) : ()),
                ($flags?                ( flags => (SDL::SDL_ANYFORMAT() | $flags) ) : ()),
                opengl => 1,
                exit_on_quit => 1,
        );
        my $self= bless { sdl => $sdl }, $class;
        weaken($instances{$self}= $self);
        return $self;
}
END {
        delete $_->{sdl} for values %instances;
}
sub sdl { shift->{sdl} }
sub context_info {
        my $self= shift;
        sprintf("SDLx::App %s, OpenGL version %s\n",
                $self->sdl && $self->sdl->VERSION, glGetString(GL_VERSION));
}
sub swap_buffers {
        my $self= shift;
        $self->sdl->sync if $self->sdl;
}
1;
__END__
HideShow 52 lines of Pod
=pod
=encoding UTF-8
=head1 NAME
OpenGL::Sandbox::ContextShim::SDL - Create OpenGL context with SDLx::App
=head1 VERSION
version 0.120
=head1 DESCRIPTION
This class is loaded automatically if needed by L<OpenGL::Sandbox/make_context>.
It uses L<SDLx::App> to create an OpenGL context.
=head1 ATTRIBUTES
=head2 sdl
The SDLx::App 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