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-rw-r--r--src/FbTk/TextureRender.cc276
1 files changed, 4 insertions, 272 deletions
diff --git a/src/FbTk/TextureRender.cc b/src/FbTk/TextureRender.cc
index a4bb50c..73c1a94 100644
--- a/src/FbTk/TextureRender.cc
+++ b/src/FbTk/TextureRender.cc
@@ -340,280 +340,13 @@ XImage *TextureRender::renderXImage() {
340 image->data = 0; 340 image->data = 0;
341 341
342 unsigned char *d = new unsigned char[image->bytes_per_line * (height + 1)]; 342 unsigned char *d = new unsigned char[image->bytes_per_line * (height + 1)];
343 register unsigned int x, y, dithx, dithy, r, g, b, o, er, eg, eb, offset; 343 register unsigned int x, y, r, g, b, o, offset;
344 344
345 unsigned char *pixel_data = d, *ppixel_data = d; 345 unsigned char *pixel_data = d, *ppixel_data = d;
346 unsigned long pixel; 346 unsigned long pixel;
347 347
348 o = image->bits_per_pixel + ((image->byte_order == MSBFirst) ? 1 : 0); 348 o = image->bits_per_pixel + ((image->byte_order == MSBFirst) ? 1 : 0);
349 349
350 if (control.doDither()) {
351 unsigned char dither4[4][4] = {
352 {0, 4, 1, 5},
353 {6, 2, 7, 3},
354 {1, 5, 0, 4},
355 {7, 3, 6, 2} };
356
357#ifdef ORDEREDPSEUDO
358 unsigned char dither8[8][8] = {
359 { 0, 32, 8, 40, 2, 34, 10, 42 },
360 { 48, 16, 56, 24, 50, 18, 58, 26 },
361 { 12, 44, 4, 36, 14, 46, 6, 38 },
362 { 60, 28, 52, 20, 62, 30, 54, 22 },
363 { 3, 35, 11, 43, 1, 33, 9, 41 },
364 { 51, 19, 59, 27, 49, 17, 57, 25 },
365 { 15, 47, 7, 39, 13, 45, 5, 37 },
366 { 63, 31, 55, 23, 61, 29, 53, 21 } };
367#endif // ORDEREDPSEUDO
368
369 switch (control.visual()->c_class) {
370 case TrueColor:
371 // algorithm: ordered dithering... many many thanks to rasterman
372 // (raster@rasterman.com) for telling me about this... portions of this
373 // code is based off of his code in Imlib
374 for (y = 0, offset = 0; y < height; y++) {
375 dithy = y & 0x3;
376
377 for (x = 0; x < width; x++, offset++) {
378 dithx = x & 0x3;
379 r = red[offset];
380 g = green[offset];
381 b = blue[offset];
382
383 er = r & (red_bits - 1);
384 eg = g & (green_bits - 1);
385 eb = b & (blue_bits - 1);
386
387 r = red_table[r];
388 g = green_table[g];
389 b = blue_table[b];
390
391 if ((dither4[dithy][dithx] < er) && (r < red_table[255])) r++;
392 if ((dither4[dithy][dithx] < eg) && (g < green_table[255])) g++;
393 if ((dither4[dithy][dithx] < eb) && (b < blue_table[255])) b++;
394
395 pixel = (r << red_offset) | (g << green_offset) | (b << blue_offset);
396
397 switch (o) {
398 case 8: // 8bpp
399 *pixel_data++ = pixel;
400 break;
401
402 case 16: // 16bpp LSB
403 *pixel_data++ = pixel;
404 *pixel_data++ = pixel >> 8;
405 break;
406
407 case 17: // 16bpp MSB
408 *pixel_data++ = pixel >> 8;
409 *pixel_data++ = pixel;
410 break;
411
412 case 24: // 24bpp LSB
413 *pixel_data++ = pixel;
414 *pixel_data++ = pixel >> 8;
415 *pixel_data++ = pixel >> 16;
416 break;
417
418 case 25: // 24bpp MSB
419 *pixel_data++ = pixel >> 16;
420 *pixel_data++ = pixel >> 8;
421 *pixel_data++ = pixel;
422 break;
423
424 case 32: // 32bpp LSB
425 *pixel_data++ = pixel;
426 *pixel_data++ = pixel >> 8;
427 *pixel_data++ = pixel >> 16;
428 *pixel_data++ = pixel >> 24;
429 break;
430
431 case 33: // 32bpp MSB
432 *pixel_data++ = pixel >> 24;
433 *pixel_data++ = pixel >> 16;
434 *pixel_data++ = pixel >> 8;
435 *pixel_data++ = pixel;
436 break;
437 }
438 }
439
440 pixel_data = (ppixel_data += image->bytes_per_line);
441 }
442
443 break;
444
445 case StaticColor:
446 case PseudoColor: {
447#ifndef ORDEREDPSEUDO
448 short *terr,
449 *rerr = new short[width + 2],
450 *gerr = new short[width + 2],
451 *berr = new short[width + 2],
452 *nrerr = new short[width + 2],
453 *ngerr = new short[width + 2],
454 *nberr = new short[width + 2];
455 int rr, gg, bb, rer, ger, ber;
456 int dd = 255 / control.colorsPerChannel();
457
458 for (x = 0; x < width; x++) {
459 *(rerr + x) = *(red + x);
460 *(gerr + x) = *(green + x);
461 *(berr + x) = *(blue + x);
462 }
463
464 *(rerr + x) = *(gerr + x) = *(berr + x) = 0;
465#endif // ORDEREDPSEUDO
466
467 for (y = 0, offset = 0; y < height; y++) {
468#ifdef ORDEREDPSEUDO
469 dithy = y & 7;
470
471 for (x = 0; x < width; x++, offset++) {
472 dithx = x & 7;
473
474 r = red[offset];
475 g = green[offset];
476 b = blue[offset];
477
478 er = r & (red_bits - 1);
479 eg = g & (green_bits - 1);
480 eb = b & (blue_bits - 1);
481
482 r = red_table[r];
483 g = green_table[g];
484 b = blue_table[b];
485
486 if ((dither8[dithy][dithx] < er) && (r < red_table[255])) r++;
487 if ((dither8[dithy][dithx] < eg) && (g < green_table[255])) g++;
488 if ((dither8[dithy][dithx] < eb) && (b < blue_table[255])) b++;
489
490 pixel = (r * cpccpc) + (g * cpc) + b;
491 *(pixel_data++) = colors[pixel].pixel;
492 }
493
494 pixel_data = (ppixel_data += image->bytes_per_line);
495 }
496#else // !ORDEREDPSEUDO
497 if (y < (height - 1)) {
498 int i = offset + width;
499 for (x = 0; x < width; x++, i++) {
500 *(nrerr + x) = *(red + i);
501 *(ngerr + x) = *(green + i);
502 *(nberr + x) = *(blue + i);
503 }
504
505 *(nrerr + x) = *(red + (--i));
506 *(ngerr + x) = *(green + i);
507 *(nberr + x) = *(blue + i);
508 }
509
510 for (x = 0; x < width; x++) {
511 rr = rerr[x];
512 gg = gerr[x];
513 bb = berr[x];
514
515 if (rr > 255) rr = 255; else if (rr < 0) rr = 0;
516 if (gg > 255) gg = 255; else if (gg < 0) gg = 0;
517 if (bb > 255) bb = 255; else if (bb < 0) bb = 0;
518
519 r = red_table[rr];
520 g = green_table[gg];
521 b = blue_table[bb];
522
523 rer = rerr[x] - r*dd;
524 ger = gerr[x] - g*dd;
525 ber = berr[x] - b*dd;
526
527 pixel = (r * cpccpc) + (g * cpc) + b;
528 *pixel_data++ = colors[pixel].pixel;
529
530 r = rer >> 1;
531 g = ger >> 1;
532 b = ber >> 1;
533 rerr[x+1] += r;
534 gerr[x+1] += g;
535 berr[x+1] += b;
536 nrerr[x] += r;
537 ngerr[x] += g;
538 nberr[x] += b;
539 }
540
541 offset += width;
542
543 pixel_data = (ppixel_data += image->bytes_per_line);
544
545 terr = rerr;
546 rerr = nrerr;
547 nrerr = terr;
548
549 terr = gerr;
550 gerr = ngerr;
551 ngerr = terr;
552
553 terr = berr;
554 berr = nberr;
555 nberr = terr;
556 }
557
558 delete [] rerr;
559 delete [] gerr;
560 delete [] berr;
561 delete [] nrerr;
562 delete [] ngerr;
563 delete [] nberr;
564#endif // ORDEREDPSUEDO
565
566 } break;
567
568 /*
569 case StaticGray:
570 case GrayScale:
571 for (y = 0, offset = 0; y < height; y++) {
572 dithy = y & 0x3;
573
574 for (x = 0; x < width; x++, offset++) {
575 dithx = x & 0x3;
576
577 r = *(red + offset);
578 g = *(green + offset);
579 b = *(blue + offset);
580
581 er = r & 0x7;
582 eg = g & 0x7;
583 eb = b & 0x7;
584
585 if ((dither[dithy][dithx] < er) && (r < (256 - 8)))
586 r += 8;
587 if ((dither[dithy][dithx] < (eg << 1)) && (g < (256 - 4)))
588 g += 4;
589 if ((dither[dithy][dithx] < eb) && (b < (256 - 8)))
590 b += 8;
591
592 r = *(red_table + r);
593 g = *(green_table + g);
594 b = *(blue_table + b);
595
596 g = ((r * 30) + (g * 59) + (b * 11)) / 100;
597 *pixel_data++ = colors[g].pixel;
598 }
599
600 pixel_data = (ppixel_data += image->bytes_per_line);
601 }
602
603 break;
604 */
605
606 default:
607 _FB_USES_NLS;
608 cerr << "TextureRender::renderXImage(): " <<
609 _FBTK_CONSOLETEXT(Error, UnsupportedVisual, "Unsupported visual", "A visual is a technical term in X") << endl;
610 delete [] d;
611 XDestroyImage(image);
612 return (XImage *) 0;
613 }
614} else { // end do dither
615
616 // no dither:
617 switch (control.visual()->c_class) { 350 switch (control.visual()->c_class) {
618 case StaticColor: 351 case StaticColor:
619 case PseudoColor: 352 case PseudoColor:
@@ -714,10 +447,9 @@ XImage *TextureRender::renderXImage() {
714 XDestroyImage(image); 447 XDestroyImage(image);
715 return (XImage *) 0; 448 return (XImage *) 0;
716 } 449 }
717}
718 450
719image->data = (char *) d; 451 image->data = (char *) d;
720return image; 452 return image;
721} 453}
722 454
723 455
@@ -1840,4 +1572,4 @@ void TextureRender::cdgradient() {
1840 1572
1841} 1573}
1842 1574
1843}; // end namespace FbTk 1575} // end namespace FbTk
generated by cgit v0.11.2 at 2024-12-30 18:21:55 (GMT)