Deliantra-Client/DC/Texture.pm

=head1 NAME

CFPlus::Texture - tetxure class for CFPlus

=head1 SYNOPSIS

 use CFPlus::Texture;

=head1 DESCRIPTION

=over 4

=cut

package CFPlus::Texture;

use strict;

use List::Util qw(max min);
use CFPlus::OpenGL;

my %TEXTURES;
my ($MAX_W, $MAX_H) = (4096, 4096); # maximum texture size attempted by this module

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

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

   CFPlus::weaken ($TEXTURES{$self+0} = $self);

   $self->upload;

   $self
}

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

   $class->new (image => $image, internalformat => undef, %arg)
}

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

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

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

#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, $layout, %arg) = @_;
#
#   my ($w, $h, $data, $format, $internalformat) = $layout->render;
#
#   $class->new (
#      w              => $w,
#      h              => $h,
#      data           => $data,
#      format         => $format,
#      internalformat => $format,
#      type           => GL_UNSIGNED_BYTE,
#      %arg,
#   )
#}

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

   $class->new (w => $w || 1, h => $h || 1, render_cb => $cb, nearest => 1)
}

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

   return unless $GL_VERSION;

   # $tw,$th texture
   # $rw,$rh rendered/used size
   # $dw,$dh $data

   my ($data, $dw, $dh);

   if (exists $self->{data}) {
      $data = $self->{data};
      ($dw, $dh) = @$self{qw(w h)};

   } elsif (exists $self->{render_cb}) {
      ($dw, $dh) = @$self{qw(w h)};

   } else {
      ($self->{w}, $self->{h}, $data, my $internalformat, $self->{format}, $self->{type})
         = CFPlus::load_image_inline $self->{image};

      $self->{internalformat} ||= $internalformat;
      ($dw, $dh) = @$self{qw(w h)};
   }

   my ($tw, $th) = ($dw, $dh);

   defined $data or $self->{render_cb} or die; # some sanity check

   $self->{minified} ||= [CFPlus::average $dw, $dh, $data]
      if $self->{minify};

   # against rather broken cards we enforce a maximum texture size
   $tw = min $MAX_W, minpot $tw;
   $th = min $MAX_H, minpot $th;

   # if only pot-textures are allowed, pot'ify tw/th
   unless ($GL_NPOT && 0) {#d#
      $tw = minpot $tw;
      $th = minpot $th;
   }

   # now further decrease texture size until the
   # card does accept it
   while (!texture_valid_2d $self->{internalformat}, $tw, $th, $self->{format}, $self->{type}) {
      # quarter the texture size
      $tw >>= 1;
      $th >>= 1;
   }

   # decide the amount of space used in the texture
   my ($rw, $rh);
   my ($ox, $oy); # area shift to lessen effetc of buggy opengl implementations (nvida, ati)
   my $render;

   if ($self->{render_cb}) {
      # use only part of the texture
      #$rw >>= 1 while $rw > $tw;
      #$rh >>= 1 while $rh > $th;
      $rw = min $dw, $tw;
      $rh = min $dh, $th;
      ++$render;
   } else {
      if ($self->{wrap} || $tw < $dw || $th < $dh) {
         # scale to the full texture size
         ($rw, $rh) = ($tw, $th);
         ++$render;
      } else {
         # pad
         pad $data, $dw, $dh, $tw, $th;
         ($rw, $rh) = ($dw, $dh);
         ($dw, $dh) = ($tw, $th);
      }
   }

   if ($render) {
      $ox = int .5 * ($::WIDTH  - $rw);
      $oy = int .5 * ($::HEIGHT - $rh);

      glViewport $ox, $oy, $tw, $th;
      #glScissor 0, 0, $tw, $th;
      #glEnable GL_SCISSOR_TEST;
      glMatrixMode GL_PROJECTION;
      glLoadIdentity;
      glOrtho 0, $tw, 0, $th, -10000, 10000;
      glMatrixMode GL_MODELVIEW;
      glLoadIdentity;

      if ($self->{render_cb}) {
         glScale $rw / $dw, $rh / $dh;
         $self->{render_cb}->($self, $rw, $rh);
      } else {
         glClearColor 0, 0, 0, 0;
         glClear GL_COLOR_BUFFER_BIT;
         glPixelZoom $tw / $dw, $th / $dh;
         glRasterPos 0, 0;
         glDrawPixels $dw, $dh,
                      $self->{format},
                      $self->{type},
                      $data;
         glPixelZoom 1, 1;
      }
   }

   glBindTexture GL_TEXTURE_2D, $self->{name} ||= glGenTexture;

   if ($self->{wrap}) {
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT;
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT;
   } else {
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, $GL_VERSION >= 1.2 ? GL_CLAMP_TO_EDGE : GL_CLAMP;
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, $GL_VERSION >= 1.2 ? GL_CLAMP_TO_EDGE : GL_CLAMP;
   }

   if ($::FAST || $self->{nearest}) {
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST;
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST;
   } elsif ($self->{mipmap} && $GL_VERSION >= 1.4) {
      glTexParameter GL_TEXTURE_2D, GL_GENERATE_MIPMAP, 1;
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR;
   } else {
      glTexParameter GL_TEXTURE_2D, GL_GENERATE_MIPMAP, $self->{mipmap};
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
      glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR;
   }
   
   glGetError;

   if ($render) {
      glCopyTexImage2D GL_TEXTURE_2D, 0,
                   $self->{internalformat},
                   $ox, $oy,
                   $tw, $th,
                   0;
      gl_check "copying to texture %dx%d if=%x",
               $tw, $th, $self->{internalformat};

      #glDisable GL_SCISSOR_TEST;
   } else {
      glTexImage2D GL_TEXTURE_2D, 0,
                   $self->{internalformat},
                   $dw, $dh,
                   0,
                   $self->{format},
                   $self->{type},
                   $data;
      gl_check "uploading texture %dx%d if=%x f=%x t=%x",
               $tw, $th, $self->{internalformat},  $self->{format}, $self->{type};
   }

   $self->{s} = $rw / $tw;
   $self->{t} = $rh / $th;
}

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

   glDeleteTexture $self->{name}
      if $self->{name};
} 

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

   delete $TEXTURES{$self+0};

   $self->shutdown;
}

$CFPlus::OpenGL::INIT_HOOK{"CFPlus::Texture"} = sub {
   # first mark all existing texture names as in-use, in case the context lost textures
   glBindTexture GL_TEXTURE_2D, $_->{name}
      for values %TEXTURES;
   $_->upload
      for values %TEXTURES;
};

$CFPlus::OpenGL::SHUTDOWN_HOOK{"CFPlus::Texture"} = sub {
   $_->shutdown
      for values %TEXTURES;
};

1;

=back

=head1 AUTHOR

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

=cut

Revision:	1.23
Committed:	Tue Jul 24 01:24:27 2007 UTC (16 years, 10 months ago) by root
Branch:	MAIN
Changes since 1.22:	+2 -2 lines
Log Message:	do it the right way...
#	Content
1	=head1 NAME
2
3	CFPlus::Texture - tetxure class for CFPlus
4
5	=head1 SYNOPSIS
6
7	use CFPlus::Texture;
8
9	=head1 DESCRIPTION
10
11	=over 4
12
13	=cut
14
15	package CFPlus::Texture;
16
17	use strict;
18
19	use List::Util qw(max min);
20	use CFPlus::OpenGL;
21
22	my %TEXTURES;
23	my ($MAX_W, $MAX_H) = (4096, 4096); # maximum texture size attempted by this module
24
25	sub new {
26	my ($class, %data) = @_;
27
28	my $self = bless {
29	internalformat => GL_RGBA,
30	format => GL_RGBA,
31	type => GL_UNSIGNED_BYTE,
32	%data,
33	}, $class;
34
35	CFPlus::weaken ($TEXTURES{$self+0} = $self);
36
37	$self->upload;
38
39	$self
40	}
41
42	sub new_from_image {
43	my ($class, $image, %arg) = @_;
44
45	$class->new (image => $image, internalformat => undef, %arg)
46	}
47
48	sub new_from_file {
49	my ($class, $path, %arg) = @_;
50
51	open my $fh, "<:raw", $path
52	or die "$path: $!";
53
54	local $/;
55	$class->new_from_image (<$fh>, %arg)
56	}
57
58	#sub new_from_surface {
59	# my ($class, $surface) = @_;
60	#
61	# $surface->rgba;
62	#
63	# $class->new (
64	# data => $surface->pixels,
65	# w => $surface->width,
66	# h => $surface->height,
67	# )
68	#}
69
70	#sub new_from_layout {
71	# my ($class, $layout, %arg) = @_;
72	#
73	# my ($w, $h, $data, $format, $internalformat) = $layout->render;
74	#
75	# $class->new (
76	# w => $w,
77	# h => $h,
78	# data => $data,
79	# format => $format,
80	# internalformat => $format,
81	# type => GL_UNSIGNED_BYTE,
82	# %arg,
83	# )
84	#}
85
86	sub new_from_opengl {
87	my ($class, $w, $h, $cb) = @_;
88
89	$class->new (w => $w \|\| 1, h => $h \|\| 1, render_cb => $cb, nearest => 1)
90	}
91
92	sub upload {
93	my ($self) = @_;
94
95	return unless $GL_VERSION;
96
97	# $tw,$th texture
98	# $rw,$rh rendered/used size
99	# $dw,$dh $data
100
101	my ($data, $dw, $dh);
102
103	if (exists $self->{data}) {
104	$data = $self->{data};
105	($dw, $dh) = @$self{qw(w h)};
106
107	} elsif (exists $self->{render_cb}) {
108	($dw, $dh) = @$self{qw(w h)};
109
110	} else {
111	($self->{w}, $self->{h}, $data, my $internalformat, $self->{format}, $self->{type})
112	= CFPlus::load_image_inline $self->{image};
113
114	$self->{internalformat} \|\|= $internalformat;
115	($dw, $dh) = @$self{qw(w h)};
116	}
117
118	my ($tw, $th) = ($dw, $dh);
119
120	defined $data or $self->{render_cb} or die; # some sanity check
121
122	$self->{minified} \|\|= [CFPlus::average $dw, $dh, $data]
123	if $self->{minify};
124
125	# against rather broken cards we enforce a maximum texture size
126	$tw = min $MAX_W, minpot $tw;
127	$th = min $MAX_H, minpot $th;
128
129	# if only pot-textures are allowed, pot'ify tw/th
130	unless ($GL_NPOT && 0) {#d#
131	$tw = minpot $tw;
132	$th = minpot $th;
133	}
134
135	# now further decrease texture size until the
136	# card does accept it
137	while (!texture_valid_2d $self->{internalformat}, $tw, $th, $self->{format}, $self->{type}) {
138	# quarter the texture size
139	$tw >>= 1;
140	$th >>= 1;
141	}
142
143	# decide the amount of space used in the texture
144	my ($rw, $rh);
145	my ($ox, $oy); # area shift to lessen effetc of buggy opengl implementations (nvida, ati)
146	my $render;
147
148	if ($self->{render_cb}) {
149	# use only part of the texture
150	#$rw >>= 1 while $rw > $tw;
151	#$rh >>= 1 while $rh > $th;
152	$rw = min $dw, $tw;
153	$rh = min $dh, $th;
154	++$render;
155	} else {
156	if ($self->{wrap} \|\| $tw < $dw \|\| $th < $dh) {
157	# scale to the full texture size
158	($rw, $rh) = ($tw, $th);
159	++$render;
160	} else {
161	# pad
162	pad $data, $dw, $dh, $tw, $th;
163	($rw, $rh) = ($dw, $dh);
164	($dw, $dh) = ($tw, $th);
165	}
166	}
167
168	if ($render) {
169	$ox = int .5 * ($::WIDTH - $rw);
170	$oy = int .5 * ($::HEIGHT - $rh);
171
172	glViewport $ox, $oy, $tw, $th;
173	#glScissor 0, 0, $tw, $th;
174	#glEnable GL_SCISSOR_TEST;
175	glMatrixMode GL_PROJECTION;
176	glLoadIdentity;
177	glOrtho 0, $tw, 0, $th, -10000, 10000;
178	glMatrixMode GL_MODELVIEW;
179	glLoadIdentity;
180
181	if ($self->{render_cb}) {
182	glScale $rw / $dw, $rh / $dh;
183	$self->{render_cb}->($self, $rw, $rh);
184	} else {
185	glClearColor 0, 0, 0, 0;
186	glClear GL_COLOR_BUFFER_BIT;
187	glPixelZoom $tw / $dw, $th / $dh;
188	glRasterPos 0, 0;
189	glDrawPixels $dw, $dh,
190	$self->{format},
191	$self->{type},
192	$data;
193	glPixelZoom 1, 1;
194	}
195	}
196
197	glBindTexture GL_TEXTURE_2D, $self->{name} \|\|= glGenTexture;
198
199	if ($self->{wrap}) {
200	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT;
201	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT;
202	} else {
203	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, $GL_VERSION >= 1.2 ? GL_CLAMP_TO_EDGE : GL_CLAMP;
204	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, $GL_VERSION >= 1.2 ? GL_CLAMP_TO_EDGE : GL_CLAMP;
205	}
206
207	if ($::FAST \|\| $self->{nearest}) {
208	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST;
209	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST;
210	} elsif ($self->{mipmap} && $GL_VERSION >= 1.4) {
211	glTexParameter GL_TEXTURE_2D, GL_GENERATE_MIPMAP, 1;
212	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
213	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR;
214	} else {
215	glTexParameter GL_TEXTURE_2D, GL_GENERATE_MIPMAP, $self->{mipmap};
216	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
217	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR;
218	}
219
220	glGetError;
221
222	if ($render) {
223	glCopyTexImage2D GL_TEXTURE_2D, 0,
224	$self->{internalformat},
225	$ox, $oy,
226	$tw, $th,
227	0;
228	gl_check "copying to texture %dx%d if=%x",
229	$tw, $th, $self->{internalformat};
230
231	#glDisable GL_SCISSOR_TEST;
232	} else {
233	glTexImage2D GL_TEXTURE_2D, 0,
234	$self->{internalformat},
235	$dw, $dh,
236	0,
237	$self->{format},
238	$self->{type},
239	$data;
240	gl_check "uploading texture %dx%d if=%x f=%x t=%x",
241	$tw, $th, $self->{internalformat}, $self->{format}, $self->{type};
242	}
243
244	$self->{s} = $rw / $tw;
245	$self->{t} = $rh / $th;
246	}
247
248	sub shutdown {
249	my ($self) = @_;
250
251	glDeleteTexture $self->{name}
252	if $self->{name};
253	}
254
255	sub DESTROY {
256	my ($self) = @_;
257
258	delete $TEXTURES{$self+0};
259
260	$self->shutdown;
261	}
262
263	$CFPlus::OpenGL::INIT_HOOK{"CFPlus::Texture"} = sub {
264	# first mark all existing texture names as in-use, in case the context lost textures
265	glBindTexture GL_TEXTURE_2D, $_->{name}
266	for values %TEXTURES;
267	$_->upload
268	for values %TEXTURES;
269	};
270
271	$CFPlus::OpenGL::SHUTDOWN_HOOK{"CFPlus::Texture"} = sub {
272	$_->shutdown
273	for values %TEXTURES;
274	};
275
276	1;
277
278	=back
279
280	=head1 AUTHOR
281
282	Marc Lehmann <schmorp@schmorp.de>
283	http://home.schmorp.de/
284
285	=cut
286