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/cvs/cf.schmorp.de/Deliantra-Client/DC/Texture.pm
Revision: 1.39
Committed: Wed Jan 18 00:51:23 2012 UTC (12 years, 6 months ago) by root
Branch: MAIN
CVS Tags: HEAD
Changes since 1.38: +1 -1 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 =head1 NAME
2
3 DC::Texture - texture class for Deliantra-Client
4
5 =head1 SYNOPSIS
6
7 use DC::Texture;
8
9 =head1 DESCRIPTION
10
11 =over 4
12
13 =cut
14
15 package DC::Texture;
16
17 use common::sense;
18
19 use List::Util qw(max min);
20 use DC::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 }, $class;
34
35 DC::weaken ($TEXTURES{$self+0} = $self);
36
37 $self->upload
38 unless delete $self->{delay};
39
40 $self
41 }
42
43 sub new_from_image {
44 my ($class, $image, %arg) = @_;
45
46 Carp::confess "tried to create texture from undefined image"
47 unless defined $image;
48
49 $class->new (image => $image, internalformat => undef, %arg)
50 }
51
52 sub new_from_resource {
53 my ($class, $path, %arg) = @_;
54
55 $class->new (resource_path => $path, internalformat => undef, %arg)
56 }
57
58 #sub new_from_surface {
59 # my ($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 loading_done($$) {
93 my ($self, $data) = @_;
94
95 delete $self->{loading};
96 ++$self->{delete_image};
97 $self->{image} = $data;
98 $self->upload;
99 }
100
101 sub upload {
102 my ($self, $cb) = @_;
103
104 push @{ $self->{upload_done} }, $cb
105 if $cb;
106
107 return if $self->{loading};
108
109 unless ($GL_VERSION) {
110 $self->{want_upload} = -1;
111 return;
112 }
113
114 unless ($self->{name}) {
115 # $tw,$th texture
116 # $rw,$rh rendered/used size
117 # $dw,$dh $data
118
119 my ($data, $dw, $dh);
120
121 if (exists $self->{resource_path}) {
122 open my $fh, "<:raw", DC::find_rcfile $self->{resource_path};
123 local $/;
124 delete $self->{internalformat};
125 $self->{image} = <$fh>;
126 $self->{delete_image} = 1;
127 }
128
129 if (defined $self->{data}) {
130 $data = $self->{data};
131 ($dw, $dh) = @$self{qw(w h)};
132
133 } elsif ($self->{render_cb}) {
134 ($dw, $dh) = @$self{qw(w h)};
135
136 } elsif (defined $self->{image}) {
137 ($self->{w}, $self->{h}, $data, my $internalformat, $self->{format}, $self->{type})
138 = DC::load_image_inline $self->{image};
139
140 $self->{internalformat} ||= $internalformat;
141 ($dw, $dh) = @$self{qw(w h)};
142
143 delete $self->{image} if delete $self->{delete_image};
144
145 } elsif (defined $self->{tile}) {
146 ++$self->{loading};
147 return DC::DB::get tilecache => $self->{tile}, sub {
148 $self->loading_done ($_[0]);
149 };
150
151 } elsif (defined $self->{path}) {
152 ++$self->{loading};
153 return DC::DB::read_file $self->{path}, sub {
154 $self->loading_done ($_[0]);
155 };
156
157 } else {
158 Carp::confess "tried to create texture that is not data, render or image";
159 }
160
161 my ($tw, $th) = ($dw, $dh);
162
163 defined $data or $self->{render_cb} or die; # some sanity check
164
165 $self->{minified} ||= [DC::average $dw, $dh, $data]
166 if $self->{minify};
167
168 # against rather broken cards we enforce a maximum texture size
169 $tw = min $MAX_W, $tw;
170 $th = min $MAX_H, $th;
171
172 # if only pot-textures are allowed, pot'ify tw/th
173 unless ($GL_NPOT) {
174 $tw = DC::minpot $tw;
175 $th = DC::minpot $th;
176 }
177
178 # now further decrease texture size until the
179 # card does accept it
180 while (!texture_valid_2d $self->{internalformat}, $tw, $th, $self->{format}, $self->{type}) {
181 # quarter the texture size
182 $tw >>= 1;
183 $th >>= 1;
184 }
185
186 # decide the amount of space used in the texture
187 my ($rw, $rh);
188 my ($ox, $oy); # area shift to lessen effect of buggy opengl implementations (nvida, ati)
189 my $render;
190
191 if ($self->{render_cb}) {
192 # use only part of the texture
193 #$rw >>= 1 while $rw > $tw;
194 #$rh >>= 1 while $rh > $th;
195 $rw = min $dw, $tw;
196 $rh = min $dh, $th;
197 ++$render;
198 } else {
199 if ($self->{wrap} || $tw < $dw || $th < $dh) {
200 # scale to the full texture size
201 ($rw, $rh) = ($tw, $th);
202 ++$render;
203 } else {
204 # pad
205 pad $data, $dw, $dh, $tw, $th;
206 ($rw, $rh) = ($dw, $dh);
207 ($dw, $dh) = ($tw, $th);
208 }
209 }
210
211 if ($render) {
212 $ox = int .5 * ($::WIDTH - $rw);
213 $oy = int .5 * ($::HEIGHT - $rh);
214
215 glViewport $ox, $oy, $tw, $th;
216 #glScissor 0, 0, $tw, $th;
217 #glEnable GL_SCISSOR_TEST;
218 glMatrixMode GL_PROJECTION;
219 glLoadIdentity;
220 glOrtho 0, $tw, 0, $th, -10000, 10000;
221 glMatrixMode GL_MODELVIEW;
222 glLoadIdentity;
223
224 if ($self->{render_cb}) {
225 glScale $rw / $dw, $rh / $dh;
226 $self->{render_cb}->($self, $rw, $rh);
227 } else {
228 glClearColor 0, 0, 0, 0;
229 glClear GL_COLOR_BUFFER_BIT;
230 glPixelZoom $tw / $dw, $th / $dh;
231 glRasterPos 0, 0;
232 glDrawPixels $dw, $dh,
233 $self->{format},
234 $self->{type},
235 $data;
236 glPixelZoom 1, 1;
237 }
238 }
239
240 if ((my $name = delete $self->{want_upload}) > 0) {
241 $self->{name} = $name;
242 }
243
244 glBindTexture GL_TEXTURE_2D, $self->{name} ||= glGenTexture;
245
246 if ($self->{wrap}) {
247 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT;
248 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT;
249 } else {
250 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, $GL_VERSION >= 1.2 ? GL_CLAMP_TO_EDGE : GL_CLAMP;
251 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, $GL_VERSION >= 1.2 ? GL_CLAMP_TO_EDGE : GL_CLAMP;
252 }
253
254 if ($::FAST || $self->{nearest}) {
255 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST;
256 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST;
257 } elsif ($self->{mipmap} && $GL_VERSION >= 1.4) {
258 glTexParameter GL_TEXTURE_2D, GL_GENERATE_MIPMAP, 1;
259 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
260 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR;
261 } else {
262 glTexParameter GL_TEXTURE_2D, GL_GENERATE_MIPMAP, $self->{mipmap};
263 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR;
264 glTexParameter GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR;
265 }
266
267 glGetError;
268
269 if ($render) {
270 glCopyTexImage2D GL_TEXTURE_2D, 0,
271 $self->{internalformat},
272 $ox, $oy,
273 $tw, $th,
274 0;
275 gl_check "copying to texture %dx%d if=%x",
276 $tw, $th, $self->{internalformat};
277
278 #glDisable GL_SCISSOR_TEST;
279 } else {
280 my $if = $self->{internalformat};
281
282 if ($GL_COMPRESS && $::CFG->{texture_compression}) {
283 if ($if == GL_RGB) {
284 $if = GL_COMPRESSED_RGB_ARB;
285 } elsif ($if == GL_RGBA) {
286 $if = GL_COMPRESSED_RGBA_ARB;
287 }
288 }
289
290 glTexImage2D GL_TEXTURE_2D, 0,
291 $if,
292 $dw, $dh,
293 0,
294 $self->{format},
295 $self->{type},
296 $data;
297 gl_check "uploading texture %dx%d if=%x f=%x t=%x",
298 $tw, $th, $self->{internalformat}, $self->{format}, $self->{type};
299 }
300
301 $self->{s} = $rw / $tw;
302 $self->{t} = $rh / $th;
303
304 if ($self->{tile}) {
305 $::MAP->set_texture ($self->{tile}, @$self{qw(name w h s t)}, @{$self->{minified}})
306 if $::MAP;
307 $::MAPWIDGET->update
308 if $::MAPWIDGET;
309 }
310 }
311
312 $_->($self)
313 for @{ (delete $self->{upload_done}) || [] };
314 }
315
316 sub unload {
317 my ($self) = @_;
318
319 glDeleteTexture delete $self->{name}
320 if $self->{name};
321 }
322
323 sub DESTROY {
324 my ($self) = @_;
325
326 delete $TEXTURES{$self+0};
327
328 $self->unload;
329 }
330
331 $DC::OpenGL::INIT_HOOK{"DC::Texture"} = sub {
332 for my $tex (values %TEXTURES) {
333 if (my $name = $tex->{want_upload}) {
334 $tex->upload;
335
336 if ($tex->{loading} && $name > 0) {
337 # if loading is delayed we still have to allocate the texture name
338 glBindTexture GL_TEXTURE_2D, $name;
339 glTexImage2D GL_TEXTURE_2D, 0, GL_ALPHA, 0, 0, 0, GL_ALPHA, GL_UNSIGNED_BYTE;
340 }
341 }
342 }
343 };
344
345 $DC::OpenGL::SHUTDOWN_HOOK{"DC::Texture"} = sub {
346 for (values %TEXTURES) {
347 next unless $_->{name};
348 $_->{want_upload} = $_->{name};
349 $_->unload;
350 }
351 };
352
353 1;
354
355 =back
356
357 =head1 AUTHOR
358
359 Marc Lehmann <schmorp@schmorp.de>
360 http://home.schmorp.de/
361
362 =cut
363