-
-
Notifications
You must be signed in to change notification settings - Fork 2.2k
/
rtextures.c
4249 lines (3570 loc) · 172 KB
/
rtextures.c
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
/**********************************************************************************************
*
* rtextures - Basic functions to load and draw textures
*
* CONFIGURATION:
*
* #define SUPPORT_MODULE_RTEXTURES
* rtextures module is included in the build
*
* #define SUPPORT_FILEFORMAT_BMP
* #define SUPPORT_FILEFORMAT_PNG
* #define SUPPORT_FILEFORMAT_TGA
* #define SUPPORT_FILEFORMAT_JPG
* #define SUPPORT_FILEFORMAT_GIF
* #define SUPPORT_FILEFORMAT_QOI
* #define SUPPORT_FILEFORMAT_PSD
* #define SUPPORT_FILEFORMAT_PIC
* #define SUPPORT_FILEFORMAT_HDR
* #define SUPPORT_FILEFORMAT_DDS
* #define SUPPORT_FILEFORMAT_PKM
* #define SUPPORT_FILEFORMAT_KTX
* #define SUPPORT_FILEFORMAT_PVR
* #define SUPPORT_FILEFORMAT_ASTC
* Select desired fileformats to be supported for image data loading. Some of those formats are
* supported by default, to remove support, just comment unrequired #define in this module
*
* #define SUPPORT_IMAGE_EXPORT
* Support image export in multiple file formats
*
* #define SUPPORT_IMAGE_MANIPULATION
* Support multiple image editing functions to scale, adjust colors, flip, draw on images, crop...
* If not defined only three image editing functions supported: ImageFormat(), ImageAlphaMask(), ImageToPOT()
*
* #define SUPPORT_IMAGE_GENERATION
* Support procedural image generation functionality (gradient, spot, perlin-noise, cellular)
*
* DEPENDENCIES:
* stb_image - Multiple image formats loading (JPEG, PNG, BMP, TGA, PSD, GIF, PIC)
* NOTE: stb_image has been slightly modified to support Android platform.
* stb_image_resize - Multiple image resize algorithms
*
*
* LICENSE: zlib/libpng
*
* Copyright (c) 2013-2022 Ramon Santamaria (@raysan5)
*
* This software is provided "as-is", without any express or implied warranty. In no event
* will the authors be held liable for any damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose, including commercial
* applications, and to alter it and redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not claim that you
* wrote the original software. If you use this software in a product, an acknowledgment
* in the product documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be misrepresented
* as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*
**********************************************************************************************/
#include "raylib.h" // Declares module functions
// Check if config flags have been externally provided on compilation line
#if !defined(EXTERNAL_CONFIG_FLAGS)
#include "config.h" // Defines module configuration flags
#endif
#if defined(SUPPORT_MODULE_RTEXTURES)
#include "utils.h" // Required for: TRACELOG()
#include "rlgl.h" // OpenGL abstraction layer to OpenGL 1.1, 3.3 or ES2
#include <stdlib.h> // Required for: malloc(), free()
#include <string.h> // Required for: strlen() [Used in ImageTextEx()], strcmp() [Used in LoadImageFromMemory()]
#include <math.h> // Required for: fabsf() [Used in DrawTextureRec()]
#include <stdio.h> // Required for: sprintf() [Used in ExportImageAsCode()]
// Support only desired texture formats on stb_image
#if !defined(SUPPORT_FILEFORMAT_BMP)
#define STBI_NO_BMP
#endif
#if !defined(SUPPORT_FILEFORMAT_PNG)
#define STBI_NO_PNG
#endif
#if !defined(SUPPORT_FILEFORMAT_TGA)
#define STBI_NO_TGA
#endif
#if !defined(SUPPORT_FILEFORMAT_JPG)
#define STBI_NO_JPEG // Image format .jpg and .jpeg
#endif
#if !defined(SUPPORT_FILEFORMAT_PSD)
#define STBI_NO_PSD
#endif
#if !defined(SUPPORT_FILEFORMAT_GIF)
#define STBI_NO_GIF
#endif
#if !defined(SUPPORT_FILEFORMAT_PIC)
#define STBI_NO_PIC
#endif
#if !defined(SUPPORT_FILEFORMAT_HDR)
#define STBI_NO_HDR
#endif
#if defined(SUPPORT_FILEFORMAT_DDS)
#define RL_GPUTEX_SUPPORT_DDS
#endif
#if defined(SUPPORT_FILEFORMAT_PKM)
#define RL_GPUTEX_SUPPORT_PKM
#endif
#if defined(SUPPORT_FILEFORMAT_KTX)
#define RL_GPUTEX_SUPPORT_KTX
#endif
#if defined(SUPPORT_FILEFORMAT_PVR)
#define RL_GPUTEX_SUPPORT_PVR
#endif
#if defined(SUPPORT_FILEFORMAT_ASTC)
#define RL_GPUTEX_SUPPORT_ASTC
#endif
// Image fileformats not supported by default
#define STBI_NO_PIC
#define STBI_NO_PNM // Image format .ppm and .pgm
#if defined(__TINYC__)
#define STBI_NO_SIMD
#endif
#if (defined(SUPPORT_FILEFORMAT_BMP) || \
defined(SUPPORT_FILEFORMAT_PNG) || \
defined(SUPPORT_FILEFORMAT_TGA) || \
defined(SUPPORT_FILEFORMAT_JPG) || \
defined(SUPPORT_FILEFORMAT_PSD) || \
defined(SUPPORT_FILEFORMAT_GIF) || \
defined(SUPPORT_FILEFORMAT_PIC) || \
defined(SUPPORT_FILEFORMAT_HDR))
#define STBI_MALLOC RL_MALLOC
#define STBI_FREE RL_FREE
#define STBI_REALLOC RL_REALLOC
#define STB_IMAGE_IMPLEMENTATION
#include "external/stb_image.h" // Required for: stbi_load_from_file()
// NOTE: Used to read image data (multiple formats support)
#endif
#if (defined(SUPPORT_FILEFORMAT_DDS) || \
defined(SUPPORT_FILEFORMAT_PKM) || \
defined(SUPPORT_FILEFORMAT_KTX) || \
defined(SUPPORT_FILEFORMAT_PVR) || \
defined(SUPPORT_FILEFORMAT_ASTC))
#define RL_GPUTEX_IMPLEMENTATION
#include "external/rl_gputex.h" // Required for: rl_load_xxx_from_memory()
// NOTE: Used to read compressed textures data (multiple formats support)
#endif
#if defined(SUPPORT_FILEFORMAT_QOI)
#define QOI_MALLOC RL_MALLOC
#define QOI_FREE RL_FREE
#define QOI_IMPLEMENTATION
#include "external/qoi.h"
#endif
#if defined(SUPPORT_IMAGE_EXPORT)
#define STBIW_MALLOC RL_MALLOC
#define STBIW_FREE RL_FREE
#define STBIW_REALLOC RL_REALLOC
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "external/stb_image_write.h" // Required for: stbi_write_*()
#endif
#if defined(SUPPORT_IMAGE_GENERATION)
#define STB_PERLIN_IMPLEMENTATION
#include "external/stb_perlin.h" // Required for: stb_perlin_fbm_noise3
#endif
#if defined(SUPPORT_IMAGE_MANIPULATION)
#define STBIR_MALLOC(size,c) ((void)(c), RL_MALLOC(size))
#define STBIR_FREE(ptr,c) ((void)(c), RL_FREE(ptr))
#define STB_IMAGE_RESIZE_IMPLEMENTATION
#include "external/stb_image_resize.h" // Required for: stbir_resize_uint8() [ImageResize()]
#endif
//----------------------------------------------------------------------------------
// Defines and Macros
//----------------------------------------------------------------------------------
#ifndef PIXELFORMAT_UNCOMPRESSED_R5G5B5A1_ALPHA_THRESHOLD
#define PIXELFORMAT_UNCOMPRESSED_R5G5B5A1_ALPHA_THRESHOLD 50 // Threshold over 255 to set alpha as 0
#endif
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
// ...
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
// It's lonely here...
//----------------------------------------------------------------------------------
// Other Modules Functions Declaration (required by text)
//----------------------------------------------------------------------------------
// ...
//----------------------------------------------------------------------------------
// Module specific Functions Declaration
//----------------------------------------------------------------------------------
static Vector4 *LoadImageDataNormalized(Image image); // Load pixel data from image as Vector4 array (float normalized)
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
// Load image from file into CPU memory (RAM)
Image LoadImage(const char *fileName)
{
Image image = { 0 };
#if defined(SUPPORT_FILEFORMAT_PNG) || \
defined(SUPPORT_FILEFORMAT_BMP) || \
defined(SUPPORT_FILEFORMAT_TGA) || \
defined(SUPPORT_FILEFORMAT_JPG) || \
defined(SUPPORT_FILEFORMAT_GIF) || \
defined(SUPPORT_FILEFORMAT_PIC) || \
defined(SUPPORT_FILEFORMAT_HDR) || \
defined(SUPPORT_FILEFORMAT_PSD)
#define STBI_REQUIRED
#endif
// Loading file to memory
unsigned int fileSize = 0;
unsigned char *fileData = LoadFileData(fileName, &fileSize);
// Loading image from memory data
if (fileData != NULL) image = LoadImageFromMemory(GetFileExtension(fileName), fileData, fileSize);
RL_FREE(fileData);
return image;
}
// Load an image from RAW file data
Image LoadImageRaw(const char *fileName, int width, int height, int format, int headerSize)
{
Image image = { 0 };
unsigned int dataSize = 0;
unsigned char *fileData = LoadFileData(fileName, &dataSize);
if (fileData != NULL)
{
unsigned char *dataPtr = fileData;
unsigned int size = GetPixelDataSize(width, height, format);
if (headerSize > 0) dataPtr += headerSize;
image.data = RL_MALLOC(size); // Allocate required memory in bytes
memcpy(image.data, dataPtr, size); // Copy required data to image
image.width = width;
image.height = height;
image.mipmaps = 1;
image.format = format;
RL_FREE(fileData);
}
return image;
}
// Load animated image data
// - Image.data buffer includes all frames: [image#0][image#1][image#2][...]
// - Number of frames is returned through 'frames' parameter
// - All frames are returned in RGBA format
// - Frames delay data is discarded
Image LoadImageAnim(const char *fileName, int *frames)
{
Image image = { 0 };
int frameCount = 1;
#if defined(SUPPORT_FILEFORMAT_GIF)
if (IsFileExtension(fileName, ".gif"))
{
unsigned int dataSize = 0;
unsigned char *fileData = LoadFileData(fileName, &dataSize);
if (fileData != NULL)
{
int comp = 0;
int *delays = NULL;
image.data = stbi_load_gif_from_memory(fileData, dataSize, &delays, &image.width, &image.height, &frameCount, &comp, 4);
image.mipmaps = 1;
image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
RL_FREE(fileData);
RL_FREE(delays); // NOTE: Frames delays are discarded
}
}
#else
if (false) { }
#endif
else image = LoadImage(fileName);
// TODO: Support APNG animated images
*frames = frameCount;
return image;
}
// Load image from memory buffer, fileType refers to extension: i.e. ".png"
// WARNING: File extension must be provided in lower-case
Image LoadImageFromMemory(const char *fileType, const unsigned char *fileData, int dataSize)
{
Image image = { 0 };
if ((false)
#if defined(SUPPORT_FILEFORMAT_PNG)
|| (strcmp(fileType, ".png") == 0)
#endif
#if defined(SUPPORT_FILEFORMAT_BMP)
|| (strcmp(fileType, ".bmp") == 0)
#endif
#if defined(SUPPORT_FILEFORMAT_TGA)
|| (strcmp(fileType, ".tga") == 0)
#endif
#if defined(SUPPORT_FILEFORMAT_JPG)
|| ((strcmp(fileType, ".jpg") == 0) || (strcmp(fileType, ".jpeg") == 0))
#endif
#if defined(SUPPORT_FILEFORMAT_GIF)
|| (strcmp(fileType, ".gif") == 0)
#endif
#if defined(SUPPORT_FILEFORMAT_PIC)
|| (strcmp(fileType, ".pic") == 0)
#endif
#if defined(SUPPORT_FILEFORMAT_PSD)
|| (strcmp(fileType, ".psd") == 0)
#endif
)
{
#if defined(STBI_REQUIRED)
// NOTE: Using stb_image to load images (Supports multiple image formats)
if (fileData != NULL)
{
int comp = 0;
image.data = stbi_load_from_memory(fileData, dataSize, &image.width, &image.height, &comp, 0);
if (image.data != NULL)
{
image.mipmaps = 1;
if (comp == 1) image.format = PIXELFORMAT_UNCOMPRESSED_GRAYSCALE;
else if (comp == 2) image.format = PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA;
else if (comp == 3) image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8;
else if (comp == 4) image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
}
}
#endif
}
#if defined(SUPPORT_FILEFORMAT_HDR)
else if (strcmp(fileType, ".hdr") == 0)
{
#if defined(STBI_REQUIRED)
if (fileData != NULL)
{
int comp = 0;
image.data = stbi_loadf_from_memory(fileData, dataSize, &image.width, &image.height, &comp, 0);
image.mipmaps = 1;
if (comp == 1) image.format = PIXELFORMAT_UNCOMPRESSED_R32;
else if (comp == 3) image.format = PIXELFORMAT_UNCOMPRESSED_R32G32B32;
else if (comp == 4) image.format = PIXELFORMAT_UNCOMPRESSED_R32G32B32A32;
else
{
TRACELOG(LOG_WARNING, "IMAGE: HDR file format not supported");
UnloadImage(image);
}
}
#endif
}
#endif
#if defined(SUPPORT_FILEFORMAT_QOI)
else if (strcmp(fileType, ".qoi") == 0)
{
qoi_desc desc = { 0 };
image.data = qoi_decode(fileData, dataSize, &desc, 4);
image.width = desc.width;
image.height = desc.height;
image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
image.mipmaps = 1;
}
#endif
#if defined(SUPPORT_FILEFORMAT_DDS)
else if (strcmp(fileType, ".dds") == 0)
{
int format = 0;
image.data = rl_load_dds_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps);
}
#endif
#if defined(SUPPORT_FILEFORMAT_PKM)
else if (strcmp(fileType, ".pkm") == 0)
{
image.data = rl_load_pkm_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps);
}
#endif
#if defined(SUPPORT_FILEFORMAT_KTX)
else if (strcmp(fileType, ".ktx") == 0)
{
image.data = rl_load_ktx_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps);
}
#endif
#if defined(SUPPORT_FILEFORMAT_PVR)
else if (strcmp(fileType, ".pvr") == 0)
{
image.data = rl_load_pvr_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps);
}
#endif
#if defined(SUPPORT_FILEFORMAT_ASTC)
else if (strcmp(fileType, ".astc") == 0)
{
image.data = rl_load_astc_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps);
}
#endif
else TRACELOG(LOG_WARNING, "IMAGE: Data format not supported");
if (image.data != NULL) TRACELOG(LOG_INFO, "IMAGE: Data loaded successfully (%ix%i | %s | %i mipmaps)", image.width, image.height, rlGetPixelFormatName(image.format), image.mipmaps);
else TRACELOG(LOG_WARNING, "IMAGE: Failed to load image data");
return image;
}
// Load image from GPU texture data
// NOTE: Compressed texture formats not supported
Image LoadImageFromTexture(Texture2D texture)
{
Image image = { 0 };
if (texture.format < PIXELFORMAT_COMPRESSED_DXT1_RGB)
{
image.data = rlReadTexturePixels(texture.id, texture.width, texture.height, texture.format);
if (image.data != NULL)
{
image.width = texture.width;
image.height = texture.height;
image.format = texture.format;
image.mipmaps = 1;
#if defined(GRAPHICS_API_OPENGL_ES2)
// NOTE: Data retrieved on OpenGL ES 2.0 should be RGBA,
// coming from FBO color buffer attachment, but it seems
// original texture format is retrieved on RPI...
image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
#endif
TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Pixel data retrieved successfully", texture.id);
}
else TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] Failed to retrieve pixel data", texture.id);
}
else TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] Failed to retrieve compressed pixel data", texture.id);
return image;
}
// Load image from screen buffer and (screenshot)
Image LoadImageFromScreen(void)
{
Image image = { 0 };
image.width = GetScreenWidth();
image.height = GetScreenHeight();
image.mipmaps = 1;
image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
image.data = rlReadScreenPixels(image.width, image.height);
return image;
}
// Unload image from CPU memory (RAM)
void UnloadImage(Image image)
{
RL_FREE(image.data);
}
// Export image data to file
// NOTE: File format depends on fileName extension
bool ExportImage(Image image, const char *fileName)
{
int success = 0;
#if defined(SUPPORT_IMAGE_EXPORT)
int channels = 4;
bool allocatedData = false;
unsigned char *imgData = (unsigned char *)image.data;
if (image.format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) channels = 1;
else if (image.format == PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA) channels = 2;
else if (image.format == PIXELFORMAT_UNCOMPRESSED_R8G8B8) channels = 3;
else if (image.format == PIXELFORMAT_UNCOMPRESSED_R8G8B8A8) channels = 4;
else
{
// NOTE: Getting Color array as RGBA unsigned char values
imgData = (unsigned char *)LoadImageColors(image);
allocatedData = true;
}
#if defined(SUPPORT_FILEFORMAT_PNG)
if (IsFileExtension(fileName, ".png"))
{
int dataSize = 0;
unsigned char *fileData = stbi_write_png_to_mem((const unsigned char *)imgData, image.width*channels, image.width, image.height, channels, &dataSize);
success = SaveFileData(fileName, fileData, dataSize);
RL_FREE(fileData);
}
#else
if (false) { }
#endif
#if defined(SUPPORT_FILEFORMAT_BMP)
else if (IsFileExtension(fileName, ".bmp")) success = stbi_write_bmp(fileName, image.width, image.height, channels, imgData);
#endif
#if defined(SUPPORT_FILEFORMAT_TGA)
else if (IsFileExtension(fileName, ".tga")) success = stbi_write_tga(fileName, image.width, image.height, channels, imgData);
#endif
#if defined(SUPPORT_FILEFORMAT_JPG)
else if (IsFileExtension(fileName, ".jpg") ||
IsFileExtension(fileName, ".jpeg")) success = stbi_write_jpg(fileName, image.width, image.height, channels, imgData, 90); // JPG quality: between 1 and 100
#endif
#if defined(SUPPORT_FILEFORMAT_QOI)
else if (IsFileExtension(fileName, ".qoi"))
{
channels = 0;
if (image.format == PIXELFORMAT_UNCOMPRESSED_R8G8B8) channels = 3;
else if (image.format == PIXELFORMAT_UNCOMPRESSED_R8G8B8A8) channels = 4;
else TRACELOG(LOG_WARNING, "IMAGE: Image pixel format must be R8G8B8 or R8G8B8A8");
if ((channels == 3) || (channels == 4))
{
qoi_desc desc = { 0 };
desc.width = image.width;
desc.height = image.height;
desc.channels = channels;
desc.colorspace = QOI_SRGB;
success = qoi_write(fileName, imgData, &desc);
}
}
#endif
#if defined(SUPPORT_FILEFORMAT_KTX)
else if (IsFileExtension(fileName, ".ktx"))
{
success = rl_save_ktx(fileName, image.data, image.width, image.height, image.format, image.mipmaps);
}
#endif
else if (IsFileExtension(fileName, ".raw"))
{
// Export raw pixel data (without header)
// NOTE: It's up to the user to track image parameters
success = SaveFileData(fileName, image.data, GetPixelDataSize(image.width, image.height, image.format));
}
if (allocatedData) RL_FREE(imgData);
#endif // SUPPORT_IMAGE_EXPORT
if (success != 0) TRACELOG(LOG_INFO, "FILEIO: [%s] Image exported successfully", fileName);
else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to export image", fileName);
return success;
}
// Export image as code file (.h) defining an array of bytes
bool ExportImageAsCode(Image image, const char *fileName)
{
bool success = false;
#if defined(SUPPORT_IMAGE_EXPORT)
#ifndef TEXT_BYTES_PER_LINE
#define TEXT_BYTES_PER_LINE 20
#endif
int dataSize = GetPixelDataSize(image.width, image.height, image.format);
// NOTE: Text data buffer size is estimated considering image data size in bytes
// and requiring 6 char bytes for every byte: "0x00, "
char *txtData = (char *)RL_CALLOC(dataSize*6 + 2000, sizeof(char));
int byteCount = 0;
byteCount += sprintf(txtData + byteCount, "////////////////////////////////////////////////////////////////////////////////////////\n");
byteCount += sprintf(txtData + byteCount, "// //\n");
byteCount += sprintf(txtData + byteCount, "// ImageAsCode exporter v1.0 - Image pixel data exported as an array of bytes //\n");
byteCount += sprintf(txtData + byteCount, "// //\n");
byteCount += sprintf(txtData + byteCount, "// more info and bugs-report: github.com/raysan5/raylib //\n");
byteCount += sprintf(txtData + byteCount, "// feedback and support: ray[at]raylib.com //\n");
byteCount += sprintf(txtData + byteCount, "// //\n");
byteCount += sprintf(txtData + byteCount, "// Copyright (c) 2018-2022 Ramon Santamaria (@raysan5) //\n");
byteCount += sprintf(txtData + byteCount, "// //\n");
byteCount += sprintf(txtData + byteCount, "////////////////////////////////////////////////////////////////////////////////////////\n\n");
// Get file name from path and convert variable name to uppercase
char varFileName[256] = { 0 };
strcpy(varFileName, GetFileNameWithoutExt(fileName));
for (int i = 0; varFileName[i] != '\0'; i++) if ((varFileName[i] >= 'a') && (varFileName[i] <= 'z')) { varFileName[i] = varFileName[i] - 32; }
// Add image information
byteCount += sprintf(txtData + byteCount, "// Image data information\n");
byteCount += sprintf(txtData + byteCount, "#define %s_WIDTH %i\n", varFileName, image.width);
byteCount += sprintf(txtData + byteCount, "#define %s_HEIGHT %i\n", varFileName, image.height);
byteCount += sprintf(txtData + byteCount, "#define %s_FORMAT %i // raylib internal pixel format\n\n", varFileName, image.format);
byteCount += sprintf(txtData + byteCount, "static unsigned char %s_DATA[%i] = { ", varFileName, dataSize);
for (int i = 0; i < dataSize - 1; i++) byteCount += sprintf(txtData + byteCount, ((i%TEXT_BYTES_PER_LINE == 0)? "0x%x,\n" : "0x%x, "), ((unsigned char *)image.data)[i]);
byteCount += sprintf(txtData + byteCount, "0x%x };\n", ((unsigned char *)image.data)[dataSize - 1]);
// NOTE: Text data size exported is determined by '\0' (NULL) character
success = SaveFileText(fileName, txtData);
RL_FREE(txtData);
#endif // SUPPORT_IMAGE_EXPORT
if (success != 0) TRACELOG(LOG_INFO, "FILEIO: [%s] Image as code exported successfully", fileName);
else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to export image as code", fileName);
return success;
}
//------------------------------------------------------------------------------------
// Image generation functions
//------------------------------------------------------------------------------------
// Generate image: plain color
Image GenImageColor(int width, int height, Color color)
{
Color *pixels = (Color *)RL_CALLOC(width*height, sizeof(Color));
for (int i = 0; i < width*height; i++) pixels[i] = color;
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
return image;
}
#if defined(SUPPORT_IMAGE_GENERATION)
// Generate image: vertical gradient
Image GenImageGradientV(int width, int height, Color top, Color bottom)
{
Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color));
for (int j = 0; j < height; j++)
{
float factor = (float)j/(float)height;
for (int i = 0; i < width; i++)
{
pixels[j*width + i].r = (int)((float)bottom.r*factor + (float)top.r*(1.f - factor));
pixels[j*width + i].g = (int)((float)bottom.g*factor + (float)top.g*(1.f - factor));
pixels[j*width + i].b = (int)((float)bottom.b*factor + (float)top.b*(1.f - factor));
pixels[j*width + i].a = (int)((float)bottom.a*factor + (float)top.a*(1.f - factor));
}
}
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
return image;
}
// Generate image: horizontal gradient
Image GenImageGradientH(int width, int height, Color left, Color right)
{
Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color));
for (int i = 0; i < width; i++)
{
float factor = (float)i/(float)width;
for (int j = 0; j < height; j++)
{
pixels[j*width + i].r = (int)((float)right.r*factor + (float)left.r*(1.f - factor));
pixels[j*width + i].g = (int)((float)right.g*factor + (float)left.g*(1.f - factor));
pixels[j*width + i].b = (int)((float)right.b*factor + (float)left.b*(1.f - factor));
pixels[j*width + i].a = (int)((float)right.a*factor + (float)left.a*(1.f - factor));
}
}
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
return image;
}
// Generate image: radial gradient
Image GenImageGradientRadial(int width, int height, float density, Color inner, Color outer)
{
Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color));
float radius = (width < height)? (float)width/2.0f : (float)height/2.0f;
float centerX = (float)width/2.0f;
float centerY = (float)height/2.0f;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
float dist = hypotf((float)x - centerX, (float)y - centerY);
float factor = (dist - radius*density)/(radius*(1.0f - density));
factor = (float)fmax(factor, 0.0f);
factor = (float)fmin(factor, 1.f); // dist can be bigger than radius so we have to check
pixels[y*width + x].r = (int)((float)outer.r*factor + (float)inner.r*(1.0f - factor));
pixels[y*width + x].g = (int)((float)outer.g*factor + (float)inner.g*(1.0f - factor));
pixels[y*width + x].b = (int)((float)outer.b*factor + (float)inner.b*(1.0f - factor));
pixels[y*width + x].a = (int)((float)outer.a*factor + (float)inner.a*(1.0f - factor));
}
}
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
return image;
}
// Generate image: checked
Image GenImageChecked(int width, int height, int checksX, int checksY, Color col1, Color col2)
{
Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color));
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
if ((x/checksX + y/checksY)%2 == 0) pixels[y*width + x] = col1;
else pixels[y*width + x] = col2;
}
}
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
return image;
}
// Generate image: white noise
Image GenImageWhiteNoise(int width, int height, float factor)
{
Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color));
for (int i = 0; i < width*height; i++)
{
if (GetRandomValue(0, 99) < (int)(factor*100.0f)) pixels[i] = WHITE;
else pixels[i] = BLACK;
}
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
return image;
}
// Generate image: perlin noise
Image GenImagePerlinNoise(int width, int height, int offsetX, int offsetY, float scale)
{
Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color));
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
float nx = (float)(x + offsetX)*scale/(float)width;
float ny = (float)(y + offsetY)*scale/(float)height;
// Typical values to start playing with:
// lacunarity = ~2.0 -- spacing between successive octaves (use exactly 2.0 for wrapping output)
// gain = 0.5 -- relative weighting applied to each successive octave
// octaves = 6 -- number of "octaves" of noise3() to sum
// NOTE: We need to translate the data from [-1..1] to [0..1]
float p = (stb_perlin_fbm_noise3(nx, ny, 1.0f, 2.0f, 0.5f, 6) + 1.0f)/2.0f;
int intensity = (int)(p*255.0f);
pixels[y*width + x] = (Color){ intensity, intensity, intensity, 255 };
}
}
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
return image;
}
// Generate image: cellular algorithm. Bigger tileSize means bigger cells
Image GenImageCellular(int width, int height, int tileSize)
{
Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color));
int seedsPerRow = width/tileSize;
int seedsPerCol = height/tileSize;
int seedCount = seedsPerRow*seedsPerCol;
Vector2 *seeds = (Vector2 *)RL_MALLOC(seedCount*sizeof(Vector2));
for (int i = 0; i < seedCount; i++)
{
int y = (i/seedsPerRow)*tileSize + GetRandomValue(0, tileSize - 1);
int x = (i%seedsPerRow)*tileSize + GetRandomValue(0, tileSize - 1);
seeds[i] = (Vector2){ (float)x, (float)y };
}
for (int y = 0; y < height; y++)
{
int tileY = y/tileSize;
for (int x = 0; x < width; x++)
{
int tileX = x/tileSize;
float minDistance = 65536.0f; //(float)strtod("Inf", NULL);
// Check all adjacent tiles
for (int i = -1; i < 2; i++)
{
if ((tileX + i < 0) || (tileX + i >= seedsPerRow)) continue;
for (int j = -1; j < 2; j++)
{
if ((tileY + j < 0) || (tileY + j >= seedsPerCol)) continue;
Vector2 neighborSeed = seeds[(tileY + j)*seedsPerRow + tileX + i];
float dist = (float)hypot(x - (int)neighborSeed.x, y - (int)neighborSeed.y);
minDistance = (float)fmin(minDistance, dist);
}
}
// I made this up but it seems to give good results at all tile sizes
int intensity = (int)(minDistance*256.0f/tileSize);
if (intensity > 255) intensity = 255;
pixels[y*width + x] = (Color){ intensity, intensity, intensity, 255 };
}
}
RL_FREE(seeds);
Image image = {
.data = pixels,
.width = width,
.height = height,
.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
.mipmaps = 1
};
return image;
}
#endif // SUPPORT_IMAGE_GENERATION
//------------------------------------------------------------------------------------
// Image manipulation functions
//------------------------------------------------------------------------------------
// Copy an image to a new image
Image ImageCopy(Image image)
{
Image newImage = { 0 };
int width = image.width;
int height = image.height;
int size = 0;
for (int i = 0; i < image.mipmaps; i++)
{
size += GetPixelDataSize(width, height, image.format);
width /= 2;
height /= 2;
// Security check for NPOT textures
if (width < 1) width = 1;
if (height < 1) height = 1;
}
newImage.data = RL_MALLOC(size);
if (newImage.data != NULL)
{
// NOTE: Size must be provided in bytes
memcpy(newImage.data, image.data, size);
newImage.width = image.width;
newImage.height = image.height;
newImage.mipmaps = image.mipmaps;
newImage.format = image.format;
}
return newImage;
}
// Create an image from another image piece
Image ImageFromImage(Image image, Rectangle rec)
{
Image result = { 0 };
int bytesPerPixel = GetPixelDataSize(1, 1, image.format);
result.width = (int)rec.width;
result.height = (int)rec.height;
result.data = RL_CALLOC((int)rec.width*(int)rec.height*bytesPerPixel, 1);
result.format = image.format;
result.mipmaps = 1;
for (int y = 0; y < (int)rec.height; y++)
{
memcpy(((unsigned char *)result.data) + y*(int)rec.width*bytesPerPixel, ((unsigned char *)image.data) + ((y + (int)rec.y)*image.width + (int)rec.x)*bytesPerPixel, (int)rec.width*bytesPerPixel);
}
return result;
}
// Crop an image to area defined by a rectangle
// NOTE: Security checks are performed in case rectangle goes out of bounds
void ImageCrop(Image *image, Rectangle crop)
{
// Security check to avoid program crash
if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return;
// Security checks to validate crop rectangle
if (crop.x < 0) { crop.width += crop.x; crop.x = 0; }
if (crop.y < 0) { crop.height += crop.y; crop.y = 0; }
if ((crop.x + crop.width) > image->width) crop.width = image->width - crop.x;
if ((crop.y + crop.height) > image->height) crop.height = image->height - crop.y;
if ((crop.x > image->width) || (crop.y > image->height))
{
TRACELOG(LOG_WARNING, "IMAGE: Failed to crop, rectangle out of bounds");
return;
}
if (image->mipmaps > 1) TRACELOG(LOG_WARNING, "Image manipulation only applied to base mipmap level");
if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "Image manipulation not supported for compressed formats");
else
{
int bytesPerPixel = GetPixelDataSize(1, 1, image->format);
unsigned char *croppedData = (unsigned char *)RL_MALLOC((int)(crop.width*crop.height)*bytesPerPixel);
// OPTION 1: Move cropped data line-by-line
for (int y = (int)crop.y, offsetSize = 0; y < (int)(crop.y + crop.height); y++)
{
memcpy(croppedData + offsetSize, ((unsigned char *)image->data) + (y*image->width + (int)crop.x)*bytesPerPixel, (int)crop.width*bytesPerPixel);
offsetSize += ((int)crop.width*bytesPerPixel);
}
/*
// OPTION 2: Move cropped data pixel-by-pixel or byte-by-byte
for (int y = (int)crop.y; y < (int)(crop.y + crop.height); y++)
{
for (int x = (int)crop.x; x < (int)(crop.x + crop.width); x++)
{
//memcpy(croppedData + ((y - (int)crop.y)*(int)crop.width + (x - (int)crop.x))*bytesPerPixel, ((unsigned char *)image->data) + (y*image->width + x)*bytesPerPixel, bytesPerPixel);
for (int i = 0; i < bytesPerPixel; i++) croppedData[((y - (int)crop.y)*(int)crop.width + (x - (int)crop.x))*bytesPerPixel + i] = ((unsigned char *)image->data)[(y*image->width + x)*bytesPerPixel + i];