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Merge commit 'origin/master' into gallium-0.2
[mesa.git] / src / mesa / main / texstore.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.3
4 *
5 * Copyright (C) 1999-2008 Brian Paul 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 * BRIAN PAUL 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 * Authors:
27 * Brian Paul
28 */
29
30 /**
31 * The GL texture image functions in teximage.c basically just do
32 * error checking and data structure allocation. They in turn call
33 * device driver functions which actually copy/convert/store the user's
34 * texture image data.
35 *
36 * However, most device drivers will be able to use the fallback functions
37 * in this file. That is, most drivers will have the following bit of
38 * code:
39 * ctx->Driver.TexImage1D = _mesa_store_teximage1d;
40 * ctx->Driver.TexImage2D = _mesa_store_teximage2d;
41 * ctx->Driver.TexImage3D = _mesa_store_teximage3d;
42 * etc...
43 *
44 * Texture image processing is actually kind of complicated. We have to do:
45 * Format/type conversions
46 * pixel unpacking
47 * pixel transfer (scale, bais, lookup, convolution!, etc)
48 *
49 * These functions can handle most everything, including processing full
50 * images and sub-images.
51 */
52
53
54 #include "glheader.h"
55 #include "bufferobj.h"
56 #include "colormac.h"
57 #include "context.h"
58 #if FEATURE_convolve
59 #include "convolve.h"
60 #endif
61 #include "image.h"
62 #include "macros.h"
63 #include "mipmap.h"
64 #include "imports.h"
65 #include "texcompress.h"
66 #include "texformat.h"
67 #include "teximage.h"
68 #include "texstore.h"
69 #include "enums.h"
70
71
72 enum {
73 ZERO = 4,
74 ONE = 5
75 };
76
77
78 /**
79 * Return GL_TRUE if the given image format is one that be converted
80 * to another format by swizzling.
81 */
82 static GLboolean
83 can_swizzle(GLenum logicalBaseFormat)
84 {
85 switch (logicalBaseFormat) {
86 case GL_RGBA:
87 case GL_RGB:
88 case GL_LUMINANCE_ALPHA:
89 case GL_INTENSITY:
90 case GL_ALPHA:
91 case GL_LUMINANCE:
92 case GL_RED:
93 case GL_GREEN:
94 case GL_BLUE:
95 case GL_BGR:
96 case GL_BGRA:
97 case GL_ABGR_EXT:
98 return GL_TRUE;
99 default:
100 return GL_FALSE;
101 }
102 }
103
104
105
106 enum {
107 IDX_LUMINANCE = 0,
108 IDX_ALPHA,
109 IDX_INTENSITY,
110 IDX_LUMINANCE_ALPHA,
111 IDX_RGB,
112 IDX_RGBA,
113 IDX_RED,
114 IDX_GREEN,
115 IDX_BLUE,
116 IDX_BGR,
117 IDX_BGRA,
118 IDX_ABGR,
119 MAX_IDX
120 };
121
122 #define MAP1(x) MAP4(x, ZERO, ZERO, ZERO)
123 #define MAP2(x,y) MAP4(x, y, ZERO, ZERO)
124 #define MAP3(x,y,z) MAP4(x, y, z, ZERO)
125 #define MAP4(x,y,z,w) { x, y, z, w, ZERO, ONE }
126
127
128 static const struct {
129 GLubyte format_idx;
130 GLubyte to_rgba[6];
131 GLubyte from_rgba[6];
132 } mappings[MAX_IDX] =
133 {
134 {
135 IDX_LUMINANCE,
136 MAP4(0,0,0,ONE),
137 MAP1(0)
138 },
139
140 {
141 IDX_ALPHA,
142 MAP4(ZERO, ZERO, ZERO, 0),
143 MAP1(3)
144 },
145
146 {
147 IDX_INTENSITY,
148 MAP4(0, 0, 0, 0),
149 MAP1(0),
150 },
151
152 {
153 IDX_LUMINANCE_ALPHA,
154 MAP4(0,0,0,1),
155 MAP2(0,3)
156 },
157
158 {
159 IDX_RGB,
160 MAP4(0,1,2,ONE),
161 MAP3(0,1,2)
162 },
163
164 {
165 IDX_RGBA,
166 MAP4(0,1,2,3),
167 MAP4(0,1,2,3),
168 },
169
170
171 {
172 IDX_RED,
173 MAP4(0, ZERO, ZERO, ONE),
174 MAP1(0),
175 },
176
177 {
178 IDX_GREEN,
179 MAP4(ZERO, 0, ZERO, ONE),
180 MAP1(1),
181 },
182
183 {
184 IDX_BLUE,
185 MAP4(ZERO, ZERO, 0, ONE),
186 MAP1(2),
187 },
188
189 {
190 IDX_BGR,
191 MAP4(2,1,0,ONE),
192 MAP3(2,1,0)
193 },
194
195 {
196 IDX_BGRA,
197 MAP4(2,1,0,3),
198 MAP4(2,1,0,3)
199 },
200
201 {
202 IDX_ABGR,
203 MAP4(3,2,1,0),
204 MAP4(3,2,1,0)
205 },
206 };
207
208
209
210 /**
211 * Convert a GL image format enum to an IDX_* value (see above).
212 */
213 static int
214 get_map_idx(GLenum value)
215 {
216 switch (value) {
217 case GL_LUMINANCE: return IDX_LUMINANCE;
218 case GL_ALPHA: return IDX_ALPHA;
219 case GL_INTENSITY: return IDX_INTENSITY;
220 case GL_LUMINANCE_ALPHA: return IDX_LUMINANCE_ALPHA;
221 case GL_RGB: return IDX_RGB;
222 case GL_RGBA: return IDX_RGBA;
223 case GL_RED: return IDX_RED;
224 case GL_GREEN: return IDX_GREEN;
225 case GL_BLUE: return IDX_BLUE;
226 case GL_BGR: return IDX_BGR;
227 case GL_BGRA: return IDX_BGRA;
228 case GL_ABGR_EXT: return IDX_ABGR;
229 default:
230 _mesa_problem(NULL, "Unexpected inFormat");
231 return 0;
232 }
233 }
234
235
236 /**
237 * When promoting texture formats (see below) we need to compute the
238 * mapping of dest components back to source components.
239 * This function does that.
240 * \param inFormat the incoming format of the texture
241 * \param outFormat the final texture format
242 * \return map[6] a full 6-component map
243 */
244 static void
245 compute_component_mapping(GLenum inFormat, GLenum outFormat,
246 GLubyte *map)
247 {
248 const int inFmt = get_map_idx(inFormat);
249 const int outFmt = get_map_idx(outFormat);
250 const GLubyte *in2rgba = mappings[inFmt].to_rgba;
251 const GLubyte *rgba2out = mappings[outFmt].from_rgba;
252 int i;
253
254 for (i = 0; i < 4; i++)
255 map[i] = in2rgba[rgba2out[i]];
256
257 map[ZERO] = ZERO;
258 map[ONE] = ONE;
259
260 /*
261 _mesa_printf("from %x/%s to %x/%s map %d %d %d %d %d %d\n",
262 inFormat, _mesa_lookup_enum_by_nr(inFormat),
263 outFormat, _mesa_lookup_enum_by_nr(outFormat),
264 map[0],
265 map[1],
266 map[2],
267 map[3],
268 map[4],
269 map[5]);
270 */
271 }
272
273
274 #if !FEATURE_convolve
275 static void
276 _mesa_adjust_image_for_convolution(GLcontext *ctx, GLuint dims,
277 GLsizei *srcWidth, GLsizei *srcHeight)
278 {
279 /* no-op */
280 }
281 #endif
282
283
284 /**
285 * Make a temporary (color) texture image with GLfloat components.
286 * Apply all needed pixel unpacking and pixel transfer operations.
287 * Note that there are both logicalBaseFormat and textureBaseFormat parameters.
288 * Suppose the user specifies GL_LUMINANCE as the internal texture format
289 * but the graphics hardware doesn't support luminance textures. So, might
290 * use an RGB hardware format instead.
291 * If logicalBaseFormat != textureBaseFormat we have some extra work to do.
292 *
293 * \param ctx the rendering context
294 * \param dims image dimensions: 1, 2 or 3
295 * \param logicalBaseFormat basic texture derived from the user's
296 * internal texture format value
297 * \param textureBaseFormat the actual basic format of the texture
298 * \param srcWidth source image width
299 * \param srcHeight source image height
300 * \param srcDepth source image depth
301 * \param srcFormat source image format
302 * \param srcType source image type
303 * \param srcAddr source image address
304 * \param srcPacking source image pixel packing
305 * \return resulting image with format = textureBaseFormat and type = GLfloat.
306 */
307 static GLfloat *
308 make_temp_float_image(GLcontext *ctx, GLuint dims,
309 GLenum logicalBaseFormat,
310 GLenum textureBaseFormat,
311 GLint srcWidth, GLint srcHeight, GLint srcDepth,
312 GLenum srcFormat, GLenum srcType,
313 const GLvoid *srcAddr,
314 const struct gl_pixelstore_attrib *srcPacking)
315 {
316 GLuint transferOps = ctx->_ImageTransferState;
317 GLfloat *tempImage;
318
319 ASSERT(dims >= 1 && dims <= 3);
320
321 ASSERT(logicalBaseFormat == GL_RGBA ||
322 logicalBaseFormat == GL_RGB ||
323 logicalBaseFormat == GL_LUMINANCE_ALPHA ||
324 logicalBaseFormat == GL_LUMINANCE ||
325 logicalBaseFormat == GL_ALPHA ||
326 logicalBaseFormat == GL_INTENSITY ||
327 logicalBaseFormat == GL_COLOR_INDEX ||
328 logicalBaseFormat == GL_DEPTH_COMPONENT);
329
330 ASSERT(textureBaseFormat == GL_RGBA ||
331 textureBaseFormat == GL_RGB ||
332 textureBaseFormat == GL_LUMINANCE_ALPHA ||
333 textureBaseFormat == GL_LUMINANCE ||
334 textureBaseFormat == GL_ALPHA ||
335 textureBaseFormat == GL_INTENSITY ||
336 textureBaseFormat == GL_COLOR_INDEX ||
337 textureBaseFormat == GL_DEPTH_COMPONENT);
338
339 /* conventional color image */
340
341 if ((dims == 1 && ctx->Pixel.Convolution1DEnabled) ||
342 (dims >= 2 && ctx->Pixel.Convolution2DEnabled) ||
343 (dims >= 2 && ctx->Pixel.Separable2DEnabled)) {
344 /* need image convolution */
345 const GLuint preConvTransferOps
346 = (transferOps & IMAGE_PRE_CONVOLUTION_BITS) | IMAGE_CLAMP_BIT;
347 const GLuint postConvTransferOps
348 = (transferOps & IMAGE_POST_CONVOLUTION_BITS) | IMAGE_CLAMP_BIT;
349 GLint img, row;
350 GLint convWidth, convHeight;
351 GLfloat *convImage;
352
353 /* pre-convolution image buffer (3D) */
354 tempImage = (GLfloat *) _mesa_malloc(srcWidth * srcHeight * srcDepth
355 * 4 * sizeof(GLfloat));
356 if (!tempImage)
357 return NULL;
358
359 /* post-convolution image buffer (2D) */
360 convImage = (GLfloat *) _mesa_malloc(srcWidth * srcHeight
361 * 4 * sizeof(GLfloat));
362 if (!convImage) {
363 _mesa_free(tempImage);
364 return NULL;
365 }
366
367 /* loop over 3D image slices */
368 for (img = 0; img < srcDepth; img++) {
369 GLfloat *dst = tempImage + img * (srcWidth * srcHeight * 4);
370
371 /* unpack and do transfer ops up to convolution */
372 for (row = 0; row < srcHeight; row++) {
373 const GLvoid *src = _mesa_image_address(dims, srcPacking,
374 srcAddr, srcWidth, srcHeight,
375 srcFormat, srcType, img, row, 0);
376 _mesa_unpack_color_span_float(ctx, srcWidth, GL_RGBA, dst,
377 srcFormat, srcType, src,
378 srcPacking,
379 preConvTransferOps);
380 dst += srcWidth * 4;
381 }
382
383 /* size after optional convolution */
384 convWidth = srcWidth;
385 convHeight = srcHeight;
386
387 #if FEATURE_convolve
388 /* do convolution */
389 {
390 GLfloat *src = tempImage + img * (srcWidth * srcHeight * 4);
391 if (dims == 1) {
392 ASSERT(ctx->Pixel.Convolution1DEnabled);
393 _mesa_convolve_1d_image(ctx, &convWidth, src, convImage);
394 }
395 else {
396 if (ctx->Pixel.Convolution2DEnabled) {
397 _mesa_convolve_2d_image(ctx, &convWidth, &convHeight,
398 src, convImage);
399 }
400 else {
401 ASSERT(ctx->Pixel.Separable2DEnabled);
402 _mesa_convolve_sep_image(ctx, &convWidth, &convHeight,
403 src, convImage);
404 }
405 }
406 }
407 #endif
408 /* do post-convolution transfer and pack into tempImage */
409 {
410 const GLint logComponents
411 = _mesa_components_in_format(logicalBaseFormat);
412 const GLfloat *src = convImage;
413 GLfloat *dst = tempImage + img * (convWidth * convHeight * 4);
414 for (row = 0; row < convHeight; row++) {
415 _mesa_pack_rgba_span_float(ctx, convWidth,
416 (GLfloat (*)[4]) src,
417 logicalBaseFormat, GL_FLOAT,
418 dst, &ctx->DefaultPacking,
419 postConvTransferOps);
420 src += convWidth * 4;
421 dst += convWidth * logComponents;
422 }
423 }
424 } /* loop over 3D image slices */
425
426 _mesa_free(convImage);
427
428 /* might need these below */
429 srcWidth = convWidth;
430 srcHeight = convHeight;
431 }
432 else {
433 /* no convolution */
434 const GLint components = _mesa_components_in_format(logicalBaseFormat);
435 const GLint srcStride = _mesa_image_row_stride(srcPacking,
436 srcWidth, srcFormat, srcType);
437 GLfloat *dst;
438 GLint img, row;
439
440 tempImage = (GLfloat *) _mesa_malloc(srcWidth * srcHeight * srcDepth
441 * components * sizeof(GLfloat));
442 if (!tempImage)
443 return NULL;
444
445 dst = tempImage;
446 for (img = 0; img < srcDepth; img++) {
447 const GLubyte *src
448 = (const GLubyte *) _mesa_image_address(dims, srcPacking, srcAddr,
449 srcWidth, srcHeight,
450 srcFormat, srcType,
451 img, 0, 0);
452 for (row = 0; row < srcHeight; row++) {
453 _mesa_unpack_color_span_float(ctx, srcWidth, logicalBaseFormat,
454 dst, srcFormat, srcType, src,
455 srcPacking, transferOps);
456 dst += srcWidth * components;
457 src += srcStride;
458 }
459 }
460 }
461
462 if (logicalBaseFormat != textureBaseFormat) {
463 /* more work */
464 GLint texComponents = _mesa_components_in_format(textureBaseFormat);
465 GLint logComponents = _mesa_components_in_format(logicalBaseFormat);
466 GLfloat *newImage;
467 GLint i, n;
468 GLubyte map[6];
469
470 /* we only promote up to RGB, RGBA and LUMINANCE_ALPHA formats for now */
471 ASSERT(textureBaseFormat == GL_RGB || textureBaseFormat == GL_RGBA ||
472 textureBaseFormat == GL_LUMINANCE_ALPHA);
473
474 /* The actual texture format should have at least as many components
475 * as the logical texture format.
476 */
477 ASSERT(texComponents >= logComponents);
478
479 newImage = (GLfloat *) _mesa_malloc(srcWidth * srcHeight * srcDepth
480 * texComponents * sizeof(GLfloat));
481 if (!newImage) {
482 _mesa_free(tempImage);
483 return NULL;
484 }
485
486 compute_component_mapping(logicalBaseFormat, textureBaseFormat, map);
487
488 n = srcWidth * srcHeight * srcDepth;
489 for (i = 0; i < n; i++) {
490 GLint k;
491 for (k = 0; k < texComponents; k++) {
492 GLint j = map[k];
493 if (j == ZERO)
494 newImage[i * texComponents + k] = 0.0F;
495 else if (j == ONE)
496 newImage[i * texComponents + k] = 1.0F;
497 else
498 newImage[i * texComponents + k] = tempImage[i * logComponents + j];
499 }
500 }
501
502 _mesa_free(tempImage);
503 tempImage = newImage;
504 }
505
506 return tempImage;
507 }
508
509
510 /**
511 * Make a temporary (color) texture image with GLchan components.
512 * Apply all needed pixel unpacking and pixel transfer operations.
513 * Note that there are both logicalBaseFormat and textureBaseFormat parameters.
514 * Suppose the user specifies GL_LUMINANCE as the internal texture format
515 * but the graphics hardware doesn't support luminance textures. So, might
516 * use an RGB hardware format instead.
517 * If logicalBaseFormat != textureBaseFormat we have some extra work to do.
518 *
519 * \param ctx the rendering context
520 * \param dims image dimensions: 1, 2 or 3
521 * \param logicalBaseFormat basic texture derived from the user's
522 * internal texture format value
523 * \param textureBaseFormat the actual basic format of the texture
524 * \param srcWidth source image width
525 * \param srcHeight source image height
526 * \param srcDepth source image depth
527 * \param srcFormat source image format
528 * \param srcType source image type
529 * \param srcAddr source image address
530 * \param srcPacking source image pixel packing
531 * \return resulting image with format = textureBaseFormat and type = GLchan.
532 */
533 GLchan *
534 _mesa_make_temp_chan_image(GLcontext *ctx, GLuint dims,
535 GLenum logicalBaseFormat,
536 GLenum textureBaseFormat,
537 GLint srcWidth, GLint srcHeight, GLint srcDepth,
538 GLenum srcFormat, GLenum srcType,
539 const GLvoid *srcAddr,
540 const struct gl_pixelstore_attrib *srcPacking)
541 {
542 GLuint transferOps = ctx->_ImageTransferState;
543 const GLint components = _mesa_components_in_format(logicalBaseFormat);
544 GLboolean freeSrcImage = GL_FALSE;
545 GLint img, row;
546 GLchan *tempImage, *dst;
547
548 ASSERT(dims >= 1 && dims <= 3);
549
550 ASSERT(logicalBaseFormat == GL_RGBA ||
551 logicalBaseFormat == GL_RGB ||
552 logicalBaseFormat == GL_LUMINANCE_ALPHA ||
553 logicalBaseFormat == GL_LUMINANCE ||
554 logicalBaseFormat == GL_ALPHA ||
555 logicalBaseFormat == GL_INTENSITY);
556
557 ASSERT(textureBaseFormat == GL_RGBA ||
558 textureBaseFormat == GL_RGB ||
559 textureBaseFormat == GL_LUMINANCE_ALPHA ||
560 textureBaseFormat == GL_LUMINANCE ||
561 textureBaseFormat == GL_ALPHA ||
562 textureBaseFormat == GL_INTENSITY);
563
564 #if FEATURE_convolve
565 if ((dims == 1 && ctx->Pixel.Convolution1DEnabled) ||
566 (dims >= 2 && ctx->Pixel.Convolution2DEnabled) ||
567 (dims >= 2 && ctx->Pixel.Separable2DEnabled)) {
568 /* get convolved image */
569 GLfloat *convImage = make_temp_float_image(ctx, dims,
570 logicalBaseFormat,
571 logicalBaseFormat,
572 srcWidth, srcHeight, srcDepth,
573 srcFormat, srcType,
574 srcAddr, srcPacking);
575 if (!convImage)
576 return NULL;
577 /* the convolved image is our new source image */
578 srcAddr = convImage;
579 srcFormat = logicalBaseFormat;
580 srcType = GL_FLOAT;
581 srcPacking = &ctx->DefaultPacking;
582 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
583 transferOps = 0;
584 freeSrcImage = GL_TRUE;
585 }
586 #endif
587
588 /* unpack and transfer the source image */
589 tempImage = (GLchan *) _mesa_malloc(srcWidth * srcHeight * srcDepth
590 * components * sizeof(GLchan));
591 if (!tempImage)
592 return NULL;
593
594 dst = tempImage;
595 for (img = 0; img < srcDepth; img++) {
596 const GLint srcStride = _mesa_image_row_stride(srcPacking,
597 srcWidth, srcFormat,
598 srcType);
599 const GLubyte *src
600 = (const GLubyte *) _mesa_image_address(dims, srcPacking, srcAddr,
601 srcWidth, srcHeight,
602 srcFormat, srcType,
603 img, 0, 0);
604 for (row = 0; row < srcHeight; row++) {
605 _mesa_unpack_color_span_chan(ctx, srcWidth, logicalBaseFormat, dst,
606 srcFormat, srcType, src, srcPacking,
607 transferOps);
608 dst += srcWidth * components;
609 src += srcStride;
610 }
611 }
612
613 /* If we made a temporary image for convolution, free it here */
614 if (freeSrcImage) {
615 _mesa_free((void *) srcAddr);
616 }
617
618 if (logicalBaseFormat != textureBaseFormat) {
619 /* one more conversion step */
620 GLint texComponents = _mesa_components_in_format(textureBaseFormat);
621 GLint logComponents = _mesa_components_in_format(logicalBaseFormat);
622 GLchan *newImage;
623 GLint i, n;
624 GLubyte map[6];
625
626 /* we only promote up to RGB, RGBA and LUMINANCE_ALPHA formats for now */
627 ASSERT(textureBaseFormat == GL_RGB || textureBaseFormat == GL_RGBA ||
628 textureBaseFormat == GL_LUMINANCE_ALPHA);
629
630 /* The actual texture format should have at least as many components
631 * as the logical texture format.
632 */
633 ASSERT(texComponents >= logComponents);
634
635 newImage = (GLchan *) _mesa_malloc(srcWidth * srcHeight * srcDepth
636 * texComponents * sizeof(GLchan));
637 if (!newImage) {
638 _mesa_free(tempImage);
639 return NULL;
640 }
641
642 compute_component_mapping(logicalBaseFormat, textureBaseFormat, map);
643
644 n = srcWidth * srcHeight * srcDepth;
645 for (i = 0; i < n; i++) {
646 GLint k;
647 for (k = 0; k < texComponents; k++) {
648 GLint j = map[k];
649 if (j == ZERO)
650 newImage[i * texComponents + k] = 0;
651 else if (j == ONE)
652 newImage[i * texComponents + k] = CHAN_MAX;
653 else
654 newImage[i * texComponents + k] = tempImage[i * logComponents + j];
655 }
656 }
657
658 _mesa_free(tempImage);
659 tempImage = newImage;
660 }
661
662 return tempImage;
663 }
664
665
666 /**
667 * Copy GLubyte pixels from <src> to <dst> with swizzling.
668 * \param dst destination pixels
669 * \param dstComponents number of color components in destination pixels
670 * \param src source pixels
671 * \param srcComponents number of color components in source pixels
672 * \param map the swizzle mapping. map[X] says where to find the X component
673 * in the source image's pixels. For example, if the source image
674 * is GL_BGRA and X = red, map[0] yields 2.
675 * \param count number of pixels to copy/swizzle.
676 */
677 static void
678 swizzle_copy(GLubyte *dst, GLuint dstComponents, const GLubyte *src,
679 GLuint srcComponents, const GLubyte *map, GLuint count)
680 {
681 #define SWZ_CPY(dst, src, count, dstComps, srcComps) \
682 do { \
683 GLuint i; \
684 for (i = 0; i < count; i++) { \
685 GLuint j; \
686 if (srcComps == 4) { \
687 COPY_4UBV(tmp, src); \
688 } \
689 else { \
690 for (j = 0; j < srcComps; j++) { \
691 tmp[j] = src[j]; \
692 } \
693 } \
694 src += srcComps; \
695 for (j = 0; j < dstComps; j++) { \
696 dst[j] = tmp[map[j]]; \
697 } \
698 dst += dstComps; \
699 } \
700 } while (0)
701
702 GLubyte tmp[6];
703
704 tmp[ZERO] = 0x0;
705 tmp[ONE] = 0xff;
706
707 ASSERT(srcComponents <= 4);
708 ASSERT(dstComponents <= 4);
709
710 switch (dstComponents) {
711 case 4:
712 switch (srcComponents) {
713 case 4:
714 SWZ_CPY(dst, src, count, 4, 4);
715 break;
716 case 3:
717 SWZ_CPY(dst, src, count, 4, 3);
718 break;
719 case 2:
720 SWZ_CPY(dst, src, count, 4, 2);
721 break;
722 case 1:
723 SWZ_CPY(dst, src, count, 4, 1);
724 break;
725 default:
726 ;
727 }
728 break;
729 case 3:
730 switch (srcComponents) {
731 case 4:
732 SWZ_CPY(dst, src, count, 3, 4);
733 break;
734 case 3:
735 SWZ_CPY(dst, src, count, 3, 3);
736 break;
737 case 2:
738 SWZ_CPY(dst, src, count, 3, 2);
739 break;
740 case 1:
741 SWZ_CPY(dst, src, count, 3, 1);
742 break;
743 default:
744 ;
745 }
746 break;
747 case 2:
748 switch (srcComponents) {
749 case 4:
750 SWZ_CPY(dst, src, count, 2, 4);
751 break;
752 case 3:
753 SWZ_CPY(dst, src, count, 2, 3);
754 break;
755 case 2:
756 SWZ_CPY(dst, src, count, 2, 2);
757 break;
758 case 1:
759 SWZ_CPY(dst, src, count, 2, 1);
760 break;
761 default:
762 ;
763 }
764 break;
765 case 1:
766 switch (srcComponents) {
767 case 4:
768 SWZ_CPY(dst, src, count, 1, 4);
769 break;
770 case 3:
771 SWZ_CPY(dst, src, count, 1, 3);
772 break;
773 case 2:
774 SWZ_CPY(dst, src, count, 1, 2);
775 break;
776 case 1:
777 SWZ_CPY(dst, src, count, 1, 1);
778 break;
779 default:
780 ;
781 }
782 break;
783 default:
784 ;
785 }
786 #undef SWZ_CPY
787 }
788
789
790
791 static const GLubyte map_identity[6] = { 0, 1, 2, 3, ZERO, ONE };
792 static const GLubyte map_3210[6] = { 3, 2, 1, 0, ZERO, ONE };
793
794 /* Deal with the _REV input types:
795 */
796 static const GLubyte *
797 type_mapping( GLenum srcType )
798 {
799 switch (srcType) {
800 case GL_UNSIGNED_BYTE:
801 return map_identity;
802 case GL_UNSIGNED_INT_8_8_8_8:
803 return _mesa_little_endian() ? map_3210 : map_identity;
804 case GL_UNSIGNED_INT_8_8_8_8_REV:
805 return _mesa_little_endian() ? map_identity : map_3210;
806 default:
807 return NULL;
808 }
809 }
810
811 /* Mapping required if input type is
812 */
813 static const GLubyte *
814 byteswap_mapping( GLboolean swapBytes,
815 GLenum srcType )
816 {
817 if (!swapBytes)
818 return map_identity;
819
820 switch (srcType) {
821 case GL_UNSIGNED_BYTE:
822 return map_identity;
823 case GL_UNSIGNED_INT_8_8_8_8:
824 case GL_UNSIGNED_INT_8_8_8_8_REV:
825 return map_3210;
826 default:
827 return NULL;
828 }
829 }
830
831
832
833 /**
834 * Transfer a GLubyte texture image with component swizzling.
835 */
836 static void
837 _mesa_swizzle_ubyte_image(GLcontext *ctx,
838 GLuint dimensions,
839 GLenum srcFormat,
840 GLenum srcType,
841
842 GLenum baseInternalFormat,
843
844 const GLubyte *rgba2dst,
845 GLuint dstComponents,
846
847 GLvoid *dstAddr,
848 GLint dstXoffset, GLint dstYoffset, GLint dstZoffset,
849 GLint dstRowStride,
850 const GLuint *dstImageOffsets,
851
852 GLint srcWidth, GLint srcHeight, GLint srcDepth,
853 const GLvoid *srcAddr,
854 const struct gl_pixelstore_attrib *srcPacking )
855 {
856 GLint srcComponents = _mesa_components_in_format(srcFormat);
857 const GLubyte *srctype2ubyte, *swap;
858 GLubyte map[4], src2base[6], base2rgba[6];
859 GLint i;
860 const GLint srcRowStride =
861 _mesa_image_row_stride(srcPacking, srcWidth,
862 srcFormat, GL_UNSIGNED_BYTE);
863 const GLint srcImageStride
864 = _mesa_image_image_stride(srcPacking, srcWidth, srcHeight, srcFormat,
865 GL_UNSIGNED_BYTE);
866 const GLubyte *srcImage
867 = (const GLubyte *) _mesa_image_address(dimensions, srcPacking, srcAddr,
868 srcWidth, srcHeight, srcFormat,
869 GL_UNSIGNED_BYTE, 0, 0, 0);
870
871 (void) ctx;
872
873 /* Translate from src->baseInternal->GL_RGBA->dst. This will
874 * correctly deal with RGBA->RGB->RGBA conversions where the final
875 * A value must be 0xff regardless of the incoming alpha values.
876 */
877 compute_component_mapping(srcFormat, baseInternalFormat, src2base);
878 compute_component_mapping(baseInternalFormat, GL_RGBA, base2rgba);
879 swap = byteswap_mapping(srcPacking->SwapBytes, srcType);
880 srctype2ubyte = type_mapping(srcType);
881
882
883 for (i = 0; i < 4; i++)
884 map[i] = srctype2ubyte[swap[src2base[base2rgba[rgba2dst[i]]]]];
885
886 /* _mesa_printf("map %d %d %d %d\n", map[0], map[1], map[2], map[3]); */
887
888 if (srcComponents == dstComponents &&
889 srcRowStride == dstRowStride &&
890 srcRowStride == srcWidth * srcComponents &&
891 dimensions < 3) {
892 /* 1 and 2D images only */
893 GLubyte *dstImage = (GLubyte *) dstAddr
894 + dstYoffset * dstRowStride
895 + dstXoffset * dstComponents;
896 swizzle_copy(dstImage, dstComponents, srcImage, srcComponents, map,
897 srcWidth * srcHeight);
898 }
899 else {
900 GLint img, row;
901 for (img = 0; img < srcDepth; img++) {
902 const GLubyte *srcRow = srcImage;
903 GLubyte *dstRow = (GLubyte *) dstAddr
904 + dstImageOffsets[dstZoffset + img] * dstComponents
905 + dstYoffset * dstRowStride
906 + dstXoffset * dstComponents;
907 for (row = 0; row < srcHeight; row++) {
908 swizzle_copy(dstRow, dstComponents, srcRow, srcComponents, map, srcWidth);
909 dstRow += dstRowStride;
910 srcRow += srcRowStride;
911 }
912 srcImage += srcImageStride;
913 }
914 }
915 }
916
917
918 /**
919 * Teximage storage routine for when a simple memcpy will do.
920 * No pixel transfer operations or special texel encodings allowed.
921 * 1D, 2D and 3D images supported.
922 */
923 static void
924 memcpy_texture(GLcontext *ctx,
925 GLuint dimensions,
926 const struct gl_texture_format *dstFormat,
927 GLvoid *dstAddr,
928 GLint dstXoffset, GLint dstYoffset, GLint dstZoffset,
929 GLint dstRowStride,
930 const GLuint *dstImageOffsets,
931 GLint srcWidth, GLint srcHeight, GLint srcDepth,
932 GLenum srcFormat, GLenum srcType,
933 const GLvoid *srcAddr,
934 const struct gl_pixelstore_attrib *srcPacking)
935 {
936 const GLint srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth,
937 srcFormat, srcType);
938 const GLint srcImageStride = _mesa_image_image_stride(srcPacking,
939 srcWidth, srcHeight, srcFormat, srcType);
940 const GLubyte *srcImage = (const GLubyte *) _mesa_image_address(dimensions,
941 srcPacking, srcAddr, srcWidth, srcHeight, srcFormat, srcType, 0, 0, 0);
942 const GLint bytesPerRow = srcWidth * dstFormat->TexelBytes;
943
944 #if 0
945 /* XXX update/re-enable for dstImageOffsets array */
946 const GLint bytesPerImage = srcHeight * bytesPerRow;
947 const GLint bytesPerTexture = srcDepth * bytesPerImage;
948 GLubyte *dstImage = (GLubyte *) dstAddr
949 + dstZoffset * dstImageStride
950 + dstYoffset * dstRowStride
951 + dstXoffset * dstFormat->TexelBytes;
952
953 if (dstRowStride == srcRowStride &&
954 dstRowStride == bytesPerRow &&
955 ((dstImageStride == srcImageStride &&
956 dstImageStride == bytesPerImage) ||
957 (srcDepth == 1))) {
958 /* one big memcpy */
959 ctx->Driver.TextureMemCpy(dstImage, srcImage, bytesPerTexture);
960 }
961 else
962 {
963 GLint img, row;
964 for (img = 0; img < srcDepth; img++) {
965 const GLubyte *srcRow = srcImage;
966 GLubyte *dstRow = dstImage;
967 for (row = 0; row < srcHeight; row++) {
968 ctx->Driver.TextureMemCpy(dstRow, srcRow, bytesPerRow);
969 dstRow += dstRowStride;
970 srcRow += srcRowStride;
971 }
972 srcImage += srcImageStride;
973 dstImage += dstImageStride;
974 }
975 }
976 #endif
977
978 GLint img, row;
979 for (img = 0; img < srcDepth; img++) {
980 const GLubyte *srcRow = srcImage;
981 GLubyte *dstRow = (GLubyte *) dstAddr
982 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
983 + dstYoffset * dstRowStride
984 + dstXoffset * dstFormat->TexelBytes;
985 for (row = 0; row < srcHeight; row++) {
986 ctx->Driver.TextureMemCpy(dstRow, srcRow, bytesPerRow);
987 dstRow += dstRowStride;
988 srcRow += srcRowStride;
989 }
990 srcImage += srcImageStride;
991 }
992 }
993
994
995
996 /**
997 * Store an image in any of the formats:
998 * _mesa_texformat_rgba
999 * _mesa_texformat_rgb
1000 * _mesa_texformat_alpha
1001 * _mesa_texformat_luminance
1002 * _mesa_texformat_luminance_alpha
1003 * _mesa_texformat_intensity
1004 *
1005 */
1006 GLboolean
1007 _mesa_texstore_rgba(TEXSTORE_PARAMS)
1008 {
1009 const GLint components = _mesa_components_in_format(baseInternalFormat);
1010
1011 ASSERT(dstFormat == &_mesa_texformat_rgba ||
1012 dstFormat == &_mesa_texformat_rgb ||
1013 dstFormat == &_mesa_texformat_alpha ||
1014 dstFormat == &_mesa_texformat_luminance ||
1015 dstFormat == &_mesa_texformat_luminance_alpha ||
1016 dstFormat == &_mesa_texformat_intensity);
1017 ASSERT(baseInternalFormat == GL_RGBA ||
1018 baseInternalFormat == GL_RGB ||
1019 baseInternalFormat == GL_ALPHA ||
1020 baseInternalFormat == GL_LUMINANCE ||
1021 baseInternalFormat == GL_LUMINANCE_ALPHA ||
1022 baseInternalFormat == GL_INTENSITY);
1023 ASSERT(dstFormat->TexelBytes == components * sizeof(GLchan));
1024
1025 if (!ctx->_ImageTransferState &&
1026 !srcPacking->SwapBytes &&
1027 baseInternalFormat == srcFormat &&
1028 srcType == CHAN_TYPE) {
1029 /* simple memcpy path */
1030 memcpy_texture(ctx, dims,
1031 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1032 dstRowStride,
1033 dstImageOffsets,
1034 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1035 srcAddr, srcPacking);
1036 }
1037 else if (!ctx->_ImageTransferState &&
1038 !srcPacking->SwapBytes &&
1039 dstFormat == &_mesa_texformat_rgb &&
1040 srcFormat == GL_RGBA &&
1041 srcType == CHAN_TYPE) {
1042 /* extract RGB from RGBA */
1043 GLint img, row, col;
1044 for (img = 0; img < srcDepth; img++) {
1045 GLchan *dstImage = (GLchan *)
1046 ((GLubyte *) dstAddr
1047 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1048 + dstYoffset * dstRowStride
1049 + dstXoffset * dstFormat->TexelBytes);
1050
1051 const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
1052 srcWidth, srcFormat, srcType);
1053 GLchan *srcRow = (GLchan *) _mesa_image_address(dims, srcPacking,
1054 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0);
1055 GLchan *dstRow = dstImage;
1056 for (row = 0; row < srcHeight; row++) {
1057 for (col = 0; col < srcWidth; col++) {
1058 dstRow[col * 3 + RCOMP] = srcRow[col * 4 + RCOMP];
1059 dstRow[col * 3 + GCOMP] = srcRow[col * 4 + GCOMP];
1060 dstRow[col * 3 + BCOMP] = srcRow[col * 4 + BCOMP];
1061 }
1062 dstRow += dstRowStride / sizeof(GLchan);
1063 srcRow = (GLchan *) ((GLubyte *) srcRow + srcRowStride);
1064 }
1065 }
1066 }
1067 else if (!ctx->_ImageTransferState &&
1068 CHAN_TYPE == GL_UNSIGNED_BYTE &&
1069 (srcType == GL_UNSIGNED_BYTE ||
1070 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
1071 srcType == GL_UNSIGNED_INT_8_8_8_8_REV) &&
1072 can_swizzle(baseInternalFormat) &&
1073 can_swizzle(srcFormat)) {
1074
1075 const GLubyte *dstmap;
1076 GLuint components;
1077
1078 /* dstmap - how to swizzle from RGBA to dst format:
1079 */
1080 if (dstFormat == &_mesa_texformat_rgba) {
1081 dstmap = mappings[IDX_RGBA].from_rgba;
1082 components = 4;
1083 }
1084 else if (dstFormat == &_mesa_texformat_rgb) {
1085 dstmap = mappings[IDX_RGB].from_rgba;
1086 components = 3;
1087 }
1088 else if (dstFormat == &_mesa_texformat_alpha) {
1089 dstmap = mappings[IDX_ALPHA].from_rgba;
1090 components = 1;
1091 }
1092 else if (dstFormat == &_mesa_texformat_luminance) {
1093 dstmap = mappings[IDX_LUMINANCE].from_rgba;
1094 components = 1;
1095 }
1096 else if (dstFormat == &_mesa_texformat_luminance_alpha) {
1097 dstmap = mappings[IDX_LUMINANCE_ALPHA].from_rgba;
1098 components = 2;
1099 }
1100 else if (dstFormat == &_mesa_texformat_intensity) {
1101 dstmap = mappings[IDX_INTENSITY].from_rgba;
1102 components = 1;
1103 }
1104 else {
1105 _mesa_problem(ctx, "Unexpected dstFormat in _mesa_texstore_rgba");
1106 return GL_FALSE;
1107 }
1108
1109 _mesa_swizzle_ubyte_image(ctx, dims,
1110 srcFormat,
1111 srcType,
1112 baseInternalFormat,
1113 dstmap, components,
1114 dstAddr, dstXoffset, dstYoffset, dstZoffset,
1115 dstRowStride, dstImageOffsets,
1116 srcWidth, srcHeight, srcDepth, srcAddr,
1117 srcPacking);
1118 }
1119 else {
1120 /* general path */
1121 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1122 baseInternalFormat,
1123 dstFormat->BaseFormat,
1124 srcWidth, srcHeight, srcDepth,
1125 srcFormat, srcType, srcAddr,
1126 srcPacking);
1127 const GLchan *src = tempImage;
1128 GLint bytesPerRow;
1129 GLint img, row;
1130 if (!tempImage)
1131 return GL_FALSE;
1132 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1133 bytesPerRow = srcWidth * components * sizeof(GLchan);
1134 for (img = 0; img < srcDepth; img++) {
1135 GLubyte *dstRow = (GLubyte *) dstAddr
1136 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1137 + dstYoffset * dstRowStride
1138 + dstXoffset * dstFormat->TexelBytes;
1139 for (row = 0; row < srcHeight; row++) {
1140 _mesa_memcpy(dstRow, src, bytesPerRow);
1141 dstRow += dstRowStride;
1142 src += srcWidth * components;
1143 }
1144 }
1145
1146 _mesa_free((void *) tempImage);
1147 }
1148 return GL_TRUE;
1149 }
1150
1151
1152 /**
1153 * Store a 32-bit integer depth component texture image.
1154 */
1155 GLboolean
1156 _mesa_texstore_z32(TEXSTORE_PARAMS)
1157 {
1158 const GLuint depthScale = 0xffffffff;
1159 (void) dims;
1160 ASSERT(dstFormat == &_mesa_texformat_z32);
1161 ASSERT(dstFormat->TexelBytes == sizeof(GLuint));
1162
1163 if (ctx->Pixel.DepthScale == 1.0f &&
1164 ctx->Pixel.DepthBias == 0.0f &&
1165 !srcPacking->SwapBytes &&
1166 baseInternalFormat == GL_DEPTH_COMPONENT &&
1167 srcFormat == GL_DEPTH_COMPONENT &&
1168 srcType == GL_UNSIGNED_INT) {
1169 /* simple memcpy path */
1170 memcpy_texture(ctx, dims,
1171 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1172 dstRowStride,
1173 dstImageOffsets,
1174 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1175 srcAddr, srcPacking);
1176 }
1177 else {
1178 /* general path */
1179 GLint img, row;
1180 for (img = 0; img < srcDepth; img++) {
1181 GLubyte *dstRow = (GLubyte *) dstAddr
1182 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1183 + dstYoffset * dstRowStride
1184 + dstXoffset * dstFormat->TexelBytes;
1185 for (row = 0; row < srcHeight; row++) {
1186 const GLvoid *src = _mesa_image_address(dims, srcPacking,
1187 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
1188 _mesa_unpack_depth_span(ctx, srcWidth,
1189 GL_UNSIGNED_INT, (GLuint *) dstRow,
1190 depthScale, srcType, src, srcPacking);
1191 dstRow += dstRowStride;
1192 }
1193 }
1194 }
1195 return GL_TRUE;
1196 }
1197
1198 #define STRIDE_3D 0
1199
1200 /**
1201 * Store a 16-bit integer depth component texture image.
1202 */
1203 GLboolean
1204 _mesa_texstore_z16(TEXSTORE_PARAMS)
1205 {
1206 const GLuint depthScale = 0xffff;
1207 (void) dims;
1208 ASSERT(dstFormat == &_mesa_texformat_z16);
1209 ASSERT(dstFormat->TexelBytes == sizeof(GLushort));
1210
1211 if (ctx->Pixel.DepthScale == 1.0f &&
1212 ctx->Pixel.DepthBias == 0.0f &&
1213 !srcPacking->SwapBytes &&
1214 baseInternalFormat == GL_DEPTH_COMPONENT &&
1215 srcFormat == GL_DEPTH_COMPONENT &&
1216 srcType == GL_UNSIGNED_SHORT) {
1217 /* simple memcpy path */
1218 memcpy_texture(ctx, dims,
1219 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1220 dstRowStride,
1221 dstImageOffsets,
1222 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1223 srcAddr, srcPacking);
1224 }
1225 else {
1226 /* general path */
1227 GLint img, row;
1228 for (img = 0; img < srcDepth; img++) {
1229 GLubyte *dstRow = (GLubyte *) dstAddr
1230 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1231 + dstYoffset * dstRowStride
1232 + dstXoffset * dstFormat->TexelBytes;
1233 for (row = 0; row < srcHeight; row++) {
1234 const GLvoid *src = _mesa_image_address(dims, srcPacking,
1235 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
1236 GLushort *dst16 = (GLushort *) dstRow;
1237 _mesa_unpack_depth_span(ctx, srcWidth,
1238 GL_UNSIGNED_SHORT, dst16, depthScale,
1239 srcType, src, srcPacking);
1240 dstRow += dstRowStride;
1241 }
1242 }
1243 }
1244 return GL_TRUE;
1245 }
1246
1247
1248 /**
1249 * Store an rgb565 or rgb565_rev texture image.
1250 */
1251 GLboolean
1252 _mesa_texstore_rgb565(TEXSTORE_PARAMS)
1253 {
1254 ASSERT(dstFormat == &_mesa_texformat_rgb565 ||
1255 dstFormat == &_mesa_texformat_rgb565_rev);
1256 ASSERT(dstFormat->TexelBytes == 2);
1257
1258 if (!ctx->_ImageTransferState &&
1259 !srcPacking->SwapBytes &&
1260 dstFormat == &_mesa_texformat_rgb565 &&
1261 baseInternalFormat == GL_RGB &&
1262 srcFormat == GL_RGB &&
1263 srcType == GL_UNSIGNED_SHORT_5_6_5) {
1264 /* simple memcpy path */
1265 memcpy_texture(ctx, dims,
1266 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1267 dstRowStride,
1268 dstImageOffsets,
1269 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1270 srcAddr, srcPacking);
1271 }
1272 else if (!ctx->_ImageTransferState &&
1273 !srcPacking->SwapBytes &&
1274 baseInternalFormat == GL_RGB &&
1275 srcFormat == GL_RGB &&
1276 srcType == GL_UNSIGNED_BYTE &&
1277 dims == 2) {
1278 /* do optimized tex store */
1279 const GLint srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth,
1280 srcFormat, srcType);
1281 const GLubyte *src = (const GLubyte *)
1282 _mesa_image_address(dims, srcPacking, srcAddr, srcWidth, srcHeight,
1283 srcFormat, srcType, 0, 0, 0);
1284 GLubyte *dst = (GLubyte *) dstAddr
1285 + dstYoffset * dstRowStride
1286 + dstXoffset * dstFormat->TexelBytes;
1287 GLint row, col;
1288 for (row = 0; row < srcHeight; row++) {
1289 const GLubyte *srcUB = (const GLubyte *) src;
1290 GLushort *dstUS = (GLushort *) dst;
1291 /* check for byteswapped format */
1292 if (dstFormat == &_mesa_texformat_rgb565) {
1293 for (col = 0; col < srcWidth; col++) {
1294 dstUS[col] = PACK_COLOR_565( srcUB[0], srcUB[1], srcUB[2] );
1295 srcUB += 3;
1296 }
1297 }
1298 else {
1299 for (col = 0; col < srcWidth; col++) {
1300 dstUS[col] = PACK_COLOR_565_REV( srcUB[0], srcUB[1], srcUB[2] );
1301 srcUB += 3;
1302 }
1303 }
1304 dst += dstRowStride;
1305 src += srcRowStride;
1306 }
1307 }
1308 else {
1309 /* general path */
1310 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1311 baseInternalFormat,
1312 dstFormat->BaseFormat,
1313 srcWidth, srcHeight, srcDepth,
1314 srcFormat, srcType, srcAddr,
1315 srcPacking);
1316 const GLchan *src = tempImage;
1317 GLint img, row, col;
1318 if (!tempImage)
1319 return GL_FALSE;
1320 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1321 for (img = 0; img < srcDepth; img++) {
1322 GLubyte *dstRow = (GLubyte *) dstAddr
1323 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1324 + dstYoffset * dstRowStride
1325 + dstXoffset * dstFormat->TexelBytes;
1326 for (row = 0; row < srcHeight; row++) {
1327 GLushort *dstUS = (GLushort *) dstRow;
1328 /* check for byteswapped format */
1329 if (dstFormat == &_mesa_texformat_rgb565) {
1330 for (col = 0; col < srcWidth; col++) {
1331 dstUS[col] = PACK_COLOR_565( CHAN_TO_UBYTE(src[RCOMP]),
1332 CHAN_TO_UBYTE(src[GCOMP]),
1333 CHAN_TO_UBYTE(src[BCOMP]) );
1334 src += 3;
1335 }
1336 }
1337 else {
1338 for (col = 0; col < srcWidth; col++) {
1339 dstUS[col] = PACK_COLOR_565_REV( CHAN_TO_UBYTE(src[RCOMP]),
1340 CHAN_TO_UBYTE(src[GCOMP]),
1341 CHAN_TO_UBYTE(src[BCOMP]) );
1342 src += 3;
1343 }
1344 }
1345 dstRow += dstRowStride;
1346 }
1347 }
1348 _mesa_free((void *) tempImage);
1349 }
1350 return GL_TRUE;
1351 }
1352
1353
1354 /**
1355 * Store a texture in MESA_FORMAT_RGBA8888 or MESA_FORMAT_RGBA8888_REV.
1356 */
1357 GLboolean
1358 _mesa_texstore_rgba8888(TEXSTORE_PARAMS)
1359 {
1360 const GLboolean littleEndian = _mesa_little_endian();
1361
1362 ASSERT(dstFormat == &_mesa_texformat_rgba8888 ||
1363 dstFormat == &_mesa_texformat_rgba8888_rev);
1364 ASSERT(dstFormat->TexelBytes == 4);
1365
1366 if (!ctx->_ImageTransferState &&
1367 !srcPacking->SwapBytes &&
1368 dstFormat == &_mesa_texformat_rgba8888 &&
1369 baseInternalFormat == GL_RGBA &&
1370 ((srcFormat == GL_RGBA && srcType == GL_UNSIGNED_INT_8_8_8_8) ||
1371 (srcFormat == GL_RGBA && srcType == GL_UNSIGNED_BYTE && !littleEndian) ||
1372 (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_INT_8_8_8_8_REV) ||
1373 (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_BYTE && littleEndian))) {
1374 /* simple memcpy path */
1375 memcpy_texture(ctx, dims,
1376 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1377 dstRowStride,
1378 dstImageOffsets,
1379 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1380 srcAddr, srcPacking);
1381 }
1382 else if (!ctx->_ImageTransferState &&
1383 !srcPacking->SwapBytes &&
1384 dstFormat == &_mesa_texformat_rgba8888_rev &&
1385 baseInternalFormat == GL_RGBA &&
1386 ((srcFormat == GL_RGBA && srcType == GL_UNSIGNED_INT_8_8_8_8_REV) ||
1387 (srcFormat == GL_RGBA && srcType == GL_UNSIGNED_BYTE && littleEndian) ||
1388 (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_INT_8_8_8_8) ||
1389 (srcFormat == GL_ABGR_EXT && srcType == GL_UNSIGNED_BYTE && !littleEndian))) {
1390 /* simple memcpy path */
1391 memcpy_texture(ctx, dims,
1392 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1393 dstRowStride,
1394 dstImageOffsets,
1395 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1396 srcAddr, srcPacking);
1397 }
1398 else if (!ctx->_ImageTransferState &&
1399 (srcType == GL_UNSIGNED_BYTE ||
1400 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
1401 srcType == GL_UNSIGNED_INT_8_8_8_8_REV) &&
1402 can_swizzle(baseInternalFormat) &&
1403 can_swizzle(srcFormat)) {
1404
1405 GLubyte dstmap[4];
1406
1407 /* dstmap - how to swizzle from RGBA to dst format:
1408 */
1409 if ((littleEndian && dstFormat == &_mesa_texformat_rgba8888) ||
1410 (!littleEndian && dstFormat == &_mesa_texformat_rgba8888_rev)) {
1411 dstmap[3] = 0;
1412 dstmap[2] = 1;
1413 dstmap[1] = 2;
1414 dstmap[0] = 3;
1415 }
1416 else {
1417 dstmap[3] = 3;
1418 dstmap[2] = 2;
1419 dstmap[1] = 1;
1420 dstmap[0] = 0;
1421 }
1422
1423 _mesa_swizzle_ubyte_image(ctx, dims,
1424 srcFormat,
1425 srcType,
1426 baseInternalFormat,
1427 dstmap, 4,
1428 dstAddr, dstXoffset, dstYoffset, dstZoffset,
1429 dstRowStride, dstImageOffsets,
1430 srcWidth, srcHeight, srcDepth, srcAddr,
1431 srcPacking);
1432 }
1433 else {
1434 /* general path */
1435 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1436 baseInternalFormat,
1437 dstFormat->BaseFormat,
1438 srcWidth, srcHeight, srcDepth,
1439 srcFormat, srcType, srcAddr,
1440 srcPacking);
1441 const GLchan *src = tempImage;
1442 GLint img, row, col;
1443 if (!tempImage)
1444 return GL_FALSE;
1445 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1446 for (img = 0; img < srcDepth; img++) {
1447 GLubyte *dstRow = (GLubyte *) dstAddr
1448 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1449 + dstYoffset * dstRowStride
1450 + dstXoffset * dstFormat->TexelBytes;
1451 for (row = 0; row < srcHeight; row++) {
1452 GLuint *dstUI = (GLuint *) dstRow;
1453 if (dstFormat == &_mesa_texformat_rgba8888) {
1454 for (col = 0; col < srcWidth; col++) {
1455 dstUI[col] = PACK_COLOR_8888( CHAN_TO_UBYTE(src[RCOMP]),
1456 CHAN_TO_UBYTE(src[GCOMP]),
1457 CHAN_TO_UBYTE(src[BCOMP]),
1458 CHAN_TO_UBYTE(src[ACOMP]) );
1459 src += 4;
1460 }
1461 }
1462 else {
1463 for (col = 0; col < srcWidth; col++) {
1464 dstUI[col] = PACK_COLOR_8888_REV( CHAN_TO_UBYTE(src[RCOMP]),
1465 CHAN_TO_UBYTE(src[GCOMP]),
1466 CHAN_TO_UBYTE(src[BCOMP]),
1467 CHAN_TO_UBYTE(src[ACOMP]) );
1468 src += 4;
1469 }
1470 }
1471 dstRow += dstRowStride;
1472 }
1473 }
1474 _mesa_free((void *) tempImage);
1475 }
1476 return GL_TRUE;
1477 }
1478
1479
1480 GLboolean
1481 _mesa_texstore_argb8888(TEXSTORE_PARAMS)
1482 {
1483 const GLboolean littleEndian = _mesa_little_endian();
1484
1485 ASSERT(dstFormat == &_mesa_texformat_argb8888 ||
1486 dstFormat == &_mesa_texformat_argb8888_rev);
1487 ASSERT(dstFormat->TexelBytes == 4);
1488
1489 if (!ctx->_ImageTransferState &&
1490 !srcPacking->SwapBytes &&
1491 dstFormat == &_mesa_texformat_argb8888 &&
1492 baseInternalFormat == GL_RGBA &&
1493 srcFormat == GL_BGRA &&
1494 ((srcType == GL_UNSIGNED_BYTE && littleEndian) ||
1495 srcType == GL_UNSIGNED_INT_8_8_8_8_REV)) {
1496 /* simple memcpy path (little endian) */
1497 memcpy_texture(ctx, dims,
1498 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1499 dstRowStride,
1500 dstImageOffsets,
1501 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1502 srcAddr, srcPacking);
1503 }
1504 else if (!ctx->_ImageTransferState &&
1505 !srcPacking->SwapBytes &&
1506 dstFormat == &_mesa_texformat_argb8888_rev &&
1507 baseInternalFormat == GL_RGBA &&
1508 srcFormat == GL_BGRA &&
1509 ((srcType == GL_UNSIGNED_BYTE && !littleEndian) ||
1510 srcType == GL_UNSIGNED_INT_8_8_8_8)) {
1511 /* simple memcpy path (big endian) */
1512 memcpy_texture(ctx, dims,
1513 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1514 dstRowStride,
1515 dstImageOffsets,
1516 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1517 srcAddr, srcPacking);
1518 }
1519 else if (!ctx->_ImageTransferState &&
1520 !srcPacking->SwapBytes &&
1521 dstFormat == &_mesa_texformat_argb8888 &&
1522 srcFormat == GL_RGB &&
1523 (baseInternalFormat == GL_RGBA ||
1524 baseInternalFormat == GL_RGB) &&
1525 srcType == GL_UNSIGNED_BYTE) {
1526 int img, row, col;
1527 for (img = 0; img < srcDepth; img++) {
1528 const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
1529 srcWidth, srcFormat, srcType);
1530 GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking,
1531 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0);
1532 GLubyte *dstRow = (GLubyte *) dstAddr
1533 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1534 + dstYoffset * dstRowStride
1535 + dstXoffset * dstFormat->TexelBytes;
1536 for (row = 0; row < srcHeight; row++) {
1537 GLuint *d4 = (GLuint *) dstRow;
1538 for (col = 0; col < srcWidth; col++) {
1539 d4[col] = PACK_COLOR_8888(0xff,
1540 srcRow[col * 3 + RCOMP],
1541 srcRow[col * 3 + GCOMP],
1542 srcRow[col * 3 + BCOMP]);
1543 }
1544 dstRow += dstRowStride;
1545 srcRow += srcRowStride;
1546 }
1547 }
1548 }
1549 else if (!ctx->_ImageTransferState &&
1550 !srcPacking->SwapBytes &&
1551 dstFormat == &_mesa_texformat_argb8888 &&
1552 srcFormat == GL_RGBA &&
1553 baseInternalFormat == GL_RGBA &&
1554 srcType == GL_UNSIGNED_BYTE) {
1555 /* same as above case, but src data has alpha too */
1556 GLint img, row, col;
1557 /* For some reason, streaming copies to write-combined regions
1558 * are extremely sensitive to the characteristics of how the
1559 * source data is retrieved. By reordering the source reads to
1560 * be in-order, the speed of this operation increases by half.
1561 * Strangely the same isn't required for the RGB path, above.
1562 */
1563 for (img = 0; img < srcDepth; img++) {
1564 const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
1565 srcWidth, srcFormat, srcType);
1566 GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking,
1567 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0);
1568 GLubyte *dstRow = (GLubyte *) dstAddr
1569 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1570 + dstYoffset * dstRowStride
1571 + dstXoffset * dstFormat->TexelBytes;
1572 for (row = 0; row < srcHeight; row++) {
1573 GLuint *d4 = (GLuint *) dstRow;
1574 for (col = 0; col < srcWidth; col++) {
1575 d4[col] = PACK_COLOR_8888(srcRow[col * 4 + ACOMP],
1576 srcRow[col * 4 + RCOMP],
1577 srcRow[col * 4 + GCOMP],
1578 srcRow[col * 4 + BCOMP]);
1579 }
1580 dstRow += dstRowStride;
1581 srcRow += srcRowStride;
1582 }
1583 }
1584 }
1585 else if (!ctx->_ImageTransferState &&
1586 (srcType == GL_UNSIGNED_BYTE ||
1587 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
1588 srcType == GL_UNSIGNED_INT_8_8_8_8_REV) &&
1589 can_swizzle(baseInternalFormat) &&
1590 can_swizzle(srcFormat)) {
1591
1592 GLubyte dstmap[4];
1593
1594 /* dstmap - how to swizzle from RGBA to dst format:
1595 */
1596 if ((littleEndian && dstFormat == &_mesa_texformat_argb8888) ||
1597 (!littleEndian && dstFormat == &_mesa_texformat_argb8888_rev)) {
1598 dstmap[3] = 3; /* alpha */
1599 dstmap[2] = 0; /* red */
1600 dstmap[1] = 1; /* green */
1601 dstmap[0] = 2; /* blue */
1602 }
1603 else {
1604 assert((littleEndian && dstFormat == &_mesa_texformat_argb8888_rev) ||
1605 (!littleEndian && dstFormat == &_mesa_texformat_argb8888));
1606 dstmap[3] = 2;
1607 dstmap[2] = 1;
1608 dstmap[1] = 0;
1609 dstmap[0] = 3;
1610 }
1611
1612 _mesa_swizzle_ubyte_image(ctx, dims,
1613 srcFormat,
1614 srcType,
1615
1616 baseInternalFormat,
1617 dstmap, 4,
1618 dstAddr, dstXoffset, dstYoffset, dstZoffset,
1619 dstRowStride,
1620 dstImageOffsets,
1621 srcWidth, srcHeight, srcDepth, srcAddr,
1622 srcPacking);
1623 }
1624 else {
1625 /* general path */
1626 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1627 baseInternalFormat,
1628 dstFormat->BaseFormat,
1629 srcWidth, srcHeight, srcDepth,
1630 srcFormat, srcType, srcAddr,
1631 srcPacking);
1632 const GLchan *src = tempImage;
1633 GLint img, row, col;
1634 if (!tempImage)
1635 return GL_FALSE;
1636 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1637 for (img = 0; img < srcDepth; img++) {
1638 GLubyte *dstRow = (GLubyte *) dstAddr
1639 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1640 + dstYoffset * dstRowStride
1641 + dstXoffset * dstFormat->TexelBytes;
1642 for (row = 0; row < srcHeight; row++) {
1643 GLuint *dstUI = (GLuint *) dstRow;
1644 if (dstFormat == &_mesa_texformat_argb8888) {
1645 for (col = 0; col < srcWidth; col++) {
1646 dstUI[col] = PACK_COLOR_8888( CHAN_TO_UBYTE(src[ACOMP]),
1647 CHAN_TO_UBYTE(src[RCOMP]),
1648 CHAN_TO_UBYTE(src[GCOMP]),
1649 CHAN_TO_UBYTE(src[BCOMP]) );
1650 src += 4;
1651 }
1652 }
1653 else {
1654 for (col = 0; col < srcWidth; col++) {
1655 dstUI[col] = PACK_COLOR_8888_REV( CHAN_TO_UBYTE(src[ACOMP]),
1656 CHAN_TO_UBYTE(src[RCOMP]),
1657 CHAN_TO_UBYTE(src[GCOMP]),
1658 CHAN_TO_UBYTE(src[BCOMP]) );
1659 src += 4;
1660 }
1661 }
1662 dstRow += dstRowStride;
1663 }
1664 }
1665 _mesa_free((void *) tempImage);
1666 }
1667 return GL_TRUE;
1668 }
1669
1670
1671 GLboolean
1672 _mesa_texstore_rgb888(TEXSTORE_PARAMS)
1673 {
1674 const GLboolean littleEndian = _mesa_little_endian();
1675
1676 ASSERT(dstFormat == &_mesa_texformat_rgb888);
1677 ASSERT(dstFormat->TexelBytes == 3);
1678
1679 if (!ctx->_ImageTransferState &&
1680 !srcPacking->SwapBytes &&
1681 baseInternalFormat == GL_RGB &&
1682 srcFormat == GL_BGR &&
1683 srcType == GL_UNSIGNED_BYTE &&
1684 littleEndian) {
1685 /* simple memcpy path */
1686 memcpy_texture(ctx, dims,
1687 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1688 dstRowStride,
1689 dstImageOffsets,
1690 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1691 srcAddr, srcPacking);
1692 }
1693 else if (!ctx->_ImageTransferState &&
1694 !srcPacking->SwapBytes &&
1695 srcFormat == GL_RGBA &&
1696 srcType == GL_UNSIGNED_BYTE) {
1697 /* extract RGB from RGBA */
1698 GLint img, row, col;
1699 for (img = 0; img < srcDepth; img++) {
1700 const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
1701 srcWidth, srcFormat, srcType);
1702 GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking,
1703 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0);
1704 GLubyte *dstRow = (GLubyte *) dstAddr
1705 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1706 + dstYoffset * dstRowStride
1707 + dstXoffset * dstFormat->TexelBytes;
1708 for (row = 0; row < srcHeight; row++) {
1709 for (col = 0; col < srcWidth; col++) {
1710 dstRow[col * 3 + 0] = srcRow[col * 4 + BCOMP];
1711 dstRow[col * 3 + 1] = srcRow[col * 4 + GCOMP];
1712 dstRow[col * 3 + 2] = srcRow[col * 4 + RCOMP];
1713 }
1714 dstRow += dstRowStride;
1715 srcRow += srcRowStride;
1716 }
1717 }
1718 }
1719 else if (!ctx->_ImageTransferState &&
1720 srcType == GL_UNSIGNED_BYTE &&
1721 can_swizzle(baseInternalFormat) &&
1722 can_swizzle(srcFormat)) {
1723
1724 GLubyte dstmap[4];
1725
1726 /* dstmap - how to swizzle from RGBA to dst format:
1727 */
1728 dstmap[0] = 2;
1729 dstmap[1] = 1;
1730 dstmap[2] = 0;
1731 dstmap[3] = ONE; /* ? */
1732
1733 _mesa_swizzle_ubyte_image(ctx, dims,
1734 srcFormat,
1735 srcType,
1736 baseInternalFormat,
1737 dstmap, 3,
1738 dstAddr, dstXoffset, dstYoffset, dstZoffset,
1739 dstRowStride, dstImageOffsets,
1740 srcWidth, srcHeight, srcDepth, srcAddr,
1741 srcPacking);
1742 }
1743 else {
1744 /* general path */
1745 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1746 baseInternalFormat,
1747 dstFormat->BaseFormat,
1748 srcWidth, srcHeight, srcDepth,
1749 srcFormat, srcType, srcAddr,
1750 srcPacking);
1751 const GLchan *src = (const GLchan *) tempImage;
1752 GLint img, row, col;
1753 if (!tempImage)
1754 return GL_FALSE;
1755 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1756 for (img = 0; img < srcDepth; img++) {
1757 GLubyte *dstRow = (GLubyte *) dstAddr
1758 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1759 + dstYoffset * dstRowStride
1760 + dstXoffset * dstFormat->TexelBytes;
1761 for (row = 0; row < srcHeight; row++) {
1762 #if 0
1763 if (littleEndian) {
1764 for (col = 0; col < srcWidth; col++) {
1765 dstRow[col * 3 + 0] = CHAN_TO_UBYTE(src[RCOMP]);
1766 dstRow[col * 3 + 1] = CHAN_TO_UBYTE(src[GCOMP]);
1767 dstRow[col * 3 + 2] = CHAN_TO_UBYTE(src[BCOMP]);
1768 srcUB += 3;
1769 }
1770 }
1771 else {
1772 for (col = 0; col < srcWidth; col++) {
1773 dstRow[col * 3 + 0] = srcUB[BCOMP];
1774 dstRow[col * 3 + 1] = srcUB[GCOMP];
1775 dstRow[col * 3 + 2] = srcUB[RCOMP];
1776 srcUB += 3;
1777 }
1778 }
1779 #else
1780 for (col = 0; col < srcWidth; col++) {
1781 dstRow[col * 3 + 0] = CHAN_TO_UBYTE(src[BCOMP]);
1782 dstRow[col * 3 + 1] = CHAN_TO_UBYTE(src[GCOMP]);
1783 dstRow[col * 3 + 2] = CHAN_TO_UBYTE(src[RCOMP]);
1784 src += 3;
1785 }
1786 #endif
1787 dstRow += dstRowStride;
1788 }
1789 }
1790 _mesa_free((void *) tempImage);
1791 }
1792 return GL_TRUE;
1793 }
1794
1795
1796 GLboolean
1797 _mesa_texstore_bgr888(TEXSTORE_PARAMS)
1798 {
1799 const GLboolean littleEndian = _mesa_little_endian();
1800
1801 ASSERT(dstFormat == &_mesa_texformat_bgr888);
1802 ASSERT(dstFormat->TexelBytes == 3);
1803
1804 if (!ctx->_ImageTransferState &&
1805 !srcPacking->SwapBytes &&
1806 baseInternalFormat == GL_RGB &&
1807 srcFormat == GL_RGB &&
1808 srcType == GL_UNSIGNED_BYTE &&
1809 littleEndian) {
1810 /* simple memcpy path */
1811 memcpy_texture(ctx, dims,
1812 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1813 dstRowStride,
1814 dstImageOffsets,
1815 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1816 srcAddr, srcPacking);
1817 }
1818 else if (!ctx->_ImageTransferState &&
1819 !srcPacking->SwapBytes &&
1820 srcFormat == GL_RGBA &&
1821 srcType == GL_UNSIGNED_BYTE) {
1822 /* extract BGR from RGBA */
1823 int img, row, col;
1824 for (img = 0; img < srcDepth; img++) {
1825 const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
1826 srcWidth, srcFormat, srcType);
1827 GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking,
1828 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0);
1829 GLubyte *dstRow = (GLubyte *) dstAddr
1830 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1831 + dstYoffset * dstRowStride
1832 + dstXoffset * dstFormat->TexelBytes;
1833 for (row = 0; row < srcHeight; row++) {
1834 for (col = 0; col < srcWidth; col++) {
1835 dstRow[col * 3 + 0] = srcRow[col * 4 + RCOMP];
1836 dstRow[col * 3 + 1] = srcRow[col * 4 + GCOMP];
1837 dstRow[col * 3 + 2] = srcRow[col * 4 + BCOMP];
1838 }
1839 dstRow += dstRowStride;
1840 srcRow += srcRowStride;
1841 }
1842 }
1843 }
1844 else if (!ctx->_ImageTransferState &&
1845 srcType == GL_UNSIGNED_BYTE &&
1846 can_swizzle(baseInternalFormat) &&
1847 can_swizzle(srcFormat)) {
1848
1849 GLubyte dstmap[4];
1850
1851 /* dstmap - how to swizzle from RGBA to dst format:
1852 */
1853 dstmap[0] = 0;
1854 dstmap[1] = 1;
1855 dstmap[2] = 2;
1856 dstmap[3] = ONE; /* ? */
1857
1858 _mesa_swizzle_ubyte_image(ctx, dims,
1859 srcFormat,
1860 srcType,
1861 baseInternalFormat,
1862 dstmap, 3,
1863 dstAddr, dstXoffset, dstYoffset, dstZoffset,
1864 dstRowStride, dstImageOffsets,
1865 srcWidth, srcHeight, srcDepth, srcAddr,
1866 srcPacking);
1867 }
1868 else {
1869 /* general path */
1870 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1871 baseInternalFormat,
1872 dstFormat->BaseFormat,
1873 srcWidth, srcHeight, srcDepth,
1874 srcFormat, srcType, srcAddr,
1875 srcPacking);
1876 const GLchan *src = (const GLchan *) tempImage;
1877 GLint img, row, col;
1878 if (!tempImage)
1879 return GL_FALSE;
1880 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1881 for (img = 0; img < srcDepth; img++) {
1882 GLubyte *dstRow = (GLubyte *) dstAddr
1883 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1884 + dstYoffset * dstRowStride
1885 + dstXoffset * dstFormat->TexelBytes;
1886 for (row = 0; row < srcHeight; row++) {
1887 for (col = 0; col < srcWidth; col++) {
1888 dstRow[col * 3 + 0] = CHAN_TO_UBYTE(src[RCOMP]);
1889 dstRow[col * 3 + 1] = CHAN_TO_UBYTE(src[GCOMP]);
1890 dstRow[col * 3 + 2] = CHAN_TO_UBYTE(src[BCOMP]);
1891 src += 3;
1892 }
1893 dstRow += dstRowStride;
1894 }
1895 }
1896 _mesa_free((void *) tempImage);
1897 }
1898 return GL_TRUE;
1899 }
1900
1901
1902 GLboolean
1903 _mesa_texstore_argb4444(TEXSTORE_PARAMS)
1904 {
1905 ASSERT(dstFormat == &_mesa_texformat_argb4444 ||
1906 dstFormat == &_mesa_texformat_argb4444_rev);
1907 ASSERT(dstFormat->TexelBytes == 2);
1908
1909 if (!ctx->_ImageTransferState &&
1910 !srcPacking->SwapBytes &&
1911 dstFormat == &_mesa_texformat_argb4444 &&
1912 baseInternalFormat == GL_RGBA &&
1913 srcFormat == GL_BGRA &&
1914 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
1915 /* simple memcpy path */
1916 memcpy_texture(ctx, dims,
1917 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1918 dstRowStride,
1919 dstImageOffsets,
1920 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1921 srcAddr, srcPacking);
1922 }
1923 else {
1924 /* general path */
1925 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1926 baseInternalFormat,
1927 dstFormat->BaseFormat,
1928 srcWidth, srcHeight, srcDepth,
1929 srcFormat, srcType, srcAddr,
1930 srcPacking);
1931 const GLchan *src = tempImage;
1932 GLint img, row, col;
1933 if (!tempImage)
1934 return GL_FALSE;
1935 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1936 for (img = 0; img < srcDepth; img++) {
1937 GLubyte *dstRow = (GLubyte *) dstAddr
1938 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1939 + dstYoffset * dstRowStride
1940 + dstXoffset * dstFormat->TexelBytes;
1941 for (row = 0; row < srcHeight; row++) {
1942 GLushort *dstUS = (GLushort *) dstRow;
1943 if (dstFormat == &_mesa_texformat_argb4444) {
1944 for (col = 0; col < srcWidth; col++) {
1945 dstUS[col] = PACK_COLOR_4444( CHAN_TO_UBYTE(src[ACOMP]),
1946 CHAN_TO_UBYTE(src[RCOMP]),
1947 CHAN_TO_UBYTE(src[GCOMP]),
1948 CHAN_TO_UBYTE(src[BCOMP]) );
1949 src += 4;
1950 }
1951 }
1952 else {
1953 for (col = 0; col < srcWidth; col++) {
1954 dstUS[col] = PACK_COLOR_4444_REV( CHAN_TO_UBYTE(src[ACOMP]),
1955 CHAN_TO_UBYTE(src[RCOMP]),
1956 CHAN_TO_UBYTE(src[GCOMP]),
1957 CHAN_TO_UBYTE(src[BCOMP]) );
1958 src += 4;
1959 }
1960 }
1961 dstRow += dstRowStride;
1962 }
1963 }
1964 _mesa_free((void *) tempImage);
1965 }
1966 return GL_TRUE;
1967 }
1968
1969
1970
1971 GLboolean
1972 _mesa_texstore_argb1555(TEXSTORE_PARAMS)
1973 {
1974 ASSERT(dstFormat == &_mesa_texformat_argb1555 ||
1975 dstFormat == &_mesa_texformat_argb1555_rev);
1976 ASSERT(dstFormat->TexelBytes == 2);
1977
1978 if (!ctx->_ImageTransferState &&
1979 !srcPacking->SwapBytes &&
1980 dstFormat == &_mesa_texformat_argb1555 &&
1981 baseInternalFormat == GL_RGBA &&
1982 srcFormat == GL_BGRA &&
1983 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
1984 /* simple memcpy path */
1985 memcpy_texture(ctx, dims,
1986 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1987 dstRowStride,
1988 dstImageOffsets,
1989 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1990 srcAddr, srcPacking);
1991 }
1992 else {
1993 /* general path */
1994 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1995 baseInternalFormat,
1996 dstFormat->BaseFormat,
1997 srcWidth, srcHeight, srcDepth,
1998 srcFormat, srcType, srcAddr,
1999 srcPacking);
2000 const GLchan *src =tempImage;
2001 GLint img, row, col;
2002 if (!tempImage)
2003 return GL_FALSE;
2004 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2005 for (img = 0; img < srcDepth; img++) {
2006 GLubyte *dstRow = (GLubyte *) dstAddr
2007 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2008 + dstYoffset * dstRowStride
2009 + dstXoffset * dstFormat->TexelBytes;
2010 for (row = 0; row < srcHeight; row++) {
2011 GLushort *dstUS = (GLushort *) dstRow;
2012 if (dstFormat == &_mesa_texformat_argb1555) {
2013 for (col = 0; col < srcWidth; col++) {
2014 dstUS[col] = PACK_COLOR_1555( CHAN_TO_UBYTE(src[ACOMP]),
2015 CHAN_TO_UBYTE(src[RCOMP]),
2016 CHAN_TO_UBYTE(src[GCOMP]),
2017 CHAN_TO_UBYTE(src[BCOMP]) );
2018 src += 4;
2019 }
2020 }
2021 else {
2022 for (col = 0; col < srcWidth; col++) {
2023 dstUS[col] = PACK_COLOR_1555_REV( CHAN_TO_UBYTE(src[ACOMP]),
2024 CHAN_TO_UBYTE(src[RCOMP]),
2025 CHAN_TO_UBYTE(src[GCOMP]),
2026 CHAN_TO_UBYTE(src[BCOMP]) );
2027 src += 4;
2028 }
2029 }
2030 dstRow += dstRowStride;
2031 }
2032 }
2033 _mesa_free((void *) tempImage);
2034 }
2035 return GL_TRUE;
2036 }
2037
2038
2039 GLboolean
2040 _mesa_texstore_al88(TEXSTORE_PARAMS)
2041 {
2042 const GLboolean littleEndian = _mesa_little_endian();
2043
2044 ASSERT(dstFormat == &_mesa_texformat_al88 ||
2045 dstFormat == &_mesa_texformat_al88_rev);
2046 ASSERT(dstFormat->TexelBytes == 2);
2047
2048 if (!ctx->_ImageTransferState &&
2049 !srcPacking->SwapBytes &&
2050 dstFormat == &_mesa_texformat_al88 &&
2051 baseInternalFormat == GL_LUMINANCE_ALPHA &&
2052 srcFormat == GL_LUMINANCE_ALPHA &&
2053 srcType == GL_UNSIGNED_BYTE &&
2054 littleEndian) {
2055 /* simple memcpy path */
2056 memcpy_texture(ctx, dims,
2057 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2058 dstRowStride,
2059 dstImageOffsets,
2060 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2061 srcAddr, srcPacking);
2062 }
2063 else if (!ctx->_ImageTransferState &&
2064 littleEndian &&
2065 srcType == GL_UNSIGNED_BYTE &&
2066 can_swizzle(baseInternalFormat) &&
2067 can_swizzle(srcFormat)) {
2068
2069 GLubyte dstmap[4];
2070
2071 /* dstmap - how to swizzle from RGBA to dst format:
2072 */
2073 if ((littleEndian && dstFormat == &_mesa_texformat_al88) ||
2074 (!littleEndian && dstFormat == &_mesa_texformat_al88_rev)) {
2075 dstmap[0] = 0;
2076 dstmap[1] = 3;
2077 }
2078 else {
2079 dstmap[0] = 3;
2080 dstmap[1] = 0;
2081 }
2082 dstmap[2] = ZERO; /* ? */
2083 dstmap[3] = ONE; /* ? */
2084
2085 _mesa_swizzle_ubyte_image(ctx, dims,
2086 srcFormat,
2087 srcType,
2088 baseInternalFormat,
2089 dstmap, 2,
2090 dstAddr, dstXoffset, dstYoffset, dstZoffset,
2091 dstRowStride, dstImageOffsets,
2092 srcWidth, srcHeight, srcDepth, srcAddr,
2093 srcPacking);
2094 }
2095 else {
2096 /* general path */
2097 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
2098 baseInternalFormat,
2099 dstFormat->BaseFormat,
2100 srcWidth, srcHeight, srcDepth,
2101 srcFormat, srcType, srcAddr,
2102 srcPacking);
2103 const GLchan *src = tempImage;
2104 GLint img, row, col;
2105 if (!tempImage)
2106 return GL_FALSE;
2107 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2108 for (img = 0; img < srcDepth; img++) {
2109 GLubyte *dstRow = (GLubyte *) dstAddr
2110 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2111 + dstYoffset * dstRowStride
2112 + dstXoffset * dstFormat->TexelBytes;
2113 for (row = 0; row < srcHeight; row++) {
2114 GLushort *dstUS = (GLushort *) dstRow;
2115 if (dstFormat == &_mesa_texformat_al88) {
2116 for (col = 0; col < srcWidth; col++) {
2117 /* src[0] is luminance, src[1] is alpha */
2118 dstUS[col] = PACK_COLOR_88( CHAN_TO_UBYTE(src[1]),
2119 CHAN_TO_UBYTE(src[0]) );
2120 src += 2;
2121 }
2122 }
2123 else {
2124 for (col = 0; col < srcWidth; col++) {
2125 /* src[0] is luminance, src[1] is alpha */
2126 dstUS[col] = PACK_COLOR_88_REV( CHAN_TO_UBYTE(src[1]),
2127 CHAN_TO_UBYTE(src[0]) );
2128 src += 2;
2129 }
2130 }
2131 dstRow += dstRowStride;
2132 }
2133 }
2134 _mesa_free((void *) tempImage);
2135 }
2136 return GL_TRUE;
2137 }
2138
2139
2140 GLboolean
2141 _mesa_texstore_rgb332(TEXSTORE_PARAMS)
2142 {
2143 ASSERT(dstFormat == &_mesa_texformat_rgb332);
2144 ASSERT(dstFormat->TexelBytes == 1);
2145
2146 if (!ctx->_ImageTransferState &&
2147 !srcPacking->SwapBytes &&
2148 baseInternalFormat == GL_RGB &&
2149 srcFormat == GL_RGB && srcType == GL_UNSIGNED_BYTE_3_3_2) {
2150 /* simple memcpy path */
2151 memcpy_texture(ctx, dims,
2152 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2153 dstRowStride,
2154 dstImageOffsets,
2155 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2156 srcAddr, srcPacking);
2157 }
2158 else {
2159 /* general path */
2160 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
2161 baseInternalFormat,
2162 dstFormat->BaseFormat,
2163 srcWidth, srcHeight, srcDepth,
2164 srcFormat, srcType, srcAddr,
2165 srcPacking);
2166 const GLchan *src = tempImage;
2167 GLint img, row, col;
2168 if (!tempImage)
2169 return GL_FALSE;
2170 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2171 for (img = 0; img < srcDepth; img++) {
2172 GLubyte *dstRow = (GLubyte *) dstAddr
2173 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2174 + dstYoffset * dstRowStride
2175 + dstXoffset * dstFormat->TexelBytes;
2176 for (row = 0; row < srcHeight; row++) {
2177 for (col = 0; col < srcWidth; col++) {
2178 dstRow[col] = PACK_COLOR_332( CHAN_TO_UBYTE(src[RCOMP]),
2179 CHAN_TO_UBYTE(src[GCOMP]),
2180 CHAN_TO_UBYTE(src[BCOMP]) );
2181 src += 3;
2182 }
2183 dstRow += dstRowStride;
2184 }
2185 }
2186 _mesa_free((void *) tempImage);
2187 }
2188 return GL_TRUE;
2189 }
2190
2191
2192 /**
2193 * Texstore for _mesa_texformat_a8, _mesa_texformat_l8, _mesa_texformat_i8.
2194 */
2195 GLboolean
2196 _mesa_texstore_a8(TEXSTORE_PARAMS)
2197 {
2198 ASSERT(dstFormat == &_mesa_texformat_a8 ||
2199 dstFormat == &_mesa_texformat_l8 ||
2200 dstFormat == &_mesa_texformat_i8);
2201 ASSERT(dstFormat->TexelBytes == 1);
2202
2203 if (!ctx->_ImageTransferState &&
2204 !srcPacking->SwapBytes &&
2205 baseInternalFormat == srcFormat &&
2206 srcType == GL_UNSIGNED_BYTE) {
2207 /* simple memcpy path */
2208 memcpy_texture(ctx, dims,
2209 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2210 dstRowStride,
2211 dstImageOffsets,
2212 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2213 srcAddr, srcPacking);
2214 }
2215 else if (!ctx->_ImageTransferState &&
2216 srcType == GL_UNSIGNED_BYTE &&
2217 can_swizzle(baseInternalFormat) &&
2218 can_swizzle(srcFormat)) {
2219
2220 GLubyte dstmap[4];
2221
2222 /* dstmap - how to swizzle from RGBA to dst format:
2223 */
2224 if (dstFormat == &_mesa_texformat_a8) {
2225 dstmap[0] = 3;
2226 }
2227 else {
2228 dstmap[0] = 0;
2229 }
2230 dstmap[1] = ZERO; /* ? */
2231 dstmap[2] = ZERO; /* ? */
2232 dstmap[3] = ONE; /* ? */
2233
2234 _mesa_swizzle_ubyte_image(ctx, dims,
2235 srcFormat,
2236 srcType,
2237 baseInternalFormat,
2238 dstmap, 1,
2239 dstAddr, dstXoffset, dstYoffset, dstZoffset,
2240 dstRowStride, dstImageOffsets,
2241 srcWidth, srcHeight, srcDepth, srcAddr,
2242 srcPacking);
2243 }
2244 else {
2245 /* general path */
2246 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
2247 baseInternalFormat,
2248 dstFormat->BaseFormat,
2249 srcWidth, srcHeight, srcDepth,
2250 srcFormat, srcType, srcAddr,
2251 srcPacking);
2252 const GLchan *src = tempImage;
2253 GLint img, row, col;
2254 if (!tempImage)
2255 return GL_FALSE;
2256 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2257 for (img = 0; img < srcDepth; img++) {
2258 GLubyte *dstRow = (GLubyte *) dstAddr
2259 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2260 + dstYoffset * dstRowStride
2261 + dstXoffset * dstFormat->TexelBytes;
2262 for (row = 0; row < srcHeight; row++) {
2263 for (col = 0; col < srcWidth; col++) {
2264 dstRow[col] = CHAN_TO_UBYTE(src[col]);
2265 }
2266 dstRow += dstRowStride;
2267 src += srcWidth;
2268 }
2269 }
2270 _mesa_free((void *) tempImage);
2271 }
2272 return GL_TRUE;
2273 }
2274
2275
2276
2277 GLboolean
2278 _mesa_texstore_ci8(TEXSTORE_PARAMS)
2279 {
2280 (void) dims; (void) baseInternalFormat;
2281 ASSERT(dstFormat == &_mesa_texformat_ci8);
2282 ASSERT(dstFormat->TexelBytes == 1);
2283 ASSERT(baseInternalFormat == GL_COLOR_INDEX);
2284
2285 if (!ctx->_ImageTransferState &&
2286 !srcPacking->SwapBytes &&
2287 srcFormat == GL_COLOR_INDEX &&
2288 srcType == GL_UNSIGNED_BYTE) {
2289 /* simple memcpy path */
2290 memcpy_texture(ctx, dims,
2291 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2292 dstRowStride,
2293 dstImageOffsets,
2294 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2295 srcAddr, srcPacking);
2296 }
2297 else {
2298 /* general path */
2299 GLint img, row;
2300 for (img = 0; img < srcDepth; img++) {
2301 GLubyte *dstRow = (GLubyte *) dstAddr
2302 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2303 + dstYoffset * dstRowStride
2304 + dstXoffset * dstFormat->TexelBytes;
2305 for (row = 0; row < srcHeight; row++) {
2306 const GLvoid *src = _mesa_image_address(dims, srcPacking,
2307 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
2308 _mesa_unpack_index_span(ctx, srcWidth, GL_UNSIGNED_BYTE, dstRow,
2309 srcType, src, srcPacking,
2310 ctx->_ImageTransferState);
2311 dstRow += dstRowStride;
2312 }
2313 }
2314 }
2315 return GL_TRUE;
2316 }
2317
2318
2319 /**
2320 * Texstore for _mesa_texformat_ycbcr or _mesa_texformat_ycbcr_rev.
2321 */
2322 GLboolean
2323 _mesa_texstore_ycbcr(TEXSTORE_PARAMS)
2324 {
2325 const GLboolean littleEndian = _mesa_little_endian();
2326 (void) ctx; (void) dims; (void) baseInternalFormat;
2327
2328 ASSERT((dstFormat == &_mesa_texformat_ycbcr) ||
2329 (dstFormat == &_mesa_texformat_ycbcr_rev));
2330 ASSERT(dstFormat->TexelBytes == 2);
2331 ASSERT(ctx->Extensions.MESA_ycbcr_texture);
2332 ASSERT(srcFormat == GL_YCBCR_MESA);
2333 ASSERT((srcType == GL_UNSIGNED_SHORT_8_8_MESA) ||
2334 (srcType == GL_UNSIGNED_SHORT_8_8_REV_MESA));
2335 ASSERT(baseInternalFormat == GL_YCBCR_MESA);
2336
2337 /* always just memcpy since no pixel transfer ops apply */
2338 memcpy_texture(ctx, dims,
2339 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2340 dstRowStride,
2341 dstImageOffsets,
2342 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2343 srcAddr, srcPacking);
2344
2345 /* Check if we need byte swapping */
2346 /* XXX the logic here _might_ be wrong */
2347 if (srcPacking->SwapBytes ^
2348 (srcType == GL_UNSIGNED_SHORT_8_8_REV_MESA) ^
2349 (dstFormat == &_mesa_texformat_ycbcr_rev) ^
2350 !littleEndian) {
2351 GLint img, row;
2352 for (img = 0; img < srcDepth; img++) {
2353 GLubyte *dstRow = (GLubyte *) dstAddr
2354 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2355 + dstYoffset * dstRowStride
2356 + dstXoffset * dstFormat->TexelBytes;
2357 for (row = 0; row < srcHeight; row++) {
2358 _mesa_swap2((GLushort *) dstRow, srcWidth);
2359 dstRow += dstRowStride;
2360 }
2361 }
2362 }
2363 return GL_TRUE;
2364 }
2365
2366
2367
2368 /**
2369 * Store a combined depth/stencil texture image.
2370 */
2371 GLboolean
2372 _mesa_texstore_z24_s8(TEXSTORE_PARAMS)
2373 {
2374 const GLfloat depthScale = (GLfloat) 0xffffff;
2375
2376 ASSERT(dstFormat == &_mesa_texformat_z24_s8);
2377 ASSERT(srcFormat == GL_DEPTH_STENCIL_EXT);
2378 ASSERT(srcType == GL_UNSIGNED_INT_24_8_EXT);
2379
2380 if (ctx->Pixel.DepthScale == 1.0f &&
2381 ctx->Pixel.DepthBias == 0.0f &&
2382 !srcPacking->SwapBytes) {
2383 /* simple path */
2384 memcpy_texture(ctx, dims,
2385 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2386 dstRowStride,
2387 dstImageOffsets,
2388 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2389 srcAddr, srcPacking);
2390 }
2391 else {
2392 /* general path */
2393 const GLint srcRowStride
2394 = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType)
2395 / sizeof(GLuint);
2396 GLint img, row;
2397
2398 for (img = 0; img < srcDepth; img++) {
2399 GLuint *dstRow = (GLuint *) dstAddr
2400 + dstImageOffsets[dstZoffset + img]
2401 + dstYoffset * dstRowStride / sizeof(GLuint)
2402 + dstXoffset;
2403 const GLuint *src
2404 = (const GLuint *) _mesa_image_address(dims, srcPacking, srcAddr,
2405 srcWidth, srcHeight,
2406 srcFormat, srcType,
2407 img, 0, 0);
2408 for (row = 0; row < srcHeight; row++) {
2409 GLubyte stencil[MAX_WIDTH];
2410 GLint i;
2411 /* the 24 depth bits will be in the high position: */
2412 _mesa_unpack_depth_span(ctx, srcWidth,
2413 GL_UNSIGNED_INT_24_8_EXT, /* dst type */
2414 dstRow, /* dst addr */
2415 (GLuint) depthScale,
2416 srcType, src, srcPacking);
2417 /* get the 8-bit stencil values */
2418 _mesa_unpack_stencil_span(ctx, srcWidth,
2419 GL_UNSIGNED_BYTE, /* dst type */
2420 stencil, /* dst addr */
2421 srcType, src, srcPacking,
2422 ctx->_ImageTransferState);
2423 /* merge stencil values into depth values */
2424 for (i = 0; i < srcWidth; i++)
2425 dstRow[i] |= stencil[i];
2426
2427 src += srcRowStride;
2428 dstRow += dstRowStride / sizeof(GLuint);
2429 }
2430 }
2431 }
2432 return GL_TRUE;
2433 }
2434
2435
2436 /**
2437 * Store a combined depth/stencil texture image.
2438 */
2439 GLboolean
2440 _mesa_texstore_s8_z24(TEXSTORE_PARAMS)
2441 {
2442 const GLuint depthScale = 0xffffff;
2443 const GLint srcRowStride
2444 = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType)
2445 / sizeof(GLuint);
2446 GLint img, row;
2447
2448 ASSERT(dstFormat == &_mesa_texformat_s8_z24);
2449 ASSERT(srcFormat == GL_DEPTH_STENCIL_EXT || srcFormat == GL_DEPTH_COMPONENT);
2450 ASSERT(srcFormat != GL_DEPTH_STENCIL_EXT || srcType == GL_UNSIGNED_INT_24_8_EXT);
2451
2452 /* In case we only upload depth we need to preserve the stencil */
2453 if (srcFormat == GL_DEPTH_COMPONENT) {
2454 for (img = 0; img < srcDepth; img++) {
2455 GLuint *dstRow = (GLuint *) dstAddr
2456 + dstImageOffsets[dstZoffset + img]
2457 + dstYoffset * dstRowStride / sizeof(GLuint)
2458 + dstXoffset;
2459 const GLuint *src
2460 = (const GLuint *) _mesa_image_address(dims, srcPacking, srcAddr,
2461 srcWidth, srcHeight,
2462 srcFormat, srcType,
2463 img, 0, 0);
2464 for (row = 0; row < srcHeight; row++) {
2465 GLuint depth[MAX_WIDTH];
2466 GLint i;
2467 _mesa_unpack_depth_span(ctx, srcWidth,
2468 GL_UNSIGNED_INT, /* dst type */
2469 depth, /* dst addr */
2470 depthScale,
2471 srcType, src, srcPacking);
2472
2473 for (i = 0; i < srcWidth; i++)
2474 dstRow[i] = depth[i] | (dstRow[i] & 0xFF000000);
2475
2476 src += srcRowStride;
2477 dstRow += dstRowStride / sizeof(GLuint);
2478 }
2479 }
2480 }
2481 else {
2482 for (img = 0; img < srcDepth; img++) {
2483 GLuint *dstRow = (GLuint *) dstAddr
2484 + dstImageOffsets[dstZoffset + img]
2485 + dstYoffset * dstRowStride / sizeof(GLuint)
2486 + dstXoffset;
2487 const GLuint *src
2488 = (const GLuint *) _mesa_image_address(dims, srcPacking, srcAddr,
2489 srcWidth, srcHeight,
2490 srcFormat, srcType,
2491 img, 0, 0);
2492 for (row = 0; row < srcHeight; row++) {
2493 GLubyte stencil[MAX_WIDTH];
2494 GLint i;
2495 /* the 24 depth bits will be in the low position: */
2496 _mesa_unpack_depth_span(ctx, srcWidth,
2497 GL_UNSIGNED_INT, /* dst type */
2498 dstRow, /* dst addr */
2499 depthScale,
2500 srcType, src, srcPacking);
2501 /* get the 8-bit stencil values */
2502 _mesa_unpack_stencil_span(ctx, srcWidth,
2503 GL_UNSIGNED_BYTE, /* dst type */
2504 stencil, /* dst addr */
2505 srcType, src, srcPacking,
2506 ctx->_ImageTransferState);
2507 /* merge stencil values into depth values */
2508 for (i = 0; i < srcWidth; i++)
2509 dstRow[i] |= stencil[i] << 24;
2510
2511 src += srcRowStride;
2512 dstRow += dstRowStride / sizeof(GLuint);
2513 }
2514 }
2515 }
2516 return GL_TRUE;
2517 }
2518
2519 /**
2520 * Store an image in any of the formats:
2521 * _mesa_texformat_rgba_float32
2522 * _mesa_texformat_rgb_float32
2523 * _mesa_texformat_alpha_float32
2524 * _mesa_texformat_luminance_float32
2525 * _mesa_texformat_luminance_alpha_float32
2526 * _mesa_texformat_intensity_float32
2527 */
2528 GLboolean
2529 _mesa_texstore_rgba_float32(TEXSTORE_PARAMS)
2530 {
2531 const GLint components = _mesa_components_in_format(dstFormat->BaseFormat);
2532
2533 ASSERT(dstFormat == &_mesa_texformat_rgba_float32 ||
2534 dstFormat == &_mesa_texformat_rgb_float32 ||
2535 dstFormat == &_mesa_texformat_alpha_float32 ||
2536 dstFormat == &_mesa_texformat_luminance_float32 ||
2537 dstFormat == &_mesa_texformat_luminance_alpha_float32 ||
2538 dstFormat == &_mesa_texformat_intensity_float32);
2539 ASSERT(baseInternalFormat == GL_RGBA ||
2540 baseInternalFormat == GL_RGB ||
2541 baseInternalFormat == GL_ALPHA ||
2542 baseInternalFormat == GL_LUMINANCE ||
2543 baseInternalFormat == GL_LUMINANCE_ALPHA ||
2544 baseInternalFormat == GL_INTENSITY);
2545 ASSERT(dstFormat->TexelBytes == components * sizeof(GLfloat));
2546
2547 if (!ctx->_ImageTransferState &&
2548 !srcPacking->SwapBytes &&
2549 baseInternalFormat == srcFormat &&
2550 srcType == GL_FLOAT) {
2551 /* simple memcpy path */
2552 memcpy_texture(ctx, dims,
2553 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2554 dstRowStride,
2555 dstImageOffsets,
2556 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2557 srcAddr, srcPacking);
2558 }
2559 else {
2560 /* general path */
2561 const GLfloat *tempImage = make_temp_float_image(ctx, dims,
2562 baseInternalFormat,
2563 dstFormat->BaseFormat,
2564 srcWidth, srcHeight, srcDepth,
2565 srcFormat, srcType, srcAddr,
2566 srcPacking);
2567 const GLfloat *srcRow = tempImage;
2568 GLint bytesPerRow;
2569 GLint img, row;
2570 if (!tempImage)
2571 return GL_FALSE;
2572 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2573 bytesPerRow = srcWidth * components * sizeof(GLfloat);
2574 for (img = 0; img < srcDepth; img++) {
2575 GLubyte *dstRow = (GLubyte *) dstAddr
2576 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2577 + dstYoffset * dstRowStride
2578 + dstXoffset * dstFormat->TexelBytes;
2579 for (row = 0; row < srcHeight; row++) {
2580 _mesa_memcpy(dstRow, srcRow, bytesPerRow);
2581 dstRow += dstRowStride;
2582 srcRow += srcWidth * components;
2583 }
2584 }
2585
2586 _mesa_free((void *) tempImage);
2587 }
2588 return GL_TRUE;
2589 }
2590
2591
2592 /**
2593 * As above, but store 16-bit floats.
2594 */
2595 GLboolean
2596 _mesa_texstore_rgba_float16(TEXSTORE_PARAMS)
2597 {
2598 const GLint components = _mesa_components_in_format(dstFormat->BaseFormat);
2599
2600 ASSERT(dstFormat == &_mesa_texformat_rgba_float16 ||
2601 dstFormat == &_mesa_texformat_rgb_float16 ||
2602 dstFormat == &_mesa_texformat_alpha_float16 ||
2603 dstFormat == &_mesa_texformat_luminance_float16 ||
2604 dstFormat == &_mesa_texformat_luminance_alpha_float16 ||
2605 dstFormat == &_mesa_texformat_intensity_float16);
2606 ASSERT(baseInternalFormat == GL_RGBA ||
2607 baseInternalFormat == GL_RGB ||
2608 baseInternalFormat == GL_ALPHA ||
2609 baseInternalFormat == GL_LUMINANCE ||
2610 baseInternalFormat == GL_LUMINANCE_ALPHA ||
2611 baseInternalFormat == GL_INTENSITY);
2612 ASSERT(dstFormat->TexelBytes == components * sizeof(GLhalfARB));
2613
2614 if (!ctx->_ImageTransferState &&
2615 !srcPacking->SwapBytes &&
2616 baseInternalFormat == srcFormat &&
2617 srcType == GL_HALF_FLOAT_ARB) {
2618 /* simple memcpy path */
2619 memcpy_texture(ctx, dims,
2620 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2621 dstRowStride,
2622 dstImageOffsets,
2623 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2624 srcAddr, srcPacking);
2625 }
2626 else {
2627 /* general path */
2628 const GLfloat *tempImage = make_temp_float_image(ctx, dims,
2629 baseInternalFormat,
2630 dstFormat->BaseFormat,
2631 srcWidth, srcHeight, srcDepth,
2632 srcFormat, srcType, srcAddr,
2633 srcPacking);
2634 const GLfloat *src = tempImage;
2635 GLint img, row;
2636 if (!tempImage)
2637 return GL_FALSE;
2638 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2639 for (img = 0; img < srcDepth; img++) {
2640 GLubyte *dstRow = (GLubyte *) dstAddr
2641 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2642 + dstYoffset * dstRowStride
2643 + dstXoffset * dstFormat->TexelBytes;
2644 for (row = 0; row < srcHeight; row++) {
2645 GLhalfARB *dstTexel = (GLhalfARB *) dstRow;
2646 GLint i;
2647 for (i = 0; i < srcWidth * components; i++) {
2648 dstTexel[i] = _mesa_float_to_half(src[i]);
2649 }
2650 dstRow += dstRowStride;
2651 src += srcWidth * components;
2652 }
2653 }
2654
2655 _mesa_free((void *) tempImage);
2656 }
2657 return GL_TRUE;
2658 }
2659
2660
2661 #if FEATURE_EXT_texture_sRGB
2662 GLboolean
2663 _mesa_texstore_srgb8(TEXSTORE_PARAMS)
2664 {
2665 const GLboolean littleEndian = _mesa_little_endian();
2666 const struct gl_texture_format *newDstFormat;
2667 StoreTexImageFunc store;
2668 GLboolean k;
2669
2670 ASSERT(dstFormat == &_mesa_texformat_srgb8);
2671
2672 /* reuse normal rgb texstore code */
2673 if (littleEndian) {
2674 newDstFormat = &_mesa_texformat_bgr888;
2675 store = _mesa_texstore_bgr888;
2676 }
2677 else {
2678 newDstFormat = &_mesa_texformat_rgb888;
2679 store = _mesa_texstore_rgb888;
2680 }
2681
2682 k = store(ctx, dims, baseInternalFormat,
2683 newDstFormat, dstAddr,
2684 dstXoffset, dstYoffset, dstZoffset,
2685 dstRowStride, dstImageOffsets,
2686 srcWidth, srcHeight, srcDepth,
2687 srcFormat, srcType,
2688 srcAddr, srcPacking);
2689 return k;
2690 }
2691
2692
2693 GLboolean
2694 _mesa_texstore_srgba8(TEXSTORE_PARAMS)
2695 {
2696 const GLboolean littleEndian = _mesa_little_endian();
2697 const struct gl_texture_format *newDstFormat;
2698 GLboolean k;
2699
2700 ASSERT(dstFormat == &_mesa_texformat_srgba8);
2701
2702 /* reuse normal rgba texstore code */
2703 if (littleEndian)
2704 newDstFormat = &_mesa_texformat_rgba8888_rev;
2705 else
2706 newDstFormat = &_mesa_texformat_rgba8888;
2707
2708 k = _mesa_texstore_rgba8888(ctx, dims, baseInternalFormat,
2709 newDstFormat, dstAddr,
2710 dstXoffset, dstYoffset, dstZoffset,
2711 dstRowStride, dstImageOffsets,
2712 srcWidth, srcHeight, srcDepth,
2713 srcFormat, srcType,
2714 srcAddr, srcPacking);
2715 return k;
2716 }
2717
2718
2719 GLboolean
2720 _mesa_texstore_sl8(TEXSTORE_PARAMS)
2721 {
2722 const struct gl_texture_format *newDstFormat;
2723 GLboolean k;
2724
2725 ASSERT(dstFormat == &_mesa_texformat_sl8);
2726
2727 newDstFormat = &_mesa_texformat_l8;
2728
2729 /* _mesa_textore_a8 handles luminance8 too */
2730 k = _mesa_texstore_a8(ctx, dims, baseInternalFormat,
2731 newDstFormat, dstAddr,
2732 dstXoffset, dstYoffset, dstZoffset,
2733 dstRowStride, dstImageOffsets,
2734 srcWidth, srcHeight, srcDepth,
2735 srcFormat, srcType,
2736 srcAddr, srcPacking);
2737 return k;
2738 }
2739
2740
2741 GLboolean
2742 _mesa_texstore_sla8(TEXSTORE_PARAMS)
2743 {
2744 const GLboolean littleEndian = _mesa_little_endian();
2745 const struct gl_texture_format *newDstFormat;
2746 GLboolean k;
2747
2748 ASSERT(dstFormat == &_mesa_texformat_sla8);
2749
2750 /* reuse normal luminance/alpha texstore code */
2751 if (littleEndian)
2752 newDstFormat = &_mesa_texformat_al88;
2753 else
2754 newDstFormat = &_mesa_texformat_al88_rev;
2755
2756 k = _mesa_texstore_al88(ctx, dims, baseInternalFormat,
2757 newDstFormat, dstAddr,
2758 dstXoffset, dstYoffset, dstZoffset,
2759 dstRowStride, dstImageOffsets,
2760 srcWidth, srcHeight, srcDepth,
2761 srcFormat, srcType,
2762 srcAddr, srcPacking);
2763 return k;
2764 }
2765
2766 #endif /* FEATURE_EXT_texture_sRGB */
2767
2768
2769 /**
2770 * Check if an unpack PBO is active prior to fetching a texture image.
2771 * If so, do bounds checking and map the buffer into main memory.
2772 * Any errors detected will be recorded.
2773 * The caller _must_ call _mesa_unmap_teximage_pbo() too!
2774 */
2775 const GLvoid *
2776 _mesa_validate_pbo_teximage(GLcontext *ctx, GLuint dimensions,
2777 GLsizei width, GLsizei height, GLsizei depth,
2778 GLenum format, GLenum type, const GLvoid *pixels,
2779 const struct gl_pixelstore_attrib *unpack,
2780 const char *funcName)
2781 {
2782 GLubyte *buf;
2783
2784 if (unpack->BufferObj->Name == 0) {
2785 /* no PBO */
2786 return pixels;
2787 }
2788 if (!_mesa_validate_pbo_access(dimensions, unpack, width, height, depth,
2789 format, type, pixels)) {
2790 _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access");
2791 return NULL;
2792 }
2793
2794 buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
2795 GL_READ_ONLY_ARB, unpack->BufferObj);
2796 if (!buf) {
2797 _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped");
2798 return NULL;
2799 }
2800
2801 return ADD_POINTERS(buf, pixels);
2802 }
2803
2804
2805 /**
2806 * Check if an unpack PBO is active prior to fetching a compressed texture
2807 * image.
2808 * If so, do bounds checking and map the buffer into main memory.
2809 * Any errors detected will be recorded.
2810 * The caller _must_ call _mesa_unmap_teximage_pbo() too!
2811 */
2812 const GLvoid *
2813 _mesa_validate_pbo_compressed_teximage(GLcontext *ctx,
2814 GLsizei imageSize, const GLvoid *pixels,
2815 const struct gl_pixelstore_attrib *packing,
2816 const char *funcName)
2817 {
2818 GLubyte *buf;
2819
2820 if (packing->BufferObj->Name == 0) {
2821 /* not using a PBO - return pointer unchanged */
2822 return pixels;
2823 }
2824 if ((const GLubyte *) pixels + imageSize >
2825 ((const GLubyte *) 0) + packing->BufferObj->Size) {
2826 /* out of bounds read! */
2827 _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access");
2828 return NULL;
2829 }
2830
2831 buf = (GLubyte*) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
2832 GL_READ_ONLY_ARB, packing->BufferObj);
2833 if (!buf) {
2834 _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped");
2835 return NULL;
2836 }
2837
2838 return ADD_POINTERS(buf, pixels);
2839 }
2840
2841
2842 /**
2843 * This function must be called after either of the validate_pbo_*_teximage()
2844 * functions. It unmaps the PBO buffer if it was mapped earlier.
2845 */
2846 void
2847 _mesa_unmap_teximage_pbo(GLcontext *ctx,
2848 const struct gl_pixelstore_attrib *unpack)
2849 {
2850 if (unpack->BufferObj->Name) {
2851 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
2852 unpack->BufferObj);
2853 }
2854 }
2855
2856
2857
2858 /**
2859 * Adaptor for fetching a GLchan texel from a float-valued texture.
2860 */
2861 static void
2862 fetch_texel_float_to_chan(const struct gl_texture_image *texImage,
2863 GLint i, GLint j, GLint k, GLchan *texelOut)
2864 {
2865 GLfloat temp[4];
2866 ASSERT(texImage->FetchTexelf);
2867 texImage->FetchTexelf(texImage, i, j, k, temp);
2868 if (texImage->TexFormat->BaseFormat == GL_DEPTH_COMPONENT ||
2869 texImage->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT) {
2870 /* just one channel */
2871 UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);
2872 }
2873 else {
2874 /* four channels */
2875 UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);
2876 UNCLAMPED_FLOAT_TO_CHAN(texelOut[1], temp[1]);
2877 UNCLAMPED_FLOAT_TO_CHAN(texelOut[2], temp[2]);
2878 UNCLAMPED_FLOAT_TO_CHAN(texelOut[3], temp[3]);
2879 }
2880 }
2881
2882
2883 /**
2884 * Adaptor for fetching a float texel from a GLchan-valued texture.
2885 */
2886 static void
2887 fetch_texel_chan_to_float(const struct gl_texture_image *texImage,
2888 GLint i, GLint j, GLint k, GLfloat *texelOut)
2889 {
2890 GLchan temp[4];
2891 ASSERT(texImage->FetchTexelc);
2892 texImage->FetchTexelc(texImage, i, j, k, temp);
2893 if (texImage->TexFormat->BaseFormat == GL_DEPTH_COMPONENT ||
2894 texImage->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT) {
2895 /* just one channel */
2896 texelOut[0] = CHAN_TO_FLOAT(temp[0]);
2897 }
2898 else {
2899 /* four channels */
2900 texelOut[0] = CHAN_TO_FLOAT(temp[0]);
2901 texelOut[1] = CHAN_TO_FLOAT(temp[1]);
2902 texelOut[2] = CHAN_TO_FLOAT(temp[2]);
2903 texelOut[3] = CHAN_TO_FLOAT(temp[3]);
2904 }
2905 }
2906
2907
2908 /**
2909 * Initialize the texture image's FetchTexelc and FetchTexelf methods.
2910 */
2911 void
2912 _mesa_set_fetch_functions(struct gl_texture_image *texImage, GLuint dims)
2913 {
2914 ASSERT(dims == 1 || dims == 2 || dims == 3);
2915 ASSERT(texImage->TexFormat);
2916
2917 switch (dims) {
2918 case 1:
2919 texImage->FetchTexelc = texImage->TexFormat->FetchTexel1D;
2920 texImage->FetchTexelf = texImage->TexFormat->FetchTexel1Df;
2921 break;
2922 case 2:
2923 texImage->FetchTexelc = texImage->TexFormat->FetchTexel2D;
2924 texImage->FetchTexelf = texImage->TexFormat->FetchTexel2Df;
2925 break;
2926 case 3:
2927 texImage->FetchTexelc = texImage->TexFormat->FetchTexel3D;
2928 texImage->FetchTexelf = texImage->TexFormat->FetchTexel3Df;
2929 break;
2930 default:
2931 ;
2932 }
2933
2934 /* now check if we need to use a float/chan adaptor */
2935 if (!texImage->FetchTexelc) {
2936 texImage->FetchTexelc = fetch_texel_float_to_chan;
2937 }
2938 else if (!texImage->FetchTexelf) {
2939 texImage->FetchTexelf = fetch_texel_chan_to_float;
2940 }
2941
2942
2943 ASSERT(texImage->FetchTexelc);
2944 ASSERT(texImage->FetchTexelf);
2945 }
2946
2947
2948 /**
2949 * Choose the actual storage format for a new texture image.
2950 * Mainly, this is a wrapper for the driver's ChooseTextureFormat() function.
2951 * Also set some other texImage fields related to texture compression, etc.
2952 * \param ctx rendering context
2953 * \param texImage the gl_texture_image
2954 * \param dims texture dimensions (1, 2 or 3)
2955 * \param format the user-specified format parameter
2956 * \param type the user-specified type parameter
2957 * \param internalFormat the user-specified internal format hint
2958 */
2959 static void
2960 choose_texture_format(GLcontext *ctx, struct gl_texture_image *texImage,
2961 GLuint dims,
2962 GLenum format, GLenum type, GLint internalFormat)
2963 {
2964 ASSERT(dims == 1 || dims == 2 || dims == 3);
2965 ASSERT(ctx->Driver.ChooseTextureFormat);
2966
2967 texImage->TexFormat
2968 = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type);
2969
2970 ASSERT(texImage->TexFormat);
2971
2972 _mesa_set_fetch_functions(texImage, dims);
2973
2974 if (texImage->TexFormat->TexelBytes == 0) {
2975 /* must be a compressed format */
2976 texImage->IsCompressed = GL_TRUE;
2977 texImage->CompressedSize =
2978 ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
2979 texImage->Height, texImage->Depth,
2980 texImage->TexFormat->MesaFormat);
2981 }
2982 else {
2983 /* non-compressed format */
2984 texImage->IsCompressed = GL_FALSE;
2985 texImage->CompressedSize = 0;
2986 }
2987 }
2988
2989
2990
2991 /*
2992 * This is the software fallback for Driver.TexImage1D()
2993 * and Driver.CopyTexImage1D().
2994 * \sa _mesa_store_teximage2d()
2995 */
2996 void
2997 _mesa_store_teximage1d(GLcontext *ctx, GLenum target, GLint level,
2998 GLint internalFormat,
2999 GLint width, GLint border,
3000 GLenum format, GLenum type, const GLvoid *pixels,
3001 const struct gl_pixelstore_attrib *packing,
3002 struct gl_texture_object *texObj,
3003 struct gl_texture_image *texImage)
3004 {
3005 GLint postConvWidth = width;
3006 GLint sizeInBytes;
3007 (void) border;
3008
3009 if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
3010 _mesa_adjust_image_for_convolution(ctx, 1, &postConvWidth, NULL);
3011 }
3012
3013 choose_texture_format(ctx, texImage, 1, format, type, internalFormat);
3014
3015 /* allocate memory */
3016 if (texImage->IsCompressed)
3017 sizeInBytes = texImage->CompressedSize;
3018 else
3019 sizeInBytes = postConvWidth * texImage->TexFormat->TexelBytes;
3020 texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
3021 if (!texImage->Data) {
3022 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D");
3023 return;
3024 }
3025
3026 pixels = _mesa_validate_pbo_teximage(ctx, 1, width, 1, 1, format, type,
3027 pixels, packing, "glTexImage1D");
3028 if (!pixels) {
3029 /* Note: we check for a NULL image pointer here, _after_ we allocated
3030 * memory for the texture. That's what the GL spec calls for.
3031 */
3032 return;
3033 }
3034 else {
3035 const GLint dstRowStride = 0;
3036 GLboolean success;
3037 ASSERT(texImage->TexFormat->StoreImage);
3038 success = texImage->TexFormat->StoreImage(ctx, 1, texImage->_BaseFormat,
3039 texImage->TexFormat,
3040 texImage->Data,
3041 0, 0, 0, /* dstX/Y/Zoffset */
3042 dstRowStride,
3043 texImage->ImageOffsets,
3044 width, 1, 1,
3045 format, type, pixels, packing);
3046 if (!success) {
3047 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D");
3048 }
3049 }
3050
3051 /* GL_SGIS_generate_mipmap */
3052 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3053 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3054 }
3055
3056 _mesa_unmap_teximage_pbo(ctx, packing);
3057 }
3058
3059
3060 /**
3061 * This is the software fallback for Driver.TexImage2D()
3062 * and Driver.CopyTexImage2D().
3063 *
3064 * This function is oriented toward storing images in main memory, rather
3065 * than VRAM. Device driver's can easily plug in their own replacement.
3066 *
3067 * Note: width and height may be pre-convolved dimensions, but
3068 * texImage->Width and texImage->Height will be post-convolved dimensions.
3069 */
3070 void
3071 _mesa_store_teximage2d(GLcontext *ctx, GLenum target, GLint level,
3072 GLint internalFormat,
3073 GLint width, GLint height, GLint border,
3074 GLenum format, GLenum type, const void *pixels,
3075 const struct gl_pixelstore_attrib *packing,
3076 struct gl_texture_object *texObj,
3077 struct gl_texture_image *texImage)
3078 {
3079 GLint postConvWidth = width, postConvHeight = height;
3080 GLint texelBytes, sizeInBytes;
3081 (void) border;
3082
3083 if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
3084 _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth,
3085 &postConvHeight);
3086 }
3087
3088 choose_texture_format(ctx, texImage, 2, format, type, internalFormat);
3089
3090 texelBytes = texImage->TexFormat->TexelBytes;
3091
3092 /* allocate memory */
3093 if (texImage->IsCompressed)
3094 sizeInBytes = texImage->CompressedSize;
3095 else
3096 sizeInBytes = postConvWidth * postConvHeight * texelBytes;
3097 texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
3098 if (!texImage->Data) {
3099 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
3100 return;
3101 }
3102
3103 pixels = _mesa_validate_pbo_teximage(ctx, 2, width, height, 1, format, type,
3104 pixels, packing, "glTexImage2D");
3105 if (!pixels) {
3106 /* Note: we check for a NULL image pointer here, _after_ we allocated
3107 * memory for the texture. That's what the GL spec calls for.
3108 */
3109 return;
3110 }
3111 else {
3112 GLint dstRowStride;
3113 GLboolean success;
3114 if (texImage->IsCompressed) {
3115 dstRowStride
3116 = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
3117 }
3118 else {
3119 dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes;
3120 }
3121 ASSERT(texImage->TexFormat->StoreImage);
3122 success = texImage->TexFormat->StoreImage(ctx, 2, texImage->_BaseFormat,
3123 texImage->TexFormat,
3124 texImage->Data,
3125 0, 0, 0, /* dstX/Y/Zoffset */
3126 dstRowStride,
3127 texImage->ImageOffsets,
3128 width, height, 1,
3129 format, type, pixels, packing);
3130 if (!success) {
3131 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
3132 }
3133 }
3134
3135 /* GL_SGIS_generate_mipmap */
3136 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3137 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3138 }
3139
3140 _mesa_unmap_teximage_pbo(ctx, packing);
3141 }
3142
3143
3144
3145 /**
3146 * This is the software fallback for Driver.TexImage3D()
3147 * and Driver.CopyTexImage3D().
3148 * \sa _mesa_store_teximage2d()
3149 */
3150 void
3151 _mesa_store_teximage3d(GLcontext *ctx, GLenum target, GLint level,
3152 GLint internalFormat,
3153 GLint width, GLint height, GLint depth, GLint border,
3154 GLenum format, GLenum type, const void *pixels,
3155 const struct gl_pixelstore_attrib *packing,
3156 struct gl_texture_object *texObj,
3157 struct gl_texture_image *texImage)
3158 {
3159 GLint texelBytes, sizeInBytes;
3160 (void) border;
3161
3162 choose_texture_format(ctx, texImage, 3, format, type, internalFormat);
3163
3164 texelBytes = texImage->TexFormat->TexelBytes;
3165
3166 /* allocate memory */
3167 if (texImage->IsCompressed)
3168 sizeInBytes = texImage->CompressedSize;
3169 else
3170 sizeInBytes = width * height * depth * texelBytes;
3171 texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
3172 if (!texImage->Data) {
3173 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D");
3174 return;
3175 }
3176
3177 pixels = _mesa_validate_pbo_teximage(ctx, 3, width, height, depth, format,
3178 type, pixels, packing, "glTexImage3D");
3179 if (!pixels) {
3180 /* Note: we check for a NULL image pointer here, _after_ we allocated
3181 * memory for the texture. That's what the GL spec calls for.
3182 */
3183 return;
3184 }
3185 else {
3186 GLint dstRowStride;
3187 GLboolean success;
3188 if (texImage->IsCompressed) {
3189 dstRowStride
3190 = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
3191 }
3192 else {
3193 dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes;
3194 }
3195 ASSERT(texImage->TexFormat->StoreImage);
3196 success = texImage->TexFormat->StoreImage(ctx, 3, texImage->_BaseFormat,
3197 texImage->TexFormat,
3198 texImage->Data,
3199 0, 0, 0, /* dstX/Y/Zoffset */
3200 dstRowStride,
3201 texImage->ImageOffsets,
3202 width, height, depth,
3203 format, type, pixels, packing);
3204 if (!success) {
3205 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D");
3206 }
3207 }
3208
3209 /* GL_SGIS_generate_mipmap */
3210 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3211 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3212 }
3213
3214 _mesa_unmap_teximage_pbo(ctx, packing);
3215 }
3216
3217
3218
3219
3220 /*
3221 * This is the software fallback for Driver.TexSubImage1D()
3222 * and Driver.CopyTexSubImage1D().
3223 */
3224 void
3225 _mesa_store_texsubimage1d(GLcontext *ctx, GLenum target, GLint level,
3226 GLint xoffset, GLint width,
3227 GLenum format, GLenum type, const void *pixels,
3228 const struct gl_pixelstore_attrib *packing,
3229 struct gl_texture_object *texObj,
3230 struct gl_texture_image *texImage)
3231 {
3232 /* get pointer to src pixels (may be in a pbo which we'll map here) */
3233 pixels = _mesa_validate_pbo_teximage(ctx, 1, width, 1, 1, format, type,
3234 pixels, packing, "glTexSubImage1D");
3235 if (!pixels)
3236 return;
3237
3238 {
3239 const GLint dstRowStride = 0;
3240 GLboolean success;
3241 ASSERT(texImage->TexFormat->StoreImage);
3242 success = texImage->TexFormat->StoreImage(ctx, 1, texImage->_BaseFormat,
3243 texImage->TexFormat,
3244 texImage->Data,
3245 xoffset, 0, 0, /* offsets */
3246 dstRowStride,
3247 texImage->ImageOffsets,
3248 width, 1, 1,
3249 format, type, pixels, packing);
3250 if (!success) {
3251 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage1D");
3252 }
3253 }
3254
3255 /* GL_SGIS_generate_mipmap */
3256 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3257 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3258 }
3259
3260 _mesa_unmap_teximage_pbo(ctx, packing);
3261 }
3262
3263
3264
3265 /**
3266 * This is the software fallback for Driver.TexSubImage2D()
3267 * and Driver.CopyTexSubImage2D().
3268 */
3269 void
3270 _mesa_store_texsubimage2d(GLcontext *ctx, GLenum target, GLint level,
3271 GLint xoffset, GLint yoffset,
3272 GLint width, GLint height,
3273 GLenum format, GLenum type, const void *pixels,
3274 const struct gl_pixelstore_attrib *packing,
3275 struct gl_texture_object *texObj,
3276 struct gl_texture_image *texImage)
3277 {
3278 /* get pointer to src pixels (may be in a pbo which we'll map here) */
3279 pixels = _mesa_validate_pbo_teximage(ctx, 2, width, height, 1, format, type,
3280 pixels, packing, "glTexSubImage2D");
3281 if (!pixels)
3282 return;
3283
3284 {
3285 GLint dstRowStride = 0;
3286 GLboolean success;
3287 if (texImage->IsCompressed) {
3288 dstRowStride = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat,
3289 texImage->Width);
3290 }
3291 else {
3292 dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes;
3293 }
3294 ASSERT(texImage->TexFormat->StoreImage);
3295 success = texImage->TexFormat->StoreImage(ctx, 2, texImage->_BaseFormat,
3296 texImage->TexFormat,
3297 texImage->Data,
3298 xoffset, yoffset, 0,
3299 dstRowStride,
3300 texImage->ImageOffsets,
3301 width, height, 1,
3302 format, type, pixels, packing);
3303 if (!success) {
3304 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage2D");
3305 }
3306 }
3307
3308 /* GL_SGIS_generate_mipmap */
3309 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3310 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3311 }
3312
3313 _mesa_unmap_teximage_pbo(ctx, packing);
3314 }
3315
3316
3317 /*
3318 * This is the software fallback for Driver.TexSubImage3D().
3319 * and Driver.CopyTexSubImage3D().
3320 */
3321 void
3322 _mesa_store_texsubimage3d(GLcontext *ctx, GLenum target, GLint level,
3323 GLint xoffset, GLint yoffset, GLint zoffset,
3324 GLint width, GLint height, GLint depth,
3325 GLenum format, GLenum type, const void *pixels,
3326 const struct gl_pixelstore_attrib *packing,
3327 struct gl_texture_object *texObj,
3328 struct gl_texture_image *texImage)
3329 {
3330 /* get pointer to src pixels (may be in a pbo which we'll map here) */
3331 pixels = _mesa_validate_pbo_teximage(ctx, 3, width, height, depth, format,
3332 type, pixels, packing,
3333 "glTexSubImage3D");
3334 if (!pixels)
3335 return;
3336
3337 {
3338 GLint dstRowStride;
3339 GLboolean success;
3340 if (texImage->IsCompressed) {
3341 dstRowStride = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat,
3342 texImage->Width);
3343 }
3344 else {
3345 dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes;
3346 }
3347 ASSERT(texImage->TexFormat->StoreImage);
3348 success = texImage->TexFormat->StoreImage(ctx, 3, texImage->_BaseFormat,
3349 texImage->TexFormat,
3350 texImage->Data,
3351 xoffset, yoffset, zoffset,
3352 dstRowStride,
3353 texImage->ImageOffsets,
3354 width, height, depth,
3355 format, type, pixels, packing);
3356 if (!success) {
3357 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage3D");
3358 }
3359 }
3360
3361 /* GL_SGIS_generate_mipmap */
3362 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3363 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3364 }
3365
3366 _mesa_unmap_teximage_pbo(ctx, packing);
3367 }
3368
3369
3370 /*
3371 * Fallback for Driver.CompressedTexImage1D()
3372 */
3373 void
3374 _mesa_store_compressed_teximage1d(GLcontext *ctx, GLenum target, GLint level,
3375 GLint internalFormat,
3376 GLint width, GLint border,
3377 GLsizei imageSize, const GLvoid *data,
3378 struct gl_texture_object *texObj,
3379 struct gl_texture_image *texImage)
3380 {
3381 /* this space intentionally left blank */
3382 (void) ctx;
3383 (void) target; (void) level;
3384 (void) internalFormat;
3385 (void) width; (void) border;
3386 (void) imageSize; (void) data;
3387 (void) texObj;
3388 (void) texImage;
3389 }
3390
3391
3392
3393 /**
3394 * Fallback for Driver.CompressedTexImage2D()
3395 */
3396 void
3397 _mesa_store_compressed_teximage2d(GLcontext *ctx, GLenum target, GLint level,
3398 GLint internalFormat,
3399 GLint width, GLint height, GLint border,
3400 GLsizei imageSize, const GLvoid *data,
3401 struct gl_texture_object *texObj,
3402 struct gl_texture_image *texImage)
3403 {
3404 (void) width; (void) height; (void) border;
3405
3406 /* This is pretty simple, basically just do a memcpy without worrying
3407 * about the usual image unpacking or image transfer operations.
3408 */
3409 ASSERT(texObj);
3410 ASSERT(texImage);
3411 ASSERT(texImage->Width > 0);
3412 ASSERT(texImage->Height > 0);
3413 ASSERT(texImage->Depth == 1);
3414 ASSERT(texImage->Data == NULL); /* was freed in glCompressedTexImage2DARB */
3415
3416 choose_texture_format(ctx, texImage, 2, 0, 0, internalFormat);
3417
3418 /* allocate storage */
3419 texImage->Data = _mesa_alloc_texmemory(imageSize);
3420 if (!texImage->Data) {
3421 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2DARB");
3422 return;
3423 }
3424
3425 data = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, data,
3426 &ctx->Unpack,
3427 "glCompressedTexImage2D");
3428 if (!data)
3429 return;
3430
3431 /* copy the data */
3432 ASSERT(texImage->CompressedSize == (GLuint) imageSize);
3433 MEMCPY(texImage->Data, data, imageSize);
3434
3435 /* GL_SGIS_generate_mipmap */
3436 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3437 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3438 }
3439
3440 _mesa_unmap_teximage_pbo(ctx, &ctx->Unpack);
3441 }
3442
3443
3444
3445 /*
3446 * Fallback for Driver.CompressedTexImage3D()
3447 */
3448 void
3449 _mesa_store_compressed_teximage3d(GLcontext *ctx, GLenum target, GLint level,
3450 GLint internalFormat,
3451 GLint width, GLint height, GLint depth,
3452 GLint border,
3453 GLsizei imageSize, const GLvoid *data,
3454 struct gl_texture_object *texObj,
3455 struct gl_texture_image *texImage)
3456 {
3457 /* this space intentionally left blank */
3458 (void) ctx;
3459 (void) target; (void) level;
3460 (void) internalFormat;
3461 (void) width; (void) height; (void) depth;
3462 (void) border;
3463 (void) imageSize; (void) data;
3464 (void) texObj;
3465 (void) texImage;
3466 }
3467
3468
3469
3470 /**
3471 * Fallback for Driver.CompressedTexSubImage1D()
3472 */
3473 void
3474 _mesa_store_compressed_texsubimage1d(GLcontext *ctx, GLenum target,
3475 GLint level,
3476 GLint xoffset, GLsizei width,
3477 GLenum format,
3478 GLsizei imageSize, const GLvoid *data,
3479 struct gl_texture_object *texObj,
3480 struct gl_texture_image *texImage)
3481 {
3482 /* there are no compressed 1D texture formats yet */
3483 (void) ctx;
3484 (void) target; (void) level;
3485 (void) xoffset; (void) width;
3486 (void) format;
3487 (void) imageSize; (void) data;
3488 (void) texObj;
3489 (void) texImage;
3490 }
3491
3492
3493 /**
3494 * Fallback for Driver.CompressedTexSubImage2D()
3495 */
3496 void
3497 _mesa_store_compressed_texsubimage2d(GLcontext *ctx, GLenum target,
3498 GLint level,
3499 GLint xoffset, GLint yoffset,
3500 GLsizei width, GLsizei height,
3501 GLenum format,
3502 GLsizei imageSize, const GLvoid *data,
3503 struct gl_texture_object *texObj,
3504 struct gl_texture_image *texImage)
3505 {
3506 GLint bytesPerRow, destRowStride, srcRowStride;
3507 GLint i, rows;
3508 GLubyte *dest;
3509 const GLubyte *src;
3510 const GLuint mesaFormat = texImage->TexFormat->MesaFormat;
3511
3512 (void) format;
3513
3514 /* these should have been caught sooner */
3515 ASSERT((width & 3) == 0 || width == 2 || width == 1);
3516 ASSERT((height & 3) == 0 || height == 2 || height == 1);
3517 ASSERT((xoffset & 3) == 0);
3518 ASSERT((yoffset & 3) == 0);
3519
3520 /* get pointer to src pixels (may be in a pbo which we'll map here) */
3521 data = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, data,
3522 &ctx->Unpack,
3523 "glCompressedTexSubImage2D");
3524 if (!data)
3525 return;
3526
3527 srcRowStride = _mesa_compressed_row_stride(mesaFormat, width);
3528 src = (const GLubyte *) data;
3529
3530 destRowStride = _mesa_compressed_row_stride(mesaFormat, texImage->Width);
3531 dest = _mesa_compressed_image_address(xoffset, yoffset, 0,
3532 texImage->TexFormat->MesaFormat,
3533 texImage->Width,
3534 (GLubyte *) texImage->Data);
3535
3536 bytesPerRow = srcRowStride;
3537 rows = height / 4;
3538
3539 for (i = 0; i < rows; i++) {
3540 MEMCPY(dest, src, bytesPerRow);
3541 dest += destRowStride;
3542 src += srcRowStride;
3543 }
3544
3545 /* GL_SGIS_generate_mipmap */
3546 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3547 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3548 }
3549
3550 _mesa_unmap_teximage_pbo(ctx, &ctx->Unpack);
3551 }
3552
3553
3554 /**
3555 * Fallback for Driver.CompressedTexSubImage3D()
3556 */
3557 void
3558 _mesa_store_compressed_texsubimage3d(GLcontext *ctx, GLenum target,
3559 GLint level,
3560 GLint xoffset, GLint yoffset, GLint zoffset,
3561 GLsizei width, GLsizei height, GLsizei depth,
3562 GLenum format,
3563 GLsizei imageSize, const GLvoid *data,
3564 struct gl_texture_object *texObj,
3565 struct gl_texture_image *texImage)
3566 {
3567 /* there are no compressed 3D texture formats yet */
3568 (void) ctx;
3569 (void) target; (void) level;
3570 (void) xoffset; (void) yoffset; (void) zoffset;
3571 (void) width; (void) height; (void) depth;
3572 (void) format;
3573 (void) imageSize; (void) data;
3574 (void) texObj;
3575 (void) texImage;
3576 }
3577
3578
3579
3580
3581 #if FEATURE_EXT_texture_sRGB
3582
3583 /**
3584 * Test if given texture image is an sRGB format.
3585 */
3586 static GLboolean
3587 is_srgb_teximage(const struct gl_texture_image *texImage)
3588 {
3589 switch (texImage->TexFormat->MesaFormat) {
3590 case MESA_FORMAT_SRGB8:
3591 case MESA_FORMAT_SRGBA8:
3592 case MESA_FORMAT_SL8:
3593 case MESA_FORMAT_SLA8:
3594 return GL_TRUE;
3595 default:
3596 return GL_FALSE;
3597 }
3598 }
3599
3600 #endif /* FEATURE_EXT_texture_sRGB */
3601
3602
3603 /**
3604 * This is the software fallback for Driver.GetTexImage().
3605 * All error checking will have been done before this routine is called.
3606 */
3607 void
3608 _mesa_get_teximage(GLcontext *ctx, GLenum target, GLint level,
3609 GLenum format, GLenum type, GLvoid *pixels,
3610 struct gl_texture_object *texObj,
3611 struct gl_texture_image *texImage)
3612 {
3613 const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
3614
3615 if (ctx->Pack.BufferObj->Name) {
3616 /* Packing texture image into a PBO.
3617 * Map the (potentially) VRAM-based buffer into our process space so
3618 * we can write into it with the code below.
3619 * A hardware driver might use a sophisticated blit to move the
3620 * texture data to the PBO if the PBO is in VRAM along with the texture.
3621 */
3622 GLubyte *buf = (GLubyte *)
3623 ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
3624 GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);
3625 if (!buf) {
3626 /* buffer is already mapped - that's an error */
3627 _mesa_error(ctx, GL_INVALID_OPERATION,"glGetTexImage(PBO is mapped)");
3628 return;
3629 }
3630 /* <pixels> was an offset into the PBO.
3631 * Now make it a real, client-side pointer inside the mapped region.
3632 */
3633 pixels = ADD_POINTERS(buf, pixels);
3634 }
3635 else if (!pixels) {
3636 /* not an error */
3637 return;
3638 }
3639
3640 {
3641 const GLint width = texImage->Width;
3642 const GLint height = texImage->Height;
3643 const GLint depth = texImage->Depth;
3644 GLint img, row;
3645 for (img = 0; img < depth; img++) {
3646 for (row = 0; row < height; row++) {
3647 /* compute destination address in client memory */
3648 GLvoid *dest = _mesa_image_address( dimensions, &ctx->Pack, pixels,
3649 width, height, format, type,
3650 img, row, 0);
3651 assert(dest);
3652
3653 if (format == GL_COLOR_INDEX) {
3654 GLuint indexRow[MAX_WIDTH];
3655 GLint col;
3656 /* Can't use FetchTexel here because that returns RGBA */
3657 if (texImage->TexFormat->IndexBits == 8) {
3658 const GLubyte *src = (const GLubyte *) texImage->Data;
3659 src += width * (img * texImage->Height + row);
3660 for (col = 0; col < width; col++) {
3661 indexRow[col] = src[col];
3662 }
3663 }
3664 else if (texImage->TexFormat->IndexBits == 16) {
3665 const GLushort *src = (const GLushort *) texImage->Data;
3666 src += width * (img * texImage->Height + row);
3667 for (col = 0; col < width; col++) {
3668 indexRow[col] = src[col];
3669 }
3670 }
3671 else {
3672 _mesa_problem(ctx,
3673 "Color index problem in _mesa_GetTexImage");
3674 }
3675 _mesa_pack_index_span(ctx, width, type, dest,
3676 indexRow, &ctx->Pack,
3677 0 /* no image transfer */);
3678 }
3679 else if (format == GL_DEPTH_COMPONENT) {
3680 GLfloat depthRow[MAX_WIDTH];
3681 GLint col;
3682 for (col = 0; col < width; col++) {
3683 (*texImage->FetchTexelf)(texImage, col, row, img,
3684 depthRow + col);
3685 }
3686 _mesa_pack_depth_span(ctx, width, dest, type,
3687 depthRow, &ctx->Pack);
3688 }
3689 else if (format == GL_DEPTH_STENCIL_EXT) {
3690 /* XXX Note: we're bypassing texImage->FetchTexel()! */
3691 const GLuint *src = (const GLuint *) texImage->Data;
3692 src += width * row + width * height * img;
3693 _mesa_memcpy(dest, src, width * sizeof(GLuint));
3694 if (ctx->Pack.SwapBytes) {
3695 _mesa_swap4((GLuint *) dest, width);
3696 }
3697 }
3698 else if (format == GL_YCBCR_MESA) {
3699 /* No pixel transfer */
3700 const GLint rowstride = texImage->RowStride;
3701 MEMCPY(dest,
3702 (const GLushort *) texImage->Data + row * rowstride,
3703 width * sizeof(GLushort));
3704 /* check for byte swapping */
3705 if ((texImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR
3706 && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) ||
3707 (texImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV
3708 && type == GL_UNSIGNED_SHORT_8_8_MESA)) {
3709 if (!ctx->Pack.SwapBytes)
3710 _mesa_swap2((GLushort *) dest, width);
3711 }
3712 else if (ctx->Pack.SwapBytes) {
3713 _mesa_swap2((GLushort *) dest, width);
3714 }
3715 }
3716 #if FEATURE_EXT_texture_sRGB
3717 else if (is_srgb_teximage(texImage)) {
3718 /* no pixel transfer and no non-linear to linear conversion */
3719 const GLint comps = texImage->TexFormat->TexelBytes;
3720 const GLint rowstride = comps * texImage->RowStride;
3721 MEMCPY(dest,
3722 (const GLubyte *) texImage->Data + row * rowstride,
3723 comps * width * sizeof(GLubyte));
3724 }
3725 #endif /* FEATURE_EXT_texture_sRGB */
3726 else {
3727 /* general case: convert row to RGBA format */
3728 GLfloat rgba[MAX_WIDTH][4];
3729 GLint col;
3730 for (col = 0; col < width; col++) {
3731 (*texImage->FetchTexelf)(texImage, col, row, img, rgba[col]);
3732 if (texImage->TexFormat->BaseFormat == GL_ALPHA) {
3733 rgba[col][RCOMP] = 0.0;
3734 rgba[col][GCOMP] = 0.0;
3735 rgba[col][BCOMP] = 0.0;
3736 }
3737 else if (texImage->TexFormat->BaseFormat == GL_LUMINANCE) {
3738 rgba[col][GCOMP] = 0.0;
3739 rgba[col][BCOMP] = 0.0;
3740 rgba[col][ACOMP] = 1.0;
3741 }
3742 else if (texImage->TexFormat->BaseFormat == GL_LUMINANCE_ALPHA) {
3743 rgba[col][GCOMP] = 0.0;
3744 rgba[col][BCOMP] = 0.0;
3745 }
3746 else if (texImage->TexFormat->BaseFormat == GL_INTENSITY) {
3747 rgba[col][GCOMP] = 0.0;
3748 rgba[col][BCOMP] = 0.0;
3749 rgba[col][ACOMP] = 1.0;
3750 }
3751 }
3752 _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
3753 format, type, dest,
3754 &ctx->Pack, 0x0 /*image xfer ops*/);
3755 } /* format */
3756 } /* row */
3757 } /* img */
3758 }
3759
3760 if (ctx->Pack.BufferObj->Name) {
3761 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
3762 ctx->Pack.BufferObj);
3763 }
3764 }
3765
3766
3767
3768 /**
3769 * This is the software fallback for Driver.GetCompressedTexImage().
3770 * All error checking will have been done before this routine is called.
3771 */
3772 void
3773 _mesa_get_compressed_teximage(GLcontext *ctx, GLenum target, GLint level,
3774 GLvoid *img,
3775 struct gl_texture_object *texObj,
3776 struct gl_texture_image *texImage)
3777 {
3778 GLuint size;
3779
3780 if (ctx->Pack.BufferObj->Name) {
3781 /* pack texture image into a PBO */
3782 GLubyte *buf;
3783 if ((const GLubyte *) img + texImage->CompressedSize >
3784 (const GLubyte *) ctx->Pack.BufferObj->Size) {
3785 _mesa_error(ctx, GL_INVALID_OPERATION,
3786 "glGetCompressedTexImage(invalid PBO access)");
3787 return;
3788 }
3789 buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
3790 GL_WRITE_ONLY_ARB,
3791 ctx->Pack.BufferObj);
3792 if (!buf) {
3793 /* buffer is already mapped - that's an error */
3794 _mesa_error(ctx, GL_INVALID_OPERATION,
3795 "glGetCompressedTexImage(PBO is mapped)");
3796 return;
3797 }
3798 img = ADD_POINTERS(buf, img);
3799 }
3800 else if (!img) {
3801 /* not an error */
3802 return;
3803 }
3804
3805 /* don't use texImage->CompressedSize since that may be padded out */
3806 size = _mesa_compressed_texture_size(ctx, texImage->Width, texImage->Height,
3807 texImage->Depth,
3808 texImage->TexFormat->MesaFormat);
3809
3810 /* just memcpy, no pixelstore or pixel transfer */
3811 _mesa_memcpy(img, texImage->Data, size);
3812
3813 if (ctx->Pack.BufferObj->Name) {
3814 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
3815 ctx->Pack.BufferObj);
3816 }
3817 }