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...
#	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	1.16	# $tw,$th texture
98			# $rw,$rh rendered/used size
99			# $dw,$dh $data
100
101			my ($data, $dw, $dh);
102	root	1.1
103			if (exists $self->{data}) {
104			$data = $self->{data};
105	root	1.16	($dw, $dh) = @$self{qw(w h)};
106	root	1.1
107			} elsif (exists $self->{render_cb}) {
108	root	1.16	($dw, $dh) = @$self{qw(w h)};
109	root	1.1
110			} else {
111	root	1.7	($self->{w}, $self->{h}, $data, my $internalformat, $self->{format}, $self->{type})
112	root	1.11	= CFPlus::load_image_inline $self->{image};
113	root	1.7
114			$self->{internalformat} \|\|= $internalformat;
115	root	1.16	($dw, $dh) = @$self{qw(w h)};
116	root	1.1	}
117
118	root	1.16	my ($tw, $th) = ($dw, $dh);
119
120	root	1.14	defined $data or $self->{render_cb} or die; # some sanity check
121	root	1.1
122	root	1.16	$self->{minified} \|\|= [CFPlus::average $dw, $dh, $data]
123	root	1.1	if $self->{minify};
124
125	root	1.16	# 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	root	1.14
135	root	1.16	# now further decrease texture size until the
136			# card does accept it
137	root	1.14	while (!texture_valid_2d $self->{internalformat}, $tw, $th, $self->{format}, $self->{type}) {
138			# quarter the texture size
139			$tw >>= 1;
140			$th >>= 1;
141			}
142
143	root	1.18	# decide the amount of space used in the texture
144			my ($rw, $rh);
145	root	1.22	my ($ox, $oy); # area shift to lessen effetc of buggy opengl implementations (nvida, ati)
146	root	1.19	my $render;
147	root	1.18
148	root	1.16	if ($self->{render_cb}) {
149			# use only part of the texture
150			#$rw >>= 1 while $rw > $tw;
151			#$rh >>= 1 while $rh > $th;
152	root	1.18	$rw = min $dw, $tw;
153			$rh = min $dh, $th;
154	root	1.19	++$render;
155	root	1.16	} else {
156			if ($self->{wrap} \|\| $tw < $dw \|\| $th < $dh) {
157			# scale to the full texture size
158			($rw, $rh) = ($tw, $th);
159	root	1.19	++$render;
160	root	1.16	} else {
161			# pad
162			pad $data, $dw, $dh, $tw, $th;
163			($rw, $rh) = ($dw, $dh);
164			($dw, $dh) = ($tw, $th);
165			}
166			}
167
168	root	1.15	if ($render) {
169	root	1.23	$ox = int .5 * ($::WIDTH - $rw);
170			$oy = int .5 * ($::HEIGHT - $rh);
171	root	1.22
172			glViewport $ox, $oy, $tw, $th;
173	root	1.21	#glScissor 0, 0, $tw, $th;
174			#glEnable GL_SCISSOR_TEST;
175	root	1.14	glMatrixMode GL_PROJECTION;
176			glLoadIdentity;
177	root	1.16	glOrtho 0, $tw, 0, $th, -10000, 10000;
178	root	1.14	glMatrixMode GL_MODELVIEW;
179			glLoadIdentity;
180	root	1.1
181	root	1.14	if ($self->{render_cb}) {
182	root	1.16	glScale $rw / $dw, $rh / $dh;
183			$self->{render_cb}->($self, $rw, $rh);
184	root	1.14	} else {
185	root	1.20	glClearColor 0, 0, 0, 0;
186			glClear GL_COLOR_BUFFER_BIT;
187	root	1.16	glPixelZoom $tw / $dw, $th / $dh;
188	root	1.22	glRasterPos 0, 0;
189	root	1.16	glDrawPixels $dw, $dh,
190	root	1.14	$self->{format},
191			$self->{type},
192			$data;
193			glPixelZoom 1, 1;
194			}
195			}
196	root	1.1
197	root	1.14	glBindTexture GL_TEXTURE_2D, $self->{name} \|\|= glGenTexture;
198	root	1.1
199	root	1.2	if ($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, $GL_VERSION >= 1.2 ? GL_CLAMP_TO_EDGE : GL_CLAMP;
205			}
206	root	1.1
207	root	1.12	if ($::FAST \|\| $self->{nearest}) {
208	root	1.1	glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST;
209			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST;
210			} elsif ($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, $self->{mipmap};
216			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
217			glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR;
218			}
219
220			glGetError;
221
222	root	1.15	if ($render) {
223	root	1.14	glCopyTexImage2D GL_TEXTURE_2D, 0,
224			$self->{internalformat},
225	root	1.22	$ox, $oy,
226	root	1.14	$tw, $th,
227			0;
228			gl_check "copying to texture %dx%d if=%x",
229			$tw, $th, $self->{internalformat};
230	root	1.21
231			#glDisable GL_SCISSOR_TEST;
232	root	1.14	} else {
233	root	1.1	glTexImage2D GL_TEXTURE_2D, 0,
234			$self->{internalformat},
235	root	1.16	$dw, $dh,
236	root	1.1	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	root	1.14
244	root	1.16	$self->{s} = $rw / $tw;
245			$self->{t} = $rh / $th;
246	root	1.1	}
247
248	root	1.8	sub shutdown {
249			my ($self) = @_;
250
251	root	1.9	glDeleteTexture $self->{name}
252	root	1.8	if $self->{name};
253			}
254
255	root	1.1	sub DESTROY {
256			my ($self) = @_;
257
258			delete $TEXTURES{$self+0};
259
260	root	1.8	$self->shutdown;
261	root	1.1	}
262
263	root	1.11	$CFPlus::OpenGL::INIT_HOOK{"CFPlus::Texture"} = sub {
264	root	1.9	# 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	root	1.1	$_->upload
268			for values %TEXTURES;
269			};
270
271	root	1.11	$CFPlus::OpenGL::SHUTDOWN_HOOK{"CFPlus::Texture"} = sub {
272	root	1.8	$_->shutdown
273			for values %TEXTURES;
274			};
275
276	root	1.1	1;
277
278			=back
279
280			=head1 AUTHOR
281
282			Marc Lehmann <schmorp@schmorp.de>
283			http://home.schmorp.de/
284
285			=cut
286