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Major rework of tnl module
[mesa.git] / src / mesa / main / histogram.c
1 /* $Id: histogram.c,v 1.5 2000/12/26 05:09:28 keithw Exp $ */
2
3 /*
4 * Mesa 3-D graphics library
5 * Version: 3.5
6 *
7 * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27
28 #ifdef PC_HEADER
29 #include "all.h"
30 #else
31 #include "glheader.h"
32 #include "colormac.h"
33 #include "context.h"
34 #include "image.h"
35 #include "histogram.h"
36 #include "mmath.h"
37 #endif
38
39
40 /*
41 * XXX the packed pixel formats haven't been tested.
42 */
43 static void
44 pack_histogram( GLcontext *ctx,
45 GLuint n, CONST GLuint rgba[][4],
46 GLenum format, GLenum type, GLvoid *destination,
47 const struct gl_pixelstore_attrib *packing )
48 {
49 const GLint comps = _mesa_components_in_format(format);
50 GLuint luminance[MAX_WIDTH];
51
52 if (format == GL_LUMINANCE || format == GL_LUMINANCE_ALPHA) {
53 GLuint i;
54 for (i = 0; i < n; i++) {
55 luminance[i] = rgba[i][RCOMP] + rgba[i][GCOMP] + rgba[i][BCOMP];
56 }
57 }
58
59 #define PACK_MACRO(TYPE) \
60 { \
61 GLuint i; \
62 switch (format) { \
63 case GL_RED: \
64 for (i=0;i<n;i++) \
65 dst[i] = (TYPE) rgba[i][RCOMP]; \
66 break; \
67 case GL_GREEN: \
68 for (i=0;i<n;i++) \
69 dst[i] = (TYPE) rgba[i][GCOMP]; \
70 break; \
71 case GL_BLUE: \
72 for (i=0;i<n;i++) \
73 dst[i] = (TYPE) rgba[i][BCOMP]; \
74 break; \
75 case GL_ALPHA: \
76 for (i=0;i<n;i++) \
77 dst[i] = (TYPE) rgba[i][ACOMP]; \
78 break; \
79 case GL_LUMINANCE: \
80 for (i=0;i<n;i++) \
81 dst[i] = (TYPE) luminance[i]; \
82 break; \
83 case GL_LUMINANCE_ALPHA: \
84 for (i=0;i<n;i++) { \
85 dst[i*2+0] = (TYPE) luminance[i]; \
86 dst[i*2+1] = (TYPE) rgba[i][ACOMP]; \
87 } \
88 break; \
89 case GL_RGB: \
90 for (i=0;i<n;i++) { \
91 dst[i*3+0] = (TYPE) rgba[i][RCOMP]; \
92 dst[i*3+1] = (TYPE) rgba[i][GCOMP]; \
93 dst[i*3+2] = (TYPE) rgba[i][BCOMP]; \
94 } \
95 break; \
96 case GL_RGBA: \
97 for (i=0;i<n;i++) { \
98 dst[i*4+0] = (TYPE) rgba[i][RCOMP]; \
99 dst[i*4+1] = (TYPE) rgba[i][GCOMP]; \
100 dst[i*4+2] = (TYPE) rgba[i][BCOMP]; \
101 dst[i*4+3] = (TYPE) rgba[i][ACOMP]; \
102 } \
103 break; \
104 case GL_BGR: \
105 for (i=0;i<n;i++) { \
106 dst[i*3+0] = (TYPE) rgba[i][BCOMP]; \
107 dst[i*3+1] = (TYPE) rgba[i][GCOMP]; \
108 dst[i*3+2] = (TYPE) rgba[i][RCOMP]; \
109 } \
110 break; \
111 case GL_BGRA: \
112 for (i=0;i<n;i++) { \
113 dst[i*4+0] = (TYPE) rgba[i][BCOMP]; \
114 dst[i*4+1] = (TYPE) rgba[i][GCOMP]; \
115 dst[i*4+2] = (TYPE) rgba[i][RCOMP]; \
116 dst[i*4+3] = (TYPE) rgba[i][ACOMP]; \
117 } \
118 break; \
119 case GL_ABGR_EXT: \
120 for (i=0;i<n;i++) { \
121 dst[i*4+0] = (TYPE) rgba[i][ACOMP]; \
122 dst[i*4+1] = (TYPE) rgba[i][BCOMP]; \
123 dst[i*4+2] = (TYPE) rgba[i][GCOMP]; \
124 dst[i*4+3] = (TYPE) rgba[i][RCOMP]; \
125 } \
126 break; \
127 default: \
128 gl_problem(ctx, "bad format in pack_histogram"); \
129 } \
130 }
131
132 switch (type) {
133 case GL_UNSIGNED_BYTE:
134 {
135 GLubyte *dst = (GLubyte *) destination;
136 PACK_MACRO(GLubyte);
137 }
138 break;
139 case GL_BYTE:
140 {
141 GLbyte *dst = (GLbyte *) destination;
142 PACK_MACRO(GLbyte);
143 }
144 break;
145 case GL_UNSIGNED_SHORT:
146 {
147 GLushort *dst = (GLushort *) destination;
148 PACK_MACRO(GLushort);
149 if (packing->SwapBytes) {
150 _mesa_swap2(dst, n * comps);
151 }
152 }
153 break;
154 case GL_SHORT:
155 {
156 GLshort *dst = (GLshort *) destination;
157 PACK_MACRO(GLshort);
158 if (packing->SwapBytes) {
159 _mesa_swap2((GLushort *) dst, n * comps);
160 }
161 }
162 break;
163 case GL_UNSIGNED_INT:
164 {
165 GLuint *dst = (GLuint *) destination;
166 PACK_MACRO(GLuint);
167 if (packing->SwapBytes) {
168 _mesa_swap4(dst, n * comps);
169 }
170 }
171 break;
172 case GL_INT:
173 {
174 GLint *dst = (GLint *) destination;
175 PACK_MACRO(GLint);
176 if (packing->SwapBytes) {
177 _mesa_swap4((GLuint *) dst, n * comps);
178 }
179 }
180 break;
181 case GL_FLOAT:
182 {
183 GLfloat *dst = (GLfloat *) destination;
184 PACK_MACRO(GLfloat);
185 if (packing->SwapBytes) {
186 _mesa_swap4((GLuint *) dst, n * comps);
187 }
188 }
189 break;
190 case GL_UNSIGNED_BYTE_3_3_2:
191 if (format == GL_RGB) {
192 GLubyte *dst = (GLubyte *) destination;
193 GLuint i;
194 for (i = 0; i < n; i++) {
195 dst[i] = ((rgba[i][RCOMP] & 0x7) << 5)
196 | ((rgba[i][GCOMP] & 0x7) << 2)
197 | ((rgba[i][BCOMP] & 0x3) );
198 }
199 }
200 else {
201 GLubyte *dst = (GLubyte *) destination;
202 GLuint i;
203 ASSERT(format == GL_BGR);
204 for (i = 0; i < n; i++) {
205 dst[i] = ((rgba[i][BCOMP] & 0x7) << 5)
206 | ((rgba[i][GCOMP] & 0x7) << 2)
207 | ((rgba[i][RCOMP] & 0x3) );
208 }
209 }
210 break;
211 case GL_UNSIGNED_BYTE_2_3_3_REV:
212 if (format == GL_RGB) {
213 GLubyte *dst = (GLubyte *) destination;
214 GLuint i;
215 for (i = 0; i < n; i++) {
216 dst[i] = ((rgba[i][RCOMP] & 0x3) << 6)
217 | ((rgba[i][GCOMP] & 0x7) << 3)
218 | ((rgba[i][BCOMP] & 0x7) );
219 }
220 }
221 else {
222 GLubyte *dst = (GLubyte *) destination;
223 GLuint i;
224 ASSERT(format == GL_BGR);
225 for (i = 0; i < n; i++) {
226 dst[i] = ((rgba[i][BCOMP] & 0x3) << 6)
227 | ((rgba[i][GCOMP] & 0x7) << 3)
228 | ((rgba[i][RCOMP] & 0x7) );
229 }
230 }
231 break;
232 case GL_UNSIGNED_SHORT_5_6_5:
233 if (format == GL_RGB) {
234 GLushort *dst = (GLushort *) destination;
235 GLuint i;
236 for (i = 0; i < n; i++) {
237 dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11)
238 | ((rgba[i][GCOMP] & 0x3f) << 5)
239 | ((rgba[i][BCOMP] & 0x1f) );
240 }
241 }
242 else {
243 GLushort *dst = (GLushort *) destination;
244 GLuint i;
245 ASSERT(format == GL_BGR);
246 for (i = 0; i < n; i++) {
247 dst[i] = ((rgba[i][BCOMP] & 0x1f) << 11)
248 | ((rgba[i][GCOMP] & 0x3f) << 5)
249 | ((rgba[i][RCOMP] & 0x1f) );
250 }
251 }
252 break;
253 case GL_UNSIGNED_SHORT_5_6_5_REV:
254 if (format == GL_RGB) {
255 GLushort *dst = (GLushort *) destination;
256 GLuint i;
257 for (i = 0; i < n; i++) {
258 dst[i] = ((rgba[i][BCOMP] & 0x1f) << 11)
259 | ((rgba[i][GCOMP] & 0x3f) << 5)
260 | ((rgba[i][RCOMP] & 0x1f) );
261 }
262 }
263 else {
264 GLushort *dst = (GLushort *) destination;
265 GLuint i;
266 ASSERT(format == GL_BGR);
267 for (i = 0; i < n; i++) {
268 dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11)
269 | ((rgba[i][GCOMP] & 0x3f) << 5)
270 | ((rgba[i][BCOMP] & 0x1f) );
271 }
272 }
273 break;
274 case GL_UNSIGNED_SHORT_4_4_4_4:
275 if (format == GL_RGBA) {
276 GLushort *dst = (GLushort *) destination;
277 GLuint i;
278 for (i = 0; i < n; i++) {
279 dst[i] = ((rgba[i][RCOMP] & 0xf) << 12)
280 | ((rgba[i][GCOMP] & 0xf) << 8)
281 | ((rgba[i][BCOMP] & 0xf) << 4)
282 | ((rgba[i][ACOMP] & 0xf) );
283 }
284 }
285 else if (format == GL_BGRA) {
286 GLushort *dst = (GLushort *) destination;
287 GLuint i;
288 for (i = 0; i < n; i++) {
289 dst[i] = ((rgba[i][BCOMP] & 0xf) << 12)
290 | ((rgba[i][GCOMP] & 0xf) << 8)
291 | ((rgba[i][RCOMP] & 0xf) << 4)
292 | ((rgba[i][ACOMP] & 0xf) );
293 }
294 }
295 else {
296 GLushort *dst = (GLushort *) destination;
297 GLuint i;
298 ASSERT(format == GL_ABGR_EXT);
299 for (i = 0; i < n; i++) {
300 dst[i] = ((rgba[i][ACOMP] & 0xf) << 12)
301 | ((rgba[i][BCOMP] & 0xf) << 8)
302 | ((rgba[i][GCOMP] & 0xf) << 4)
303 | ((rgba[i][RCOMP] & 0xf) );
304 }
305 }
306 break;
307 case GL_UNSIGNED_SHORT_4_4_4_4_REV:
308 if (format == GL_RGBA) {
309 GLushort *dst = (GLushort *) destination;
310 GLuint i;
311 for (i = 0; i < n; i++) {
312 dst[i] = ((rgba[i][ACOMP] & 0xf) << 12)
313 | ((rgba[i][BCOMP] & 0xf) << 8)
314 | ((rgba[i][GCOMP] & 0xf) << 4)
315 | ((rgba[i][RCOMP] & 0xf) );
316 }
317 }
318 else if (format == GL_BGRA) {
319 GLushort *dst = (GLushort *) destination;
320 GLuint i;
321 for (i = 0; i < n; i++) {
322 dst[i] = ((rgba[i][ACOMP] & 0xf) << 12)
323 | ((rgba[i][RCOMP] & 0xf) << 8)
324 | ((rgba[i][GCOMP] & 0xf) << 4)
325 | ((rgba[i][BCOMP] & 0xf) );
326 }
327 }
328 else {
329 GLushort *dst = (GLushort *) destination;
330 GLuint i;
331 ASSERT(format == GL_ABGR_EXT);
332 for (i = 0; i < n; i++) {
333 dst[i] = ((rgba[i][RCOMP] & 0xf) << 12)
334 | ((rgba[i][GCOMP] & 0xf) << 8)
335 | ((rgba[i][BCOMP] & 0xf) << 4)
336 | ((rgba[i][ACOMP] & 0xf) );
337 }
338 }
339 break;
340 case GL_UNSIGNED_SHORT_5_5_5_1:
341 if (format == GL_RGBA) {
342 GLushort *dst = (GLushort *) destination;
343 GLuint i;
344 for (i = 0; i < n; i++) {
345 dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11)
346 | ((rgba[i][GCOMP] & 0x1f) << 6)
347 | ((rgba[i][BCOMP] & 0x1f) << 1)
348 | ((rgba[i][ACOMP] & 0x1) );
349 }
350 }
351 else if (format == GL_BGRA) {
352 GLushort *dst = (GLushort *) destination;
353 GLuint i;
354 for (i = 0; i < n; i++) {
355 dst[i] = ((rgba[i][BCOMP] & 0x1f) << 11)
356 | ((rgba[i][GCOMP] & 0x1f) << 6)
357 | ((rgba[i][RCOMP] & 0x1f) << 1)
358 | ((rgba[i][ACOMP] & 0x1) );
359 }
360 }
361 else {
362 GLushort *dst = (GLushort *) destination;
363 GLuint i;
364 ASSERT(format == GL_ABGR_EXT);
365 for (i = 0; i < n; i++) {
366 dst[i] = ((rgba[i][ACOMP] & 0x1f) << 11)
367 | ((rgba[i][BCOMP] & 0x1f) << 6)
368 | ((rgba[i][GCOMP] & 0x1f) << 1)
369 | ((rgba[i][RCOMP] & 0x1) );
370 }
371 }
372 break;
373 case GL_UNSIGNED_SHORT_1_5_5_5_REV:
374 if (format == GL_RGBA) {
375 GLushort *dst = (GLushort *) destination;
376 GLuint i;
377 for (i = 0; i < n; i++) {
378 dst[i] = ((rgba[i][ACOMP] & 0x1f) << 11)
379 | ((rgba[i][BCOMP] & 0x1f) << 6)
380 | ((rgba[i][GCOMP] & 0x1f) << 1)
381 | ((rgba[i][RCOMP] & 0x1) );
382 }
383 }
384 else if (format == GL_BGRA) {
385 GLushort *dst = (GLushort *) destination;
386 GLuint i;
387 for (i = 0; i < n; i++) {
388 dst[i] = ((rgba[i][ACOMP] & 0x1f) << 11)
389 | ((rgba[i][RCOMP] & 0x1f) << 6)
390 | ((rgba[i][GCOMP] & 0x1f) << 1)
391 | ((rgba[i][BCOMP] & 0x1) );
392 }
393 }
394 else {
395 GLushort *dst = (GLushort *) destination;
396 GLuint i;
397 ASSERT(format == GL_ABGR_EXT);
398 for (i = 0; i < n; i++) {
399 dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11)
400 | ((rgba[i][GCOMP] & 0x1f) << 6)
401 | ((rgba[i][BCOMP] & 0x1f) << 1)
402 | ((rgba[i][ACOMP] & 0x1) );
403 }
404 }
405 break;
406 case GL_UNSIGNED_INT_8_8_8_8:
407 if (format == GL_RGBA) {
408 GLuint *dst = (GLuint *) destination;
409 GLuint i;
410 for (i = 0; i < n; i++) {
411 dst[i] = ((rgba[i][RCOMP] & 0xff) << 24)
412 | ((rgba[i][GCOMP] & 0xff) << 16)
413 | ((rgba[i][BCOMP] & 0xff) << 8)
414 | ((rgba[i][ACOMP] & 0xff) );
415 }
416 }
417 else if (format == GL_BGRA) {
418 GLuint *dst = (GLuint *) destination;
419 GLuint i;
420 for (i = 0; i < n; i++) {
421 dst[i] = ((rgba[i][BCOMP] & 0xff) << 24)
422 | ((rgba[i][GCOMP] & 0xff) << 16)
423 | ((rgba[i][RCOMP] & 0xff) << 8)
424 | ((rgba[i][ACOMP] & 0xff) );
425 }
426 }
427 else {
428 GLuint *dst = (GLuint *) destination;
429 GLuint i;
430 ASSERT(format == GL_ABGR_EXT);
431 for (i = 0; i < n; i++) {
432 dst[i] = ((rgba[i][ACOMP] & 0xff) << 24)
433 | ((rgba[i][BCOMP] & 0xff) << 16)
434 | ((rgba[i][GCOMP] & 0xff) << 8)
435 | ((rgba[i][RCOMP] & 0xff) );
436 }
437 }
438 break;
439 case GL_UNSIGNED_INT_8_8_8_8_REV:
440 if (format == GL_RGBA) {
441 GLuint *dst = (GLuint *) destination;
442 GLuint i;
443 for (i = 0; i < n; i++) {
444 dst[i] = ((rgba[i][ACOMP] & 0xff) << 24)
445 | ((rgba[i][BCOMP] & 0xff) << 16)
446 | ((rgba[i][GCOMP] & 0xff) << 8)
447 | ((rgba[i][RCOMP] & 0xff) );
448 }
449 }
450 else if (format == GL_BGRA) {
451 GLuint *dst = (GLuint *) destination;
452 GLuint i;
453 for (i = 0; i < n; i++) {
454 dst[i] = ((rgba[i][ACOMP] & 0xff) << 24)
455 | ((rgba[i][RCOMP] & 0xff) << 16)
456 | ((rgba[i][GCOMP] & 0xff) << 8)
457 | ((rgba[i][BCOMP] & 0xff) );
458 }
459 }
460 else {
461 GLuint *dst = (GLuint *) destination;
462 GLuint i;
463 ASSERT(format == GL_ABGR_EXT);
464 for (i = 0; i < n; i++) {
465 dst[i] = ((rgba[i][RCOMP] & 0xff) << 24)
466 | ((rgba[i][GCOMP] & 0xff) << 16)
467 | ((rgba[i][BCOMP] & 0xff) << 8)
468 | ((rgba[i][ACOMP] & 0xff) );
469 }
470 }
471 break;
472 case GL_UNSIGNED_INT_10_10_10_2:
473 if (format == GL_RGBA) {
474 GLuint *dst = (GLuint *) destination;
475 GLuint i;
476 for (i = 0; i < n; i++) {
477 dst[i] = ((rgba[i][RCOMP] & 0x3ff) << 22)
478 | ((rgba[i][GCOMP] & 0x3ff) << 12)
479 | ((rgba[i][BCOMP] & 0x3ff) << 2)
480 | ((rgba[i][ACOMP] & 0x3) );
481 }
482 }
483 else if (format == GL_BGRA) {
484 GLuint *dst = (GLuint *) destination;
485 GLuint i;
486 for (i = 0; i < n; i++) {
487 dst[i] = ((rgba[i][BCOMP] & 0x3ff) << 22)
488 | ((rgba[i][GCOMP] & 0x3ff) << 12)
489 | ((rgba[i][RCOMP] & 0x3ff) << 2)
490 | ((rgba[i][ACOMP] & 0x3) );
491 }
492 }
493 else {
494 GLuint *dst = (GLuint *) destination;
495 GLuint i;
496 ASSERT(format == GL_ABGR_EXT);
497 for (i = 0; i < n; i++) {
498 dst[i] = ((rgba[i][ACOMP] & 0x3ff) << 22)
499 | ((rgba[i][BCOMP] & 0x3ff) << 12)
500 | ((rgba[i][GCOMP] & 0x3ff) << 2)
501 | ((rgba[i][RCOMP] & 0x3) );
502 }
503 }
504 break;
505 case GL_UNSIGNED_INT_2_10_10_10_REV:
506 if (format == GL_RGBA) {
507 GLuint *dst = (GLuint *) destination;
508 GLuint i;
509 for (i = 0; i < n; i++) {
510 dst[i] = ((rgba[i][ACOMP] & 0x3ff) << 22)
511 | ((rgba[i][BCOMP] & 0x3ff) << 12)
512 | ((rgba[i][GCOMP] & 0x3ff) << 2)
513 | ((rgba[i][RCOMP] & 0x3) );
514 }
515 }
516 else if (format == GL_BGRA) {
517 GLuint *dst = (GLuint *) destination;
518 GLuint i;
519 for (i = 0; i < n; i++) {
520 dst[i] = ((rgba[i][ACOMP] & 0x3ff) << 22)
521 | ((rgba[i][RCOMP] & 0x3ff) << 12)
522 | ((rgba[i][GCOMP] & 0x3ff) << 2)
523 | ((rgba[i][BCOMP] & 0x3) );
524 }
525 }
526 else {
527 GLuint *dst = (GLuint *) destination;
528 GLuint i;
529 ASSERT(format == GL_ABGR_EXT);
530 for (i = 0; i < n; i++) {
531 dst[i] = ((rgba[i][RCOMP] & 0x3ff) << 22)
532 | ((rgba[i][GCOMP] & 0x3ff) << 12)
533 | ((rgba[i][BCOMP] & 0x3ff) << 2)
534 | ((rgba[i][ACOMP] & 0x3) );
535 }
536 }
537 break;
538 default:
539 gl_problem(ctx, "Bad type in pack_histogram");
540 }
541
542 #undef PACK_MACRO
543 }
544
545
546 /*
547 * Given an internalFormat token passed to glHistogram or glMinMax,
548 * return the corresponding base format.
549 * Return -1 if invalid token.
550 */
551 static GLint
552 base_histogram_format( GLenum format )
553 {
554 switch (format) {
555 case GL_ALPHA:
556 case GL_ALPHA4:
557 case GL_ALPHA8:
558 case GL_ALPHA12:
559 case GL_ALPHA16:
560 return GL_ALPHA;
561 case GL_LUMINANCE:
562 case GL_LUMINANCE4:
563 case GL_LUMINANCE8:
564 case GL_LUMINANCE12:
565 case GL_LUMINANCE16:
566 return GL_LUMINANCE;
567 case GL_LUMINANCE_ALPHA:
568 case GL_LUMINANCE4_ALPHA4:
569 case GL_LUMINANCE6_ALPHA2:
570 case GL_LUMINANCE8_ALPHA8:
571 case GL_LUMINANCE12_ALPHA4:
572 case GL_LUMINANCE12_ALPHA12:
573 case GL_LUMINANCE16_ALPHA16:
574 return GL_LUMINANCE_ALPHA;
575 case GL_RGB:
576 case GL_R3_G3_B2:
577 case GL_RGB4:
578 case GL_RGB5:
579 case GL_RGB8:
580 case GL_RGB10:
581 case GL_RGB12:
582 case GL_RGB16:
583 return GL_RGB;
584 case GL_RGBA:
585 case GL_RGBA2:
586 case GL_RGBA4:
587 case GL_RGB5_A1:
588 case GL_RGBA8:
589 case GL_RGB10_A2:
590 case GL_RGBA12:
591 case GL_RGBA16:
592 return GL_RGBA;
593 default:
594 return -1; /* error */
595 }
596 }
597
598
599 void
600 _mesa_GetMinmax(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
601 {
602 GET_CURRENT_CONTEXT(ctx);
603 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
604
605 if (!ctx->Extensions.EXT_histogram) {
606 gl_error(ctx, GL_INVALID_OPERATION, "glGetMinmax");
607 return;
608 }
609
610 if (target != GL_MINMAX) {
611 gl_error(ctx, GL_INVALID_ENUM, "glGetMinmax(target)");
612 return;
613 }
614
615 if (!_mesa_is_legal_format_and_type(format, type)) {
616 gl_error(ctx, GL_INVALID_OPERATION, "glGetMinmax(format or type)");
617 return;
618 }
619
620 if (type != GL_UNSIGNED_BYTE &&
621 type != GL_BYTE &&
622 type != GL_UNSIGNED_SHORT &&
623 type != GL_SHORT &&
624 type != GL_UNSIGNED_INT &&
625 type != GL_INT &&
626 type != GL_FLOAT) {
627 gl_error(ctx, GL_INVALID_ENUM, "glGetMinmax(type)");
628 return;
629 }
630
631 if (!values)
632 return;
633
634 {
635 GLfloat minmax[2][4];
636 minmax[0][RCOMP] = CLAMP(ctx->MinMax.Min[RCOMP], 0.0F, 1.0F);
637 minmax[0][GCOMP] = CLAMP(ctx->MinMax.Min[GCOMP], 0.0F, 1.0F);
638 minmax[0][BCOMP] = CLAMP(ctx->MinMax.Min[BCOMP], 0.0F, 1.0F);
639 minmax[0][ACOMP] = CLAMP(ctx->MinMax.Min[ACOMP], 0.0F, 1.0F);
640 minmax[1][RCOMP] = CLAMP(ctx->MinMax.Max[RCOMP], 0.0F, 1.0F);
641 minmax[1][GCOMP] = CLAMP(ctx->MinMax.Max[GCOMP], 0.0F, 1.0F);
642 minmax[1][BCOMP] = CLAMP(ctx->MinMax.Max[BCOMP], 0.0F, 1.0F);
643 minmax[1][ACOMP] = CLAMP(ctx->MinMax.Max[ACOMP], 0.0F, 1.0F);
644 _mesa_pack_float_rgba_span(ctx, 2, (CONST GLfloat (*)[4]) minmax,
645 format, type, values, &ctx->Pack, 0);
646 }
647
648 if (reset) {
649 _mesa_ResetMinmax(GL_MINMAX);
650 }
651 }
652
653
654 void
655 _mesa_GetHistogram(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
656 {
657 GET_CURRENT_CONTEXT(ctx);
658 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
659
660 if (!ctx->Extensions.EXT_histogram) {
661 gl_error(ctx, GL_INVALID_OPERATION, "glGetHistogram");
662 return;
663 }
664
665 if (target != GL_HISTOGRAM) {
666 gl_error(ctx, GL_INVALID_ENUM, "glGetHistogram(target)");
667 return;
668 }
669
670 if (!_mesa_is_legal_format_and_type(format, type)) {
671 gl_error(ctx, GL_INVALID_OPERATION, "glGetHistogram(format or type)");
672 return;
673 }
674
675 if (type != GL_UNSIGNED_BYTE &&
676 type != GL_BYTE &&
677 type != GL_UNSIGNED_SHORT &&
678 type != GL_SHORT &&
679 type != GL_UNSIGNED_INT &&
680 type != GL_INT &&
681 type != GL_FLOAT) {
682 gl_error(ctx, GL_INVALID_ENUM, "glGetHistogram(type)");
683 return;
684 }
685
686 if (!values)
687 return;
688
689 pack_histogram(ctx, ctx->Histogram.Width,
690 (CONST GLuint (*)[4]) ctx->Histogram.Count,
691 format, type, values, &ctx->Pack);
692
693 if (reset) {
694 GLuint i;
695 for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
696 ctx->Histogram.Count[i][0] = 0;
697 ctx->Histogram.Count[i][1] = 0;
698 ctx->Histogram.Count[i][2] = 0;
699 ctx->Histogram.Count[i][3] = 0;
700 }
701 }
702 }
703
704
705 void
706 _mesa_GetHistogramParameterfv(GLenum target, GLenum pname, GLfloat *params)
707 {
708 GET_CURRENT_CONTEXT(ctx);
709 ASSERT_OUTSIDE_BEGIN_END(ctx);
710
711 if (!ctx->Extensions.EXT_histogram) {
712 gl_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameterfv");
713 return;
714 }
715
716 if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
717 gl_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(target)");
718 return;
719 }
720
721 switch (pname) {
722 case GL_HISTOGRAM_WIDTH:
723 *params = (GLfloat) ctx->Histogram.Width;
724 break;
725 case GL_HISTOGRAM_FORMAT:
726 *params = (GLfloat) ctx->Histogram.Format;
727 break;
728 case GL_HISTOGRAM_RED_SIZE:
729 *params = (GLfloat) ctx->Histogram.RedSize;
730 break;
731 case GL_HISTOGRAM_GREEN_SIZE:
732 *params = (GLfloat) ctx->Histogram.GreenSize;
733 break;
734 case GL_HISTOGRAM_BLUE_SIZE:
735 *params = (GLfloat) ctx->Histogram.BlueSize;
736 break;
737 case GL_HISTOGRAM_ALPHA_SIZE:
738 *params = (GLfloat) ctx->Histogram.AlphaSize;
739 break;
740 case GL_HISTOGRAM_LUMINANCE_SIZE:
741 *params = (GLfloat) ctx->Histogram.LuminanceSize;
742 break;
743 case GL_HISTOGRAM_SINK:
744 *params = (GLfloat) ctx->Histogram.Sink;
745 break;
746 default:
747 gl_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(pname)");
748 }
749 }
750
751
752 void
753 _mesa_GetHistogramParameteriv(GLenum target, GLenum pname, GLint *params)
754 {
755 GET_CURRENT_CONTEXT(ctx);
756 ASSERT_OUTSIDE_BEGIN_END(ctx);
757
758 if (!ctx->Extensions.EXT_histogram) {
759 gl_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameteriv");
760 return;
761 }
762
763 if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
764 gl_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(target)");
765 return;
766 }
767
768 switch (pname) {
769 case GL_HISTOGRAM_WIDTH:
770 *params = (GLint) ctx->Histogram.Width;
771 break;
772 case GL_HISTOGRAM_FORMAT:
773 *params = (GLint) ctx->Histogram.Format;
774 break;
775 case GL_HISTOGRAM_RED_SIZE:
776 *params = (GLint) ctx->Histogram.RedSize;
777 break;
778 case GL_HISTOGRAM_GREEN_SIZE:
779 *params = (GLint) ctx->Histogram.GreenSize;
780 break;
781 case GL_HISTOGRAM_BLUE_SIZE:
782 *params = (GLint) ctx->Histogram.BlueSize;
783 break;
784 case GL_HISTOGRAM_ALPHA_SIZE:
785 *params = (GLint) ctx->Histogram.AlphaSize;
786 break;
787 case GL_HISTOGRAM_LUMINANCE_SIZE:
788 *params = (GLint) ctx->Histogram.LuminanceSize;
789 break;
790 case GL_HISTOGRAM_SINK:
791 *params = (GLint) ctx->Histogram.Sink;
792 break;
793 default:
794 gl_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(pname)");
795 }
796 }
797
798
799 void
800 _mesa_GetMinmaxParameterfv(GLenum target, GLenum pname, GLfloat *params)
801 {
802 GET_CURRENT_CONTEXT(ctx);
803 ASSERT_OUTSIDE_BEGIN_END(ctx);
804
805 if (!ctx->Extensions.EXT_histogram) {
806 gl_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameterfv");
807 return;
808 }
809 if (target != GL_MINMAX) {
810 gl_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameterfv(target)");
811 return;
812 }
813 if (pname == GL_MINMAX_FORMAT) {
814 *params = (GLfloat) ctx->MinMax.Format;
815 }
816 else if (pname == GL_MINMAX_SINK) {
817 *params = (GLfloat) ctx->MinMax.Sink;
818 }
819 else {
820 gl_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameterfv(pname)");
821 }
822 }
823
824
825 void
826 _mesa_GetMinmaxParameteriv(GLenum target, GLenum pname, GLint *params)
827 {
828 GET_CURRENT_CONTEXT(ctx);
829 ASSERT_OUTSIDE_BEGIN_END(ctx);
830
831 if (!ctx->Extensions.EXT_histogram) {
832 gl_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameteriv");
833 return;
834 }
835 if (target != GL_MINMAX) {
836 gl_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameteriv(target)");
837 return;
838 }
839 if (pname == GL_MINMAX_FORMAT) {
840 *params = (GLint) ctx->MinMax.Format;
841 }
842 else if (pname == GL_MINMAX_SINK) {
843 *params = (GLint) ctx->MinMax.Sink;
844 }
845 else {
846 gl_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameteriv(pname)");
847 }
848 }
849
850
851 void
852 _mesa_Histogram(GLenum target, GLsizei width, GLenum internalFormat, GLboolean sink)
853 {
854 GLuint i;
855 GLboolean error = GL_FALSE;
856 GET_CURRENT_CONTEXT(ctx);
857 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* sideeffects */
858
859 if (!ctx->Extensions.EXT_histogram) {
860 gl_error(ctx, GL_INVALID_OPERATION, "glHistogram");
861 return;
862 }
863
864 if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
865 gl_error(ctx, GL_INVALID_ENUM, "glHistogram(target)");
866 return;
867 }
868
869 if (width < 0 || width > HISTOGRAM_TABLE_SIZE) {
870 if (target == GL_PROXY_HISTOGRAM) {
871 error = GL_TRUE;
872 }
873 else {
874 if (width < 0)
875 gl_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
876 else
877 gl_error(ctx, GL_TABLE_TOO_LARGE, "glHistogram(width)");
878 return;
879 }
880 }
881
882 if (width != 0 && _mesa_bitcount(width) != 1) {
883 if (target == GL_PROXY_HISTOGRAM) {
884 error = GL_TRUE;
885 }
886 else {
887 gl_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
888 return;
889 }
890 }
891
892 if (base_histogram_format(internalFormat) < 0) {
893 if (target == GL_PROXY_HISTOGRAM) {
894 error = GL_TRUE;
895 }
896 else {
897 gl_error(ctx, GL_INVALID_ENUM, "glHistogram(internalFormat)");
898 return;
899 }
900 }
901
902 /* reset histograms */
903 for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
904 ctx->Histogram.Count[i][0] = 0;
905 ctx->Histogram.Count[i][1] = 0;
906 ctx->Histogram.Count[i][2] = 0;
907 ctx->Histogram.Count[i][3] = 0;
908 }
909
910 if (error) {
911 ctx->Histogram.Width = 0;
912 ctx->Histogram.Format = 0;
913 ctx->Histogram.RedSize = 0;
914 ctx->Histogram.GreenSize = 0;
915 ctx->Histogram.BlueSize = 0;
916 ctx->Histogram.AlphaSize = 0;
917 ctx->Histogram.LuminanceSize = 0;
918 }
919 else {
920 ctx->Histogram.Width = width;
921 ctx->Histogram.Format = internalFormat;
922 ctx->Histogram.Sink = sink;
923 ctx->Histogram.RedSize = 0xffffffff;
924 ctx->Histogram.GreenSize = 0xffffffff;
925 ctx->Histogram.BlueSize = 0xffffffff;
926 ctx->Histogram.AlphaSize = 0xffffffff;
927 ctx->Histogram.LuminanceSize = 0xffffffff;
928 }
929
930 ctx->NewState |= _NEW_PIXEL;
931 }
932
933
934 void
935 _mesa_Minmax(GLenum target, GLenum internalFormat, GLboolean sink)
936 {
937 GET_CURRENT_CONTEXT(ctx);
938 ASSERT_OUTSIDE_BEGIN_END(ctx);
939
940 if (!ctx->Extensions.EXT_histogram) {
941 gl_error(ctx, GL_INVALID_OPERATION, "glMinmax");
942 return;
943 }
944
945 if (target != GL_MINMAX) {
946 gl_error(ctx, GL_INVALID_ENUM, "glMinMax(target)");
947 return;
948 }
949
950 if (base_histogram_format(internalFormat) < 0) {
951 gl_error(ctx, GL_INVALID_ENUM, "glMinMax(internalFormat)");
952 return;
953 }
954
955 if (ctx->MinMax.Sink == sink)
956 return;
957 FLUSH_VERTICES(ctx, _NEW_PIXEL);
958 ctx->MinMax.Sink = sink;
959 }
960
961
962 void
963 _mesa_ResetHistogram(GLenum target)
964 {
965 GLuint i;
966 GET_CURRENT_CONTEXT(ctx);
967 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* sideeffects */
968
969 if (!ctx->Extensions.EXT_histogram) {
970 gl_error(ctx, GL_INVALID_OPERATION, "glResetHistogram");
971 return;
972 }
973
974 if (target != GL_HISTOGRAM) {
975 gl_error(ctx, GL_INVALID_ENUM, "glResetHistogram(target)");
976 return;
977 }
978
979 for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
980 ctx->Histogram.Count[i][0] = 0;
981 ctx->Histogram.Count[i][1] = 0;
982 ctx->Histogram.Count[i][2] = 0;
983 ctx->Histogram.Count[i][3] = 0;
984 }
985
986 ctx->NewState |= _NEW_PIXEL;
987 }
988
989
990 void
991 _mesa_ResetMinmax(GLenum target)
992 {
993 GET_CURRENT_CONTEXT(ctx);
994 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
995
996 if (!ctx->Extensions.EXT_histogram) {
997 gl_error(ctx, GL_INVALID_OPERATION, "glResetMinmax");
998 return;
999 }
1000
1001 if (target != GL_MINMAX) {
1002 gl_error(ctx, GL_INVALID_ENUM, "glResetMinMax(target)");
1003 return;
1004 }
1005
1006 ctx->MinMax.Min[RCOMP] = 1000; ctx->MinMax.Max[RCOMP] = -1000;
1007 ctx->MinMax.Min[GCOMP] = 1000; ctx->MinMax.Max[GCOMP] = -1000;
1008 ctx->MinMax.Min[BCOMP] = 1000; ctx->MinMax.Max[BCOMP] = -1000;
1009 ctx->MinMax.Min[ACOMP] = 1000; ctx->MinMax.Max[ACOMP] = -1000;
1010 ctx->NewState |= _NEW_PIXEL;
1011 }