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[mesa.git] / src / mesa / main / pack.c
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009-2010 VMware, Inc. All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THEA AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 /**
27 * \file pack.c
28 * Image and pixel span packing and unpacking.
29 */
30
31
32 #include "glheader.h"
33 #include "colormac.h"
34 #include "enums.h"
35 #include "image.h"
36 #include "imports.h"
37 #include "mtypes.h"
38 #include "pack.h"
39 #include "pixeltransfer.h"
40 #include "imports.h"
41 #include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
42 #include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
43
44
45 /**
46 * NOTE:
47 * Normally, BYTE_TO_FLOAT(0) returns 0.00392 That causes problems when
48 * we later convert the float to a packed integer value (such as for
49 * GL_RGB5_A1) because we'll wind up with a non-zero value.
50 *
51 * We redefine the macros here so zero is handled correctly.
52 */
53 #undef BYTE_TO_FLOAT
54 #define BYTE_TO_FLOAT(B) ((B) == 0 ? 0.0F : ((2.0F * (B) + 1.0F) * (1.0F/255.0F)))
55
56 #undef SHORT_TO_FLOAT
57 #define SHORT_TO_FLOAT(S) ((S) == 0 ? 0.0F : ((2.0F * (S) + 1.0F) * (1.0F/65535.0F)))
58
59
60
61 /** Compute ceiling of integer quotient of A divided by B. */
62 #define CEILING( A, B ) ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )
63
64
65 /**
66 * Flip the 8 bits in each byte of the given array.
67 *
68 * \param p array.
69 * \param n number of bytes.
70 *
71 * \todo try this trick to flip bytes someday:
72 * \code
73 * v = ((v & 0x55555555) << 1) | ((v >> 1) & 0x55555555);
74 * v = ((v & 0x33333333) << 2) | ((v >> 2) & 0x33333333);
75 * v = ((v & 0x0f0f0f0f) << 4) | ((v >> 4) & 0x0f0f0f0f);
76 * \endcode
77 */
78 static void
79 flip_bytes( GLubyte *p, GLuint n )
80 {
81 GLuint i, a, b;
82 for (i = 0; i < n; i++) {
83 b = (GLuint) p[i]; /* words are often faster than bytes */
84 a = ((b & 0x01) << 7) |
85 ((b & 0x02) << 5) |
86 ((b & 0x04) << 3) |
87 ((b & 0x08) << 1) |
88 ((b & 0x10) >> 1) |
89 ((b & 0x20) >> 3) |
90 ((b & 0x40) >> 5) |
91 ((b & 0x80) >> 7);
92 p[i] = (GLubyte) a;
93 }
94 }
95
96
97
98 /*
99 * Unpack a 32x32 pixel polygon stipple from user memory using the
100 * current pixel unpack settings.
101 */
102 void
103 _mesa_unpack_polygon_stipple( const GLubyte *pattern, GLuint dest[32],
104 const struct gl_pixelstore_attrib *unpacking )
105 {
106 GLubyte *ptrn = (GLubyte *) _mesa_unpack_bitmap(32, 32, pattern, unpacking);
107 if (ptrn) {
108 /* Convert pattern from GLubytes to GLuints and handle big/little
109 * endian differences
110 */
111 GLubyte *p = ptrn;
112 GLint i;
113 for (i = 0; i < 32; i++) {
114 dest[i] = (p[0] << 24)
115 | (p[1] << 16)
116 | (p[2] << 8)
117 | (p[3] );
118 p += 4;
119 }
120 free(ptrn);
121 }
122 }
123
124
125 /*
126 * Pack polygon stipple into user memory given current pixel packing
127 * settings.
128 */
129 void
130 _mesa_pack_polygon_stipple( const GLuint pattern[32], GLubyte *dest,
131 const struct gl_pixelstore_attrib *packing )
132 {
133 /* Convert pattern from GLuints to GLubytes to handle big/little
134 * endian differences.
135 */
136 GLubyte ptrn[32*4];
137 GLint i;
138 for (i = 0; i < 32; i++) {
139 ptrn[i * 4 + 0] = (GLubyte) ((pattern[i] >> 24) & 0xff);
140 ptrn[i * 4 + 1] = (GLubyte) ((pattern[i] >> 16) & 0xff);
141 ptrn[i * 4 + 2] = (GLubyte) ((pattern[i] >> 8 ) & 0xff);
142 ptrn[i * 4 + 3] = (GLubyte) ((pattern[i] ) & 0xff);
143 }
144
145 _mesa_pack_bitmap(32, 32, ptrn, dest, packing);
146 }
147
148
149 /*
150 * Unpack bitmap data. Resulting data will be in most-significant-bit-first
151 * order with row alignment = 1 byte.
152 */
153 GLvoid *
154 _mesa_unpack_bitmap( GLint width, GLint height, const GLubyte *pixels,
155 const struct gl_pixelstore_attrib *packing )
156 {
157 GLint bytes, row, width_in_bytes;
158 GLubyte *buffer, *dst;
159
160 if (!pixels)
161 return NULL;
162
163 /* Alloc dest storage */
164 bytes = ((width + 7) / 8 * height);
165 buffer = (GLubyte *) malloc( bytes );
166 if (!buffer)
167 return NULL;
168
169 width_in_bytes = CEILING( width, 8 );
170 dst = buffer;
171 for (row = 0; row < height; row++) {
172 const GLubyte *src = (const GLubyte *)
173 _mesa_image_address2d(packing, pixels, width, height,
174 GL_COLOR_INDEX, GL_BITMAP, row, 0);
175 if (!src) {
176 free(buffer);
177 return NULL;
178 }
179
180 if ((packing->SkipPixels & 7) == 0) {
181 memcpy( dst, src, width_in_bytes );
182 if (packing->LsbFirst) {
183 flip_bytes( dst, width_in_bytes );
184 }
185 }
186 else {
187 /* handling SkipPixels is a bit tricky (no pun intended!) */
188 GLint i;
189 if (packing->LsbFirst) {
190 GLubyte srcMask = 1 << (packing->SkipPixels & 0x7);
191 GLubyte dstMask = 128;
192 const GLubyte *s = src;
193 GLubyte *d = dst;
194 *d = 0;
195 for (i = 0; i < width; i++) {
196 if (*s & srcMask) {
197 *d |= dstMask;
198 }
199 if (srcMask == 128) {
200 srcMask = 1;
201 s++;
202 }
203 else {
204 srcMask = srcMask << 1;
205 }
206 if (dstMask == 1) {
207 dstMask = 128;
208 d++;
209 *d = 0;
210 }
211 else {
212 dstMask = dstMask >> 1;
213 }
214 }
215 }
216 else {
217 GLubyte srcMask = 128 >> (packing->SkipPixels & 0x7);
218 GLubyte dstMask = 128;
219 const GLubyte *s = src;
220 GLubyte *d = dst;
221 *d = 0;
222 for (i = 0; i < width; i++) {
223 if (*s & srcMask) {
224 *d |= dstMask;
225 }
226 if (srcMask == 1) {
227 srcMask = 128;
228 s++;
229 }
230 else {
231 srcMask = srcMask >> 1;
232 }
233 if (dstMask == 1) {
234 dstMask = 128;
235 d++;
236 *d = 0;
237 }
238 else {
239 dstMask = dstMask >> 1;
240 }
241 }
242 }
243 }
244 dst += width_in_bytes;
245 }
246
247 return buffer;
248 }
249
250
251 /*
252 * Pack bitmap data.
253 */
254 void
255 _mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source,
256 GLubyte *dest, const struct gl_pixelstore_attrib *packing )
257 {
258 GLint row, width_in_bytes;
259 const GLubyte *src;
260
261 if (!source)
262 return;
263
264 width_in_bytes = CEILING( width, 8 );
265 src = source;
266 for (row = 0; row < height; row++) {
267 GLubyte *dst = (GLubyte *) _mesa_image_address2d(packing, dest,
268 width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0);
269 if (!dst)
270 return;
271
272 if ((packing->SkipPixels & 7) == 0) {
273 memcpy( dst, src, width_in_bytes );
274 if (packing->LsbFirst) {
275 flip_bytes( dst, width_in_bytes );
276 }
277 }
278 else {
279 /* handling SkipPixels is a bit tricky (no pun intended!) */
280 GLint i;
281 if (packing->LsbFirst) {
282 GLubyte srcMask = 128;
283 GLubyte dstMask = 1 << (packing->SkipPixels & 0x7);
284 const GLubyte *s = src;
285 GLubyte *d = dst;
286 *d = 0;
287 for (i = 0; i < width; i++) {
288 if (*s & srcMask) {
289 *d |= dstMask;
290 }
291 if (srcMask == 1) {
292 srcMask = 128;
293 s++;
294 }
295 else {
296 srcMask = srcMask >> 1;
297 }
298 if (dstMask == 128) {
299 dstMask = 1;
300 d++;
301 *d = 0;
302 }
303 else {
304 dstMask = dstMask << 1;
305 }
306 }
307 }
308 else {
309 GLubyte srcMask = 128;
310 GLubyte dstMask = 128 >> (packing->SkipPixels & 0x7);
311 const GLubyte *s = src;
312 GLubyte *d = dst;
313 *d = 0;
314 for (i = 0; i < width; i++) {
315 if (*s & srcMask) {
316 *d |= dstMask;
317 }
318 if (srcMask == 1) {
319 srcMask = 128;
320 s++;
321 }
322 else {
323 srcMask = srcMask >> 1;
324 }
325 if (dstMask == 1) {
326 dstMask = 128;
327 d++;
328 *d = 0;
329 }
330 else {
331 dstMask = dstMask >> 1;
332 }
333 }
334 }
335 }
336 src += width_in_bytes;
337 }
338 }
339
340
341 /**
342 * Get indexes of color components for a basic color format, such as
343 * GL_RGBA, GL_RED, GL_LUMINANCE_ALPHA, etc. Return -1 for indexes
344 * that do not apply.
345 */
346 static void
347 get_component_indexes(GLenum format,
348 GLint *redIndex,
349 GLint *greenIndex,
350 GLint *blueIndex,
351 GLint *alphaIndex,
352 GLint *luminanceIndex,
353 GLint *intensityIndex)
354 {
355 *redIndex = -1;
356 *greenIndex = -1;
357 *blueIndex = -1;
358 *alphaIndex = -1;
359 *luminanceIndex = -1;
360 *intensityIndex = -1;
361
362 switch (format) {
363 case GL_LUMINANCE:
364 case GL_LUMINANCE_INTEGER_EXT:
365 *luminanceIndex = 0;
366 break;
367 case GL_LUMINANCE_ALPHA:
368 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
369 *luminanceIndex = 0;
370 *alphaIndex = 1;
371 break;
372 case GL_INTENSITY:
373 *intensityIndex = 0;
374 break;
375 case GL_RED:
376 case GL_RED_INTEGER_EXT:
377 *redIndex = 0;
378 break;
379 case GL_GREEN:
380 case GL_GREEN_INTEGER_EXT:
381 *greenIndex = 0;
382 break;
383 case GL_BLUE:
384 case GL_BLUE_INTEGER_EXT:
385 *blueIndex = 0;
386 break;
387 case GL_ALPHA:
388 case GL_ALPHA_INTEGER_EXT:
389 *alphaIndex = 0;
390 break;
391 case GL_RG:
392 case GL_RG_INTEGER:
393 *redIndex = 0;
394 *greenIndex = 1;
395 break;
396 case GL_RGB:
397 case GL_RGB_INTEGER_EXT:
398 *redIndex = 0;
399 *greenIndex = 1;
400 *blueIndex = 2;
401 break;
402 case GL_BGR:
403 case GL_BGR_INTEGER_EXT:
404 *blueIndex = 0;
405 *greenIndex = 1;
406 *redIndex = 2;
407 break;
408 case GL_RGBA:
409 case GL_RGBA_INTEGER_EXT:
410 *redIndex = 0;
411 *greenIndex = 1;
412 *blueIndex = 2;
413 *alphaIndex = 3;
414 break;
415 case GL_BGRA:
416 case GL_BGRA_INTEGER:
417 *redIndex = 2;
418 *greenIndex = 1;
419 *blueIndex = 0;
420 *alphaIndex = 3;
421 break;
422 case GL_ABGR_EXT:
423 *redIndex = 3;
424 *greenIndex = 2;
425 *blueIndex = 1;
426 *alphaIndex = 0;
427 break;
428 case GL_DU8DV8_ATI:
429 case GL_DUDV_ATI:
430 *redIndex = 0;
431 *greenIndex = 1;
432 break;
433 default:
434 assert(0 && "bad format in get_component_indexes()");
435 }
436 }
437
438
439
440 /**
441 * For small integer types, return the min and max possible values.
442 * Used for clamping floats to unscaled integer types.
443 * \return GL_TRUE if type is handled, GL_FALSE otherwise.
444 */
445 static GLboolean
446 get_type_min_max(GLenum type, GLfloat *min, GLfloat *max)
447 {
448 switch (type) {
449 case GL_BYTE:
450 *min = -128.0;
451 *max = 127.0;
452 return GL_TRUE;
453 case GL_UNSIGNED_BYTE:
454 *min = 0.0;
455 *max = 255.0;
456 return GL_TRUE;
457 case GL_SHORT:
458 *min = -32768.0;
459 *max = 32767.0;
460 return GL_TRUE;
461 case GL_UNSIGNED_SHORT:
462 *min = 0.0;
463 *max = 65535.0;
464 return GL_TRUE;
465 default:
466 return GL_FALSE;
467 }
468 }
469
470
471
472 /**
473 * Used to pack an array [][4] of RGBA float colors as specified
474 * by the dstFormat, dstType and dstPacking. Used by glReadPixels.
475 * Historically, the RGBA values were in [0,1] and rescaled to fit
476 * into GLubytes, etc. But with new integer formats, the RGBA values
477 * may have any value and we don't always rescale when converting to
478 * integers.
479 *
480 * Note: the rgba values will be modified by this function when any pixel
481 * transfer ops are enabled.
482 */
483 void
484 _mesa_pack_rgba_span_float(struct gl_context *ctx, GLuint n, GLfloat rgba[][4],
485 GLenum dstFormat, GLenum dstType,
486 GLvoid *dstAddr,
487 const struct gl_pixelstore_attrib *dstPacking,
488 GLbitfield transferOps)
489 {
490 GLfloat *luminance;
491 const GLint comps = _mesa_components_in_format(dstFormat);
492 const GLboolean intDstFormat = _mesa_is_integer_format(dstFormat);
493 GLuint i;
494
495 if (dstFormat == GL_LUMINANCE ||
496 dstFormat == GL_LUMINANCE_ALPHA ||
497 dstFormat == GL_LUMINANCE_INTEGER_EXT ||
498 dstFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT) {
499 luminance = (GLfloat *) malloc(n * sizeof(GLfloat));
500 if (!luminance) {
501 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel packing");
502 return;
503 }
504 }
505 else {
506 luminance = NULL;
507 }
508
509 if (transferOps) {
510 _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba);
511 }
512
513 /*
514 * Component clamping (besides clamping to [0,1] in
515 * _mesa_apply_rgba_transfer_ops()).
516 */
517 if (intDstFormat) {
518 /* clamping to dest type's min/max values */
519 GLfloat min, max;
520 if (get_type_min_max(dstType, &min, &max)) {
521 for (i = 0; i < n; i++) {
522 rgba[i][RCOMP] = CLAMP(rgba[i][RCOMP], min, max);
523 rgba[i][GCOMP] = CLAMP(rgba[i][GCOMP], min, max);
524 rgba[i][BCOMP] = CLAMP(rgba[i][BCOMP], min, max);
525 rgba[i][ACOMP] = CLAMP(rgba[i][ACOMP], min, max);
526 }
527 }
528 }
529 else if (dstFormat == GL_LUMINANCE || dstFormat == GL_LUMINANCE_ALPHA) {
530 /* compute luminance values */
531 if (transferOps & IMAGE_CLAMP_BIT) {
532 for (i = 0; i < n; i++) {
533 GLfloat sum = rgba[i][RCOMP] + rgba[i][GCOMP] + rgba[i][BCOMP];
534 luminance[i] = CLAMP(sum, 0.0F, 1.0F);
535 }
536 }
537 else {
538 for (i = 0; i < n; i++) {
539 luminance[i] = rgba[i][RCOMP] + rgba[i][GCOMP] + rgba[i][BCOMP];
540 }
541 }
542 }
543
544 /*
545 * Pack/store the pixels. Ugh! Lots of cases!!!
546 */
547 switch (dstType) {
548 case GL_UNSIGNED_BYTE:
549 {
550 GLubyte *dst = (GLubyte *) dstAddr;
551 switch (dstFormat) {
552 case GL_RED:
553 for (i=0;i<n;i++)
554 dst[i] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
555 break;
556 case GL_GREEN:
557 for (i=0;i<n;i++)
558 dst[i] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
559 break;
560 case GL_BLUE:
561 for (i=0;i<n;i++)
562 dst[i] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
563 break;
564 case GL_ALPHA:
565 for (i=0;i<n;i++)
566 dst[i] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
567 break;
568 case GL_LUMINANCE:
569 for (i=0;i<n;i++)
570 dst[i] = FLOAT_TO_UBYTE(luminance[i]);
571 break;
572 case GL_LUMINANCE_ALPHA:
573 for (i=0;i<n;i++) {
574 dst[i*2+0] = FLOAT_TO_UBYTE(luminance[i]);
575 dst[i*2+1] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
576 }
577 break;
578 case GL_RG:
579 for (i=0;i<n;i++) {
580 dst[i*2+0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
581 dst[i*2+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
582 }
583 break;
584 case GL_RGB:
585 for (i=0;i<n;i++) {
586 dst[i*3+0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
587 dst[i*3+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
588 dst[i*3+2] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
589 }
590 break;
591 case GL_RGBA:
592 for (i=0;i<n;i++) {
593 dst[i*4+0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
594 dst[i*4+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
595 dst[i*4+2] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
596 dst[i*4+3] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
597 }
598 break;
599 case GL_BGR:
600 for (i=0;i<n;i++) {
601 dst[i*3+0] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
602 dst[i*3+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
603 dst[i*3+2] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
604 }
605 break;
606 case GL_BGRA:
607 for (i=0;i<n;i++) {
608 dst[i*4+0] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
609 dst[i*4+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
610 dst[i*4+2] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
611 dst[i*4+3] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
612 }
613 break;
614 case GL_ABGR_EXT:
615 for (i=0;i<n;i++) {
616 dst[i*4+0] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
617 dst[i*4+1] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
618 dst[i*4+2] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
619 dst[i*4+3] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
620 }
621 break;
622 case GL_RED_INTEGER_EXT:
623 for (i=0;i<n;i++) {
624 dst[i] = (GLubyte) rgba[i][RCOMP];
625 }
626 break;
627 case GL_GREEN_INTEGER_EXT:
628 for (i=0;i<n;i++) {
629 dst[i] = (GLubyte) rgba[i][GCOMP];
630 }
631 break;
632 case GL_BLUE_INTEGER_EXT:
633 for (i=0;i<n;i++) {
634 dst[i] = (GLubyte) rgba[i][BCOMP];
635 }
636 break;
637 case GL_ALPHA_INTEGER_EXT:
638 for (i=0;i<n;i++) {
639 dst[i] = (GLubyte) rgba[i][ACOMP];
640 }
641 break;
642 case GL_RGB_INTEGER_EXT:
643 for (i=0;i<n;i++) {
644 dst[i*3+0] = (GLubyte) rgba[i][RCOMP];
645 dst[i*3+1] = (GLubyte) rgba[i][GCOMP];
646 dst[i*3+2] = (GLubyte) rgba[i][BCOMP];
647 }
648 break;
649 case GL_RGBA_INTEGER_EXT:
650 for (i=0;i<n;i++) {
651 dst[i*4+0] = (GLubyte) rgba[i][RCOMP];
652 dst[i*4+1] = (GLubyte) rgba[i][GCOMP];
653 dst[i*4+2] = (GLubyte) rgba[i][BCOMP];
654 dst[i*4+3] = (GLubyte) rgba[i][ACOMP];
655 }
656 break;
657 case GL_BGR_INTEGER_EXT:
658 for (i=0;i<n;i++) {
659 dst[i*3+0] = (GLubyte) rgba[i][BCOMP];
660 dst[i*3+1] = (GLubyte) rgba[i][GCOMP];
661 dst[i*3+2] = (GLubyte) rgba[i][RCOMP];
662 }
663 break;
664 case GL_BGRA_INTEGER_EXT:
665 for (i=0;i<n;i++) {
666 dst[i*4+0] = (GLubyte) rgba[i][BCOMP];
667 dst[i*4+1] = (GLubyte) rgba[i][GCOMP];
668 dst[i*4+2] = (GLubyte) rgba[i][RCOMP];
669 dst[i*4+3] = (GLubyte) rgba[i][ACOMP];
670 }
671 break;
672 case GL_LUMINANCE_INTEGER_EXT:
673 for (i=0;i<n;i++) {
674 dst[i*2+0] = (GLubyte) (rgba[i][RCOMP] +
675 rgba[i][GCOMP] +
676 rgba[i][BCOMP]);
677 dst[i*2+1] = (GLubyte) rgba[i][ACOMP];
678 }
679 break;
680 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
681 for (i=0;i<n;i++) {
682 dst[i] = (GLubyte) (rgba[i][RCOMP] +
683 rgba[i][GCOMP] +
684 rgba[i][BCOMP]);
685 }
686 break;
687 case GL_DUDV_ATI:
688 case GL_DU8DV8_ATI:
689 for (i=0;i<n;i++) {
690 dst[i*2+0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
691 dst[i*2+1] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
692 }
693 break;
694 default:
695 _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
696 }
697 }
698 break;
699 case GL_BYTE:
700 {
701 GLbyte *dst = (GLbyte *) dstAddr;
702 switch (dstFormat) {
703 case GL_RED:
704 for (i=0;i<n;i++)
705 dst[i] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
706 break;
707 case GL_GREEN:
708 for (i=0;i<n;i++)
709 dst[i] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
710 break;
711 case GL_BLUE:
712 for (i=0;i<n;i++)
713 dst[i] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
714 break;
715 case GL_ALPHA:
716 for (i=0;i<n;i++)
717 dst[i] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
718 break;
719 case GL_LUMINANCE:
720 for (i=0;i<n;i++)
721 dst[i] = FLOAT_TO_BYTE(luminance[i]);
722 break;
723 case GL_LUMINANCE_ALPHA:
724 for (i=0;i<n;i++) {
725 dst[i*2+0] = FLOAT_TO_BYTE(luminance[i]);
726 dst[i*2+1] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
727 }
728 break;
729 case GL_RG:
730 for (i=0;i<n;i++) {
731 dst[i*2+0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
732 dst[i*2+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
733 }
734 break;
735 case GL_RGB:
736 for (i=0;i<n;i++) {
737 dst[i*3+0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
738 dst[i*3+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
739 dst[i*3+2] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
740 }
741 break;
742 case GL_RGBA:
743 for (i=0;i<n;i++) {
744 dst[i*4+0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
745 dst[i*4+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
746 dst[i*4+2] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
747 dst[i*4+3] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
748 }
749 break;
750 case GL_BGR:
751 for (i=0;i<n;i++) {
752 dst[i*3+0] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
753 dst[i*3+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
754 dst[i*3+2] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
755 }
756 break;
757 case GL_BGRA:
758 for (i=0;i<n;i++) {
759 dst[i*4+0] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
760 dst[i*4+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
761 dst[i*4+2] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
762 dst[i*4+3] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
763 }
764 break;
765 case GL_ABGR_EXT:
766 for (i=0;i<n;i++) {
767 dst[i*4+0] = FLOAT_TO_BYTE(rgba[i][ACOMP]);
768 dst[i*4+1] = FLOAT_TO_BYTE(rgba[i][BCOMP]);
769 dst[i*4+2] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
770 dst[i*4+3] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
771 }
772 break;
773 case GL_RED_INTEGER_EXT:
774 for (i=0;i<n;i++) {
775 dst[i] = (GLbyte) rgba[i][RCOMP];
776 }
777 break;
778 case GL_GREEN_INTEGER_EXT:
779 for (i=0;i<n;i++) {
780 dst[i] = (GLbyte) rgba[i][GCOMP];
781 }
782 break;
783 case GL_BLUE_INTEGER_EXT:
784 for (i=0;i<n;i++) {
785 dst[i] = (GLbyte) rgba[i][BCOMP];
786 }
787 break;
788 case GL_ALPHA_INTEGER_EXT:
789 for (i=0;i<n;i++) {
790 dst[i] = (GLbyte) rgba[i][ACOMP];
791 }
792 break;
793 case GL_RGB_INTEGER_EXT:
794 for (i=0;i<n;i++) {
795 dst[i*3+0] = (GLbyte) rgba[i][RCOMP];
796 dst[i*3+1] = (GLbyte) rgba[i][GCOMP];
797 dst[i*3+2] = (GLbyte) rgba[i][BCOMP];
798 }
799 break;
800 case GL_RGBA_INTEGER_EXT:
801 for (i=0;i<n;i++) {
802 dst[i*4+0] = (GLbyte) rgba[i][RCOMP];
803 dst[i*4+1] = (GLbyte) rgba[i][GCOMP];
804 dst[i*4+2] = (GLbyte) rgba[i][BCOMP];
805 dst[i*4+3] = (GLbyte) rgba[i][ACOMP];
806 }
807 break;
808 case GL_BGR_INTEGER_EXT:
809 for (i=0;i<n;i++) {
810 dst[i*3+0] = (GLbyte) rgba[i][BCOMP];
811 dst[i*3+1] = (GLbyte) rgba[i][GCOMP];
812 dst[i*3+2] = (GLbyte) rgba[i][RCOMP];
813 }
814 break;
815 case GL_BGRA_INTEGER_EXT:
816 for (i=0;i<n;i++) {
817 dst[i*4+0] = (GLbyte) rgba[i][BCOMP];
818 dst[i*4+1] = (GLbyte) rgba[i][GCOMP];
819 dst[i*4+2] = (GLbyte) rgba[i][RCOMP];
820 dst[i*4+3] = (GLbyte) rgba[i][ACOMP];
821 }
822 break;
823 case GL_LUMINANCE_INTEGER_EXT:
824 for (i=0;i<n;i++) {
825 dst[i*2+0] = (GLbyte) (rgba[i][RCOMP] +
826 rgba[i][GCOMP] +
827 rgba[i][BCOMP]);
828 dst[i*2+1] = (GLbyte) rgba[i][ACOMP];
829 }
830 break;
831 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
832 for (i=0;i<n;i++) {
833 dst[i] = (GLbyte) (rgba[i][RCOMP] +
834 rgba[i][GCOMP] +
835 rgba[i][BCOMP]);
836 }
837 break;
838 case GL_DUDV_ATI:
839 case GL_DU8DV8_ATI:
840 for (i=0;i<n;i++) {
841 dst[i*2+0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
842 dst[i*2+1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
843 }
844 break;
845 default:
846 _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
847 }
848 }
849 break;
850 case GL_UNSIGNED_SHORT:
851 {
852 GLushort *dst = (GLushort *) dstAddr;
853 switch (dstFormat) {
854 case GL_RED:
855 for (i=0;i<n;i++)
856 CLAMPED_FLOAT_TO_USHORT(dst[i], rgba[i][RCOMP]);
857 break;
858 case GL_GREEN:
859 for (i=0;i<n;i++)
860 CLAMPED_FLOAT_TO_USHORT(dst[i], rgba[i][GCOMP]);
861 break;
862 case GL_BLUE:
863 for (i=0;i<n;i++)
864 CLAMPED_FLOAT_TO_USHORT(dst[i], rgba[i][BCOMP]);
865 break;
866 case GL_ALPHA:
867 for (i=0;i<n;i++)
868 CLAMPED_FLOAT_TO_USHORT(dst[i], rgba[i][ACOMP]);
869 break;
870 case GL_LUMINANCE:
871 for (i=0;i<n;i++)
872 UNCLAMPED_FLOAT_TO_USHORT(dst[i], luminance[i]);
873 break;
874 case GL_LUMINANCE_ALPHA:
875 for (i=0;i<n;i++) {
876 UNCLAMPED_FLOAT_TO_USHORT(dst[i*2+0], luminance[i]);
877 CLAMPED_FLOAT_TO_USHORT(dst[i*2+1], rgba[i][ACOMP]);
878 }
879 break;
880 case GL_RG:
881 for (i=0;i<n;i++) {
882 CLAMPED_FLOAT_TO_USHORT(dst[i*2+0], rgba[i][RCOMP]);
883 CLAMPED_FLOAT_TO_USHORT(dst[i*2+1], rgba[i][GCOMP]);
884 }
885 break;
886 case GL_RGB:
887 for (i=0;i<n;i++) {
888 CLAMPED_FLOAT_TO_USHORT(dst[i*3+0], rgba[i][RCOMP]);
889 CLAMPED_FLOAT_TO_USHORT(dst[i*3+1], rgba[i][GCOMP]);
890 CLAMPED_FLOAT_TO_USHORT(dst[i*3+2], rgba[i][BCOMP]);
891 }
892 break;
893 case GL_RGBA:
894 for (i=0;i<n;i++) {
895 CLAMPED_FLOAT_TO_USHORT(dst[i*4+0], rgba[i][RCOMP]);
896 CLAMPED_FLOAT_TO_USHORT(dst[i*4+1], rgba[i][GCOMP]);
897 CLAMPED_FLOAT_TO_USHORT(dst[i*4+2], rgba[i][BCOMP]);
898 CLAMPED_FLOAT_TO_USHORT(dst[i*4+3], rgba[i][ACOMP]);
899 }
900 break;
901 case GL_BGR:
902 for (i=0;i<n;i++) {
903 CLAMPED_FLOAT_TO_USHORT(dst[i*3+0], rgba[i][BCOMP]);
904 CLAMPED_FLOAT_TO_USHORT(dst[i*3+1], rgba[i][GCOMP]);
905 CLAMPED_FLOAT_TO_USHORT(dst[i*3+2], rgba[i][RCOMP]);
906 }
907 break;
908 case GL_BGRA:
909 for (i=0;i<n;i++) {
910 CLAMPED_FLOAT_TO_USHORT(dst[i*4+0], rgba[i][BCOMP]);
911 CLAMPED_FLOAT_TO_USHORT(dst[i*4+1], rgba[i][GCOMP]);
912 CLAMPED_FLOAT_TO_USHORT(dst[i*4+2], rgba[i][RCOMP]);
913 CLAMPED_FLOAT_TO_USHORT(dst[i*4+3], rgba[i][ACOMP]);
914 }
915 break;
916 case GL_ABGR_EXT:
917 for (i=0;i<n;i++) {
918 CLAMPED_FLOAT_TO_USHORT(dst[i*4+0], rgba[i][ACOMP]);
919 CLAMPED_FLOAT_TO_USHORT(dst[i*4+1], rgba[i][BCOMP]);
920 CLAMPED_FLOAT_TO_USHORT(dst[i*4+2], rgba[i][GCOMP]);
921 CLAMPED_FLOAT_TO_USHORT(dst[i*4+3], rgba[i][RCOMP]);
922 }
923 break;
924 case GL_RED_INTEGER_EXT:
925 for (i=0;i<n;i++) {
926 dst[i] = (GLushort) rgba[i][RCOMP];
927 }
928 break;
929 case GL_GREEN_INTEGER_EXT:
930 for (i=0;i<n;i++) {
931 dst[i] = (GLushort) rgba[i][GCOMP];
932 }
933 break;
934 case GL_BLUE_INTEGER_EXT:
935 for (i=0;i<n;i++) {
936 dst[i] = (GLushort) rgba[i][BCOMP];
937 }
938 break;
939 case GL_ALPHA_INTEGER_EXT:
940 for (i=0;i<n;i++) {
941 dst[i] = (GLushort) rgba[i][ACOMP];
942 }
943 break;
944 case GL_RGB_INTEGER_EXT:
945 for (i=0;i<n;i++) {
946 dst[i*3+0] = (GLushort) rgba[i][RCOMP];
947 dst[i*3+1] = (GLushort) rgba[i][GCOMP];
948 dst[i*3+2] = (GLushort) rgba[i][BCOMP];
949 }
950 break;
951 case GL_RGBA_INTEGER_EXT:
952 for (i=0;i<n;i++) {
953 dst[i*4+0] = (GLushort) rgba[i][RCOMP];
954 dst[i*4+1] = (GLushort) rgba[i][GCOMP];
955 dst[i*4+2] = (GLushort) rgba[i][BCOMP];
956 dst[i*4+3] = (GLushort) rgba[i][ACOMP];
957 }
958 break;
959 case GL_BGR_INTEGER_EXT:
960 for (i=0;i<n;i++) {
961 dst[i*3+0] = (GLushort) rgba[i][BCOMP];
962 dst[i*3+1] = (GLushort) rgba[i][GCOMP];
963 dst[i*3+2] = (GLushort) rgba[i][RCOMP];
964 }
965 break;
966 case GL_BGRA_INTEGER_EXT:
967 for (i=0;i<n;i++) {
968 dst[i*4+0] = (GLushort) rgba[i][BCOMP];
969 dst[i*4+1] = (GLushort) rgba[i][GCOMP];
970 dst[i*4+2] = (GLushort) rgba[i][RCOMP];
971 dst[i*4+3] = (GLushort) rgba[i][ACOMP];
972 }
973 break;
974 case GL_LUMINANCE_INTEGER_EXT:
975 for (i=0;i<n;i++) {
976 dst[i*2+0] = (GLushort) (rgba[i][RCOMP] +
977 rgba[i][GCOMP] +
978 rgba[i][BCOMP]);
979 dst[i*2+1] = (GLushort) rgba[i][ACOMP];
980 }
981 break;
982 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
983 for (i=0;i<n;i++) {
984 dst[i] = (GLushort) (rgba[i][RCOMP] +
985 rgba[i][GCOMP] +
986 rgba[i][BCOMP]);
987 }
988 break;
989 case GL_DUDV_ATI:
990 case GL_DU8DV8_ATI:
991 for (i=0;i<n;i++) {
992 dst[i*2+0] = FLOAT_TO_USHORT(rgba[i][RCOMP]);
993 dst[i*2+1] = FLOAT_TO_USHORT(rgba[i][GCOMP]);
994 }
995 break;
996 default:
997 _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
998 }
999 }
1000 break;
1001 case GL_SHORT:
1002 {
1003 GLshort *dst = (GLshort *) dstAddr;
1004 switch (dstFormat) {
1005 case GL_RED:
1006 for (i=0;i<n;i++)
1007 dst[i] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
1008 break;
1009 case GL_GREEN:
1010 for (i=0;i<n;i++)
1011 dst[i] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
1012 break;
1013 case GL_BLUE:
1014 for (i=0;i<n;i++)
1015 dst[i] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
1016 break;
1017 case GL_ALPHA:
1018 for (i=0;i<n;i++)
1019 dst[i] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
1020 break;
1021 case GL_LUMINANCE:
1022 for (i=0;i<n;i++)
1023 dst[i] = FLOAT_TO_SHORT(luminance[i]);
1024 break;
1025 case GL_LUMINANCE_ALPHA:
1026 for (i=0;i<n;i++) {
1027 dst[i*2+0] = FLOAT_TO_SHORT(luminance[i]);
1028 dst[i*2+1] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
1029 }
1030 break;
1031 case GL_RG:
1032 for (i=0;i<n;i++) {
1033 dst[i*2+0] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
1034 dst[i*2+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
1035 }
1036 break;
1037 case GL_RGB:
1038 for (i=0;i<n;i++) {
1039 dst[i*3+0] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
1040 dst[i*3+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
1041 dst[i*3+2] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
1042 }
1043 break;
1044 case GL_RGBA:
1045 for (i=0;i<n;i++) {
1046 dst[i*4+0] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
1047 dst[i*4+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
1048 dst[i*4+2] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
1049 dst[i*4+3] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
1050 }
1051 break;
1052 case GL_BGR:
1053 for (i=0;i<n;i++) {
1054 dst[i*3+0] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
1055 dst[i*3+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
1056 dst[i*3+2] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
1057 }
1058 break;
1059 case GL_BGRA:
1060 for (i=0;i<n;i++) {
1061 dst[i*4+0] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
1062 dst[i*4+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
1063 dst[i*4+2] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
1064 dst[i*4+3] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
1065 }
1066 break;
1067 case GL_ABGR_EXT:
1068 for (i=0;i<n;i++) {
1069 dst[i*4+0] = FLOAT_TO_SHORT(rgba[i][ACOMP]);
1070 dst[i*4+1] = FLOAT_TO_SHORT(rgba[i][BCOMP]);
1071 dst[i*4+2] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
1072 dst[i*4+3] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
1073 }
1074 break;
1075 case GL_RED_INTEGER_EXT:
1076 for (i=0;i<n;i++) {
1077 dst[i] = (GLshort) rgba[i][RCOMP];
1078 }
1079 break;
1080 case GL_GREEN_INTEGER_EXT:
1081 for (i=0;i<n;i++) {
1082 dst[i] = (GLshort) rgba[i][GCOMP];
1083 }
1084 break;
1085 case GL_BLUE_INTEGER_EXT:
1086 for (i=0;i<n;i++) {
1087 dst[i] = (GLshort) rgba[i][BCOMP];
1088 }
1089 break;
1090 case GL_ALPHA_INTEGER_EXT:
1091 for (i=0;i<n;i++) {
1092 dst[i] = (GLshort) rgba[i][ACOMP];
1093 }
1094 break;
1095 case GL_RGB_INTEGER_EXT:
1096 for (i=0;i<n;i++) {
1097 dst[i*3+0] = (GLshort) rgba[i][RCOMP];
1098 dst[i*3+1] = (GLshort) rgba[i][GCOMP];
1099 dst[i*3+2] = (GLshort) rgba[i][BCOMP];
1100 }
1101 break;
1102 case GL_RGBA_INTEGER_EXT:
1103 for (i=0;i<n;i++) {
1104 dst[i*4+0] = (GLshort) rgba[i][RCOMP];
1105 dst[i*4+1] = (GLshort) rgba[i][GCOMP];
1106 dst[i*4+2] = (GLshort) rgba[i][BCOMP];
1107 dst[i*4+3] = (GLshort) rgba[i][ACOMP];
1108 }
1109 break;
1110 case GL_BGR_INTEGER_EXT:
1111 for (i=0;i<n;i++) {
1112 dst[i*3+0] = (GLshort) rgba[i][BCOMP];
1113 dst[i*3+1] = (GLshort) rgba[i][GCOMP];
1114 dst[i*3+2] = (GLshort) rgba[i][RCOMP];
1115 }
1116 break;
1117 case GL_BGRA_INTEGER_EXT:
1118 for (i=0;i<n;i++) {
1119 dst[i*4+0] = (GLshort) rgba[i][BCOMP];
1120 dst[i*4+1] = (GLshort) rgba[i][GCOMP];
1121 dst[i*4+2] = (GLshort) rgba[i][RCOMP];
1122 dst[i*4+3] = (GLshort) rgba[i][ACOMP];
1123 }
1124 break;
1125 case GL_LUMINANCE_INTEGER_EXT:
1126 for (i=0;i<n;i++) {
1127 dst[i*2+0] = (GLshort) (rgba[i][RCOMP] +
1128 rgba[i][GCOMP] +
1129 rgba[i][BCOMP]);
1130 dst[i*2+1] = (GLshort) rgba[i][ACOMP];
1131 }
1132 break;
1133 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
1134 for (i=0;i<n;i++) {
1135 dst[i] = (GLshort) (rgba[i][RCOMP] +
1136 rgba[i][GCOMP] +
1137 rgba[i][BCOMP]);
1138 }
1139 break;
1140 case GL_DUDV_ATI:
1141 case GL_DU8DV8_ATI:
1142 for (i=0;i<n;i++) {
1143 dst[i*2+0] = FLOAT_TO_SHORT(rgba[i][RCOMP]);
1144 dst[i*2+1] = FLOAT_TO_SHORT(rgba[i][GCOMP]);
1145 }
1146 break;
1147 default:
1148 _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
1149 }
1150 }
1151 break;
1152 case GL_UNSIGNED_INT:
1153 {
1154 GLuint *dst = (GLuint *) dstAddr;
1155 switch (dstFormat) {
1156 case GL_RED:
1157 for (i=0;i<n;i++)
1158 dst[i] = FLOAT_TO_UINT(rgba[i][RCOMP]);
1159 break;
1160 case GL_GREEN:
1161 for (i=0;i<n;i++)
1162 dst[i] = FLOAT_TO_UINT(rgba[i][GCOMP]);
1163 break;
1164 case GL_BLUE:
1165 for (i=0;i<n;i++)
1166 dst[i] = FLOAT_TO_UINT(rgba[i][BCOMP]);
1167 break;
1168 case GL_ALPHA:
1169 for (i=0;i<n;i++)
1170 dst[i] = FLOAT_TO_UINT(rgba[i][ACOMP]);
1171 break;
1172 case GL_LUMINANCE:
1173 for (i=0;i<n;i++)
1174 dst[i] = FLOAT_TO_UINT(luminance[i]);
1175 break;
1176 case GL_LUMINANCE_ALPHA:
1177 for (i=0;i<n;i++) {
1178 dst[i*2+0] = FLOAT_TO_UINT(luminance[i]);
1179 dst[i*2+1] = FLOAT_TO_UINT(rgba[i][ACOMP]);
1180 }
1181 break;
1182 case GL_RG:
1183 for (i=0;i<n;i++) {
1184 dst[i*2+0] = FLOAT_TO_UINT(rgba[i][RCOMP]);
1185 dst[i*2+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
1186 }
1187 break;
1188 case GL_RGB:
1189 for (i=0;i<n;i++) {
1190 dst[i*3+0] = FLOAT_TO_UINT(rgba[i][RCOMP]);
1191 dst[i*3+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
1192 dst[i*3+2] = FLOAT_TO_UINT(rgba[i][BCOMP]);
1193 }
1194 break;
1195 case GL_RGBA:
1196 for (i=0;i<n;i++) {
1197 dst[i*4+0] = FLOAT_TO_UINT(rgba[i][RCOMP]);
1198 dst[i*4+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
1199 dst[i*4+2] = FLOAT_TO_UINT(rgba[i][BCOMP]);
1200 dst[i*4+3] = FLOAT_TO_UINT(rgba[i][ACOMP]);
1201 }
1202 break;
1203 case GL_BGR:
1204 for (i=0;i<n;i++) {
1205 dst[i*3+0] = FLOAT_TO_UINT(rgba[i][BCOMP]);
1206 dst[i*3+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
1207 dst[i*3+2] = FLOAT_TO_UINT(rgba[i][RCOMP]);
1208 }
1209 break;
1210 case GL_BGRA:
1211 for (i=0;i<n;i++) {
1212 dst[i*4+0] = FLOAT_TO_UINT(rgba[i][BCOMP]);
1213 dst[i*4+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
1214 dst[i*4+2] = FLOAT_TO_UINT(rgba[i][RCOMP]);
1215 dst[i*4+3] = FLOAT_TO_UINT(rgba[i][ACOMP]);
1216 }
1217 break;
1218 case GL_ABGR_EXT:
1219 for (i=0;i<n;i++) {
1220 dst[i*4+0] = FLOAT_TO_UINT(rgba[i][ACOMP]);
1221 dst[i*4+1] = FLOAT_TO_UINT(rgba[i][BCOMP]);
1222 dst[i*4+2] = FLOAT_TO_UINT(rgba[i][GCOMP]);
1223 dst[i*4+3] = FLOAT_TO_UINT(rgba[i][RCOMP]);
1224 }
1225 break;
1226 case GL_RED_INTEGER_EXT:
1227 for (i=0;i<n;i++) {
1228 dst[i] = (GLuint) rgba[i][RCOMP];
1229 }
1230 break;
1231 case GL_GREEN_INTEGER_EXT:
1232 for (i=0;i<n;i++) {
1233 dst[i] = (GLuint) rgba[i][GCOMP];
1234 }
1235 break;
1236 case GL_BLUE_INTEGER_EXT:
1237 for (i=0;i<n;i++) {
1238 dst[i] = (GLuint) rgba[i][BCOMP];
1239 }
1240 break;
1241 case GL_ALPHA_INTEGER_EXT:
1242 for (i=0;i<n;i++) {
1243 dst[i] = (GLuint) rgba[i][ACOMP];
1244 }
1245 break;
1246 case GL_RGB_INTEGER_EXT:
1247 for (i=0;i<n;i++) {
1248 dst[i*3+0] = (GLuint) rgba[i][RCOMP];
1249 dst[i*3+1] = (GLuint) rgba[i][GCOMP];
1250 dst[i*3+2] = (GLuint) rgba[i][BCOMP];
1251 }
1252 break;
1253 case GL_RGBA_INTEGER_EXT:
1254 for (i=0;i<n;i++) {
1255 dst[i*4+0] = (GLuint) rgba[i][RCOMP];
1256 dst[i*4+1] = (GLuint) rgba[i][GCOMP];
1257 dst[i*4+2] = (GLuint) rgba[i][BCOMP];
1258 dst[i*4+3] = (GLuint) rgba[i][ACOMP];
1259 }
1260 break;
1261 case GL_BGR_INTEGER_EXT:
1262 for (i=0;i<n;i++) {
1263 dst[i*3+0] = (GLuint) rgba[i][BCOMP];
1264 dst[i*3+1] = (GLuint) rgba[i][GCOMP];
1265 dst[i*3+2] = (GLuint) rgba[i][RCOMP];
1266 }
1267 break;
1268 case GL_BGRA_INTEGER_EXT:
1269 for (i=0;i<n;i++) {
1270 dst[i*4+0] = (GLuint) rgba[i][BCOMP];
1271 dst[i*4+1] = (GLuint) rgba[i][GCOMP];
1272 dst[i*4+2] = (GLuint) rgba[i][RCOMP];
1273 dst[i*4+3] = (GLuint) rgba[i][ACOMP];
1274 }
1275 break;
1276 case GL_LUMINANCE_INTEGER_EXT:
1277 for (i=0;i<n;i++) {
1278 dst[i*2+0] = (GLuint) (rgba[i][RCOMP] +
1279 rgba[i][GCOMP] +
1280 rgba[i][BCOMP]);
1281 dst[i*2+1] = (GLuint) rgba[i][ACOMP];
1282 }
1283 break;
1284 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
1285 for (i=0;i<n;i++) {
1286 dst[i] = (GLuint) (rgba[i][RCOMP] +
1287 rgba[i][GCOMP] +
1288 rgba[i][BCOMP]);
1289 }
1290 break;
1291 case GL_DUDV_ATI:
1292 case GL_DU8DV8_ATI:
1293 for (i=0;i<n;i++) {
1294 dst[i*2+0] = FLOAT_TO_UINT(rgba[i][RCOMP]);
1295 dst[i*2+1] = FLOAT_TO_UINT(rgba[i][GCOMP]);
1296 }
1297 break;
1298 default:
1299 _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
1300 }
1301 }
1302 break;
1303 case GL_INT:
1304 {
1305 GLint *dst = (GLint *) dstAddr;
1306 switch (dstFormat) {
1307 case GL_RED:
1308 for (i=0;i<n;i++)
1309 dst[i] = FLOAT_TO_INT(rgba[i][RCOMP]);
1310 break;
1311 case GL_GREEN:
1312 for (i=0;i<n;i++)
1313 dst[i] = FLOAT_TO_INT(rgba[i][GCOMP]);
1314 break;
1315 case GL_BLUE:
1316 for (i=0;i<n;i++)
1317 dst[i] = FLOAT_TO_INT(rgba[i][BCOMP]);
1318 break;
1319 case GL_ALPHA:
1320 for (i=0;i<n;i++)
1321 dst[i] = FLOAT_TO_INT(rgba[i][ACOMP]);
1322 break;
1323 case GL_LUMINANCE:
1324 for (i=0;i<n;i++)
1325 dst[i] = FLOAT_TO_INT(luminance[i]);
1326 break;
1327 case GL_LUMINANCE_ALPHA:
1328 for (i=0;i<n;i++) {
1329 dst[i*2+0] = FLOAT_TO_INT(luminance[i]);
1330 dst[i*2+1] = FLOAT_TO_INT(rgba[i][ACOMP]);
1331 }
1332 break;
1333 case GL_RG:
1334 for (i=0;i<n;i++) {
1335 dst[i*2+0] = FLOAT_TO_INT(rgba[i][RCOMP]);
1336 dst[i*2+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
1337 }
1338 break;
1339 case GL_RGB:
1340 for (i=0;i<n;i++) {
1341 dst[i*3+0] = FLOAT_TO_INT(rgba[i][RCOMP]);
1342 dst[i*3+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
1343 dst[i*3+2] = FLOAT_TO_INT(rgba[i][BCOMP]);
1344 }
1345 break;
1346 case GL_RGBA:
1347 for (i=0;i<n;i++) {
1348 dst[i*4+0] = FLOAT_TO_INT(rgba[i][RCOMP]);
1349 dst[i*4+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
1350 dst[i*4+2] = FLOAT_TO_INT(rgba[i][BCOMP]);
1351 dst[i*4+3] = FLOAT_TO_INT(rgba[i][ACOMP]);
1352 }
1353 break;
1354 case GL_BGR:
1355 for (i=0;i<n;i++) {
1356 dst[i*3+0] = FLOAT_TO_INT(rgba[i][BCOMP]);
1357 dst[i*3+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
1358 dst[i*3+2] = FLOAT_TO_INT(rgba[i][RCOMP]);
1359 }
1360 break;
1361 case GL_BGRA:
1362 for (i=0;i<n;i++) {
1363 dst[i*4+0] = FLOAT_TO_INT(rgba[i][BCOMP]);
1364 dst[i*4+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
1365 dst[i*4+2] = FLOAT_TO_INT(rgba[i][RCOMP]);
1366 dst[i*4+3] = FLOAT_TO_INT(rgba[i][ACOMP]);
1367 }
1368 break;
1369 case GL_ABGR_EXT:
1370 for (i=0;i<n;i++) {
1371 dst[i*4+0] = FLOAT_TO_INT(rgba[i][ACOMP]);
1372 dst[i*4+1] = FLOAT_TO_INT(rgba[i][BCOMP]);
1373 dst[i*4+2] = FLOAT_TO_INT(rgba[i][GCOMP]);
1374 dst[i*4+3] = FLOAT_TO_INT(rgba[i][RCOMP]);
1375 }
1376 break;
1377 case GL_DUDV_ATI:
1378 case GL_DU8DV8_ATI:
1379 for (i=0;i<n;i++) {
1380 dst[i*2+0] = FLOAT_TO_INT(rgba[i][RCOMP]);
1381 dst[i*2+1] = FLOAT_TO_INT(rgba[i][GCOMP]);
1382 }
1383 break;
1384 case GL_RED_INTEGER_EXT:
1385 for (i=0;i<n;i++) {
1386 dst[i] = (GLint) rgba[i][RCOMP];
1387 }
1388 break;
1389 case GL_GREEN_INTEGER_EXT:
1390 for (i=0;i<n;i++) {
1391 dst[i] = (GLint) rgba[i][GCOMP];
1392 }
1393 break;
1394 case GL_BLUE_INTEGER_EXT:
1395 for (i=0;i<n;i++) {
1396 dst[i] = (GLint) rgba[i][BCOMP];
1397 }
1398 break;
1399 case GL_ALPHA_INTEGER_EXT:
1400 for (i=0;i<n;i++) {
1401 dst[i] = (GLint) rgba[i][ACOMP];
1402 }
1403 break;
1404 case GL_RGB_INTEGER_EXT:
1405 for (i=0;i<n;i++) {
1406 dst[i*3+0] = (GLint) rgba[i][RCOMP];
1407 dst[i*3+1] = (GLint) rgba[i][GCOMP];
1408 dst[i*3+2] = (GLint) rgba[i][BCOMP];
1409 }
1410 break;
1411 case GL_RGBA_INTEGER_EXT:
1412 for (i=0;i<n;i++) {
1413 dst[i*4+0] = (GLint) rgba[i][RCOMP];
1414 dst[i*4+1] = (GLint) rgba[i][GCOMP];
1415 dst[i*4+2] = (GLint) rgba[i][BCOMP];
1416 dst[i*4+3] = (GLint) rgba[i][ACOMP];
1417 }
1418 break;
1419 case GL_BGR_INTEGER_EXT:
1420 for (i=0;i<n;i++) {
1421 dst[i*3+0] = (GLint) rgba[i][BCOMP];
1422 dst[i*3+1] = (GLint) rgba[i][GCOMP];
1423 dst[i*3+2] = (GLint) rgba[i][RCOMP];
1424 }
1425 break;
1426 case GL_BGRA_INTEGER_EXT:
1427 for (i=0;i<n;i++) {
1428 dst[i*4+0] = (GLint) rgba[i][BCOMP];
1429 dst[i*4+1] = (GLint) rgba[i][GCOMP];
1430 dst[i*4+2] = (GLint) rgba[i][RCOMP];
1431 dst[i*4+3] = (GLint) rgba[i][ACOMP];
1432 }
1433 break;
1434 case GL_LUMINANCE_INTEGER_EXT:
1435 for (i=0;i<n;i++) {
1436 dst[i*2+0] = (GLint) (rgba[i][RCOMP] +
1437 rgba[i][GCOMP] +
1438 rgba[i][BCOMP]);
1439 dst[i*2+1] = (GLint) rgba[i][ACOMP];
1440 }
1441 break;
1442 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
1443 for (i=0;i<n;i++) {
1444 dst[i] = (GLint) (rgba[i][RCOMP] +
1445 rgba[i][GCOMP] +
1446 rgba[i][BCOMP]);
1447 }
1448 break;
1449 default:
1450 _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
1451 }
1452 }
1453 break;
1454 case GL_FLOAT:
1455 {
1456 GLfloat *dst = (GLfloat *) dstAddr;
1457 switch (dstFormat) {
1458 case GL_RED:
1459 for (i=0;i<n;i++)
1460 dst[i] = rgba[i][RCOMP];
1461 break;
1462 case GL_GREEN:
1463 for (i=0;i<n;i++)
1464 dst[i] = rgba[i][GCOMP];
1465 break;
1466 case GL_BLUE:
1467 for (i=0;i<n;i++)
1468 dst[i] = rgba[i][BCOMP];
1469 break;
1470 case GL_ALPHA:
1471 for (i=0;i<n;i++)
1472 dst[i] = rgba[i][ACOMP];
1473 break;
1474 case GL_LUMINANCE:
1475 for (i=0;i<n;i++)
1476 dst[i] = luminance[i];
1477 break;
1478 case GL_LUMINANCE_ALPHA:
1479 for (i=0;i<n;i++) {
1480 dst[i*2+0] = luminance[i];
1481 dst[i*2+1] = rgba[i][ACOMP];
1482 }
1483 break;
1484 case GL_RG:
1485 for (i=0;i<n;i++) {
1486 dst[i*2+0] = rgba[i][RCOMP];
1487 dst[i*2+1] = rgba[i][GCOMP];
1488 }
1489 break;
1490 case GL_RGB:
1491 for (i=0;i<n;i++) {
1492 dst[i*3+0] = rgba[i][RCOMP];
1493 dst[i*3+1] = rgba[i][GCOMP];
1494 dst[i*3+2] = rgba[i][BCOMP];
1495 }
1496 break;
1497 case GL_RGBA:
1498 for (i=0;i<n;i++) {
1499 dst[i*4+0] = rgba[i][RCOMP];
1500 dst[i*4+1] = rgba[i][GCOMP];
1501 dst[i*4+2] = rgba[i][BCOMP];
1502 dst[i*4+3] = rgba[i][ACOMP];
1503 }
1504 break;
1505 case GL_BGR:
1506 for (i=0;i<n;i++) {
1507 dst[i*3+0] = rgba[i][BCOMP];
1508 dst[i*3+1] = rgba[i][GCOMP];
1509 dst[i*3+2] = rgba[i][RCOMP];
1510 }
1511 break;
1512 case GL_BGRA:
1513 for (i=0;i<n;i++) {
1514 dst[i*4+0] = rgba[i][BCOMP];
1515 dst[i*4+1] = rgba[i][GCOMP];
1516 dst[i*4+2] = rgba[i][RCOMP];
1517 dst[i*4+3] = rgba[i][ACOMP];
1518 }
1519 break;
1520 case GL_ABGR_EXT:
1521 for (i=0;i<n;i++) {
1522 dst[i*4+0] = rgba[i][ACOMP];
1523 dst[i*4+1] = rgba[i][BCOMP];
1524 dst[i*4+2] = rgba[i][GCOMP];
1525 dst[i*4+3] = rgba[i][RCOMP];
1526 }
1527 break;
1528 case GL_DUDV_ATI:
1529 case GL_DU8DV8_ATI:
1530 for (i=0;i<n;i++) {
1531 dst[i*2+0] = rgba[i][RCOMP];
1532 dst[i*2+1] = rgba[i][GCOMP];
1533 }
1534 break;
1535 default:
1536 _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
1537 }
1538 }
1539 break;
1540 case GL_HALF_FLOAT_ARB:
1541 {
1542 GLhalfARB *dst = (GLhalfARB *) dstAddr;
1543 switch (dstFormat) {
1544 case GL_RED:
1545 for (i=0;i<n;i++)
1546 dst[i] = _mesa_float_to_half(rgba[i][RCOMP]);
1547 break;
1548 case GL_GREEN:
1549 for (i=0;i<n;i++)
1550 dst[i] = _mesa_float_to_half(rgba[i][GCOMP]);
1551 break;
1552 case GL_BLUE:
1553 for (i=0;i<n;i++)
1554 dst[i] = _mesa_float_to_half(rgba[i][BCOMP]);
1555 break;
1556 case GL_ALPHA:
1557 for (i=0;i<n;i++)
1558 dst[i] = _mesa_float_to_half(rgba[i][ACOMP]);
1559 break;
1560 case GL_LUMINANCE:
1561 for (i=0;i<n;i++)
1562 dst[i] = _mesa_float_to_half(luminance[i]);
1563 break;
1564 case GL_LUMINANCE_ALPHA:
1565 for (i=0;i<n;i++) {
1566 dst[i*2+0] = _mesa_float_to_half(luminance[i]);
1567 dst[i*2+1] = _mesa_float_to_half(rgba[i][ACOMP]);
1568 }
1569 break;
1570 case GL_RG:
1571 for (i=0;i<n;i++) {
1572 dst[i*2+0] = _mesa_float_to_half(rgba[i][RCOMP]);
1573 dst[i*2+1] = _mesa_float_to_half(rgba[i][GCOMP]);
1574 }
1575 break;
1576 case GL_RGB:
1577 for (i=0;i<n;i++) {
1578 dst[i*3+0] = _mesa_float_to_half(rgba[i][RCOMP]);
1579 dst[i*3+1] = _mesa_float_to_half(rgba[i][GCOMP]);
1580 dst[i*3+2] = _mesa_float_to_half(rgba[i][BCOMP]);
1581 }
1582 break;
1583 case GL_RGBA:
1584 for (i=0;i<n;i++) {
1585 dst[i*4+0] = _mesa_float_to_half(rgba[i][RCOMP]);
1586 dst[i*4+1] = _mesa_float_to_half(rgba[i][GCOMP]);
1587 dst[i*4+2] = _mesa_float_to_half(rgba[i][BCOMP]);
1588 dst[i*4+3] = _mesa_float_to_half(rgba[i][ACOMP]);
1589 }
1590 break;
1591 case GL_BGR:
1592 for (i=0;i<n;i++) {
1593 dst[i*3+0] = _mesa_float_to_half(rgba[i][BCOMP]);
1594 dst[i*3+1] = _mesa_float_to_half(rgba[i][GCOMP]);
1595 dst[i*3+2] = _mesa_float_to_half(rgba[i][RCOMP]);
1596 }
1597 break;
1598 case GL_BGRA:
1599 for (i=0;i<n;i++) {
1600 dst[i*4+0] = _mesa_float_to_half(rgba[i][BCOMP]);
1601 dst[i*4+1] = _mesa_float_to_half(rgba[i][GCOMP]);
1602 dst[i*4+2] = _mesa_float_to_half(rgba[i][RCOMP]);
1603 dst[i*4+3] = _mesa_float_to_half(rgba[i][ACOMP]);
1604 }
1605 break;
1606 case GL_ABGR_EXT:
1607 for (i=0;i<n;i++) {
1608 dst[i*4+0] = _mesa_float_to_half(rgba[i][ACOMP]);
1609 dst[i*4+1] = _mesa_float_to_half(rgba[i][BCOMP]);
1610 dst[i*4+2] = _mesa_float_to_half(rgba[i][GCOMP]);
1611 dst[i*4+3] = _mesa_float_to_half(rgba[i][RCOMP]);
1612 }
1613 break;
1614 case GL_DUDV_ATI:
1615 case GL_DU8DV8_ATI:
1616 for (i=0;i<n;i++) {
1617 dst[i*2+0] = _mesa_float_to_half(rgba[i][RCOMP]);
1618 dst[i*2+1] = _mesa_float_to_half(rgba[i][GCOMP]);
1619 }
1620 break;
1621 default:
1622 _mesa_problem(ctx, "bad format in _mesa_pack_rgba_span\n");
1623 }
1624 }
1625 break;
1626 case GL_UNSIGNED_BYTE_3_3_2:
1627 if (dstFormat == GL_RGB) {
1628 GLubyte *dst = (GLubyte *) dstAddr;
1629 for (i=0;i<n;i++) {
1630 dst[i] = (IROUND(rgba[i][RCOMP] * 7.0F) << 5)
1631 | (IROUND(rgba[i][GCOMP] * 7.0F) << 2)
1632 | (IROUND(rgba[i][BCOMP] * 3.0F) );
1633 }
1634 }
1635 break;
1636 case GL_UNSIGNED_BYTE_2_3_3_REV:
1637 if (dstFormat == GL_RGB) {
1638 GLubyte *dst = (GLubyte *) dstAddr;
1639 for (i=0;i<n;i++) {
1640 dst[i] = (IROUND(rgba[i][RCOMP] * 7.0F) )
1641 | (IROUND(rgba[i][GCOMP] * 7.0F) << 3)
1642 | (IROUND(rgba[i][BCOMP] * 3.0F) << 6);
1643 }
1644 }
1645 break;
1646 case GL_UNSIGNED_SHORT_5_6_5:
1647 if (dstFormat == GL_RGB) {
1648 GLushort *dst = (GLushort *) dstAddr;
1649 for (i=0;i<n;i++) {
1650 dst[i] = (IROUND(rgba[i][RCOMP] * 31.0F) << 11)
1651 | (IROUND(rgba[i][GCOMP] * 63.0F) << 5)
1652 | (IROUND(rgba[i][BCOMP] * 31.0F) );
1653 }
1654 }
1655 break;
1656 case GL_UNSIGNED_SHORT_5_6_5_REV:
1657 if (dstFormat == GL_RGB) {
1658 GLushort *dst = (GLushort *) dstAddr;
1659 for (i=0;i<n;i++) {
1660 dst[i] = (IROUND(rgba[i][RCOMP] * 31.0F) )
1661 | (IROUND(rgba[i][GCOMP] * 63.0F) << 5)
1662 | (IROUND(rgba[i][BCOMP] * 31.0F) << 11);
1663 }
1664 }
1665 break;
1666 case GL_UNSIGNED_SHORT_4_4_4_4:
1667 if (dstFormat == GL_RGBA) {
1668 GLushort *dst = (GLushort *) dstAddr;
1669 for (i=0;i<n;i++) {
1670 dst[i] = (IROUND(rgba[i][RCOMP] * 15.0F) << 12)
1671 | (IROUND(rgba[i][GCOMP] * 15.0F) << 8)
1672 | (IROUND(rgba[i][BCOMP] * 15.0F) << 4)
1673 | (IROUND(rgba[i][ACOMP] * 15.0F) );
1674 }
1675 }
1676 else if (dstFormat == GL_BGRA) {
1677 GLushort *dst = (GLushort *) dstAddr;
1678 for (i=0;i<n;i++) {
1679 dst[i] = (IROUND(rgba[i][BCOMP] * 15.0F) << 12)
1680 | (IROUND(rgba[i][GCOMP] * 15.0F) << 8)
1681 | (IROUND(rgba[i][RCOMP] * 15.0F) << 4)
1682 | (IROUND(rgba[i][ACOMP] * 15.0F) );
1683 }
1684 }
1685 else if (dstFormat == GL_ABGR_EXT) {
1686 GLushort *dst = (GLushort *) dstAddr;
1687 for (i=0;i<n;i++) {
1688 dst[i] = (IROUND(rgba[i][ACOMP] * 15.0F) << 12)
1689 | (IROUND(rgba[i][BCOMP] * 15.0F) << 8)
1690 | (IROUND(rgba[i][GCOMP] * 15.0F) << 4)
1691 | (IROUND(rgba[i][RCOMP] * 15.0F) );
1692 }
1693 }
1694 break;
1695 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
1696 if (dstFormat == GL_RGBA) {
1697 GLushort *dst = (GLushort *) dstAddr;
1698 for (i=0;i<n;i++) {
1699 dst[i] = (IROUND(rgba[i][RCOMP] * 15.0F) )
1700 | (IROUND(rgba[i][GCOMP] * 15.0F) << 4)
1701 | (IROUND(rgba[i][BCOMP] * 15.0F) << 8)
1702 | (IROUND(rgba[i][ACOMP] * 15.0F) << 12);
1703 }
1704 }
1705 else if (dstFormat == GL_BGRA) {
1706 GLushort *dst = (GLushort *) dstAddr;
1707 for (i=0;i<n;i++) {
1708 dst[i] = (IROUND(rgba[i][BCOMP] * 15.0F) )
1709 | (IROUND(rgba[i][GCOMP] * 15.0F) << 4)
1710 | (IROUND(rgba[i][RCOMP] * 15.0F) << 8)
1711 | (IROUND(rgba[i][ACOMP] * 15.0F) << 12);
1712 }
1713 }
1714 else if (dstFormat == GL_ABGR_EXT) {
1715 GLushort *dst = (GLushort *) dstAddr;
1716 for (i=0;i<n;i++) {
1717 dst[i] = (IROUND(rgba[i][ACOMP] * 15.0F) )
1718 | (IROUND(rgba[i][BCOMP] * 15.0F) << 4)
1719 | (IROUND(rgba[i][GCOMP] * 15.0F) << 8)
1720 | (IROUND(rgba[i][RCOMP] * 15.0F) << 12);
1721 }
1722 }
1723 break;
1724 case GL_UNSIGNED_SHORT_5_5_5_1:
1725 if (dstFormat == GL_RGBA) {
1726 GLushort *dst = (GLushort *) dstAddr;
1727 for (i=0;i<n;i++) {
1728 dst[i] = (IROUND(rgba[i][RCOMP] * 31.0F) << 11)
1729 | (IROUND(rgba[i][GCOMP] * 31.0F) << 6)
1730 | (IROUND(rgba[i][BCOMP] * 31.0F) << 1)
1731 | (IROUND(rgba[i][ACOMP] * 1.0F) );
1732 }
1733 }
1734 else if (dstFormat == GL_BGRA) {
1735 GLushort *dst = (GLushort *) dstAddr;
1736 for (i=0;i<n;i++) {
1737 dst[i] = (IROUND(rgba[i][BCOMP] * 31.0F) << 11)
1738 | (IROUND(rgba[i][GCOMP] * 31.0F) << 6)
1739 | (IROUND(rgba[i][RCOMP] * 31.0F) << 1)
1740 | (IROUND(rgba[i][ACOMP] * 1.0F) );
1741 }
1742 }
1743 else if (dstFormat == GL_ABGR_EXT) {
1744 GLushort *dst = (GLushort *) dstAddr;
1745 for (i=0;i<n;i++) {
1746 dst[i] = (IROUND(rgba[i][ACOMP] * 31.0F) << 11)
1747 | (IROUND(rgba[i][BCOMP] * 31.0F) << 6)
1748 | (IROUND(rgba[i][GCOMP] * 31.0F) << 1)
1749 | (IROUND(rgba[i][RCOMP] * 1.0F) );
1750 }
1751 }
1752 break;
1753 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
1754 if (dstFormat == GL_RGBA) {
1755 GLushort *dst = (GLushort *) dstAddr;
1756 for (i=0;i<n;i++) {
1757 dst[i] = (IROUND(rgba[i][RCOMP] * 31.0F) )
1758 | (IROUND(rgba[i][GCOMP] * 31.0F) << 5)
1759 | (IROUND(rgba[i][BCOMP] * 31.0F) << 10)
1760 | (IROUND(rgba[i][ACOMP] * 1.0F) << 15);
1761 }
1762 }
1763 else if (dstFormat == GL_BGRA) {
1764 GLushort *dst = (GLushort *) dstAddr;
1765 for (i=0;i<n;i++) {
1766 dst[i] = (IROUND(rgba[i][BCOMP] * 31.0F) )
1767 | (IROUND(rgba[i][GCOMP] * 31.0F) << 5)
1768 | (IROUND(rgba[i][RCOMP] * 31.0F) << 10)
1769 | (IROUND(rgba[i][ACOMP] * 1.0F) << 15);
1770 }
1771 }
1772 else if (dstFormat == GL_ABGR_EXT) {
1773 GLushort *dst = (GLushort *) dstAddr;
1774 for (i=0;i<n;i++) {
1775 dst[i] = (IROUND(rgba[i][ACOMP] * 31.0F) )
1776 | (IROUND(rgba[i][BCOMP] * 31.0F) << 5)
1777 | (IROUND(rgba[i][GCOMP] * 31.0F) << 10)
1778 | (IROUND(rgba[i][RCOMP] * 1.0F) << 15);
1779 }
1780 }
1781 break;
1782 case GL_UNSIGNED_INT_8_8_8_8:
1783 if (dstFormat == GL_RGBA) {
1784 GLuint *dst = (GLuint *) dstAddr;
1785 for (i=0;i<n;i++) {
1786 dst[i] = (IROUND(rgba[i][RCOMP] * 255.F) << 24)
1787 | (IROUND(rgba[i][GCOMP] * 255.F) << 16)
1788 | (IROUND(rgba[i][BCOMP] * 255.F) << 8)
1789 | (IROUND(rgba[i][ACOMP] * 255.F) );
1790 }
1791 }
1792 else if (dstFormat == GL_BGRA) {
1793 GLuint *dst = (GLuint *) dstAddr;
1794 for (i=0;i<n;i++) {
1795 dst[i] = (IROUND(rgba[i][BCOMP] * 255.F) << 24)
1796 | (IROUND(rgba[i][GCOMP] * 255.F) << 16)
1797 | (IROUND(rgba[i][RCOMP] * 255.F) << 8)
1798 | (IROUND(rgba[i][ACOMP] * 255.F) );
1799 }
1800 }
1801 else if (dstFormat == GL_ABGR_EXT) {
1802 GLuint *dst = (GLuint *) dstAddr;
1803 for (i=0;i<n;i++) {
1804 dst[i] = (IROUND(rgba[i][ACOMP] * 255.F) << 24)
1805 | (IROUND(rgba[i][BCOMP] * 255.F) << 16)
1806 | (IROUND(rgba[i][GCOMP] * 255.F) << 8)
1807 | (IROUND(rgba[i][RCOMP] * 255.F) );
1808 }
1809 }
1810 break;
1811 case GL_UNSIGNED_INT_8_8_8_8_REV:
1812 if (dstFormat == GL_RGBA) {
1813 GLuint *dst = (GLuint *) dstAddr;
1814 for (i=0;i<n;i++) {
1815 dst[i] = (IROUND(rgba[i][RCOMP] * 255.0F) )
1816 | (IROUND(rgba[i][GCOMP] * 255.0F) << 8)
1817 | (IROUND(rgba[i][BCOMP] * 255.0F) << 16)
1818 | (IROUND(rgba[i][ACOMP] * 255.0F) << 24);
1819 }
1820 }
1821 else if (dstFormat == GL_BGRA) {
1822 GLuint *dst = (GLuint *) dstAddr;
1823 for (i=0;i<n;i++) {
1824 dst[i] = (IROUND(rgba[i][BCOMP] * 255.0F) )
1825 | (IROUND(rgba[i][GCOMP] * 255.0F) << 8)
1826 | (IROUND(rgba[i][RCOMP] * 255.0F) << 16)
1827 | (IROUND(rgba[i][ACOMP] * 255.0F) << 24);
1828 }
1829 }
1830 else if (dstFormat == GL_ABGR_EXT) {
1831 GLuint *dst = (GLuint *) dstAddr;
1832 for (i=0;i<n;i++) {
1833 dst[i] = (IROUND(rgba[i][ACOMP] * 255.0F) )
1834 | (IROUND(rgba[i][BCOMP] * 255.0F) << 8)
1835 | (IROUND(rgba[i][GCOMP] * 255.0F) << 16)
1836 | (IROUND(rgba[i][RCOMP] * 255.0F) << 24);
1837 }
1838 }
1839 break;
1840 case GL_UNSIGNED_INT_10_10_10_2:
1841 if (dstFormat == GL_RGBA) {
1842 GLuint *dst = (GLuint *) dstAddr;
1843 for (i=0;i<n;i++) {
1844 dst[i] = (IROUND(rgba[i][RCOMP] * 1023.0F) << 22)
1845 | (IROUND(rgba[i][GCOMP] * 1023.0F) << 12)
1846 | (IROUND(rgba[i][BCOMP] * 1023.0F) << 2)
1847 | (IROUND(rgba[i][ACOMP] * 3.0F) );
1848 }
1849 }
1850 else if (dstFormat == GL_BGRA) {
1851 GLuint *dst = (GLuint *) dstAddr;
1852 for (i=0;i<n;i++) {
1853 dst[i] = (IROUND(rgba[i][BCOMP] * 1023.0F) << 22)
1854 | (IROUND(rgba[i][GCOMP] * 1023.0F) << 12)
1855 | (IROUND(rgba[i][RCOMP] * 1023.0F) << 2)
1856 | (IROUND(rgba[i][ACOMP] * 3.0F) );
1857 }
1858 }
1859 else if (dstFormat == GL_ABGR_EXT) {
1860 GLuint *dst = (GLuint *) dstAddr;
1861 for (i=0;i<n;i++) {
1862 dst[i] = (IROUND(rgba[i][ACOMP] * 1023.0F) << 22)
1863 | (IROUND(rgba[i][BCOMP] * 1023.0F) << 12)
1864 | (IROUND(rgba[i][GCOMP] * 1023.0F) << 2)
1865 | (IROUND(rgba[i][RCOMP] * 3.0F) );
1866 }
1867 }
1868 break;
1869 case GL_UNSIGNED_INT_2_10_10_10_REV:
1870 if (dstFormat == GL_RGBA) {
1871 GLuint *dst = (GLuint *) dstAddr;
1872 for (i=0;i<n;i++) {
1873 dst[i] = (IROUND(rgba[i][RCOMP] * 1023.0F) )
1874 | (IROUND(rgba[i][GCOMP] * 1023.0F) << 10)
1875 | (IROUND(rgba[i][BCOMP] * 1023.0F) << 20)
1876 | (IROUND(rgba[i][ACOMP] * 3.0F) << 30);
1877 }
1878 }
1879 else if (dstFormat == GL_BGRA) {
1880 GLuint *dst = (GLuint *) dstAddr;
1881 for (i=0;i<n;i++) {
1882 dst[i] = (IROUND(rgba[i][BCOMP] * 1023.0F) )
1883 | (IROUND(rgba[i][GCOMP] * 1023.0F) << 10)
1884 | (IROUND(rgba[i][RCOMP] * 1023.0F) << 20)
1885 | (IROUND(rgba[i][ACOMP] * 3.0F) << 30);
1886 }
1887 }
1888 else if (dstFormat == GL_ABGR_EXT) {
1889 GLuint *dst = (GLuint *) dstAddr;
1890 for (i=0;i<n;i++) {
1891 dst[i] = (IROUND(rgba[i][ACOMP] * 1023.0F) )
1892 | (IROUND(rgba[i][BCOMP] * 1023.0F) << 10)
1893 | (IROUND(rgba[i][GCOMP] * 1023.0F) << 20)
1894 | (IROUND(rgba[i][RCOMP] * 3.0F) << 30);
1895 }
1896 }
1897 break;
1898 case GL_UNSIGNED_INT_5_9_9_9_REV:
1899 {
1900 GLuint *dst = (GLuint *) dstAddr;
1901 for (i = 0; i < n; i++) {
1902 dst[i] = float3_to_rgb9e5(rgba[i]);
1903 }
1904 }
1905 break;
1906 case GL_UNSIGNED_INT_10F_11F_11F_REV:
1907 {
1908 GLuint *dst = (GLuint *) dstAddr;
1909 for (i = 0; i < n; i++) {
1910 dst[i] = float3_to_r11g11b10f(rgba[i]);
1911 }
1912 }
1913 break;
1914 default:
1915 _mesa_problem(ctx, "bad type in _mesa_pack_rgba_span_float");
1916 return;
1917 }
1918
1919 if (dstPacking->SwapBytes) {
1920 GLint swapSize = _mesa_sizeof_packed_type(dstType);
1921 if (swapSize == 2) {
1922 if (dstPacking->SwapBytes) {
1923 _mesa_swap2((GLushort *) dstAddr, n * comps);
1924 }
1925 }
1926 else if (swapSize == 4) {
1927 if (dstPacking->SwapBytes) {
1928 _mesa_swap4((GLuint *) dstAddr, n * comps);
1929 }
1930 }
1931 }
1932
1933 free(luminance);
1934 }
1935
1936
1937
1938 #define SWAP2BYTE(VALUE) \
1939 { \
1940 GLubyte *bytes = (GLubyte *) &(VALUE); \
1941 GLubyte tmp = bytes[0]; \
1942 bytes[0] = bytes[1]; \
1943 bytes[1] = tmp; \
1944 }
1945
1946 #define SWAP4BYTE(VALUE) \
1947 { \
1948 GLubyte *bytes = (GLubyte *) &(VALUE); \
1949 GLubyte tmp = bytes[0]; \
1950 bytes[0] = bytes[3]; \
1951 bytes[3] = tmp; \
1952 tmp = bytes[1]; \
1953 bytes[1] = bytes[2]; \
1954 bytes[2] = tmp; \
1955 }
1956
1957
1958 static void
1959 extract_uint_indexes(GLuint n, GLuint indexes[],
1960 GLenum srcFormat, GLenum srcType, const GLvoid *src,
1961 const struct gl_pixelstore_attrib *unpack )
1962 {
1963 ASSERT(srcFormat == GL_COLOR_INDEX || srcFormat == GL_STENCIL_INDEX);
1964
1965 ASSERT(srcType == GL_BITMAP ||
1966 srcType == GL_UNSIGNED_BYTE ||
1967 srcType == GL_BYTE ||
1968 srcType == GL_UNSIGNED_SHORT ||
1969 srcType == GL_SHORT ||
1970 srcType == GL_UNSIGNED_INT ||
1971 srcType == GL_INT ||
1972 srcType == GL_UNSIGNED_INT_24_8_EXT ||
1973 srcType == GL_HALF_FLOAT_ARB ||
1974 srcType == GL_FLOAT ||
1975 srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
1976
1977 switch (srcType) {
1978 case GL_BITMAP:
1979 {
1980 GLubyte *ubsrc = (GLubyte *) src;
1981 if (unpack->LsbFirst) {
1982 GLubyte mask = 1 << (unpack->SkipPixels & 0x7);
1983 GLuint i;
1984 for (i = 0; i < n; i++) {
1985 indexes[i] = (*ubsrc & mask) ? 1 : 0;
1986 if (mask == 128) {
1987 mask = 1;
1988 ubsrc++;
1989 }
1990 else {
1991 mask = mask << 1;
1992 }
1993 }
1994 }
1995 else {
1996 GLubyte mask = 128 >> (unpack->SkipPixels & 0x7);
1997 GLuint i;
1998 for (i = 0; i < n; i++) {
1999 indexes[i] = (*ubsrc & mask) ? 1 : 0;
2000 if (mask == 1) {
2001 mask = 128;
2002 ubsrc++;
2003 }
2004 else {
2005 mask = mask >> 1;
2006 }
2007 }
2008 }
2009 }
2010 break;
2011 case GL_UNSIGNED_BYTE:
2012 {
2013 GLuint i;
2014 const GLubyte *s = (const GLubyte *) src;
2015 for (i = 0; i < n; i++)
2016 indexes[i] = s[i];
2017 }
2018 break;
2019 case GL_BYTE:
2020 {
2021 GLuint i;
2022 const GLbyte *s = (const GLbyte *) src;
2023 for (i = 0; i < n; i++)
2024 indexes[i] = s[i];
2025 }
2026 break;
2027 case GL_UNSIGNED_SHORT:
2028 {
2029 GLuint i;
2030 const GLushort *s = (const GLushort *) src;
2031 if (unpack->SwapBytes) {
2032 for (i = 0; i < n; i++) {
2033 GLushort value = s[i];
2034 SWAP2BYTE(value);
2035 indexes[i] = value;
2036 }
2037 }
2038 else {
2039 for (i = 0; i < n; i++)
2040 indexes[i] = s[i];
2041 }
2042 }
2043 break;
2044 case GL_SHORT:
2045 {
2046 GLuint i;
2047 const GLshort *s = (const GLshort *) src;
2048 if (unpack->SwapBytes) {
2049 for (i = 0; i < n; i++) {
2050 GLshort value = s[i];
2051 SWAP2BYTE(value);
2052 indexes[i] = value;
2053 }
2054 }
2055 else {
2056 for (i = 0; i < n; i++)
2057 indexes[i] = s[i];
2058 }
2059 }
2060 break;
2061 case GL_UNSIGNED_INT:
2062 {
2063 GLuint i;
2064 const GLuint *s = (const GLuint *) src;
2065 if (unpack->SwapBytes) {
2066 for (i = 0; i < n; i++) {
2067 GLuint value = s[i];
2068 SWAP4BYTE(value);
2069 indexes[i] = value;
2070 }
2071 }
2072 else {
2073 for (i = 0; i < n; i++)
2074 indexes[i] = s[i];
2075 }
2076 }
2077 break;
2078 case GL_INT:
2079 {
2080 GLuint i;
2081 const GLint *s = (const GLint *) src;
2082 if (unpack->SwapBytes) {
2083 for (i = 0; i < n; i++) {
2084 GLint value = s[i];
2085 SWAP4BYTE(value);
2086 indexes[i] = value;
2087 }
2088 }
2089 else {
2090 for (i = 0; i < n; i++)
2091 indexes[i] = s[i];
2092 }
2093 }
2094 break;
2095 case GL_FLOAT:
2096 {
2097 GLuint i;
2098 const GLfloat *s = (const GLfloat *) src;
2099 if (unpack->SwapBytes) {
2100 for (i = 0; i < n; i++) {
2101 GLfloat value = s[i];
2102 SWAP4BYTE(value);
2103 indexes[i] = (GLuint) value;
2104 }
2105 }
2106 else {
2107 for (i = 0; i < n; i++)
2108 indexes[i] = (GLuint) s[i];
2109 }
2110 }
2111 break;
2112 case GL_HALF_FLOAT_ARB:
2113 {
2114 GLuint i;
2115 const GLhalfARB *s = (const GLhalfARB *) src;
2116 if (unpack->SwapBytes) {
2117 for (i = 0; i < n; i++) {
2118 GLhalfARB value = s[i];
2119 SWAP2BYTE(value);
2120 indexes[i] = (GLuint) _mesa_half_to_float(value);
2121 }
2122 }
2123 else {
2124 for (i = 0; i < n; i++)
2125 indexes[i] = (GLuint) _mesa_half_to_float(s[i]);
2126 }
2127 }
2128 break;
2129 case GL_UNSIGNED_INT_24_8_EXT:
2130 {
2131 GLuint i;
2132 const GLuint *s = (const GLuint *) src;
2133 if (unpack->SwapBytes) {
2134 for (i = 0; i < n; i++) {
2135 GLuint value = s[i];
2136 SWAP4BYTE(value);
2137 indexes[i] = value & 0xff; /* lower 8 bits */
2138 }
2139 }
2140 else {
2141 for (i = 0; i < n; i++)
2142 indexes[i] = s[i] & 0xff; /* lower 8 bits */
2143 }
2144 }
2145 break;
2146 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
2147 {
2148 GLuint i;
2149 const GLuint *s = (const GLuint *) src;
2150 if (unpack->SwapBytes) {
2151 for (i = 0; i < n; i++) {
2152 GLuint value = s[i*2+1];
2153 SWAP4BYTE(value);
2154 indexes[i] = value & 0xff; /* lower 8 bits */
2155 }
2156 }
2157 else {
2158 for (i = 0; i < n; i++)
2159 indexes[i] = s[i*2+1] & 0xff; /* lower 8 bits */
2160 }
2161 }
2162 break;
2163
2164 default:
2165 _mesa_problem(NULL, "bad srcType in extract_uint_indexes");
2166 return;
2167 }
2168 }
2169
2170
2171 /**
2172 * Return source/dest RGBA indexes for unpacking pixels.
2173 */
2174 static void
2175 get_component_mapping(GLenum format,
2176 GLint *rSrc,
2177 GLint *gSrc,
2178 GLint *bSrc,
2179 GLint *aSrc,
2180 GLint *rDst,
2181 GLint *gDst,
2182 GLint *bDst,
2183 GLint *aDst)
2184 {
2185 switch (format) {
2186 case GL_RED:
2187 case GL_RED_INTEGER_EXT:
2188 *rSrc = 0;
2189 *gSrc = *bSrc = *aSrc = -1;
2190 break;
2191 case GL_GREEN:
2192 case GL_GREEN_INTEGER_EXT:
2193 *gSrc = 0;
2194 *rSrc = *bSrc = *aSrc = -1;
2195 break;
2196 case GL_BLUE:
2197 case GL_BLUE_INTEGER_EXT:
2198 *bSrc = 0;
2199 *rSrc = *gSrc = *aSrc = -1;
2200 break;
2201 case GL_ALPHA:
2202 case GL_ALPHA_INTEGER_EXT:
2203 *rSrc = *gSrc = *bSrc = -1;
2204 *aSrc = 0;
2205 break;
2206 case GL_LUMINANCE:
2207 case GL_LUMINANCE_INTEGER_EXT:
2208 *rSrc = *gSrc = *bSrc = 0;
2209 *aSrc = -1;
2210 break;
2211 case GL_LUMINANCE_ALPHA:
2212 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
2213 *rSrc = *gSrc = *bSrc = 0;
2214 *aSrc = 1;
2215 break;
2216 case GL_INTENSITY:
2217 *rSrc = *gSrc = *bSrc = *aSrc = 0;
2218 break;
2219 case GL_RG:
2220 case GL_RG_INTEGER:
2221 *rSrc = 0;
2222 *gSrc = 1;
2223 *bSrc = -1;
2224 *aSrc = -1;
2225 *rDst = 0;
2226 *gDst = 1;
2227 *bDst = 2;
2228 *aDst = 3;
2229 break;
2230 case GL_RGB:
2231 case GL_RGB_INTEGER:
2232 *rSrc = 0;
2233 *gSrc = 1;
2234 *bSrc = 2;
2235 *aSrc = -1;
2236 *rDst = 0;
2237 *gDst = 1;
2238 *bDst = 2;
2239 *aDst = 3;
2240 break;
2241 case GL_BGR:
2242 *rSrc = 2;
2243 *gSrc = 1;
2244 *bSrc = 0;
2245 *aSrc = -1;
2246 *rDst = 2;
2247 *gDst = 1;
2248 *bDst = 0;
2249 *aDst = 3;
2250 break;
2251 case GL_RGBA:
2252 case GL_RGBA_INTEGER:
2253 *rSrc = 0;
2254 *gSrc = 1;
2255 *bSrc = 2;
2256 *aSrc = 3;
2257 *rDst = 0;
2258 *gDst = 1;
2259 *bDst = 2;
2260 *aDst = 3;
2261 break;
2262 case GL_BGRA:
2263 *rSrc = 2;
2264 *gSrc = 1;
2265 *bSrc = 0;
2266 *aSrc = 3;
2267 *rDst = 2;
2268 *gDst = 1;
2269 *bDst = 0;
2270 *aDst = 3;
2271 break;
2272 case GL_ABGR_EXT:
2273 *rSrc = 3;
2274 *gSrc = 2;
2275 *bSrc = 1;
2276 *aSrc = 0;
2277 *rDst = 3;
2278 *gDst = 2;
2279 *bDst = 1;
2280 *aDst = 0;
2281 break;
2282 case GL_DU8DV8_ATI:
2283 case GL_DUDV_ATI:
2284 *rSrc = 0;
2285 *gSrc = 1;
2286 *bSrc = -1;
2287 *aSrc = -1;
2288 break;
2289 default:
2290 _mesa_problem(NULL, "bad srcFormat %s in get_component_mapping",
2291 _mesa_lookup_enum_by_nr(format));
2292 return;
2293 }
2294 }
2295
2296
2297
2298 /*
2299 * This function extracts floating point RGBA values from arbitrary
2300 * image data. srcFormat and srcType are the format and type parameters
2301 * passed to glDrawPixels, glTexImage[123]D, glTexSubImage[123]D, etc.
2302 *
2303 * Refering to section 3.6.4 of the OpenGL 1.2 spec, this function
2304 * implements the "Conversion to floating point", "Conversion to RGB",
2305 * and "Final Expansion to RGBA" operations.
2306 *
2307 * Args: n - number of pixels
2308 * rgba - output colors
2309 * srcFormat - format of incoming data
2310 * srcType - data type of incoming data
2311 * src - source data pointer
2312 * swapBytes - perform byteswapping of incoming data?
2313 */
2314 static void
2315 extract_float_rgba(GLuint n, GLfloat rgba[][4],
2316 GLenum srcFormat, GLenum srcType, const GLvoid *src,
2317 GLboolean swapBytes)
2318 {
2319 GLint rSrc, gSrc, bSrc, aSrc;
2320 GLint stride;
2321 GLint rDst, bDst, gDst, aDst;
2322 GLboolean intFormat;
2323 GLfloat rs = 1.0f, gs = 1.0f, bs = 1.0f, as = 1.0f; /* scale factors */
2324
2325 ASSERT(srcFormat == GL_RED ||
2326 srcFormat == GL_GREEN ||
2327 srcFormat == GL_BLUE ||
2328 srcFormat == GL_ALPHA ||
2329 srcFormat == GL_LUMINANCE ||
2330 srcFormat == GL_LUMINANCE_ALPHA ||
2331 srcFormat == GL_INTENSITY ||
2332 srcFormat == GL_RG ||
2333 srcFormat == GL_RGB ||
2334 srcFormat == GL_BGR ||
2335 srcFormat == GL_RGBA ||
2336 srcFormat == GL_BGRA ||
2337 srcFormat == GL_ABGR_EXT ||
2338 srcFormat == GL_DU8DV8_ATI ||
2339 srcFormat == GL_DUDV_ATI ||
2340 srcFormat == GL_RED_INTEGER_EXT ||
2341 srcFormat == GL_GREEN_INTEGER_EXT ||
2342 srcFormat == GL_BLUE_INTEGER_EXT ||
2343 srcFormat == GL_ALPHA_INTEGER_EXT ||
2344 srcFormat == GL_RGB_INTEGER_EXT ||
2345 srcFormat == GL_RGBA_INTEGER_EXT ||
2346 srcFormat == GL_BGR_INTEGER_EXT ||
2347 srcFormat == GL_BGRA_INTEGER_EXT ||
2348 srcFormat == GL_LUMINANCE_INTEGER_EXT ||
2349 srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT);
2350
2351 ASSERT(srcType == GL_UNSIGNED_BYTE ||
2352 srcType == GL_BYTE ||
2353 srcType == GL_UNSIGNED_SHORT ||
2354 srcType == GL_SHORT ||
2355 srcType == GL_UNSIGNED_INT ||
2356 srcType == GL_INT ||
2357 srcType == GL_HALF_FLOAT_ARB ||
2358 srcType == GL_FLOAT ||
2359 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
2360 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
2361 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
2362 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
2363 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
2364 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
2365 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
2366 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
2367 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
2368 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
2369 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
2370 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
2371 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
2372 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
2373
2374 get_component_mapping(srcFormat,
2375 &rSrc, &gSrc, &bSrc, &aSrc,
2376 &rDst, &gDst, &bDst, &aDst);
2377
2378 stride = _mesa_components_in_format(srcFormat);
2379
2380 intFormat = _mesa_is_integer_format(srcFormat);
2381
2382 #define PROCESS(SRC_INDEX, DST_INDEX, DEFAULT_FLT, DEFAULT_INT, TYPE, CONVERSION) \
2383 if ((SRC_INDEX) < 0) { \
2384 GLuint i; \
2385 if (intFormat) { \
2386 for (i = 0; i < n; i++) { \
2387 rgba[i][DST_INDEX] = DEFAULT_INT; \
2388 } \
2389 } \
2390 else { \
2391 for (i = 0; i < n; i++) { \
2392 rgba[i][DST_INDEX] = DEFAULT_FLT; \
2393 } \
2394 } \
2395 } \
2396 else if (swapBytes) { \
2397 const TYPE *s = (const TYPE *) src; \
2398 GLuint i; \
2399 for (i = 0; i < n; i++) { \
2400 TYPE value = s[SRC_INDEX]; \
2401 if (sizeof(TYPE) == 2) { \
2402 SWAP2BYTE(value); \
2403 } \
2404 else if (sizeof(TYPE) == 4) { \
2405 SWAP4BYTE(value); \
2406 } \
2407 if (intFormat) \
2408 rgba[i][DST_INDEX] = (GLfloat) value; \
2409 else \
2410 rgba[i][DST_INDEX] = (GLfloat) CONVERSION(value); \
2411 s += stride; \
2412 } \
2413 } \
2414 else { \
2415 const TYPE *s = (const TYPE *) src; \
2416 GLuint i; \
2417 if (intFormat) { \
2418 for (i = 0; i < n; i++) { \
2419 rgba[i][DST_INDEX] = (GLfloat) s[SRC_INDEX]; \
2420 s += stride; \
2421 } \
2422 } \
2423 else { \
2424 for (i = 0; i < n; i++) { \
2425 rgba[i][DST_INDEX] = (GLfloat) CONVERSION(s[SRC_INDEX]); \
2426 s += stride; \
2427 } \
2428 } \
2429 }
2430
2431 switch (srcType) {
2432 case GL_UNSIGNED_BYTE:
2433 PROCESS(rSrc, RCOMP, 0.0F, 0, GLubyte, UBYTE_TO_FLOAT);
2434 PROCESS(gSrc, GCOMP, 0.0F, 0, GLubyte, UBYTE_TO_FLOAT);
2435 PROCESS(bSrc, BCOMP, 0.0F, 0, GLubyte, UBYTE_TO_FLOAT);
2436 PROCESS(aSrc, ACOMP, 1.0F, 255, GLubyte, UBYTE_TO_FLOAT);
2437 break;
2438 case GL_BYTE:
2439 PROCESS(rSrc, RCOMP, 0.0F, 0, GLbyte, BYTE_TO_FLOAT);
2440 PROCESS(gSrc, GCOMP, 0.0F, 0, GLbyte, BYTE_TO_FLOAT);
2441 PROCESS(bSrc, BCOMP, 0.0F, 0, GLbyte, BYTE_TO_FLOAT);
2442 PROCESS(aSrc, ACOMP, 1.0F, 127, GLbyte, BYTE_TO_FLOAT);
2443 break;
2444 case GL_UNSIGNED_SHORT:
2445 PROCESS(rSrc, RCOMP, 0.0F, 0, GLushort, USHORT_TO_FLOAT);
2446 PROCESS(gSrc, GCOMP, 0.0F, 0, GLushort, USHORT_TO_FLOAT);
2447 PROCESS(bSrc, BCOMP, 0.0F, 0, GLushort, USHORT_TO_FLOAT);
2448 PROCESS(aSrc, ACOMP, 1.0F, 0xffff, GLushort, USHORT_TO_FLOAT);
2449 break;
2450 case GL_SHORT:
2451 PROCESS(rSrc, RCOMP, 0.0F, 0, GLshort, SHORT_TO_FLOAT);
2452 PROCESS(gSrc, GCOMP, 0.0F, 0, GLshort, SHORT_TO_FLOAT);
2453 PROCESS(bSrc, BCOMP, 0.0F, 0, GLshort, SHORT_TO_FLOAT);
2454 PROCESS(aSrc, ACOMP, 1.0F, 32767, GLshort, SHORT_TO_FLOAT);
2455 break;
2456 case GL_UNSIGNED_INT:
2457 PROCESS(rSrc, RCOMP, 0.0F, 0, GLuint, UINT_TO_FLOAT);
2458 PROCESS(gSrc, GCOMP, 0.0F, 0, GLuint, UINT_TO_FLOAT);
2459 PROCESS(bSrc, BCOMP, 0.0F, 0, GLuint, UINT_TO_FLOAT);
2460 PROCESS(aSrc, ACOMP, 1.0F, 0xffffffff, GLuint, UINT_TO_FLOAT);
2461 break;
2462 case GL_INT:
2463 PROCESS(rSrc, RCOMP, 0.0F, 0, GLint, INT_TO_FLOAT);
2464 PROCESS(gSrc, GCOMP, 0.0F, 0, GLint, INT_TO_FLOAT);
2465 PROCESS(bSrc, BCOMP, 0.0F, 0, GLint, INT_TO_FLOAT);
2466 PROCESS(aSrc, ACOMP, 1.0F, 2147483647, GLint, INT_TO_FLOAT);
2467 break;
2468 case GL_FLOAT:
2469 PROCESS(rSrc, RCOMP, 0.0F, 0.0F, GLfloat, (GLfloat));
2470 PROCESS(gSrc, GCOMP, 0.0F, 0.0F, GLfloat, (GLfloat));
2471 PROCESS(bSrc, BCOMP, 0.0F, 0.0F, GLfloat, (GLfloat));
2472 PROCESS(aSrc, ACOMP, 1.0F, 1.0F, GLfloat, (GLfloat));
2473 break;
2474 case GL_HALF_FLOAT_ARB:
2475 PROCESS(rSrc, RCOMP, 0.0F, 0.0F, GLhalfARB, _mesa_half_to_float);
2476 PROCESS(gSrc, GCOMP, 0.0F, 0.0F, GLhalfARB, _mesa_half_to_float);
2477 PROCESS(bSrc, BCOMP, 0.0F, 0.0F, GLhalfARB, _mesa_half_to_float);
2478 PROCESS(aSrc, ACOMP, 1.0F, 1.0F, GLhalfARB, _mesa_half_to_float);
2479 break;
2480 case GL_UNSIGNED_BYTE_3_3_2:
2481 {
2482 const GLubyte *ubsrc = (const GLubyte *) src;
2483 GLuint i;
2484 if (!intFormat) {
2485 rs = 1.0F / 7.0F;
2486 gs = 1.0F / 7.0F;
2487 bs = 1.0F / 3.0F;
2488 }
2489 for (i = 0; i < n; i ++) {
2490 GLubyte p = ubsrc[i];
2491 rgba[i][rDst] = ((p >> 5) ) * rs;
2492 rgba[i][gDst] = ((p >> 2) & 0x7) * gs;
2493 rgba[i][bDst] = ((p ) & 0x3) * bs;
2494 rgba[i][aDst] = 1.0F;
2495 }
2496 }
2497 break;
2498 case GL_UNSIGNED_BYTE_2_3_3_REV:
2499 {
2500 const GLubyte *ubsrc = (const GLubyte *) src;
2501 GLuint i;
2502 if (!intFormat) {
2503 rs = 1.0F / 7.0F;
2504 gs = 1.0F / 7.0F;
2505 bs = 1.0F / 3.0F;
2506 }
2507 for (i = 0; i < n; i ++) {
2508 GLubyte p = ubsrc[i];
2509 rgba[i][rDst] = ((p ) & 0x7) * rs;
2510 rgba[i][gDst] = ((p >> 3) & 0x7) * gs;
2511 rgba[i][bDst] = ((p >> 6) ) * bs;
2512 rgba[i][aDst] = 1.0F;
2513 }
2514 }
2515 break;
2516 case GL_UNSIGNED_SHORT_5_6_5:
2517 if (!intFormat) {
2518 rs = 1.0F / 31.0F;
2519 gs = 1.0F / 63.0F;
2520 bs = 1.0F / 31.0F;
2521 }
2522 if (swapBytes) {
2523 const GLushort *ussrc = (const GLushort *) src;
2524 GLuint i;
2525 for (i = 0; i < n; i ++) {
2526 GLushort p = ussrc[i];
2527 SWAP2BYTE(p);
2528 rgba[i][rDst] = ((p >> 11) ) * rs;
2529 rgba[i][gDst] = ((p >> 5) & 0x3f) * gs;
2530 rgba[i][bDst] = ((p ) & 0x1f) * bs;
2531 rgba[i][aDst] = 1.0F;
2532 }
2533 }
2534 else {
2535 const GLushort *ussrc = (const GLushort *) src;
2536 GLuint i;
2537 for (i = 0; i < n; i ++) {
2538 GLushort p = ussrc[i];
2539 rgba[i][rDst] = ((p >> 11) ) * rs;
2540 rgba[i][gDst] = ((p >> 5) & 0x3f) * gs;
2541 rgba[i][bDst] = ((p ) & 0x1f) * bs;
2542 rgba[i][aDst] = 1.0F;
2543 }
2544 }
2545 break;
2546 case GL_UNSIGNED_SHORT_5_6_5_REV:
2547 if (!intFormat) {
2548 rs = 1.0F / 31.0F;
2549 gs = 1.0F / 63.0F;
2550 bs = 1.0F / 31.0F;
2551 }
2552 if (swapBytes) {
2553 const GLushort *ussrc = (const GLushort *) src;
2554 GLuint i;
2555 for (i = 0; i < n; i ++) {
2556 GLushort p = ussrc[i];
2557 SWAP2BYTE(p);
2558 rgba[i][rDst] = ((p ) & 0x1f) * rs;
2559 rgba[i][gDst] = ((p >> 5) & 0x3f) * gs;
2560 rgba[i][bDst] = ((p >> 11) ) * bs;
2561 rgba[i][aDst] = 1.0F;
2562 }
2563 }
2564 else {
2565 const GLushort *ussrc = (const GLushort *) src;
2566 GLuint i;
2567 for (i = 0; i < n; i ++) {
2568 GLushort p = ussrc[i];
2569 rgba[i][rDst] = ((p ) & 0x1f) * rs;
2570 rgba[i][gDst] = ((p >> 5) & 0x3f) * gs;
2571 rgba[i][bDst] = ((p >> 11) ) * bs;
2572 rgba[i][aDst] = 1.0F;
2573 }
2574 }
2575 break;
2576 case GL_UNSIGNED_SHORT_4_4_4_4:
2577 if (!intFormat) {
2578 rs = gs = bs = as = 1.0F / 15.0F;
2579 }
2580 if (swapBytes) {
2581 const GLushort *ussrc = (const GLushort *) src;
2582 GLuint i;
2583 for (i = 0; i < n; i ++) {
2584 GLushort p = ussrc[i];
2585 SWAP2BYTE(p);
2586 rgba[i][rDst] = ((p >> 12) ) * rs;
2587 rgba[i][gDst] = ((p >> 8) & 0xf) * gs;
2588 rgba[i][bDst] = ((p >> 4) & 0xf) * bs;
2589 rgba[i][aDst] = ((p ) & 0xf) * as;
2590 }
2591 }
2592 else {
2593 const GLushort *ussrc = (const GLushort *) src;
2594 GLuint i;
2595 for (i = 0; i < n; i ++) {
2596 GLushort p = ussrc[i];
2597 rgba[i][rDst] = ((p >> 12) ) * rs;
2598 rgba[i][gDst] = ((p >> 8) & 0xf) * gs;
2599 rgba[i][bDst] = ((p >> 4) & 0xf) * bs;
2600 rgba[i][aDst] = ((p ) & 0xf) * as;
2601 }
2602 }
2603 break;
2604 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
2605 if (!intFormat) {
2606 rs = gs = bs = as = 1.0F / 15.0F;
2607 }
2608 if (swapBytes) {
2609 const GLushort *ussrc = (const GLushort *) src;
2610 GLuint i;
2611 for (i = 0; i < n; i ++) {
2612 GLushort p = ussrc[i];
2613 SWAP2BYTE(p);
2614 rgba[i][rDst] = ((p ) & 0xf) * rs;
2615 rgba[i][gDst] = ((p >> 4) & 0xf) * gs;
2616 rgba[i][bDst] = ((p >> 8) & 0xf) * bs;
2617 rgba[i][aDst] = ((p >> 12) ) * as;
2618 }
2619 }
2620 else {
2621 const GLushort *ussrc = (const GLushort *) src;
2622 GLuint i;
2623 for (i = 0; i < n; i ++) {
2624 GLushort p = ussrc[i];
2625 rgba[i][rDst] = ((p ) & 0xf) * rs;
2626 rgba[i][gDst] = ((p >> 4) & 0xf) * gs;
2627 rgba[i][bDst] = ((p >> 8) & 0xf) * bs;
2628 rgba[i][aDst] = ((p >> 12) ) * as;
2629 }
2630 }
2631 break;
2632 case GL_UNSIGNED_SHORT_5_5_5_1:
2633 if (!intFormat) {
2634 rs = gs = bs = 1.0F / 31.0F;
2635 }
2636 if (swapBytes) {
2637 const GLushort *ussrc = (const GLushort *) src;
2638 GLuint i;
2639 for (i = 0; i < n; i ++) {
2640 GLushort p = ussrc[i];
2641 SWAP2BYTE(p);
2642 rgba[i][rDst] = ((p >> 11) ) * rs;
2643 rgba[i][gDst] = ((p >> 6) & 0x1f) * gs;
2644 rgba[i][bDst] = ((p >> 1) & 0x1f) * bs;
2645 rgba[i][aDst] = ((p ) & 0x1) * as;
2646 }
2647 }
2648 else {
2649 const GLushort *ussrc = (const GLushort *) src;
2650 GLuint i;
2651 for (i = 0; i < n; i ++) {
2652 GLushort p = ussrc[i];
2653 rgba[i][rDst] = ((p >> 11) ) * rs;
2654 rgba[i][gDst] = ((p >> 6) & 0x1f) * gs;
2655 rgba[i][bDst] = ((p >> 1) & 0x1f) * bs;
2656 rgba[i][aDst] = ((p ) & 0x1) * as;
2657 }
2658 }
2659 break;
2660 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
2661 if (!intFormat) {
2662 rs = gs = bs = 1.0F / 31.0F;
2663 }
2664 if (swapBytes) {
2665 const GLushort *ussrc = (const GLushort *) src;
2666 GLuint i;
2667 for (i = 0; i < n; i ++) {
2668 GLushort p = ussrc[i];
2669 SWAP2BYTE(p);
2670 rgba[i][rDst] = ((p ) & 0x1f) * rs;
2671 rgba[i][gDst] = ((p >> 5) & 0x1f) * gs;
2672 rgba[i][bDst] = ((p >> 10) & 0x1f) * bs;
2673 rgba[i][aDst] = ((p >> 15) ) * as;
2674 }
2675 }
2676 else {
2677 const GLushort *ussrc = (const GLushort *) src;
2678 GLuint i;
2679 for (i = 0; i < n; i ++) {
2680 GLushort p = ussrc[i];
2681 rgba[i][rDst] = ((p ) & 0x1f) * rs;
2682 rgba[i][gDst] = ((p >> 5) & 0x1f) * gs;
2683 rgba[i][bDst] = ((p >> 10) & 0x1f) * bs;
2684 rgba[i][aDst] = ((p >> 15) ) * as;
2685 }
2686 }
2687 break;
2688 case GL_UNSIGNED_INT_8_8_8_8:
2689 if (swapBytes) {
2690 const GLuint *uisrc = (const GLuint *) src;
2691 GLuint i;
2692 if (intFormat) {
2693 for (i = 0; i < n; i ++) {
2694 GLuint p = uisrc[i];
2695 rgba[i][rDst] = (GLfloat) ((p ) & 0xff);
2696 rgba[i][gDst] = (GLfloat) ((p >> 8) & 0xff);
2697 rgba[i][bDst] = (GLfloat) ((p >> 16) & 0xff);
2698 rgba[i][aDst] = (GLfloat) ((p >> 24) );
2699 }
2700 }
2701 else {
2702 for (i = 0; i < n; i ++) {
2703 GLuint p = uisrc[i];
2704 rgba[i][rDst] = UBYTE_TO_FLOAT((p ) & 0xff);
2705 rgba[i][gDst] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
2706 rgba[i][bDst] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
2707 rgba[i][aDst] = UBYTE_TO_FLOAT((p >> 24) );
2708 }
2709 }
2710 }
2711 else {
2712 const GLuint *uisrc = (const GLuint *) src;
2713 GLuint i;
2714 if (intFormat) {
2715 for (i = 0; i < n; i ++) {
2716 GLuint p = uisrc[i];
2717 rgba[i][rDst] = (GLfloat) ((p >> 24) );
2718 rgba[i][gDst] = (GLfloat) ((p >> 16) & 0xff);
2719 rgba[i][bDst] = (GLfloat) ((p >> 8) & 0xff);
2720 rgba[i][aDst] = (GLfloat) ((p ) & 0xff);
2721 }
2722 }
2723 else {
2724 for (i = 0; i < n; i ++) {
2725 GLuint p = uisrc[i];
2726 rgba[i][rDst] = UBYTE_TO_FLOAT((p >> 24) );
2727 rgba[i][gDst] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
2728 rgba[i][bDst] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
2729 rgba[i][aDst] = UBYTE_TO_FLOAT((p ) & 0xff);
2730 }
2731 }
2732 }
2733 break;
2734 case GL_UNSIGNED_INT_8_8_8_8_REV:
2735 if (swapBytes) {
2736 const GLuint *uisrc = (const GLuint *) src;
2737 GLuint i;
2738 if (intFormat) {
2739 for (i = 0; i < n; i ++) {
2740 GLuint p = uisrc[i];
2741 rgba[i][rDst] = (GLfloat) ((p >> 24) );
2742 rgba[i][gDst] = (GLfloat) ((p >> 16) & 0xff);
2743 rgba[i][bDst] = (GLfloat) ((p >> 8) & 0xff);
2744 rgba[i][aDst] = (GLfloat) ((p ) & 0xff);
2745 }
2746 }
2747 else {
2748 for (i = 0; i < n; i ++) {
2749 GLuint p = uisrc[i];
2750 rgba[i][rDst] = UBYTE_TO_FLOAT((p >> 24) );
2751 rgba[i][gDst] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
2752 rgba[i][bDst] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
2753 rgba[i][aDst] = UBYTE_TO_FLOAT((p ) & 0xff);
2754 }
2755 }
2756 }
2757 else {
2758 const GLuint *uisrc = (const GLuint *) src;
2759 GLuint i;
2760 if (intFormat) {
2761 for (i = 0; i < n; i ++) {
2762 GLuint p = uisrc[i];
2763 rgba[i][rDst] = (GLfloat) ((p ) & 0xff);
2764 rgba[i][gDst] = (GLfloat) ((p >> 8) & 0xff);
2765 rgba[i][bDst] = (GLfloat) ((p >> 16) & 0xff);
2766 rgba[i][aDst] = (GLfloat) ((p >> 24) );
2767 }
2768 }
2769 else {
2770 for (i = 0; i < n; i ++) {
2771 GLuint p = uisrc[i];
2772 rgba[i][rDst] = UBYTE_TO_FLOAT((p ) & 0xff);
2773 rgba[i][gDst] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
2774 rgba[i][bDst] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
2775 rgba[i][aDst] = UBYTE_TO_FLOAT((p >> 24) );
2776 }
2777 }
2778 }
2779 break;
2780 case GL_UNSIGNED_INT_10_10_10_2:
2781 if (!intFormat) {
2782 rs = 1.0F / 1023.0F;
2783 gs = 1.0F / 1023.0F;
2784 bs = 1.0F / 1023.0F;
2785 as = 1.0F / 3.0F;
2786 }
2787 if (swapBytes) {
2788 const GLuint *uisrc = (const GLuint *) src;
2789 GLuint i;
2790 for (i = 0; i < n; i ++) {
2791 GLuint p = uisrc[i];
2792 SWAP4BYTE(p);
2793 rgba[i][rDst] = ((p >> 22) ) * rs;
2794 rgba[i][gDst] = ((p >> 12) & 0x3ff) * gs;
2795 rgba[i][bDst] = ((p >> 2) & 0x3ff) * bs;
2796 rgba[i][aDst] = ((p ) & 0x3 ) * as;
2797 }
2798 }
2799 else {
2800 const GLuint *uisrc = (const GLuint *) src;
2801 GLuint i;
2802 for (i = 0; i < n; i ++) {
2803 GLuint p = uisrc[i];
2804 rgba[i][rDst] = ((p >> 22) ) * rs;
2805 rgba[i][gDst] = ((p >> 12) & 0x3ff) * gs;
2806 rgba[i][bDst] = ((p >> 2) & 0x3ff) * bs;
2807 rgba[i][aDst] = ((p ) & 0x3 ) * as;
2808 }
2809 }
2810 break;
2811 case GL_UNSIGNED_INT_2_10_10_10_REV:
2812 if (!intFormat) {
2813 rs = 1.0F / 1023.0F;
2814 gs = 1.0F / 1023.0F;
2815 bs = 1.0F / 1023.0F;
2816 as = 1.0F / 3.0F;
2817 }
2818 if (swapBytes) {
2819 const GLuint *uisrc = (const GLuint *) src;
2820 GLuint i;
2821 for (i = 0; i < n; i ++) {
2822 GLuint p = uisrc[i];
2823 SWAP4BYTE(p);
2824 rgba[i][rDst] = ((p ) & 0x3ff) * rs;
2825 rgba[i][gDst] = ((p >> 10) & 0x3ff) * gs;
2826 rgba[i][bDst] = ((p >> 20) & 0x3ff) * bs;
2827 rgba[i][aDst] = ((p >> 30) ) * as;
2828 }
2829 }
2830 else {
2831 const GLuint *uisrc = (const GLuint *) src;
2832 GLuint i;
2833 for (i = 0; i < n; i ++) {
2834 GLuint p = uisrc[i];
2835 rgba[i][rDst] = ((p ) & 0x3ff) * rs;
2836 rgba[i][gDst] = ((p >> 10) & 0x3ff) * gs;
2837 rgba[i][bDst] = ((p >> 20) & 0x3ff) * bs;
2838 rgba[i][aDst] = ((p >> 30) ) * as;
2839 }
2840 }
2841 break;
2842 case GL_UNSIGNED_INT_5_9_9_9_REV:
2843 if (swapBytes) {
2844 const GLuint *uisrc = (const GLuint *) src;
2845 GLuint i;
2846 GLfloat f[3];
2847 for (i = 0; i < n; i ++) {
2848 GLuint p = uisrc[i];
2849 SWAP4BYTE(p);
2850 rgb9e5_to_float3(p, f);
2851 rgba[i][rDst] = f[0];
2852 rgba[i][gDst] = f[1];
2853 rgba[i][bDst] = f[2];
2854 rgba[i][aDst] = 1.0F;
2855 }
2856 }
2857 else {
2858 const GLuint *uisrc = (const GLuint *) src;
2859 GLuint i;
2860 GLfloat f[3];
2861 for (i = 0; i < n; i ++) {
2862 rgb9e5_to_float3(uisrc[i], f);
2863 rgba[i][rDst] = f[0];
2864 rgba[i][gDst] = f[1];
2865 rgba[i][bDst] = f[2];
2866 rgba[i][aDst] = 1.0F;
2867 }
2868 }
2869 break;
2870 case GL_UNSIGNED_INT_10F_11F_11F_REV:
2871 if (swapBytes) {
2872 const GLuint *uisrc = (const GLuint *) src;
2873 GLuint i;
2874 GLfloat f[3];
2875 for (i = 0; i < n; i ++) {
2876 GLuint p = uisrc[i];
2877 SWAP4BYTE(p);
2878 r11g11b10f_to_float3(p, f);
2879 rgba[i][rDst] = f[0];
2880 rgba[i][gDst] = f[1];
2881 rgba[i][bDst] = f[2];
2882 rgba[i][aDst] = 1.0F;
2883 }
2884 }
2885 else {
2886 const GLuint *uisrc = (const GLuint *) src;
2887 GLuint i;
2888 GLfloat f[3];
2889 for (i = 0; i < n; i ++) {
2890 r11g11b10f_to_float3(uisrc[i], f);
2891 rgba[i][rDst] = f[0];
2892 rgba[i][gDst] = f[1];
2893 rgba[i][bDst] = f[2];
2894 rgba[i][aDst] = 1.0F;
2895 }
2896 }
2897 break;
2898 default:
2899 _mesa_problem(NULL, "bad srcType in extract float data");
2900 break;
2901 }
2902 #undef PROCESS
2903 }
2904
2905
2906 static INLINE GLuint
2907 clamp_byte_to_uint(GLbyte b)
2908 {
2909 return b < 0 ? 0 : b;
2910 }
2911
2912
2913 static INLINE GLuint
2914 clamp_short_to_uint(GLshort s)
2915 {
2916 return s < 0 ? 0 : s;
2917 }
2918
2919
2920 static INLINE GLuint
2921 clamp_int_to_uint(GLint i)
2922 {
2923 return i < 0 ? 0 : i;
2924 }
2925
2926
2927 static INLINE GLuint
2928 clamp_float_to_uint(GLfloat f)
2929 {
2930 return f < 0.0F ? 0 : IROUND(f);
2931 }
2932
2933
2934 static INLINE GLuint
2935 clamp_half_to_uint(GLhalfARB h)
2936 {
2937 GLfloat f = _mesa_half_to_float(h);
2938 return f < 0.0F ? 0 : IROUND(f);
2939 }
2940
2941
2942 /**
2943 * \sa extract_float_rgba()
2944 */
2945 static void
2946 extract_uint_rgba(GLuint n, GLuint rgba[][4],
2947 GLenum srcFormat, GLenum srcType, const GLvoid *src,
2948 GLboolean swapBytes)
2949 {
2950 GLint rSrc, gSrc, bSrc, aSrc;
2951 GLint stride;
2952 GLint rDst, bDst, gDst, aDst;
2953
2954 ASSERT(srcFormat == GL_RED ||
2955 srcFormat == GL_GREEN ||
2956 srcFormat == GL_BLUE ||
2957 srcFormat == GL_ALPHA ||
2958 srcFormat == GL_LUMINANCE ||
2959 srcFormat == GL_LUMINANCE_ALPHA ||
2960 srcFormat == GL_INTENSITY ||
2961 srcFormat == GL_RG ||
2962 srcFormat == GL_RGB ||
2963 srcFormat == GL_BGR ||
2964 srcFormat == GL_RGBA ||
2965 srcFormat == GL_BGRA ||
2966 srcFormat == GL_ABGR_EXT ||
2967 srcFormat == GL_DU8DV8_ATI ||
2968 srcFormat == GL_DUDV_ATI ||
2969 srcFormat == GL_RED_INTEGER_EXT ||
2970 srcFormat == GL_GREEN_INTEGER_EXT ||
2971 srcFormat == GL_BLUE_INTEGER_EXT ||
2972 srcFormat == GL_ALPHA_INTEGER_EXT ||
2973 srcFormat == GL_RGB_INTEGER_EXT ||
2974 srcFormat == GL_RGBA_INTEGER_EXT ||
2975 srcFormat == GL_BGR_INTEGER_EXT ||
2976 srcFormat == GL_BGRA_INTEGER_EXT ||
2977 srcFormat == GL_LUMINANCE_INTEGER_EXT ||
2978 srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT);
2979
2980 ASSERT(srcType == GL_UNSIGNED_BYTE ||
2981 srcType == GL_BYTE ||
2982 srcType == GL_UNSIGNED_SHORT ||
2983 srcType == GL_SHORT ||
2984 srcType == GL_UNSIGNED_INT ||
2985 srcType == GL_INT ||
2986 srcType == GL_HALF_FLOAT_ARB ||
2987 srcType == GL_FLOAT ||
2988 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
2989 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
2990 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
2991 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
2992 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
2993 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
2994 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
2995 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
2996 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
2997 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
2998 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
2999 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
3000 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
3001 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
3002
3003 get_component_mapping(srcFormat,
3004 &rSrc, &gSrc, &bSrc, &aSrc,
3005 &rDst, &gDst, &bDst, &aDst);
3006
3007 stride = _mesa_components_in_format(srcFormat);
3008
3009 #define PROCESS(SRC_INDEX, DST_INDEX, DEFAULT, TYPE, CONVERSION) \
3010 if ((SRC_INDEX) < 0) { \
3011 GLuint i; \
3012 for (i = 0; i < n; i++) { \
3013 rgba[i][DST_INDEX] = DEFAULT; \
3014 } \
3015 } \
3016 else if (swapBytes) { \
3017 const TYPE *s = (const TYPE *) src; \
3018 GLuint i; \
3019 for (i = 0; i < n; i++) { \
3020 TYPE value = s[SRC_INDEX]; \
3021 if (sizeof(TYPE) == 2) { \
3022 SWAP2BYTE(value); \
3023 } \
3024 else if (sizeof(TYPE) == 4) { \
3025 SWAP4BYTE(value); \
3026 } \
3027 rgba[i][DST_INDEX] = CONVERSION(value); \
3028 s += stride; \
3029 } \
3030 } \
3031 else { \
3032 const TYPE *s = (const TYPE *) src; \
3033 GLuint i; \
3034 for (i = 0; i < n; i++) { \
3035 rgba[i][DST_INDEX] = CONVERSION(s[SRC_INDEX]); \
3036 s += stride; \
3037 } \
3038 }
3039
3040 switch (srcType) {
3041 case GL_UNSIGNED_BYTE:
3042 PROCESS(rSrc, RCOMP, 0, GLubyte, (GLuint));
3043 PROCESS(gSrc, GCOMP, 0, GLubyte, (GLuint));
3044 PROCESS(bSrc, BCOMP, 0, GLubyte, (GLuint));
3045 PROCESS(aSrc, ACOMP, 1, GLubyte, (GLuint));
3046 break;
3047 case GL_BYTE:
3048 PROCESS(rSrc, RCOMP, 0, GLbyte, clamp_byte_to_uint);
3049 PROCESS(gSrc, GCOMP, 0, GLbyte, clamp_byte_to_uint);
3050 PROCESS(bSrc, BCOMP, 0, GLbyte, clamp_byte_to_uint);
3051 PROCESS(aSrc, ACOMP, 1, GLbyte, clamp_byte_to_uint);
3052 break;
3053 case GL_UNSIGNED_SHORT:
3054 PROCESS(rSrc, RCOMP, 0, GLushort, (GLuint));
3055 PROCESS(gSrc, GCOMP, 0, GLushort, (GLuint));
3056 PROCESS(bSrc, BCOMP, 0, GLushort, (GLuint));
3057 PROCESS(aSrc, ACOMP, 1, GLushort, (GLuint));
3058 break;
3059 case GL_SHORT:
3060 PROCESS(rSrc, RCOMP, 0, GLshort, clamp_short_to_uint);
3061 PROCESS(gSrc, GCOMP, 0, GLshort, clamp_short_to_uint);
3062 PROCESS(bSrc, BCOMP, 0, GLshort, clamp_short_to_uint);
3063 PROCESS(aSrc, ACOMP, 1, GLshort, clamp_short_to_uint);
3064 break;
3065 case GL_UNSIGNED_INT:
3066 PROCESS(rSrc, RCOMP, 0, GLuint, (GLuint));
3067 PROCESS(gSrc, GCOMP, 0, GLuint, (GLuint));
3068 PROCESS(bSrc, BCOMP, 0, GLuint, (GLuint));
3069 PROCESS(aSrc, ACOMP, 1, GLuint, (GLuint));
3070 break;
3071 case GL_INT:
3072 PROCESS(rSrc, RCOMP, 0, GLint, clamp_int_to_uint);
3073 PROCESS(gSrc, GCOMP, 0, GLint, clamp_int_to_uint);
3074 PROCESS(bSrc, BCOMP, 0, GLint, clamp_int_to_uint);
3075 PROCESS(aSrc, ACOMP, 1, GLint, clamp_int_to_uint);
3076 break;
3077 case GL_FLOAT:
3078 PROCESS(rSrc, RCOMP, 0, GLfloat, clamp_float_to_uint);
3079 PROCESS(gSrc, GCOMP, 0, GLfloat, clamp_float_to_uint);
3080 PROCESS(bSrc, BCOMP, 0, GLfloat, clamp_float_to_uint);
3081 PROCESS(aSrc, ACOMP, 1, GLfloat, clamp_float_to_uint);
3082 break;
3083 case GL_HALF_FLOAT_ARB:
3084 PROCESS(rSrc, RCOMP, 0, GLhalfARB, clamp_half_to_uint);
3085 PROCESS(gSrc, GCOMP, 0, GLhalfARB, clamp_half_to_uint);
3086 PROCESS(bSrc, BCOMP, 0, GLhalfARB, clamp_half_to_uint);
3087 PROCESS(aSrc, ACOMP, 1, GLhalfARB, clamp_half_to_uint);
3088 break;
3089 case GL_UNSIGNED_BYTE_3_3_2:
3090 {
3091 const GLubyte *ubsrc = (const GLubyte *) src;
3092 GLuint i;
3093 for (i = 0; i < n; i ++) {
3094 GLubyte p = ubsrc[i];
3095 rgba[i][rDst] = ((p >> 5) );
3096 rgba[i][gDst] = ((p >> 2) & 0x7);
3097 rgba[i][bDst] = ((p ) & 0x3);
3098 rgba[i][aDst] = 1;
3099 }
3100 }
3101 break;
3102 case GL_UNSIGNED_BYTE_2_3_3_REV:
3103 {
3104 const GLubyte *ubsrc = (const GLubyte *) src;
3105 GLuint i;
3106 for (i = 0; i < n; i ++) {
3107 GLubyte p = ubsrc[i];
3108 rgba[i][rDst] = ((p ) & 0x7);
3109 rgba[i][gDst] = ((p >> 3) & 0x7);
3110 rgba[i][bDst] = ((p >> 6) );
3111 rgba[i][aDst] = 1;
3112 }
3113 }
3114 break;
3115 case GL_UNSIGNED_SHORT_5_6_5:
3116 if (swapBytes) {
3117 const GLushort *ussrc = (const GLushort *) src;
3118 GLuint i;
3119 for (i = 0; i < n; i ++) {
3120 GLushort p = ussrc[i];
3121 SWAP2BYTE(p);
3122 rgba[i][rDst] = ((p >> 11) );
3123 rgba[i][gDst] = ((p >> 5) & 0x3f);
3124 rgba[i][bDst] = ((p ) & 0x1f);
3125 rgba[i][aDst] = 1;
3126 }
3127 }
3128 else {
3129 const GLushort *ussrc = (const GLushort *) src;
3130 GLuint i;
3131 for (i = 0; i < n; i ++) {
3132 GLushort p = ussrc[i];
3133 rgba[i][rDst] = ((p >> 11) );
3134 rgba[i][gDst] = ((p >> 5) & 0x3f);
3135 rgba[i][bDst] = ((p ) & 0x1f);
3136 rgba[i][aDst] = 1;
3137 }
3138 }
3139 break;
3140 case GL_UNSIGNED_SHORT_5_6_5_REV:
3141 if (swapBytes) {
3142 const GLushort *ussrc = (const GLushort *) src;
3143 GLuint i;
3144 for (i = 0; i < n; i ++) {
3145 GLushort p = ussrc[i];
3146 SWAP2BYTE(p);
3147 rgba[i][rDst] = ((p ) & 0x1f);
3148 rgba[i][gDst] = ((p >> 5) & 0x3f);
3149 rgba[i][bDst] = ((p >> 11) );
3150 rgba[i][aDst] = 1;
3151 }
3152 }
3153 else {
3154 const GLushort *ussrc = (const GLushort *) src;
3155 GLuint i;
3156 for (i = 0; i < n; i ++) {
3157 GLushort p = ussrc[i];
3158 rgba[i][rDst] = ((p ) & 0x1f);
3159 rgba[i][gDst] = ((p >> 5) & 0x3f);
3160 rgba[i][bDst] = ((p >> 11) );
3161 rgba[i][aDst] = 1;
3162 }
3163 }
3164 break;
3165 case GL_UNSIGNED_SHORT_4_4_4_4:
3166 if (swapBytes) {
3167 const GLushort *ussrc = (const GLushort *) src;
3168 GLuint i;
3169 for (i = 0; i < n; i ++) {
3170 GLushort p = ussrc[i];
3171 SWAP2BYTE(p);
3172 rgba[i][rDst] = ((p >> 12) );
3173 rgba[i][gDst] = ((p >> 8) & 0xf);
3174 rgba[i][bDst] = ((p >> 4) & 0xf);
3175 rgba[i][aDst] = ((p ) & 0xf);
3176 }
3177 }
3178 else {
3179 const GLushort *ussrc = (const GLushort *) src;
3180 GLuint i;
3181 for (i = 0; i < n; i ++) {
3182 GLushort p = ussrc[i];
3183 rgba[i][rDst] = ((p >> 12) );
3184 rgba[i][gDst] = ((p >> 8) & 0xf);
3185 rgba[i][bDst] = ((p >> 4) & 0xf);
3186 rgba[i][aDst] = ((p ) & 0xf);
3187 }
3188 }
3189 break;
3190 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
3191 if (swapBytes) {
3192 const GLushort *ussrc = (const GLushort *) src;
3193 GLuint i;
3194 for (i = 0; i < n; i ++) {
3195 GLushort p = ussrc[i];
3196 SWAP2BYTE(p);
3197 rgba[i][rDst] = ((p ) & 0xf);
3198 rgba[i][gDst] = ((p >> 4) & 0xf);
3199 rgba[i][bDst] = ((p >> 8) & 0xf);
3200 rgba[i][aDst] = ((p >> 12) );
3201 }
3202 }
3203 else {
3204 const GLushort *ussrc = (const GLushort *) src;
3205 GLuint i;
3206 for (i = 0; i < n; i ++) {
3207 GLushort p = ussrc[i];
3208 rgba[i][rDst] = ((p ) & 0xf);
3209 rgba[i][gDst] = ((p >> 4) & 0xf);
3210 rgba[i][bDst] = ((p >> 8) & 0xf);
3211 rgba[i][aDst] = ((p >> 12) );
3212 }
3213 }
3214 break;
3215 case GL_UNSIGNED_SHORT_5_5_5_1:
3216 if (swapBytes) {
3217 const GLushort *ussrc = (const GLushort *) src;
3218 GLuint i;
3219 for (i = 0; i < n; i ++) {
3220 GLushort p = ussrc[i];
3221 SWAP2BYTE(p);
3222 rgba[i][rDst] = ((p >> 11) );
3223 rgba[i][gDst] = ((p >> 6) & 0x1f);
3224 rgba[i][bDst] = ((p >> 1) & 0x1f);
3225 rgba[i][aDst] = ((p ) & 0x1 );
3226 }
3227 }
3228 else {
3229 const GLushort *ussrc = (const GLushort *) src;
3230 GLuint i;
3231 for (i = 0; i < n; i ++) {
3232 GLushort p = ussrc[i];
3233 rgba[i][rDst] = ((p >> 11) );
3234 rgba[i][gDst] = ((p >> 6) & 0x1f);
3235 rgba[i][bDst] = ((p >> 1) & 0x1f);
3236 rgba[i][aDst] = ((p ) & 0x1 );
3237 }
3238 }
3239 break;
3240 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
3241 if (swapBytes) {
3242 const GLushort *ussrc = (const GLushort *) src;
3243 GLuint i;
3244 for (i = 0; i < n; i ++) {
3245 GLushort p = ussrc[i];
3246 SWAP2BYTE(p);
3247 rgba[i][rDst] = ((p ) & 0x1f);
3248 rgba[i][gDst] = ((p >> 5) & 0x1f);
3249 rgba[i][bDst] = ((p >> 10) & 0x1f);
3250 rgba[i][aDst] = ((p >> 15) );
3251 }
3252 }
3253 else {
3254 const GLushort *ussrc = (const GLushort *) src;
3255 GLuint i;
3256 for (i = 0; i < n; i ++) {
3257 GLushort p = ussrc[i];
3258 rgba[i][rDst] = ((p ) & 0x1f);
3259 rgba[i][gDst] = ((p >> 5) & 0x1f);
3260 rgba[i][bDst] = ((p >> 10) & 0x1f);
3261 rgba[i][aDst] = ((p >> 15) );
3262 }
3263 }
3264 break;
3265 case GL_UNSIGNED_INT_8_8_8_8:
3266 if (swapBytes) {
3267 const GLuint *uisrc = (const GLuint *) src;
3268 GLuint i;
3269 for (i = 0; i < n; i ++) {
3270 GLuint p = uisrc[i];
3271 rgba[i][rDst] = ((p ) & 0xff);
3272 rgba[i][gDst] = ((p >> 8) & 0xff);
3273 rgba[i][bDst] = ((p >> 16) & 0xff);
3274 rgba[i][aDst] = ((p >> 24) );
3275 }
3276 }
3277 else {
3278 const GLuint *uisrc = (const GLuint *) src;
3279 GLuint i;
3280 for (i = 0; i < n; i ++) {
3281 GLuint p = uisrc[i];
3282 rgba[i][rDst] = ((p >> 24) );
3283 rgba[i][gDst] = ((p >> 16) & 0xff);
3284 rgba[i][bDst] = ((p >> 8) & 0xff);
3285 rgba[i][aDst] = ((p ) & 0xff);
3286 }
3287 }
3288 break;
3289 case GL_UNSIGNED_INT_8_8_8_8_REV:
3290 if (swapBytes) {
3291 const GLuint *uisrc = (const GLuint *) src;
3292 GLuint i;
3293 for (i = 0; i < n; i ++) {
3294 GLuint p = uisrc[i];
3295 rgba[i][rDst] = ((p >> 24) );
3296 rgba[i][gDst] = ((p >> 16) & 0xff);
3297 rgba[i][bDst] = ((p >> 8) & 0xff);
3298 rgba[i][aDst] = ((p ) & 0xff);
3299 }
3300 }
3301 else {
3302 const GLuint *uisrc = (const GLuint *) src;
3303 GLuint i;
3304 for (i = 0; i < n; i ++) {
3305 GLuint p = uisrc[i];
3306 rgba[i][rDst] = ((p ) & 0xff);
3307 rgba[i][gDst] = ((p >> 8) & 0xff);
3308 rgba[i][bDst] = ((p >> 16) & 0xff);
3309 rgba[i][aDst] = ((p >> 24) );
3310 }
3311 }
3312 break;
3313 case GL_UNSIGNED_INT_10_10_10_2:
3314 if (swapBytes) {
3315 const GLuint *uisrc = (const GLuint *) src;
3316 GLuint i;
3317 for (i = 0; i < n; i ++) {
3318 GLuint p = uisrc[i];
3319 SWAP4BYTE(p);
3320 rgba[i][rDst] = ((p >> 22) );
3321 rgba[i][gDst] = ((p >> 12) & 0x3ff);
3322 rgba[i][bDst] = ((p >> 2) & 0x3ff);
3323 rgba[i][aDst] = ((p ) & 0x3 );
3324 }
3325 }
3326 else {
3327 const GLuint *uisrc = (const GLuint *) src;
3328 GLuint i;
3329 for (i = 0; i < n; i ++) {
3330 GLuint p = uisrc[i];
3331 rgba[i][rDst] = ((p >> 22) );
3332 rgba[i][gDst] = ((p >> 12) & 0x3ff);
3333 rgba[i][bDst] = ((p >> 2) & 0x3ff);
3334 rgba[i][aDst] = ((p ) & 0x3 );
3335 }
3336 }
3337 break;
3338 case GL_UNSIGNED_INT_2_10_10_10_REV:
3339 if (swapBytes) {
3340 const GLuint *uisrc = (const GLuint *) src;
3341 GLuint i;
3342 for (i = 0; i < n; i ++) {
3343 GLuint p = uisrc[i];
3344 SWAP4BYTE(p);
3345 rgba[i][rDst] = ((p ) & 0x3ff);
3346 rgba[i][gDst] = ((p >> 10) & 0x3ff);
3347 rgba[i][bDst] = ((p >> 20) & 0x3ff);
3348 rgba[i][aDst] = ((p >> 30) );
3349 }
3350 }
3351 else {
3352 const GLuint *uisrc = (const GLuint *) src;
3353 GLuint i;
3354 for (i = 0; i < n; i ++) {
3355 GLuint p = uisrc[i];
3356 rgba[i][rDst] = ((p ) & 0x3ff);
3357 rgba[i][gDst] = ((p >> 10) & 0x3ff);
3358 rgba[i][bDst] = ((p >> 20) & 0x3ff);
3359 rgba[i][aDst] = ((p >> 30) );
3360 }
3361 }
3362 break;
3363 case GL_UNSIGNED_INT_5_9_9_9_REV:
3364 if (swapBytes) {
3365 const GLuint *uisrc = (const GLuint *) src;
3366 GLuint i;
3367 float f[3];
3368 for (i = 0; i < n; i ++) {
3369 GLuint p = uisrc[i];
3370 SWAP4BYTE(p);
3371 rgb9e5_to_float3(p, f);
3372 rgba[i][rDst] = clamp_float_to_uint(f[0]);
3373 rgba[i][gDst] = clamp_float_to_uint(f[1]);
3374 rgba[i][bDst] = clamp_float_to_uint(f[2]);
3375 rgba[i][aDst] = 1;
3376 }
3377 }
3378 else {
3379 const GLuint *uisrc = (const GLuint *) src;
3380 GLuint i;
3381 float f[3];
3382 for (i = 0; i < n; i ++) {
3383 GLuint p = uisrc[i];
3384 rgb9e5_to_float3(p, f);
3385 rgba[i][rDst] = clamp_float_to_uint(f[0]);
3386 rgba[i][gDst] = clamp_float_to_uint(f[1]);
3387 rgba[i][bDst] = clamp_float_to_uint(f[2]);
3388 rgba[i][aDst] = 1;
3389 }
3390 }
3391 break;
3392 case GL_UNSIGNED_INT_10F_11F_11F_REV:
3393 if (swapBytes) {
3394 const GLuint *uisrc = (const GLuint *) src;
3395 GLuint i;
3396 float f[3];
3397 for (i = 0; i < n; i ++) {
3398 GLuint p = uisrc[i];
3399 SWAP4BYTE(p);
3400 r11g11b10f_to_float3(p, f);
3401 rgba[i][rDst] = clamp_float_to_uint(f[0]);
3402 rgba[i][gDst] = clamp_float_to_uint(f[1]);
3403 rgba[i][bDst] = clamp_float_to_uint(f[2]);
3404 rgba[i][aDst] = 1;
3405 }
3406 }
3407 else {
3408 const GLuint *uisrc = (const GLuint *) src;
3409 GLuint i;
3410 float f[3];
3411 for (i = 0; i < n; i ++) {
3412 GLuint p = uisrc[i];
3413 r11g11b10f_to_float3(p, f);
3414 rgba[i][rDst] = clamp_float_to_uint(f[0]);
3415 rgba[i][gDst] = clamp_float_to_uint(f[1]);
3416 rgba[i][bDst] = clamp_float_to_uint(f[2]);
3417 rgba[i][aDst] = 1;
3418 }
3419 }
3420 break;
3421 default:
3422 _mesa_problem(NULL, "bad srcType in extract uint data");
3423 break;
3424 }
3425 #undef PROCESS
3426 }
3427
3428
3429
3430 /*
3431 * Unpack a row of color image data from a client buffer according to
3432 * the pixel unpacking parameters.
3433 * Return GLchan values in the specified dest image format.
3434 * This is used by glDrawPixels and glTexImage?D().
3435 * \param ctx - the context
3436 * n - number of pixels in the span
3437 * dstFormat - format of destination color array
3438 * dest - the destination color array
3439 * srcFormat - source image format
3440 * srcType - source image data type
3441 * source - source image pointer
3442 * srcPacking - pixel unpacking parameters
3443 * transferOps - bitmask of IMAGE_*_BIT values of operations to apply
3444 *
3445 * XXX perhaps expand this to process whole images someday.
3446 */
3447 void
3448 _mesa_unpack_color_span_chan( struct gl_context *ctx,
3449 GLuint n, GLenum dstFormat, GLchan dest[],
3450 GLenum srcFormat, GLenum srcType,
3451 const GLvoid *source,
3452 const struct gl_pixelstore_attrib *srcPacking,
3453 GLbitfield transferOps )
3454 {
3455 ASSERT(dstFormat == GL_ALPHA ||
3456 dstFormat == GL_LUMINANCE ||
3457 dstFormat == GL_LUMINANCE_ALPHA ||
3458 dstFormat == GL_INTENSITY ||
3459 dstFormat == GL_RED ||
3460 dstFormat == GL_RG ||
3461 dstFormat == GL_RGB ||
3462 dstFormat == GL_RGBA);
3463
3464 ASSERT(srcFormat == GL_RED ||
3465 srcFormat == GL_GREEN ||
3466 srcFormat == GL_BLUE ||
3467 srcFormat == GL_ALPHA ||
3468 srcFormat == GL_LUMINANCE ||
3469 srcFormat == GL_LUMINANCE_ALPHA ||
3470 srcFormat == GL_INTENSITY ||
3471 srcFormat == GL_RG ||
3472 srcFormat == GL_RGB ||
3473 srcFormat == GL_BGR ||
3474 srcFormat == GL_RGBA ||
3475 srcFormat == GL_BGRA ||
3476 srcFormat == GL_ABGR_EXT ||
3477 srcFormat == GL_COLOR_INDEX);
3478
3479 ASSERT(srcType == GL_BITMAP ||
3480 srcType == GL_UNSIGNED_BYTE ||
3481 srcType == GL_BYTE ||
3482 srcType == GL_UNSIGNED_SHORT ||
3483 srcType == GL_SHORT ||
3484 srcType == GL_UNSIGNED_INT ||
3485 srcType == GL_INT ||
3486 srcType == GL_HALF_FLOAT_ARB ||
3487 srcType == GL_FLOAT ||
3488 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
3489 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
3490 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
3491 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
3492 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
3493 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
3494 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
3495 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
3496 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
3497 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
3498 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
3499 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
3500 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
3501 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
3502
3503 /* Try simple cases first */
3504 if (transferOps == 0) {
3505 if (srcType == CHAN_TYPE) {
3506 if (dstFormat == GL_RGBA) {
3507 if (srcFormat == GL_RGBA) {
3508 memcpy( dest, source, n * 4 * sizeof(GLchan) );
3509 return;
3510 }
3511 else if (srcFormat == GL_RGB) {
3512 GLuint i;
3513 const GLchan *src = (const GLchan *) source;
3514 GLchan *dst = dest;
3515 for (i = 0; i < n; i++) {
3516 dst[0] = src[0];
3517 dst[1] = src[1];
3518 dst[2] = src[2];
3519 dst[3] = CHAN_MAX;
3520 src += 3;
3521 dst += 4;
3522 }
3523 return;
3524 }
3525 }
3526 else if (dstFormat == GL_RGB) {
3527 if (srcFormat == GL_RGB) {
3528 memcpy( dest, source, n * 3 * sizeof(GLchan) );
3529 return;
3530 }
3531 else if (srcFormat == GL_RGBA) {
3532 GLuint i;
3533 const GLchan *src = (const GLchan *) source;
3534 GLchan *dst = dest;
3535 for (i = 0; i < n; i++) {
3536 dst[0] = src[0];
3537 dst[1] = src[1];
3538 dst[2] = src[2];
3539 src += 4;
3540 dst += 3;
3541 }
3542 return;
3543 }
3544 }
3545 else if (dstFormat == srcFormat) {
3546 GLint comps = _mesa_components_in_format(srcFormat);
3547 assert(comps > 0);
3548 memcpy( dest, source, n * comps * sizeof(GLchan) );
3549 return;
3550 }
3551 }
3552 /*
3553 * Common situation, loading 8bit RGBA/RGB source images
3554 * into 16/32 bit destination. (OSMesa16/32)
3555 */
3556 else if (srcType == GL_UNSIGNED_BYTE) {
3557 if (dstFormat == GL_RGBA) {
3558 if (srcFormat == GL_RGB) {
3559 GLuint i;
3560 const GLubyte *src = (const GLubyte *) source;
3561 GLchan *dst = dest;
3562 for (i = 0; i < n; i++) {
3563 dst[0] = UBYTE_TO_CHAN(src[0]);
3564 dst[1] = UBYTE_TO_CHAN(src[1]);
3565 dst[2] = UBYTE_TO_CHAN(src[2]);
3566 dst[3] = CHAN_MAX;
3567 src += 3;
3568 dst += 4;
3569 }
3570 return;
3571 }
3572 else if (srcFormat == GL_RGBA) {
3573 GLuint i;
3574 const GLubyte *src = (const GLubyte *) source;
3575 GLchan *dst = dest;
3576 for (i = 0; i < n; i++) {
3577 dst[0] = UBYTE_TO_CHAN(src[0]);
3578 dst[1] = UBYTE_TO_CHAN(src[1]);
3579 dst[2] = UBYTE_TO_CHAN(src[2]);
3580 dst[3] = UBYTE_TO_CHAN(src[3]);
3581 src += 4;
3582 dst += 4;
3583 }
3584 return;
3585 }
3586 }
3587 else if (dstFormat == GL_RGB) {
3588 if (srcFormat == GL_RGB) {
3589 GLuint i;
3590 const GLubyte *src = (const GLubyte *) source;
3591 GLchan *dst = dest;
3592 for (i = 0; i < n; i++) {
3593 dst[0] = UBYTE_TO_CHAN(src[0]);
3594 dst[1] = UBYTE_TO_CHAN(src[1]);
3595 dst[2] = UBYTE_TO_CHAN(src[2]);
3596 src += 3;
3597 dst += 3;
3598 }
3599 return;
3600 }
3601 else if (srcFormat == GL_RGBA) {
3602 GLuint i;
3603 const GLubyte *src = (const GLubyte *) source;
3604 GLchan *dst = dest;
3605 for (i = 0; i < n; i++) {
3606 dst[0] = UBYTE_TO_CHAN(src[0]);
3607 dst[1] = UBYTE_TO_CHAN(src[1]);
3608 dst[2] = UBYTE_TO_CHAN(src[2]);
3609 src += 4;
3610 dst += 3;
3611 }
3612 return;
3613 }
3614 }
3615 }
3616 }
3617
3618
3619 /* general solution begins here */
3620 {
3621 GLint dstComponents;
3622 GLint rDst, gDst, bDst, aDst, lDst, iDst;
3623 GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * n * sizeof(GLfloat));
3624
3625 if (!rgba) {
3626 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3627 return;
3628 }
3629
3630 dstComponents = _mesa_components_in_format( dstFormat );
3631 /* source & dest image formats should have been error checked by now */
3632 assert(dstComponents > 0);
3633
3634 /*
3635 * Extract image data and convert to RGBA floats
3636 */
3637 if (srcFormat == GL_COLOR_INDEX) {
3638 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
3639
3640 if (!indexes) {
3641 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3642 return;
3643 }
3644
3645 extract_uint_indexes(n, indexes, srcFormat, srcType, source,
3646 srcPacking);
3647
3648 /* Convert indexes to RGBA */
3649 if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
3650 _mesa_shift_and_offset_ci(ctx, n, indexes);
3651 }
3652 _mesa_map_ci_to_rgba(ctx, n, indexes, rgba);
3653
3654 /* Don't do RGBA scale/bias or RGBA->RGBA mapping if starting
3655 * with color indexes.
3656 */
3657 transferOps &= ~(IMAGE_SCALE_BIAS_BIT | IMAGE_MAP_COLOR_BIT);
3658
3659 free(indexes);
3660 }
3661 else {
3662 /* non-color index data */
3663 extract_float_rgba(n, rgba, srcFormat, srcType, source,
3664 srcPacking->SwapBytes);
3665 }
3666
3667 /* Need to clamp if returning GLubytes or GLushorts */
3668 #if CHAN_TYPE != GL_FLOAT
3669 transferOps |= IMAGE_CLAMP_BIT;
3670 #endif
3671
3672 if (transferOps) {
3673 _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba);
3674 }
3675
3676 get_component_indexes(dstFormat,
3677 &rDst, &gDst, &bDst, &aDst, &lDst, &iDst);
3678
3679 /* Now return the GLchan data in the requested dstFormat */
3680 if (rDst >= 0) {
3681 GLchan *dst = dest;
3682 GLuint i;
3683 for (i = 0; i < n; i++) {
3684 CLAMPED_FLOAT_TO_CHAN(dst[rDst], rgba[i][RCOMP]);
3685 dst += dstComponents;
3686 }
3687 }
3688
3689 if (gDst >= 0) {
3690 GLchan *dst = dest;
3691 GLuint i;
3692 for (i = 0; i < n; i++) {
3693 CLAMPED_FLOAT_TO_CHAN(dst[gDst], rgba[i][GCOMP]);
3694 dst += dstComponents;
3695 }
3696 }
3697
3698 if (bDst >= 0) {
3699 GLchan *dst = dest;
3700 GLuint i;
3701 for (i = 0; i < n; i++) {
3702 CLAMPED_FLOAT_TO_CHAN(dst[bDst], rgba[i][BCOMP]);
3703 dst += dstComponents;
3704 }
3705 }
3706
3707 if (aDst >= 0) {
3708 GLchan *dst = dest;
3709 GLuint i;
3710 for (i = 0; i < n; i++) {
3711 CLAMPED_FLOAT_TO_CHAN(dst[aDst], rgba[i][ACOMP]);
3712 dst += dstComponents;
3713 }
3714 }
3715
3716 if (iDst >= 0) {
3717 GLchan *dst = dest;
3718 GLuint i;
3719 assert(iDst == 0);
3720 assert(dstComponents == 1);
3721 for (i = 0; i < n; i++) {
3722 /* Intensity comes from red channel */
3723 CLAMPED_FLOAT_TO_CHAN(dst[i], rgba[i][RCOMP]);
3724 }
3725 }
3726
3727 if (lDst >= 0) {
3728 GLchan *dst = dest;
3729 GLuint i;
3730 assert(lDst == 0);
3731 for (i = 0; i < n; i++) {
3732 /* Luminance comes from red channel */
3733 CLAMPED_FLOAT_TO_CHAN(dst[0], rgba[i][RCOMP]);
3734 dst += dstComponents;
3735 }
3736 }
3737
3738 free(rgba);
3739 }
3740 }
3741
3742
3743 /**
3744 * Same as _mesa_unpack_color_span_chan(), but return GLfloat data
3745 * instead of GLchan.
3746 */
3747 void
3748 _mesa_unpack_color_span_float( struct gl_context *ctx,
3749 GLuint n, GLenum dstFormat, GLfloat dest[],
3750 GLenum srcFormat, GLenum srcType,
3751 const GLvoid *source,
3752 const struct gl_pixelstore_attrib *srcPacking,
3753 GLbitfield transferOps )
3754 {
3755 ASSERT(dstFormat == GL_ALPHA ||
3756 dstFormat == GL_LUMINANCE ||
3757 dstFormat == GL_LUMINANCE_ALPHA ||
3758 dstFormat == GL_INTENSITY ||
3759 dstFormat == GL_RED ||
3760 dstFormat == GL_RG ||
3761 dstFormat == GL_RGB ||
3762 dstFormat == GL_RGBA);
3763
3764 ASSERT(srcFormat == GL_RED ||
3765 srcFormat == GL_GREEN ||
3766 srcFormat == GL_BLUE ||
3767 srcFormat == GL_ALPHA ||
3768 srcFormat == GL_LUMINANCE ||
3769 srcFormat == GL_LUMINANCE_ALPHA ||
3770 srcFormat == GL_INTENSITY ||
3771 srcFormat == GL_RG ||
3772 srcFormat == GL_RGB ||
3773 srcFormat == GL_BGR ||
3774 srcFormat == GL_RGBA ||
3775 srcFormat == GL_BGRA ||
3776 srcFormat == GL_ABGR_EXT ||
3777 srcFormat == GL_RED_INTEGER_EXT ||
3778 srcFormat == GL_GREEN_INTEGER_EXT ||
3779 srcFormat == GL_BLUE_INTEGER_EXT ||
3780 srcFormat == GL_ALPHA_INTEGER_EXT ||
3781 srcFormat == GL_RGB_INTEGER_EXT ||
3782 srcFormat == GL_RGBA_INTEGER_EXT ||
3783 srcFormat == GL_BGR_INTEGER_EXT ||
3784 srcFormat == GL_BGRA_INTEGER_EXT ||
3785 srcFormat == GL_LUMINANCE_INTEGER_EXT ||
3786 srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT ||
3787 srcFormat == GL_COLOR_INDEX);
3788
3789 ASSERT(srcType == GL_BITMAP ||
3790 srcType == GL_UNSIGNED_BYTE ||
3791 srcType == GL_BYTE ||
3792 srcType == GL_UNSIGNED_SHORT ||
3793 srcType == GL_SHORT ||
3794 srcType == GL_UNSIGNED_INT ||
3795 srcType == GL_INT ||
3796 srcType == GL_HALF_FLOAT_ARB ||
3797 srcType == GL_FLOAT ||
3798 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
3799 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
3800 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
3801 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
3802 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
3803 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
3804 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
3805 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
3806 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
3807 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
3808 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
3809 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
3810 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
3811 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
3812
3813 /* general solution, no special cases, yet */
3814 {
3815 GLint dstComponents;
3816 GLint rDst, gDst, bDst, aDst, lDst, iDst;
3817 GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * n * sizeof(GLfloat));
3818
3819 if (!rgba) {
3820 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3821 return;
3822 }
3823
3824 dstComponents = _mesa_components_in_format( dstFormat );
3825 /* source & dest image formats should have been error checked by now */
3826 assert(dstComponents > 0);
3827
3828 /*
3829 * Extract image data and convert to RGBA floats
3830 */
3831 if (srcFormat == GL_COLOR_INDEX) {
3832 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
3833
3834 if (!indexes) {
3835 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3836 free(rgba);
3837 return;
3838 }
3839
3840 extract_uint_indexes(n, indexes, srcFormat, srcType, source,
3841 srcPacking);
3842
3843 /* Convert indexes to RGBA */
3844 if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
3845 _mesa_shift_and_offset_ci(ctx, n, indexes);
3846 }
3847 _mesa_map_ci_to_rgba(ctx, n, indexes, rgba);
3848
3849 /* Don't do RGBA scale/bias or RGBA->RGBA mapping if starting
3850 * with color indexes.
3851 */
3852 transferOps &= ~(IMAGE_SCALE_BIAS_BIT | IMAGE_MAP_COLOR_BIT);
3853
3854 free(indexes);
3855 }
3856 else {
3857 /* non-color index data */
3858 extract_float_rgba(n, rgba, srcFormat, srcType, source,
3859 srcPacking->SwapBytes);
3860 }
3861
3862 if (transferOps) {
3863 _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba);
3864 }
3865
3866 get_component_indexes(dstFormat,
3867 &rDst, &gDst, &bDst, &aDst, &lDst, &iDst);
3868
3869 /* Now pack results in the requested dstFormat */
3870 if (rDst >= 0) {
3871 GLfloat *dst = dest;
3872 GLuint i;
3873 for (i = 0; i < n; i++) {
3874 dst[rDst] = rgba[i][RCOMP];
3875 dst += dstComponents;
3876 }
3877 }
3878
3879 if (gDst >= 0) {
3880 GLfloat *dst = dest;
3881 GLuint i;
3882 for (i = 0; i < n; i++) {
3883 dst[gDst] = rgba[i][GCOMP];
3884 dst += dstComponents;
3885 }
3886 }
3887
3888 if (bDst >= 0) {
3889 GLfloat *dst = dest;
3890 GLuint i;
3891 for (i = 0; i < n; i++) {
3892 dst[bDst] = rgba[i][BCOMP];
3893 dst += dstComponents;
3894 }
3895 }
3896
3897 if (aDst >= 0) {
3898 GLfloat *dst = dest;
3899 GLuint i;
3900 for (i = 0; i < n; i++) {
3901 dst[aDst] = rgba[i][ACOMP];
3902 dst += dstComponents;
3903 }
3904 }
3905
3906 if (iDst >= 0) {
3907 GLfloat *dst = dest;
3908 GLuint i;
3909 assert(iDst == 0);
3910 assert(dstComponents == 1);
3911 for (i = 0; i < n; i++) {
3912 /* Intensity comes from red channel */
3913 dst[i] = rgba[i][RCOMP];
3914 }
3915 }
3916
3917 if (lDst >= 0) {
3918 GLfloat *dst = dest;
3919 GLuint i;
3920 assert(lDst == 0);
3921 for (i = 0; i < n; i++) {
3922 /* Luminance comes from red channel */
3923 dst[0] = rgba[i][RCOMP];
3924 dst += dstComponents;
3925 }
3926 }
3927
3928 free(rgba);
3929 }
3930 }
3931
3932
3933 /**
3934 * Same as _mesa_unpack_color_span_chan(), but return GLuint data
3935 * instead of GLchan.
3936 * No pixel transfer ops are applied.
3937 */
3938 void
3939 _mesa_unpack_color_span_uint(struct gl_context *ctx,
3940 GLuint n, GLenum dstFormat, GLuint *dest,
3941 GLenum srcFormat, GLenum srcType,
3942 const GLvoid *source,
3943 const struct gl_pixelstore_attrib *srcPacking)
3944 {
3945 GLuint (*rgba)[4] = (GLuint (*)[4]) malloc(n * 4 * sizeof(GLfloat));
3946
3947 if (!rgba) {
3948 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3949 return;
3950 }
3951
3952 ASSERT(dstFormat == GL_ALPHA ||
3953 dstFormat == GL_LUMINANCE ||
3954 dstFormat == GL_LUMINANCE_ALPHA ||
3955 dstFormat == GL_INTENSITY ||
3956 dstFormat == GL_RED ||
3957 dstFormat == GL_RG ||
3958 dstFormat == GL_RGB ||
3959 dstFormat == GL_RGBA);
3960
3961 ASSERT(srcFormat == GL_RED ||
3962 srcFormat == GL_GREEN ||
3963 srcFormat == GL_BLUE ||
3964 srcFormat == GL_ALPHA ||
3965 srcFormat == GL_LUMINANCE ||
3966 srcFormat == GL_LUMINANCE_ALPHA ||
3967 srcFormat == GL_INTENSITY ||
3968 srcFormat == GL_RG ||
3969 srcFormat == GL_RGB ||
3970 srcFormat == GL_BGR ||
3971 srcFormat == GL_RGBA ||
3972 srcFormat == GL_BGRA ||
3973 srcFormat == GL_ABGR_EXT ||
3974 srcFormat == GL_RED_INTEGER_EXT ||
3975 srcFormat == GL_GREEN_INTEGER_EXT ||
3976 srcFormat == GL_BLUE_INTEGER_EXT ||
3977 srcFormat == GL_ALPHA_INTEGER_EXT ||
3978 srcFormat == GL_RGB_INTEGER_EXT ||
3979 srcFormat == GL_RGBA_INTEGER_EXT ||
3980 srcFormat == GL_BGR_INTEGER_EXT ||
3981 srcFormat == GL_BGRA_INTEGER_EXT ||
3982 srcFormat == GL_LUMINANCE_INTEGER_EXT ||
3983 srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT);
3984
3985 ASSERT(srcType == GL_UNSIGNED_BYTE ||
3986 srcType == GL_BYTE ||
3987 srcType == GL_UNSIGNED_SHORT ||
3988 srcType == GL_SHORT ||
3989 srcType == GL_UNSIGNED_INT ||
3990 srcType == GL_INT ||
3991 srcType == GL_HALF_FLOAT_ARB ||
3992 srcType == GL_FLOAT ||
3993 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
3994 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
3995 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
3996 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
3997 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
3998 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
3999 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
4000 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
4001 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
4002 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
4003 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
4004 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
4005 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
4006 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
4007
4008
4009 /* Extract image data as uint[4] pixels */
4010 extract_uint_rgba(n, rgba, srcFormat, srcType, source,
4011 srcPacking->SwapBytes);
4012
4013 if (dstFormat == GL_RGBA) {
4014 /* simple case */
4015 memcpy(dest, rgba, 4 * sizeof(GLuint) * n);
4016 }
4017 else {
4018 /* general case */
4019 GLint rDst, gDst, bDst, aDst, lDst, iDst;
4020 GLint dstComponents = _mesa_components_in_format( dstFormat );
4021
4022 assert(dstComponents > 0);
4023
4024 get_component_indexes(dstFormat,
4025 &rDst, &gDst, &bDst, &aDst, &lDst, &iDst);
4026
4027 /* Now pack values in the requested dest format */
4028 if (rDst >= 0) {
4029 GLuint *dst = dest;
4030 GLuint i;
4031 for (i = 0; i < n; i++) {
4032 dst[rDst] = rgba[i][RCOMP];
4033 dst += dstComponents;
4034 }
4035 }
4036
4037 if (gDst >= 0) {
4038 GLuint *dst = dest;
4039 GLuint i;
4040 for (i = 0; i < n; i++) {
4041 dst[gDst] = rgba[i][GCOMP];
4042 dst += dstComponents;
4043 }
4044 }
4045
4046 if (bDst >= 0) {
4047 GLuint *dst = dest;
4048 GLuint i;
4049 for (i = 0; i < n; i++) {
4050 dst[bDst] = rgba[i][BCOMP];
4051 dst += dstComponents;
4052 }
4053 }
4054
4055 if (aDst >= 0) {
4056 GLuint *dst = dest;
4057 GLuint i;
4058 for (i = 0; i < n; i++) {
4059 dst[aDst] = rgba[i][ACOMP];
4060 dst += dstComponents;
4061 }
4062 }
4063
4064 if (iDst >= 0) {
4065 GLuint *dst = dest;
4066 GLuint i;
4067 assert(iDst == 0);
4068 assert(dstComponents == 1);
4069 for (i = 0; i < n; i++) {
4070 /* Intensity comes from red channel */
4071 dst[i] = rgba[i][RCOMP];
4072 }
4073 }
4074
4075 if (lDst >= 0) {
4076 GLuint *dst = dest;
4077 GLuint i;
4078 assert(lDst == 0);
4079 for (i = 0; i < n; i++) {
4080 /* Luminance comes from red channel */
4081 dst[0] = rgba[i][RCOMP];
4082 dst += dstComponents;
4083 }
4084 }
4085 }
4086
4087 free(rgba);
4088 }
4089
4090
4091
4092 /**
4093 * Similar to _mesa_unpack_color_span_float(), but for dudv data instead of rgba,
4094 * directly return GLbyte data, no transfer ops apply.
4095 */
4096 void
4097 _mesa_unpack_dudv_span_byte( struct gl_context *ctx,
4098 GLuint n, GLenum dstFormat, GLbyte dest[],
4099 GLenum srcFormat, GLenum srcType,
4100 const GLvoid *source,
4101 const struct gl_pixelstore_attrib *srcPacking,
4102 GLbitfield transferOps )
4103 {
4104 ASSERT(dstFormat == GL_DUDV_ATI);
4105 ASSERT(srcFormat == GL_DUDV_ATI ||
4106 srcFormat == GL_DU8DV8_ATI);
4107
4108 ASSERT(srcType == GL_UNSIGNED_BYTE ||
4109 srcType == GL_BYTE ||
4110 srcType == GL_UNSIGNED_SHORT ||
4111 srcType == GL_SHORT ||
4112 srcType == GL_UNSIGNED_INT ||
4113 srcType == GL_INT ||
4114 srcType == GL_HALF_FLOAT_ARB ||
4115 srcType == GL_FLOAT);
4116
4117 /* general solution */
4118 {
4119 GLint dstComponents;
4120 GLbyte *dst = dest;
4121 GLuint i;
4122 GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * n * sizeof(GLfloat));
4123
4124 if (!rgba) {
4125 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
4126 return;
4127 }
4128
4129 dstComponents = _mesa_components_in_format( dstFormat );
4130 /* source & dest image formats should have been error checked by now */
4131 assert(dstComponents > 0);
4132
4133 /*
4134 * Extract image data and convert to RGBA floats
4135 */
4136 extract_float_rgba(n, rgba, srcFormat, srcType, source,
4137 srcPacking->SwapBytes);
4138
4139
4140 /* Now determine which color channels we need to produce.
4141 * And determine the dest index (offset) within each color tuple.
4142 */
4143
4144 /* Now pack results in the requested dstFormat */
4145 for (i = 0; i < n; i++) {
4146 /* not sure - need clamp[-1,1] here? */
4147 dst[0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
4148 dst[1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
4149 dst += dstComponents;
4150 }
4151
4152 free(rgba);
4153 }
4154 }
4155
4156 /*
4157 * Unpack a row of color index data from a client buffer according to
4158 * the pixel unpacking parameters.
4159 * This is (or will be) used by glDrawPixels, glTexImage[123]D, etc.
4160 *
4161 * Args: ctx - the context
4162 * n - number of pixels
4163 * dstType - destination data type
4164 * dest - destination array
4165 * srcType - source pixel type
4166 * source - source data pointer
4167 * srcPacking - pixel unpacking parameters
4168 * transferOps - the pixel transfer operations to apply
4169 */
4170 void
4171 _mesa_unpack_index_span( struct gl_context *ctx, GLuint n,
4172 GLenum dstType, GLvoid *dest,
4173 GLenum srcType, const GLvoid *source,
4174 const struct gl_pixelstore_attrib *srcPacking,
4175 GLbitfield transferOps )
4176 {
4177 ASSERT(srcType == GL_BITMAP ||
4178 srcType == GL_UNSIGNED_BYTE ||
4179 srcType == GL_BYTE ||
4180 srcType == GL_UNSIGNED_SHORT ||
4181 srcType == GL_SHORT ||
4182 srcType == GL_UNSIGNED_INT ||
4183 srcType == GL_INT ||
4184 srcType == GL_HALF_FLOAT_ARB ||
4185 srcType == GL_FLOAT);
4186
4187 ASSERT(dstType == GL_UNSIGNED_BYTE ||
4188 dstType == GL_UNSIGNED_SHORT ||
4189 dstType == GL_UNSIGNED_INT);
4190
4191
4192 transferOps &= (IMAGE_MAP_COLOR_BIT | IMAGE_SHIFT_OFFSET_BIT);
4193
4194 /*
4195 * Try simple cases first
4196 */
4197 if (transferOps == 0 && srcType == GL_UNSIGNED_BYTE
4198 && dstType == GL_UNSIGNED_BYTE) {
4199 memcpy(dest, source, n * sizeof(GLubyte));
4200 }
4201 else if (transferOps == 0 && srcType == GL_UNSIGNED_INT
4202 && dstType == GL_UNSIGNED_INT && !srcPacking->SwapBytes) {
4203 memcpy(dest, source, n * sizeof(GLuint));
4204 }
4205 else {
4206 /*
4207 * general solution
4208 */
4209 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
4210
4211 if (!indexes) {
4212 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
4213 return;
4214 }
4215
4216 extract_uint_indexes(n, indexes, GL_COLOR_INDEX, srcType, source,
4217 srcPacking);
4218
4219 if (transferOps)
4220 _mesa_apply_ci_transfer_ops(ctx, transferOps, n, indexes);
4221
4222 /* convert to dest type */
4223 switch (dstType) {
4224 case GL_UNSIGNED_BYTE:
4225 {
4226 GLubyte *dst = (GLubyte *) dest;
4227 GLuint i;
4228 for (i = 0; i < n; i++) {
4229 dst[i] = (GLubyte) (indexes[i] & 0xff);
4230 }
4231 }
4232 break;
4233 case GL_UNSIGNED_SHORT:
4234 {
4235 GLuint *dst = (GLuint *) dest;
4236 GLuint i;
4237 for (i = 0; i < n; i++) {
4238 dst[i] = (GLushort) (indexes[i] & 0xffff);
4239 }
4240 }
4241 break;
4242 case GL_UNSIGNED_INT:
4243 memcpy(dest, indexes, n * sizeof(GLuint));
4244 break;
4245 default:
4246 _mesa_problem(ctx, "bad dstType in _mesa_unpack_index_span");
4247 }
4248
4249 free(indexes);
4250 }
4251 }
4252
4253
4254 void
4255 _mesa_pack_index_span( struct gl_context *ctx, GLuint n,
4256 GLenum dstType, GLvoid *dest, const GLuint *source,
4257 const struct gl_pixelstore_attrib *dstPacking,
4258 GLbitfield transferOps )
4259 {
4260 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
4261
4262 if (!indexes) {
4263 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel packing");
4264 return;
4265 }
4266
4267 transferOps &= (IMAGE_MAP_COLOR_BIT | IMAGE_SHIFT_OFFSET_BIT);
4268
4269 if (transferOps & (IMAGE_MAP_COLOR_BIT | IMAGE_SHIFT_OFFSET_BIT)) {
4270 /* make a copy of input */
4271 memcpy(indexes, source, n * sizeof(GLuint));
4272 _mesa_apply_ci_transfer_ops(ctx, transferOps, n, indexes);
4273 source = indexes;
4274 }
4275
4276 switch (dstType) {
4277 case GL_UNSIGNED_BYTE:
4278 {
4279 GLubyte *dst = (GLubyte *) dest;
4280 GLuint i;
4281 for (i = 0; i < n; i++) {
4282 *dst++ = (GLubyte) source[i];
4283 }
4284 }
4285 break;
4286 case GL_BYTE:
4287 {
4288 GLbyte *dst = (GLbyte *) dest;
4289 GLuint i;
4290 for (i = 0; i < n; i++) {
4291 dst[i] = (GLbyte) source[i];
4292 }
4293 }
4294 break;
4295 case GL_UNSIGNED_SHORT:
4296 {
4297 GLushort *dst = (GLushort *) dest;
4298 GLuint i;
4299 for (i = 0; i < n; i++) {
4300 dst[i] = (GLushort) source[i];
4301 }
4302 if (dstPacking->SwapBytes) {
4303 _mesa_swap2( (GLushort *) dst, n );
4304 }
4305 }
4306 break;
4307 case GL_SHORT:
4308 {
4309 GLshort *dst = (GLshort *) dest;
4310 GLuint i;
4311 for (i = 0; i < n; i++) {
4312 dst[i] = (GLshort) source[i];
4313 }
4314 if (dstPacking->SwapBytes) {
4315 _mesa_swap2( (GLushort *) dst, n );
4316 }
4317 }
4318 break;
4319 case GL_UNSIGNED_INT:
4320 {
4321 GLuint *dst = (GLuint *) dest;
4322 GLuint i;
4323 for (i = 0; i < n; i++) {
4324 dst[i] = (GLuint) source[i];
4325 }
4326 if (dstPacking->SwapBytes) {
4327 _mesa_swap4( (GLuint *) dst, n );
4328 }
4329 }
4330 break;
4331 case GL_INT:
4332 {
4333 GLint *dst = (GLint *) dest;
4334 GLuint i;
4335 for (i = 0; i < n; i++) {
4336 dst[i] = (GLint) source[i];
4337 }
4338 if (dstPacking->SwapBytes) {
4339 _mesa_swap4( (GLuint *) dst, n );
4340 }
4341 }
4342 break;
4343 case GL_FLOAT:
4344 {
4345 GLfloat *dst = (GLfloat *) dest;
4346 GLuint i;
4347 for (i = 0; i < n; i++) {
4348 dst[i] = (GLfloat) source[i];
4349 }
4350 if (dstPacking->SwapBytes) {
4351 _mesa_swap4( (GLuint *) dst, n );
4352 }
4353 }
4354 break;
4355 case GL_HALF_FLOAT_ARB:
4356 {
4357 GLhalfARB *dst = (GLhalfARB *) dest;
4358 GLuint i;
4359 for (i = 0; i < n; i++) {
4360 dst[i] = _mesa_float_to_half((GLfloat) source[i]);
4361 }
4362 if (dstPacking->SwapBytes) {
4363 _mesa_swap2( (GLushort *) dst, n );
4364 }
4365 }
4366 break;
4367 default:
4368 _mesa_problem(ctx, "bad type in _mesa_pack_index_span");
4369 }
4370
4371 free(indexes);
4372 }
4373
4374
4375 /*
4376 * Unpack a row of stencil data from a client buffer according to
4377 * the pixel unpacking parameters.
4378 * This is (or will be) used by glDrawPixels
4379 *
4380 * Args: ctx - the context
4381 * n - number of pixels
4382 * dstType - destination data type
4383 * dest - destination array
4384 * srcType - source pixel type
4385 * source - source data pointer
4386 * srcPacking - pixel unpacking parameters
4387 * transferOps - apply offset/bias/lookup ops?
4388 */
4389 void
4390 _mesa_unpack_stencil_span( struct gl_context *ctx, GLuint n,
4391 GLenum dstType, GLvoid *dest,
4392 GLenum srcType, const GLvoid *source,
4393 const struct gl_pixelstore_attrib *srcPacking,
4394 GLbitfield transferOps )
4395 {
4396 ASSERT(srcType == GL_BITMAP ||
4397 srcType == GL_UNSIGNED_BYTE ||
4398 srcType == GL_BYTE ||
4399 srcType == GL_UNSIGNED_SHORT ||
4400 srcType == GL_SHORT ||
4401 srcType == GL_UNSIGNED_INT ||
4402 srcType == GL_INT ||
4403 srcType == GL_UNSIGNED_INT_24_8_EXT ||
4404 srcType == GL_HALF_FLOAT_ARB ||
4405 srcType == GL_FLOAT ||
4406 srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
4407
4408 ASSERT(dstType == GL_UNSIGNED_BYTE ||
4409 dstType == GL_UNSIGNED_SHORT ||
4410 dstType == GL_UNSIGNED_INT ||
4411 dstType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
4412
4413 /* only shift and offset apply to stencil */
4414 transferOps &= IMAGE_SHIFT_OFFSET_BIT;
4415
4416 /*
4417 * Try simple cases first
4418 */
4419 if (transferOps == 0 &&
4420 !ctx->Pixel.MapStencilFlag &&
4421 srcType == GL_UNSIGNED_BYTE &&
4422 dstType == GL_UNSIGNED_BYTE) {
4423 memcpy(dest, source, n * sizeof(GLubyte));
4424 }
4425 else if (transferOps == 0 &&
4426 !ctx->Pixel.MapStencilFlag &&
4427 srcType == GL_UNSIGNED_INT &&
4428 dstType == GL_UNSIGNED_INT &&
4429 !srcPacking->SwapBytes) {
4430 memcpy(dest, source, n * sizeof(GLuint));
4431 }
4432 else {
4433 /*
4434 * general solution
4435 */
4436 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
4437
4438 if (!indexes) {
4439 _mesa_error(ctx, GL_OUT_OF_MEMORY, "stencil unpacking");
4440 return;
4441 }
4442
4443 extract_uint_indexes(n, indexes, GL_STENCIL_INDEX, srcType, source,
4444 srcPacking);
4445
4446 if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
4447 /* shift and offset indexes */
4448 _mesa_shift_and_offset_ci(ctx, n, indexes);
4449 }
4450
4451 if (ctx->Pixel.MapStencilFlag) {
4452 /* Apply stencil lookup table */
4453 const GLuint mask = ctx->PixelMaps.StoS.Size - 1;
4454 GLuint i;
4455 for (i = 0; i < n; i++) {
4456 indexes[i] = (GLuint)ctx->PixelMaps.StoS.Map[ indexes[i] & mask ];
4457 }
4458 }
4459
4460 /* convert to dest type */
4461 switch (dstType) {
4462 case GL_UNSIGNED_BYTE:
4463 {
4464 GLubyte *dst = (GLubyte *) dest;
4465 GLuint i;
4466 for (i = 0; i < n; i++) {
4467 dst[i] = (GLubyte) (indexes[i] & 0xff);
4468 }
4469 }
4470 break;
4471 case GL_UNSIGNED_SHORT:
4472 {
4473 GLuint *dst = (GLuint *) dest;
4474 GLuint i;
4475 for (i = 0; i < n; i++) {
4476 dst[i] = (GLushort) (indexes[i] & 0xffff);
4477 }
4478 }
4479 break;
4480 case GL_UNSIGNED_INT:
4481 memcpy(dest, indexes, n * sizeof(GLuint));
4482 break;
4483 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
4484 {
4485 GLuint *dst = (GLuint *) dest;
4486 GLuint i;
4487 for (i = 0; i < n; i++) {
4488 dst[i*2+1] = indexes[i] & 0xff; /* lower 8 bits */
4489 }
4490 }
4491 break;
4492 default:
4493 _mesa_problem(ctx, "bad dstType in _mesa_unpack_stencil_span");
4494 }
4495
4496 free(indexes);
4497 }
4498 }
4499
4500
4501 void
4502 _mesa_pack_stencil_span( struct gl_context *ctx, GLuint n,
4503 GLenum dstType, GLvoid *dest, const GLstencil *source,
4504 const struct gl_pixelstore_attrib *dstPacking )
4505 {
4506 GLstencil *stencil = (GLstencil *) malloc(n * sizeof(GLstencil));
4507
4508 if (!stencil) {
4509 _mesa_error(ctx, GL_OUT_OF_MEMORY, "stencil packing");
4510 return;
4511 }
4512
4513 if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset ||
4514 ctx->Pixel.MapStencilFlag) {
4515 /* make a copy of input */
4516 memcpy(stencil, source, n * sizeof(GLstencil));
4517 _mesa_apply_stencil_transfer_ops(ctx, n, stencil);
4518 source = stencil;
4519 }
4520
4521 switch (dstType) {
4522 case GL_UNSIGNED_BYTE:
4523 if (sizeof(GLstencil) == 1) {
4524 memcpy( dest, source, n );
4525 }
4526 else {
4527 GLubyte *dst = (GLubyte *) dest;
4528 GLuint i;
4529 for (i=0;i<n;i++) {
4530 dst[i] = (GLubyte) source[i];
4531 }
4532 }
4533 break;
4534 case GL_BYTE:
4535 {
4536 GLbyte *dst = (GLbyte *) dest;
4537 GLuint i;
4538 for (i=0;i<n;i++) {
4539 dst[i] = (GLbyte) (source[i] & 0x7f);
4540 }
4541 }
4542 break;
4543 case GL_UNSIGNED_SHORT:
4544 {
4545 GLushort *dst = (GLushort *) dest;
4546 GLuint i;
4547 for (i=0;i<n;i++) {
4548 dst[i] = (GLushort) source[i];
4549 }
4550 if (dstPacking->SwapBytes) {
4551 _mesa_swap2( (GLushort *) dst, n );
4552 }
4553 }
4554 break;
4555 case GL_SHORT:
4556 {
4557 GLshort *dst = (GLshort *) dest;
4558 GLuint i;
4559 for (i=0;i<n;i++) {
4560 dst[i] = (GLshort) source[i];
4561 }
4562 if (dstPacking->SwapBytes) {
4563 _mesa_swap2( (GLushort *) dst, n );
4564 }
4565 }
4566 break;
4567 case GL_UNSIGNED_INT:
4568 {
4569 GLuint *dst = (GLuint *) dest;
4570 GLuint i;
4571 for (i=0;i<n;i++) {
4572 dst[i] = (GLuint) source[i];
4573 }
4574 if (dstPacking->SwapBytes) {
4575 _mesa_swap4( (GLuint *) dst, n );
4576 }
4577 }
4578 break;
4579 case GL_INT:
4580 {
4581 GLint *dst = (GLint *) dest;
4582 GLuint i;
4583 for (i=0;i<n;i++) {
4584 dst[i] = (GLint) source[i];
4585 }
4586 if (dstPacking->SwapBytes) {
4587 _mesa_swap4( (GLuint *) dst, n );
4588 }
4589 }
4590 break;
4591 case GL_FLOAT:
4592 {
4593 GLfloat *dst = (GLfloat *) dest;
4594 GLuint i;
4595 for (i=0;i<n;i++) {
4596 dst[i] = (GLfloat) source[i];
4597 }
4598 if (dstPacking->SwapBytes) {
4599 _mesa_swap4( (GLuint *) dst, n );
4600 }
4601 }
4602 break;
4603 case GL_HALF_FLOAT_ARB:
4604 {
4605 GLhalfARB *dst = (GLhalfARB *) dest;
4606 GLuint i;
4607 for (i=0;i<n;i++) {
4608 dst[i] = _mesa_float_to_half( (float) source[i] );
4609 }
4610 if (dstPacking->SwapBytes) {
4611 _mesa_swap2( (GLushort *) dst, n );
4612 }
4613 }
4614 break;
4615 case GL_BITMAP:
4616 if (dstPacking->LsbFirst) {
4617 GLubyte *dst = (GLubyte *) dest;
4618 GLint shift = 0;
4619 GLuint i;
4620 for (i = 0; i < n; i++) {
4621 if (shift == 0)
4622 *dst = 0;
4623 *dst |= ((source[i] != 0) << shift);
4624 shift++;
4625 if (shift == 8) {
4626 shift = 0;
4627 dst++;
4628 }
4629 }
4630 }
4631 else {
4632 GLubyte *dst = (GLubyte *) dest;
4633 GLint shift = 7;
4634 GLuint i;
4635 for (i = 0; i < n; i++) {
4636 if (shift == 7)
4637 *dst = 0;
4638 *dst |= ((source[i] != 0) << shift);
4639 shift--;
4640 if (shift < 0) {
4641 shift = 7;
4642 dst++;
4643 }
4644 }
4645 }
4646 break;
4647 default:
4648 _mesa_problem(ctx, "bad type in _mesa_pack_index_span");
4649 }
4650
4651 free(stencil);
4652 }
4653
4654 #define DEPTH_VALUES(GLTYPE, GLTYPE2FLOAT) \
4655 do { \
4656 GLuint i; \
4657 const GLTYPE *src = (const GLTYPE *)source; \
4658 for (i = 0; i < n; i++) { \
4659 GLTYPE value = src[i]; \
4660 if (srcPacking->SwapBytes) { \
4661 if (sizeof(GLTYPE) == 2) { \
4662 SWAP2BYTE(value); \
4663 } else if (sizeof(GLTYPE) == 4) { \
4664 SWAP4BYTE(value); \
4665 } \
4666 } \
4667 depthValues[i] = GLTYPE2FLOAT(value); \
4668 } \
4669 } while (0)
4670
4671
4672 /**
4673 * Unpack a row of depth/z values from memory, returning GLushort, GLuint
4674 * or GLfloat values.
4675 * The glPixelTransfer (scale/bias) params will be applied.
4676 *
4677 * \param dstType one of GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, GL_FLOAT
4678 * \param depthMax max value for returned GLushort or GLuint values
4679 * (ignored for GLfloat).
4680 */
4681 void
4682 _mesa_unpack_depth_span( struct gl_context *ctx, GLuint n,
4683 GLenum dstType, GLvoid *dest, GLuint depthMax,
4684 GLenum srcType, const GLvoid *source,
4685 const struct gl_pixelstore_attrib *srcPacking )
4686 {
4687 GLfloat *depthTemp = NULL, *depthValues;
4688 GLboolean needClamp = GL_FALSE;
4689
4690 /* Look for special cases first.
4691 * Not only are these faster, they're less prone to numeric conversion
4692 * problems. Otherwise, converting from an int type to a float then
4693 * back to an int type can introduce errors that will show up as
4694 * artifacts in things like depth peeling which uses glCopyTexImage.
4695 */
4696 if (ctx->Pixel.DepthScale == 1.0 && ctx->Pixel.DepthBias == 0.0) {
4697 if (srcType == GL_UNSIGNED_INT && dstType == GL_UNSIGNED_SHORT) {
4698 const GLuint *src = (const GLuint *) source;
4699 GLushort *dst = (GLushort *) dest;
4700 GLuint i;
4701 for (i = 0; i < n; i++) {
4702 dst[i] = src[i] >> 16;
4703 }
4704 return;
4705 }
4706 if (srcType == GL_UNSIGNED_SHORT
4707 && dstType == GL_UNSIGNED_INT
4708 && depthMax == 0xffffffff) {
4709 const GLushort *src = (const GLushort *) source;
4710 GLuint *dst = (GLuint *) dest;
4711 GLuint i;
4712 for (i = 0; i < n; i++) {
4713 dst[i] = src[i] | (src[i] << 16);
4714 }
4715 return;
4716 }
4717 if (srcType == GL_UNSIGNED_INT_24_8
4718 && dstType == GL_UNSIGNED_INT
4719 && depthMax == 0xffffff) {
4720 const GLuint *src = (const GLuint *) source;
4721 GLuint *dst = (GLuint *) dest;
4722 GLuint i;
4723 for (i = 0; i < n; i++) {
4724 dst[i] = src[i] >> 8;
4725 }
4726 return;
4727 }
4728 /* XXX may want to add additional cases here someday */
4729 }
4730
4731 /* general case path follows */
4732
4733 if (dstType == GL_FLOAT) {
4734 depthValues = (GLfloat *) dest;
4735 }
4736 else {
4737 depthTemp = (GLfloat *) malloc(n * sizeof(GLfloat));
4738 if (!depthTemp) {
4739 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
4740 return;
4741 }
4742
4743 depthValues = depthTemp;
4744 }
4745
4746 /* Convert incoming values to GLfloat. Some conversions will require
4747 * clamping, below.
4748 */
4749 switch (srcType) {
4750 case GL_BYTE:
4751 DEPTH_VALUES(GLbyte, BYTE_TO_FLOAT);
4752 needClamp = GL_TRUE;
4753 break;
4754 case GL_UNSIGNED_BYTE:
4755 DEPTH_VALUES(GLubyte, UBYTE_TO_FLOAT);
4756 break;
4757 case GL_SHORT:
4758 DEPTH_VALUES(GLshort, SHORT_TO_FLOAT);
4759 needClamp = GL_TRUE;
4760 break;
4761 case GL_UNSIGNED_SHORT:
4762 DEPTH_VALUES(GLushort, USHORT_TO_FLOAT);
4763 break;
4764 case GL_INT:
4765 DEPTH_VALUES(GLint, INT_TO_FLOAT);
4766 needClamp = GL_TRUE;
4767 break;
4768 case GL_UNSIGNED_INT:
4769 DEPTH_VALUES(GLuint, UINT_TO_FLOAT);
4770 break;
4771 case GL_UNSIGNED_INT_24_8_EXT: /* GL_EXT_packed_depth_stencil */
4772 if (dstType == GL_UNSIGNED_INT_24_8_EXT &&
4773 depthMax == 0xffffff &&
4774 ctx->Pixel.DepthScale == 1.0 &&
4775 ctx->Pixel.DepthBias == 0.0) {
4776 const GLuint *src = (const GLuint *) source;
4777 GLuint *zValues = (GLuint *) dest;
4778 GLuint i;
4779 for (i = 0; i < n; i++) {
4780 GLuint value = src[i];
4781 if (srcPacking->SwapBytes) {
4782 SWAP4BYTE(value);
4783 }
4784 zValues[i] = value & 0xffffff00;
4785 }
4786 free(depthTemp);
4787 return;
4788 }
4789 else {
4790 const GLuint *src = (const GLuint *) source;
4791 const GLfloat scale = 1.0f / 0xffffff;
4792 GLuint i;
4793 for (i = 0; i < n; i++) {
4794 GLuint value = src[i];
4795 if (srcPacking->SwapBytes) {
4796 SWAP4BYTE(value);
4797 }
4798 depthValues[i] = (value >> 8) * scale;
4799 }
4800 }
4801 break;
4802 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
4803 {
4804 GLuint i;
4805 const GLfloat *src = (const GLfloat *)source;
4806 for (i = 0; i < n; i++) {
4807 GLfloat value = src[i * 2];
4808 if (srcPacking->SwapBytes) {
4809 SWAP4BYTE(value);
4810 }
4811 depthValues[i] = value;
4812 }
4813 needClamp = GL_TRUE;
4814 }
4815 break;
4816 case GL_FLOAT:
4817 DEPTH_VALUES(GLfloat, 1*);
4818 needClamp = GL_TRUE;
4819 break;
4820 case GL_HALF_FLOAT_ARB:
4821 {
4822 GLuint i;
4823 const GLhalfARB *src = (const GLhalfARB *) source;
4824 for (i = 0; i < n; i++) {
4825 GLhalfARB value = src[i];
4826 if (srcPacking->SwapBytes) {
4827 SWAP2BYTE(value);
4828 }
4829 depthValues[i] = _mesa_half_to_float(value);
4830 }
4831 needClamp = GL_TRUE;
4832 }
4833 break;
4834 default:
4835 _mesa_problem(NULL, "bad type in _mesa_unpack_depth_span()");
4836 free(depthTemp);
4837 return;
4838 }
4839
4840 /* apply depth scale and bias */
4841 {
4842 const GLfloat scale = ctx->Pixel.DepthScale;
4843 const GLfloat bias = ctx->Pixel.DepthBias;
4844 if (scale != 1.0 || bias != 0.0) {
4845 GLuint i;
4846 for (i = 0; i < n; i++) {
4847 depthValues[i] = depthValues[i] * scale + bias;
4848 }
4849 needClamp = GL_TRUE;
4850 }
4851 }
4852
4853 /* clamp to [0, 1] */
4854 if (needClamp) {
4855 GLuint i;
4856 for (i = 0; i < n; i++) {
4857 depthValues[i] = (GLfloat)CLAMP(depthValues[i], 0.0, 1.0);
4858 }
4859 }
4860
4861 /*
4862 * Convert values to dstType
4863 */
4864 if (dstType == GL_UNSIGNED_INT) {
4865 GLuint *zValues = (GLuint *) dest;
4866 GLuint i;
4867 if (depthMax <= 0xffffff) {
4868 /* no overflow worries */
4869 for (i = 0; i < n; i++) {
4870 zValues[i] = (GLuint) (depthValues[i] * (GLfloat) depthMax);
4871 }
4872 }
4873 else {
4874 /* need to use double precision to prevent overflow problems */
4875 for (i = 0; i < n; i++) {
4876 GLdouble z = depthValues[i] * (GLfloat) depthMax;
4877 if (z >= (GLdouble) 0xffffffff)
4878 zValues[i] = 0xffffffff;
4879 else
4880 zValues[i] = (GLuint) z;
4881 }
4882 }
4883 }
4884 else if (dstType == GL_UNSIGNED_SHORT) {
4885 GLushort *zValues = (GLushort *) dest;
4886 GLuint i;
4887 ASSERT(depthMax <= 0xffff);
4888 for (i = 0; i < n; i++) {
4889 zValues[i] = (GLushort) (depthValues[i] * (GLfloat) depthMax);
4890 }
4891 }
4892 else if (dstType == GL_FLOAT) {
4893 /* Nothing to do. depthValues is pointing to dest. */
4894 }
4895 else if (dstType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV) {
4896 GLfloat *zValues = (GLfloat*) dest;
4897 GLuint i;
4898 for (i = 0; i < n; i++) {
4899 zValues[i*2] = depthValues[i];
4900 }
4901 }
4902 else {
4903 ASSERT(0);
4904 }
4905
4906 free(depthTemp);
4907 }
4908
4909
4910 /*
4911 * Pack an array of depth values. The values are floats in [0,1].
4912 */
4913 void
4914 _mesa_pack_depth_span( struct gl_context *ctx, GLuint n, GLvoid *dest,
4915 GLenum dstType, const GLfloat *depthSpan,
4916 const struct gl_pixelstore_attrib *dstPacking )
4917 {
4918 GLfloat *depthCopy = (GLfloat *) malloc(n * sizeof(GLfloat));
4919 if (!depthCopy) {
4920 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel packing");
4921 return;
4922 }
4923
4924 if (ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0) {
4925 memcpy(depthCopy, depthSpan, n * sizeof(GLfloat));
4926 _mesa_scale_and_bias_depth(ctx, n, depthCopy);
4927 depthSpan = depthCopy;
4928 }
4929
4930 switch (dstType) {
4931 case GL_UNSIGNED_BYTE:
4932 {
4933 GLubyte *dst = (GLubyte *) dest;
4934 GLuint i;
4935 for (i = 0; i < n; i++) {
4936 dst[i] = FLOAT_TO_UBYTE( depthSpan[i] );
4937 }
4938 }
4939 break;
4940 case GL_BYTE:
4941 {
4942 GLbyte *dst = (GLbyte *) dest;
4943 GLuint i;
4944 for (i = 0; i < n; i++) {
4945 dst[i] = FLOAT_TO_BYTE( depthSpan[i] );
4946 }
4947 }
4948 break;
4949 case GL_UNSIGNED_SHORT:
4950 {
4951 GLushort *dst = (GLushort *) dest;
4952 GLuint i;
4953 for (i = 0; i < n; i++) {
4954 CLAMPED_FLOAT_TO_USHORT(dst[i], depthSpan[i]);
4955 }
4956 if (dstPacking->SwapBytes) {
4957 _mesa_swap2( (GLushort *) dst, n );
4958 }
4959 }
4960 break;
4961 case GL_SHORT:
4962 {
4963 GLshort *dst = (GLshort *) dest;
4964 GLuint i;
4965 for (i = 0; i < n; i++) {
4966 dst[i] = FLOAT_TO_SHORT( depthSpan[i] );
4967 }
4968 if (dstPacking->SwapBytes) {
4969 _mesa_swap2( (GLushort *) dst, n );
4970 }
4971 }
4972 break;
4973 case GL_UNSIGNED_INT:
4974 {
4975 GLuint *dst = (GLuint *) dest;
4976 GLuint i;
4977 for (i = 0; i < n; i++) {
4978 dst[i] = FLOAT_TO_UINT( depthSpan[i] );
4979 }
4980 if (dstPacking->SwapBytes) {
4981 _mesa_swap4( (GLuint *) dst, n );
4982 }
4983 }
4984 break;
4985 case GL_INT:
4986 {
4987 GLint *dst = (GLint *) dest;
4988 GLuint i;
4989 for (i = 0; i < n; i++) {
4990 dst[i] = FLOAT_TO_INT( depthSpan[i] );
4991 }
4992 if (dstPacking->SwapBytes) {
4993 _mesa_swap4( (GLuint *) dst, n );
4994 }
4995 }
4996 break;
4997 case GL_FLOAT:
4998 {
4999 GLfloat *dst = (GLfloat *) dest;
5000 GLuint i;
5001 for (i = 0; i < n; i++) {
5002 dst[i] = depthSpan[i];
5003 }
5004 if (dstPacking->SwapBytes) {
5005 _mesa_swap4( (GLuint *) dst, n );
5006 }
5007 }
5008 break;
5009 case GL_HALF_FLOAT_ARB:
5010 {
5011 GLhalfARB *dst = (GLhalfARB *) dest;
5012 GLuint i;
5013 for (i = 0; i < n; i++) {
5014 dst[i] = _mesa_float_to_half(depthSpan[i]);
5015 }
5016 if (dstPacking->SwapBytes) {
5017 _mesa_swap2( (GLushort *) dst, n );
5018 }
5019 }
5020 break;
5021 default:
5022 _mesa_problem(ctx, "bad type in _mesa_pack_depth_span");
5023 }
5024
5025 free(depthCopy);
5026 }
5027
5028
5029
5030 /**
5031 * Pack depth and stencil values as GL_DEPTH_STENCIL (GL_UNSIGNED_INT_24_8 etc)
5032 */
5033 void
5034 _mesa_pack_depth_stencil_span(struct gl_context *ctx,GLuint n,
5035 GLenum dstType, GLuint *dest,
5036 const GLfloat *depthVals,
5037 const GLstencil *stencilVals,
5038 const struct gl_pixelstore_attrib *dstPacking)
5039 {
5040 GLfloat *depthCopy = (GLfloat *) malloc(n * sizeof(GLfloat));
5041 GLstencil *stencilCopy = (GLstencil *) malloc(n * sizeof(GLstencil));
5042 GLuint i;
5043
5044 if (!depthCopy || !stencilCopy) {
5045 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel packing");
5046 free(depthCopy);
5047 free(stencilCopy);
5048 return;
5049 }
5050
5051 if (ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0) {
5052 memcpy(depthCopy, depthVals, n * sizeof(GLfloat));
5053 _mesa_scale_and_bias_depth(ctx, n, depthCopy);
5054 depthVals = depthCopy;
5055 }
5056
5057 if (ctx->Pixel.IndexShift ||
5058 ctx->Pixel.IndexOffset ||
5059 ctx->Pixel.MapStencilFlag) {
5060 memcpy(stencilCopy, stencilVals, n * sizeof(GLstencil));
5061 _mesa_apply_stencil_transfer_ops(ctx, n, stencilCopy);
5062 stencilVals = stencilCopy;
5063 }
5064
5065 switch (dstType) {
5066 case GL_UNSIGNED_INT_24_8:
5067 for (i = 0; i < n; i++) {
5068 GLuint z = (GLuint) (depthVals[i] * 0xffffff);
5069 dest[i] = (z << 8) | (stencilVals[i] & 0xff);
5070 }
5071 break;
5072 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
5073 for (i = 0; i < n; i++) {
5074 ((GLfloat*)dest)[i*2] = depthVals[i];
5075 dest[i*2+1] = stencilVals[i] & 0xff;
5076 }
5077 break;
5078 }
5079
5080 if (dstPacking->SwapBytes) {
5081 _mesa_swap4(dest, n);
5082 }
5083
5084 free(depthCopy);
5085 free(stencilCopy);
5086 }
5087
5088
5089
5090
5091 /**
5092 * Unpack image data. Apply byte swapping, byte flipping (bitmap).
5093 * Return all image data in a contiguous block. This is used when we
5094 * compile glDrawPixels, glTexImage, etc into a display list. We
5095 * need a copy of the data in a standard format.
5096 */
5097 void *
5098 _mesa_unpack_image( GLuint dimensions,
5099 GLsizei width, GLsizei height, GLsizei depth,
5100 GLenum format, GLenum type, const GLvoid *pixels,
5101 const struct gl_pixelstore_attrib *unpack )
5102 {
5103 GLint bytesPerRow, compsPerRow;
5104 GLboolean flipBytes, swap2, swap4;
5105
5106 if (!pixels)
5107 return NULL; /* not necessarily an error */
5108
5109 if (width <= 0 || height <= 0 || depth <= 0)
5110 return NULL; /* generate error later */
5111
5112 if (type == GL_BITMAP) {
5113 bytesPerRow = (width + 7) >> 3;
5114 flipBytes = unpack->LsbFirst;
5115 swap2 = swap4 = GL_FALSE;
5116 compsPerRow = 0;
5117 }
5118 else {
5119 const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);
5120 GLint components = _mesa_components_in_format(format);
5121 GLint bytesPerComp;
5122
5123 if (_mesa_type_is_packed(type))
5124 components = 1;
5125
5126 if (bytesPerPixel <= 0 || components <= 0)
5127 return NULL; /* bad format or type. generate error later */
5128 bytesPerRow = bytesPerPixel * width;
5129 bytesPerComp = bytesPerPixel / components;
5130 flipBytes = GL_FALSE;
5131 swap2 = (bytesPerComp == 2) && unpack->SwapBytes;
5132 swap4 = (bytesPerComp == 4) && unpack->SwapBytes;
5133 compsPerRow = components * width;
5134 assert(compsPerRow >= width);
5135 }
5136
5137 {
5138 GLubyte *destBuffer
5139 = (GLubyte *) malloc(bytesPerRow * height * depth);
5140 GLubyte *dst;
5141 GLint img, row;
5142 if (!destBuffer)
5143 return NULL; /* generate GL_OUT_OF_MEMORY later */
5144
5145 dst = destBuffer;
5146 for (img = 0; img < depth; img++) {
5147 for (row = 0; row < height; row++) {
5148 const GLvoid *src = _mesa_image_address(dimensions, unpack, pixels,
5149 width, height, format, type, img, row, 0);
5150
5151 if ((type == GL_BITMAP) && (unpack->SkipPixels & 0x7)) {
5152 GLint i;
5153 flipBytes = GL_FALSE;
5154 if (unpack->LsbFirst) {
5155 GLubyte srcMask = 1 << (unpack->SkipPixels & 0x7);
5156 GLubyte dstMask = 128;
5157 const GLubyte *s = src;
5158 GLubyte *d = dst;
5159 *d = 0;
5160 for (i = 0; i < width; i++) {
5161 if (*s & srcMask) {
5162 *d |= dstMask;
5163 }
5164 if (srcMask == 128) {
5165 srcMask = 1;
5166 s++;
5167 }
5168 else {
5169 srcMask = srcMask << 1;
5170 }
5171 if (dstMask == 1) {
5172 dstMask = 128;
5173 d++;
5174 *d = 0;
5175 }
5176 else {
5177 dstMask = dstMask >> 1;
5178 }
5179 }
5180 }
5181 else {
5182 GLubyte srcMask = 128 >> (unpack->SkipPixels & 0x7);
5183 GLubyte dstMask = 128;
5184 const GLubyte *s = src;
5185 GLubyte *d = dst;
5186 *d = 0;
5187 for (i = 0; i < width; i++) {
5188 if (*s & srcMask) {
5189 *d |= dstMask;
5190 }
5191 if (srcMask == 1) {
5192 srcMask = 128;
5193 s++;
5194 }
5195 else {
5196 srcMask = srcMask >> 1;
5197 }
5198 if (dstMask == 1) {
5199 dstMask = 128;
5200 d++;
5201 *d = 0;
5202 }
5203 else {
5204 dstMask = dstMask >> 1;
5205 }
5206 }
5207 }
5208 }
5209 else {
5210 memcpy(dst, src, bytesPerRow);
5211 }
5212
5213 /* byte flipping/swapping */
5214 if (flipBytes) {
5215 flip_bytes((GLubyte *) dst, bytesPerRow);
5216 }
5217 else if (swap2) {
5218 _mesa_swap2((GLushort*) dst, compsPerRow);
5219 }
5220 else if (swap4) {
5221 _mesa_swap4((GLuint*) dst, compsPerRow);
5222 }
5223 dst += bytesPerRow;
5224 }
5225 }
5226 return destBuffer;
5227 }
5228 }
5229