1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
|
/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <sstream>
#include <algorithm>
#include <iterator>
#include "background.h"
#include "camera.h"
#include "film.h"
#include "graph.h"
#include "integrator.h"
#include "light.h"
#include "mesh.h"
#include "nodes.h"
#include "object.h"
#include "shader.h"
#include "scene.h"
#include "subd_mesh.h"
#include "subd_patch.h"
#include "subd_split.h"
#include "util_debug.h"
#include "util_foreach.h"
#include "util_path.h"
#include "util_transform.h"
#include "util_xml.h"
#include "cycles_xml.h"
CCL_NAMESPACE_BEGIN
/* XML reading state */
struct XMLReadState {
Scene *scene; /* scene pointer */
Transform tfm; /* current transform state */
bool smooth; /* smooth normal state */
int shader; /* current shader */
string base; /* base path to current file*/
float dicing_rate; /* current dicing rate */
Mesh::DisplacementMethod displacement_method;
XMLReadState()
: scene(NULL),
smooth(false),
shader(0),
dicing_rate(0.0f),
displacement_method(Mesh::DISPLACE_BUMP)
{
tfm = transform_identity();
}
};
/* Attribute Reading */
static bool xml_read_bool(bool *value, pugi::xml_node node, const char *name)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr) {
*value = (string_iequals(attr.value(), "true")) || (atoi(attr.value()) != 0);
return true;
}
return false;
}
static bool xml_read_int(int *value, pugi::xml_node node, const char *name)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr) {
*value = atoi(attr.value());
return true;
}
return false;
}
static bool xml_read_int_array(vector<int>& value, pugi::xml_node node, const char *name)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr) {
vector<string> tokens;
string_split(tokens, attr.value());
foreach(const string& token, tokens)
value.push_back(atoi(token.c_str()));
return true;
}
return false;
}
static bool xml_read_float(float *value, pugi::xml_node node, const char *name)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr) {
*value = (float)atof(attr.value());
return true;
}
return false;
}
static bool xml_read_float_array(vector<float>& value, pugi::xml_node node, const char *name)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr) {
vector<string> tokens;
string_split(tokens, attr.value());
foreach(const string& token, tokens)
value.push_back((float)atof(token.c_str()));
return true;
}
return false;
}
static bool xml_read_float3(float3 *value, pugi::xml_node node, const char *name)
{
vector<float> array;
if(xml_read_float_array(array, node, name) && array.size() == 3) {
*value = make_float3(array[0], array[1], array[2]);
return true;
}
return false;
}
static bool xml_read_float3_array(vector<float3>& value, pugi::xml_node node, const char *name)
{
vector<float> array;
if(xml_read_float_array(array, node, name)) {
for(size_t i = 0; i < array.size(); i += 3)
value.push_back(make_float3(array[i+0], array[i+1], array[i+2]));
return true;
}
return false;
}
static bool xml_read_float4(float4 *value, pugi::xml_node node, const char *name)
{
vector<float> array;
if(xml_read_float_array(array, node, name) && array.size() == 4) {
*value = make_float4(array[0], array[1], array[2], array[3]);
return true;
}
return false;
}
static bool xml_read_string(string *str, pugi::xml_node node, const char *name)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr) {
*str = attr.value();
return true;
}
return false;
}
static bool xml_read_ustring(ustring *str, pugi::xml_node node, const char *name)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr) {
*str = ustring(attr.value());
return true;
}
return false;
}
static bool xml_equal_string(pugi::xml_node node, const char *name, const char *value)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr)
return string_iequals(attr.value(), value);
return false;
}
static bool xml_read_enum(ustring *str, ShaderEnum& enm, pugi::xml_node node, const char *name)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr) {
ustring ustr(attr.value());
if(enm.exists(ustr)) {
*str = ustr;
return true;
}
else
fprintf(stderr, "Unknown value \"%s\" for attribute \"%s\".\n", ustr.c_str(), name);
}
return false;
}
static ShaderSocketType xml_read_socket_type(pugi::xml_node node, const char *name)
{
pugi::xml_attribute attr = node.attribute(name);
if(attr) {
string value = attr.value();
if(string_iequals(value, "float"))
return SHADER_SOCKET_FLOAT;
else if(string_iequals(value, "int"))
return SHADER_SOCKET_INT;
else if(string_iequals(value, "color"))
return SHADER_SOCKET_COLOR;
else if(string_iequals(value, "vector"))
return SHADER_SOCKET_VECTOR;
else if(string_iequals(value, "point"))
return SHADER_SOCKET_POINT;
else if(string_iequals(value, "normal"))
return SHADER_SOCKET_NORMAL;
else if(string_iequals(value, "closure color"))
return SHADER_SOCKET_CLOSURE;
else if(string_iequals(value, "string"))
return SHADER_SOCKET_STRING;
else
fprintf(stderr, "Unknown shader socket type \"%s\" for attribute \"%s\".\n", value.c_str(), name);
}
return SHADER_SOCKET_UNDEFINED;
}
/* Film */
static void xml_read_film(const XMLReadState& state, pugi::xml_node node)
{
Film *film = state.scene->film;
xml_read_float(&film->exposure, node, "exposure");
/* ToDo: Filter Type */
xml_read_float(&film->filter_width, node, "filter_width");
}
/* Integrator */
static void xml_read_integrator(const XMLReadState& state, pugi::xml_node node)
{
Integrator *integrator = state.scene->integrator;
/* Branched Path */
bool branched = false;
xml_read_bool(&branched, node, "branched");
if(branched) {
integrator->method = Integrator::BRANCHED_PATH;
xml_read_int(&integrator->diffuse_samples, node, "diffuse_samples");
xml_read_int(&integrator->glossy_samples, node, "glossy_samples");
xml_read_int(&integrator->transmission_samples, node, "transmission_samples");
xml_read_int(&integrator->ao_samples, node, "ao_samples");
xml_read_int(&integrator->mesh_light_samples, node, "mesh_light_samples");
xml_read_int(&integrator->subsurface_samples, node, "subsurface_samples");
xml_read_int(&integrator->volume_samples, node, "volume_samples");
xml_read_bool(&integrator->sample_all_lights_direct, node, "sample_all_lights_direct");
xml_read_bool(&integrator->sample_all_lights_indirect, node, "sample_all_lights_indirect");
}
/* Bounces */
xml_read_int(&integrator->min_bounce, node, "min_bounce");
xml_read_int(&integrator->max_bounce, node, "max_bounce");
xml_read_int(&integrator->max_diffuse_bounce, node, "max_diffuse_bounce");
xml_read_int(&integrator->max_glossy_bounce, node, "max_glossy_bounce");
xml_read_int(&integrator->max_transmission_bounce, node, "max_transmission_bounce");
xml_read_int(&integrator->max_volume_bounce, node, "max_volume_bounce");
/* Transparency */
xml_read_int(&integrator->transparent_min_bounce, node, "transparent_min_bounce");
xml_read_int(&integrator->transparent_max_bounce, node, "transparent_max_bounce");
xml_read_bool(&integrator->transparent_shadows, node, "transparent_shadows");
/* Volume */
xml_read_float(&integrator->volume_step_size, node, "volume_step_size");
xml_read_int(&integrator->volume_max_steps, node, "volume_max_steps");
/* Various Settings */
xml_read_bool(&integrator->caustics_reflective, node, "caustics_reflective");
xml_read_bool(&integrator->caustics_refractive, node, "caustics_refractive");
xml_read_float(&integrator->filter_glossy, node, "filter_glossy");
xml_read_int(&integrator->seed, node, "seed");
xml_read_float(&integrator->sample_clamp_direct, node, "sample_clamp_direct");
xml_read_float(&integrator->sample_clamp_indirect, node, "sample_clamp_indirect");
}
/* Camera */
static void xml_read_camera(const XMLReadState& state, pugi::xml_node node)
{
Camera *cam = state.scene->camera;
xml_read_int(&cam->width, node, "width");
xml_read_int(&cam->height, node, "height");
if(xml_read_float(&cam->fov, node, "fov"))
cam->fov = DEG2RADF(cam->fov);
xml_read_float(&cam->nearclip, node, "nearclip");
xml_read_float(&cam->farclip, node, "farclip");
xml_read_float(&cam->aperturesize, node, "aperturesize"); // 0.5*focallength/fstop
xml_read_float(&cam->focaldistance, node, "focaldistance");
xml_read_float(&cam->shuttertime, node, "shuttertime");
xml_read_float(&cam->aperture_ratio, node, "aperture_ratio");
if(xml_equal_string(node, "type", "orthographic"))
cam->type = CAMERA_ORTHOGRAPHIC;
else if(xml_equal_string(node, "type", "perspective"))
cam->type = CAMERA_PERSPECTIVE;
else if(xml_equal_string(node, "type", "panorama"))
cam->type = CAMERA_PANORAMA;
if(xml_equal_string(node, "panorama_type", "equirectangular"))
cam->panorama_type = PANORAMA_EQUIRECTANGULAR;
else if(xml_equal_string(node, "panorama_type", "fisheye_equidistant"))
cam->panorama_type = PANORAMA_FISHEYE_EQUIDISTANT;
else if(xml_equal_string(node, "panorama_type", "fisheye_equisolid"))
cam->panorama_type = PANORAMA_FISHEYE_EQUISOLID;
xml_read_float(&cam->fisheye_fov, node, "fisheye_fov");
xml_read_float(&cam->fisheye_lens, node, "fisheye_lens");
xml_read_bool(&cam->use_spherical_stereo, node, "use_spherical_stereo");
xml_read_float(&cam->interocular_distance, node, "interocular_distance");
xml_read_float(&cam->convergence_distance, node, "convergence_distance");
xml_read_float(&cam->sensorwidth, node, "sensorwidth");
xml_read_float(&cam->sensorheight, node, "sensorheight");
cam->matrix = state.tfm;
cam->need_update = true;
cam->update();
}
/* Shader */
static string xml_socket_name(const char *name)
{
string sname = name;
size_t i;
while((i = sname.find(" ")) != string::npos)
sname.replace(i, 1, "");
return sname;
}
static void xml_read_shader_graph(const XMLReadState& state, Shader *shader, pugi::xml_node graph_node)
{
ShaderGraph *graph = new ShaderGraph();
map<string, ShaderNode*> nodemap;
nodemap["output"] = graph->output();
for(pugi::xml_node node = graph_node.first_child(); node; node = node.next_sibling()) {
ShaderNode *snode = NULL;
/* ToDo: Add missing nodes
* RGBCurvesNode, VectorCurvesNode, RGBRampNode and ConvertNode (RGB -> BW).
*/
if(string_iequals(node.name(), "image_texture")) {
ImageTextureNode *img = new ImageTextureNode();
xml_read_string(&img->filename, node, "src");
img->filename = path_join(state.base, img->filename);
xml_read_enum(&img->color_space, ImageTextureNode::color_space_enum, node, "color_space");
xml_read_enum(&img->projection, ImageTextureNode::projection_enum, node, "projection");
xml_read_float(&img->projection_blend, node, "projection_blend");
/* ToDo: Interpolation */
snode = img;
}
else if(string_iequals(node.name(), "environment_texture")) {
EnvironmentTextureNode *env = new EnvironmentTextureNode();
xml_read_string(&env->filename, node, "src");
env->filename = path_join(state.base, env->filename);
xml_read_enum(&env->color_space, EnvironmentTextureNode::color_space_enum, node, "color_space");
xml_read_enum(&env->projection, EnvironmentTextureNode::projection_enum, node, "projection");
snode = env;
}
else if(string_iequals(node.name(), "osl_shader")) {
OSLScriptNode *osl = new OSLScriptNode();
/* Source */
xml_read_string(&osl->filepath, node, "src");
if(path_is_relative(osl->filepath)) {
osl->filepath = path_join(state.base, osl->filepath);
}
/* Generate inputs/outputs from node sockets
*
* Note: ShaderInput/ShaderOutput store shallow string copies only!
* So we register them as ustring to ensure the pointer stays valid. */
/* read input values */
for(pugi::xml_node param = node.first_child(); param; param = param.next_sibling()) {
if(string_iequals(param.name(), "input")) {
string name;
if(!xml_read_string(&name, param, "name"))
continue;
ShaderSocketType type = xml_read_socket_type(param, "type");
if(type == SHADER_SOCKET_UNDEFINED)
continue;
osl->add_input(ustring(name).c_str(), type);
}
else if(string_iequals(param.name(), "output")) {
string name;
if(!xml_read_string(&name, param, "name"))
continue;
ShaderSocketType type = xml_read_socket_type(param, "type");
if(type == SHADER_SOCKET_UNDEFINED)
continue;
osl->add_output(ustring(name).c_str(), type);
}
}
snode = osl;
}
else if(string_iequals(node.name(), "sky_texture")) {
SkyTextureNode *sky = new SkyTextureNode();
xml_read_enum(&sky->type, SkyTextureNode::type_enum, node, "type");
xml_read_float3(&sky->sun_direction, node, "sun_direction");
xml_read_float(&sky->turbidity, node, "turbidity");
xml_read_float(&sky->ground_albedo, node, "ground_albedo");
snode = sky;
}
else if(string_iequals(node.name(), "noise_texture")) {
snode = new NoiseTextureNode();
}
else if(string_iequals(node.name(), "checker_texture")) {
snode = new CheckerTextureNode();
}
else if(string_iequals(node.name(), "brick_texture")) {
BrickTextureNode *brick = new BrickTextureNode();
xml_read_float(&brick->offset, node, "offset");
xml_read_int(&brick->offset_frequency, node, "offset_frequency");
xml_read_float(&brick->squash, node, "squash");
xml_read_int(&brick->squash_frequency, node, "squash_frequency");
snode = brick;
}
else if(string_iequals(node.name(), "gradient_texture")) {
GradientTextureNode *blend = new GradientTextureNode();
xml_read_enum(&blend->type, GradientTextureNode::type_enum, node, "type");
snode = blend;
}
else if(string_iequals(node.name(), "voronoi_texture")) {
VoronoiTextureNode *voronoi = new VoronoiTextureNode();
xml_read_enum(&voronoi->coloring, VoronoiTextureNode::coloring_enum, node, "coloring");
snode = voronoi;
}
else if(string_iequals(node.name(), "musgrave_texture")) {
MusgraveTextureNode *musgrave = new MusgraveTextureNode();
xml_read_enum(&musgrave->type, MusgraveTextureNode::type_enum, node, "type");
snode = musgrave;
}
else if(string_iequals(node.name(), "magic_texture")) {
MagicTextureNode *magic = new MagicTextureNode();
xml_read_int(&magic->depth, node, "depth");
snode = magic;
}
else if(string_iequals(node.name(), "wave_texture")) {
WaveTextureNode *wave = new WaveTextureNode();
xml_read_enum(&wave->type, WaveTextureNode::type_enum, node, "type");
xml_read_enum(&wave->profile, WaveTextureNode::profile_enum, node, "profile");
snode = wave;
}
else if(string_iequals(node.name(), "normal")) {
NormalNode *normal = new NormalNode();
xml_read_float3(&normal->direction, node, "direction");
snode = normal;
}
else if(string_iequals(node.name(), "bump")) {
BumpNode *bump = new BumpNode();
xml_read_bool(&bump->invert, node, "invert");
snode = bump;
}
else if(string_iequals(node.name(), "mapping")) {
snode = new MappingNode();
}
else if(string_iequals(node.name(), "anisotropic_bsdf")) {
AnisotropicBsdfNode *aniso = new AnisotropicBsdfNode();
xml_read_enum(&aniso->distribution, AnisotropicBsdfNode::distribution_enum, node, "distribution");
snode = aniso;
}
else if(string_iequals(node.name(), "diffuse_bsdf")) {
snode = new DiffuseBsdfNode();
}
else if(string_iequals(node.name(), "translucent_bsdf")) {
snode = new TranslucentBsdfNode();
}
else if(string_iequals(node.name(), "transparent_bsdf")) {
snode = new TransparentBsdfNode();
}
else if(string_iequals(node.name(), "velvet_bsdf")) {
snode = new VelvetBsdfNode();
}
else if(string_iequals(node.name(), "toon_bsdf")) {
ToonBsdfNode *toon = new ToonBsdfNode();
xml_read_enum(&toon->component, ToonBsdfNode::component_enum, node, "component");
snode = toon;
}
else if(string_iequals(node.name(), "glossy_bsdf")) {
GlossyBsdfNode *glossy = new GlossyBsdfNode();
xml_read_enum(&glossy->distribution, GlossyBsdfNode::distribution_enum, node, "distribution");
snode = glossy;
}
else if(string_iequals(node.name(), "glass_bsdf")) {
GlassBsdfNode *diel = new GlassBsdfNode();
xml_read_enum(&diel->distribution, GlassBsdfNode::distribution_enum, node, "distribution");
snode = diel;
}
else if(string_iequals(node.name(), "refraction_bsdf")) {
RefractionBsdfNode *diel = new RefractionBsdfNode();
xml_read_enum(&diel->distribution, RefractionBsdfNode::distribution_enum, node, "distribution");
snode = diel;
}
else if(string_iequals(node.name(), "hair_bsdf")) {
HairBsdfNode *hair = new HairBsdfNode();
xml_read_enum(&hair->component, HairBsdfNode::component_enum, node, "component");
snode = hair;
}
else if(string_iequals(node.name(), "emission")) {
snode = new EmissionNode();
}
else if(string_iequals(node.name(), "ambient_occlusion")) {
snode = new AmbientOcclusionNode();
}
else if(string_iequals(node.name(), "background")) {
snode = new BackgroundNode();
}
else if(string_iequals(node.name(), "holdout")) {
snode = new HoldoutNode();
}
else if(string_iequals(node.name(), "absorption_volume")) {
snode = new AbsorptionVolumeNode();
}
else if(string_iequals(node.name(), "scatter_volume")) {
snode = new ScatterVolumeNode();
}
else if(string_iequals(node.name(), "subsurface_scattering")) {
SubsurfaceScatteringNode *sss = new SubsurfaceScatteringNode();
string falloff;
xml_read_string(&falloff, node, "falloff");
if(falloff == "cubic")
sss->closure = CLOSURE_BSSRDF_CUBIC_ID;
else if(falloff == "gaussian")
sss->closure = CLOSURE_BSSRDF_GAUSSIAN_ID;
else /*if(falloff == "burley")*/
sss->closure = CLOSURE_BSSRDF_BURLEY_ID;
snode = sss;
}
else if(string_iequals(node.name(), "geometry")) {
snode = new GeometryNode();
}
else if(string_iequals(node.name(), "texture_coordinate")) {
snode = new TextureCoordinateNode();
}
else if(string_iequals(node.name(), "light_path")) {
snode = new LightPathNode();
}
else if(string_iequals(node.name(), "light_falloff")) {
snode = new LightFalloffNode();
}
else if(string_iequals(node.name(), "object_info")) {
snode = new ObjectInfoNode();
}
else if(string_iequals(node.name(), "particle_info")) {
snode = new ParticleInfoNode();
}
else if(string_iequals(node.name(), "hair_info")) {
snode = new HairInfoNode();
}
else if(string_iequals(node.name(), "value")) {
ValueNode *value = new ValueNode();
xml_read_float(&value->value, node, "value");
snode = value;
}
else if(string_iequals(node.name(), "color")) {
ColorNode *color = new ColorNode();
xml_read_float3(&color->value, node, "value");
snode = color;
}
else if(string_iequals(node.name(), "mix_closure")) {
snode = new MixClosureNode();
}
else if(string_iequals(node.name(), "add_closure")) {
snode = new AddClosureNode();
}
else if(string_iequals(node.name(), "invert")) {
snode = new InvertNode();
}
else if(string_iequals(node.name(), "mix")) {
/* ToDo: Tag Mix case for optimization */
MixNode *mix = new MixNode();
xml_read_enum(&mix->type, MixNode::type_enum, node, "type");
xml_read_bool(&mix->use_clamp, node, "use_clamp");
snode = mix;
}
else if(string_iequals(node.name(), "gamma")) {
snode = new GammaNode();
}
else if(string_iequals(node.name(), "brightness")) {
snode = new BrightContrastNode();
}
else if(string_iequals(node.name(), "combine_rgb")) {
snode = new CombineRGBNode();
}
else if(string_iequals(node.name(), "separate_rgb")) {
snode = new SeparateRGBNode();
}
else if(string_iequals(node.name(), "combine_hsv")) {
snode = new CombineHSVNode();
}
else if(string_iequals(node.name(), "separate_hsv")) {
snode = new SeparateHSVNode();
}
else if(string_iequals(node.name(), "combine_xyz")) {
snode = new CombineXYZNode();
}
else if(string_iequals(node.name(), "separate_xyz")) {
snode = new SeparateXYZNode();
}
else if(string_iequals(node.name(), "hsv")) {
snode = new HSVNode();
}
else if(string_iequals(node.name(), "wavelength")) {
snode = new WavelengthNode();
}
else if(string_iequals(node.name(), "blackbody")) {
snode = new BlackbodyNode();
}
else if(string_iequals(node.name(), "attribute")) {
AttributeNode *attr = new AttributeNode();
xml_read_ustring(&attr->attribute, node, "attribute");
snode = attr;
}
else if(string_iequals(node.name(), "uv_map")) {
UVMapNode *uvm = new UVMapNode();
xml_read_ustring(&uvm->attribute, node, "uv_map");
snode = uvm;
}
else if(string_iequals(node.name(), "camera")) {
snode = new CameraNode();
}
else if(string_iequals(node.name(), "fresnel")) {
snode = new FresnelNode();
}
else if(string_iequals(node.name(), "layer_weight")) {
snode = new LayerWeightNode();
}
else if(string_iequals(node.name(), "wireframe")) {
WireframeNode *wire = new WireframeNode;
xml_read_bool(&wire->use_pixel_size, node, "use_pixel_size");
snode = wire;
}
else if(string_iequals(node.name(), "normal_map")) {
NormalMapNode *nmap = new NormalMapNode;
xml_read_ustring(&nmap->attribute, node, "attribute");
xml_read_enum(&nmap->space, NormalMapNode::space_enum, node, "space");
snode = nmap;
}
else if(string_iequals(node.name(), "tangent")) {
TangentNode *tangent = new TangentNode;
xml_read_ustring(&tangent->attribute, node, "attribute");
xml_read_enum(&tangent->direction_type, TangentNode::direction_type_enum, node, "direction_type");
xml_read_enum(&tangent->axis, TangentNode::axis_enum, node, "axis");
snode = tangent;
}
else if(string_iequals(node.name(), "math")) {
MathNode *math = new MathNode();
xml_read_enum(&math->type, MathNode::type_enum, node, "type");
xml_read_bool(&math->use_clamp, node, "use_clamp");
snode = math;
}
else if(string_iequals(node.name(), "vector_math")) {
VectorMathNode *vmath = new VectorMathNode();
xml_read_enum(&vmath->type, VectorMathNode::type_enum, node, "type");
snode = vmath;
}
else if(string_iequals(node.name(), "vector_transform")) {
VectorTransformNode *vtransform = new VectorTransformNode();
xml_read_enum(&vtransform->type, VectorTransformNode::type_enum, node, "type");
xml_read_enum(&vtransform->convert_from, VectorTransformNode::convert_space_enum, node, "convert_from");
xml_read_enum(&vtransform->convert_to, VectorTransformNode::convert_space_enum, node, "convert_to");
snode = vtransform;
}
else if(string_iequals(node.name(), "connect")) {
/* connect nodes */
vector<string> from_tokens, to_tokens;
string_split(from_tokens, node.attribute("from").value());
string_split(to_tokens, node.attribute("to").value());
if(from_tokens.size() == 2 && to_tokens.size() == 2) {
/* find nodes and sockets */
ShaderOutput *output = NULL;
ShaderInput *input = NULL;
if(nodemap.find(from_tokens[0]) != nodemap.end()) {
ShaderNode *fromnode = nodemap[from_tokens[0]];
foreach(ShaderOutput *out, fromnode->outputs)
if(string_iequals(xml_socket_name(out->name), from_tokens[1]))
output = out;
if(!output)
fprintf(stderr, "Unknown output socket name \"%s\" on \"%s\".\n", from_tokens[1].c_str(), from_tokens[0].c_str());
}
else
fprintf(stderr, "Unknown shader node name \"%s\".\n", from_tokens[0].c_str());
if(nodemap.find(to_tokens[0]) != nodemap.end()) {
ShaderNode *tonode = nodemap[to_tokens[0]];
foreach(ShaderInput *in, tonode->inputs)
if(string_iequals(xml_socket_name(in->name), to_tokens[1]))
input = in;
if(!input)
fprintf(stderr, "Unknown input socket name \"%s\" on \"%s\".\n", to_tokens[1].c_str(), to_tokens[0].c_str());
}
else
fprintf(stderr, "Unknown shader node name \"%s\".\n", to_tokens[0].c_str());
/* connect */
if(output && input)
graph->connect(output, input);
}
else
fprintf(stderr, "Invalid from or to value for connect node.\n");
}
else
fprintf(stderr, "Unknown shader node \"%s\".\n", node.name());
if(snode) {
/* add to graph */
graph->add(snode);
/* add to map for name lookups */
string name = "";
xml_read_string(&name, node, "name");
nodemap[name] = snode;
/* read input values */
for(pugi::xml_attribute attr = node.first_attribute(); attr; attr = attr.next_attribute()) {
foreach(ShaderInput *in, snode->inputs) {
if(string_iequals(in->name, attr.name())) {
switch(in->type) {
case SHADER_SOCKET_FLOAT:
case SHADER_SOCKET_INT:
xml_read_float(&in->value.x, node, attr.name());
break;
case SHADER_SOCKET_COLOR:
case SHADER_SOCKET_VECTOR:
case SHADER_SOCKET_POINT:
case SHADER_SOCKET_NORMAL:
xml_read_float3(&in->value, node, attr.name());
break;
case SHADER_SOCKET_STRING:
xml_read_ustring( &in->value_string, node, attr.name() );
break;
default:
break;
}
}
}
}
}
}
shader->set_graph(graph);
shader->tag_update(state.scene);
}
static void xml_read_shader(const XMLReadState& state, pugi::xml_node node)
{
Shader *shader = new Shader();
xml_read_string(&shader->name, node, "name");
xml_read_bool(&shader->use_mis, node, "use_mis");
xml_read_bool(&shader->use_transparent_shadow, node, "use_transparent_shadow");
/* Volume */
xml_read_bool(&shader->heterogeneous_volume, node, "heterogeneous_volume");
xml_read_int(&shader->volume_interpolation_method, node, "volume_interpolation_method");
if(xml_equal_string(node, "volume_sampling_method", "distance"))
shader->volume_sampling_method = VOLUME_SAMPLING_DISTANCE;
else if(xml_equal_string(node, "volume_sampling_method", "equiangular"))
shader->volume_sampling_method = VOLUME_SAMPLING_EQUIANGULAR;
else if(xml_equal_string(node, "volume_sampling_method", "multiple_importance"))
shader->volume_sampling_method = VOLUME_SAMPLING_MULTIPLE_IMPORTANCE;
xml_read_shader_graph(state, shader, node);
state.scene->shaders.push_back(shader);
}
/* Background */
static void xml_read_background(const XMLReadState& state, pugi::xml_node node)
{
/* Background Settings */
Background *bg = state.scene->background;
xml_read_float(&bg->ao_distance, node, "ao_distance");
xml_read_float(&bg->ao_factor, node, "ao_factor");
xml_read_bool(&bg->transparent, node, "transparent");
/* Background Shader */
Shader *shader = state.scene->shaders[state.scene->default_background];
xml_read_bool(&shader->heterogeneous_volume, node, "heterogeneous_volume");
xml_read_int(&shader->volume_interpolation_method, node, "volume_interpolation_method");
if(xml_equal_string(node, "volume_sampling_method", "distance"))
shader->volume_sampling_method = VOLUME_SAMPLING_DISTANCE;
else if(xml_equal_string(node, "volume_sampling_method", "equiangular"))
shader->volume_sampling_method = VOLUME_SAMPLING_EQUIANGULAR;
else if(xml_equal_string(node, "volume_sampling_method", "multiple_importance"))
shader->volume_sampling_method = VOLUME_SAMPLING_MULTIPLE_IMPORTANCE;
xml_read_shader_graph(state, shader, node);
}
/* Mesh */
static Mesh *xml_add_mesh(Scene *scene, const Transform& tfm)
{
/* create mesh */
Mesh *mesh = new Mesh();
scene->meshes.push_back(mesh);
/* create object*/
Object *object = new Object();
object->mesh = mesh;
object->tfm = tfm;
scene->objects.push_back(object);
return mesh;
}
static void xml_read_mesh(const XMLReadState& state, pugi::xml_node node)
{
/* add mesh */
Mesh *mesh = xml_add_mesh(state.scene, state.tfm);
mesh->used_shaders.push_back(state.shader);
/* read state */
int shader = state.shader;
bool smooth = state.smooth;
mesh->displacement_method = state.displacement_method;
/* read vertices and polygons, RIB style */
vector<float3> P;
vector<float> UV;
vector<int> verts, nverts;
xml_read_float3_array(P, node, "P");
xml_read_int_array(verts, node, "verts");
xml_read_int_array(nverts, node, "nverts");
if(xml_equal_string(node, "subdivision", "catmull-clark")) {
/* create subd mesh */
SubdMesh sdmesh;
/* create subd vertices */
for(size_t i = 0; i < P.size(); i++)
sdmesh.add_vert(P[i]);
/* create subd faces */
int index_offset = 0;
for(size_t i = 0; i < nverts.size(); i++) {
if(nverts[i] == 4) {
int v0 = verts[index_offset + 0];
int v1 = verts[index_offset + 1];
int v2 = verts[index_offset + 2];
int v3 = verts[index_offset + 3];
sdmesh.add_face(v0, v1, v2, v3);
}
else {
for(int j = 0; j < nverts[i]-2; j++) {
int v0 = verts[index_offset];
int v1 = verts[index_offset + j + 1];
int v2 = verts[index_offset + j + 2];
sdmesh.add_face(v0, v1, v2);
}
}
index_offset += nverts[i];
}
/* finalize subd mesh */
sdmesh.finish();
/* parameters */
SubdParams sdparams(mesh, shader, smooth);
xml_read_float(&sdparams.dicing_rate, node, "dicing_rate");
DiagSplit dsplit(sdparams);
sdmesh.tessellate(&dsplit);
}
else {
/* create vertices */
mesh->verts = P;
/* create triangles */
int index_offset = 0;
for(size_t i = 0; i < nverts.size(); i++) {
for(int j = 0; j < nverts[i]-2; j++) {
int v0 = verts[index_offset];
int v1 = verts[index_offset + j + 1];
int v2 = verts[index_offset + j + 2];
assert(v0 < (int)P.size());
assert(v1 < (int)P.size());
assert(v2 < (int)P.size());
mesh->add_triangle(v0, v1, v2, shader, smooth);
}
index_offset += nverts[i];
}
if(xml_read_float_array(UV, node, "UV")) {
ustring name = ustring("UVMap");
Attribute *attr = mesh->attributes.add(ATTR_STD_UV, name);
float3 *fdata = attr->data_float3();
/* loop over the triangles */
index_offset = 0;
for(size_t i = 0; i < nverts.size(); i++) {
for(int j = 0; j < nverts[i]-2; j++) {
int v0 = verts[index_offset];
int v1 = verts[index_offset + j + 1];
int v2 = verts[index_offset + j + 2];
assert(v0*2+1 < (int)UV.size());
assert(v1*2+1 < (int)UV.size());
assert(v2*2+1 < (int)UV.size());
fdata[0] = make_float3(UV[v0*2], UV[v0*2+1], 0.0);
fdata[1] = make_float3(UV[v1*2], UV[v1*2+1], 0.0);
fdata[2] = make_float3(UV[v2*2], UV[v2*2+1], 0.0);
fdata += 3;
}
index_offset += nverts[i];
}
}
}
/* temporary for test compatibility */
mesh->attributes.remove(ATTR_STD_VERTEX_NORMAL);
}
/* Patch */
static void xml_read_patch(const XMLReadState& state, pugi::xml_node node)
{
/* read patch */
Patch *patch = NULL;
vector<float3> P;
xml_read_float3_array(P, node, "P");
if(xml_equal_string(node, "type", "bilinear")) {
/* bilinear patch */
if(P.size() == 4) {
LinearQuadPatch *bpatch = new LinearQuadPatch();
for(int i = 0; i < 4; i++)
P[i] = transform_point(&state.tfm, P[i]);
memcpy(bpatch->hull, &P[0], sizeof(bpatch->hull));
patch = bpatch;
}
else
fprintf(stderr, "Invalid number of control points for bilinear patch.\n");
}
else if(xml_equal_string(node, "type", "bicubic")) {
/* bicubic patch */
if(P.size() == 16) {
BicubicPatch *bpatch = new BicubicPatch();
for(int i = 0; i < 16; i++)
P[i] = transform_point(&state.tfm, P[i]);
memcpy(bpatch->hull, &P[0], sizeof(bpatch->hull));
patch = bpatch;
}
else
fprintf(stderr, "Invalid number of control points for bicubic patch.\n");
}
else
fprintf(stderr, "Unknown patch type.\n");
if(patch) {
/* add mesh */
Mesh *mesh = xml_add_mesh(state.scene, transform_identity());
mesh->used_shaders.push_back(state.shader);
/* split */
SubdParams sdparams(mesh, state.shader, state.smooth);
xml_read_float(&sdparams.dicing_rate, node, "dicing_rate");
DiagSplit dsplit(sdparams);
dsplit.split_quad(patch);
delete patch;
/* temporary for test compatibility */
mesh->attributes.remove(ATTR_STD_VERTEX_NORMAL);
}
}
/* Light */
static void xml_read_light(const XMLReadState& state, pugi::xml_node node)
{
Light *light = new Light();
light->shader = state.shader;
/* Light Type
* 0: Point, 1: Sun, 3: Area, 5: Spot */
int type = 0;
xml_read_int(&type, node, "type");
light->type = (LightType)type;
/* Spot Light */
xml_read_float(&light->spot_angle, node, "spot_angle");
xml_read_float(&light->spot_smooth, node, "spot_smooth");
/* Area Light */
xml_read_float(&light->sizeu, node, "sizeu");
xml_read_float(&light->sizev, node, "sizev");
xml_read_float3(&light->axisu, node, "axisu");
xml_read_float3(&light->axisv, node, "axisv");
/* Portal? (Area light only) */
xml_read_bool(&light->is_portal, node, "is_portal");
/* Generic */
xml_read_float(&light->size, node, "size");
xml_read_float3(&light->dir, node, "dir");
xml_read_float3(&light->co, node, "P");
light->co = transform_point(&state.tfm, light->co);
/* Settings */
xml_read_bool(&light->cast_shadow, node, "cast_shadow");
xml_read_bool(&light->use_mis, node, "use_mis");
xml_read_int(&light->samples, node, "samples");
xml_read_int(&light->max_bounces, node, "max_bounces");
/* Ray Visibility */
xml_read_bool(&light->use_diffuse, node, "use_diffuse");
xml_read_bool(&light->use_glossy, node, "use_glossy");
xml_read_bool(&light->use_transmission, node, "use_transmission");
xml_read_bool(&light->use_scatter, node, "use_scatter");
state.scene->lights.push_back(light);
}
/* Transform */
static void xml_read_transform(pugi::xml_node node, Transform& tfm)
{
if(node.attribute("matrix")) {
vector<float> matrix;
if(xml_read_float_array(matrix, node, "matrix") && matrix.size() == 16)
tfm = tfm * transform_transpose((*(Transform*)&matrix[0]));
}
if(node.attribute("translate")) {
float3 translate = make_float3(0.0f, 0.0f, 0.0f);
xml_read_float3(&translate, node, "translate");
tfm = tfm * transform_translate(translate);
}
if(node.attribute("rotate")) {
float4 rotate = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
xml_read_float4(&rotate, node, "rotate");
tfm = tfm * transform_rotate(DEG2RADF(rotate.x), make_float3(rotate.y, rotate.z, rotate.w));
}
if(node.attribute("scale")) {
float3 scale = make_float3(0.0f, 0.0f, 0.0f);
xml_read_float3(&scale, node, "scale");
tfm = tfm * transform_scale(scale);
}
}
/* State */
static void xml_read_state(XMLReadState& state, pugi::xml_node node)
{
/* read shader */
string shadername;
if(xml_read_string(&shadername, node, "shader")) {
int i = 0;
bool found = false;
foreach(Shader *shader, state.scene->shaders) {
if(shader->name == shadername) {
state.shader = i;
found = true;
break;
}
i++;
}
if(!found)
fprintf(stderr, "Unknown shader \"%s\".\n", shadername.c_str());
}
xml_read_float(&state.dicing_rate, node, "dicing_rate");
/* read smooth/flat */
if(xml_equal_string(node, "interpolation", "smooth"))
state.smooth = true;
else if(xml_equal_string(node, "interpolation", "flat"))
state.smooth = false;
/* read displacement method */
if(xml_equal_string(node, "displacement_method", "true"))
state.displacement_method = Mesh::DISPLACE_TRUE;
else if(xml_equal_string(node, "displacement_method", "bump"))
state.displacement_method = Mesh::DISPLACE_BUMP;
else if(xml_equal_string(node, "displacement_method", "both"))
state.displacement_method = Mesh::DISPLACE_BOTH;
}
/* Scene */
static void xml_read_include(const XMLReadState& state, const string& src);
static void xml_read_scene(const XMLReadState& state, pugi::xml_node scene_node)
{
for(pugi::xml_node node = scene_node.first_child(); node; node = node.next_sibling()) {
if(string_iequals(node.name(), "film")) {
xml_read_film(state, node);
}
else if(string_iequals(node.name(), "integrator")) {
xml_read_integrator(state, node);
}
else if(string_iequals(node.name(), "camera")) {
xml_read_camera(state, node);
}
else if(string_iequals(node.name(), "shader")) {
xml_read_shader(state, node);
}
else if(string_iequals(node.name(), "background")) {
xml_read_background(state, node);
}
else if(string_iequals(node.name(), "mesh")) {
xml_read_mesh(state, node);
}
else if(string_iequals(node.name(), "patch")) {
xml_read_patch(state, node);
}
else if(string_iequals(node.name(), "light")) {
xml_read_light(state, node);
}
else if(string_iequals(node.name(), "transform")) {
XMLReadState substate = state;
xml_read_transform(node, substate.tfm);
xml_read_scene(substate, node);
}
else if(string_iequals(node.name(), "state")) {
XMLReadState substate = state;
xml_read_state(substate, node);
xml_read_scene(substate, node);
}
else if(string_iequals(node.name(), "include")) {
string src;
if(xml_read_string(&src, node, "src"))
xml_read_include(state, src);
}
else
fprintf(stderr, "Unknown node \"%s\".\n", node.name());
}
}
/* Include */
static void xml_read_include(const XMLReadState& state, const string& src)
{
/* open XML document */
pugi::xml_document doc;
pugi::xml_parse_result parse_result;
string path = path_join(state.base, src);
parse_result = doc.load_file(path.c_str());
if(parse_result) {
XMLReadState substate = state;
substate.base = path_dirname(path);
pugi::xml_node cycles = doc.child("cycles");
xml_read_scene(substate, cycles);
}
else {
fprintf(stderr, "%s read error: %s\n", src.c_str(), parse_result.description());
exit(EXIT_FAILURE);
}
}
/* File */
void xml_read_file(Scene *scene, const char *filepath)
{
XMLReadState state;
state.scene = scene;
state.tfm = transform_identity();
state.shader = scene->default_surface;
state.smooth = false;
state.dicing_rate = 0.1f;
state.base = path_dirname(filepath);
xml_read_include(state, path_filename(filepath));
scene->params.bvh_type = SceneParams::BVH_STATIC;
}
CCL_NAMESPACE_END
|