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Merge branch 'xa_branch'
[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
1976 switch (srcType) {
1977 case GL_BITMAP:
1978 {
1979 GLubyte *ubsrc = (GLubyte *) src;
1980 if (unpack->LsbFirst) {
1981 GLubyte mask = 1 << (unpack->SkipPixels & 0x7);
1982 GLuint i;
1983 for (i = 0; i < n; i++) {
1984 indexes[i] = (*ubsrc & mask) ? 1 : 0;
1985 if (mask == 128) {
1986 mask = 1;
1987 ubsrc++;
1988 }
1989 else {
1990 mask = mask << 1;
1991 }
1992 }
1993 }
1994 else {
1995 GLubyte mask = 128 >> (unpack->SkipPixels & 0x7);
1996 GLuint i;
1997 for (i = 0; i < n; i++) {
1998 indexes[i] = (*ubsrc & mask) ? 1 : 0;
1999 if (mask == 1) {
2000 mask = 128;
2001 ubsrc++;
2002 }
2003 else {
2004 mask = mask >> 1;
2005 }
2006 }
2007 }
2008 }
2009 break;
2010 case GL_UNSIGNED_BYTE:
2011 {
2012 GLuint i;
2013 const GLubyte *s = (const GLubyte *) src;
2014 for (i = 0; i < n; i++)
2015 indexes[i] = s[i];
2016 }
2017 break;
2018 case GL_BYTE:
2019 {
2020 GLuint i;
2021 const GLbyte *s = (const GLbyte *) src;
2022 for (i = 0; i < n; i++)
2023 indexes[i] = s[i];
2024 }
2025 break;
2026 case GL_UNSIGNED_SHORT:
2027 {
2028 GLuint i;
2029 const GLushort *s = (const GLushort *) src;
2030 if (unpack->SwapBytes) {
2031 for (i = 0; i < n; i++) {
2032 GLushort value = s[i];
2033 SWAP2BYTE(value);
2034 indexes[i] = value;
2035 }
2036 }
2037 else {
2038 for (i = 0; i < n; i++)
2039 indexes[i] = s[i];
2040 }
2041 }
2042 break;
2043 case GL_SHORT:
2044 {
2045 GLuint i;
2046 const GLshort *s = (const GLshort *) src;
2047 if (unpack->SwapBytes) {
2048 for (i = 0; i < n; i++) {
2049 GLshort value = s[i];
2050 SWAP2BYTE(value);
2051 indexes[i] = value;
2052 }
2053 }
2054 else {
2055 for (i = 0; i < n; i++)
2056 indexes[i] = s[i];
2057 }
2058 }
2059 break;
2060 case GL_UNSIGNED_INT:
2061 {
2062 GLuint i;
2063 const GLuint *s = (const GLuint *) src;
2064 if (unpack->SwapBytes) {
2065 for (i = 0; i < n; i++) {
2066 GLuint value = s[i];
2067 SWAP4BYTE(value);
2068 indexes[i] = value;
2069 }
2070 }
2071 else {
2072 for (i = 0; i < n; i++)
2073 indexes[i] = s[i];
2074 }
2075 }
2076 break;
2077 case GL_INT:
2078 {
2079 GLuint i;
2080 const GLint *s = (const GLint *) src;
2081 if (unpack->SwapBytes) {
2082 for (i = 0; i < n; i++) {
2083 GLint value = s[i];
2084 SWAP4BYTE(value);
2085 indexes[i] = value;
2086 }
2087 }
2088 else {
2089 for (i = 0; i < n; i++)
2090 indexes[i] = s[i];
2091 }
2092 }
2093 break;
2094 case GL_FLOAT:
2095 {
2096 GLuint i;
2097 const GLfloat *s = (const GLfloat *) src;
2098 if (unpack->SwapBytes) {
2099 for (i = 0; i < n; i++) {
2100 GLfloat value = s[i];
2101 SWAP4BYTE(value);
2102 indexes[i] = (GLuint) value;
2103 }
2104 }
2105 else {
2106 for (i = 0; i < n; i++)
2107 indexes[i] = (GLuint) s[i];
2108 }
2109 }
2110 break;
2111 case GL_HALF_FLOAT_ARB:
2112 {
2113 GLuint i;
2114 const GLhalfARB *s = (const GLhalfARB *) src;
2115 if (unpack->SwapBytes) {
2116 for (i = 0; i < n; i++) {
2117 GLhalfARB value = s[i];
2118 SWAP2BYTE(value);
2119 indexes[i] = (GLuint) _mesa_half_to_float(value);
2120 }
2121 }
2122 else {
2123 for (i = 0; i < n; i++)
2124 indexes[i] = (GLuint) _mesa_half_to_float(s[i]);
2125 }
2126 }
2127 break;
2128 case GL_UNSIGNED_INT_24_8_EXT:
2129 {
2130 GLuint i;
2131 const GLuint *s = (const GLuint *) src;
2132 if (unpack->SwapBytes) {
2133 for (i = 0; i < n; i++) {
2134 GLuint value = s[i];
2135 SWAP4BYTE(value);
2136 indexes[i] = value & 0xff; /* lower 8 bits */
2137 }
2138 }
2139 else {
2140 for (i = 0; i < n; i++)
2141 indexes[i] = s[i] & 0xff; /* lower 8 bits */
2142 }
2143 }
2144 break;
2145
2146 default:
2147 _mesa_problem(NULL, "bad srcType in extract_uint_indexes");
2148 return;
2149 }
2150 }
2151
2152
2153 /**
2154 * Return source/dest RGBA indexes for unpacking pixels.
2155 */
2156 static void
2157 get_component_mapping(GLenum format,
2158 GLint *rSrc,
2159 GLint *gSrc,
2160 GLint *bSrc,
2161 GLint *aSrc,
2162 GLint *rDst,
2163 GLint *gDst,
2164 GLint *bDst,
2165 GLint *aDst)
2166 {
2167 switch (format) {
2168 case GL_RED:
2169 case GL_RED_INTEGER_EXT:
2170 *rSrc = 0;
2171 *gSrc = *bSrc = *aSrc = -1;
2172 break;
2173 case GL_GREEN:
2174 case GL_GREEN_INTEGER_EXT:
2175 *gSrc = 0;
2176 *rSrc = *bSrc = *aSrc = -1;
2177 break;
2178 case GL_BLUE:
2179 case GL_BLUE_INTEGER_EXT:
2180 *bSrc = 0;
2181 *rSrc = *gSrc = *aSrc = -1;
2182 break;
2183 case GL_ALPHA:
2184 case GL_ALPHA_INTEGER_EXT:
2185 *rSrc = *gSrc = *bSrc = -1;
2186 *aSrc = 0;
2187 break;
2188 case GL_LUMINANCE:
2189 case GL_LUMINANCE_INTEGER_EXT:
2190 *rSrc = *gSrc = *bSrc = 0;
2191 *aSrc = -1;
2192 break;
2193 case GL_LUMINANCE_ALPHA:
2194 case GL_LUMINANCE_ALPHA_INTEGER_EXT:
2195 *rSrc = *gSrc = *bSrc = 0;
2196 *aSrc = 1;
2197 break;
2198 case GL_INTENSITY:
2199 *rSrc = *gSrc = *bSrc = *aSrc = 0;
2200 break;
2201 case GL_RG:
2202 case GL_RG_INTEGER:
2203 *rSrc = 0;
2204 *gSrc = 1;
2205 *bSrc = -1;
2206 *aSrc = -1;
2207 *rDst = 0;
2208 *gDst = 1;
2209 *bDst = 2;
2210 *aDst = 3;
2211 break;
2212 case GL_RGB:
2213 case GL_RGB_INTEGER:
2214 *rSrc = 0;
2215 *gSrc = 1;
2216 *bSrc = 2;
2217 *aSrc = -1;
2218 *rDst = 0;
2219 *gDst = 1;
2220 *bDst = 2;
2221 *aDst = 3;
2222 break;
2223 case GL_BGR:
2224 *rSrc = 2;
2225 *gSrc = 1;
2226 *bSrc = 0;
2227 *aSrc = -1;
2228 *rDst = 2;
2229 *gDst = 1;
2230 *bDst = 0;
2231 *aDst = 3;
2232 break;
2233 case GL_RGBA:
2234 case GL_RGBA_INTEGER:
2235 *rSrc = 0;
2236 *gSrc = 1;
2237 *bSrc = 2;
2238 *aSrc = 3;
2239 *rDst = 0;
2240 *gDst = 1;
2241 *bDst = 2;
2242 *aDst = 3;
2243 break;
2244 case GL_BGRA:
2245 *rSrc = 2;
2246 *gSrc = 1;
2247 *bSrc = 0;
2248 *aSrc = 3;
2249 *rDst = 2;
2250 *gDst = 1;
2251 *bDst = 0;
2252 *aDst = 3;
2253 break;
2254 case GL_ABGR_EXT:
2255 *rSrc = 3;
2256 *gSrc = 2;
2257 *bSrc = 1;
2258 *aSrc = 0;
2259 *rDst = 3;
2260 *gDst = 2;
2261 *bDst = 1;
2262 *aDst = 0;
2263 break;
2264 case GL_DU8DV8_ATI:
2265 case GL_DUDV_ATI:
2266 *rSrc = 0;
2267 *gSrc = 1;
2268 *bSrc = -1;
2269 *aSrc = -1;
2270 break;
2271 default:
2272 _mesa_problem(NULL, "bad srcFormat %s in get_component_mapping",
2273 _mesa_lookup_enum_by_nr(format));
2274 return;
2275 }
2276 }
2277
2278
2279
2280 /*
2281 * This function extracts floating point RGBA values from arbitrary
2282 * image data. srcFormat and srcType are the format and type parameters
2283 * passed to glDrawPixels, glTexImage[123]D, glTexSubImage[123]D, etc.
2284 *
2285 * Refering to section 3.6.4 of the OpenGL 1.2 spec, this function
2286 * implements the "Conversion to floating point", "Conversion to RGB",
2287 * and "Final Expansion to RGBA" operations.
2288 *
2289 * Args: n - number of pixels
2290 * rgba - output colors
2291 * srcFormat - format of incoming data
2292 * srcType - data type of incoming data
2293 * src - source data pointer
2294 * swapBytes - perform byteswapping of incoming data?
2295 */
2296 static void
2297 extract_float_rgba(GLuint n, GLfloat rgba[][4],
2298 GLenum srcFormat, GLenum srcType, const GLvoid *src,
2299 GLboolean swapBytes)
2300 {
2301 GLint rSrc, gSrc, bSrc, aSrc;
2302 GLint stride;
2303 GLint rDst, bDst, gDst, aDst;
2304 GLboolean intFormat;
2305 GLfloat rs = 1.0f, gs = 1.0f, bs = 1.0f, as = 1.0f; /* scale factors */
2306
2307 ASSERT(srcFormat == GL_RED ||
2308 srcFormat == GL_GREEN ||
2309 srcFormat == GL_BLUE ||
2310 srcFormat == GL_ALPHA ||
2311 srcFormat == GL_LUMINANCE ||
2312 srcFormat == GL_LUMINANCE_ALPHA ||
2313 srcFormat == GL_INTENSITY ||
2314 srcFormat == GL_RG ||
2315 srcFormat == GL_RGB ||
2316 srcFormat == GL_BGR ||
2317 srcFormat == GL_RGBA ||
2318 srcFormat == GL_BGRA ||
2319 srcFormat == GL_ABGR_EXT ||
2320 srcFormat == GL_DU8DV8_ATI ||
2321 srcFormat == GL_DUDV_ATI ||
2322 srcFormat == GL_RED_INTEGER_EXT ||
2323 srcFormat == GL_GREEN_INTEGER_EXT ||
2324 srcFormat == GL_BLUE_INTEGER_EXT ||
2325 srcFormat == GL_ALPHA_INTEGER_EXT ||
2326 srcFormat == GL_RGB_INTEGER_EXT ||
2327 srcFormat == GL_RGBA_INTEGER_EXT ||
2328 srcFormat == GL_BGR_INTEGER_EXT ||
2329 srcFormat == GL_BGRA_INTEGER_EXT ||
2330 srcFormat == GL_LUMINANCE_INTEGER_EXT ||
2331 srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT);
2332
2333 ASSERT(srcType == GL_UNSIGNED_BYTE ||
2334 srcType == GL_BYTE ||
2335 srcType == GL_UNSIGNED_SHORT ||
2336 srcType == GL_SHORT ||
2337 srcType == GL_UNSIGNED_INT ||
2338 srcType == GL_INT ||
2339 srcType == GL_HALF_FLOAT_ARB ||
2340 srcType == GL_FLOAT ||
2341 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
2342 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
2343 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
2344 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
2345 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
2346 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
2347 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
2348 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
2349 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
2350 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
2351 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
2352 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
2353 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
2354 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
2355
2356 get_component_mapping(srcFormat,
2357 &rSrc, &gSrc, &bSrc, &aSrc,
2358 &rDst, &gDst, &bDst, &aDst);
2359
2360 stride = _mesa_components_in_format(srcFormat);
2361
2362 intFormat = _mesa_is_integer_format(srcFormat);
2363
2364 #define PROCESS(SRC_INDEX, DST_INDEX, DEFAULT_FLT, DEFAULT_INT, TYPE, CONVERSION) \
2365 if ((SRC_INDEX) < 0) { \
2366 GLuint i; \
2367 if (intFormat) { \
2368 for (i = 0; i < n; i++) { \
2369 rgba[i][DST_INDEX] = DEFAULT_INT; \
2370 } \
2371 } \
2372 else { \
2373 for (i = 0; i < n; i++) { \
2374 rgba[i][DST_INDEX] = DEFAULT_FLT; \
2375 } \
2376 } \
2377 } \
2378 else if (swapBytes) { \
2379 const TYPE *s = (const TYPE *) src; \
2380 GLuint i; \
2381 for (i = 0; i < n; i++) { \
2382 TYPE value = s[SRC_INDEX]; \
2383 if (sizeof(TYPE) == 2) { \
2384 SWAP2BYTE(value); \
2385 } \
2386 else if (sizeof(TYPE) == 4) { \
2387 SWAP4BYTE(value); \
2388 } \
2389 if (intFormat) \
2390 rgba[i][DST_INDEX] = (GLfloat) value; \
2391 else \
2392 rgba[i][DST_INDEX] = (GLfloat) CONVERSION(value); \
2393 s += stride; \
2394 } \
2395 } \
2396 else { \
2397 const TYPE *s = (const TYPE *) src; \
2398 GLuint i; \
2399 if (intFormat) { \
2400 for (i = 0; i < n; i++) { \
2401 rgba[i][DST_INDEX] = (GLfloat) s[SRC_INDEX]; \
2402 s += stride; \
2403 } \
2404 } \
2405 else { \
2406 for (i = 0; i < n; i++) { \
2407 rgba[i][DST_INDEX] = (GLfloat) CONVERSION(s[SRC_INDEX]); \
2408 s += stride; \
2409 } \
2410 } \
2411 }
2412
2413 switch (srcType) {
2414 case GL_UNSIGNED_BYTE:
2415 PROCESS(rSrc, RCOMP, 0.0F, 0, GLubyte, UBYTE_TO_FLOAT);
2416 PROCESS(gSrc, GCOMP, 0.0F, 0, GLubyte, UBYTE_TO_FLOAT);
2417 PROCESS(bSrc, BCOMP, 0.0F, 0, GLubyte, UBYTE_TO_FLOAT);
2418 PROCESS(aSrc, ACOMP, 1.0F, 255, GLubyte, UBYTE_TO_FLOAT);
2419 break;
2420 case GL_BYTE:
2421 PROCESS(rSrc, RCOMP, 0.0F, 0, GLbyte, BYTE_TO_FLOAT);
2422 PROCESS(gSrc, GCOMP, 0.0F, 0, GLbyte, BYTE_TO_FLOAT);
2423 PROCESS(bSrc, BCOMP, 0.0F, 0, GLbyte, BYTE_TO_FLOAT);
2424 PROCESS(aSrc, ACOMP, 1.0F, 127, GLbyte, BYTE_TO_FLOAT);
2425 break;
2426 case GL_UNSIGNED_SHORT:
2427 PROCESS(rSrc, RCOMP, 0.0F, 0, GLushort, USHORT_TO_FLOAT);
2428 PROCESS(gSrc, GCOMP, 0.0F, 0, GLushort, USHORT_TO_FLOAT);
2429 PROCESS(bSrc, BCOMP, 0.0F, 0, GLushort, USHORT_TO_FLOAT);
2430 PROCESS(aSrc, ACOMP, 1.0F, 0xffff, GLushort, USHORT_TO_FLOAT);
2431 break;
2432 case GL_SHORT:
2433 PROCESS(rSrc, RCOMP, 0.0F, 0, GLshort, SHORT_TO_FLOAT);
2434 PROCESS(gSrc, GCOMP, 0.0F, 0, GLshort, SHORT_TO_FLOAT);
2435 PROCESS(bSrc, BCOMP, 0.0F, 0, GLshort, SHORT_TO_FLOAT);
2436 PROCESS(aSrc, ACOMP, 1.0F, 32767, GLshort, SHORT_TO_FLOAT);
2437 break;
2438 case GL_UNSIGNED_INT:
2439 PROCESS(rSrc, RCOMP, 0.0F, 0, GLuint, UINT_TO_FLOAT);
2440 PROCESS(gSrc, GCOMP, 0.0F, 0, GLuint, UINT_TO_FLOAT);
2441 PROCESS(bSrc, BCOMP, 0.0F, 0, GLuint, UINT_TO_FLOAT);
2442 PROCESS(aSrc, ACOMP, 1.0F, 0xffffffff, GLuint, UINT_TO_FLOAT);
2443 break;
2444 case GL_INT:
2445 PROCESS(rSrc, RCOMP, 0.0F, 0, GLint, INT_TO_FLOAT);
2446 PROCESS(gSrc, GCOMP, 0.0F, 0, GLint, INT_TO_FLOAT);
2447 PROCESS(bSrc, BCOMP, 0.0F, 0, GLint, INT_TO_FLOAT);
2448 PROCESS(aSrc, ACOMP, 1.0F, 2147483647, GLint, INT_TO_FLOAT);
2449 break;
2450 case GL_FLOAT:
2451 PROCESS(rSrc, RCOMP, 0.0F, 0.0F, GLfloat, (GLfloat));
2452 PROCESS(gSrc, GCOMP, 0.0F, 0.0F, GLfloat, (GLfloat));
2453 PROCESS(bSrc, BCOMP, 0.0F, 0.0F, GLfloat, (GLfloat));
2454 PROCESS(aSrc, ACOMP, 1.0F, 1.0F, GLfloat, (GLfloat));
2455 break;
2456 case GL_HALF_FLOAT_ARB:
2457 PROCESS(rSrc, RCOMP, 0.0F, 0.0F, GLhalfARB, _mesa_half_to_float);
2458 PROCESS(gSrc, GCOMP, 0.0F, 0.0F, GLhalfARB, _mesa_half_to_float);
2459 PROCESS(bSrc, BCOMP, 0.0F, 0.0F, GLhalfARB, _mesa_half_to_float);
2460 PROCESS(aSrc, ACOMP, 1.0F, 1.0F, GLhalfARB, _mesa_half_to_float);
2461 break;
2462 case GL_UNSIGNED_BYTE_3_3_2:
2463 {
2464 const GLubyte *ubsrc = (const GLubyte *) src;
2465 GLuint i;
2466 if (!intFormat) {
2467 rs = 1.0F / 7.0F;
2468 gs = 1.0F / 7.0F;
2469 bs = 1.0F / 3.0F;
2470 }
2471 for (i = 0; i < n; i ++) {
2472 GLubyte p = ubsrc[i];
2473 rgba[i][rDst] = ((p >> 5) ) * rs;
2474 rgba[i][gDst] = ((p >> 2) & 0x7) * gs;
2475 rgba[i][bDst] = ((p ) & 0x3) * bs;
2476 rgba[i][aDst] = 1.0F;
2477 }
2478 }
2479 break;
2480 case GL_UNSIGNED_BYTE_2_3_3_REV:
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 ) & 0x7) * rs;
2492 rgba[i][gDst] = ((p >> 3) & 0x7) * gs;
2493 rgba[i][bDst] = ((p >> 6) ) * bs;
2494 rgba[i][aDst] = 1.0F;
2495 }
2496 }
2497 break;
2498 case GL_UNSIGNED_SHORT_5_6_5:
2499 if (!intFormat) {
2500 rs = 1.0F / 31.0F;
2501 gs = 1.0F / 63.0F;
2502 bs = 1.0F / 31.0F;
2503 }
2504 if (swapBytes) {
2505 const GLushort *ussrc = (const GLushort *) src;
2506 GLuint i;
2507 for (i = 0; i < n; i ++) {
2508 GLushort p = ussrc[i];
2509 SWAP2BYTE(p);
2510 rgba[i][rDst] = ((p >> 11) ) * rs;
2511 rgba[i][gDst] = ((p >> 5) & 0x3f) * gs;
2512 rgba[i][bDst] = ((p ) & 0x1f) * bs;
2513 rgba[i][aDst] = 1.0F;
2514 }
2515 }
2516 else {
2517 const GLushort *ussrc = (const GLushort *) src;
2518 GLuint i;
2519 for (i = 0; i < n; i ++) {
2520 GLushort p = ussrc[i];
2521 rgba[i][rDst] = ((p >> 11) ) * rs;
2522 rgba[i][gDst] = ((p >> 5) & 0x3f) * gs;
2523 rgba[i][bDst] = ((p ) & 0x1f) * bs;
2524 rgba[i][aDst] = 1.0F;
2525 }
2526 }
2527 break;
2528 case GL_UNSIGNED_SHORT_5_6_5_REV:
2529 if (!intFormat) {
2530 rs = 1.0F / 31.0F;
2531 gs = 1.0F / 63.0F;
2532 bs = 1.0F / 31.0F;
2533 }
2534 if (swapBytes) {
2535 const GLushort *ussrc = (const GLushort *) src;
2536 GLuint i;
2537 for (i = 0; i < n; i ++) {
2538 GLushort p = ussrc[i];
2539 SWAP2BYTE(p);
2540 rgba[i][rDst] = ((p ) & 0x1f) * rs;
2541 rgba[i][gDst] = ((p >> 5) & 0x3f) * gs;
2542 rgba[i][bDst] = ((p >> 11) ) * bs;
2543 rgba[i][aDst] = 1.0F;
2544 }
2545 }
2546 else {
2547 const GLushort *ussrc = (const GLushort *) src;
2548 GLuint i;
2549 for (i = 0; i < n; i ++) {
2550 GLushort p = ussrc[i];
2551 rgba[i][rDst] = ((p ) & 0x1f) * rs;
2552 rgba[i][gDst] = ((p >> 5) & 0x3f) * gs;
2553 rgba[i][bDst] = ((p >> 11) ) * bs;
2554 rgba[i][aDst] = 1.0F;
2555 }
2556 }
2557 break;
2558 case GL_UNSIGNED_SHORT_4_4_4_4:
2559 if (!intFormat) {
2560 rs = gs = bs = as = 1.0F / 15.0F;
2561 }
2562 if (swapBytes) {
2563 const GLushort *ussrc = (const GLushort *) src;
2564 GLuint i;
2565 for (i = 0; i < n; i ++) {
2566 GLushort p = ussrc[i];
2567 SWAP2BYTE(p);
2568 rgba[i][rDst] = ((p >> 12) ) * rs;
2569 rgba[i][gDst] = ((p >> 8) & 0xf) * gs;
2570 rgba[i][bDst] = ((p >> 4) & 0xf) * bs;
2571 rgba[i][aDst] = ((p ) & 0xf) * as;
2572 }
2573 }
2574 else {
2575 const GLushort *ussrc = (const GLushort *) src;
2576 GLuint i;
2577 for (i = 0; i < n; i ++) {
2578 GLushort p = ussrc[i];
2579 rgba[i][rDst] = ((p >> 12) ) * rs;
2580 rgba[i][gDst] = ((p >> 8) & 0xf) * gs;
2581 rgba[i][bDst] = ((p >> 4) & 0xf) * bs;
2582 rgba[i][aDst] = ((p ) & 0xf) * as;
2583 }
2584 }
2585 break;
2586 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
2587 if (!intFormat) {
2588 rs = gs = bs = as = 1.0F / 15.0F;
2589 }
2590 if (swapBytes) {
2591 const GLushort *ussrc = (const GLushort *) src;
2592 GLuint i;
2593 for (i = 0; i < n; i ++) {
2594 GLushort p = ussrc[i];
2595 SWAP2BYTE(p);
2596 rgba[i][rDst] = ((p ) & 0xf) * rs;
2597 rgba[i][gDst] = ((p >> 4) & 0xf) * gs;
2598 rgba[i][bDst] = ((p >> 8) & 0xf) * bs;
2599 rgba[i][aDst] = ((p >> 12) ) * as;
2600 }
2601 }
2602 else {
2603 const GLushort *ussrc = (const GLushort *) src;
2604 GLuint i;
2605 for (i = 0; i < n; i ++) {
2606 GLushort p = ussrc[i];
2607 rgba[i][rDst] = ((p ) & 0xf) * rs;
2608 rgba[i][gDst] = ((p >> 4) & 0xf) * gs;
2609 rgba[i][bDst] = ((p >> 8) & 0xf) * bs;
2610 rgba[i][aDst] = ((p >> 12) ) * as;
2611 }
2612 }
2613 break;
2614 case GL_UNSIGNED_SHORT_5_5_5_1:
2615 if (!intFormat) {
2616 rs = gs = bs = 1.0F / 31.0F;
2617 }
2618 if (swapBytes) {
2619 const GLushort *ussrc = (const GLushort *) src;
2620 GLuint i;
2621 for (i = 0; i < n; i ++) {
2622 GLushort p = ussrc[i];
2623 SWAP2BYTE(p);
2624 rgba[i][rDst] = ((p >> 11) ) * rs;
2625 rgba[i][gDst] = ((p >> 6) & 0x1f) * gs;
2626 rgba[i][bDst] = ((p >> 1) & 0x1f) * bs;
2627 rgba[i][aDst] = ((p ) & 0x1) * as;
2628 }
2629 }
2630 else {
2631 const GLushort *ussrc = (const GLushort *) src;
2632 GLuint i;
2633 for (i = 0; i < n; i ++) {
2634 GLushort p = ussrc[i];
2635 rgba[i][rDst] = ((p >> 11) ) * rs;
2636 rgba[i][gDst] = ((p >> 6) & 0x1f) * gs;
2637 rgba[i][bDst] = ((p >> 1) & 0x1f) * bs;
2638 rgba[i][aDst] = ((p ) & 0x1) * as;
2639 }
2640 }
2641 break;
2642 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
2643 if (!intFormat) {
2644 rs = gs = bs = 1.0F / 31.0F;
2645 }
2646 if (swapBytes) {
2647 const GLushort *ussrc = (const GLushort *) src;
2648 GLuint i;
2649 for (i = 0; i < n; i ++) {
2650 GLushort p = ussrc[i];
2651 SWAP2BYTE(p);
2652 rgba[i][rDst] = ((p ) & 0x1f) * rs;
2653 rgba[i][gDst] = ((p >> 5) & 0x1f) * gs;
2654 rgba[i][bDst] = ((p >> 10) & 0x1f) * bs;
2655 rgba[i][aDst] = ((p >> 15) ) * as;
2656 }
2657 }
2658 else {
2659 const GLushort *ussrc = (const GLushort *) src;
2660 GLuint i;
2661 for (i = 0; i < n; i ++) {
2662 GLushort p = ussrc[i];
2663 rgba[i][rDst] = ((p ) & 0x1f) * rs;
2664 rgba[i][gDst] = ((p >> 5) & 0x1f) * gs;
2665 rgba[i][bDst] = ((p >> 10) & 0x1f) * bs;
2666 rgba[i][aDst] = ((p >> 15) ) * as;
2667 }
2668 }
2669 break;
2670 case GL_UNSIGNED_INT_8_8_8_8:
2671 if (swapBytes) {
2672 const GLuint *uisrc = (const GLuint *) src;
2673 GLuint i;
2674 if (intFormat) {
2675 for (i = 0; i < n; i ++) {
2676 GLuint p = uisrc[i];
2677 rgba[i][rDst] = (GLfloat) ((p ) & 0xff);
2678 rgba[i][gDst] = (GLfloat) ((p >> 8) & 0xff);
2679 rgba[i][bDst] = (GLfloat) ((p >> 16) & 0xff);
2680 rgba[i][aDst] = (GLfloat) ((p >> 24) );
2681 }
2682 }
2683 else {
2684 for (i = 0; i < n; i ++) {
2685 GLuint p = uisrc[i];
2686 rgba[i][rDst] = UBYTE_TO_FLOAT((p ) & 0xff);
2687 rgba[i][gDst] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
2688 rgba[i][bDst] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
2689 rgba[i][aDst] = UBYTE_TO_FLOAT((p >> 24) );
2690 }
2691 }
2692 }
2693 else {
2694 const GLuint *uisrc = (const GLuint *) src;
2695 GLuint i;
2696 if (intFormat) {
2697 for (i = 0; i < n; i ++) {
2698 GLuint p = uisrc[i];
2699 rgba[i][rDst] = (GLfloat) ((p >> 24) );
2700 rgba[i][gDst] = (GLfloat) ((p >> 16) & 0xff);
2701 rgba[i][bDst] = (GLfloat) ((p >> 8) & 0xff);
2702 rgba[i][aDst] = (GLfloat) ((p ) & 0xff);
2703 }
2704 }
2705 else {
2706 for (i = 0; i < n; i ++) {
2707 GLuint p = uisrc[i];
2708 rgba[i][rDst] = UBYTE_TO_FLOAT((p >> 24) );
2709 rgba[i][gDst] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
2710 rgba[i][bDst] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
2711 rgba[i][aDst] = UBYTE_TO_FLOAT((p ) & 0xff);
2712 }
2713 }
2714 }
2715 break;
2716 case GL_UNSIGNED_INT_8_8_8_8_REV:
2717 if (swapBytes) {
2718 const GLuint *uisrc = (const GLuint *) src;
2719 GLuint i;
2720 if (intFormat) {
2721 for (i = 0; i < n; i ++) {
2722 GLuint p = uisrc[i];
2723 rgba[i][rDst] = (GLfloat) ((p >> 24) );
2724 rgba[i][gDst] = (GLfloat) ((p >> 16) & 0xff);
2725 rgba[i][bDst] = (GLfloat) ((p >> 8) & 0xff);
2726 rgba[i][aDst] = (GLfloat) ((p ) & 0xff);
2727 }
2728 }
2729 else {
2730 for (i = 0; i < n; i ++) {
2731 GLuint p = uisrc[i];
2732 rgba[i][rDst] = UBYTE_TO_FLOAT((p >> 24) );
2733 rgba[i][gDst] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
2734 rgba[i][bDst] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
2735 rgba[i][aDst] = UBYTE_TO_FLOAT((p ) & 0xff);
2736 }
2737 }
2738 }
2739 else {
2740 const GLuint *uisrc = (const GLuint *) src;
2741 GLuint i;
2742 if (intFormat) {
2743 for (i = 0; i < n; i ++) {
2744 GLuint p = uisrc[i];
2745 rgba[i][rDst] = (GLfloat) ((p ) & 0xff);
2746 rgba[i][gDst] = (GLfloat) ((p >> 8) & 0xff);
2747 rgba[i][bDst] = (GLfloat) ((p >> 16) & 0xff);
2748 rgba[i][aDst] = (GLfloat) ((p >> 24) );
2749 }
2750 }
2751 else {
2752 for (i = 0; i < n; i ++) {
2753 GLuint p = uisrc[i];
2754 rgba[i][rDst] = UBYTE_TO_FLOAT((p ) & 0xff);
2755 rgba[i][gDst] = UBYTE_TO_FLOAT((p >> 8) & 0xff);
2756 rgba[i][bDst] = UBYTE_TO_FLOAT((p >> 16) & 0xff);
2757 rgba[i][aDst] = UBYTE_TO_FLOAT((p >> 24) );
2758 }
2759 }
2760 }
2761 break;
2762 case GL_UNSIGNED_INT_10_10_10_2:
2763 if (!intFormat) {
2764 rs = 1.0F / 1023.0F;
2765 gs = 1.0F / 1023.0F;
2766 bs = 1.0F / 1023.0F;
2767 as = 1.0F / 3.0F;
2768 }
2769 if (swapBytes) {
2770 const GLuint *uisrc = (const GLuint *) src;
2771 GLuint i;
2772 for (i = 0; i < n; i ++) {
2773 GLuint p = uisrc[i];
2774 SWAP4BYTE(p);
2775 rgba[i][rDst] = ((p >> 22) ) * rs;
2776 rgba[i][gDst] = ((p >> 12) & 0x3ff) * gs;
2777 rgba[i][bDst] = ((p >> 2) & 0x3ff) * bs;
2778 rgba[i][aDst] = ((p ) & 0x3 ) * as;
2779 }
2780 }
2781 else {
2782 const GLuint *uisrc = (const GLuint *) src;
2783 GLuint i;
2784 for (i = 0; i < n; i ++) {
2785 GLuint p = uisrc[i];
2786 rgba[i][rDst] = ((p >> 22) ) * rs;
2787 rgba[i][gDst] = ((p >> 12) & 0x3ff) * gs;
2788 rgba[i][bDst] = ((p >> 2) & 0x3ff) * bs;
2789 rgba[i][aDst] = ((p ) & 0x3 ) * as;
2790 }
2791 }
2792 break;
2793 case GL_UNSIGNED_INT_2_10_10_10_REV:
2794 if (!intFormat) {
2795 rs = 1.0F / 1023.0F;
2796 gs = 1.0F / 1023.0F;
2797 bs = 1.0F / 1023.0F;
2798 as = 1.0F / 3.0F;
2799 }
2800 if (swapBytes) {
2801 const GLuint *uisrc = (const GLuint *) src;
2802 GLuint i;
2803 for (i = 0; i < n; i ++) {
2804 GLuint p = uisrc[i];
2805 SWAP4BYTE(p);
2806 rgba[i][rDst] = ((p ) & 0x3ff) * rs;
2807 rgba[i][gDst] = ((p >> 10) & 0x3ff) * gs;
2808 rgba[i][bDst] = ((p >> 20) & 0x3ff) * bs;
2809 rgba[i][aDst] = ((p >> 30) ) * as;
2810 }
2811 }
2812 else {
2813 const GLuint *uisrc = (const GLuint *) src;
2814 GLuint i;
2815 for (i = 0; i < n; i ++) {
2816 GLuint p = uisrc[i];
2817 rgba[i][rDst] = ((p ) & 0x3ff) * rs;
2818 rgba[i][gDst] = ((p >> 10) & 0x3ff) * gs;
2819 rgba[i][bDst] = ((p >> 20) & 0x3ff) * bs;
2820 rgba[i][aDst] = ((p >> 30) ) * as;
2821 }
2822 }
2823 break;
2824 case GL_UNSIGNED_INT_5_9_9_9_REV:
2825 if (swapBytes) {
2826 const GLuint *uisrc = (const GLuint *) src;
2827 GLuint i;
2828 GLfloat f[3];
2829 for (i = 0; i < n; i ++) {
2830 GLuint p = uisrc[i];
2831 SWAP4BYTE(p);
2832 rgb9e5_to_float3(p, f);
2833 rgba[i][rDst] = f[0];
2834 rgba[i][gDst] = f[1];
2835 rgba[i][bDst] = f[2];
2836 rgba[i][aDst] = 1.0F;
2837 }
2838 }
2839 else {
2840 const GLuint *uisrc = (const GLuint *) src;
2841 GLuint i;
2842 GLfloat f[3];
2843 for (i = 0; i < n; i ++) {
2844 rgb9e5_to_float3(uisrc[i], f);
2845 rgba[i][rDst] = f[0];
2846 rgba[i][gDst] = f[1];
2847 rgba[i][bDst] = f[2];
2848 rgba[i][aDst] = 1.0F;
2849 }
2850 }
2851 break;
2852 case GL_UNSIGNED_INT_10F_11F_11F_REV:
2853 if (swapBytes) {
2854 const GLuint *uisrc = (const GLuint *) src;
2855 GLuint i;
2856 GLfloat f[3];
2857 for (i = 0; i < n; i ++) {
2858 GLuint p = uisrc[i];
2859 SWAP4BYTE(p);
2860 r11g11b10f_to_float3(p, f);
2861 rgba[i][rDst] = f[0];
2862 rgba[i][gDst] = f[1];
2863 rgba[i][bDst] = f[2];
2864 rgba[i][aDst] = 1.0F;
2865 }
2866 }
2867 else {
2868 const GLuint *uisrc = (const GLuint *) src;
2869 GLuint i;
2870 GLfloat f[3];
2871 for (i = 0; i < n; i ++) {
2872 r11g11b10f_to_float3(uisrc[i], f);
2873 rgba[i][rDst] = f[0];
2874 rgba[i][gDst] = f[1];
2875 rgba[i][bDst] = f[2];
2876 rgba[i][aDst] = 1.0F;
2877 }
2878 }
2879 break;
2880 default:
2881 _mesa_problem(NULL, "bad srcType in extract float data");
2882 break;
2883 }
2884 #undef PROCESS
2885 }
2886
2887
2888 static INLINE GLuint
2889 clamp_byte_to_uint(GLbyte b)
2890 {
2891 return b < 0 ? 0 : b;
2892 }
2893
2894
2895 static INLINE GLuint
2896 clamp_short_to_uint(GLshort s)
2897 {
2898 return s < 0 ? 0 : s;
2899 }
2900
2901
2902 static INLINE GLuint
2903 clamp_int_to_uint(GLint i)
2904 {
2905 return i < 0 ? 0 : i;
2906 }
2907
2908
2909 static INLINE GLuint
2910 clamp_float_to_uint(GLfloat f)
2911 {
2912 return f < 0.0F ? 0 : IROUND(f);
2913 }
2914
2915
2916 static INLINE GLuint
2917 clamp_half_to_uint(GLhalfARB h)
2918 {
2919 GLfloat f = _mesa_half_to_float(h);
2920 return f < 0.0F ? 0 : IROUND(f);
2921 }
2922
2923
2924 /**
2925 * \sa extract_float_rgba()
2926 */
2927 static void
2928 extract_uint_rgba(GLuint n, GLuint rgba[][4],
2929 GLenum srcFormat, GLenum srcType, const GLvoid *src,
2930 GLboolean swapBytes)
2931 {
2932 GLint rSrc, gSrc, bSrc, aSrc;
2933 GLint stride;
2934 GLint rDst, bDst, gDst, aDst;
2935
2936 ASSERT(srcFormat == GL_RED ||
2937 srcFormat == GL_GREEN ||
2938 srcFormat == GL_BLUE ||
2939 srcFormat == GL_ALPHA ||
2940 srcFormat == GL_LUMINANCE ||
2941 srcFormat == GL_LUMINANCE_ALPHA ||
2942 srcFormat == GL_INTENSITY ||
2943 srcFormat == GL_RG ||
2944 srcFormat == GL_RGB ||
2945 srcFormat == GL_BGR ||
2946 srcFormat == GL_RGBA ||
2947 srcFormat == GL_BGRA ||
2948 srcFormat == GL_ABGR_EXT ||
2949 srcFormat == GL_DU8DV8_ATI ||
2950 srcFormat == GL_DUDV_ATI ||
2951 srcFormat == GL_RED_INTEGER_EXT ||
2952 srcFormat == GL_GREEN_INTEGER_EXT ||
2953 srcFormat == GL_BLUE_INTEGER_EXT ||
2954 srcFormat == GL_ALPHA_INTEGER_EXT ||
2955 srcFormat == GL_RGB_INTEGER_EXT ||
2956 srcFormat == GL_RGBA_INTEGER_EXT ||
2957 srcFormat == GL_BGR_INTEGER_EXT ||
2958 srcFormat == GL_BGRA_INTEGER_EXT ||
2959 srcFormat == GL_LUMINANCE_INTEGER_EXT ||
2960 srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT);
2961
2962 ASSERT(srcType == GL_UNSIGNED_BYTE ||
2963 srcType == GL_BYTE ||
2964 srcType == GL_UNSIGNED_SHORT ||
2965 srcType == GL_SHORT ||
2966 srcType == GL_UNSIGNED_INT ||
2967 srcType == GL_INT ||
2968 srcType == GL_HALF_FLOAT_ARB ||
2969 srcType == GL_FLOAT ||
2970 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
2971 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
2972 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
2973 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
2974 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
2975 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
2976 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
2977 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
2978 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
2979 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
2980 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
2981 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
2982 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
2983 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
2984
2985 get_component_mapping(srcFormat,
2986 &rSrc, &gSrc, &bSrc, &aSrc,
2987 &rDst, &gDst, &bDst, &aDst);
2988
2989 stride = _mesa_components_in_format(srcFormat);
2990
2991 #define PROCESS(SRC_INDEX, DST_INDEX, DEFAULT, TYPE, CONVERSION) \
2992 if ((SRC_INDEX) < 0) { \
2993 GLuint i; \
2994 for (i = 0; i < n; i++) { \
2995 rgba[i][DST_INDEX] = DEFAULT; \
2996 } \
2997 } \
2998 else if (swapBytes) { \
2999 const TYPE *s = (const TYPE *) src; \
3000 GLuint i; \
3001 for (i = 0; i < n; i++) { \
3002 TYPE value = s[SRC_INDEX]; \
3003 if (sizeof(TYPE) == 2) { \
3004 SWAP2BYTE(value); \
3005 } \
3006 else if (sizeof(TYPE) == 4) { \
3007 SWAP4BYTE(value); \
3008 } \
3009 rgba[i][DST_INDEX] = CONVERSION(value); \
3010 s += stride; \
3011 } \
3012 } \
3013 else { \
3014 const TYPE *s = (const TYPE *) src; \
3015 GLuint i; \
3016 for (i = 0; i < n; i++) { \
3017 rgba[i][DST_INDEX] = CONVERSION(s[SRC_INDEX]); \
3018 s += stride; \
3019 } \
3020 }
3021
3022 switch (srcType) {
3023 case GL_UNSIGNED_BYTE:
3024 PROCESS(rSrc, RCOMP, 0, GLubyte, (GLuint));
3025 PROCESS(gSrc, GCOMP, 0, GLubyte, (GLuint));
3026 PROCESS(bSrc, BCOMP, 0, GLubyte, (GLuint));
3027 PROCESS(aSrc, ACOMP, 1, GLubyte, (GLuint));
3028 break;
3029 case GL_BYTE:
3030 PROCESS(rSrc, RCOMP, 0, GLbyte, clamp_byte_to_uint);
3031 PROCESS(gSrc, GCOMP, 0, GLbyte, clamp_byte_to_uint);
3032 PROCESS(bSrc, BCOMP, 0, GLbyte, clamp_byte_to_uint);
3033 PROCESS(aSrc, ACOMP, 1, GLbyte, clamp_byte_to_uint);
3034 break;
3035 case GL_UNSIGNED_SHORT:
3036 PROCESS(rSrc, RCOMP, 0, GLushort, (GLuint));
3037 PROCESS(gSrc, GCOMP, 0, GLushort, (GLuint));
3038 PROCESS(bSrc, BCOMP, 0, GLushort, (GLuint));
3039 PROCESS(aSrc, ACOMP, 1, GLushort, (GLuint));
3040 break;
3041 case GL_SHORT:
3042 PROCESS(rSrc, RCOMP, 0, GLshort, clamp_short_to_uint);
3043 PROCESS(gSrc, GCOMP, 0, GLshort, clamp_short_to_uint);
3044 PROCESS(bSrc, BCOMP, 0, GLshort, clamp_short_to_uint);
3045 PROCESS(aSrc, ACOMP, 1, GLshort, clamp_short_to_uint);
3046 break;
3047 case GL_UNSIGNED_INT:
3048 PROCESS(rSrc, RCOMP, 0, GLuint, (GLuint));
3049 PROCESS(gSrc, GCOMP, 0, GLuint, (GLuint));
3050 PROCESS(bSrc, BCOMP, 0, GLuint, (GLuint));
3051 PROCESS(aSrc, ACOMP, 1, GLuint, (GLuint));
3052 break;
3053 case GL_INT:
3054 PROCESS(rSrc, RCOMP, 0, GLint, clamp_int_to_uint);
3055 PROCESS(gSrc, GCOMP, 0, GLint, clamp_int_to_uint);
3056 PROCESS(bSrc, BCOMP, 0, GLint, clamp_int_to_uint);
3057 PROCESS(aSrc, ACOMP, 1, GLint, clamp_int_to_uint);
3058 break;
3059 case GL_FLOAT:
3060 PROCESS(rSrc, RCOMP, 0, GLfloat, clamp_float_to_uint);
3061 PROCESS(gSrc, GCOMP, 0, GLfloat, clamp_float_to_uint);
3062 PROCESS(bSrc, BCOMP, 0, GLfloat, clamp_float_to_uint);
3063 PROCESS(aSrc, ACOMP, 1, GLfloat, clamp_float_to_uint);
3064 break;
3065 case GL_HALF_FLOAT_ARB:
3066 PROCESS(rSrc, RCOMP, 0, GLhalfARB, clamp_half_to_uint);
3067 PROCESS(gSrc, GCOMP, 0, GLhalfARB, clamp_half_to_uint);
3068 PROCESS(bSrc, BCOMP, 0, GLhalfARB, clamp_half_to_uint);
3069 PROCESS(aSrc, ACOMP, 1, GLhalfARB, clamp_half_to_uint);
3070 break;
3071 case GL_UNSIGNED_BYTE_3_3_2:
3072 {
3073 const GLubyte *ubsrc = (const GLubyte *) src;
3074 GLuint i;
3075 for (i = 0; i < n; i ++) {
3076 GLubyte p = ubsrc[i];
3077 rgba[i][rDst] = ((p >> 5) );
3078 rgba[i][gDst] = ((p >> 2) & 0x7);
3079 rgba[i][bDst] = ((p ) & 0x3);
3080 rgba[i][aDst] = 1;
3081 }
3082 }
3083 break;
3084 case GL_UNSIGNED_BYTE_2_3_3_REV:
3085 {
3086 const GLubyte *ubsrc = (const GLubyte *) src;
3087 GLuint i;
3088 for (i = 0; i < n; i ++) {
3089 GLubyte p = ubsrc[i];
3090 rgba[i][rDst] = ((p ) & 0x7);
3091 rgba[i][gDst] = ((p >> 3) & 0x7);
3092 rgba[i][bDst] = ((p >> 6) );
3093 rgba[i][aDst] = 1;
3094 }
3095 }
3096 break;
3097 case GL_UNSIGNED_SHORT_5_6_5:
3098 if (swapBytes) {
3099 const GLushort *ussrc = (const GLushort *) src;
3100 GLuint i;
3101 for (i = 0; i < n; i ++) {
3102 GLushort p = ussrc[i];
3103 SWAP2BYTE(p);
3104 rgba[i][rDst] = ((p >> 11) );
3105 rgba[i][gDst] = ((p >> 5) & 0x3f);
3106 rgba[i][bDst] = ((p ) & 0x1f);
3107 rgba[i][aDst] = 1;
3108 }
3109 }
3110 else {
3111 const GLushort *ussrc = (const GLushort *) src;
3112 GLuint i;
3113 for (i = 0; i < n; i ++) {
3114 GLushort p = ussrc[i];
3115 rgba[i][rDst] = ((p >> 11) );
3116 rgba[i][gDst] = ((p >> 5) & 0x3f);
3117 rgba[i][bDst] = ((p ) & 0x1f);
3118 rgba[i][aDst] = 1;
3119 }
3120 }
3121 break;
3122 case GL_UNSIGNED_SHORT_5_6_5_REV:
3123 if (swapBytes) {
3124 const GLushort *ussrc = (const GLushort *) src;
3125 GLuint i;
3126 for (i = 0; i < n; i ++) {
3127 GLushort p = ussrc[i];
3128 SWAP2BYTE(p);
3129 rgba[i][rDst] = ((p ) & 0x1f);
3130 rgba[i][gDst] = ((p >> 5) & 0x3f);
3131 rgba[i][bDst] = ((p >> 11) );
3132 rgba[i][aDst] = 1;
3133 }
3134 }
3135 else {
3136 const GLushort *ussrc = (const GLushort *) src;
3137 GLuint i;
3138 for (i = 0; i < n; i ++) {
3139 GLushort p = ussrc[i];
3140 rgba[i][rDst] = ((p ) & 0x1f);
3141 rgba[i][gDst] = ((p >> 5) & 0x3f);
3142 rgba[i][bDst] = ((p >> 11) );
3143 rgba[i][aDst] = 1;
3144 }
3145 }
3146 break;
3147 case GL_UNSIGNED_SHORT_4_4_4_4:
3148 if (swapBytes) {
3149 const GLushort *ussrc = (const GLushort *) src;
3150 GLuint i;
3151 for (i = 0; i < n; i ++) {
3152 GLushort p = ussrc[i];
3153 SWAP2BYTE(p);
3154 rgba[i][rDst] = ((p >> 12) );
3155 rgba[i][gDst] = ((p >> 8) & 0xf);
3156 rgba[i][bDst] = ((p >> 4) & 0xf);
3157 rgba[i][aDst] = ((p ) & 0xf);
3158 }
3159 }
3160 else {
3161 const GLushort *ussrc = (const GLushort *) src;
3162 GLuint i;
3163 for (i = 0; i < n; i ++) {
3164 GLushort p = ussrc[i];
3165 rgba[i][rDst] = ((p >> 12) );
3166 rgba[i][gDst] = ((p >> 8) & 0xf);
3167 rgba[i][bDst] = ((p >> 4) & 0xf);
3168 rgba[i][aDst] = ((p ) & 0xf);
3169 }
3170 }
3171 break;
3172 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
3173 if (swapBytes) {
3174 const GLushort *ussrc = (const GLushort *) src;
3175 GLuint i;
3176 for (i = 0; i < n; i ++) {
3177 GLushort p = ussrc[i];
3178 SWAP2BYTE(p);
3179 rgba[i][rDst] = ((p ) & 0xf);
3180 rgba[i][gDst] = ((p >> 4) & 0xf);
3181 rgba[i][bDst] = ((p >> 8) & 0xf);
3182 rgba[i][aDst] = ((p >> 12) );
3183 }
3184 }
3185 else {
3186 const GLushort *ussrc = (const GLushort *) src;
3187 GLuint i;
3188 for (i = 0; i < n; i ++) {
3189 GLushort p = ussrc[i];
3190 rgba[i][rDst] = ((p ) & 0xf);
3191 rgba[i][gDst] = ((p >> 4) & 0xf);
3192 rgba[i][bDst] = ((p >> 8) & 0xf);
3193 rgba[i][aDst] = ((p >> 12) );
3194 }
3195 }
3196 break;
3197 case GL_UNSIGNED_SHORT_5_5_5_1:
3198 if (swapBytes) {
3199 const GLushort *ussrc = (const GLushort *) src;
3200 GLuint i;
3201 for (i = 0; i < n; i ++) {
3202 GLushort p = ussrc[i];
3203 SWAP2BYTE(p);
3204 rgba[i][rDst] = ((p >> 11) );
3205 rgba[i][gDst] = ((p >> 6) & 0x1f);
3206 rgba[i][bDst] = ((p >> 1) & 0x1f);
3207 rgba[i][aDst] = ((p ) & 0x1 );
3208 }
3209 }
3210 else {
3211 const GLushort *ussrc = (const GLushort *) src;
3212 GLuint i;
3213 for (i = 0; i < n; i ++) {
3214 GLushort p = ussrc[i];
3215 rgba[i][rDst] = ((p >> 11) );
3216 rgba[i][gDst] = ((p >> 6) & 0x1f);
3217 rgba[i][bDst] = ((p >> 1) & 0x1f);
3218 rgba[i][aDst] = ((p ) & 0x1 );
3219 }
3220 }
3221 break;
3222 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
3223 if (swapBytes) {
3224 const GLushort *ussrc = (const GLushort *) src;
3225 GLuint i;
3226 for (i = 0; i < n; i ++) {
3227 GLushort p = ussrc[i];
3228 SWAP2BYTE(p);
3229 rgba[i][rDst] = ((p ) & 0x1f);
3230 rgba[i][gDst] = ((p >> 5) & 0x1f);
3231 rgba[i][bDst] = ((p >> 10) & 0x1f);
3232 rgba[i][aDst] = ((p >> 15) );
3233 }
3234 }
3235 else {
3236 const GLushort *ussrc = (const GLushort *) src;
3237 GLuint i;
3238 for (i = 0; i < n; i ++) {
3239 GLushort p = ussrc[i];
3240 rgba[i][rDst] = ((p ) & 0x1f);
3241 rgba[i][gDst] = ((p >> 5) & 0x1f);
3242 rgba[i][bDst] = ((p >> 10) & 0x1f);
3243 rgba[i][aDst] = ((p >> 15) );
3244 }
3245 }
3246 break;
3247 case GL_UNSIGNED_INT_8_8_8_8:
3248 if (swapBytes) {
3249 const GLuint *uisrc = (const GLuint *) src;
3250 GLuint i;
3251 for (i = 0; i < n; i ++) {
3252 GLuint p = uisrc[i];
3253 rgba[i][rDst] = ((p ) & 0xff);
3254 rgba[i][gDst] = ((p >> 8) & 0xff);
3255 rgba[i][bDst] = ((p >> 16) & 0xff);
3256 rgba[i][aDst] = ((p >> 24) );
3257 }
3258 }
3259 else {
3260 const GLuint *uisrc = (const GLuint *) src;
3261 GLuint i;
3262 for (i = 0; i < n; i ++) {
3263 GLuint p = uisrc[i];
3264 rgba[i][rDst] = ((p >> 24) );
3265 rgba[i][gDst] = ((p >> 16) & 0xff);
3266 rgba[i][bDst] = ((p >> 8) & 0xff);
3267 rgba[i][aDst] = ((p ) & 0xff);
3268 }
3269 }
3270 break;
3271 case GL_UNSIGNED_INT_8_8_8_8_REV:
3272 if (swapBytes) {
3273 const GLuint *uisrc = (const GLuint *) src;
3274 GLuint i;
3275 for (i = 0; i < n; i ++) {
3276 GLuint p = uisrc[i];
3277 rgba[i][rDst] = ((p >> 24) );
3278 rgba[i][gDst] = ((p >> 16) & 0xff);
3279 rgba[i][bDst] = ((p >> 8) & 0xff);
3280 rgba[i][aDst] = ((p ) & 0xff);
3281 }
3282 }
3283 else {
3284 const GLuint *uisrc = (const GLuint *) src;
3285 GLuint i;
3286 for (i = 0; i < n; i ++) {
3287 GLuint p = uisrc[i];
3288 rgba[i][rDst] = ((p ) & 0xff);
3289 rgba[i][gDst] = ((p >> 8) & 0xff);
3290 rgba[i][bDst] = ((p >> 16) & 0xff);
3291 rgba[i][aDst] = ((p >> 24) );
3292 }
3293 }
3294 break;
3295 case GL_UNSIGNED_INT_10_10_10_2:
3296 if (swapBytes) {
3297 const GLuint *uisrc = (const GLuint *) src;
3298 GLuint i;
3299 for (i = 0; i < n; i ++) {
3300 GLuint p = uisrc[i];
3301 SWAP4BYTE(p);
3302 rgba[i][rDst] = ((p >> 22) );
3303 rgba[i][gDst] = ((p >> 12) & 0x3ff);
3304 rgba[i][bDst] = ((p >> 2) & 0x3ff);
3305 rgba[i][aDst] = ((p ) & 0x3 );
3306 }
3307 }
3308 else {
3309 const GLuint *uisrc = (const GLuint *) src;
3310 GLuint i;
3311 for (i = 0; i < n; i ++) {
3312 GLuint p = uisrc[i];
3313 rgba[i][rDst] = ((p >> 22) );
3314 rgba[i][gDst] = ((p >> 12) & 0x3ff);
3315 rgba[i][bDst] = ((p >> 2) & 0x3ff);
3316 rgba[i][aDst] = ((p ) & 0x3 );
3317 }
3318 }
3319 break;
3320 case GL_UNSIGNED_INT_2_10_10_10_REV:
3321 if (swapBytes) {
3322 const GLuint *uisrc = (const GLuint *) src;
3323 GLuint i;
3324 for (i = 0; i < n; i ++) {
3325 GLuint p = uisrc[i];
3326 SWAP4BYTE(p);
3327 rgba[i][rDst] = ((p ) & 0x3ff);
3328 rgba[i][gDst] = ((p >> 10) & 0x3ff);
3329 rgba[i][bDst] = ((p >> 20) & 0x3ff);
3330 rgba[i][aDst] = ((p >> 30) );
3331 }
3332 }
3333 else {
3334 const GLuint *uisrc = (const GLuint *) src;
3335 GLuint i;
3336 for (i = 0; i < n; i ++) {
3337 GLuint p = uisrc[i];
3338 rgba[i][rDst] = ((p ) & 0x3ff);
3339 rgba[i][gDst] = ((p >> 10) & 0x3ff);
3340 rgba[i][bDst] = ((p >> 20) & 0x3ff);
3341 rgba[i][aDst] = ((p >> 30) );
3342 }
3343 }
3344 break;
3345 case GL_UNSIGNED_INT_5_9_9_9_REV:
3346 if (swapBytes) {
3347 const GLuint *uisrc = (const GLuint *) src;
3348 GLuint i;
3349 float f[3];
3350 for (i = 0; i < n; i ++) {
3351 GLuint p = uisrc[i];
3352 SWAP4BYTE(p);
3353 rgb9e5_to_float3(p, f);
3354 rgba[i][rDst] = clamp_float_to_uint(f[0]);
3355 rgba[i][gDst] = clamp_float_to_uint(f[1]);
3356 rgba[i][bDst] = clamp_float_to_uint(f[2]);
3357 rgba[i][aDst] = 1;
3358 }
3359 }
3360 else {
3361 const GLuint *uisrc = (const GLuint *) src;
3362 GLuint i;
3363 float f[3];
3364 for (i = 0; i < n; i ++) {
3365 GLuint p = uisrc[i];
3366 rgb9e5_to_float3(p, f);
3367 rgba[i][rDst] = clamp_float_to_uint(f[0]);
3368 rgba[i][gDst] = clamp_float_to_uint(f[1]);
3369 rgba[i][bDst] = clamp_float_to_uint(f[2]);
3370 rgba[i][aDst] = 1;
3371 }
3372 }
3373 break;
3374 case GL_UNSIGNED_INT_10F_11F_11F_REV:
3375 if (swapBytes) {
3376 const GLuint *uisrc = (const GLuint *) src;
3377 GLuint i;
3378 float f[3];
3379 for (i = 0; i < n; i ++) {
3380 GLuint p = uisrc[i];
3381 SWAP4BYTE(p);
3382 r11g11b10f_to_float3(p, f);
3383 rgba[i][rDst] = clamp_float_to_uint(f[0]);
3384 rgba[i][gDst] = clamp_float_to_uint(f[1]);
3385 rgba[i][bDst] = clamp_float_to_uint(f[2]);
3386 rgba[i][aDst] = 1;
3387 }
3388 }
3389 else {
3390 const GLuint *uisrc = (const GLuint *) src;
3391 GLuint i;
3392 float f[3];
3393 for (i = 0; i < n; i ++) {
3394 GLuint p = uisrc[i];
3395 r11g11b10f_to_float3(p, f);
3396 rgba[i][rDst] = clamp_float_to_uint(f[0]);
3397 rgba[i][gDst] = clamp_float_to_uint(f[1]);
3398 rgba[i][bDst] = clamp_float_to_uint(f[2]);
3399 rgba[i][aDst] = 1;
3400 }
3401 }
3402 break;
3403 default:
3404 _mesa_problem(NULL, "bad srcType in extract uint data");
3405 break;
3406 }
3407 #undef PROCESS
3408 }
3409
3410
3411
3412 /*
3413 * Unpack a row of color image data from a client buffer according to
3414 * the pixel unpacking parameters.
3415 * Return GLchan values in the specified dest image format.
3416 * This is used by glDrawPixels and glTexImage?D().
3417 * \param ctx - the context
3418 * n - number of pixels in the span
3419 * dstFormat - format of destination color array
3420 * dest - the destination color array
3421 * srcFormat - source image format
3422 * srcType - source image data type
3423 * source - source image pointer
3424 * srcPacking - pixel unpacking parameters
3425 * transferOps - bitmask of IMAGE_*_BIT values of operations to apply
3426 *
3427 * XXX perhaps expand this to process whole images someday.
3428 */
3429 void
3430 _mesa_unpack_color_span_chan( struct gl_context *ctx,
3431 GLuint n, GLenum dstFormat, GLchan dest[],
3432 GLenum srcFormat, GLenum srcType,
3433 const GLvoid *source,
3434 const struct gl_pixelstore_attrib *srcPacking,
3435 GLbitfield transferOps )
3436 {
3437 ASSERT(dstFormat == GL_ALPHA ||
3438 dstFormat == GL_LUMINANCE ||
3439 dstFormat == GL_LUMINANCE_ALPHA ||
3440 dstFormat == GL_INTENSITY ||
3441 dstFormat == GL_RED ||
3442 dstFormat == GL_RG ||
3443 dstFormat == GL_RGB ||
3444 dstFormat == GL_RGBA ||
3445 dstFormat == GL_COLOR_INDEX);
3446
3447 ASSERT(srcFormat == GL_RED ||
3448 srcFormat == GL_GREEN ||
3449 srcFormat == GL_BLUE ||
3450 srcFormat == GL_ALPHA ||
3451 srcFormat == GL_LUMINANCE ||
3452 srcFormat == GL_LUMINANCE_ALPHA ||
3453 srcFormat == GL_INTENSITY ||
3454 srcFormat == GL_RG ||
3455 srcFormat == GL_RGB ||
3456 srcFormat == GL_BGR ||
3457 srcFormat == GL_RGBA ||
3458 srcFormat == GL_BGRA ||
3459 srcFormat == GL_ABGR_EXT ||
3460 srcFormat == GL_COLOR_INDEX);
3461
3462 ASSERT(srcType == GL_BITMAP ||
3463 srcType == GL_UNSIGNED_BYTE ||
3464 srcType == GL_BYTE ||
3465 srcType == GL_UNSIGNED_SHORT ||
3466 srcType == GL_SHORT ||
3467 srcType == GL_UNSIGNED_INT ||
3468 srcType == GL_INT ||
3469 srcType == GL_HALF_FLOAT_ARB ||
3470 srcType == GL_FLOAT ||
3471 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
3472 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
3473 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
3474 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
3475 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
3476 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
3477 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
3478 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
3479 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
3480 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
3481 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
3482 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
3483 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
3484 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
3485
3486 /* Try simple cases first */
3487 if (transferOps == 0) {
3488 if (srcType == CHAN_TYPE) {
3489 if (dstFormat == GL_RGBA) {
3490 if (srcFormat == GL_RGBA) {
3491 memcpy( dest, source, n * 4 * sizeof(GLchan) );
3492 return;
3493 }
3494 else if (srcFormat == GL_RGB) {
3495 GLuint i;
3496 const GLchan *src = (const GLchan *) source;
3497 GLchan *dst = dest;
3498 for (i = 0; i < n; i++) {
3499 dst[0] = src[0];
3500 dst[1] = src[1];
3501 dst[2] = src[2];
3502 dst[3] = CHAN_MAX;
3503 src += 3;
3504 dst += 4;
3505 }
3506 return;
3507 }
3508 }
3509 else if (dstFormat == GL_RGB) {
3510 if (srcFormat == GL_RGB) {
3511 memcpy( dest, source, n * 3 * sizeof(GLchan) );
3512 return;
3513 }
3514 else if (srcFormat == GL_RGBA) {
3515 GLuint i;
3516 const GLchan *src = (const GLchan *) source;
3517 GLchan *dst = dest;
3518 for (i = 0; i < n; i++) {
3519 dst[0] = src[0];
3520 dst[1] = src[1];
3521 dst[2] = src[2];
3522 src += 4;
3523 dst += 3;
3524 }
3525 return;
3526 }
3527 }
3528 else if (dstFormat == srcFormat) {
3529 GLint comps = _mesa_components_in_format(srcFormat);
3530 assert(comps > 0);
3531 memcpy( dest, source, n * comps * sizeof(GLchan) );
3532 return;
3533 }
3534 }
3535 /*
3536 * Common situation, loading 8bit RGBA/RGB source images
3537 * into 16/32 bit destination. (OSMesa16/32)
3538 */
3539 else if (srcType == GL_UNSIGNED_BYTE) {
3540 if (dstFormat == GL_RGBA) {
3541 if (srcFormat == GL_RGB) {
3542 GLuint i;
3543 const GLubyte *src = (const GLubyte *) source;
3544 GLchan *dst = dest;
3545 for (i = 0; i < n; i++) {
3546 dst[0] = UBYTE_TO_CHAN(src[0]);
3547 dst[1] = UBYTE_TO_CHAN(src[1]);
3548 dst[2] = UBYTE_TO_CHAN(src[2]);
3549 dst[3] = CHAN_MAX;
3550 src += 3;
3551 dst += 4;
3552 }
3553 return;
3554 }
3555 else if (srcFormat == GL_RGBA) {
3556 GLuint i;
3557 const GLubyte *src = (const GLubyte *) source;
3558 GLchan *dst = dest;
3559 for (i = 0; i < n; i++) {
3560 dst[0] = UBYTE_TO_CHAN(src[0]);
3561 dst[1] = UBYTE_TO_CHAN(src[1]);
3562 dst[2] = UBYTE_TO_CHAN(src[2]);
3563 dst[3] = UBYTE_TO_CHAN(src[3]);
3564 src += 4;
3565 dst += 4;
3566 }
3567 return;
3568 }
3569 }
3570 else if (dstFormat == GL_RGB) {
3571 if (srcFormat == GL_RGB) {
3572 GLuint i;
3573 const GLubyte *src = (const GLubyte *) source;
3574 GLchan *dst = dest;
3575 for (i = 0; i < n; i++) {
3576 dst[0] = UBYTE_TO_CHAN(src[0]);
3577 dst[1] = UBYTE_TO_CHAN(src[1]);
3578 dst[2] = UBYTE_TO_CHAN(src[2]);
3579 src += 3;
3580 dst += 3;
3581 }
3582 return;
3583 }
3584 else if (srcFormat == GL_RGBA) {
3585 GLuint i;
3586 const GLubyte *src = (const GLubyte *) source;
3587 GLchan *dst = dest;
3588 for (i = 0; i < n; i++) {
3589 dst[0] = UBYTE_TO_CHAN(src[0]);
3590 dst[1] = UBYTE_TO_CHAN(src[1]);
3591 dst[2] = UBYTE_TO_CHAN(src[2]);
3592 src += 4;
3593 dst += 3;
3594 }
3595 return;
3596 }
3597 }
3598 }
3599 }
3600
3601
3602 /* general solution begins here */
3603 {
3604 GLint dstComponents;
3605 GLint rDst, gDst, bDst, aDst, lDst, iDst;
3606 GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * n * sizeof(GLfloat));
3607
3608 if (!rgba) {
3609 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3610 return;
3611 }
3612
3613 dstComponents = _mesa_components_in_format( dstFormat );
3614 /* source & dest image formats should have been error checked by now */
3615 assert(dstComponents > 0);
3616
3617 /*
3618 * Extract image data and convert to RGBA floats
3619 */
3620 if (srcFormat == GL_COLOR_INDEX) {
3621 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
3622
3623 if (!indexes) {
3624 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3625 return;
3626 }
3627
3628 extract_uint_indexes(n, indexes, srcFormat, srcType, source,
3629 srcPacking);
3630
3631 if (dstFormat == GL_COLOR_INDEX) {
3632 GLuint i;
3633 _mesa_apply_ci_transfer_ops(ctx, transferOps, n, indexes);
3634 /* convert to GLchan and return */
3635 for (i = 0; i < n; i++) {
3636 dest[i] = (GLchan) (indexes[i] & 0xff);
3637 }
3638 free(indexes);
3639 free(rgba);
3640 return;
3641 }
3642 else {
3643 /* Convert indexes to RGBA */
3644 if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
3645 _mesa_shift_and_offset_ci(ctx, n, indexes);
3646 }
3647 _mesa_map_ci_to_rgba(ctx, n, indexes, rgba);
3648 }
3649
3650 /* Don't do RGBA scale/bias or RGBA->RGBA mapping if starting
3651 * with color indexes.
3652 */
3653 transferOps &= ~(IMAGE_SCALE_BIAS_BIT | IMAGE_MAP_COLOR_BIT);
3654
3655 free(indexes);
3656 }
3657 else {
3658 /* non-color index data */
3659 extract_float_rgba(n, rgba, srcFormat, srcType, source,
3660 srcPacking->SwapBytes);
3661 }
3662
3663 /* Need to clamp if returning GLubytes or GLushorts */
3664 #if CHAN_TYPE != GL_FLOAT
3665 transferOps |= IMAGE_CLAMP_BIT;
3666 #endif
3667
3668 if (transferOps) {
3669 _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba);
3670 }
3671
3672 get_component_indexes(dstFormat,
3673 &rDst, &gDst, &bDst, &aDst, &lDst, &iDst);
3674
3675 /* Now return the GLchan data in the requested dstFormat */
3676 if (rDst >= 0) {
3677 GLchan *dst = dest;
3678 GLuint i;
3679 for (i = 0; i < n; i++) {
3680 CLAMPED_FLOAT_TO_CHAN(dst[rDst], rgba[i][RCOMP]);
3681 dst += dstComponents;
3682 }
3683 }
3684
3685 if (gDst >= 0) {
3686 GLchan *dst = dest;
3687 GLuint i;
3688 for (i = 0; i < n; i++) {
3689 CLAMPED_FLOAT_TO_CHAN(dst[gDst], rgba[i][GCOMP]);
3690 dst += dstComponents;
3691 }
3692 }
3693
3694 if (bDst >= 0) {
3695 GLchan *dst = dest;
3696 GLuint i;
3697 for (i = 0; i < n; i++) {
3698 CLAMPED_FLOAT_TO_CHAN(dst[bDst], rgba[i][BCOMP]);
3699 dst += dstComponents;
3700 }
3701 }
3702
3703 if (aDst >= 0) {
3704 GLchan *dst = dest;
3705 GLuint i;
3706 for (i = 0; i < n; i++) {
3707 CLAMPED_FLOAT_TO_CHAN(dst[aDst], rgba[i][ACOMP]);
3708 dst += dstComponents;
3709 }
3710 }
3711
3712 if (iDst >= 0) {
3713 GLchan *dst = dest;
3714 GLuint i;
3715 assert(iDst == 0);
3716 assert(dstComponents == 1);
3717 for (i = 0; i < n; i++) {
3718 /* Intensity comes from red channel */
3719 CLAMPED_FLOAT_TO_CHAN(dst[i], rgba[i][RCOMP]);
3720 }
3721 }
3722
3723 if (lDst >= 0) {
3724 GLchan *dst = dest;
3725 GLuint i;
3726 assert(lDst == 0);
3727 for (i = 0; i < n; i++) {
3728 /* Luminance comes from red channel */
3729 CLAMPED_FLOAT_TO_CHAN(dst[0], rgba[i][RCOMP]);
3730 dst += dstComponents;
3731 }
3732 }
3733
3734 free(rgba);
3735 }
3736 }
3737
3738
3739 /**
3740 * Same as _mesa_unpack_color_span_chan(), but return GLfloat data
3741 * instead of GLchan.
3742 */
3743 void
3744 _mesa_unpack_color_span_float( struct gl_context *ctx,
3745 GLuint n, GLenum dstFormat, GLfloat dest[],
3746 GLenum srcFormat, GLenum srcType,
3747 const GLvoid *source,
3748 const struct gl_pixelstore_attrib *srcPacking,
3749 GLbitfield transferOps )
3750 {
3751 ASSERT(dstFormat == GL_ALPHA ||
3752 dstFormat == GL_LUMINANCE ||
3753 dstFormat == GL_LUMINANCE_ALPHA ||
3754 dstFormat == GL_INTENSITY ||
3755 dstFormat == GL_RED ||
3756 dstFormat == GL_RG ||
3757 dstFormat == GL_RGB ||
3758 dstFormat == GL_RGBA ||
3759 dstFormat == GL_COLOR_INDEX);
3760
3761 ASSERT(srcFormat == GL_RED ||
3762 srcFormat == GL_GREEN ||
3763 srcFormat == GL_BLUE ||
3764 srcFormat == GL_ALPHA ||
3765 srcFormat == GL_LUMINANCE ||
3766 srcFormat == GL_LUMINANCE_ALPHA ||
3767 srcFormat == GL_INTENSITY ||
3768 srcFormat == GL_RG ||
3769 srcFormat == GL_RGB ||
3770 srcFormat == GL_BGR ||
3771 srcFormat == GL_RGBA ||
3772 srcFormat == GL_BGRA ||
3773 srcFormat == GL_ABGR_EXT ||
3774 srcFormat == GL_RED_INTEGER_EXT ||
3775 srcFormat == GL_GREEN_INTEGER_EXT ||
3776 srcFormat == GL_BLUE_INTEGER_EXT ||
3777 srcFormat == GL_ALPHA_INTEGER_EXT ||
3778 srcFormat == GL_RGB_INTEGER_EXT ||
3779 srcFormat == GL_RGBA_INTEGER_EXT ||
3780 srcFormat == GL_BGR_INTEGER_EXT ||
3781 srcFormat == GL_BGRA_INTEGER_EXT ||
3782 srcFormat == GL_LUMINANCE_INTEGER_EXT ||
3783 srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT ||
3784 srcFormat == GL_COLOR_INDEX);
3785
3786 ASSERT(srcType == GL_BITMAP ||
3787 srcType == GL_UNSIGNED_BYTE ||
3788 srcType == GL_BYTE ||
3789 srcType == GL_UNSIGNED_SHORT ||
3790 srcType == GL_SHORT ||
3791 srcType == GL_UNSIGNED_INT ||
3792 srcType == GL_INT ||
3793 srcType == GL_HALF_FLOAT_ARB ||
3794 srcType == GL_FLOAT ||
3795 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
3796 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
3797 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
3798 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
3799 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
3800 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
3801 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
3802 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
3803 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
3804 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
3805 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
3806 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
3807 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
3808 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
3809
3810 /* general solution, no special cases, yet */
3811 {
3812 GLint dstComponents;
3813 GLint rDst, gDst, bDst, aDst, lDst, iDst;
3814 GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * n * sizeof(GLfloat));
3815
3816 if (!rgba) {
3817 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3818 return;
3819 }
3820
3821 dstComponents = _mesa_components_in_format( dstFormat );
3822 /* source & dest image formats should have been error checked by now */
3823 assert(dstComponents > 0);
3824
3825 /*
3826 * Extract image data and convert to RGBA floats
3827 */
3828 if (srcFormat == GL_COLOR_INDEX) {
3829 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
3830
3831 if (!indexes) {
3832 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3833 free(rgba);
3834 return;
3835 }
3836
3837 extract_uint_indexes(n, indexes, srcFormat, srcType, source,
3838 srcPacking);
3839
3840 if (dstFormat == GL_COLOR_INDEX) {
3841 GLuint i;
3842 _mesa_apply_ci_transfer_ops(ctx, transferOps, n, indexes);
3843 /* convert to GLchan and return */
3844 for (i = 0; i < n; i++) {
3845 dest[i] = (GLchan) (indexes[i] & 0xff);
3846 }
3847 free(indexes);
3848 free(rgba);
3849 return;
3850 }
3851 else {
3852 /* Convert indexes to RGBA */
3853 if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
3854 _mesa_shift_and_offset_ci(ctx, n, indexes);
3855 }
3856 _mesa_map_ci_to_rgba(ctx, n, indexes, rgba);
3857 }
3858
3859 /* Don't do RGBA scale/bias or RGBA->RGBA mapping if starting
3860 * with color indexes.
3861 */
3862 transferOps &= ~(IMAGE_SCALE_BIAS_BIT | IMAGE_MAP_COLOR_BIT);
3863
3864 free(indexes);
3865 }
3866 else {
3867 /* non-color index data */
3868 extract_float_rgba(n, rgba, srcFormat, srcType, source,
3869 srcPacking->SwapBytes);
3870 }
3871
3872 if (transferOps) {
3873 _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba);
3874 }
3875
3876 get_component_indexes(dstFormat,
3877 &rDst, &gDst, &bDst, &aDst, &lDst, &iDst);
3878
3879 /* Now pack results in the requested dstFormat */
3880 if (rDst >= 0) {
3881 GLfloat *dst = dest;
3882 GLuint i;
3883 for (i = 0; i < n; i++) {
3884 dst[rDst] = rgba[i][RCOMP];
3885 dst += dstComponents;
3886 }
3887 }
3888
3889 if (gDst >= 0) {
3890 GLfloat *dst = dest;
3891 GLuint i;
3892 for (i = 0; i < n; i++) {
3893 dst[gDst] = rgba[i][GCOMP];
3894 dst += dstComponents;
3895 }
3896 }
3897
3898 if (bDst >= 0) {
3899 GLfloat *dst = dest;
3900 GLuint i;
3901 for (i = 0; i < n; i++) {
3902 dst[bDst] = rgba[i][BCOMP];
3903 dst += dstComponents;
3904 }
3905 }
3906
3907 if (aDst >= 0) {
3908 GLfloat *dst = dest;
3909 GLuint i;
3910 for (i = 0; i < n; i++) {
3911 dst[aDst] = rgba[i][ACOMP];
3912 dst += dstComponents;
3913 }
3914 }
3915
3916 if (iDst >= 0) {
3917 GLfloat *dst = dest;
3918 GLuint i;
3919 assert(iDst == 0);
3920 assert(dstComponents == 1);
3921 for (i = 0; i < n; i++) {
3922 /* Intensity comes from red channel */
3923 dst[i] = rgba[i][RCOMP];
3924 }
3925 }
3926
3927 if (lDst >= 0) {
3928 GLfloat *dst = dest;
3929 GLuint i;
3930 assert(lDst == 0);
3931 for (i = 0; i < n; i++) {
3932 /* Luminance comes from red channel */
3933 dst[0] = rgba[i][RCOMP];
3934 dst += dstComponents;
3935 }
3936 }
3937
3938 free(rgba);
3939 }
3940 }
3941
3942
3943 /**
3944 * Same as _mesa_unpack_color_span_chan(), but return GLuint data
3945 * instead of GLchan.
3946 * No pixel transfer ops are applied.
3947 */
3948 void
3949 _mesa_unpack_color_span_uint(struct gl_context *ctx,
3950 GLuint n, GLenum dstFormat, GLuint *dest,
3951 GLenum srcFormat, GLenum srcType,
3952 const GLvoid *source,
3953 const struct gl_pixelstore_attrib *srcPacking)
3954 {
3955 GLuint (*rgba)[4] = (GLuint (*)[4]) malloc(n * 4 * sizeof(GLfloat));
3956
3957 if (!rgba) {
3958 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
3959 return;
3960 }
3961
3962 ASSERT(dstFormat == GL_ALPHA ||
3963 dstFormat == GL_LUMINANCE ||
3964 dstFormat == GL_LUMINANCE_ALPHA ||
3965 dstFormat == GL_INTENSITY ||
3966 dstFormat == GL_RED ||
3967 dstFormat == GL_RG ||
3968 dstFormat == GL_RGB ||
3969 dstFormat == GL_RGBA);
3970
3971 ASSERT(srcFormat == GL_RED ||
3972 srcFormat == GL_GREEN ||
3973 srcFormat == GL_BLUE ||
3974 srcFormat == GL_ALPHA ||
3975 srcFormat == GL_LUMINANCE ||
3976 srcFormat == GL_LUMINANCE_ALPHA ||
3977 srcFormat == GL_INTENSITY ||
3978 srcFormat == GL_RG ||
3979 srcFormat == GL_RGB ||
3980 srcFormat == GL_BGR ||
3981 srcFormat == GL_RGBA ||
3982 srcFormat == GL_BGRA ||
3983 srcFormat == GL_ABGR_EXT ||
3984 srcFormat == GL_RED_INTEGER_EXT ||
3985 srcFormat == GL_GREEN_INTEGER_EXT ||
3986 srcFormat == GL_BLUE_INTEGER_EXT ||
3987 srcFormat == GL_ALPHA_INTEGER_EXT ||
3988 srcFormat == GL_RGB_INTEGER_EXT ||
3989 srcFormat == GL_RGBA_INTEGER_EXT ||
3990 srcFormat == GL_BGR_INTEGER_EXT ||
3991 srcFormat == GL_BGRA_INTEGER_EXT ||
3992 srcFormat == GL_LUMINANCE_INTEGER_EXT ||
3993 srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT);
3994
3995 ASSERT(srcType == GL_UNSIGNED_BYTE ||
3996 srcType == GL_BYTE ||
3997 srcType == GL_UNSIGNED_SHORT ||
3998 srcType == GL_SHORT ||
3999 srcType == GL_UNSIGNED_INT ||
4000 srcType == GL_INT ||
4001 srcType == GL_HALF_FLOAT_ARB ||
4002 srcType == GL_FLOAT ||
4003 srcType == GL_UNSIGNED_BYTE_3_3_2 ||
4004 srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
4005 srcType == GL_UNSIGNED_SHORT_5_6_5 ||
4006 srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
4007 srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
4008 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
4009 srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
4010 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
4011 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
4012 srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
4013 srcType == GL_UNSIGNED_INT_10_10_10_2 ||
4014 srcType == GL_UNSIGNED_INT_2_10_10_10_REV ||
4015 srcType == GL_UNSIGNED_INT_5_9_9_9_REV ||
4016 srcType == GL_UNSIGNED_INT_10F_11F_11F_REV);
4017
4018
4019 /* Extract image data as uint[4] pixels */
4020 extract_uint_rgba(n, rgba, srcFormat, srcType, source,
4021 srcPacking->SwapBytes);
4022
4023 if (dstFormat == GL_RGBA) {
4024 /* simple case */
4025 memcpy(dest, rgba, 4 * sizeof(GLuint) * n);
4026 }
4027 else {
4028 /* general case */
4029 GLint rDst, gDst, bDst, aDst, lDst, iDst;
4030 GLint dstComponents = _mesa_components_in_format( dstFormat );
4031
4032 assert(dstComponents > 0);
4033
4034 get_component_indexes(dstFormat,
4035 &rDst, &gDst, &bDst, &aDst, &lDst, &iDst);
4036
4037 /* Now pack values in the requested dest format */
4038 if (rDst >= 0) {
4039 GLuint *dst = dest;
4040 GLuint i;
4041 for (i = 0; i < n; i++) {
4042 dst[rDst] = rgba[i][RCOMP];
4043 dst += dstComponents;
4044 }
4045 }
4046
4047 if (gDst >= 0) {
4048 GLuint *dst = dest;
4049 GLuint i;
4050 for (i = 0; i < n; i++) {
4051 dst[gDst] = rgba[i][GCOMP];
4052 dst += dstComponents;
4053 }
4054 }
4055
4056 if (bDst >= 0) {
4057 GLuint *dst = dest;
4058 GLuint i;
4059 for (i = 0; i < n; i++) {
4060 dst[bDst] = rgba[i][BCOMP];
4061 dst += dstComponents;
4062 }
4063 }
4064
4065 if (aDst >= 0) {
4066 GLuint *dst = dest;
4067 GLuint i;
4068 for (i = 0; i < n; i++) {
4069 dst[aDst] = rgba[i][ACOMP];
4070 dst += dstComponents;
4071 }
4072 }
4073
4074 if (iDst >= 0) {
4075 GLuint *dst = dest;
4076 GLuint i;
4077 assert(iDst == 0);
4078 assert(dstComponents == 1);
4079 for (i = 0; i < n; i++) {
4080 /* Intensity comes from red channel */
4081 dst[i] = rgba[i][RCOMP];
4082 }
4083 }
4084
4085 if (lDst >= 0) {
4086 GLuint *dst = dest;
4087 GLuint i;
4088 assert(lDst == 0);
4089 for (i = 0; i < n; i++) {
4090 /* Luminance comes from red channel */
4091 dst[0] = rgba[i][RCOMP];
4092 dst += dstComponents;
4093 }
4094 }
4095 }
4096
4097 free(rgba);
4098 }
4099
4100
4101
4102 /**
4103 * Similar to _mesa_unpack_color_span_float(), but for dudv data instead of rgba,
4104 * directly return GLbyte data, no transfer ops apply.
4105 */
4106 void
4107 _mesa_unpack_dudv_span_byte( struct gl_context *ctx,
4108 GLuint n, GLenum dstFormat, GLbyte dest[],
4109 GLenum srcFormat, GLenum srcType,
4110 const GLvoid *source,
4111 const struct gl_pixelstore_attrib *srcPacking,
4112 GLbitfield transferOps )
4113 {
4114 ASSERT(dstFormat == GL_DUDV_ATI);
4115 ASSERT(srcFormat == GL_DUDV_ATI ||
4116 srcFormat == GL_DU8DV8_ATI);
4117
4118 ASSERT(srcType == GL_UNSIGNED_BYTE ||
4119 srcType == GL_BYTE ||
4120 srcType == GL_UNSIGNED_SHORT ||
4121 srcType == GL_SHORT ||
4122 srcType == GL_UNSIGNED_INT ||
4123 srcType == GL_INT ||
4124 srcType == GL_HALF_FLOAT_ARB ||
4125 srcType == GL_FLOAT);
4126
4127 /* general solution */
4128 {
4129 GLint dstComponents;
4130 GLbyte *dst = dest;
4131 GLuint i;
4132 GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * n * sizeof(GLfloat));
4133
4134 if (!rgba) {
4135 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
4136 return;
4137 }
4138
4139 dstComponents = _mesa_components_in_format( dstFormat );
4140 /* source & dest image formats should have been error checked by now */
4141 assert(dstComponents > 0);
4142
4143 /*
4144 * Extract image data and convert to RGBA floats
4145 */
4146 extract_float_rgba(n, rgba, srcFormat, srcType, source,
4147 srcPacking->SwapBytes);
4148
4149
4150 /* Now determine which color channels we need to produce.
4151 * And determine the dest index (offset) within each color tuple.
4152 */
4153
4154 /* Now pack results in the requested dstFormat */
4155 for (i = 0; i < n; i++) {
4156 /* not sure - need clamp[-1,1] here? */
4157 dst[0] = FLOAT_TO_BYTE(rgba[i][RCOMP]);
4158 dst[1] = FLOAT_TO_BYTE(rgba[i][GCOMP]);
4159 dst += dstComponents;
4160 }
4161
4162 free(rgba);
4163 }
4164 }
4165
4166 /*
4167 * Unpack a row of color index data from a client buffer according to
4168 * the pixel unpacking parameters.
4169 * This is (or will be) used by glDrawPixels, glTexImage[123]D, etc.
4170 *
4171 * Args: ctx - the context
4172 * n - number of pixels
4173 * dstType - destination data type
4174 * dest - destination array
4175 * srcType - source pixel type
4176 * source - source data pointer
4177 * srcPacking - pixel unpacking parameters
4178 * transferOps - the pixel transfer operations to apply
4179 */
4180 void
4181 _mesa_unpack_index_span( struct gl_context *ctx, GLuint n,
4182 GLenum dstType, GLvoid *dest,
4183 GLenum srcType, const GLvoid *source,
4184 const struct gl_pixelstore_attrib *srcPacking,
4185 GLbitfield transferOps )
4186 {
4187 ASSERT(srcType == GL_BITMAP ||
4188 srcType == GL_UNSIGNED_BYTE ||
4189 srcType == GL_BYTE ||
4190 srcType == GL_UNSIGNED_SHORT ||
4191 srcType == GL_SHORT ||
4192 srcType == GL_UNSIGNED_INT ||
4193 srcType == GL_INT ||
4194 srcType == GL_HALF_FLOAT_ARB ||
4195 srcType == GL_FLOAT);
4196
4197 ASSERT(dstType == GL_UNSIGNED_BYTE ||
4198 dstType == GL_UNSIGNED_SHORT ||
4199 dstType == GL_UNSIGNED_INT);
4200
4201
4202 transferOps &= (IMAGE_MAP_COLOR_BIT | IMAGE_SHIFT_OFFSET_BIT);
4203
4204 /*
4205 * Try simple cases first
4206 */
4207 if (transferOps == 0 && srcType == GL_UNSIGNED_BYTE
4208 && dstType == GL_UNSIGNED_BYTE) {
4209 memcpy(dest, source, n * sizeof(GLubyte));
4210 }
4211 else if (transferOps == 0 && srcType == GL_UNSIGNED_INT
4212 && dstType == GL_UNSIGNED_INT && !srcPacking->SwapBytes) {
4213 memcpy(dest, source, n * sizeof(GLuint));
4214 }
4215 else {
4216 /*
4217 * general solution
4218 */
4219 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
4220
4221 if (!indexes) {
4222 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
4223 return;
4224 }
4225
4226 extract_uint_indexes(n, indexes, GL_COLOR_INDEX, srcType, source,
4227 srcPacking);
4228
4229 if (transferOps)
4230 _mesa_apply_ci_transfer_ops(ctx, transferOps, n, indexes);
4231
4232 /* convert to dest type */
4233 switch (dstType) {
4234 case GL_UNSIGNED_BYTE:
4235 {
4236 GLubyte *dst = (GLubyte *) dest;
4237 GLuint i;
4238 for (i = 0; i < n; i++) {
4239 dst[i] = (GLubyte) (indexes[i] & 0xff);
4240 }
4241 }
4242 break;
4243 case GL_UNSIGNED_SHORT:
4244 {
4245 GLuint *dst = (GLuint *) dest;
4246 GLuint i;
4247 for (i = 0; i < n; i++) {
4248 dst[i] = (GLushort) (indexes[i] & 0xffff);
4249 }
4250 }
4251 break;
4252 case GL_UNSIGNED_INT:
4253 memcpy(dest, indexes, n * sizeof(GLuint));
4254 break;
4255 default:
4256 _mesa_problem(ctx, "bad dstType in _mesa_unpack_index_span");
4257 }
4258
4259 free(indexes);
4260 }
4261 }
4262
4263
4264 void
4265 _mesa_pack_index_span( struct gl_context *ctx, GLuint n,
4266 GLenum dstType, GLvoid *dest, const GLuint *source,
4267 const struct gl_pixelstore_attrib *dstPacking,
4268 GLbitfield transferOps )
4269 {
4270 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
4271
4272 if (!indexes) {
4273 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel packing");
4274 return;
4275 }
4276
4277 transferOps &= (IMAGE_MAP_COLOR_BIT | IMAGE_SHIFT_OFFSET_BIT);
4278
4279 if (transferOps & (IMAGE_MAP_COLOR_BIT | IMAGE_SHIFT_OFFSET_BIT)) {
4280 /* make a copy of input */
4281 memcpy(indexes, source, n * sizeof(GLuint));
4282 _mesa_apply_ci_transfer_ops(ctx, transferOps, n, indexes);
4283 source = indexes;
4284 }
4285
4286 switch (dstType) {
4287 case GL_UNSIGNED_BYTE:
4288 {
4289 GLubyte *dst = (GLubyte *) dest;
4290 GLuint i;
4291 for (i = 0; i < n; i++) {
4292 *dst++ = (GLubyte) source[i];
4293 }
4294 }
4295 break;
4296 case GL_BYTE:
4297 {
4298 GLbyte *dst = (GLbyte *) dest;
4299 GLuint i;
4300 for (i = 0; i < n; i++) {
4301 dst[i] = (GLbyte) source[i];
4302 }
4303 }
4304 break;
4305 case GL_UNSIGNED_SHORT:
4306 {
4307 GLushort *dst = (GLushort *) dest;
4308 GLuint i;
4309 for (i = 0; i < n; i++) {
4310 dst[i] = (GLushort) source[i];
4311 }
4312 if (dstPacking->SwapBytes) {
4313 _mesa_swap2( (GLushort *) dst, n );
4314 }
4315 }
4316 break;
4317 case GL_SHORT:
4318 {
4319 GLshort *dst = (GLshort *) dest;
4320 GLuint i;
4321 for (i = 0; i < n; i++) {
4322 dst[i] = (GLshort) source[i];
4323 }
4324 if (dstPacking->SwapBytes) {
4325 _mesa_swap2( (GLushort *) dst, n );
4326 }
4327 }
4328 break;
4329 case GL_UNSIGNED_INT:
4330 {
4331 GLuint *dst = (GLuint *) dest;
4332 GLuint i;
4333 for (i = 0; i < n; i++) {
4334 dst[i] = (GLuint) source[i];
4335 }
4336 if (dstPacking->SwapBytes) {
4337 _mesa_swap4( (GLuint *) dst, n );
4338 }
4339 }
4340 break;
4341 case GL_INT:
4342 {
4343 GLint *dst = (GLint *) dest;
4344 GLuint i;
4345 for (i = 0; i < n; i++) {
4346 dst[i] = (GLint) source[i];
4347 }
4348 if (dstPacking->SwapBytes) {
4349 _mesa_swap4( (GLuint *) dst, n );
4350 }
4351 }
4352 break;
4353 case GL_FLOAT:
4354 {
4355 GLfloat *dst = (GLfloat *) dest;
4356 GLuint i;
4357 for (i = 0; i < n; i++) {
4358 dst[i] = (GLfloat) source[i];
4359 }
4360 if (dstPacking->SwapBytes) {
4361 _mesa_swap4( (GLuint *) dst, n );
4362 }
4363 }
4364 break;
4365 case GL_HALF_FLOAT_ARB:
4366 {
4367 GLhalfARB *dst = (GLhalfARB *) dest;
4368 GLuint i;
4369 for (i = 0; i < n; i++) {
4370 dst[i] = _mesa_float_to_half((GLfloat) source[i]);
4371 }
4372 if (dstPacking->SwapBytes) {
4373 _mesa_swap2( (GLushort *) dst, n );
4374 }
4375 }
4376 break;
4377 default:
4378 _mesa_problem(ctx, "bad type in _mesa_pack_index_span");
4379 }
4380
4381 free(indexes);
4382 }
4383
4384
4385 /*
4386 * Unpack a row of stencil data from a client buffer according to
4387 * the pixel unpacking parameters.
4388 * This is (or will be) used by glDrawPixels
4389 *
4390 * Args: ctx - the context
4391 * n - number of pixels
4392 * dstType - destination data type
4393 * dest - destination array
4394 * srcType - source pixel type
4395 * source - source data pointer
4396 * srcPacking - pixel unpacking parameters
4397 * transferOps - apply offset/bias/lookup ops?
4398 */
4399 void
4400 _mesa_unpack_stencil_span( struct gl_context *ctx, GLuint n,
4401 GLenum dstType, GLvoid *dest,
4402 GLenum srcType, const GLvoid *source,
4403 const struct gl_pixelstore_attrib *srcPacking,
4404 GLbitfield transferOps )
4405 {
4406 ASSERT(srcType == GL_BITMAP ||
4407 srcType == GL_UNSIGNED_BYTE ||
4408 srcType == GL_BYTE ||
4409 srcType == GL_UNSIGNED_SHORT ||
4410 srcType == GL_SHORT ||
4411 srcType == GL_UNSIGNED_INT ||
4412 srcType == GL_INT ||
4413 srcType == GL_UNSIGNED_INT_24_8_EXT ||
4414 srcType == GL_HALF_FLOAT_ARB ||
4415 srcType == GL_FLOAT);
4416
4417 ASSERT(dstType == GL_UNSIGNED_BYTE ||
4418 dstType == GL_UNSIGNED_SHORT ||
4419 dstType == GL_UNSIGNED_INT);
4420
4421 /* only shift and offset apply to stencil */
4422 transferOps &= IMAGE_SHIFT_OFFSET_BIT;
4423
4424 /*
4425 * Try simple cases first
4426 */
4427 if (transferOps == 0 &&
4428 !ctx->Pixel.MapStencilFlag &&
4429 srcType == GL_UNSIGNED_BYTE &&
4430 dstType == GL_UNSIGNED_BYTE) {
4431 memcpy(dest, source, n * sizeof(GLubyte));
4432 }
4433 else if (transferOps == 0 &&
4434 !ctx->Pixel.MapStencilFlag &&
4435 srcType == GL_UNSIGNED_INT &&
4436 dstType == GL_UNSIGNED_INT &&
4437 !srcPacking->SwapBytes) {
4438 memcpy(dest, source, n * sizeof(GLuint));
4439 }
4440 else {
4441 /*
4442 * general solution
4443 */
4444 GLuint *indexes = (GLuint *) malloc(n * sizeof(GLuint));
4445
4446 if (!indexes) {
4447 _mesa_error(ctx, GL_OUT_OF_MEMORY, "stencil unpacking");
4448 return;
4449 }
4450
4451 extract_uint_indexes(n, indexes, GL_STENCIL_INDEX, srcType, source,
4452 srcPacking);
4453
4454 if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
4455 /* shift and offset indexes */
4456 _mesa_shift_and_offset_ci(ctx, n, indexes);
4457 }
4458
4459 if (ctx->Pixel.MapStencilFlag) {
4460 /* Apply stencil lookup table */
4461 const GLuint mask = ctx->PixelMaps.StoS.Size - 1;
4462 GLuint i;
4463 for (i = 0; i < n; i++) {
4464 indexes[i] = (GLuint)ctx->PixelMaps.StoS.Map[ indexes[i] & mask ];
4465 }
4466 }
4467
4468 /* convert to dest type */
4469 switch (dstType) {
4470 case GL_UNSIGNED_BYTE:
4471 {
4472 GLubyte *dst = (GLubyte *) dest;
4473 GLuint i;
4474 for (i = 0; i < n; i++) {
4475 dst[i] = (GLubyte) (indexes[i] & 0xff);
4476 }
4477 }
4478 break;
4479 case GL_UNSIGNED_SHORT:
4480 {
4481 GLuint *dst = (GLuint *) dest;
4482 GLuint i;
4483 for (i = 0; i < n; i++) {
4484 dst[i] = (GLushort) (indexes[i] & 0xffff);
4485 }
4486 }
4487 break;
4488 case GL_UNSIGNED_INT:
4489 memcpy(dest, indexes, n * sizeof(GLuint));
4490 break;
4491 default:
4492 _mesa_problem(ctx, "bad dstType in _mesa_unpack_stencil_span");
4493 }
4494
4495 free(indexes);
4496 }
4497 }
4498
4499
4500 void
4501 _mesa_pack_stencil_span( struct gl_context *ctx, GLuint n,
4502 GLenum dstType, GLvoid *dest, const GLstencil *source,
4503 const struct gl_pixelstore_attrib *dstPacking )
4504 {
4505 GLstencil *stencil = (GLstencil *) malloc(n * sizeof(GLstencil));
4506
4507 if (!stencil) {
4508 _mesa_error(ctx, GL_OUT_OF_MEMORY, "stencil packing");
4509 return;
4510 }
4511
4512 if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset ||
4513 ctx->Pixel.MapStencilFlag) {
4514 /* make a copy of input */
4515 memcpy(stencil, source, n * sizeof(GLstencil));
4516 _mesa_apply_stencil_transfer_ops(ctx, n, stencil);
4517 source = stencil;
4518 }
4519
4520 switch (dstType) {
4521 case GL_UNSIGNED_BYTE:
4522 if (sizeof(GLstencil) == 1) {
4523 memcpy( dest, source, n );
4524 }
4525 else {
4526 GLubyte *dst = (GLubyte *) dest;
4527 GLuint i;
4528 for (i=0;i<n;i++) {
4529 dst[i] = (GLubyte) source[i];
4530 }
4531 }
4532 break;
4533 case GL_BYTE:
4534 {
4535 GLbyte *dst = (GLbyte *) dest;
4536 GLuint i;
4537 for (i=0;i<n;i++) {
4538 dst[i] = (GLbyte) (source[i] & 0x7f);
4539 }
4540 }
4541 break;
4542 case GL_UNSIGNED_SHORT:
4543 {
4544 GLushort *dst = (GLushort *) dest;
4545 GLuint i;
4546 for (i=0;i<n;i++) {
4547 dst[i] = (GLushort) source[i];
4548 }
4549 if (dstPacking->SwapBytes) {
4550 _mesa_swap2( (GLushort *) dst, n );
4551 }
4552 }
4553 break;
4554 case GL_SHORT:
4555 {
4556 GLshort *dst = (GLshort *) dest;
4557 GLuint i;
4558 for (i=0;i<n;i++) {
4559 dst[i] = (GLshort) source[i];
4560 }
4561 if (dstPacking->SwapBytes) {
4562 _mesa_swap2( (GLushort *) dst, n );
4563 }
4564 }
4565 break;
4566 case GL_UNSIGNED_INT:
4567 {
4568 GLuint *dst = (GLuint *) dest;
4569 GLuint i;
4570 for (i=0;i<n;i++) {
4571 dst[i] = (GLuint) source[i];
4572 }
4573 if (dstPacking->SwapBytes) {
4574 _mesa_swap4( (GLuint *) dst, n );
4575 }
4576 }
4577 break;
4578 case GL_INT:
4579 {
4580 GLint *dst = (GLint *) dest;
4581 GLuint i;
4582 for (i=0;i<n;i++) {
4583 dst[i] = (GLint) source[i];
4584 }
4585 if (dstPacking->SwapBytes) {
4586 _mesa_swap4( (GLuint *) dst, n );
4587 }
4588 }
4589 break;
4590 case GL_FLOAT:
4591 {
4592 GLfloat *dst = (GLfloat *) dest;
4593 GLuint i;
4594 for (i=0;i<n;i++) {
4595 dst[i] = (GLfloat) source[i];
4596 }
4597 if (dstPacking->SwapBytes) {
4598 _mesa_swap4( (GLuint *) dst, n );
4599 }
4600 }
4601 break;
4602 case GL_HALF_FLOAT_ARB:
4603 {
4604 GLhalfARB *dst = (GLhalfARB *) dest;
4605 GLuint i;
4606 for (i=0;i<n;i++) {
4607 dst[i] = _mesa_float_to_half( (float) source[i] );
4608 }
4609 if (dstPacking->SwapBytes) {
4610 _mesa_swap2( (GLushort *) dst, n );
4611 }
4612 }
4613 break;
4614 case GL_BITMAP:
4615 if (dstPacking->LsbFirst) {
4616 GLubyte *dst = (GLubyte *) dest;
4617 GLint shift = 0;
4618 GLuint i;
4619 for (i = 0; i < n; i++) {
4620 if (shift == 0)
4621 *dst = 0;
4622 *dst |= ((source[i] != 0) << shift);
4623 shift++;
4624 if (shift == 8) {
4625 shift = 0;
4626 dst++;
4627 }
4628 }
4629 }
4630 else {
4631 GLubyte *dst = (GLubyte *) dest;
4632 GLint shift = 7;
4633 GLuint i;
4634 for (i = 0; i < n; i++) {
4635 if (shift == 7)
4636 *dst = 0;
4637 *dst |= ((source[i] != 0) << shift);
4638 shift--;
4639 if (shift < 0) {
4640 shift = 7;
4641 dst++;
4642 }
4643 }
4644 }
4645 break;
4646 default:
4647 _mesa_problem(ctx, "bad type in _mesa_pack_index_span");
4648 }
4649
4650 free(stencil);
4651 }
4652
4653 #define DEPTH_VALUES(GLTYPE, GLTYPE2FLOAT) \
4654 do { \
4655 GLuint i; \
4656 const GLTYPE *src = (const GLTYPE *)source; \
4657 for (i = 0; i < n; i++) { \
4658 GLTYPE value = src[i]; \
4659 if (srcPacking->SwapBytes) { \
4660 if (sizeof(GLTYPE) == 2) { \
4661 SWAP2BYTE(value); \
4662 } else if (sizeof(GLTYPE) == 4) { \
4663 SWAP4BYTE(value); \
4664 } \
4665 } \
4666 depthValues[i] = GLTYPE2FLOAT(value); \
4667 } \
4668 } while (0)
4669
4670
4671 /**
4672 * Unpack a row of depth/z values from memory, returning GLushort, GLuint
4673 * or GLfloat values.
4674 * The glPixelTransfer (scale/bias) params will be applied.
4675 *
4676 * \param dstType one of GL_UNSIGNED_SHORT, GL_UNSIGNED_INT, GL_FLOAT
4677 * \param depthMax max value for returned GLushort or GLuint values
4678 * (ignored for GLfloat).
4679 */
4680 void
4681 _mesa_unpack_depth_span( struct gl_context *ctx, GLuint n,
4682 GLenum dstType, GLvoid *dest, GLuint depthMax,
4683 GLenum srcType, const GLvoid *source,
4684 const struct gl_pixelstore_attrib *srcPacking )
4685 {
4686 GLfloat *depthTemp = NULL, *depthValues;
4687 GLboolean needClamp = GL_FALSE;
4688
4689 /* Look for special cases first.
4690 * Not only are these faster, they're less prone to numeric conversion
4691 * problems. Otherwise, converting from an int type to a float then
4692 * back to an int type can introduce errors that will show up as
4693 * artifacts in things like depth peeling which uses glCopyTexImage.
4694 */
4695 if (ctx->Pixel.DepthScale == 1.0 && ctx->Pixel.DepthBias == 0.0) {
4696 if (srcType == GL_UNSIGNED_INT && dstType == GL_UNSIGNED_SHORT) {
4697 const GLuint *src = (const GLuint *) source;
4698 GLushort *dst = (GLushort *) dest;
4699 GLuint i;
4700 for (i = 0; i < n; i++) {
4701 dst[i] = src[i] >> 16;
4702 }
4703 return;
4704 }
4705 if (srcType == GL_UNSIGNED_SHORT
4706 && dstType == GL_UNSIGNED_INT
4707 && depthMax == 0xffffffff) {
4708 const GLushort *src = (const GLushort *) source;
4709 GLuint *dst = (GLuint *) dest;
4710 GLuint i;
4711 for (i = 0; i < n; i++) {
4712 dst[i] = src[i] | (src[i] << 16);
4713 }
4714 return;
4715 }
4716 if (srcType == GL_UNSIGNED_INT_24_8
4717 && dstType == GL_UNSIGNED_INT
4718 && depthMax == 0xffffff) {
4719 const GLuint *src = (const GLuint *) source;
4720 GLuint *dst = (GLuint *) dest;
4721 GLuint i;
4722 for (i = 0; i < n; i++) {
4723 dst[i] = src[i] >> 8;
4724 }
4725 return;
4726 }
4727 /* XXX may want to add additional cases here someday */
4728 }
4729
4730 /* general case path follows */
4731
4732 if (dstType == GL_FLOAT) {
4733 depthValues = (GLfloat *) dest;
4734 }
4735 else {
4736 depthTemp = (GLfloat *) malloc(n * sizeof(GLfloat));
4737 if (!depthTemp) {
4738 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel unpacking");
4739 return;
4740 }
4741
4742 depthValues = depthTemp;
4743 }
4744
4745 /* Convert incoming values to GLfloat. Some conversions will require
4746 * clamping, below.
4747 */
4748 switch (srcType) {
4749 case GL_BYTE:
4750 DEPTH_VALUES(GLbyte, BYTE_TO_FLOAT);
4751 needClamp = GL_TRUE;
4752 break;
4753 case GL_UNSIGNED_BYTE:
4754 DEPTH_VALUES(GLubyte, UBYTE_TO_FLOAT);
4755 break;
4756 case GL_SHORT:
4757 DEPTH_VALUES(GLshort, SHORT_TO_FLOAT);
4758 needClamp = GL_TRUE;
4759 break;
4760 case GL_UNSIGNED_SHORT:
4761 DEPTH_VALUES(GLushort, USHORT_TO_FLOAT);
4762 break;
4763 case GL_INT:
4764 DEPTH_VALUES(GLint, INT_TO_FLOAT);
4765 needClamp = GL_TRUE;
4766 break;
4767 case GL_UNSIGNED_INT:
4768 DEPTH_VALUES(GLuint, UINT_TO_FLOAT);
4769 break;
4770 case GL_UNSIGNED_INT_24_8_EXT: /* GL_EXT_packed_depth_stencil */
4771 if (dstType == GL_UNSIGNED_INT_24_8_EXT &&
4772 depthMax == 0xffffff &&
4773 ctx->Pixel.DepthScale == 1.0 &&
4774 ctx->Pixel.DepthBias == 0.0) {
4775 const GLuint *src = (const GLuint *) source;
4776 GLuint *zValues = (GLuint *) dest;
4777 GLuint i;
4778 for (i = 0; i < n; i++) {
4779 GLuint value = src[i];
4780 if (srcPacking->SwapBytes) {
4781 SWAP4BYTE(value);
4782 }
4783 zValues[i] = value & 0xffffff00;
4784 }
4785 free(depthTemp);
4786 return;
4787 }
4788 else {
4789 const GLuint *src = (const GLuint *) source;
4790 const GLfloat scale = 1.0f / 0xffffff;
4791 GLuint i;
4792 for (i = 0; i < n; i++) {
4793 GLuint value = src[i];
4794 if (srcPacking->SwapBytes) {
4795 SWAP4BYTE(value);
4796 }
4797 depthValues[i] = (value >> 8) * scale;
4798 }
4799 }
4800 break;
4801 case GL_FLOAT:
4802 DEPTH_VALUES(GLfloat, 1*);
4803 needClamp = GL_TRUE;
4804 break;
4805 case GL_HALF_FLOAT_ARB:
4806 {
4807 GLuint i;
4808 const GLhalfARB *src = (const GLhalfARB *) source;
4809 for (i = 0; i < n; i++) {
4810 GLhalfARB value = src[i];
4811 if (srcPacking->SwapBytes) {
4812 SWAP2BYTE(value);
4813 }
4814 depthValues[i] = _mesa_half_to_float(value);
4815 }
4816 needClamp = GL_TRUE;
4817 }
4818 break;
4819 default:
4820 _mesa_problem(NULL, "bad type in _mesa_unpack_depth_span()");
4821 free(depthTemp);
4822 return;
4823 }
4824
4825 /* apply depth scale and bias */
4826 {
4827 const GLfloat scale = ctx->Pixel.DepthScale;
4828 const GLfloat bias = ctx->Pixel.DepthBias;
4829 if (scale != 1.0 || bias != 0.0) {
4830 GLuint i;
4831 for (i = 0; i < n; i++) {
4832 depthValues[i] = depthValues[i] * scale + bias;
4833 }
4834 needClamp = GL_TRUE;
4835 }
4836 }
4837
4838 /* clamp to [0, 1] */
4839 if (needClamp) {
4840 GLuint i;
4841 for (i = 0; i < n; i++) {
4842 depthValues[i] = (GLfloat)CLAMP(depthValues[i], 0.0, 1.0);
4843 }
4844 }
4845
4846 /*
4847 * Convert values to dstType
4848 */
4849 if (dstType == GL_UNSIGNED_INT) {
4850 GLuint *zValues = (GLuint *) dest;
4851 GLuint i;
4852 if (depthMax <= 0xffffff) {
4853 /* no overflow worries */
4854 for (i = 0; i < n; i++) {
4855 zValues[i] = (GLuint) (depthValues[i] * (GLfloat) depthMax);
4856 }
4857 }
4858 else {
4859 /* need to use double precision to prevent overflow problems */
4860 for (i = 0; i < n; i++) {
4861 GLdouble z = depthValues[i] * (GLfloat) depthMax;
4862 if (z >= (GLdouble) 0xffffffff)
4863 zValues[i] = 0xffffffff;
4864 else
4865 zValues[i] = (GLuint) z;
4866 }
4867 }
4868 }
4869 else if (dstType == GL_UNSIGNED_SHORT) {
4870 GLushort *zValues = (GLushort *) dest;
4871 GLuint i;
4872 ASSERT(depthMax <= 0xffff);
4873 for (i = 0; i < n; i++) {
4874 zValues[i] = (GLushort) (depthValues[i] * (GLfloat) depthMax);
4875 }
4876 }
4877 else {
4878 ASSERT(dstType == GL_FLOAT);
4879 /*ASSERT(depthMax == 1.0F);*/
4880 }
4881
4882 free(depthTemp);
4883 }
4884
4885
4886 /*
4887 * Pack an array of depth values. The values are floats in [0,1].
4888 */
4889 void
4890 _mesa_pack_depth_span( struct gl_context *ctx, GLuint n, GLvoid *dest,
4891 GLenum dstType, const GLfloat *depthSpan,
4892 const struct gl_pixelstore_attrib *dstPacking )
4893 {
4894 GLfloat *depthCopy = (GLfloat *) malloc(n * sizeof(GLfloat));
4895 if (!depthCopy) {
4896 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel packing");
4897 return;
4898 }
4899
4900 if (ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0) {
4901 memcpy(depthCopy, depthSpan, n * sizeof(GLfloat));
4902 _mesa_scale_and_bias_depth(ctx, n, depthCopy);
4903 depthSpan = depthCopy;
4904 }
4905
4906 switch (dstType) {
4907 case GL_UNSIGNED_BYTE:
4908 {
4909 GLubyte *dst = (GLubyte *) dest;
4910 GLuint i;
4911 for (i = 0; i < n; i++) {
4912 dst[i] = FLOAT_TO_UBYTE( depthSpan[i] );
4913 }
4914 }
4915 break;
4916 case GL_BYTE:
4917 {
4918 GLbyte *dst = (GLbyte *) dest;
4919 GLuint i;
4920 for (i = 0; i < n; i++) {
4921 dst[i] = FLOAT_TO_BYTE( depthSpan[i] );
4922 }
4923 }
4924 break;
4925 case GL_UNSIGNED_SHORT:
4926 {
4927 GLushort *dst = (GLushort *) dest;
4928 GLuint i;
4929 for (i = 0; i < n; i++) {
4930 CLAMPED_FLOAT_TO_USHORT(dst[i], depthSpan[i]);
4931 }
4932 if (dstPacking->SwapBytes) {
4933 _mesa_swap2( (GLushort *) dst, n );
4934 }
4935 }
4936 break;
4937 case GL_SHORT:
4938 {
4939 GLshort *dst = (GLshort *) dest;
4940 GLuint i;
4941 for (i = 0; i < n; i++) {
4942 dst[i] = FLOAT_TO_SHORT( depthSpan[i] );
4943 }
4944 if (dstPacking->SwapBytes) {
4945 _mesa_swap2( (GLushort *) dst, n );
4946 }
4947 }
4948 break;
4949 case GL_UNSIGNED_INT:
4950 {
4951 GLuint *dst = (GLuint *) dest;
4952 GLuint i;
4953 for (i = 0; i < n; i++) {
4954 dst[i] = FLOAT_TO_UINT( depthSpan[i] );
4955 }
4956 if (dstPacking->SwapBytes) {
4957 _mesa_swap4( (GLuint *) dst, n );
4958 }
4959 }
4960 break;
4961 case GL_INT:
4962 {
4963 GLint *dst = (GLint *) dest;
4964 GLuint i;
4965 for (i = 0; i < n; i++) {
4966 dst[i] = FLOAT_TO_INT( depthSpan[i] );
4967 }
4968 if (dstPacking->SwapBytes) {
4969 _mesa_swap4( (GLuint *) dst, n );
4970 }
4971 }
4972 break;
4973 case GL_FLOAT:
4974 {
4975 GLfloat *dst = (GLfloat *) dest;
4976 GLuint i;
4977 for (i = 0; i < n; i++) {
4978 dst[i] = depthSpan[i];
4979 }
4980 if (dstPacking->SwapBytes) {
4981 _mesa_swap4( (GLuint *) dst, n );
4982 }
4983 }
4984 break;
4985 case GL_HALF_FLOAT_ARB:
4986 {
4987 GLhalfARB *dst = (GLhalfARB *) dest;
4988 GLuint i;
4989 for (i = 0; i < n; i++) {
4990 dst[i] = _mesa_float_to_half(depthSpan[i]);
4991 }
4992 if (dstPacking->SwapBytes) {
4993 _mesa_swap2( (GLushort *) dst, n );
4994 }
4995 }
4996 break;
4997 default:
4998 _mesa_problem(ctx, "bad type in _mesa_pack_depth_span");
4999 }
5000
5001 free(depthCopy);
5002 }
5003
5004
5005
5006 /**
5007 * Pack depth and stencil values as GL_DEPTH_STENCIL/GL_UNSIGNED_INT_24_8.
5008 */
5009 void
5010 _mesa_pack_depth_stencil_span(struct gl_context *ctx, GLuint n, GLuint *dest,
5011 const GLfloat *depthVals,
5012 const GLstencil *stencilVals,
5013 const struct gl_pixelstore_attrib *dstPacking)
5014 {
5015 GLfloat *depthCopy = (GLfloat *) malloc(n * sizeof(GLfloat));
5016 GLstencil *stencilCopy = (GLstencil *) malloc(n * sizeof(GLstencil));
5017 GLuint i;
5018
5019 if (!depthCopy || !stencilCopy) {
5020 _mesa_error(ctx, GL_OUT_OF_MEMORY, "pixel packing");
5021 free(depthCopy);
5022 free(stencilCopy);
5023 return;
5024 }
5025
5026 if (ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0) {
5027 memcpy(depthCopy, depthVals, n * sizeof(GLfloat));
5028 _mesa_scale_and_bias_depth(ctx, n, depthCopy);
5029 depthVals = depthCopy;
5030 }
5031
5032 if (ctx->Pixel.IndexShift ||
5033 ctx->Pixel.IndexOffset ||
5034 ctx->Pixel.MapStencilFlag) {
5035 memcpy(stencilCopy, stencilVals, n * sizeof(GLstencil));
5036 _mesa_apply_stencil_transfer_ops(ctx, n, stencilCopy);
5037 stencilVals = stencilCopy;
5038 }
5039
5040 for (i = 0; i < n; i++) {
5041 GLuint z = (GLuint) (depthVals[i] * 0xffffff);
5042 dest[i] = (z << 8) | (stencilVals[i] & 0xff);
5043 }
5044
5045 if (dstPacking->SwapBytes) {
5046 _mesa_swap4(dest, n);
5047 }
5048
5049 free(depthCopy);
5050 free(stencilCopy);
5051 }
5052
5053
5054
5055
5056 /**
5057 * Unpack image data. Apply byte swapping, byte flipping (bitmap).
5058 * Return all image data in a contiguous block. This is used when we
5059 * compile glDrawPixels, glTexImage, etc into a display list. We
5060 * need a copy of the data in a standard format.
5061 */
5062 void *
5063 _mesa_unpack_image( GLuint dimensions,
5064 GLsizei width, GLsizei height, GLsizei depth,
5065 GLenum format, GLenum type, const GLvoid *pixels,
5066 const struct gl_pixelstore_attrib *unpack )
5067 {
5068 GLint bytesPerRow, compsPerRow;
5069 GLboolean flipBytes, swap2, swap4;
5070
5071 if (!pixels)
5072 return NULL; /* not necessarily an error */
5073
5074 if (width <= 0 || height <= 0 || depth <= 0)
5075 return NULL; /* generate error later */
5076
5077 if (type == GL_BITMAP) {
5078 bytesPerRow = (width + 7) >> 3;
5079 flipBytes = unpack->LsbFirst;
5080 swap2 = swap4 = GL_FALSE;
5081 compsPerRow = 0;
5082 }
5083 else {
5084 const GLint bytesPerPixel = _mesa_bytes_per_pixel(format, type);
5085 GLint components = _mesa_components_in_format(format);
5086 GLint bytesPerComp;
5087
5088 if (_mesa_type_is_packed(type))
5089 components = 1;
5090
5091 if (bytesPerPixel <= 0 || components <= 0)
5092 return NULL; /* bad format or type. generate error later */
5093 bytesPerRow = bytesPerPixel * width;
5094 bytesPerComp = bytesPerPixel / components;
5095 flipBytes = GL_FALSE;
5096 swap2 = (bytesPerComp == 2) && unpack->SwapBytes;
5097 swap4 = (bytesPerComp == 4) && unpack->SwapBytes;
5098 compsPerRow = components * width;
5099 assert(compsPerRow >= width);
5100 }
5101
5102 {
5103 GLubyte *destBuffer
5104 = (GLubyte *) malloc(bytesPerRow * height * depth);
5105 GLubyte *dst;
5106 GLint img, row;
5107 if (!destBuffer)
5108 return NULL; /* generate GL_OUT_OF_MEMORY later */
5109
5110 dst = destBuffer;
5111 for (img = 0; img < depth; img++) {
5112 for (row = 0; row < height; row++) {
5113 const GLvoid *src = _mesa_image_address(dimensions, unpack, pixels,
5114 width, height, format, type, img, row, 0);
5115
5116 if ((type == GL_BITMAP) && (unpack->SkipPixels & 0x7)) {
5117 GLint i;
5118 flipBytes = GL_FALSE;
5119 if (unpack->LsbFirst) {
5120 GLubyte srcMask = 1 << (unpack->SkipPixels & 0x7);
5121 GLubyte dstMask = 128;
5122 const GLubyte *s = src;
5123 GLubyte *d = dst;
5124 *d = 0;
5125 for (i = 0; i < width; i++) {
5126 if (*s & srcMask) {
5127 *d |= dstMask;
5128 }
5129 if (srcMask == 128) {
5130 srcMask = 1;
5131 s++;
5132 }
5133 else {
5134 srcMask = srcMask << 1;
5135 }
5136 if (dstMask == 1) {
5137 dstMask = 128;
5138 d++;
5139 *d = 0;
5140 }
5141 else {
5142 dstMask = dstMask >> 1;
5143 }
5144 }
5145 }
5146 else {
5147 GLubyte srcMask = 128 >> (unpack->SkipPixels & 0x7);
5148 GLubyte dstMask = 128;
5149 const GLubyte *s = src;
5150 GLubyte *d = dst;
5151 *d = 0;
5152 for (i = 0; i < width; i++) {
5153 if (*s & srcMask) {
5154 *d |= dstMask;
5155 }
5156 if (srcMask == 1) {
5157 srcMask = 128;
5158 s++;
5159 }
5160 else {
5161 srcMask = srcMask >> 1;
5162 }
5163 if (dstMask == 1) {
5164 dstMask = 128;
5165 d++;
5166 *d = 0;
5167 }
5168 else {
5169 dstMask = dstMask >> 1;
5170 }
5171 }
5172 }
5173 }
5174 else {
5175 memcpy(dst, src, bytesPerRow);
5176 }
5177
5178 /* byte flipping/swapping */
5179 if (flipBytes) {
5180 flip_bytes((GLubyte *) dst, bytesPerRow);
5181 }
5182 else if (swap2) {
5183 _mesa_swap2((GLushort*) dst, compsPerRow);
5184 }
5185 else if (swap4) {
5186 _mesa_swap4((GLuint*) dst, compsPerRow);
5187 }
5188 dst += bytesPerRow;
5189 }
5190 }
5191 return destBuffer;
5192 }
5193 }
5194