deliantra/Deliantra-Client/DC.pm

=head1 NAME

CFClient - undocumented utility garbage for our crossfire client

=head1 SYNOPSIS

 use CFClient;

=head1 DESCRIPTION

=over 4

=cut

package CFClient;

BEGIN {
   $VERSION = '0.1';

   use XSLoader;
   XSLoader::load "CFClient", $VERSION;
}

use SDL::OpenGL;

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;

   glClearColor 0.45, 0.45, 0.45, 1;

   glEnable GL_TEXTURE_2D;
   glEnable GL_COLOR_MATERIAL;
   glShadeModel GL_FLAT;
   glDisable GL_DEPTH_TEST;
   glBlendFunc GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA;

   glHint GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST;

   CFClient::Texture::restore_state ();
}

sub find_rcfile($) {
   my $path;

   for (@INC) {
      $path = "$_/CFClient/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 CFClient::Texture;

use strict;

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,
#      w      => $surface->width,
#      h      => $surface->height,
#   )
#}

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

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

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

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

   $class->new (w => $w, h => $h, render_cb => $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 $GL_VERSION;

   my $data;

   if (exists $self->{data}) {
      $data = $self->{data};

   } elsif (exists $self->{render_cb}) {
      glViewport 0, 0, $self->{w}, $self->{h};
      glOrtho 0, $self->{w}, 0, $self->{h}, -10000, 10000;
      glMatrixMode GL_PROJECTION;
      glLoadIdentity;
      glMatrixMode GL_MODELVIEW;
      glLoadIdentity;
      glClear GL_COLOR_BUFFER_BIT;
      $self->{render_cb}->($self, $self->{w}, $self->{h});

   } 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->{w} = $pb->get_width;
      $self->{h} = $pb->get_height;

      $data = $pb->get_pixels;
   }

   my ($tw, $th) = @$self{qw(w h)};

   unless ($tw && $th) {
      $tw = $th = 1;
      $data = "\x00" x 64;
   }

   unless ($GL_NPOT) {
      # TODO: does not work for zero-sized textures
      $tw = topot $tw;
      $th = topot $th;

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

   $self->{s} = $self->{w} / $tw;
   $self->{t} = $self->{h} / $th;

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

   glBindTexture GL_TEXTURE_2D, $self->{name};

   glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, $::FAST ? GL_NEAREST : GL_LINEAR;
   glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, $::FAST ? GL_NEAREST : GL_LINEAR;
   glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP;
   glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP;
   
   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;
      glGetError and die;
   }
}

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:	1.27
Committed:	Wed Apr 12 18:09:21 2006 UTC (18 years, 1 month ago) by root
Branch:	MAIN
Changes since 1.26:	+1 -1 lines
Log Message:	less SDL more SDL
#	User	Rev	Content
1	root	1.1	=head1 NAME
2
3	root	1.22	CFClient - undocumented utility garbage for our crossfire client
4	root	1.1
5			=head1 SYNOPSIS
6
7	root	1.22	use CFClient;
8	root	1.1
9			=head1 DESCRIPTION
10
11			=over 4
12
13			=cut
14
15	root	1.22	package CFClient;
16	root	1.1
17			BEGIN {
18			$VERSION = '0.1';
19
20	root	1.2	use XSLoader;
21	root	1.22	XSLoader::load "CFClient", $VERSION;
22	root	1.1	}
23
24	root	1.26	use SDL::OpenGL;
25
26	root	1.19	our %GL_EXT;
27			our $GL_VERSION;
28
29			our $GL_NPOT;
30
31			sub gl_init {
32			$GL_VERSION = gl_version * 1;
33			%GL_EXT = map +($_ => 1), split /\s+/, gl_extensions;
34
35			$GL_NPOT = $GL_EXT{GL_ARB_texture_non_power_of_two} \|\| $GL_VERSION >= 2;
36
37	root	1.26	glClearColor 0.45, 0.45, 0.45, 1;
38
39			glEnable GL_TEXTURE_2D;
40			glEnable GL_COLOR_MATERIAL;
41			glShadeModel GL_FLAT;
42			glDisable GL_DEPTH_TEST;
43			glBlendFunc GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA;
44
45			glHint GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST;
46
47	root	1.22	CFClient::Texture::restore_state ();
48	root	1.19	}
49
50	root	1.5	sub find_rcfile($) {
51			my $path;
52
53			for (@INC) {
54	root	1.22	$path = "$_/CFClient/resources/$_[0]";
55	root	1.5	return $path if -r $path;
56			}
57
58			die "FATAL: can't find required file $_[0]\n";
59			}
60
61			sub read_cfg {
62			my ($file) = @_;
63
64			open CFG, $file
65			or return;
66
67			my $CFG;
68
69			local $/;
70			$CFG = eval <CFG>;
71
72			$::CFG = $CFG;
73
74			close CFG;
75			}
76
77			sub write_cfg {
78			my ($file) = @_;
79
80			open CFG, ">$file"
81			or return;
82
83			{
84	elmex	1.9	require Data::Dumper;
85	root	1.5	local $Data::Dumper::Purity = 1;
86			$::CFG->{VERSION} = $::VERSION;
87			print CFG Data::Dumper->Dump ([$::CFG], [qw/CFG/]);
88			}
89
90			close CFG;
91			}
92
93	root	1.22	package CFClient::Texture;
94	root	1.3
95	root	1.25	use strict;
96
97	root	1.3	use Scalar::Util;
98
99			use SDL::OpenGL;
100
101			my @textures;
102
103	root	1.14	sub new {
104	root	1.4	my ($class, %data) = @_;
105
106	root	1.14	my $self = bless {
107	root	1.15	internalformat => GL_RGBA,
108			format => GL_RGBA,
109	root	1.14	%data,
110			}, $class;
111	root	1.4
112			push @textures, $self;
113			Scalar::Util::weaken $textures[-1];
114
115			$self->upload;
116
117			$self
118			}
119
120			sub new_from_image {
121			my ($class, $image) = @_;
122
123	root	1.14	$class->new (image => $image)
124	root	1.4	}
125
126	root	1.3	sub new_from_file {
127			my ($class, $path) = @_;
128
129			open my $fh, "<:raw", $path
130			or die "$path: $!";
131
132			local $/;
133	root	1.4	$class->new_from_image (<$fh>)
134	root	1.3	}
135
136	root	1.14	#sub new_from_surface {
137			# my ($class, $surface) = @_;
138			#
139			# $surface->rgba;
140			#
141			# $class->new (
142			# data => $surface->pixels,
143	root	1.24	# w => $surface->width,
144			# h => $surface->height,
145	root	1.14	# )
146			#}
147
148	root	1.21	sub new_from_layout {
149			my ($class, $layout) = @_;
150	root	1.14
151	root	1.21	my ($w, $h, $data) = $layout->render;
152	root	1.14
153			$class->new (
154	root	1.24	w => $w,
155			h => $h,
156	root	1.14	data => $data,
157	root	1.16	internalformat => GL_ALPHA4,
158	root	1.14	format => GL_ALPHA,
159	root	1.4	)
160	root	1.3	}
161
162	root	1.8	sub new_from_opengl {
163			my ($class, $w, $h, $cb) = @_;
164
165	root	1.24	$class->new (w => $w, h => $h, render_cb => $cb)
166	root	1.8	}
167
168	root	1.19	sub topot {
169			(grep $_ >= $_[0], 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768)[0]
170			}
171
172	root	1.3	sub upload {
173			my ($self) = @_;
174
175	root	1.27	return unless $GL_VERSION;
176	root	1.3
177	root	1.6	my $data;
178	root	1.3
179			if (exists $self->{data}) {
180	root	1.6	$data = $self->{data};
181	root	1.25
182	root	1.24	} elsif (exists $self->{render_cb}) {
183			glViewport 0, 0, $self->{w}, $self->{h};
184	root	1.25	glOrtho 0, $self->{w}, 0, $self->{h}, -10000, 10000;
185	root	1.12	glMatrixMode GL_PROJECTION;
186			glLoadIdentity;
187			glMatrixMode GL_MODELVIEW;
188			glLoadIdentity;
189	root	1.8	glClear GL_COLOR_BUFFER_BIT;
190	root	1.25	$self->{render_cb}->($self, $self->{w}, $self->{h});
191	root	1.8
192	root	1.3	} else {
193			my $pb = new Gtk2::Gdk::PixbufLoader;
194	root	1.4	$pb->write ($self->{image});
195	root	1.3	$pb->close;
196
197			$pb = $pb->get_pixbuf;
198			$pb = $pb->add_alpha (0, 0, 0, 0);
199
200	root	1.24	$self->{w} = $pb->get_width;
201			$self->{h} = $pb->get_height;
202	root	1.6
203			$data = $pb->get_pixels;
204	root	1.3	}
205
206	root	1.24	my ($tw, $th) = @$self{qw(w h)};
207	root	1.19
208	root	1.25	unless ($tw && $th) {
209	root	1.24	$tw = $th = 1;
210			$data = "\x00" x 64;
211			}
212
213			unless ($GL_NPOT) {
214			# TODO: does not work for zero-sized textures
215	root	1.19	$tw = topot $tw;
216			$th = topot $th;
217
218	root	1.25	if ($tw != $self->{w} \|\| $th != $self->{h} && defined $data) {
219	root	1.24	my $bpp = (length $data) / ($self->{w} * $self->{h});
220	root	1.20	$data = pack "(a" . ($tw * $bpp) . ")*",
221	root	1.24	unpack "(a" . ($self->{w} * $bpp) . ")*", $data;
222			$data .= ("\x00" x ($tw * $bpp)) x ($th - $self->{h});
223	root	1.19	}
224			}
225
226	root	1.24	$self->{s} = $self->{w} / $tw;
227			$self->{t} = $self->{h} / $th;
228	root	1.19
229			$self->{name} \|\|= (glGenTextures 1)->[0];
230	root	1.3
231			glBindTexture GL_TEXTURE_2D, $self->{name};
232
233	root	1.26	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, $::FAST ? GL_NEAREST : GL_LINEAR;
234			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, $::FAST ? GL_NEAREST : GL_LINEAR;
235	root	1.3	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP;
236			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP;
237
238	root	1.8	if (defined $data) {
239			glTexImage2D GL_TEXTURE_2D, 0,
240	root	1.15	$self->{internalformat},
241	root	1.19	$tw, $th, # need to pad texture first
242	root	1.8	0,
243	root	1.14	$self->{format},
244	root	1.8	GL_UNSIGNED_BYTE,
245			$data;
246	root	1.16	glGetError and die;
247	root	1.8	} else {
248			glCopyTexImage2D GL_TEXTURE_2D, 0,
249	root	1.15	$self->{internalformat},
250	root	1.8	0, 0,
251	root	1.19	$tw, $th,
252	root	1.8	0;
253	root	1.25	glGetError and die;
254	root	1.8	}
255	root	1.3	}
256
257			sub DESTROY {
258			my ($self) = @_;
259
260			return unless exists $self->{name};
261
262			glDeleteTextures delete $self->{name};
263			}
264
265	root	1.19	sub restore_state{
266	root	1.3	$_->upload
267			for grep $_, @textures;
268			};
269
270	root	1.1	1;
271
272			=back
273
274			=head1 AUTHOR
275
276			Marc Lehmann <schmorp@schmorp.de>
277			http://home.schmorp.de/
278
279			=cut
280