cf.schmorp.de/Deliantra-Client/DC.pm

=head1 NAME

Crossfire::Client - undocumented utility garbage for our crossfire client

=head1 SYNOPSIS

 use Crossfire::Client;

=head1 DESCRIPTION

=over 4

=cut

package Crossfire::Client;

BEGIN {
   $VERSION = '0.1';

   use XSLoader;
   XSLoader::load "Crossfire::Client", $VERSION;
}

our %GL_EXT;
our $GL_VERSION;

our $GL_NPOT;

sub gl_init {
   $GL_VERSION = gl_version * 1;
   %GL_EXT = map +($_ => 1), split /\s+/, gl_extensions;

   $GL_NPOT = $GL_EXT{GL_ARB_texture_non_power_of_two} || $GL_VERSION >= 2;

   Crossfire::Client::Texture::restore_state ();
}

sub find_rcfile($) {
   my $path;

   for (@INC) {
      $path = "$_/Crossfire/resources/$_[0]";
      return $path if -r $path;
   }

   die "FATAL: can't find required file $_[0]\n";
}

sub read_cfg {
   my ($file) = @_;

   open CFG, $file
      or return;

   my $CFG;

   local $/;
   $CFG = eval <CFG>;

   $::CFG = $CFG;

   close CFG;
}

sub write_cfg {
   my ($file) = @_;

   open CFG, ">$file"
      or return;

   {
      require Data::Dumper;
      local $Data::Dumper::Purity = 1;
      $::CFG->{VERSION} = $::VERSION;
      print CFG Data::Dumper->Dump ([$::CFG], [qw/CFG/]);
   }

   close CFG;
}

package Crossfire::Client::Texture;

use Scalar::Util;

use SDL::OpenGL;

my @textures;

sub new {
   my ($class, %data) = @_;

   my $self = bless {
      internalformat => GL_RGBA,
      format         => GL_RGBA,
      %data,
   }, $class;

   push @textures, $self;
   Scalar::Util::weaken $textures[-1];

   $self->upload;

   $self
}

sub new_from_image {
   my ($class, $image) = @_;

   $class->new (image => $image)
}

sub new_from_file {
   my ($class, $path) = @_;

   open my $fh, "<:raw", $path
      or die "$path: $!";

   local $/;
   $class->new_from_image (<$fh>)
}

#sub new_from_surface {
#   my ($class, $surface) = @_;
#
#   $surface->rgba;
#
#   $class->new (
#      data   => $surface->pixels,
#      width  => $surface->width,
#      height => $surface->height,
#   )
#}

sub new_from_layout {
   my ($class, $layout) = @_;

   my ($w, $h, $data) = $layout->render;

   $class->new (
      width          => $w,
      height         => $h,
      data           => $data,
      internalformat => GL_ALPHA4,
      format         => GL_ALPHA,
   )
}

sub new_from_opengl {
   my ($class, $w, $h, $cb) = @_;

   $class->new (width => $w, height => $h, rendercb => $cb)
}

sub topot {
   (grep $_ >= $_[0], 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768)[0]
}

sub upload {
   my ($self) = @_;

   return unless $SDL::App::USING_OPENGL;

   my $data;

   if (exists $self->{data}) {
      $data = $self->{data};
   } elsif (exists $self->{rendercb}) {
      glViewport 0, 0, $self->{width}, $self->{height};
      glMatrixMode GL_PROJECTION;
      glLoadIdentity;
      glOrtho 0, $self->{width}, 0, $self->{height}, -10000, 10000;
      glMatrixMode GL_MODELVIEW;
      glPushmatrix;
      glLoadIdentity;
      glClear GL_COLOR_BUFFER_BIT;

      $self->{rendercb}->($self, $self->{width}, $self->{height});
   } else {
      my $pb = new Gtk2::Gdk::PixbufLoader;
      $pb->write ($self->{image});
      $pb->close;

      $pb = $pb->get_pixbuf;
      $pb = $pb->add_alpha (0, 0, 0, 0);

      $self->{width}  = $pb->get_width;
      $self->{height} = $pb->get_height;

      $data = $pb->get_pixels;
   }

   my ($tw, $th) = @$self{qw(width height)};

   unless ($GL_NPOT) {
      $tw = topot $tw;
      $th = topot $th;

      if (defined $data) {
         my $bpp = (length $data) / ($self->{width} * $self->{height});
         $data = pack "(a" . ($tw * $bpp) . ")*",
                    unpack "(a" . ($self->{width} * $bpp) . ")*", $data;
         $data .= ("\x00" x ($tw * $bpp)) x ($th - $self->{height});
      }
   }

   $self->{s} = $self->{width}  / $tw;
   $self->{t} = $self->{height} / $th;

   $self->{name} ||= (glGenTextures 1)->[0];

   glBindTexture GL_TEXTURE_2D, $self->{name};

   glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
   glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR;#_MIPMAP_LINEAR;
   glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP;
   glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP;
   
   glGetError;
   if (defined $data) {
      glTexImage2D GL_TEXTURE_2D, 0,
                   $self->{internalformat},
                   $tw, $th, # need to pad texture first
                   0,
                   $self->{format},
                   GL_UNSIGNED_BYTE,
                   $data;
      glGetError and die;
   } else {
      glCopyTexImage2D GL_TEXTURE_2D, 0,
                   $self->{internalformat},
                   0, 0,
                   $tw, $th,
                   0;
      glPopmatrix;
   }
}

sub DESTROY {
   my ($self) = @_;

   return unless exists $self->{name};

   glDeleteTextures delete $self->{name};
}

sub restore_state{
   $_->upload
      for grep $_, @textures;
};

1;

=back

=head1 AUTHOR

 Marc Lehmann <schmorp@schmorp.de>
 http://home.schmorp.de/

=cut

Revision:	1.21
Committed:	Tue Apr 11 13:05:11 2006 UTC (18 years, 5 months ago) by root
Branch:	MAIN
Changes since 1.20:	+3 -3 lines
Log Message:	add text layout class and make use of it
#	User	Rev	Content
1	root	1.1	=head1 NAME
2
3			Crossfire::Client - undocumented utility garbage for our crossfire client
4
5			=head1 SYNOPSIS
6
7			use Crossfire::Client;
8
9			=head1 DESCRIPTION
10
11			=over 4
12
13			=cut
14
15			package Crossfire::Client;
16
17			BEGIN {
18			$VERSION = '0.1';
19
20	root	1.2	use XSLoader;
21	root	1.1	XSLoader::load "Crossfire::Client", $VERSION;
22			}
23
24	root	1.19	our %GL_EXT;
25			our $GL_VERSION;
26
27			our $GL_NPOT;
28
29			sub gl_init {
30			$GL_VERSION = gl_version * 1;
31			%GL_EXT = map +($_ => 1), split /\s+/, gl_extensions;
32
33			$GL_NPOT = $GL_EXT{GL_ARB_texture_non_power_of_two} \|\| $GL_VERSION >= 2;
34
35			Crossfire::Client::Texture::restore_state ();
36			}
37
38	root	1.5	sub find_rcfile($) {
39			my $path;
40
41			for (@INC) {
42			$path = "$_/Crossfire/resources/$_[0]";
43			return $path if -r $path;
44			}
45
46			die "FATAL: can't find required file $_[0]\n";
47			}
48
49			sub read_cfg {
50			my ($file) = @_;
51
52			open CFG, $file
53			or return;
54
55			my $CFG;
56
57			local $/;
58			$CFG = eval <CFG>;
59
60			$::CFG = $CFG;
61
62			close CFG;
63			}
64
65			sub write_cfg {
66			my ($file) = @_;
67
68			open CFG, ">$file"
69			or return;
70
71			{
72	elmex	1.9	require Data::Dumper;
73	root	1.5	local $Data::Dumper::Purity = 1;
74			$::CFG->{VERSION} = $::VERSION;
75			print CFG Data::Dumper->Dump ([$::CFG], [qw/CFG/]);
76			}
77
78			close CFG;
79			}
80
81	root	1.3	package Crossfire::Client::Texture;
82
83			use Scalar::Util;
84
85			use SDL::OpenGL;
86
87			my @textures;
88
89	root	1.14	sub new {
90	root	1.4	my ($class, %data) = @_;
91
92	root	1.14	my $self = bless {
93	root	1.15	internalformat => GL_RGBA,
94			format => GL_RGBA,
95	root	1.14	%data,
96			}, $class;
97	root	1.4
98			push @textures, $self;
99			Scalar::Util::weaken $textures[-1];
100
101			$self->upload;
102
103			$self
104			}
105
106			sub new_from_image {
107			my ($class, $image) = @_;
108
109	root	1.14	$class->new (image => $image)
110	root	1.4	}
111
112	root	1.3	sub new_from_file {
113			my ($class, $path) = @_;
114
115			open my $fh, "<:raw", $path
116			or die "$path: $!";
117
118			local $/;
119	root	1.4	$class->new_from_image (<$fh>)
120	root	1.3	}
121
122	root	1.14	#sub new_from_surface {
123			# my ($class, $surface) = @_;
124			#
125			# $surface->rgba;
126			#
127			# $class->new (
128			# data => $surface->pixels,
129			# width => $surface->width,
130			# height => $surface->height,
131			# )
132			#}
133
134	root	1.21	sub new_from_layout {
135			my ($class, $layout) = @_;
136	root	1.14
137	root	1.21	my ($w, $h, $data) = $layout->render;
138	root	1.14
139			$class->new (
140			width => $w,
141			height => $h,
142			data => $data,
143	root	1.16	internalformat => GL_ALPHA4,
144	root	1.14	format => GL_ALPHA,
145	root	1.4	)
146	root	1.3	}
147
148	root	1.8	sub new_from_opengl {
149			my ($class, $w, $h, $cb) = @_;
150
151	root	1.14	$class->new (width => $w, height => $h, rendercb => $cb)
152	root	1.8	}
153
154	root	1.19	sub topot {
155			(grep $_ >= $_[0], 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768)[0]
156			}
157
158	root	1.3	sub upload {
159			my ($self) = @_;
160
161			return unless $SDL::App::USING_OPENGL;
162
163	root	1.6	my $data;
164	root	1.3
165			if (exists $self->{data}) {
166	root	1.6	$data = $self->{data};
167	root	1.8	} elsif (exists $self->{rendercb}) {
168			glViewport 0, 0, $self->{width}, $self->{height};
169	root	1.12	glMatrixMode GL_PROJECTION;
170			glLoadIdentity;
171	root	1.18	glOrtho 0, $self->{width}, 0, $self->{height}, -10000, 10000;
172	root	1.12	glMatrixMode GL_MODELVIEW;
173			glPushmatrix;
174			glLoadIdentity;
175	root	1.8	glClear GL_COLOR_BUFFER_BIT;
176
177			$self->{rendercb}->($self, $self->{width}, $self->{height});
178	root	1.3	} else {
179			my $pb = new Gtk2::Gdk::PixbufLoader;
180	root	1.4	$pb->write ($self->{image});
181	root	1.3	$pb->close;
182
183			$pb = $pb->get_pixbuf;
184			$pb = $pb->add_alpha (0, 0, 0, 0);
185
186	root	1.6	$self->{width} = $pb->get_width;
187			$self->{height} = $pb->get_height;
188
189			$data = $pb->get_pixels;
190	root	1.3	}
191
192	root	1.19	my ($tw, $th) = @$self{qw(width height)};
193
194	root	1.20	unless ($GL_NPOT) {
195	root	1.19	$tw = topot $tw;
196			$th = topot $th;
197
198			if (defined $data) {
199	root	1.20	my $bpp = (length $data) / ($self->{width} * $self->{height});
200			$data = pack "(a" . ($tw * $bpp) . ")*",
201			unpack "(a" . ($self->{width} * $bpp) . ")*", $data;
202			$data .= ("\x00" x ($tw * $bpp)) x ($th - $self->{height});
203	root	1.19	}
204			}
205
206	root	1.20	$self->{s} = $self->{width} / $tw;
207			$self->{t} = $self->{height} / $th;
208	root	1.19
209			$self->{name} \|\|= (glGenTextures 1)->[0];
210	root	1.3
211			glBindTexture GL_TEXTURE_2D, $self->{name};
212
213	root	1.20	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
214			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR;#_MIPMAP_LINEAR;
215	root	1.3	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP;
216			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP;
217
218	root	1.16	glGetError;
219	root	1.8	if (defined $data) {
220			glTexImage2D GL_TEXTURE_2D, 0,
221	root	1.15	$self->{internalformat},
222	root	1.19	$tw, $th, # need to pad texture first
223	root	1.8	0,
224	root	1.14	$self->{format},
225	root	1.8	GL_UNSIGNED_BYTE,
226			$data;
227	root	1.16	glGetError and die;
228	root	1.8	} else {
229			glCopyTexImage2D GL_TEXTURE_2D, 0,
230	root	1.15	$self->{internalformat},
231	root	1.8	0, 0,
232	root	1.19	$tw, $th,
233	root	1.8	0;
234	root	1.12	glPopmatrix;
235	root	1.8	}
236	root	1.3	}
237
238			sub DESTROY {
239			my ($self) = @_;
240
241			return unless exists $self->{name};
242
243			glDeleteTextures delete $self->{name};
244			}
245
246	root	1.19	sub restore_state{
247	root	1.3	$_->upload
248			for grep $_, @textures;
249			};
250
251	root	1.1	1;
252
253			=back
254
255			=head1 AUTHOR
256
257			Marc Lehmann <schmorp@schmorp.de>
258			http://home.schmorp.de/
259
260			=cut
261