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;

   my ($tw, $th, $data);

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

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

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

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

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

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

   pad2pot $data, $tw, $th unless $GL_NPOT;
   $tw = min $MAX_W, $tw;
   $th = min $MAX_H, $th;

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

   my $need_render = $self->{render_cb} || $tw < $self->{w} || $th < $self->{h};

   if ($need_render) {
      glViewport 0, 0, $tw, $th;
      glMatrixMode GL_PROJECTION;
      glLoadIdentity;
      glOrtho 0, $self->{w}, 0, $self->{h}, -10000, 10000;
      glMatrixMode GL_MODELVIEW;
      glLoadIdentity;

      if ($self->{render_cb}) {
         $self->{render_cb}->($self, $self->{w}, $self->{h});
      } else {
         glPixelZoom $tw / $self->{w}, $th / $self->{h};
         glDrawPixels $self->{w}, $self->{h},
                      $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 ($need_render) {
      glCopyTexImage2D GL_TEXTURE_2D, 0,
                   $self->{internalformat},
                   0, 0,
                   $tw, $th,
                   0;
      gl_check "copying to texture %dx%d if=%x",
               $tw, $th, $self->{internalformat};
   } else {
      glTexImage2D GL_TEXTURE_2D, 0,
                   $self->{internalformat},
                   $tw, $th,
                   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} = min 1, $self->{w} / $tw;
   $self->{t} = min 1, $self->{h} / $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:	1.14
Committed:	Tue Jul 17 13:53:02 2007 UTC (16 years, 10 months ago) by root
Branch:	MAIN
Changes since 1.13:	+49 -23 lines
Log Message:	tolerate implementation texture size limits, up to a limit, or so
#	User	Rev	Content
1	root	1.1	=head1 NAME
2
3	root	1.11	CFPlus::Texture - tetxure class for CFPlus
4	root	1.1
5			=head1 SYNOPSIS
6
7	root	1.11	use CFPlus::Texture;
8	root	1.1
9			=head1 DESCRIPTION
10
11			=over 4
12
13			=cut
14
15	root	1.11	package CFPlus::Texture;
16	root	1.1
17			use strict;
18
19	root	1.14	use List::Util qw(max min);
20	root	1.11	use CFPlus::OpenGL;
21	root	1.1
22			my %TEXTURES;
23	root	1.14	my ($MAX_W, $MAX_H) = (4096, 4096); # maximum texture size attempted by this module
24	root	1.1
25			sub new {
26			my ($class, %data) = @_;
27
28			my $self = bless {
29			internalformat => GL_RGBA,
30			format => GL_RGBA,
31			type => GL_UNSIGNED_BYTE,
32			%data,
33			}, $class;
34
35	root	1.13	CFPlus::weaken ($TEXTURES{$self+0} = $self);
36	root	1.1
37			$self->upload;
38
39			$self
40			}
41
42			sub new_from_image {
43			my ($class, $image, %arg) = @_;
44
45	root	1.7	$class->new (image => $image, internalformat => undef, %arg)
46	root	1.1	}
47
48			sub new_from_file {
49			my ($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 => $surface->height,
67			# )
68			#}
69
70	root	1.10	#sub new_from_layout {
71			# my ($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 => $format,
81			# type => GL_UNSIGNED_BYTE,
82			# %arg,
83			# )
84			#}
85	root	1.1
86			sub new_from_opengl {
87			my ($class, $w, $h, $cb) = @_;
88
89	root	1.12	$class->new (w => $w \|\| 1, h => $h \|\| 1, render_cb => $cb, nearest => 1)
90	root	1.1	}
91
92			sub upload {
93			my ($self) = @_;
94
95			return unless $GL_VERSION;
96
97	root	1.14	my ($tw, $th, $data);
98	root	1.1
99			if (exists $self->{data}) {
100			$data = $self->{data};
101	root	1.14	($tw, $th) = @$self{qw(w h)};
102	root	1.1
103			} elsif (exists $self->{render_cb}) {
104	root	1.14	($tw, $th) = @$self{qw(w h)};
105	root	1.1
106			} else {
107	root	1.7	($self->{w}, $self->{h}, $data, my $internalformat, $self->{format}, $self->{type})
108	root	1.11	= CFPlus::load_image_inline $self->{image};
109	root	1.7
110			$self->{internalformat} \|\|= $internalformat;
111	root	1.14	($tw, $th) = @$self{qw(w h)};
112	root	1.1	}
113
114	root	1.14	defined $data or $self->{render_cb} or die; # some sanity check
115	root	1.1
116	root	1.11	$self->{minified} \|\|= [CFPlus::average $tw, $th, $data]
117	root	1.1	if $self->{minify};
118
119	root	1.5	pad2pot $data, $tw, $th unless $GL_NPOT;
120	root	1.14	$tw = min $MAX_W, $tw;
121			$th = min $MAX_H, $th;
122
123			# now further decrease texture size
124			while (!texture_valid_2d $self->{internalformat}, $tw, $th, $self->{format}, $self->{type}) {
125			# quarter the texture size
126			$tw >>= 1;
127			$th >>= 1;
128			}
129
130			my $need_render = $self->{render_cb} \|\| $tw < $self->{w} \|\| $th < $self->{h};
131	root	1.1
132	root	1.14	if ($need_render) {
133			glViewport 0, 0, $tw, $th;
134			glMatrixMode GL_PROJECTION;
135			glLoadIdentity;
136			glOrtho 0, $self->{w}, 0, $self->{h}, -10000, 10000;
137			glMatrixMode GL_MODELVIEW;
138			glLoadIdentity;
139	root	1.1
140	root	1.14	if ($self->{render_cb}) {
141			$self->{render_cb}->($self, $self->{w}, $self->{h});
142			} else {
143			glPixelZoom $tw / $self->{w}, $th / $self->{h};
144			glDrawPixels $self->{w}, $self->{h},
145			$self->{format},
146			$self->{type},
147			$data;
148			glPixelZoom 1, 1;
149			}
150			}
151	root	1.1
152	root	1.14	glBindTexture GL_TEXTURE_2D, $self->{name} \|\|= glGenTexture;
153	root	1.1
154	root	1.2	if ($self->{wrap}) {
155			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT;
156			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT;
157			} else {
158			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, $GL_VERSION >= 1.2 ? GL_CLAMP_TO_EDGE : GL_CLAMP;
159			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, $GL_VERSION >= 1.2 ? GL_CLAMP_TO_EDGE : GL_CLAMP;
160			}
161	root	1.1
162	root	1.12	if ($::FAST \|\| $self->{nearest}) {
163	root	1.1	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST;
164			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST;
165			} elsif ($self->{mipmap} && $GL_VERSION >= 1.4) {
166			glTexParameter GL_TEXTURE_2D, GL_GENERATE_MIPMAP, 1;
167			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
168			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR;
169			} else {
170			glTexParameter GL_TEXTURE_2D, GL_GENERATE_MIPMAP, $self->{mipmap};
171			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
172			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR;
173			}
174
175			glGetError;
176
177	root	1.14	if ($need_render) {
178			glCopyTexImage2D GL_TEXTURE_2D, 0,
179			$self->{internalformat},
180			0, 0,
181			$tw, $th,
182			0;
183			gl_check "copying to texture %dx%d if=%x",
184			$tw, $th, $self->{internalformat};
185			} else {
186	root	1.1	glTexImage2D GL_TEXTURE_2D, 0,
187			$self->{internalformat},
188			$tw, $th,
189			0,
190			$self->{format},
191			$self->{type},
192			$data;
193			gl_check "uploading texture %dx%d if=%x f=%x t=%x",
194			$tw, $th, $self->{internalformat}, $self->{format}, $self->{type};
195			}
196	root	1.14
197			$self->{s} = min 1, $self->{w} / $tw;
198			$self->{t} = min 1, $self->{h} / $th;
199	root	1.1	}
200
201	root	1.8	sub shutdown {
202			my ($self) = @_;
203
204	root	1.9	glDeleteTexture $self->{name}
205	root	1.8	if $self->{name};
206			}
207
208	root	1.1	sub DESTROY {
209			my ($self) = @_;
210
211			delete $TEXTURES{$self+0};
212
213	root	1.8	$self->shutdown;
214	root	1.1	}
215
216	root	1.11	$CFPlus::OpenGL::INIT_HOOK{"CFPlus::Texture"} = sub {
217	root	1.9	# first mark all existing texture names as in-use, in case the context lost textures
218			glBindTexture GL_TEXTURE_2D, $_->{name}
219			for values %TEXTURES;
220	root	1.1	$_->upload
221			for values %TEXTURES;
222			};
223
224	root	1.11	$CFPlus::OpenGL::SHUTDOWN_HOOK{"CFPlus::Texture"} = sub {
225	root	1.8	$_->shutdown
226			for values %TEXTURES;
227			};
228
229	root	1.1	1;
230
231			=back
232
233			=head1 AUTHOR
234
235			Marc Lehmann <schmorp@schmorp.de>
236			http://home.schmorp.de/
237
238			=cut
239