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qssgrenderbasetypes.cpp
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1// Copyright (C) 2022 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
3
5
7
9{
10 switch (format) {
12 return "R8";
14 return "R16";
16 return "R16F";
18 return "R32I";
20 return "R32UI";
22 return "R32F";
24 return "RG8";
26 return "RGBA8";
28 return "RGB8";
30 return "SRGB8";
32 return "SRGB8A8";
34 return "RGB565";
36 return "RGBA5551";
38 return "Alpha8";
40 return "Luminance8";
42 return "Luminance16";
44 return "LuminanceAlpha8";
46 return "RGBA16F";
48 return "RG16F";
50 return "RG32F";
52 return "RGB32F";
54 return "RGBA32F";
56 return "R11G11B10";
58 return "RGB9E5";
60 return "RGBE8";
62 return "RGBA_DXT1";
64 return "RGB_DXT1";
66 return "RGBA_DXT3";
68 return "RGBA_DXT5";
70 return "R11_EAC_UNorm";
72 return "R11_EAC_SNorm";
74 return "RG11_EAC_UNorm";
76 return "RG11_EAC_SNorm";
78 return "RGB8_ETC2";
80 return "SRGB8_ETC2";
82 return "RGB8_PunchThrough_Alpha1_ETC2";
84 return "SRGB8_PunchThrough_Alpha1_ETC2";
86 return "RGBA8_ETC2_EAC";
88 return "SRGB8_Alpha8_ETC2_EAC";
90 return "RGBA_ASTC_4x4";
92 return "RGBA_ASTC_5x4";
94 return "RGBA_ASTC_5x5";
96 return "RGBA_ASTC_6x5";
98 return "RGBA_ASTC_6x6";
100 return "RGBA_ASTC_8x5";
102 return "RGBA_ASTC_8x6";
104 return "RGBA_ASTC_8x8";
106 return "RGBA_ASTC_10x5";
108 return "RGBA_ASTC_10x6";
110 return "RGBA_ASTC_10x8";
112 return "RGBA_ASTC_10x10";
114 return "RGBA_ASTC_12x10";
116 return "RGBA_ASTC_12x12";
118 return "SRGB8_Alpha8_ASTC_4x4";
120 return "SRGB8_Alpha8_ASTC_5x4";
122 return "SRGB8_Alpha8_ASTC_5x5";
124 return "SRGB8_Alpha8_ASTC_6x5";
126 return "SRGB8_Alpha8_ASTC_6x6";
128 return "SRGB8_Alpha8_ASTC_8x5";
130 return "SRGB8_Alpha8_ASTC_8x6";
132 return "SRGB8_Alpha8_ASTC_8x8";
134 return "SRGB8_Alpha8_ASTC_10x5";
136 return "SRGB8_Alpha8_ASTC_10x6";
138 return "SRGB8_Alpha8_ASTC_10x8";
140 return "SRGB8_Alpha8_ASTC_10x10";
142 return "SRGB8_Alpha8_ASTC_12x10";
144 return "SRGB8_Alpha8_ASTC_12x12";
146 return "BC1";
148 return "BC2";
150 return "BC3";
152 return "BC4";
154 return "BC5";
156 return "BC6H";
158 return "BC7";
160 return "Depth16";
162 return "Depth24";
164 return "Depth32";
166 return "Depth24Stencil8";
168 return "RGB10_A2";
170 return "RGB16F";
172 return "RGBA32UI";
174 return "RGB32UI";
176 return "RGBA16UI";
178 return "RGB16UI";
180 return "RGBA8UI";
182 return "RGB8UI";
184 return "RGBA32I";
186 return "RGB32I";
188 return "RGBA16I";
190 return "RGB16I";
192 return "RGBA8I";
194 return "RGB8I";
196 return "Unknown";
197 }
198
199 Q_UNREACHABLE_RETURN(nullptr);
200}
201
203{
204 switch (format) {
205 case R8:
206 return 1;
207 case R16F:
208 return 2;
209 case R16:
210 return 2;
211 case R32I:
212 return 4;
213 case R32F:
214 return 4;
215 case RGBE8:
216 case RGBA8:
217 return 4;
218 case RGB8:
219 return 3;
220 case RGB565:
221 return 2;
222 case RGBA5551:
223 return 2;
224 case Alpha8:
225 return 1;
226 case Luminance8:
227 return 1;
228 case LuminanceAlpha8:
229 return 1;
230 case Depth16:
231 return 2;
232 case Depth24:
233 return 3;
234 case Depth32:
235 return 4;
236 case Depth24Stencil8:
237 return 4;
238 case RGB9E5:
239 return 4;
240 case SRGB8:
241 return 3;
242 case SRGB8A8:
243 return 4;
244 case RGBA16F:
245 return 8;
246 case RG16F:
247 return 4;
248 case RG32F:
249 return 8;
250 case RGBA32F:
251 return 16;
252 case RGB32F:
253 return 12;
254 case R11G11B10:
255 return 4;
256 default:
257 break;
258 }
259 Q_ASSERT(false);
260 return 0;
261}
262
264{
265 switch (format) {
266 case R8:
267 return 1;
268 case R16F:
269 return 1;
270 case R16:
271 return 1;
272 case R32I:
273 return 1;
274 case R32F:
275 return 1;
276 case RGBA8:
277 return 4;
278 case RGB8:
279 return 3;
280 case RGB565:
281 return 3;
282 case RGBA5551:
283 return 4;
284 case Alpha8:
285 return 1;
286 case Luminance8:
287 return 1;
288 case LuminanceAlpha8:
289 return 2;
290 case Depth16:
291 return 1;
292 case Depth24:
293 return 1;
294 case Depth32:
295 return 1;
296 case Depth24Stencil8:
297 return 2;
298 case RGB9E5:
299 return 3;
300 case SRGB8:
301 return 3;
302 case SRGB8A8:
303 return 4;
304 case RGBA16F:
305 return 4;
306 case RG16F:
307 return 2;
308 case RG32F:
309 return 2;
310 case RGBA32F:
311 return 4;
312 case RGB32F:
313 return 3;
314 case R11G11B10:
315 return 3;
316 case RGBE8:
317 return 4;
318 default:
319 break;
320 }
321 Q_ASSERT(false);
322 return 0;
323}
324
325void QSSGRenderTextureFormat::decodeToFloat(void *inPtr, qint32 byteOfs, float *outPtr) const
326{
327 Q_ASSERT(byteOfs >= 0);
328 outPtr[0] = 0.0f;
329 outPtr[1] = 0.0f;
330 outPtr[2] = 0.0f;
331 outPtr[3] = 0.0f;
332 quint8 *src = reinterpret_cast<quint8 *>(inPtr);
333 switch (format) {
334 case Alpha8:
335 outPtr[0] = (float(src[byteOfs])) / 255.0f;
336 break;
337
338 case Luminance8:
339 case LuminanceAlpha8:
340 case R8:
341 case RG8:
342 case RGB8:
343 case RGBA8:
344 case SRGB8:
345 case SRGB8A8:
346 for (qint32 i = 0; i < getSizeofFormat(); ++i) {
347 float val = (float(src[byteOfs + i])) / 255.0f;
348 outPtr[i] = (i < 3) ? std::pow(val, 0.4545454545f) : val;
349 }
350 break;
351 case RGBE8:
352 {
353 float pwd = powf(2.0f, int(src[byteOfs + 3]) - 128);
354 outPtr[0] = float(src[byteOfs + 0]) * pwd / 255.0;
355 outPtr[1] = float(src[byteOfs + 1]) * pwd / 255.0;
356 outPtr[2] = float(src[byteOfs + 2]) * pwd / 255.0;
357 outPtr[3] = 1.0f;
358 } break;
359
360 case R32F:
361 outPtr[0] = reinterpret_cast<float *>(src + byteOfs)[0];
362 break;
363 case RG32F:
364 outPtr[0] = reinterpret_cast<float *>(src + byteOfs)[0];
365 outPtr[1] = reinterpret_cast<float *>(src + byteOfs)[1];
366 break;
367 case RGBA32F:
368 outPtr[0] = reinterpret_cast<float *>(src + byteOfs)[0];
369 outPtr[1] = reinterpret_cast<float *>(src + byteOfs)[1];
370 outPtr[2] = reinterpret_cast<float *>(src + byteOfs)[2];
371 outPtr[3] = reinterpret_cast<float *>(src + byteOfs)[3];
372 break;
373 case RGB32F:
374 outPtr[0] = reinterpret_cast<float *>(src + byteOfs)[0];
375 outPtr[1] = reinterpret_cast<float *>(src + byteOfs)[1];
376 outPtr[2] = reinterpret_cast<float *>(src + byteOfs)[2];
377 break;
378
379 case R16F:
380 case RG16F:
381 case RGBA16F:
382 for (qint32 i = 0; i < (getSizeofFormat() >> 1); ++i) {
383 // NOTE : This only works on the assumption that we don't have any denormals,
384 // Infs or NaNs.
385 // Every pixel in our source image should be "regular"
386 quint16 h = reinterpret_cast<quint16 *>(src + byteOfs)[i];
387 quint32 sign = (h & 0x8000u) << 16u;
388 quint32 exponent = (((((h & 0x7c00u) >> 10) - 15) + 127) << 23);
389 quint32 mantissa = ((h & 0x3ffu) << 13);
390 quint32 result = sign | exponent | mantissa;
391
392 if (h == 0 || h == 0x8000)
393 result = 0;
394 memcpy(outPtr + i, &result, 4);
395 }
396 break;
397
398 case R11G11B10:
399 // place holder
400 Q_ASSERT(false);
401 break;
402
403 default:
404 outPtr[0] = 0.0f;
405 outPtr[1] = 0.0f;
406 outPtr[2] = 0.0f;
407 outPtr[3] = 0.0f;
408 break;
409 }
410}
411void QSSGRenderTextureFormat::encodeToPixel(float *inPtr, void *outPtr, qint32 byteOfs) const
412{
413 struct M8E8
414 {
415 quint8 m;
416 quint8 e;
417 M8E8() : m(0), e(0){
418 }
419 M8E8(const float val) {
420 float l2 = 1.f + std::floor(log2f(val));
421 float mm = val / powf(2.f, l2);
422 m = quint8(mm * 255.f);
423 e = quint8(l2 + 128);
424 }
425 M8E8(const float val, quint8 exp) {
426 if (val <= 0) {
427 m = e = 0;
428 return;
429 }
430 float mm = val / powf(2.f, exp - 128);
431 m = quint8(mm * 255.f);
432 e = exp;
433 }
434 };
435
436 Q_ASSERT(byteOfs >= 0);
437 quint8 *dest = reinterpret_cast<quint8 *>(outPtr);
438 switch (format) {
440 dest[byteOfs] = quint8(inPtr[0] * 255.0f);
441 break;
442
443 case Luminance8:
444 case LuminanceAlpha8:
445 case R8:
446 case RG8:
447 case RGB8:
448 case RGBA8:
449 case SRGB8:
450 case SRGB8A8:
451 for (qint32 i = 0; i < getSizeofFormat(); ++i) {
452 inPtr[i] = (inPtr[i] > 1.0f) ? 1.0f : inPtr[i];
453 if (i < 3)
454 dest[byteOfs + i] = quint8(powf(inPtr[i], 2.2f) * 255.0f);
455 else
456 dest[byteOfs + i] = quint8(inPtr[i] * 255.0f);
457 }
458 break;
459 case RGBE8:
460 {
461 float max = qMax(inPtr[0], qMax(inPtr[1], inPtr[2]));
462 M8E8 ex(max);
463 M8E8 a(inPtr[0], ex.e);
464 M8E8 b(inPtr[1], ex.e);
465 M8E8 c(inPtr[2], ex.e);
466 quint8 *dst = reinterpret_cast<quint8 *>(outPtr) + byteOfs;
467 dst[0] = a.m;
468 dst[1] = b.m;
469 dst[2] = c.m;
470 dst[3] = ex.e;
471 } break;
472
473 case R32F:
474 reinterpret_cast<float *>(dest + byteOfs)[0] = inPtr[0];
475 break;
476 case RG32F:
477 reinterpret_cast<float *>(dest + byteOfs)[0] = inPtr[0];
478 reinterpret_cast<float *>(dest + byteOfs)[1] = inPtr[1];
479 break;
480 case RGBA32F:
481 reinterpret_cast<float *>(dest + byteOfs)[0] = inPtr[0];
482 reinterpret_cast<float *>(dest + byteOfs)[1] = inPtr[1];
483 reinterpret_cast<float *>(dest + byteOfs)[2] = inPtr[2];
484 reinterpret_cast<float *>(dest + byteOfs)[3] = inPtr[3];
485 break;
486 case RGB32F:
487 reinterpret_cast<float *>(dest + byteOfs)[0] = inPtr[0];
488 reinterpret_cast<float *>(dest + byteOfs)[1] = inPtr[1];
489 reinterpret_cast<float *>(dest + byteOfs)[2] = inPtr[2];
490 break;
491
492 case R16F:
493 case RG16F:
494 case RGBA16F:
495 for (qint32 i = 0; i < (getSizeofFormat() >> 1); ++i) {
496 // NOTE : This also has the limitation of not handling infs, NaNs and
497 // denormals, but it should be
498 // sufficient for our purposes.
499 if (inPtr[i] > 65519.0f)
500 inPtr[i] = 65519.0f;
501 if (std::fabs(inPtr[i]) < 6.10352E-5f)
502 inPtr[i] = 0.0f;
503 quint32 f = reinterpret_cast<quint32 *>(inPtr)[i];
504 quint32 sign = (f & 0x80000000) >> 16;
505 qint32 exponent = (f & 0x7f800000) >> 23;
506 quint32 mantissa = (f >> 13) & 0x3ff;
507 exponent = exponent - 112;
508 if (exponent > 31)
509 exponent = 31;
510 if (exponent < 0)
511 exponent = 0;
512 exponent = exponent << 10;
513 reinterpret_cast<quint16 *>(dest + byteOfs)[i] = quint16(sign | quint32(exponent) | mantissa);
514 }
515 break;
516
517 case R11G11B10:
518 // place holder
519 Q_ASSERT(false);
520 break;
521
522 default:
523 dest[byteOfs] = 0;
524 dest[byteOfs + 1] = 0;
525 dest[byteOfs + 2] = 0;
526 dest[byteOfs + 3] = 0;
527 break;
528 }
529}
530
532{
533 switch (value) {
535 return "Clockwise";
537 return "CounterClockwise";
538 }
539
540 Q_UNREACHABLE_RETURN(nullptr);
541}
542
544{
545 switch (value) {
547 return "Front";
549 return "Back";
551 return "FrontAndBack";
553 return "Unknown";
555 return "Disabled";
556 }
557
558 Q_UNREACHABLE_RETURN(nullptr);
559}
560
562{
563 switch (value) {
565 return "NegX";
567 return "NegZ";
569 return "NegY";
571 return "PosY";
573 return "PosX";
575 return "PosZ";
576 }
577
578 Q_UNREACHABLE_RETURN(nullptr);
579}
580
582{
583 switch (value) {
585 return "Unknown";
587 return "Diffuse";
589 return "Specular";
591 return "Environment";
593 return "Bump";
595 return "Normal";
597 return "Emissive";
599 return "Anisotropy";
601 return "Translucent";
602 }
603
604 Q_UNREACHABLE_RETURN(nullptr);
605}
606
608{
609 switch (value) {
611 return "OpaqueOnly";
613 return "Always";
615 return "Never";
617 return "OpaquePrePass";
618 }
619
620 Q_UNREACHABLE_RETURN(nullptr);
621}
622
624{
625 switch (value) {
627 return "UnsignedInt8";
629 return "Int8";
631 return "UnsignedInt16";
633 return "Int16";
635 return "UnsignedInt32";
637 return "Int32";
639 return "UnsignedInt64";
641 return "Int64";
643 return "Float16";
645 return "Float32";
647 return "Float64";
648 }
649
650 Q_UNREACHABLE_RETURN("Unknown");
651}
652
657
659{
660 switch (value) {
662 return "ClampToEdge";
664 return "MirroredRepeat";
666 return "Repeat";
668 return "Unknown";
669 }
670
671 Q_UNREACHABLE_RETURN(nullptr);
672}
673
675{
676 switch (value) {
678 return "Nearest";
680 return "Linear";
682 return "None";
683 }
684
685 Q_UNREACHABLE_RETURN(nullptr);
686}
687
689{
690 switch (face) {
692 return "-X";
694 return "-Z";
696 return "-Y";
698 return "+Y";
700 return "+X";
702 return "+Z";
703 }
704
705 Q_UNREACHABLE_RETURN(nullptr);
706}
707
709{
710 switch (type) {
712 return sizeof(quint8);
714 return sizeof(qint8);
716 return sizeof(quint16);
718 return sizeof(qint16);
720 return sizeof(quint32);
722 return sizeof(qint32);
724 return sizeof(quint64);
726 return sizeof(qint64);
728 return sizeof(qfloat16);
730 return sizeof(float);
732 return sizeof(double);
733 }
734 Q_UNREACHABLE_RETURN(0);
735}
736
static const char * displayName(QSSGRenderTextureCubeFace face)
static const char * toString(QSSGRenderTextureCubeFace value)
static size_t getSizeOfType(QSSGRenderComponentType type)
\keyword 16-bit Floating Point Support\inmodule QtCore \inheaderfile QFloat16
Definition qfloat16.h:47
Combined button and popup list for selecting options.
EGLOutputLayerEXT EGLint EGLAttrib value
[5]
constexpr const T & qMax(const T &a, const T &b)
Definition qminmax.h:42
GLboolean GLboolean GLboolean b
const GLfloat * m
GLboolean GLboolean GLboolean GLboolean a
[7]
GLenum face
GLfloat GLfloat f
GLenum src
GLenum type
GLenum GLenum dst
GLint GLsizei GLsizei GLenum format
GLfloat GLfloat GLfloat GLfloat h
const GLubyte * c
GLuint GLfloat * val
GLint * exponent
GLuint64EXT * result
[6]
#define Q_ASSERT(cond)
Definition qrandom.cpp:47
QSSGRenderTextureCubeFace
QSSGRenderTextureCoordOp
QSSGRenderTextureFilterOp
QSSGRenderTextureTypeValue
QSSGRenderComponentType
unsigned int quint32
Definition qtypes.h:50
short qint16
Definition qtypes.h:47
unsigned short quint16
Definition qtypes.h:48
int qint32
Definition qtypes.h:49
unsigned long long quint64
Definition qtypes.h:61
long long qint64
Definition qtypes.h:60
QT_BEGIN_NAMESPACE typedef signed char qint8
Definition qtypes.h:45
unsigned char quint8
Definition qtypes.h:46
static int sign(int x)
qint32 getNumberOfComponent() const noexcept
void decodeToFloat(void *inPtr, qint32 byteOfs, float *outPtr) const
void encodeToPixel(float *inPtr, void *outPtr, qint32 byteOfs) const
const char * toString() const
qint32 getSizeofFormat() const noexcept