/
MapExpression.cpp
735 lines (609 loc) · 20.1 KB
/
MapExpression.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
#include "MapExpression.h"
#include "itextstream.h"
#include "ifilesystem.h"
#include "imodule.h"
#include <iostream>
#include "os/path.h"
#include "string/convert.h"
#include "math/FloatTools.h" // contains float_to_integer() helper
#include "math/Vector3.h"
#include "RGBAImage.h"
#include "textures/HeightmapCreator.h"
#include "textures/TextureManipulator.h"
#include "string/predicate.h"
/* CONSTANTS */
namespace
{
// Default image maps for optional material stages
const std::string IMAGE_BLACK = "_black.bmp";
const std::string IMAGE_CUBICLIGHT = "_cubiclight.bmp";
const std::string IMAGE_CURRENTRENDER = "_currentrender.bmp";
const std::string IMAGE_DEFAULT = "_default.bmp";
const std::string IMAGE_FLAT = "_flat.bmp";
const std::string IMAGE_FOG = "_fog.bmp";
const std::string IMAGE_NOFALLOFF = "noFalloff.bmp";
const std::string IMAGE_POINTLIGHT1 = "_pointlight1.bmp";
const std::string IMAGE_POINTLIGHT2 = "_pointlight2.bmp";
const std::string IMAGE_POINTLIGHT3 = "_pointlight3.bmp";
const std::string IMAGE_QUADRATIC = "_quadratic.bmp";
const std::string IMAGE_SCRATCH = "_scratch.bmp";
const std::string IMAGE_SPOTLIGHT = "_spotlight.bmp";
const std::string IMAGE_WHITE = "_white.bmp";
inline std::string getBitmapsPath()
{
return module::GlobalModuleRegistry().getApplicationContext().getBitmapsPath();
}
}
namespace shaders {
MapExpressionPtr MapExpression::createForToken(DefTokeniser& token) {
// Switch on the first keyword, to determine what kind of expression this
// is.
// Tr3B: don't convert image names to lower because Unix filesystems are case sensitive
std::string type = token.nextToken();
if (string::iequals(type, "heightmap")) {
return MapExpressionPtr(new HeightMapExpression (token));
}
else if (string::iequals(type, "addnormals")) {
return MapExpressionPtr(new AddNormalsExpression (token));
}
else if (string::iequals(type, "smoothnormals")) {
return MapExpressionPtr(new SmoothNormalsExpression (token));
}
else if (string::iequals(type, "add")) {
return MapExpressionPtr(new AddExpression (token));
}
else if (string::iequals(type, "scale")) {
return MapExpressionPtr(new ScaleExpression (token));
}
else if (string::iequals(type, "invertalpha")) {
return MapExpressionPtr(new InvertAlphaExpression (token));
}
else if (string::iequals(type, "invertcolor")) {
return MapExpressionPtr(new InvertColorExpression (token));
}
else if (string::iequals(type, "makeintensity")) {
return MapExpressionPtr(new MakeIntensityExpression (token));
}
else if (string::iequals(type, "makealpha")) {
return MapExpressionPtr(new MakeAlphaExpression (token));
}
else {
// since we already took away the expression into the variable type, we need to pass type instead of token
return MapExpressionPtr(new ImageExpression(type));
}
}
MapExpressionPtr MapExpression::createForString(std::string str) {
parser::BasicDefTokeniser<std::string> token(str);
return createForToken(token);
}
ImagePtr MapExpression::getResampled(const ImagePtr& input, std::size_t width, std::size_t height)
{
// Don't process precompressed images
if (input->isPrecompressed()) {
rWarning() << "Cannot resample precompressed texture." << std::endl;
return input;
}
// Check if the dimensions differ from the desired ones
if (width != input->getWidth(0) || height != input->getHeight(0)) {
// Allocate a new image buffer
ImagePtr resampled (new RGBAImage(width, height));
// Resample the texture to match the dimensions of the first image
TextureManipulator::instance().resampleTexture(
input->getMipMapPixels(0),
input->getWidth(0), input->getHeight(0),
resampled->getMipMapPixels(0),
width, height, 4
);
return resampled;
}
else {
// Nothing to do here, dimensions match
return input;
}
}
HeightMapExpression::HeightMapExpression (DefTokeniser& token) {
token.assertNextToken("(");
heightMapExp = createForToken(token);
token.assertNextToken(",");
scale = string::convert<float>(token.nextToken());
token.assertNextToken(")");
}
ImagePtr HeightMapExpression::getImage() const {
// Get the heightmap from the contained expression
ImagePtr heightMap = heightMapExp->getImage();
if (heightMap == NULL) return ImagePtr();
// Don't process precompressed images
if (heightMap->isPrecompressed()) {
rWarning() << "Cannot evaluate map expression with precompressed texture." << std::endl;
return heightMap;
}
// Convert the heightmap into a normalmap
ImagePtr normalMap = createNormalmapFromHeightmap(heightMap, scale);
return normalMap;
}
std::string HeightMapExpression::getIdentifier() const {
std::string identifier = "_heightmap_";
identifier.append(heightMapExp->getIdentifier() + string::to_string(scale));
return identifier;
}
AddNormalsExpression::AddNormalsExpression (DefTokeniser& token) {
token.assertNextToken("(");
mapExpOne = createForToken(token);
token.assertNextToken(",");
mapExpTwo = createForToken(token);
token.assertNextToken(")");
}
ImagePtr AddNormalsExpression::getImage() const {
ImagePtr imgOne = mapExpOne->getImage();
if (imgOne == NULL) return ImagePtr();
std::size_t width = imgOne->getWidth(0);
std::size_t height = imgOne->getHeight(0);
ImagePtr imgTwo = mapExpTwo->getImage();
if (imgTwo == NULL) return ImagePtr();
// Don't process precompressed images
if (imgOne->isPrecompressed() || imgTwo->isPrecompressed()) {
rWarning() << "Cannot evaluate map expression with precompressed texture." << std::endl;
return imgOne;
}
// The image must match the dimensions of the first
imgTwo = getResampled(imgTwo, width, height);
ImagePtr result (new RGBAImage(width, height));
byte* pixOne = imgOne->getMipMapPixels(0);
byte* pixTwo = imgTwo->getMipMapPixels(0);
byte* pixOut = result->getMipMapPixels(0);
// iterate through the pixels
for( std::size_t y = 0; y < height; y++ )
{
for( std::size_t x = 0; x < width; x++ )
{
// create the two vectors
Vector3 vectorOne(
static_cast<double>(pixOne[0]),
static_cast<double>(pixOne[1]),
static_cast<double>(pixOne[2])
);
Vector3 vectorTwo(
static_cast<double>(pixTwo[0]),
static_cast<double>(pixTwo[1]),
static_cast<double>(pixTwo[2])
);
// Take the mean value of the two vectors
Vector3 vectorOut = (vectorOne + vectorTwo) * 0.5;
pixOut[0] = static_cast<byte>(float_to_integer(vectorOut.x()));
pixOut[1] = static_cast<byte>(float_to_integer(vectorOut.y()));
pixOut[2] = static_cast<byte>(float_to_integer(vectorOut.z()));
pixOut[3] = 255;
// advance the pixel pointer
pixOne += 4;
pixTwo += 4;
pixOut += 4;
}
}
return result;
}
std::string AddNormalsExpression::getIdentifier() const {
std::string identifier = "_addnormals_";
identifier.append(mapExpOne->getIdentifier() + mapExpTwo->getIdentifier());
return identifier;
}
SmoothNormalsExpression::SmoothNormalsExpression (DefTokeniser& token) {
token.assertNextToken("(");
mapExp = createForToken(token);
token.assertNextToken(")");
}
ImagePtr SmoothNormalsExpression::getImage() const {
ImagePtr normalMap = mapExp->getImage();
if (normalMap == NULL) return ImagePtr();
// Don't process precompressed images
if (normalMap->isPrecompressed()) {
rWarning() << "Cannot evaluate map expression with precompressed texture." << std::endl;
return normalMap;
}
std::size_t width = normalMap->getWidth(0);
std::size_t height = normalMap->getHeight(0);
ImagePtr result (new RGBAImage(width, height));
byte* in = normalMap->getMipMapPixels(0);
byte* out = result->getMipMapPixels(0);
struct KernelElement {
// offset to the current pixel
int dx, dy;
};
// a 3x3 kernel with the surrounding pixels including the pixel itself
const int kernelSize = 9;
KernelElement kernel[kernelSize] = {
{-1, -1 },
{ 0, -1 },
{ 1, -1 },
{ 1, 0 },
{ 1, 1 },
{ 0, 1 },
{-1, 1 },
{-1, 0 },
{ 0, 0 }
};
const float perKernelSize = 1.0f/kernelSize;
// iterate through the pixels
for( std::size_t y = 0; y < height; y++) {
for( std::size_t x = 0; x < width; x++) {
//the new normal vector for this pixel
Vector3 smoothVector(0,0,0);
// calculate the average direction of the surrounding vectors
for (KernelElement* i = kernel; i != kernel + kernelSize; ++i) {
// temporary vector to represent one of the surrounding pixels
byte* pixel = getPixel(in, width, height, x + i->dx, y + i->dy);
Vector3 temp(pixel[0], pixel[1], pixel[2]);
smoothVector += temp;
}
// Take the average normal vector as result
smoothVector *= perKernelSize;
out[0] = static_cast<byte>(float_to_integer(smoothVector.x()));
out[1] = static_cast<byte>(float_to_integer(smoothVector.y()));
out[2] = static_cast<byte>(float_to_integer(smoothVector.z()));
out[3] = 255;
// advance the pixel pointer
out += 4;
}
}
return result;
}
std::string SmoothNormalsExpression::getIdentifier() const {
std::string identifier = "_smoothnormals_";
identifier.append(mapExp->getIdentifier());
return identifier;
}
AddExpression::AddExpression (DefTokeniser& token) {
token.assertNextToken("(");
mapExpOne = createForToken(token);
token.assertNextToken(",");
mapExpTwo = createForToken(token);
token.assertNextToken(")");
}
ImagePtr AddExpression::getImage() const {
ImagePtr imgOne = mapExpOne->getImage();
if (imgOne == NULL) return ImagePtr();
std::size_t width = imgOne->getWidth(0);
std::size_t height = imgOne->getHeight(0);
ImagePtr imgTwo = mapExpTwo->getImage();
if (imgTwo == NULL) return ImagePtr();
// Don't process precompressed images
if (imgOne->isPrecompressed() || imgTwo->isPrecompressed()) {
rWarning() << "Cannot evaluate map expression with precompressed texture." << std::endl;
return imgOne;
}
// Resize the image to match the dimensions of the first
imgTwo = getResampled(imgTwo, width, height);
ImagePtr result (new RGBAImage(width, height));
byte* pixOne = imgOne->getMipMapPixels(0);
byte* pixTwo = imgTwo->getMipMapPixels(0);
byte* pixOut = result->getMipMapPixels(0);
// iterate through the pixels
for( std::size_t y = 0; y < height; y++)
{
for( std::size_t x = 0; x < width; x++)
{
// add the colors
pixOut[0] = static_cast<byte>(float_to_integer((static_cast<float>(pixOne[0]) + pixTwo[0]) * 0.5f));
pixOut[1] = static_cast<byte>(float_to_integer((static_cast<float>(pixOne[1]) + pixTwo[1]) * 0.5f));
pixOut[2] = static_cast<byte>(float_to_integer((static_cast<float>(pixOne[2]) + pixTwo[2]) * 0.5f));
pixOut[3] = static_cast<byte>(float_to_integer((static_cast<float>(pixOne[3]) + pixTwo[3]) * 0.5f));
//advance the pixel pointer
pixOne += 4;
pixTwo += 4;
pixOut += 4;
}
}
return result;
}
std::string AddExpression::getIdentifier() const {
std::string identifier = "_add_";
identifier.append(mapExpOne->getIdentifier() + mapExpTwo->getIdentifier());
return identifier;
}
ScaleExpression::ScaleExpression (DefTokeniser& token) : scaleGreen(0),scaleBlue(0),scaleAlpha(0) {
token.assertNextToken("(");
mapExp = createForToken(token);
token.assertNextToken(",");
scaleRed = string::convert<float>(token.nextToken());
if (token.nextToken() == ")") {
return;
}
scaleGreen = string::convert<float>(token.nextToken());
if (token.nextToken() == ")") {
return;
}
scaleBlue = string::convert<float>(token.nextToken());
if (token.nextToken() == ")") {
return;
}
scaleAlpha = string::convert<float>(token.nextToken());
token.assertNextToken(")");
}
ImagePtr ScaleExpression::getImage() const {
ImagePtr img = mapExp->getImage();
if (img == NULL) return ImagePtr();
// Don't process precompressed images
if (img->isPrecompressed()) {
rWarning() << "Cannot evaluate map expression with precompressed texture." << std::endl;
return img;
}
std::size_t width = img->getWidth(0);
std::size_t height = img->getHeight(0);
if (scaleRed < 0 || scaleGreen < 0 || scaleBlue < 0 || scaleAlpha < 0) {
rConsole() << "[shaders] ScaleExpression: Invalid scale values found." << std::endl;
return img;
}
ImagePtr result (new RGBAImage(width, height));
byte* in = img->getMipMapPixels(0);
byte* out = result->getMipMapPixels(0);
// iterate through the pixels
for( std::size_t y = 0; y < height; ++y)
{
for( std::size_t x = 0; x < width; ++x)
{
// prevent negative values and check for values >255
int red = float_to_integer(static_cast<float>(in[0]) * scaleRed);
out[0] = (red>255) ? 255 : static_cast<byte>(red);
int green = float_to_integer(static_cast<float>(in[1]) * scaleGreen);
out[1] = (green>255) ? 255 : static_cast<byte>(green);
int blue = float_to_integer(static_cast<float>(in[2]) * scaleBlue);
out[2] = (blue>255) ? 255 : static_cast<byte>(blue);
int alpha = float_to_integer(static_cast<float>(in[3]) * scaleAlpha);
out[3] = (alpha>255) ? 255 : static_cast<byte>(alpha);
// advance the pixel pointer
in += 4;
out += 4;
}
}
return result;
}
std::string ScaleExpression::getIdentifier() const {
std::string identifier = "_scale_";
identifier.append(mapExp->getIdentifier() + string::to_string(scaleRed) + string::to_string(scaleGreen) + string::to_string(scaleBlue) + string::to_string(scaleAlpha));
return identifier;
}
InvertAlphaExpression::InvertAlphaExpression (DefTokeniser& token) {
token.assertNextToken("(");
mapExp = createForToken(token);
token.assertNextToken(")");
}
ImagePtr InvertAlphaExpression::getImage() const {
ImagePtr img = mapExp->getImage();
if (img == NULL) return ImagePtr();
// Don't process precompressed images
if (img->isPrecompressed()) {
rWarning() << "Cannot evaluate map expression with precompressed texture." << std::endl;
return img;
}
std::size_t width = img->getWidth(0);
std::size_t height = img->getHeight(0);
ImagePtr result (new RGBAImage(width, height));
byte* in = img->getMipMapPixels(0);
byte* out = result->getMipMapPixels(0);
// iterate through the pixels
for( std::size_t y = 0; y < height; ++y)
{
for( std::size_t x = 0; x < width; ++x)
{
out[0] = in[0];
out[1] = in[1];
out[2] = in[2];
out[3] = 255 - in[3];
// advance the pixel pointer
in += 4;
out += 4;
}
}
return result;
}
std::string InvertAlphaExpression::getIdentifier() const {
std::string identifier = "_invertalpha_";
identifier.append(mapExp->getIdentifier());
return identifier;
}
InvertColorExpression::InvertColorExpression (DefTokeniser& token) {
token.assertNextToken("(");
mapExp = createForToken(token);
token.assertNextToken(")");
}
ImagePtr InvertColorExpression::getImage() const {
ImagePtr img = mapExp->getImage();
if (img == NULL) return ImagePtr();
// Don't process precompressed images
if (img->isPrecompressed()) {
rWarning() << "Cannot evaluate map expression with precompressed texture." << std::endl;
return img;
}
std::size_t width = img->getWidth(0);
std::size_t height = img->getHeight(0);
ImagePtr result (new RGBAImage(width, height));
byte* in = img->getMipMapPixels(0);
byte* out = result->getMipMapPixels(0);
// iterate through the pixels
for( std::size_t y = 0; y < height; y++) {
for( std::size_t x = 0; x < width; x++) {
out[0] = 255 - in[0];
out[1] = 255 - in[1];
out[2] = 255 - in[2];
out[3] = in[3];
// advance the pixel pointer
in += 4;
out += 4;
}
}
return result;
}
std::string InvertColorExpression::getIdentifier() const {
std::string identifier = "_invertcolor_";
identifier.append(mapExp->getIdentifier());
return identifier;
}
MakeIntensityExpression::MakeIntensityExpression (DefTokeniser& token) {
token.assertNextToken("(");
mapExp = createForToken(token);
token.assertNextToken(")");
}
ImagePtr MakeIntensityExpression::getImage() const {
ImagePtr img = mapExp->getImage();
if (img == NULL) return ImagePtr();
// Don't process precompressed images
if (img->isPrecompressed()) {
rWarning() << "Cannot evaluate map expression with precompressed texture." << std::endl;
return img;
}
std::size_t width = img->getWidth(0);
std::size_t height = img->getHeight(0);
ImagePtr result (new RGBAImage(width, height));
byte* in = img->getMipMapPixels(0);
byte* out = result->getMipMapPixels(0);
// iterate through the pixels
for( std::size_t y = 0; y < height; ++y)
{
for( std::size_t x = 0; x < width; ++x)
{
out[0] = in[0];
out[1] = in[0];
out[2] = in[0];
out[3] = in[0];
// advance the pixel pointer
in += 4;
out += 4;
}
}
return result;
}
std::string MakeIntensityExpression::getIdentifier() const {
std::string identifier = "_makeintensity_";
identifier.append(mapExp->getIdentifier());
return identifier;
}
MakeAlphaExpression::MakeAlphaExpression (DefTokeniser& token) {
token.assertNextToken("(");
mapExp = createForToken(token);
token.assertNextToken(")");
}
ImagePtr MakeAlphaExpression::getImage() const {
ImagePtr img = mapExp->getImage();
if (img == NULL) return ImagePtr();
// Don't process precompressed images
if (img->isPrecompressed()) {
rWarning() << "Cannot evaluate map expression with precompressed texture." << std::endl;
return img;
}
std::size_t width = img->getWidth(0);
std::size_t height = img->getHeight(0);
ImagePtr result (new RGBAImage(width, height));
byte* in = img->getMipMapPixels(0);
byte* out = result->getMipMapPixels(0);
// iterate through the pixels
for( std::size_t y = 0; y < height; y++)
{
for( std::size_t x = 0; x < width; x++)
{
out[0] = 255;
out[1] = 255;
out[2] = 255;
out[3] = (in[0] + in[1] + in[2])/3;
// advance the pixel pointer
in += 4;
out += 4;
}
}
return result;
}
std::string MakeAlphaExpression::getIdentifier() const {
std::string identifier = "_makealpha_";
identifier.append(mapExp->getIdentifier());
return identifier;
}
/* ImageExpression */
ImageExpression::ImageExpression(const std::string& imgName)
{
// Replace backslashes with forward slashes and strip of
// the file extension of the provided token, and store
// the result in the provided string.
_imgName = os::standardPath(imgName).substr(0, imgName.rfind("."));
}
ImagePtr ImageExpression::getImage() const
{
// Check for some image keywords and load the correct file
if (_imgName == "_black") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_BLACK
);
}
else if (_imgName == "_cubiclight") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_CUBICLIGHT
);
}
else if (_imgName == "_currentRender") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_CURRENTRENDER
);
}
else if (_imgName == "_default") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_DEFAULT
);
}
else if (_imgName == "_flat") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_FLAT
);
}
else if (_imgName == "_fog") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_FOG
);
}
else if (_imgName == "_nofalloff") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_NOFALLOFF
);
}
else if (_imgName == "_pointlight1") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_POINTLIGHT1
);
}
else if (_imgName == "_pointlight2") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_POINTLIGHT2
);
}
else if (_imgName == "_pointlight3") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_POINTLIGHT3
);
}
else if (_imgName == "_quadratic") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_QUADRATIC
);
}
else if (_imgName == "_scratch") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_SCRATCH
);
}
else if (_imgName == "_spotlight") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_SPOTLIGHT
);
}
else if (_imgName == "_white") {
return GlobalImageLoader().imageFromFile(
getBitmapsPath() + IMAGE_WHITE
);
}
else
{
// this is a normal material image, so we load the image from VFS
return GlobalImageLoader().imageFromVFS(_imgName);
}
}
std::string ImageExpression::getIdentifier() const
{
return _imgName;
}
} // namespace shaders