-
Notifications
You must be signed in to change notification settings - Fork 38
/
Copy pathgfx_scene.cpp
3623 lines (3427 loc) · 171 KB
/
gfx_scene.cpp
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
/****************************************************************************
MIT License
Copyright (c) 2024 Guillaume Boissé
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
****************************************************************************/
#include "gfx_scene.h"
#include <map>
#include <set>
#include <functional>
#include <ios>
#include <fstream>
#include <tiny_obj_loader.h> // obj loader
#define STB_IMAGE_IMPLEMENTATION
#include <stb_image.h>
#include <tinyexr.h>
#define GLM_ENABLE_EXPERIMENTAL
#include <glm/gtx/quaternion.hpp>
#include <glm/gtc/type_ptr.hpp>
#ifdef GFX_ENABLE_SCENE_KTX
# include <ktx.h>
# include <vulkan/vulkan.h>
#endif
#ifdef __clang__
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wlanguage-extension-token"
# pragma clang diagnostic ignored "-Wmissing-field-initializers"
#elif defined(__GNUC__)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wlanguage-extension-token"
# pragma GCC diagnostic ignored "-Wmissing-field-initializers"
#elif defined(_MSC_VER)
# pragma warning(push)
# pragma warning(disable:4789) // buffer will be overrun
#endif
#define CGLTF_IMPLEMENTATION
#include <cgltf.h> // glTF loader
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include <stb_image_write.h>
#ifdef __clang__
# pragma clang diagnostic pop
#elif defined(__GNUC__)
# pragma GCC diagnostic pop
#elif defined(_MSC_VER)
# pragma warning(pop)
#endif
class GfxSceneInternal
{
GFX_NON_COPYABLE(GfxSceneInternal);
struct GltfNode
{
glm::dmat4 default_local_transform_;
glm::dmat4 world_transform_;
uint64_t parent_ = 0;
GfxRef<GfxSkin> skin_;
GfxRef<GfxLight> light_;
GfxRef<GfxCamera> camera_;
std::vector<uint64_t> children_;
std::vector<GfxRef<GfxInstance>> instances_;
std::vector<float> default_weights_;
};
struct GltfAnimatedNode
{
glm::dvec3 translate_;
glm::dquat rotate_;
glm::dvec3 scale_;
};
enum GltfAnimationChannelMode
{
kGltfAnimationChannelMode_Linear = 0,
kGltfAnimationChannelMode_Step,
kGltfAnimationChannelMode_Count
};
enum GltfAnimationChannelType
{
kGltfAnimationChannelType_Translate = 0,
kGltfAnimationChannelType_Rotate,
kGltfAnimationChannelType_Scale,
kGltfAnimationChannelType_Weights,
kGltfAnimationChannelType_Count
};
struct GltfAnimationChannel
{
uint64_t node_;
std::vector<float> keyframes_;
std::vector<float> values_;
GltfAnimationChannelMode mode_;
GltfAnimationChannelType type_;
};
struct GltfAnimation
{
std::vector<uint64_t> animated_root_nodes_;
std::vector<GfxRef<GfxSkin>> dependent_skins_;
std::vector<GltfAnimationChannel> channels_;
};
struct GltfSkin
{
std::vector<glm::mat4> inverse_bind_matrices_;
std::vector<uint64_t> joints_;
};
std::vector<uint64_t> scene_gltf_nodes_;
GfxArray<GltfNode> gltf_nodes_;
GfxArray<GltfAnimatedNode> gltf_animated_nodes_;
GfxHandles gltf_node_handles_;
GfxArray<GltfAnimation> gltf_animations_;
GfxArray<GltfSkin> gltf_skins_;
GfxArray<GfxAnimation> animations_;
GfxArray<uint64_t> animation_refs_;
GfxArray<GfxMetadata> animation_metadata_;
GfxHandles animation_handles_;
GfxArray<GfxSkin> skins_;
GfxArray<uint64_t> skin_refs_;
GfxArray<GfxMetadata> skin_metadata_;
GfxHandles skin_handles_;
GfxArray<GfxCamera> cameras_;
GfxArray<uint64_t> camera_refs_;
GfxArray<GfxMetadata> camera_metadata_;
GfxRef<GfxCamera> active_camera_;
GfxHandles camera_handles_;
GfxArray<GfxLight> lights_;
GfxArray<uint64_t> light_refs_;
GfxArray<GfxMetadata> light_metadata_;
GfxHandles light_handles_;
GfxArray<GfxImage> images_;
GfxArray<uint64_t> image_refs_;
GfxArray<GfxMetadata> image_metadata_;
GfxHandles image_handles_;
GfxArray<GfxMaterial> materials_;
GfxArray<uint64_t> material_refs_;
GfxArray<GfxMetadata> material_metadata_;
GfxHandles material_handles_;
GfxArray<GfxMesh> meshes_;
GfxArray<uint64_t> mesh_refs_;
GfxArray<GfxMetadata> mesh_metadata_;
GfxHandles mesh_handles_;
GfxArray<GfxInstance> instances_;
GfxArray<uint64_t> instance_refs_;
GfxArray<GfxMetadata> instance_metadata_;
GfxHandles instance_handles_;
static GfxArray<GfxScene> scenes_;
static GfxHandles scene_handles_;
template<typename TYPE> GfxArray<TYPE> &objects_();
template<typename TYPE> GfxArray<uint64_t> &object_refs_();
template<typename TYPE> GfxArray<GfxMetadata> &object_metadata_();
template<typename TYPE> GfxHandles &object_handles_();
template<> inline GfxArray<GfxAnimation> &objects_<GfxAnimation>() { return animations_; }
template<> inline GfxArray<uint64_t> &object_refs_<GfxAnimation>() { return animation_refs_; }
template<> inline GfxArray<GfxMetadata> &object_metadata_<GfxAnimation>() { return animation_metadata_; }
template<> inline GfxHandles &object_handles_<GfxAnimation>() { return animation_handles_; }
template<> inline GfxArray<GfxSkin> &objects_<GfxSkin>() { return skins_; }
template<> inline GfxArray<uint64_t> &object_refs_<GfxSkin>() { return skin_refs_; }
template<> inline GfxArray<GfxMetadata> &object_metadata_<GfxSkin>() { return skin_metadata_; }
template<> inline GfxHandles &object_handles_<GfxSkin>() { return skin_handles_; }
template<> inline GfxArray<GfxCamera> &objects_<GfxCamera>() { return cameras_; }
template<> inline GfxArray<uint64_t> &object_refs_<GfxCamera>() { return camera_refs_; }
template<> inline GfxArray<GfxMetadata> &object_metadata_<GfxCamera>() { return camera_metadata_; }
template<> inline GfxHandles &object_handles_<GfxCamera>() { return camera_handles_; }
template<> inline GfxArray<GfxLight>& objects_<GfxLight>() { return lights_; }
template<> inline GfxArray<uint64_t>& object_refs_<GfxLight>() { return light_refs_; }
template<> inline GfxArray<GfxMetadata>& object_metadata_<GfxLight>() { return light_metadata_; }
template<> inline GfxHandles& object_handles_<GfxLight>() { return light_handles_; }
template<> inline GfxArray<GfxImage> &objects_<GfxImage>() { return images_; }
template<> inline GfxArray<uint64_t> &object_refs_<GfxImage>() { return image_refs_; }
template<> inline GfxArray<GfxMetadata> &object_metadata_<GfxImage>() { return image_metadata_; }
template<> inline GfxHandles &object_handles_<GfxImage>() { return image_handles_; }
template<> inline GfxArray<GfxMaterial> &objects_<GfxMaterial>() { return materials_; }
template<> inline GfxArray<uint64_t> &object_refs_<GfxMaterial>() { return material_refs_; }
template<> inline GfxArray<GfxMetadata> &object_metadata_<GfxMaterial>() { return material_metadata_; }
template<> inline GfxHandles &object_handles_<GfxMaterial>() { return material_handles_; }
template<> inline GfxArray<GfxMesh> &objects_<GfxMesh>() { return meshes_; }
template<> inline GfxArray<uint64_t> &object_refs_<GfxMesh>() { return mesh_refs_; }
template<> inline GfxArray<GfxMetadata> &object_metadata_<GfxMesh>() { return mesh_metadata_; }
template<> inline GfxHandles &object_handles_<GfxMesh>() { return mesh_handles_; }
template<> inline GfxArray<GfxInstance> &objects_<GfxInstance>() { return instances_; }
template<> inline GfxArray<uint64_t> &object_refs_<GfxInstance>() { return instance_refs_; }
template<> inline GfxArray<GfxMetadata> &object_metadata_<GfxInstance>() { return instance_metadata_; }
template<> inline GfxHandles &object_handles_<GfxInstance>() { return instance_handles_; }
public:
GfxSceneInternal(GfxScene &scene) : gltf_node_handles_("gltf_node"), animation_handles_("animation"), skin_handles_("skin"), camera_handles_("camera")
, image_handles_("image"), material_handles_("material"), mesh_handles_("mesh"), instance_handles_("instance")
{ scene.handle = reinterpret_cast<uint64_t>(this); }
~GfxSceneInternal() { terminate(); }
GfxResult initialize()
{
return kGfxResult_NoError;
}
GfxResult terminate()
{
GFX_TRY(clear());
return kGfxResult_NoError;
}
GfxResult import(GfxScene const &scene, char const *asset_file)
{
if(asset_file == nullptr)
return kGfxResult_InvalidParameter;
char const *asset_extension = strrchr(asset_file, '.');
if(asset_extension == nullptr)
return GFX_SET_ERROR(kGfxResult_InvalidParameter, "Unable to determine extension for asset file `%s'", asset_file);
if(CaseInsensitiveCompare(asset_extension, ".obj") ||
CaseInsensitiveCompare(asset_extension, ".objm"))
GFX_TRY(importObj(scene, asset_file));
else if(CaseInsensitiveCompare(asset_extension, ".glb") ||
CaseInsensitiveCompare(asset_extension, ".gltf"))
GFX_TRY(importGltf(scene, asset_file));
else if(CaseInsensitiveCompare(asset_extension, ".hdr"))
GFX_TRY(importHdr(scene, asset_file));
else if(CaseInsensitiveCompare(asset_extension, ".dds"))
GFX_TRY(importDds(scene, asset_file));
#ifdef GFX_ENABLE_SCENE_KTX
else if(CaseInsensitiveCompare(asset_extension, ".ktx2") ||
CaseInsensitiveCompare(asset_extension, ".ktx"))
GFX_TRY(importKtx(scene, asset_file));
#endif
else if(CaseInsensitiveCompare(asset_extension, ".exr"))
GFX_TRY(importExr(scene, asset_file));
else if(CaseInsensitiveCompare(asset_extension, ".bmp") ||
CaseInsensitiveCompare(asset_extension, ".png") ||
CaseInsensitiveCompare(asset_extension, ".tga") ||
CaseInsensitiveCompare(asset_extension, ".jpg") ||
CaseInsensitiveCompare(asset_extension, ".jpeg"))
GFX_TRY(importImage(scene, asset_file));
else
return GFX_SET_ERROR(kGfxResult_InvalidOperation, "Cannot import unsupported asset type `%s'", asset_extension);
return kGfxResult_NoError;
}
GfxResult clear()
{
clearObjects<GfxAnimation>();
clearObjects<GfxSkin>();
clearObjects<GfxCamera>();
clearObjects<GfxLight>();
clearObjects<GfxImage>();
clearObjects<GfxMaterial>();
clearObjects<GfxMesh>();
clearObjects<GfxInstance>();
clearNodes();
return kGfxResult_NoError;
}
GfxResult applyAnimation(uint64_t animation_handle, float time_in_seconds)
{
if(!animation_handles_.has_handle(animation_handle))
return GFX_SET_ERROR(kGfxResult_InvalidOperation, "Cannot apply animation of an invalid object");
GltfAnimation const *gltf_animation = gltf_animations_.at(GetObjectIndex(animation_handle));
if(gltf_animation == nullptr)
return kGfxResult_NoError;
applyAnimation(*gltf_animation, time_in_seconds);
updateTransforms(*gltf_animation);
return kGfxResult_NoError;
}
GfxResult resetAnimation(uint64_t animation_handle)
{
if(!animation_handles_.has_handle(animation_handle))
return GFX_SET_ERROR(kGfxResult_InvalidOperation, "Cannot reset animation of an invalid object");
GltfAnimation const *gltf_animation = gltf_animations_.at(GetObjectIndex(animation_handle));
if(gltf_animation != nullptr)
{
std::function<void(uint64_t, glm::dmat4 const &)> VisitNode;
VisitNode = [&](uint64_t node_handle, glm::dmat4 const &parent_transform)
{
if(!gltf_node_handles_.has_handle(node_handle)) return;
GltfNode const &node = gltf_nodes_[GetObjectIndex(node_handle)];
glm::dmat4 const transform = parent_transform * node.default_local_transform_;
for(size_t i = 0; i < node.children_.size(); ++i)
VisitNode(node.children_[i], transform);
for(size_t i = 0; i < node.instances_.size(); ++i)
if(node.instances_[i])
node.instances_[i]->transform = glm::mat4(transform);
if(node.camera_)
TransformGltfCamera(*node.camera_, transform);
if(node.light_)
TransformGltfLight(*node.light_, transform);
};
for(size_t i = 0; i < gltf_animation->animated_root_nodes_.size(); ++i)
VisitNode(gltf_animation->animated_root_nodes_[i], glm::dmat4(1.0));
for(size_t i = 0; i < gltf_animation->channels_.size(); ++i)
{
GltfAnimationChannel const &channel = gltf_animation->channels_[i];
if(!gltf_node_handles_.has_handle(channel.node_) || (channel.type_ != kGltfAnimationChannelType_Weights)) continue;
GltfNode const &node = gltf_nodes_[GetObjectIndex(channel.node_)];
for(size_t j = 0; j < node.instances_.size(); ++j)
{
if(!node.instances_[j]) continue;
if(!node.default_weights_.empty())
node.instances_[j]->weights = node.default_weights_;
else if(!node.instances_[j]->mesh->default_weights.empty())
node.instances_[j]->weights = node.instances_[j]->mesh->default_weights;
else
std::fill(node.instances_[j]->weights.begin(), node.instances_[j]->weights.end(), 0.0f);
}
}
}
return kGfxResult_NoError;
}
GfxResult resetAllAnimation()
{
uint32_t const animation_count = animation_refs_.size();
for(uint32_t i = 0; i < animation_count; ++i)
{
uint64_t const animation_handle = animation_refs_[animation_refs_.get_index(i)];
resetAnimation(animation_handle); // reset animation
}
return kGfxResult_NoError;
}
float getAnimationLength(uint64_t animation_handle)
{
if(!animation_handles_.has_handle(animation_handle))
{
GFX_PRINT_ERROR(kGfxResult_InvalidOperation, "Cannot get the duration of an invalid animation object");
return 0.0f; // invalid operation
}
float animation_length = 0.0f;
GltfAnimation const *gltf_animation = gltf_animations_.at(GetObjectIndex(animation_handle));
if(gltf_animation != nullptr)
for(size_t i = 0; i < gltf_animation->channels_.size(); ++i)
if(!gltf_animation->channels_[i].keyframes_.empty())
animation_length = GFX_MAX(animation_length, gltf_animation->channels_[i].keyframes_.back());
return animation_length;
}
GfxResult setActiveCamera(GfxScene const &scene, uint64_t camera_handle)
{
active_camera_.handle = camera_handle;
active_camera_.scene = scene;
return kGfxResult_NoError;
}
GfxRef<GfxCamera> getActiveCamera()
{
return active_camera_;
}
template<typename TYPE>
GfxRef<TYPE> createObject(GfxScene const &scene)
{
GfxRef<TYPE> object_ref = {};
object_ref.handle = object_handles_<TYPE>().allocate_handle();
object_refs_<TYPE>().insert(GetObjectIndex(object_ref.handle), object_ref.handle);
object_metadata_<TYPE>().insert(GetObjectIndex(object_ref.handle)).is_valid = true;
objects_<TYPE>().insert(GetObjectIndex(object_ref.handle)) = {};
object_ref.scene = scene;
return object_ref;
}
template<typename TYPE>
GfxResult destroyObjectCallback(uint64_t object_handle);
template<>
GfxResult destroyObjectCallback<GfxAnimation>(uint64_t object_handle)
{
GFX_ASSERT(animation_handles_.has_handle(object_handle));
GltfAnimation const *gltf_animation = gltf_animations_.at(GetObjectIndex(object_handle));
if(gltf_animation != nullptr)
gltf_animations_.erase(GetObjectIndex(object_handle));
return kGfxResult_NoError;
}
template<>
GfxResult destroyObjectCallback<GfxSkin>(uint64_t object_handle)
{
GFX_ASSERT(skin_handles_.has_handle(object_handle));
GltfSkin const *gltf_skin = gltf_skins_.at(GetObjectIndex(object_handle));
if(gltf_skin != nullptr)
gltf_skins_.erase(GetObjectIndex(object_handle));
return kGfxResult_NoError;
}
template<typename TYPE>
GfxResult destroyObject(uint64_t object_handle)
{
if(object_handle == 0)
return kGfxResult_NoError;
if(!object_handles_<TYPE>().has_handle(object_handle))
return GFX_SET_ERROR(kGfxResult_InvalidOperation, "Cannot destroy invalid scene object");
destroyObjectCallback<TYPE>(object_handle);
objects_<TYPE>().erase(GetObjectIndex(object_handle));
object_refs_<TYPE>().erase(GetObjectIndex(object_handle));
object_metadata_<TYPE>().erase(GetObjectIndex(object_handle));
object_handles_<TYPE>().free_handle(object_handle);
return kGfxResult_NoError;
}
template<typename TYPE>
GfxResult clearObjects()
{
while(getObjectCount<TYPE>() > 0)
GFX_TRY(destroyObject<TYPE>(object_refs_<TYPE>().data()[0]));
return kGfxResult_NoError;
}
GfxResult clearNodes()
{
std::function<void(uint64_t)> VisitNode;
VisitNode = [&](uint64_t node_handle)
{
if(!gltf_node_handles_.has_handle(node_handle)) return;
GltfNode const &node = gltf_nodes_[GetObjectIndex(node_handle)];
for(uint64_t child_handle : node.children_)
VisitNode(child_handle); // release child nodes
gltf_node_handles_.free_handle(node_handle);
gltf_nodes_.erase(GetObjectIndex(node_handle));
if(gltf_animated_nodes_.has(GetObjectIndex(node_handle)))
gltf_animated_nodes_.erase(GetObjectIndex(node_handle));
};
for(uint64_t node_handle : scene_gltf_nodes_)
VisitNode(node_handle);
scene_gltf_nodes_.clear();
return kGfxResult_NoError;
}
template<typename TYPE>
uint32_t getObjectCount()
{
return objects_<TYPE>().size();
}
template<typename TYPE>
TYPE const *getObjects()
{
return objects_<TYPE>().data();
}
template<typename TYPE>
TYPE *getObject(uint64_t object_handle)
{
if(!object_handles_<TYPE>().has_handle(object_handle))
return nullptr; // invalid object handle
return objects_<TYPE>().at(GetObjectIndex(object_handle));
}
template<typename TYPE>
GfxRef<TYPE> getObjectHandle(GfxScene const &scene, uint32_t object_index)
{
GfxRef<TYPE> object_ref = {};
if(object_index >= object_refs_<TYPE>().size())
return object_ref; // out of bounds
object_ref.handle = object_refs_<TYPE>()[object_refs_<TYPE>().get_index(object_index)];
object_ref.scene = scene;
return object_ref;
}
template<typename TYPE>
GfxMetadata const &getObjectMetadata(uint64_t object_handle)
{
static GfxMetadata const metadata = {};
if(!object_handles_<TYPE>().has_handle(object_handle))
return metadata; // invalid object handle
return object_metadata_<TYPE>()[GetObjectIndex(object_handle)];
}
template<typename TYPE>
bool setObjectMetadata(uint64_t object_handle, GfxMetadata const &metadata)
{
if(!object_handles_<TYPE>().has_handle(object_handle))
return false; // invalid object handle
GfxMetadata &object_metadata = object_metadata_<TYPE>()[GetObjectIndex(object_handle)];
object_metadata = metadata; // commit metadata
object_metadata.is_valid = true;
return true;
}
static inline GfxSceneInternal *GetGfxScene(GfxScene scene) { return reinterpret_cast<GfxSceneInternal *>(scene.handle); }
private:
static inline uint32_t GetObjectIndex(uint64_t object_handle)
{
return (uint32_t)(object_handle != 0 ? object_handle & 0xFFFFFFFFull : 0xFFFFFFFFull);
}
static inline bool CaseInsensitiveCompare(char const *str1, char const *str2)
{
GFX_ASSERT(str1 != nullptr && str2 != nullptr);
for(uint32_t i = 0;; ++i)
if(tolower(str1[i]) != tolower(str2[i]))
return false;
else if(str1[i] == '\0')
break;
return true;
}
// The cgltf_node_transform_local function adaptation
static inline glm::dmat4 CalculateNodeTransform(glm::dvec3 trans, glm::dquat rot, glm::dvec3 scale)
{
glm::dmat4 transform;
transform[0].x = (1 - 2.0 * rot.y * rot.y - 2.0 * rot.z * rot.z) * scale.x;
transform[0].y = (2.0 * rot.x * rot.y + 2.0 * rot.z * rot.w) * scale.x;
transform[0].z = (2.0 * rot.x * rot.z - 2.0 * rot.y * rot.w) * scale.x;
transform[0].w = 0.0;
transform[1].x = (2.0 * rot.x * rot.y - 2.0 * rot.z * rot.w) * scale.x;
transform[1].y = (1.0 - 2.0 * rot.x * rot.x - 2.0 * rot.z * rot.z) * scale.x;
transform[1].z = (2.0 * rot.y * rot.z + 2 * rot.x * rot.w) * scale.x;
transform[1].w = 0.0;
transform[2].x = (2.0 * rot.x * rot.z + 2.0 * rot.y * rot.w) * scale.x;
transform[2].y = (2.0 * rot.y * rot.z - 2.0 * rot.x * rot.w) * scale.x;
transform[2].z = (1.0 - 2.0 * rot.x * rot.x - 2.0 * rot.y * rot.y) * scale.x;
transform[2].w = 0.0;
transform[3].x = trans.x;
transform[3].y = trans.y;
transform[3].z = trans.z;
transform[3].w = 1.0;
return transform;
}
static inline void TransformGltfCamera(GfxCamera &camera, glm::dmat4 const &transform)
{
glm::dvec4 eye(0.0, 0.0, 0.0, 1.0);
glm::dvec4 center(0.0, 0.0, -1.0, 1.0);
glm::dvec4 up(0.0, 1.0, 0.0, 0.0);
eye = transform * eye;
center = transform * center;
up = transform * up;
camera.eye = glm::vec3(eye / eye.w);
camera.center = glm::vec3(center / center.w);
camera.up = glm::vec3(glm::normalize(up));
}
static inline void TransformGltfLight(GfxLight& light, glm::dmat4 const& transform)
{
glm::dvec4 position(0.0, 0.0, 0.0, 1.0);
glm::dvec4 direction(0.0, 0.0, 1.0, 0.0);//Direction oriented toward the light
position = transform * position;
direction = transform * direction;
light.position = glm::vec3(position / position.w);
light.direction = glm::vec3(direction);
}
static inline DXGI_FORMAT GetImageFormat(GfxImage const& image)
{
if(image.format != DXGI_FORMAT_UNKNOWN) return image.format;
if(image.bytes_per_channel != 1 && image.bytes_per_channel != 2 && image.bytes_per_channel != 4) return DXGI_FORMAT_UNKNOWN;
uint32_t const bits = (image.bytes_per_channel << 3);
switch(image.channel_count) {
case 1:
return (bits == 8 ? DXGI_FORMAT_R8_UNORM : bits == 16 ? DXGI_FORMAT_R16_UNORM : DXGI_FORMAT_R32_FLOAT);
case 2:
return (bits == 8 ? DXGI_FORMAT_R8G8_UNORM : bits == 16 ? DXGI_FORMAT_R16G16_UNORM : DXGI_FORMAT_R32G32_FLOAT);
case 4:
return (bits == 8 ? DXGI_FORMAT_R8G8B8A8_UNORM : bits == 16 ? DXGI_FORMAT_R16G16B16A16_UNORM : DXGI_FORMAT_R32G32B32A32_FLOAT);
default:
break;
}
return DXGI_FORMAT_UNKNOWN;
}
static inline DXGI_FORMAT ConvertImageFormatSRGB(const DXGI_FORMAT format)
{
switch(format)
{
case DXGI_FORMAT_R8G8B8A8_UNORM: return DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;
case DXGI_FORMAT_BC1_UNORM: return DXGI_FORMAT_BC1_UNORM_SRGB;
case DXGI_FORMAT_BC2_UNORM: return DXGI_FORMAT_BC2_UNORM_SRGB;
case DXGI_FORMAT_BC3_UNORM: return DXGI_FORMAT_BC3_UNORM_SRGB;
case DXGI_FORMAT_BC7_UNORM: return DXGI_FORMAT_BC7_UNORM_SRGB;
case DXGI_FORMAT_B8G8R8A8_TYPELESS: return DXGI_FORMAT_B8G8R8A8_UNORM_SRGB;
case DXGI_FORMAT_B8G8R8X8_TYPELESS: return DXGI_FORMAT_B8G8R8X8_UNORM_SRGB;
default:
break;
}
return format;
}
static inline DXGI_FORMAT ConvertImageFormatLinear(const DXGI_FORMAT format)
{
switch(format)
{
case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB: return DXGI_FORMAT_R8G8B8A8_UNORM;
case DXGI_FORMAT_BC1_UNORM_SRGB: return DXGI_FORMAT_BC1_UNORM;
case DXGI_FORMAT_BC2_UNORM_SRGB: return DXGI_FORMAT_BC2_UNORM;
case DXGI_FORMAT_BC3_UNORM_SRGB: return DXGI_FORMAT_BC3_UNORM;
case DXGI_FORMAT_BC7_UNORM_SRGB: return DXGI_FORMAT_BC7_UNORM;
case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB: return DXGI_FORMAT_B8G8R8A8_TYPELESS;
case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB: return DXGI_FORMAT_B8G8R8X8_TYPELESS;
default:
break;
}
return format;
}
inline static uint32_t GetBitsPerPixel(DXGI_FORMAT format)
{
switch(format)
{
case DXGI_FORMAT_R32G32B32A32_TYPELESS:
case DXGI_FORMAT_R32G32B32A32_FLOAT:
case DXGI_FORMAT_R32G32B32A32_UINT:
case DXGI_FORMAT_R32G32B32A32_SINT:
return 128;
case DXGI_FORMAT_R32G32B32_TYPELESS:
case DXGI_FORMAT_R32G32B32_FLOAT:
case DXGI_FORMAT_R32G32B32_UINT:
case DXGI_FORMAT_R32G32B32_SINT:
return 96;
case DXGI_FORMAT_R16G16B16A16_TYPELESS:
case DXGI_FORMAT_R16G16B16A16_FLOAT:
case DXGI_FORMAT_R16G16B16A16_UNORM:
case DXGI_FORMAT_R16G16B16A16_UINT:
case DXGI_FORMAT_R16G16B16A16_SNORM:
case DXGI_FORMAT_R16G16B16A16_SINT:
case DXGI_FORMAT_R32G32_TYPELESS:
case DXGI_FORMAT_R32G32_FLOAT:
case DXGI_FORMAT_R32G32_UINT:
case DXGI_FORMAT_R32G32_SINT:
case DXGI_FORMAT_R32G8X24_TYPELESS:
case DXGI_FORMAT_D32_FLOAT_S8X24_UINT:
case DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS:
case DXGI_FORMAT_X32_TYPELESS_G8X24_UINT:
case DXGI_FORMAT_Y416:
case DXGI_FORMAT_Y210:
case DXGI_FORMAT_Y216:
return 64;
case DXGI_FORMAT_R10G10B10A2_TYPELESS:
case DXGI_FORMAT_R10G10B10A2_UNORM:
case DXGI_FORMAT_R10G10B10A2_UINT:
case DXGI_FORMAT_R11G11B10_FLOAT:
case DXGI_FORMAT_R8G8B8A8_TYPELESS:
case DXGI_FORMAT_R8G8B8A8_UNORM:
case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
case DXGI_FORMAT_R8G8B8A8_UINT:
case DXGI_FORMAT_R8G8B8A8_SNORM:
case DXGI_FORMAT_R8G8B8A8_SINT:
case DXGI_FORMAT_R16G16_TYPELESS:
case DXGI_FORMAT_R16G16_FLOAT:
case DXGI_FORMAT_R16G16_UNORM:
case DXGI_FORMAT_R16G16_UINT:
case DXGI_FORMAT_R16G16_SNORM:
case DXGI_FORMAT_R16G16_SINT:
case DXGI_FORMAT_R32_TYPELESS:
case DXGI_FORMAT_D32_FLOAT:
case DXGI_FORMAT_R32_FLOAT:
case DXGI_FORMAT_R32_UINT:
case DXGI_FORMAT_R32_SINT:
case DXGI_FORMAT_R24G8_TYPELESS:
case DXGI_FORMAT_D24_UNORM_S8_UINT:
case DXGI_FORMAT_R24_UNORM_X8_TYPELESS:
case DXGI_FORMAT_X24_TYPELESS_G8_UINT:
case DXGI_FORMAT_R9G9B9E5_SHAREDEXP:
case DXGI_FORMAT_R8G8_B8G8_UNORM:
case DXGI_FORMAT_G8R8_G8B8_UNORM:
case DXGI_FORMAT_B8G8R8A8_UNORM:
case DXGI_FORMAT_B8G8R8X8_UNORM:
case DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM:
case DXGI_FORMAT_B8G8R8A8_TYPELESS:
case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
case DXGI_FORMAT_B8G8R8X8_TYPELESS:
case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
case DXGI_FORMAT_AYUV:
case DXGI_FORMAT_Y410:
case DXGI_FORMAT_YUY2:
return 32;
case DXGI_FORMAT_P010:
case DXGI_FORMAT_P016:
return 24;
case DXGI_FORMAT_R8G8_TYPELESS:
case DXGI_FORMAT_R8G8_UNORM:
case DXGI_FORMAT_R8G8_UINT:
case DXGI_FORMAT_R8G8_SNORM:
case DXGI_FORMAT_R8G8_SINT:
case DXGI_FORMAT_R16_TYPELESS:
case DXGI_FORMAT_R16_FLOAT:
case DXGI_FORMAT_D16_UNORM:
case DXGI_FORMAT_R16_UNORM:
case DXGI_FORMAT_R16_UINT:
case DXGI_FORMAT_R16_SNORM:
case DXGI_FORMAT_R16_SINT:
case DXGI_FORMAT_B5G6R5_UNORM:
case DXGI_FORMAT_B5G5R5A1_UNORM:
case DXGI_FORMAT_A8P8:
case DXGI_FORMAT_B4G4R4A4_UNORM:
return 16;
case DXGI_FORMAT_NV12:
case DXGI_FORMAT_420_OPAQUE:
case DXGI_FORMAT_NV11:
return 12;
case DXGI_FORMAT_R8_TYPELESS:
case DXGI_FORMAT_R8_UNORM:
case DXGI_FORMAT_R8_UINT:
case DXGI_FORMAT_R8_SNORM:
case DXGI_FORMAT_R8_SINT:
case DXGI_FORMAT_A8_UNORM:
case DXGI_FORMAT_AI44:
case DXGI_FORMAT_IA44:
case DXGI_FORMAT_P8:
return 8;
case DXGI_FORMAT_R1_UNORM:
return 1;
case DXGI_FORMAT_BC1_TYPELESS:
case DXGI_FORMAT_BC1_UNORM:
case DXGI_FORMAT_BC1_UNORM_SRGB:
case DXGI_FORMAT_BC4_TYPELESS:
case DXGI_FORMAT_BC4_UNORM:
case DXGI_FORMAT_BC4_SNORM:
return 4;
case DXGI_FORMAT_BC2_TYPELESS:
case DXGI_FORMAT_BC2_UNORM:
case DXGI_FORMAT_BC2_UNORM_SRGB:
case DXGI_FORMAT_BC3_TYPELESS:
case DXGI_FORMAT_BC3_UNORM:
case DXGI_FORMAT_BC3_UNORM_SRGB:
case DXGI_FORMAT_BC5_TYPELESS:
case DXGI_FORMAT_BC5_UNORM:
case DXGI_FORMAT_BC5_SNORM:
case DXGI_FORMAT_BC6H_TYPELESS:
case DXGI_FORMAT_BC6H_UF16:
case DXGI_FORMAT_BC6H_SF16:
case DXGI_FORMAT_BC7_TYPELESS:
case DXGI_FORMAT_BC7_UNORM:
case DXGI_FORMAT_BC7_UNORM_SRGB:
return 8;
default:
return 0;
}
}
inline static uint32_t GetNumChannels(DXGI_FORMAT format)
{
switch(format)
{
case DXGI_FORMAT_R32G32B32A32_TYPELESS:
case DXGI_FORMAT_R32G32B32A32_FLOAT:
case DXGI_FORMAT_R32G32B32A32_UINT:
case DXGI_FORMAT_R32G32B32A32_SINT:
case DXGI_FORMAT_R16G16B16A16_TYPELESS:
case DXGI_FORMAT_R16G16B16A16_FLOAT:
case DXGI_FORMAT_R16G16B16A16_UNORM:
case DXGI_FORMAT_R16G16B16A16_UINT:
case DXGI_FORMAT_R16G16B16A16_SNORM:
case DXGI_FORMAT_R16G16B16A16_SINT:
case DXGI_FORMAT_R10G10B10A2_TYPELESS:
case DXGI_FORMAT_R10G10B10A2_UNORM:
case DXGI_FORMAT_R10G10B10A2_UINT:
case DXGI_FORMAT_R8G8B8A8_TYPELESS:
case DXGI_FORMAT_R8G8B8A8_UNORM:
case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
case DXGI_FORMAT_R8G8B8A8_UINT:
case DXGI_FORMAT_R8G8B8A8_SNORM:
case DXGI_FORMAT_R8G8B8A8_SINT:
case DXGI_FORMAT_R9G9B9E5_SHAREDEXP:
case DXGI_FORMAT_B5G5R5A1_UNORM:
case DXGI_FORMAT_B8G8R8A8_UNORM:
case DXGI_FORMAT_B8G8R8X8_UNORM:
case DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM:
case DXGI_FORMAT_B8G8R8A8_TYPELESS:
case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
case DXGI_FORMAT_B8G8R8X8_TYPELESS:
case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
case DXGI_FORMAT_B4G4R4A4_UNORM:
case DXGI_FORMAT_BC2_TYPELESS:
case DXGI_FORMAT_BC2_UNORM:
case DXGI_FORMAT_BC2_UNORM_SRGB:
case DXGI_FORMAT_BC3_TYPELESS:
case DXGI_FORMAT_BC3_UNORM:
case DXGI_FORMAT_BC3_UNORM_SRGB:
case DXGI_FORMAT_BC7_TYPELESS: // BC7 could also be 3 channel, there is no way of knowing
case DXGI_FORMAT_BC7_UNORM:
case DXGI_FORMAT_BC7_UNORM_SRGB:
return 4;
case DXGI_FORMAT_R32G32B32_TYPELESS:
case DXGI_FORMAT_R32G32B32_FLOAT:
case DXGI_FORMAT_R32G32B32_UINT:
case DXGI_FORMAT_R32G32B32_SINT:
case DXGI_FORMAT_R11G11B10_FLOAT:
case DXGI_FORMAT_R8G8_B8G8_UNORM:
case DXGI_FORMAT_G8R8_G8B8_UNORM:
case DXGI_FORMAT_B5G6R5_UNORM:
case DXGI_FORMAT_BC1_TYPELESS:
case DXGI_FORMAT_BC1_UNORM:
case DXGI_FORMAT_BC1_UNORM_SRGB:
case DXGI_FORMAT_AYUV:
case DXGI_FORMAT_Y410:
case DXGI_FORMAT_Y416:
case DXGI_FORMAT_NV12:
case DXGI_FORMAT_P010:
case DXGI_FORMAT_P016:
case DXGI_FORMAT_420_OPAQUE:
case DXGI_FORMAT_YUY2:
case DXGI_FORMAT_Y210:
case DXGI_FORMAT_Y216:
case DXGI_FORMAT_NV11:
case DXGI_FORMAT_AI44:
case DXGI_FORMAT_IA44:
case DXGI_FORMAT_P8:
case DXGI_FORMAT_A8P8:
case DXGI_FORMAT_P208:
case DXGI_FORMAT_V208:
case DXGI_FORMAT_V408:
case DXGI_FORMAT_BC6H_TYPELESS:
case DXGI_FORMAT_BC6H_UF16:
case DXGI_FORMAT_BC6H_SF16:
return 3;
case DXGI_FORMAT_R32G32_TYPELESS:
case DXGI_FORMAT_R32G32_FLOAT:
case DXGI_FORMAT_R32G32_UINT:
case DXGI_FORMAT_R32G32_SINT:
case DXGI_FORMAT_R32G8X24_TYPELESS:
case DXGI_FORMAT_D32_FLOAT_S8X24_UINT:
case DXGI_FORMAT_R16G16_TYPELESS:
case DXGI_FORMAT_R16G16_FLOAT:
case DXGI_FORMAT_R16G16_UNORM:
case DXGI_FORMAT_R16G16_UINT:
case DXGI_FORMAT_R16G16_SNORM:
case DXGI_FORMAT_R16G16_SINT:
case DXGI_FORMAT_R24G8_TYPELESS:
case DXGI_FORMAT_D24_UNORM_S8_UINT:
case DXGI_FORMAT_R8G8_TYPELESS:
case DXGI_FORMAT_R8G8_UNORM:
case DXGI_FORMAT_R8G8_UINT:
case DXGI_FORMAT_R8G8_SNORM:
case DXGI_FORMAT_R8G8_SINT:
case DXGI_FORMAT_BC5_TYPELESS:
case DXGI_FORMAT_BC5_UNORM:
case DXGI_FORMAT_BC5_SNORM:
return 2;
case DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS:
case DXGI_FORMAT_X32_TYPELESS_G8X24_UINT:
case DXGI_FORMAT_R32_TYPELESS:
case DXGI_FORMAT_D32_FLOAT:
case DXGI_FORMAT_R32_FLOAT:
case DXGI_FORMAT_R32_UINT:
case DXGI_FORMAT_R32_SINT:
case DXGI_FORMAT_R24_UNORM_X8_TYPELESS:
case DXGI_FORMAT_X24_TYPELESS_G8_UINT:
case DXGI_FORMAT_R16_TYPELESS:
case DXGI_FORMAT_R16_FLOAT:
case DXGI_FORMAT_D16_UNORM:
case DXGI_FORMAT_R16_UNORM:
case DXGI_FORMAT_R16_UINT:
case DXGI_FORMAT_R16_SNORM:
case DXGI_FORMAT_R16_SINT:
case DXGI_FORMAT_R8_TYPELESS:
case DXGI_FORMAT_R8_UNORM:
case DXGI_FORMAT_R8_UINT:
case DXGI_FORMAT_R8_SNORM:
case DXGI_FORMAT_R8_SINT:
case DXGI_FORMAT_A8_UNORM:
case DXGI_FORMAT_R1_UNORM:
case DXGI_FORMAT_BC4_TYPELESS:
case DXGI_FORMAT_BC4_UNORM:
case DXGI_FORMAT_BC4_SNORM:
return 1;
default: return 0;
}
}
template<typename T>
static inline bool UnpackAccessor(cgltf_accessor const *accessor, std::vector<T> &buffer)
{
if(accessor == nullptr) return true;
GFX_ASSERT(sizeof(T) == cgltf_num_components(accessor->type) * sizeof(float));
buffer.resize(accessor->count);
cgltf_size floats_size = cgltf_num_components(accessor->type) * accessor->count;
if(cgltf_accessor_unpack_floats(accessor, (float*)&buffer[0], floats_size) < floats_size)
{
GFX_PRINT_ERROR(kGfxResult_InternalError, "Failed to unpack sparse accessor");
return false;
}
return true;
};
void applyAnimation(GltfAnimation const &gltf_animation, float time_in_seconds)
{
for(size_t i = 0; i < gltf_animation.channels_.size(); ++i)
{
GltfAnimationChannel const &animation_channel = gltf_animation.channels_[i];
if(!gltf_node_handles_.has_handle(animation_channel.node_)) continue; // invalid target node
GltfAnimatedNode *animated_node = gltf_animated_nodes_.at(GetObjectIndex(animation_channel.node_));
if(animation_channel.keyframes_.empty() || ((animation_channel.type_ != kGltfAnimationChannelType_Weights) &&
(animated_node == nullptr))) { GFX_ASSERT(0); continue; }
if(animation_channel.keyframes_.empty()) { GFX_ASSERT(0); continue; }
intptr_t const keyframe = std::lower_bound(animation_channel.keyframes_.begin(),
animation_channel.keyframes_.end(), time_in_seconds) - animation_channel.keyframes_.begin();
size_t const previous_index = std::max(keyframe - 1, 0ll);
size_t const next_index = std::min(keyframe, (intptr_t)animation_channel.keyframes_.size() - 1);
double interpolate = 0.0;
if((animation_channel.mode_ == kGltfAnimationChannelMode_Linear) && (previous_index != next_index))
{
interpolate = ((double)time_in_seconds - (double)animation_channel.keyframes_[keyframe - 1]) /
((double)animation_channel.keyframes_[keyframe] - (double)animation_channel.keyframes_[keyframe - 1]);
}
if(animation_channel.type_ == kGltfAnimationChannelType_Translate)
{
for(uint32_t j = 0; j < 3; ++j)
{
animated_node->translate_[j] = glm::mix(animation_channel.values_[3 * previous_index + j],
animation_channel.values_[3 * next_index + j], interpolate);
}
}
else if(animation_channel.type_ == kGltfAnimationChannelType_Rotate)
{
glm::dquat const previous = glm::dquat(animation_channel.values_[4 * previous_index + 3], animation_channel.values_[4 * previous_index],
animation_channel.values_[4 * previous_index + 1], animation_channel.values_[4 * previous_index + 2]);
glm::dquat const next = glm::dquat(animation_channel.values_[4 * next_index + 3], animation_channel.values_[4 * next_index],
animation_channel.values_[4 * next_index + 1], animation_channel.values_[4 * next_index + 2]);
animated_node->rotate_ = glm::slerp(previous, next, interpolate);
}
else if(animation_channel.type_ == kGltfAnimationChannelType_Scale)
{
for(uint32_t j = 0; j < 3; ++j)
{
animated_node->scale_[j] = glm::mix(animation_channel.values_[3 * previous_index + j],
animation_channel.values_[3 * next_index + j], interpolate);
}
}
else
{
size_t const weights_count = animation_channel.values_.size() / animation_channel.keyframes_.size();
std::vector<float> weights;
weights.resize(weights_count);
for(size_t j = 0; j < weights_count; ++j)
{
weights[j] = glm::mix(animation_channel.values_[previous_index * weights_count + j],
animation_channel.values_[next_index * weights_count + j], interpolate);
}
GltfNode const &node = gltf_nodes_[GetObjectIndex(animation_channel.node_)];
for(size_t j = 0; j < node.instances_.size(); ++j)
{
if(!node.instances_[j]) continue;
node.instances_[j]->weights = weights;
}
}
}
}
void updateTransforms(GltfAnimation const &gltf_animation)
{
std::function<void(uint64_t, glm::dmat4 const &)> VisitNode;
VisitNode = [&](uint64_t node_handle, glm::dmat4 const &parent_transform)
{
GFX_ASSERT(gltf_node_handles_.has_handle(node_handle));
GltfNode &node = gltf_nodes_[GetObjectIndex(node_handle)];
GltfAnimatedNode *animated_node = gltf_animated_nodes_.at(GetObjectIndex(node_handle));
if(animated_node == nullptr)