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Merge branch 'master' into gallium-0.2
[mesa.git] / src / mesa / main / texstore.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.1
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] = ((0xff << 24) |
1540 (srcRow[col * 3 + RCOMP] << 16) |
1541 (srcRow[col * 3 + GCOMP] << 8) |
1542 (srcRow[col * 3 + BCOMP] << 0));
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 littleEndian) {
1556 /* same as above case, but src data has alpha too */
1557 GLint img, row, col;
1558 /* For some reason, streaming copies to write-combined regions
1559 * are extremely sensitive to the characteristics of how the
1560 * source data is retrieved. By reordering the source reads to
1561 * be in-order, the speed of this operation increases by half.
1562 * Strangely the same isn't required for the RGB path, above.
1563 */
1564 for (img = 0; img < srcDepth; img++) {
1565 const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
1566 srcWidth, srcFormat, srcType);
1567 GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking,
1568 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0);
1569 GLubyte *dstRow = (GLubyte *) dstAddr
1570 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1571 + dstYoffset * dstRowStride
1572 + dstXoffset * dstFormat->TexelBytes;
1573 for (row = 0; row < srcHeight; row++) {
1574 GLuint *d4 = (GLuint *) dstRow;
1575 for (col = 0; col < srcWidth; col++) {
1576 d4[col] = ((srcRow[col * 4 + ACOMP] << 24) |
1577 (srcRow[col * 4 + RCOMP] << 16) |
1578 (srcRow[col * 4 + GCOMP] << 8) |
1579 (srcRow[col * 4 + BCOMP] << 0));
1580 }
1581 dstRow += dstRowStride;
1582 srcRow += srcRowStride;
1583 }
1584 }
1585 }
1586 else if (!ctx->_ImageTransferState &&
1587 !srcPacking->SwapBytes &&
1588 dstFormat == &_mesa_texformat_argb8888 &&
1589 srcFormat == GL_RGBA &&
1590 baseInternalFormat == GL_RGBA &&
1591 srcType == GL_UNSIGNED_BYTE) {
1592
1593 GLint img, row, col;
1594 for (img = 0; img < srcDepth; img++) {
1595 const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
1596 srcWidth, srcFormat, srcType);
1597 GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking,
1598 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0);
1599 GLubyte *dstRow = (GLubyte *) dstAddr
1600 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1601 + dstYoffset * dstRowStride
1602 + dstXoffset * dstFormat->TexelBytes;
1603 for (row = 0; row < srcHeight; row++) {
1604 for (col = 0; col < srcWidth; col++) {
1605 dstRow[col * 4 + 0] = srcRow[col * 4 + BCOMP];
1606 dstRow[col * 4 + 1] = srcRow[col * 4 + GCOMP];
1607 dstRow[col * 4 + 2] = srcRow[col * 4 + RCOMP];
1608 dstRow[col * 4 + 3] = srcRow[col * 4 + ACOMP];
1609 }
1610 dstRow += dstRowStride;
1611 srcRow += srcRowStride;
1612 }
1613 }
1614 }
1615 else if (!ctx->_ImageTransferState &&
1616 (srcType == GL_UNSIGNED_BYTE ||
1617 srcType == GL_UNSIGNED_INT_8_8_8_8 ||
1618 srcType == GL_UNSIGNED_INT_8_8_8_8_REV) &&
1619 can_swizzle(baseInternalFormat) &&
1620 can_swizzle(srcFormat)) {
1621
1622 GLubyte dstmap[4];
1623
1624 /* dstmap - how to swizzle from RGBA to dst format:
1625 */
1626 if ((littleEndian && dstFormat == &_mesa_texformat_argb8888) ||
1627 (!littleEndian && dstFormat == &_mesa_texformat_argb8888_rev)) {
1628 dstmap[3] = 3; /* alpha */
1629 dstmap[2] = 0; /* red */
1630 dstmap[1] = 1; /* green */
1631 dstmap[0] = 2; /* blue */
1632 }
1633 else {
1634 assert((littleEndian && dstFormat == &_mesa_texformat_argb8888_rev) ||
1635 (!littleEndian && dstFormat == &_mesa_texformat_argb8888));
1636 dstmap[3] = 2;
1637 dstmap[2] = 1;
1638 dstmap[1] = 0;
1639 dstmap[0] = 3;
1640 }
1641
1642 _mesa_swizzle_ubyte_image(ctx, dims,
1643 srcFormat,
1644 srcType,
1645
1646 baseInternalFormat,
1647 dstmap, 4,
1648 dstAddr, dstXoffset, dstYoffset, dstZoffset,
1649 dstRowStride,
1650 dstImageOffsets,
1651 srcWidth, srcHeight, srcDepth, srcAddr,
1652 srcPacking);
1653 }
1654 else {
1655 /* general path */
1656 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1657 baseInternalFormat,
1658 dstFormat->BaseFormat,
1659 srcWidth, srcHeight, srcDepth,
1660 srcFormat, srcType, srcAddr,
1661 srcPacking);
1662 const GLchan *src = tempImage;
1663 GLint img, row, col;
1664 if (!tempImage)
1665 return GL_FALSE;
1666 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1667 for (img = 0; img < srcDepth; img++) {
1668 GLubyte *dstRow = (GLubyte *) dstAddr
1669 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1670 + dstYoffset * dstRowStride
1671 + dstXoffset * dstFormat->TexelBytes;
1672 for (row = 0; row < srcHeight; row++) {
1673 GLuint *dstUI = (GLuint *) dstRow;
1674 if (dstFormat == &_mesa_texformat_argb8888) {
1675 for (col = 0; col < srcWidth; col++) {
1676 dstUI[col] = PACK_COLOR_8888( CHAN_TO_UBYTE(src[ACOMP]),
1677 CHAN_TO_UBYTE(src[RCOMP]),
1678 CHAN_TO_UBYTE(src[GCOMP]),
1679 CHAN_TO_UBYTE(src[BCOMP]) );
1680 src += 4;
1681 }
1682 }
1683 else {
1684 for (col = 0; col < srcWidth; col++) {
1685 dstUI[col] = PACK_COLOR_8888_REV( CHAN_TO_UBYTE(src[ACOMP]),
1686 CHAN_TO_UBYTE(src[RCOMP]),
1687 CHAN_TO_UBYTE(src[GCOMP]),
1688 CHAN_TO_UBYTE(src[BCOMP]) );
1689 src += 4;
1690 }
1691 }
1692 dstRow += dstRowStride;
1693 }
1694 }
1695 _mesa_free((void *) tempImage);
1696 }
1697 return GL_TRUE;
1698 }
1699
1700
1701 GLboolean
1702 _mesa_texstore_rgb888(TEXSTORE_PARAMS)
1703 {
1704 const GLboolean littleEndian = _mesa_little_endian();
1705
1706 ASSERT(dstFormat == &_mesa_texformat_rgb888);
1707 ASSERT(dstFormat->TexelBytes == 3);
1708
1709 if (!ctx->_ImageTransferState &&
1710 !srcPacking->SwapBytes &&
1711 baseInternalFormat == GL_RGB &&
1712 srcFormat == GL_BGR &&
1713 srcType == GL_UNSIGNED_BYTE &&
1714 littleEndian) {
1715 /* simple memcpy path */
1716 memcpy_texture(ctx, dims,
1717 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1718 dstRowStride,
1719 dstImageOffsets,
1720 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1721 srcAddr, srcPacking);
1722 }
1723 else if (!ctx->_ImageTransferState &&
1724 !srcPacking->SwapBytes &&
1725 srcFormat == GL_RGBA &&
1726 srcType == GL_UNSIGNED_BYTE) {
1727 /* extract RGB from RGBA */
1728 GLint img, row, col;
1729 for (img = 0; img < srcDepth; img++) {
1730 const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
1731 srcWidth, srcFormat, srcType);
1732 GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking,
1733 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0);
1734 GLubyte *dstRow = (GLubyte *) dstAddr
1735 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1736 + dstYoffset * dstRowStride
1737 + dstXoffset * dstFormat->TexelBytes;
1738 for (row = 0; row < srcHeight; row++) {
1739 for (col = 0; col < srcWidth; col++) {
1740 dstRow[col * 3 + 0] = srcRow[col * 4 + BCOMP];
1741 dstRow[col * 3 + 1] = srcRow[col * 4 + GCOMP];
1742 dstRow[col * 3 + 2] = srcRow[col * 4 + RCOMP];
1743 }
1744 dstRow += dstRowStride;
1745 srcRow += srcRowStride;
1746 }
1747 }
1748 }
1749 else if (!ctx->_ImageTransferState &&
1750 srcType == GL_UNSIGNED_BYTE &&
1751 can_swizzle(baseInternalFormat) &&
1752 can_swizzle(srcFormat)) {
1753
1754 GLubyte dstmap[4];
1755
1756 /* dstmap - how to swizzle from RGBA to dst format:
1757 */
1758 dstmap[0] = 2;
1759 dstmap[1] = 1;
1760 dstmap[2] = 0;
1761 dstmap[3] = ONE; /* ? */
1762
1763 _mesa_swizzle_ubyte_image(ctx, dims,
1764 srcFormat,
1765 srcType,
1766 baseInternalFormat,
1767 dstmap, 3,
1768 dstAddr, dstXoffset, dstYoffset, dstZoffset,
1769 dstRowStride, dstImageOffsets,
1770 srcWidth, srcHeight, srcDepth, srcAddr,
1771 srcPacking);
1772 }
1773 else {
1774 /* general path */
1775 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1776 baseInternalFormat,
1777 dstFormat->BaseFormat,
1778 srcWidth, srcHeight, srcDepth,
1779 srcFormat, srcType, srcAddr,
1780 srcPacking);
1781 const GLchan *src = (const GLchan *) tempImage;
1782 GLint img, row, col;
1783 if (!tempImage)
1784 return GL_FALSE;
1785 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1786 for (img = 0; img < srcDepth; img++) {
1787 GLubyte *dstRow = (GLubyte *) dstAddr
1788 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1789 + dstYoffset * dstRowStride
1790 + dstXoffset * dstFormat->TexelBytes;
1791 for (row = 0; row < srcHeight; row++) {
1792 #if 0
1793 if (littleEndian) {
1794 for (col = 0; col < srcWidth; col++) {
1795 dstRow[col * 3 + 0] = CHAN_TO_UBYTE(src[RCOMP]);
1796 dstRow[col * 3 + 1] = CHAN_TO_UBYTE(src[GCOMP]);
1797 dstRow[col * 3 + 2] = CHAN_TO_UBYTE(src[BCOMP]);
1798 srcUB += 3;
1799 }
1800 }
1801 else {
1802 for (col = 0; col < srcWidth; col++) {
1803 dstRow[col * 3 + 0] = srcUB[BCOMP];
1804 dstRow[col * 3 + 1] = srcUB[GCOMP];
1805 dstRow[col * 3 + 2] = srcUB[RCOMP];
1806 srcUB += 3;
1807 }
1808 }
1809 #else
1810 for (col = 0; col < srcWidth; col++) {
1811 dstRow[col * 3 + 0] = CHAN_TO_UBYTE(src[BCOMP]);
1812 dstRow[col * 3 + 1] = CHAN_TO_UBYTE(src[GCOMP]);
1813 dstRow[col * 3 + 2] = CHAN_TO_UBYTE(src[RCOMP]);
1814 src += 3;
1815 }
1816 #endif
1817 dstRow += dstRowStride;
1818 }
1819 }
1820 _mesa_free((void *) tempImage);
1821 }
1822 return GL_TRUE;
1823 }
1824
1825
1826 GLboolean
1827 _mesa_texstore_bgr888(TEXSTORE_PARAMS)
1828 {
1829 const GLboolean littleEndian = _mesa_little_endian();
1830
1831 ASSERT(dstFormat == &_mesa_texformat_bgr888);
1832 ASSERT(dstFormat->TexelBytes == 3);
1833
1834 if (!ctx->_ImageTransferState &&
1835 !srcPacking->SwapBytes &&
1836 baseInternalFormat == GL_RGB &&
1837 srcFormat == GL_RGB &&
1838 srcType == GL_UNSIGNED_BYTE &&
1839 littleEndian) {
1840 /* simple memcpy path */
1841 memcpy_texture(ctx, dims,
1842 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1843 dstRowStride,
1844 dstImageOffsets,
1845 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1846 srcAddr, srcPacking);
1847 }
1848 else if (!ctx->_ImageTransferState &&
1849 !srcPacking->SwapBytes &&
1850 srcFormat == GL_RGBA &&
1851 srcType == GL_UNSIGNED_BYTE) {
1852 /* extract BGR from RGBA */
1853 int img, row, col;
1854 for (img = 0; img < srcDepth; img++) {
1855 const GLint srcRowStride = _mesa_image_row_stride(srcPacking,
1856 srcWidth, srcFormat, srcType);
1857 GLubyte *srcRow = (GLubyte *) _mesa_image_address(dims, srcPacking,
1858 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, 0, 0);
1859 GLubyte *dstRow = (GLubyte *) dstAddr
1860 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1861 + dstYoffset * dstRowStride
1862 + dstXoffset * dstFormat->TexelBytes;
1863 for (row = 0; row < srcHeight; row++) {
1864 for (col = 0; col < srcWidth; col++) {
1865 dstRow[col * 3 + 0] = srcRow[col * 4 + RCOMP];
1866 dstRow[col * 3 + 1] = srcRow[col * 4 + GCOMP];
1867 dstRow[col * 3 + 2] = srcRow[col * 4 + BCOMP];
1868 }
1869 dstRow += dstRowStride;
1870 srcRow += srcRowStride;
1871 }
1872 }
1873 }
1874 else if (!ctx->_ImageTransferState &&
1875 srcType == GL_UNSIGNED_BYTE &&
1876 can_swizzle(baseInternalFormat) &&
1877 can_swizzle(srcFormat)) {
1878
1879 GLubyte dstmap[4];
1880
1881 /* dstmap - how to swizzle from RGBA to dst format:
1882 */
1883 dstmap[0] = 0;
1884 dstmap[1] = 1;
1885 dstmap[2] = 2;
1886 dstmap[3] = ONE; /* ? */
1887
1888 _mesa_swizzle_ubyte_image(ctx, dims,
1889 srcFormat,
1890 srcType,
1891 baseInternalFormat,
1892 dstmap, 3,
1893 dstAddr, dstXoffset, dstYoffset, dstZoffset,
1894 dstRowStride, dstImageOffsets,
1895 srcWidth, srcHeight, srcDepth, srcAddr,
1896 srcPacking);
1897 }
1898 else {
1899 /* general path */
1900 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1901 baseInternalFormat,
1902 dstFormat->BaseFormat,
1903 srcWidth, srcHeight, srcDepth,
1904 srcFormat, srcType, srcAddr,
1905 srcPacking);
1906 const GLchan *src = (const GLchan *) tempImage;
1907 GLint img, row, col;
1908 if (!tempImage)
1909 return GL_FALSE;
1910 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1911 for (img = 0; img < srcDepth; img++) {
1912 GLubyte *dstRow = (GLubyte *) dstAddr
1913 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1914 + dstYoffset * dstRowStride
1915 + dstXoffset * dstFormat->TexelBytes;
1916 for (row = 0; row < srcHeight; row++) {
1917 for (col = 0; col < srcWidth; col++) {
1918 dstRow[col * 3 + 0] = CHAN_TO_UBYTE(src[RCOMP]);
1919 dstRow[col * 3 + 1] = CHAN_TO_UBYTE(src[GCOMP]);
1920 dstRow[col * 3 + 2] = CHAN_TO_UBYTE(src[BCOMP]);
1921 src += 3;
1922 }
1923 dstRow += dstRowStride;
1924 }
1925 }
1926 _mesa_free((void *) tempImage);
1927 }
1928 return GL_TRUE;
1929 }
1930
1931
1932 GLboolean
1933 _mesa_texstore_argb4444(TEXSTORE_PARAMS)
1934 {
1935 ASSERT(dstFormat == &_mesa_texformat_argb4444 ||
1936 dstFormat == &_mesa_texformat_argb4444_rev);
1937 ASSERT(dstFormat->TexelBytes == 2);
1938
1939 if (!ctx->_ImageTransferState &&
1940 !srcPacking->SwapBytes &&
1941 dstFormat == &_mesa_texformat_argb4444 &&
1942 baseInternalFormat == GL_RGBA &&
1943 srcFormat == GL_BGRA &&
1944 srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
1945 /* simple memcpy path */
1946 memcpy_texture(ctx, dims,
1947 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
1948 dstRowStride,
1949 dstImageOffsets,
1950 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
1951 srcAddr, srcPacking);
1952 }
1953 else {
1954 /* general path */
1955 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
1956 baseInternalFormat,
1957 dstFormat->BaseFormat,
1958 srcWidth, srcHeight, srcDepth,
1959 srcFormat, srcType, srcAddr,
1960 srcPacking);
1961 const GLchan *src = tempImage;
1962 GLint img, row, col;
1963 if (!tempImage)
1964 return GL_FALSE;
1965 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
1966 for (img = 0; img < srcDepth; img++) {
1967 GLubyte *dstRow = (GLubyte *) dstAddr
1968 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
1969 + dstYoffset * dstRowStride
1970 + dstXoffset * dstFormat->TexelBytes;
1971 for (row = 0; row < srcHeight; row++) {
1972 GLushort *dstUS = (GLushort *) dstRow;
1973 if (dstFormat == &_mesa_texformat_argb4444) {
1974 for (col = 0; col < srcWidth; col++) {
1975 dstUS[col] = PACK_COLOR_4444( CHAN_TO_UBYTE(src[ACOMP]),
1976 CHAN_TO_UBYTE(src[RCOMP]),
1977 CHAN_TO_UBYTE(src[GCOMP]),
1978 CHAN_TO_UBYTE(src[BCOMP]) );
1979 src += 4;
1980 }
1981 }
1982 else {
1983 for (col = 0; col < srcWidth; col++) {
1984 dstUS[col] = PACK_COLOR_4444_REV( CHAN_TO_UBYTE(src[ACOMP]),
1985 CHAN_TO_UBYTE(src[RCOMP]),
1986 CHAN_TO_UBYTE(src[GCOMP]),
1987 CHAN_TO_UBYTE(src[BCOMP]) );
1988 src += 4;
1989 }
1990 }
1991 dstRow += dstRowStride;
1992 }
1993 }
1994 _mesa_free((void *) tempImage);
1995 }
1996 return GL_TRUE;
1997 }
1998
1999
2000
2001 GLboolean
2002 _mesa_texstore_argb1555(TEXSTORE_PARAMS)
2003 {
2004 ASSERT(dstFormat == &_mesa_texformat_argb1555 ||
2005 dstFormat == &_mesa_texformat_argb1555_rev);
2006 ASSERT(dstFormat->TexelBytes == 2);
2007
2008 if (!ctx->_ImageTransferState &&
2009 !srcPacking->SwapBytes &&
2010 dstFormat == &_mesa_texformat_argb1555 &&
2011 baseInternalFormat == GL_RGBA &&
2012 srcFormat == GL_BGRA &&
2013 srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
2014 /* simple memcpy path */
2015 memcpy_texture(ctx, dims,
2016 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2017 dstRowStride,
2018 dstImageOffsets,
2019 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2020 srcAddr, srcPacking);
2021 }
2022 else {
2023 /* general path */
2024 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
2025 baseInternalFormat,
2026 dstFormat->BaseFormat,
2027 srcWidth, srcHeight, srcDepth,
2028 srcFormat, srcType, srcAddr,
2029 srcPacking);
2030 const GLchan *src =tempImage;
2031 GLint img, row, col;
2032 if (!tempImage)
2033 return GL_FALSE;
2034 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2035 for (img = 0; img < srcDepth; img++) {
2036 GLubyte *dstRow = (GLubyte *) dstAddr
2037 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2038 + dstYoffset * dstRowStride
2039 + dstXoffset * dstFormat->TexelBytes;
2040 for (row = 0; row < srcHeight; row++) {
2041 GLushort *dstUS = (GLushort *) dstRow;
2042 if (dstFormat == &_mesa_texformat_argb1555) {
2043 for (col = 0; col < srcWidth; col++) {
2044 dstUS[col] = PACK_COLOR_1555( CHAN_TO_UBYTE(src[ACOMP]),
2045 CHAN_TO_UBYTE(src[RCOMP]),
2046 CHAN_TO_UBYTE(src[GCOMP]),
2047 CHAN_TO_UBYTE(src[BCOMP]) );
2048 src += 4;
2049 }
2050 }
2051 else {
2052 for (col = 0; col < srcWidth; col++) {
2053 dstUS[col] = PACK_COLOR_1555_REV( CHAN_TO_UBYTE(src[ACOMP]),
2054 CHAN_TO_UBYTE(src[RCOMP]),
2055 CHAN_TO_UBYTE(src[GCOMP]),
2056 CHAN_TO_UBYTE(src[BCOMP]) );
2057 src += 4;
2058 }
2059 }
2060 dstRow += dstRowStride;
2061 }
2062 }
2063 _mesa_free((void *) tempImage);
2064 }
2065 return GL_TRUE;
2066 }
2067
2068
2069 GLboolean
2070 _mesa_texstore_al88(TEXSTORE_PARAMS)
2071 {
2072 const GLboolean littleEndian = _mesa_little_endian();
2073
2074 ASSERT(dstFormat == &_mesa_texformat_al88 ||
2075 dstFormat == &_mesa_texformat_al88_rev);
2076 ASSERT(dstFormat->TexelBytes == 2);
2077
2078 if (!ctx->_ImageTransferState &&
2079 !srcPacking->SwapBytes &&
2080 dstFormat == &_mesa_texformat_al88 &&
2081 baseInternalFormat == GL_LUMINANCE_ALPHA &&
2082 srcFormat == GL_LUMINANCE_ALPHA &&
2083 srcType == GL_UNSIGNED_BYTE &&
2084 littleEndian) {
2085 /* simple memcpy path */
2086 memcpy_texture(ctx, dims,
2087 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2088 dstRowStride,
2089 dstImageOffsets,
2090 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2091 srcAddr, srcPacking);
2092 }
2093 else if (!ctx->_ImageTransferState &&
2094 littleEndian &&
2095 srcType == GL_UNSIGNED_BYTE &&
2096 can_swizzle(baseInternalFormat) &&
2097 can_swizzle(srcFormat)) {
2098
2099 GLubyte dstmap[4];
2100
2101 /* dstmap - how to swizzle from RGBA to dst format:
2102 */
2103 if ((littleEndian && dstFormat == &_mesa_texformat_al88) ||
2104 (!littleEndian && dstFormat == &_mesa_texformat_al88_rev)) {
2105 dstmap[0] = 0;
2106 dstmap[1] = 3;
2107 }
2108 else {
2109 dstmap[0] = 3;
2110 dstmap[1] = 0;
2111 }
2112 dstmap[2] = ZERO; /* ? */
2113 dstmap[3] = ONE; /* ? */
2114
2115 _mesa_swizzle_ubyte_image(ctx, dims,
2116 srcFormat,
2117 srcType,
2118 baseInternalFormat,
2119 dstmap, 2,
2120 dstAddr, dstXoffset, dstYoffset, dstZoffset,
2121 dstRowStride, dstImageOffsets,
2122 srcWidth, srcHeight, srcDepth, srcAddr,
2123 srcPacking);
2124 }
2125 else {
2126 /* general path */
2127 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
2128 baseInternalFormat,
2129 dstFormat->BaseFormat,
2130 srcWidth, srcHeight, srcDepth,
2131 srcFormat, srcType, srcAddr,
2132 srcPacking);
2133 const GLchan *src = tempImage;
2134 GLint img, row, col;
2135 if (!tempImage)
2136 return GL_FALSE;
2137 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2138 for (img = 0; img < srcDepth; img++) {
2139 GLubyte *dstRow = (GLubyte *) dstAddr
2140 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2141 + dstYoffset * dstRowStride
2142 + dstXoffset * dstFormat->TexelBytes;
2143 for (row = 0; row < srcHeight; row++) {
2144 GLushort *dstUS = (GLushort *) dstRow;
2145 if (dstFormat == &_mesa_texformat_al88) {
2146 for (col = 0; col < srcWidth; col++) {
2147 /* src[0] is luminance, src[1] is alpha */
2148 dstUS[col] = PACK_COLOR_88( CHAN_TO_UBYTE(src[1]),
2149 CHAN_TO_UBYTE(src[0]) );
2150 src += 2;
2151 }
2152 }
2153 else {
2154 for (col = 0; col < srcWidth; col++) {
2155 /* src[0] is luminance, src[1] is alpha */
2156 dstUS[col] = PACK_COLOR_88_REV( CHAN_TO_UBYTE(src[1]),
2157 CHAN_TO_UBYTE(src[0]) );
2158 src += 2;
2159 }
2160 }
2161 dstRow += dstRowStride;
2162 }
2163 }
2164 _mesa_free((void *) tempImage);
2165 }
2166 return GL_TRUE;
2167 }
2168
2169
2170 GLboolean
2171 _mesa_texstore_rgb332(TEXSTORE_PARAMS)
2172 {
2173 ASSERT(dstFormat == &_mesa_texformat_rgb332);
2174 ASSERT(dstFormat->TexelBytes == 1);
2175
2176 if (!ctx->_ImageTransferState &&
2177 !srcPacking->SwapBytes &&
2178 baseInternalFormat == GL_RGB &&
2179 srcFormat == GL_RGB && srcType == GL_UNSIGNED_BYTE_3_3_2) {
2180 /* simple memcpy path */
2181 memcpy_texture(ctx, dims,
2182 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2183 dstRowStride,
2184 dstImageOffsets,
2185 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2186 srcAddr, srcPacking);
2187 }
2188 else {
2189 /* general path */
2190 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
2191 baseInternalFormat,
2192 dstFormat->BaseFormat,
2193 srcWidth, srcHeight, srcDepth,
2194 srcFormat, srcType, srcAddr,
2195 srcPacking);
2196 const GLchan *src = tempImage;
2197 GLint img, row, col;
2198 if (!tempImage)
2199 return GL_FALSE;
2200 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2201 for (img = 0; img < srcDepth; img++) {
2202 GLubyte *dstRow = (GLubyte *) dstAddr
2203 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2204 + dstYoffset * dstRowStride
2205 + dstXoffset * dstFormat->TexelBytes;
2206 for (row = 0; row < srcHeight; row++) {
2207 for (col = 0; col < srcWidth; col++) {
2208 dstRow[col] = PACK_COLOR_332( CHAN_TO_UBYTE(src[RCOMP]),
2209 CHAN_TO_UBYTE(src[GCOMP]),
2210 CHAN_TO_UBYTE(src[BCOMP]) );
2211 src += 3;
2212 }
2213 dstRow += dstRowStride;
2214 }
2215 }
2216 _mesa_free((void *) tempImage);
2217 }
2218 return GL_TRUE;
2219 }
2220
2221
2222 /**
2223 * Texstore for _mesa_texformat_a8, _mesa_texformat_l8, _mesa_texformat_i8.
2224 */
2225 GLboolean
2226 _mesa_texstore_a8(TEXSTORE_PARAMS)
2227 {
2228 ASSERT(dstFormat == &_mesa_texformat_a8 ||
2229 dstFormat == &_mesa_texformat_l8 ||
2230 dstFormat == &_mesa_texformat_i8);
2231 ASSERT(dstFormat->TexelBytes == 1);
2232
2233 if (!ctx->_ImageTransferState &&
2234 !srcPacking->SwapBytes &&
2235 baseInternalFormat == srcFormat &&
2236 srcType == GL_UNSIGNED_BYTE) {
2237 /* simple memcpy path */
2238 memcpy_texture(ctx, dims,
2239 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2240 dstRowStride,
2241 dstImageOffsets,
2242 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2243 srcAddr, srcPacking);
2244 }
2245 else if (!ctx->_ImageTransferState &&
2246 srcType == GL_UNSIGNED_BYTE &&
2247 can_swizzle(baseInternalFormat) &&
2248 can_swizzle(srcFormat)) {
2249
2250 GLubyte dstmap[4];
2251
2252 /* dstmap - how to swizzle from RGBA to dst format:
2253 */
2254 if (dstFormat == &_mesa_texformat_a8) {
2255 dstmap[0] = 3;
2256 }
2257 else {
2258 dstmap[0] = 0;
2259 }
2260 dstmap[1] = ZERO; /* ? */
2261 dstmap[2] = ZERO; /* ? */
2262 dstmap[3] = ONE; /* ? */
2263
2264 _mesa_swizzle_ubyte_image(ctx, dims,
2265 srcFormat,
2266 srcType,
2267 baseInternalFormat,
2268 dstmap, 1,
2269 dstAddr, dstXoffset, dstYoffset, dstZoffset,
2270 dstRowStride, dstImageOffsets,
2271 srcWidth, srcHeight, srcDepth, srcAddr,
2272 srcPacking);
2273 }
2274 else {
2275 /* general path */
2276 const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
2277 baseInternalFormat,
2278 dstFormat->BaseFormat,
2279 srcWidth, srcHeight, srcDepth,
2280 srcFormat, srcType, srcAddr,
2281 srcPacking);
2282 const GLchan *src = tempImage;
2283 GLint img, row, col;
2284 if (!tempImage)
2285 return GL_FALSE;
2286 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2287 for (img = 0; img < srcDepth; img++) {
2288 GLubyte *dstRow = (GLubyte *) dstAddr
2289 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2290 + dstYoffset * dstRowStride
2291 + dstXoffset * dstFormat->TexelBytes;
2292 for (row = 0; row < srcHeight; row++) {
2293 for (col = 0; col < srcWidth; col++) {
2294 dstRow[col] = CHAN_TO_UBYTE(src[col]);
2295 }
2296 dstRow += dstRowStride;
2297 src += srcWidth;
2298 }
2299 }
2300 _mesa_free((void *) tempImage);
2301 }
2302 return GL_TRUE;
2303 }
2304
2305
2306
2307 GLboolean
2308 _mesa_texstore_ci8(TEXSTORE_PARAMS)
2309 {
2310 (void) dims; (void) baseInternalFormat;
2311 ASSERT(dstFormat == &_mesa_texformat_ci8);
2312 ASSERT(dstFormat->TexelBytes == 1);
2313 ASSERT(baseInternalFormat == GL_COLOR_INDEX);
2314
2315 if (!ctx->_ImageTransferState &&
2316 !srcPacking->SwapBytes &&
2317 srcFormat == GL_COLOR_INDEX &&
2318 srcType == GL_UNSIGNED_BYTE) {
2319 /* simple memcpy path */
2320 memcpy_texture(ctx, dims,
2321 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2322 dstRowStride,
2323 dstImageOffsets,
2324 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2325 srcAddr, srcPacking);
2326 }
2327 else {
2328 /* general path */
2329 GLint img, row;
2330 for (img = 0; img < srcDepth; img++) {
2331 GLubyte *dstRow = (GLubyte *) dstAddr
2332 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2333 + dstYoffset * dstRowStride
2334 + dstXoffset * dstFormat->TexelBytes;
2335 for (row = 0; row < srcHeight; row++) {
2336 const GLvoid *src = _mesa_image_address(dims, srcPacking,
2337 srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
2338 _mesa_unpack_index_span(ctx, srcWidth, GL_UNSIGNED_BYTE, dstRow,
2339 srcType, src, srcPacking,
2340 ctx->_ImageTransferState);
2341 dstRow += dstRowStride;
2342 }
2343 }
2344 }
2345 return GL_TRUE;
2346 }
2347
2348
2349 /**
2350 * Texstore for _mesa_texformat_ycbcr or _mesa_texformat_ycbcr_rev.
2351 */
2352 GLboolean
2353 _mesa_texstore_ycbcr(TEXSTORE_PARAMS)
2354 {
2355 const GLboolean littleEndian = _mesa_little_endian();
2356 (void) ctx; (void) dims; (void) baseInternalFormat;
2357
2358 ASSERT((dstFormat == &_mesa_texformat_ycbcr) ||
2359 (dstFormat == &_mesa_texformat_ycbcr_rev));
2360 ASSERT(dstFormat->TexelBytes == 2);
2361 ASSERT(ctx->Extensions.MESA_ycbcr_texture);
2362 ASSERT(srcFormat == GL_YCBCR_MESA);
2363 ASSERT((srcType == GL_UNSIGNED_SHORT_8_8_MESA) ||
2364 (srcType == GL_UNSIGNED_SHORT_8_8_REV_MESA));
2365 ASSERT(baseInternalFormat == GL_YCBCR_MESA);
2366
2367 /* always just memcpy since no pixel transfer ops apply */
2368 memcpy_texture(ctx, dims,
2369 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2370 dstRowStride,
2371 dstImageOffsets,
2372 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2373 srcAddr, srcPacking);
2374
2375 /* Check if we need byte swapping */
2376 /* XXX the logic here _might_ be wrong */
2377 if (srcPacking->SwapBytes ^
2378 (srcType == GL_UNSIGNED_SHORT_8_8_REV_MESA) ^
2379 (dstFormat == &_mesa_texformat_ycbcr_rev) ^
2380 !littleEndian) {
2381 GLint img, row;
2382 for (img = 0; img < srcDepth; img++) {
2383 GLubyte *dstRow = (GLubyte *) dstAddr
2384 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2385 + dstYoffset * dstRowStride
2386 + dstXoffset * dstFormat->TexelBytes;
2387 for (row = 0; row < srcHeight; row++) {
2388 _mesa_swap2((GLushort *) dstRow, srcWidth);
2389 dstRow += dstRowStride;
2390 }
2391 }
2392 }
2393 return GL_TRUE;
2394 }
2395
2396
2397
2398 /**
2399 * Store a combined depth/stencil texture image.
2400 */
2401 GLboolean
2402 _mesa_texstore_z24_s8(TEXSTORE_PARAMS)
2403 {
2404 const GLfloat depthScale = (GLfloat) 0xffffff;
2405
2406 ASSERT(dstFormat == &_mesa_texformat_z24_s8);
2407 ASSERT(srcFormat == GL_DEPTH_STENCIL_EXT);
2408 ASSERT(srcType == GL_UNSIGNED_INT_24_8_EXT);
2409
2410 if (ctx->Pixel.DepthScale == 1.0f &&
2411 ctx->Pixel.DepthBias == 0.0f &&
2412 !srcPacking->SwapBytes) {
2413 /* simple path */
2414 memcpy_texture(ctx, dims,
2415 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2416 dstRowStride,
2417 dstImageOffsets,
2418 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2419 srcAddr, srcPacking);
2420 }
2421 else {
2422 /* general path */
2423 const GLint srcRowStride
2424 = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType)
2425 / sizeof(GLuint);
2426 GLint img, row;
2427
2428 for (img = 0; img < srcDepth; img++) {
2429 GLuint *dstRow = (GLuint *) dstAddr
2430 + dstImageOffsets[dstZoffset + img]
2431 + dstYoffset * dstRowStride / sizeof(GLuint)
2432 + dstXoffset;
2433 const GLuint *src
2434 = (const GLuint *) _mesa_image_address(dims, srcPacking, srcAddr,
2435 srcWidth, srcHeight,
2436 srcFormat, srcType,
2437 img, 0, 0);
2438 for (row = 0; row < srcHeight; row++) {
2439 GLubyte stencil[MAX_WIDTH];
2440 GLint i;
2441 /* the 24 depth bits will be in the high position: */
2442 _mesa_unpack_depth_span(ctx, srcWidth,
2443 GL_UNSIGNED_INT_24_8_EXT, /* dst type */
2444 dstRow, /* dst addr */
2445 (GLuint) depthScale,
2446 srcType, src, srcPacking);
2447 /* get the 8-bit stencil values */
2448 _mesa_unpack_stencil_span(ctx, srcWidth,
2449 GL_UNSIGNED_BYTE, /* dst type */
2450 stencil, /* dst addr */
2451 srcType, src, srcPacking,
2452 ctx->_ImageTransferState);
2453 /* merge stencil values into depth values */
2454 for (i = 0; i < srcWidth; i++)
2455 dstRow[i] |= stencil[i];
2456
2457 src += srcRowStride;
2458 dstRow += dstRowStride / sizeof(GLuint);
2459 }
2460 }
2461 }
2462 return GL_TRUE;
2463 }
2464
2465
2466 /**
2467 * Store a combined depth/stencil texture image.
2468 */
2469 GLboolean
2470 _mesa_texstore_s8_z24(TEXSTORE_PARAMS)
2471 {
2472 const GLuint depthScale = 0xffffff;
2473 const GLint srcRowStride
2474 = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType)
2475 / sizeof(GLuint);
2476 GLint img, row;
2477
2478 ASSERT(dstFormat == &_mesa_texformat_s8_z24);
2479 ASSERT(srcFormat == GL_DEPTH_STENCIL_EXT || srcFormat == GL_DEPTH_COMPONENT);
2480 ASSERT(srcFormat != GL_DEPTH_STENCIL_EXT || srcType == GL_UNSIGNED_INT_24_8_EXT);
2481
2482 /* In case we only upload depth we need to preserve the stencil */
2483 if (srcFormat == GL_DEPTH_COMPONENT) {
2484 for (img = 0; img < srcDepth; img++) {
2485 GLuint *dstRow = (GLuint *) dstAddr
2486 + dstImageOffsets[dstZoffset + img]
2487 + dstYoffset * dstRowStride / sizeof(GLuint)
2488 + dstXoffset;
2489 const GLuint *src
2490 = (const GLuint *) _mesa_image_address(dims, srcPacking, srcAddr,
2491 srcWidth, srcHeight,
2492 srcFormat, srcType,
2493 img, 0, 0);
2494 for (row = 0; row < srcHeight; row++) {
2495 GLuint depth[MAX_WIDTH];
2496 GLint i;
2497 _mesa_unpack_depth_span(ctx, srcWidth,
2498 GL_UNSIGNED_INT, /* dst type */
2499 depth, /* dst addr */
2500 depthScale,
2501 srcType, src, srcPacking);
2502
2503 for (i = 0; i < srcWidth; i++)
2504 dstRow[i] = depth[i] | (dstRow[i] & 0xFF000000);
2505
2506 src += srcRowStride;
2507 dstRow += dstRowStride / sizeof(GLuint);
2508 }
2509 }
2510 }
2511 else {
2512 for (img = 0; img < srcDepth; img++) {
2513 GLuint *dstRow = (GLuint *) dstAddr
2514 + dstImageOffsets[dstZoffset + img]
2515 + dstYoffset * dstRowStride / sizeof(GLuint)
2516 + dstXoffset;
2517 const GLuint *src
2518 = (const GLuint *) _mesa_image_address(dims, srcPacking, srcAddr,
2519 srcWidth, srcHeight,
2520 srcFormat, srcType,
2521 img, 0, 0);
2522 for (row = 0; row < srcHeight; row++) {
2523 GLubyte stencil[MAX_WIDTH];
2524 GLint i;
2525 /* the 24 depth bits will be in the low position: */
2526 _mesa_unpack_depth_span(ctx, srcWidth,
2527 GL_UNSIGNED_INT, /* dst type */
2528 dstRow, /* dst addr */
2529 depthScale,
2530 srcType, src, srcPacking);
2531 /* get the 8-bit stencil values */
2532 _mesa_unpack_stencil_span(ctx, srcWidth,
2533 GL_UNSIGNED_BYTE, /* dst type */
2534 stencil, /* dst addr */
2535 srcType, src, srcPacking,
2536 ctx->_ImageTransferState);
2537 /* merge stencil values into depth values */
2538 for (i = 0; i < srcWidth; i++)
2539 dstRow[i] |= stencil[i] << 24;
2540
2541 src += srcRowStride;
2542 dstRow += dstRowStride / sizeof(GLuint);
2543 }
2544 }
2545 }
2546 return GL_TRUE;
2547 }
2548
2549 /**
2550 * Store an image in any of the formats:
2551 * _mesa_texformat_rgba_float32
2552 * _mesa_texformat_rgb_float32
2553 * _mesa_texformat_alpha_float32
2554 * _mesa_texformat_luminance_float32
2555 * _mesa_texformat_luminance_alpha_float32
2556 * _mesa_texformat_intensity_float32
2557 */
2558 GLboolean
2559 _mesa_texstore_rgba_float32(TEXSTORE_PARAMS)
2560 {
2561 const GLint components = _mesa_components_in_format(dstFormat->BaseFormat);
2562
2563 ASSERT(dstFormat == &_mesa_texformat_rgba_float32 ||
2564 dstFormat == &_mesa_texformat_rgb_float32 ||
2565 dstFormat == &_mesa_texformat_alpha_float32 ||
2566 dstFormat == &_mesa_texformat_luminance_float32 ||
2567 dstFormat == &_mesa_texformat_luminance_alpha_float32 ||
2568 dstFormat == &_mesa_texformat_intensity_float32);
2569 ASSERT(baseInternalFormat == GL_RGBA ||
2570 baseInternalFormat == GL_RGB ||
2571 baseInternalFormat == GL_ALPHA ||
2572 baseInternalFormat == GL_LUMINANCE ||
2573 baseInternalFormat == GL_LUMINANCE_ALPHA ||
2574 baseInternalFormat == GL_INTENSITY);
2575 ASSERT(dstFormat->TexelBytes == components * sizeof(GLfloat));
2576
2577 if (!ctx->_ImageTransferState &&
2578 !srcPacking->SwapBytes &&
2579 baseInternalFormat == srcFormat &&
2580 srcType == GL_FLOAT) {
2581 /* simple memcpy path */
2582 memcpy_texture(ctx, dims,
2583 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2584 dstRowStride,
2585 dstImageOffsets,
2586 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2587 srcAddr, srcPacking);
2588 }
2589 else {
2590 /* general path */
2591 const GLfloat *tempImage = make_temp_float_image(ctx, dims,
2592 baseInternalFormat,
2593 dstFormat->BaseFormat,
2594 srcWidth, srcHeight, srcDepth,
2595 srcFormat, srcType, srcAddr,
2596 srcPacking);
2597 const GLfloat *srcRow = tempImage;
2598 GLint bytesPerRow;
2599 GLint img, row;
2600 if (!tempImage)
2601 return GL_FALSE;
2602 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2603 bytesPerRow = srcWidth * components * sizeof(GLfloat);
2604 for (img = 0; img < srcDepth; img++) {
2605 GLubyte *dstRow = (GLubyte *) dstAddr
2606 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2607 + dstYoffset * dstRowStride
2608 + dstXoffset * dstFormat->TexelBytes;
2609 for (row = 0; row < srcHeight; row++) {
2610 _mesa_memcpy(dstRow, srcRow, bytesPerRow);
2611 dstRow += dstRowStride;
2612 srcRow += srcWidth * components;
2613 }
2614 }
2615
2616 _mesa_free((void *) tempImage);
2617 }
2618 return GL_TRUE;
2619 }
2620
2621
2622 /**
2623 * As above, but store 16-bit floats.
2624 */
2625 GLboolean
2626 _mesa_texstore_rgba_float16(TEXSTORE_PARAMS)
2627 {
2628 const GLint components = _mesa_components_in_format(dstFormat->BaseFormat);
2629
2630 ASSERT(dstFormat == &_mesa_texformat_rgba_float16 ||
2631 dstFormat == &_mesa_texformat_rgb_float16 ||
2632 dstFormat == &_mesa_texformat_alpha_float16 ||
2633 dstFormat == &_mesa_texformat_luminance_float16 ||
2634 dstFormat == &_mesa_texformat_luminance_alpha_float16 ||
2635 dstFormat == &_mesa_texformat_intensity_float16);
2636 ASSERT(baseInternalFormat == GL_RGBA ||
2637 baseInternalFormat == GL_RGB ||
2638 baseInternalFormat == GL_ALPHA ||
2639 baseInternalFormat == GL_LUMINANCE ||
2640 baseInternalFormat == GL_LUMINANCE_ALPHA ||
2641 baseInternalFormat == GL_INTENSITY);
2642 ASSERT(dstFormat->TexelBytes == components * sizeof(GLhalfARB));
2643
2644 if (!ctx->_ImageTransferState &&
2645 !srcPacking->SwapBytes &&
2646 baseInternalFormat == srcFormat &&
2647 srcType == GL_HALF_FLOAT_ARB) {
2648 /* simple memcpy path */
2649 memcpy_texture(ctx, dims,
2650 dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
2651 dstRowStride,
2652 dstImageOffsets,
2653 srcWidth, srcHeight, srcDepth, srcFormat, srcType,
2654 srcAddr, srcPacking);
2655 }
2656 else {
2657 /* general path */
2658 const GLfloat *tempImage = make_temp_float_image(ctx, dims,
2659 baseInternalFormat,
2660 dstFormat->BaseFormat,
2661 srcWidth, srcHeight, srcDepth,
2662 srcFormat, srcType, srcAddr,
2663 srcPacking);
2664 const GLfloat *src = tempImage;
2665 GLint img, row;
2666 if (!tempImage)
2667 return GL_FALSE;
2668 _mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
2669 for (img = 0; img < srcDepth; img++) {
2670 GLubyte *dstRow = (GLubyte *) dstAddr
2671 + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes
2672 + dstYoffset * dstRowStride
2673 + dstXoffset * dstFormat->TexelBytes;
2674 for (row = 0; row < srcHeight; row++) {
2675 GLhalfARB *dstTexel = (GLhalfARB *) dstRow;
2676 GLint i;
2677 for (i = 0; i < srcWidth * components; i++) {
2678 dstTexel[i] = _mesa_float_to_half(src[i]);
2679 }
2680 dstRow += dstRowStride;
2681 src += srcWidth * components;
2682 }
2683 }
2684
2685 _mesa_free((void *) tempImage);
2686 }
2687 return GL_TRUE;
2688 }
2689
2690
2691 #if FEATURE_EXT_texture_sRGB
2692 GLboolean
2693 _mesa_texstore_srgb8(TEXSTORE_PARAMS)
2694 {
2695 const GLboolean littleEndian = _mesa_little_endian();
2696 const struct gl_texture_format *newDstFormat;
2697 StoreTexImageFunc store;
2698 GLboolean k;
2699
2700 ASSERT(dstFormat == &_mesa_texformat_srgb8);
2701
2702 /* reuse normal rgb texstore code */
2703 if (littleEndian) {
2704 newDstFormat = &_mesa_texformat_bgr888;
2705 store = _mesa_texstore_bgr888;
2706 }
2707 else {
2708 newDstFormat = &_mesa_texformat_rgb888;
2709 store = _mesa_texstore_rgb888;
2710 }
2711
2712 k = store(ctx, dims, baseInternalFormat,
2713 newDstFormat, dstAddr,
2714 dstXoffset, dstYoffset, dstZoffset,
2715 dstRowStride, dstImageOffsets,
2716 srcWidth, srcHeight, srcDepth,
2717 srcFormat, srcType,
2718 srcAddr, srcPacking);
2719 return k;
2720 }
2721
2722
2723 GLboolean
2724 _mesa_texstore_srgba8(TEXSTORE_PARAMS)
2725 {
2726 const GLboolean littleEndian = _mesa_little_endian();
2727 const struct gl_texture_format *newDstFormat;
2728 GLboolean k;
2729
2730 ASSERT(dstFormat == &_mesa_texformat_srgba8);
2731
2732 /* reuse normal rgba texstore code */
2733 if (littleEndian)
2734 newDstFormat = &_mesa_texformat_rgba8888_rev;
2735 else
2736 newDstFormat = &_mesa_texformat_rgba8888;
2737
2738 k = _mesa_texstore_rgba8888(ctx, dims, baseInternalFormat,
2739 newDstFormat, dstAddr,
2740 dstXoffset, dstYoffset, dstZoffset,
2741 dstRowStride, dstImageOffsets,
2742 srcWidth, srcHeight, srcDepth,
2743 srcFormat, srcType,
2744 srcAddr, srcPacking);
2745 return k;
2746 }
2747
2748
2749 GLboolean
2750 _mesa_texstore_sl8(TEXSTORE_PARAMS)
2751 {
2752 const struct gl_texture_format *newDstFormat;
2753 GLboolean k;
2754
2755 ASSERT(dstFormat == &_mesa_texformat_sl8);
2756
2757 newDstFormat = &_mesa_texformat_l8;
2758
2759 /* _mesa_textore_a8 handles luminance8 too */
2760 k = _mesa_texstore_a8(ctx, dims, baseInternalFormat,
2761 newDstFormat, dstAddr,
2762 dstXoffset, dstYoffset, dstZoffset,
2763 dstRowStride, dstImageOffsets,
2764 srcWidth, srcHeight, srcDepth,
2765 srcFormat, srcType,
2766 srcAddr, srcPacking);
2767 return k;
2768 }
2769
2770
2771 GLboolean
2772 _mesa_texstore_sla8(TEXSTORE_PARAMS)
2773 {
2774 const GLboolean littleEndian = _mesa_little_endian();
2775 const struct gl_texture_format *newDstFormat;
2776 GLboolean k;
2777
2778 ASSERT(dstFormat == &_mesa_texformat_sla8);
2779
2780 /* reuse normal luminance/alpha texstore code */
2781 if (littleEndian)
2782 newDstFormat = &_mesa_texformat_al88;
2783 else
2784 newDstFormat = &_mesa_texformat_al88_rev;
2785
2786 k = _mesa_texstore_al88(ctx, dims, baseInternalFormat,
2787 newDstFormat, dstAddr,
2788 dstXoffset, dstYoffset, dstZoffset,
2789 dstRowStride, dstImageOffsets,
2790 srcWidth, srcHeight, srcDepth,
2791 srcFormat, srcType,
2792 srcAddr, srcPacking);
2793 return k;
2794 }
2795
2796 #endif /* FEATURE_EXT_texture_sRGB */
2797
2798
2799 /**
2800 * Check if an unpack PBO is active prior to fetching a texture image.
2801 * If so, do bounds checking and map the buffer into main memory.
2802 * Any errors detected will be recorded.
2803 * The caller _must_ call _mesa_unmap_teximage_pbo() too!
2804 */
2805 const GLvoid *
2806 _mesa_validate_pbo_teximage(GLcontext *ctx, GLuint dimensions,
2807 GLsizei width, GLsizei height, GLsizei depth,
2808 GLenum format, GLenum type, const GLvoid *pixels,
2809 const struct gl_pixelstore_attrib *unpack,
2810 const char *funcName)
2811 {
2812 GLubyte *buf;
2813
2814 if (unpack->BufferObj->Name == 0) {
2815 /* no PBO */
2816 return pixels;
2817 }
2818 if (!_mesa_validate_pbo_access(dimensions, unpack, width, height, depth,
2819 format, type, pixels)) {
2820 _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access");
2821 return NULL;
2822 }
2823
2824 buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
2825 GL_READ_ONLY_ARB, unpack->BufferObj);
2826 if (!buf) {
2827 _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped");
2828 return NULL;
2829 }
2830
2831 return ADD_POINTERS(buf, pixels);
2832 }
2833
2834
2835 /**
2836 * Check if an unpack PBO is active prior to fetching a compressed texture
2837 * image.
2838 * If so, do bounds checking and map the buffer into main memory.
2839 * Any errors detected will be recorded.
2840 * The caller _must_ call _mesa_unmap_teximage_pbo() too!
2841 */
2842 const GLvoid *
2843 _mesa_validate_pbo_compressed_teximage(GLcontext *ctx,
2844 GLsizei imageSize, const GLvoid *pixels,
2845 const struct gl_pixelstore_attrib *packing,
2846 const char *funcName)
2847 {
2848 GLubyte *buf;
2849
2850 if (packing->BufferObj->Name == 0) {
2851 /* not using a PBO - return pointer unchanged */
2852 return pixels;
2853 }
2854 if ((const GLubyte *) pixels + imageSize >
2855 ((const GLubyte *) 0) + packing->BufferObj->Size) {
2856 /* out of bounds read! */
2857 _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(invalid PBO access");
2858 return NULL;
2859 }
2860
2861 buf = (GLubyte*) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
2862 GL_READ_ONLY_ARB, packing->BufferObj);
2863 if (!buf) {
2864 _mesa_error(ctx, GL_INVALID_OPERATION, funcName, "(PBO is mapped");
2865 return NULL;
2866 }
2867
2868 return ADD_POINTERS(buf, pixels);
2869 }
2870
2871
2872 /**
2873 * This function must be called after either of the validate_pbo_*_teximage()
2874 * functions. It unmaps the PBO buffer if it was mapped earlier.
2875 */
2876 void
2877 _mesa_unmap_teximage_pbo(GLcontext *ctx,
2878 const struct gl_pixelstore_attrib *unpack)
2879 {
2880 if (unpack->BufferObj->Name) {
2881 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
2882 unpack->BufferObj);
2883 }
2884 }
2885
2886
2887
2888 /**
2889 * Adaptor for fetching a GLchan texel from a float-valued texture.
2890 */
2891 static void
2892 fetch_texel_float_to_chan(const struct gl_texture_image *texImage,
2893 GLint i, GLint j, GLint k, GLchan *texelOut)
2894 {
2895 GLfloat temp[4];
2896 ASSERT(texImage->FetchTexelf);
2897 texImage->FetchTexelf(texImage, i, j, k, temp);
2898 if (texImage->TexFormat->BaseFormat == GL_DEPTH_COMPONENT ||
2899 texImage->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT) {
2900 /* just one channel */
2901 UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);
2902 }
2903 else {
2904 /* four channels */
2905 UNCLAMPED_FLOAT_TO_CHAN(texelOut[0], temp[0]);
2906 UNCLAMPED_FLOAT_TO_CHAN(texelOut[1], temp[1]);
2907 UNCLAMPED_FLOAT_TO_CHAN(texelOut[2], temp[2]);
2908 UNCLAMPED_FLOAT_TO_CHAN(texelOut[3], temp[3]);
2909 }
2910 }
2911
2912
2913 /**
2914 * Adaptor for fetching a float texel from a GLchan-valued texture.
2915 */
2916 static void
2917 fetch_texel_chan_to_float(const struct gl_texture_image *texImage,
2918 GLint i, GLint j, GLint k, GLfloat *texelOut)
2919 {
2920 GLchan temp[4];
2921 ASSERT(texImage->FetchTexelc);
2922 texImage->FetchTexelc(texImage, i, j, k, temp);
2923 if (texImage->TexFormat->BaseFormat == GL_DEPTH_COMPONENT ||
2924 texImage->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT) {
2925 /* just one channel */
2926 texelOut[0] = CHAN_TO_FLOAT(temp[0]);
2927 }
2928 else {
2929 /* four channels */
2930 texelOut[0] = CHAN_TO_FLOAT(temp[0]);
2931 texelOut[1] = CHAN_TO_FLOAT(temp[1]);
2932 texelOut[2] = CHAN_TO_FLOAT(temp[2]);
2933 texelOut[3] = CHAN_TO_FLOAT(temp[3]);
2934 }
2935 }
2936
2937
2938 /**
2939 * Initialize the texture image's FetchTexelc and FetchTexelf methods.
2940 */
2941 void
2942 _mesa_set_fetch_functions(struct gl_texture_image *texImage, GLuint dims)
2943 {
2944 ASSERT(dims == 1 || dims == 2 || dims == 3);
2945 ASSERT(texImage->TexFormat);
2946
2947 switch (dims) {
2948 case 1:
2949 texImage->FetchTexelc = texImage->TexFormat->FetchTexel1D;
2950 texImage->FetchTexelf = texImage->TexFormat->FetchTexel1Df;
2951 break;
2952 case 2:
2953 texImage->FetchTexelc = texImage->TexFormat->FetchTexel2D;
2954 texImage->FetchTexelf = texImage->TexFormat->FetchTexel2Df;
2955 break;
2956 case 3:
2957 texImage->FetchTexelc = texImage->TexFormat->FetchTexel3D;
2958 texImage->FetchTexelf = texImage->TexFormat->FetchTexel3Df;
2959 break;
2960 default:
2961 ;
2962 }
2963
2964 /* now check if we need to use a float/chan adaptor */
2965 if (!texImage->FetchTexelc) {
2966 texImage->FetchTexelc = fetch_texel_float_to_chan;
2967 }
2968 else if (!texImage->FetchTexelf) {
2969 texImage->FetchTexelf = fetch_texel_chan_to_float;
2970 }
2971
2972
2973 ASSERT(texImage->FetchTexelc);
2974 ASSERT(texImage->FetchTexelf);
2975 }
2976
2977
2978 /**
2979 * Choose the actual storage format for a new texture image.
2980 * Mainly, this is a wrapper for the driver's ChooseTextureFormat() function.
2981 * Also set some other texImage fields related to texture compression, etc.
2982 * \param ctx rendering context
2983 * \param texImage the gl_texture_image
2984 * \param dims texture dimensions (1, 2 or 3)
2985 * \param format the user-specified format parameter
2986 * \param type the user-specified type parameter
2987 * \param internalFormat the user-specified internal format hint
2988 */
2989 static void
2990 choose_texture_format(GLcontext *ctx, struct gl_texture_image *texImage,
2991 GLuint dims,
2992 GLenum format, GLenum type, GLint internalFormat)
2993 {
2994 ASSERT(dims == 1 || dims == 2 || dims == 3);
2995 ASSERT(ctx->Driver.ChooseTextureFormat);
2996
2997 texImage->TexFormat
2998 = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type);
2999
3000 ASSERT(texImage->TexFormat);
3001
3002 _mesa_set_fetch_functions(texImage, dims);
3003
3004 if (texImage->TexFormat->TexelBytes == 0) {
3005 /* must be a compressed format */
3006 texImage->IsCompressed = GL_TRUE;
3007 texImage->CompressedSize =
3008 ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
3009 texImage->Height, texImage->Depth,
3010 texImage->TexFormat->MesaFormat);
3011 }
3012 else {
3013 /* non-compressed format */
3014 texImage->IsCompressed = GL_FALSE;
3015 texImage->CompressedSize = 0;
3016 }
3017 }
3018
3019
3020
3021 /*
3022 * This is the software fallback for Driver.TexImage1D()
3023 * and Driver.CopyTexImage1D().
3024 * \sa _mesa_store_teximage2d()
3025 */
3026 void
3027 _mesa_store_teximage1d(GLcontext *ctx, GLenum target, GLint level,
3028 GLint internalFormat,
3029 GLint width, GLint border,
3030 GLenum format, GLenum type, const GLvoid *pixels,
3031 const struct gl_pixelstore_attrib *packing,
3032 struct gl_texture_object *texObj,
3033 struct gl_texture_image *texImage)
3034 {
3035 GLint postConvWidth = width;
3036 GLint sizeInBytes;
3037 (void) border;
3038
3039 if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
3040 _mesa_adjust_image_for_convolution(ctx, 1, &postConvWidth, NULL);
3041 }
3042
3043 choose_texture_format(ctx, texImage, 1, format, type, internalFormat);
3044
3045 /* allocate memory */
3046 if (texImage->IsCompressed)
3047 sizeInBytes = texImage->CompressedSize;
3048 else
3049 sizeInBytes = postConvWidth * texImage->TexFormat->TexelBytes;
3050 texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
3051 if (!texImage->Data) {
3052 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D");
3053 return;
3054 }
3055
3056 pixels = _mesa_validate_pbo_teximage(ctx, 1, width, 1, 1, format, type,
3057 pixels, packing, "glTexImage1D");
3058 if (!pixels) {
3059 /* Note: we check for a NULL image pointer here, _after_ we allocated
3060 * memory for the texture. That's what the GL spec calls for.
3061 */
3062 return;
3063 }
3064 else {
3065 const GLint dstRowStride = 0;
3066 GLboolean success;
3067 ASSERT(texImage->TexFormat->StoreImage);
3068 success = texImage->TexFormat->StoreImage(ctx, 1, texImage->_BaseFormat,
3069 texImage->TexFormat,
3070 texImage->Data,
3071 0, 0, 0, /* dstX/Y/Zoffset */
3072 dstRowStride,
3073 texImage->ImageOffsets,
3074 width, 1, 1,
3075 format, type, pixels, packing);
3076 if (!success) {
3077 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage1D");
3078 }
3079 }
3080
3081 /* GL_SGIS_generate_mipmap */
3082 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3083 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3084 }
3085
3086 _mesa_unmap_teximage_pbo(ctx, packing);
3087 }
3088
3089
3090 /**
3091 * This is the software fallback for Driver.TexImage2D()
3092 * and Driver.CopyTexImage2D().
3093 *
3094 * This function is oriented toward storing images in main memory, rather
3095 * than VRAM. Device driver's can easily plug in their own replacement.
3096 *
3097 * Note: width and height may be pre-convolved dimensions, but
3098 * texImage->Width and texImage->Height will be post-convolved dimensions.
3099 */
3100 void
3101 _mesa_store_teximage2d(GLcontext *ctx, GLenum target, GLint level,
3102 GLint internalFormat,
3103 GLint width, GLint height, GLint border,
3104 GLenum format, GLenum type, const void *pixels,
3105 const struct gl_pixelstore_attrib *packing,
3106 struct gl_texture_object *texObj,
3107 struct gl_texture_image *texImage)
3108 {
3109 GLint postConvWidth = width, postConvHeight = height;
3110 GLint texelBytes, sizeInBytes;
3111 (void) border;
3112
3113 if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
3114 _mesa_adjust_image_for_convolution(ctx, 2, &postConvWidth,
3115 &postConvHeight);
3116 }
3117
3118 choose_texture_format(ctx, texImage, 2, format, type, internalFormat);
3119
3120 texelBytes = texImage->TexFormat->TexelBytes;
3121
3122 /* allocate memory */
3123 if (texImage->IsCompressed)
3124 sizeInBytes = texImage->CompressedSize;
3125 else
3126 sizeInBytes = postConvWidth * postConvHeight * texelBytes;
3127 texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
3128 if (!texImage->Data) {
3129 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
3130 return;
3131 }
3132
3133 pixels = _mesa_validate_pbo_teximage(ctx, 2, width, height, 1, format, type,
3134 pixels, packing, "glTexImage2D");
3135 if (!pixels) {
3136 /* Note: we check for a NULL image pointer here, _after_ we allocated
3137 * memory for the texture. That's what the GL spec calls for.
3138 */
3139 return;
3140 }
3141 else {
3142 GLint dstRowStride;
3143 GLboolean success;
3144 if (texImage->IsCompressed) {
3145 dstRowStride
3146 = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
3147 }
3148 else {
3149 dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes;
3150 }
3151 ASSERT(texImage->TexFormat->StoreImage);
3152 success = texImage->TexFormat->StoreImage(ctx, 2, texImage->_BaseFormat,
3153 texImage->TexFormat,
3154 texImage->Data,
3155 0, 0, 0, /* dstX/Y/Zoffset */
3156 dstRowStride,
3157 texImage->ImageOffsets,
3158 width, height, 1,
3159 format, type, pixels, packing);
3160 if (!success) {
3161 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage2D");
3162 }
3163 }
3164
3165 /* GL_SGIS_generate_mipmap */
3166 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3167 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3168 }
3169
3170 _mesa_unmap_teximage_pbo(ctx, packing);
3171 }
3172
3173
3174
3175 /**
3176 * This is the software fallback for Driver.TexImage3D()
3177 * and Driver.CopyTexImage3D().
3178 * \sa _mesa_store_teximage2d()
3179 */
3180 void
3181 _mesa_store_teximage3d(GLcontext *ctx, GLenum target, GLint level,
3182 GLint internalFormat,
3183 GLint width, GLint height, GLint depth, GLint border,
3184 GLenum format, GLenum type, const void *pixels,
3185 const struct gl_pixelstore_attrib *packing,
3186 struct gl_texture_object *texObj,
3187 struct gl_texture_image *texImage)
3188 {
3189 GLint texelBytes, sizeInBytes;
3190 (void) border;
3191
3192 choose_texture_format(ctx, texImage, 3, format, type, internalFormat);
3193
3194 texelBytes = texImage->TexFormat->TexelBytes;
3195
3196 /* allocate memory */
3197 if (texImage->IsCompressed)
3198 sizeInBytes = texImage->CompressedSize;
3199 else
3200 sizeInBytes = width * height * depth * texelBytes;
3201 texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
3202 if (!texImage->Data) {
3203 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D");
3204 return;
3205 }
3206
3207 pixels = _mesa_validate_pbo_teximage(ctx, 3, width, height, depth, format,
3208 type, pixels, packing, "glTexImage3D");
3209 if (!pixels) {
3210 /* Note: we check for a NULL image pointer here, _after_ we allocated
3211 * memory for the texture. That's what the GL spec calls for.
3212 */
3213 return;
3214 }
3215 else {
3216 GLint dstRowStride;
3217 GLboolean success;
3218 if (texImage->IsCompressed) {
3219 dstRowStride
3220 = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
3221 }
3222 else {
3223 dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes;
3224 }
3225 ASSERT(texImage->TexFormat->StoreImage);
3226 success = texImage->TexFormat->StoreImage(ctx, 3, texImage->_BaseFormat,
3227 texImage->TexFormat,
3228 texImage->Data,
3229 0, 0, 0, /* dstX/Y/Zoffset */
3230 dstRowStride,
3231 texImage->ImageOffsets,
3232 width, height, depth,
3233 format, type, pixels, packing);
3234 if (!success) {
3235 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage3D");
3236 }
3237 }
3238
3239 /* GL_SGIS_generate_mipmap */
3240 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3241 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3242 }
3243
3244 _mesa_unmap_teximage_pbo(ctx, packing);
3245 }
3246
3247
3248
3249
3250 /*
3251 * This is the software fallback for Driver.TexSubImage1D()
3252 * and Driver.CopyTexSubImage1D().
3253 */
3254 void
3255 _mesa_store_texsubimage1d(GLcontext *ctx, GLenum target, GLint level,
3256 GLint xoffset, GLint width,
3257 GLenum format, GLenum type, const void *pixels,
3258 const struct gl_pixelstore_attrib *packing,
3259 struct gl_texture_object *texObj,
3260 struct gl_texture_image *texImage)
3261 {
3262 /* get pointer to src pixels (may be in a pbo which we'll map here) */
3263 pixels = _mesa_validate_pbo_teximage(ctx, 1, width, 1, 1, format, type,
3264 pixels, packing, "glTexSubImage1D");
3265 if (!pixels)
3266 return;
3267
3268 {
3269 const GLint dstRowStride = 0;
3270 GLboolean success;
3271 ASSERT(texImage->TexFormat->StoreImage);
3272 success = texImage->TexFormat->StoreImage(ctx, 1, texImage->_BaseFormat,
3273 texImage->TexFormat,
3274 texImage->Data,
3275 xoffset, 0, 0, /* offsets */
3276 dstRowStride,
3277 texImage->ImageOffsets,
3278 width, 1, 1,
3279 format, type, pixels, packing);
3280 if (!success) {
3281 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage1D");
3282 }
3283 }
3284
3285 /* GL_SGIS_generate_mipmap */
3286 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3287 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3288 }
3289
3290 _mesa_unmap_teximage_pbo(ctx, packing);
3291 }
3292
3293
3294
3295 /**
3296 * This is the software fallback for Driver.TexSubImage2D()
3297 * and Driver.CopyTexSubImage2D().
3298 */
3299 void
3300 _mesa_store_texsubimage2d(GLcontext *ctx, GLenum target, GLint level,
3301 GLint xoffset, GLint yoffset,
3302 GLint width, GLint height,
3303 GLenum format, GLenum type, const void *pixels,
3304 const struct gl_pixelstore_attrib *packing,
3305 struct gl_texture_object *texObj,
3306 struct gl_texture_image *texImage)
3307 {
3308 /* get pointer to src pixels (may be in a pbo which we'll map here) */
3309 pixels = _mesa_validate_pbo_teximage(ctx, 2, width, height, 1, format, type,
3310 pixels, packing, "glTexSubImage2D");
3311 if (!pixels)
3312 return;
3313
3314 {
3315 GLint dstRowStride = 0;
3316 GLboolean success;
3317 if (texImage->IsCompressed) {
3318 dstRowStride = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat,
3319 texImage->Width);
3320 }
3321 else {
3322 dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes;
3323 }
3324 ASSERT(texImage->TexFormat->StoreImage);
3325 success = texImage->TexFormat->StoreImage(ctx, 2, texImage->_BaseFormat,
3326 texImage->TexFormat,
3327 texImage->Data,
3328 xoffset, yoffset, 0,
3329 dstRowStride,
3330 texImage->ImageOffsets,
3331 width, height, 1,
3332 format, type, pixels, packing);
3333 if (!success) {
3334 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage2D");
3335 }
3336 }
3337
3338 /* GL_SGIS_generate_mipmap */
3339 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3340 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3341 }
3342
3343 _mesa_unmap_teximage_pbo(ctx, packing);
3344 }
3345
3346
3347 /*
3348 * This is the software fallback for Driver.TexSubImage3D().
3349 * and Driver.CopyTexSubImage3D().
3350 */
3351 void
3352 _mesa_store_texsubimage3d(GLcontext *ctx, GLenum target, GLint level,
3353 GLint xoffset, GLint yoffset, GLint zoffset,
3354 GLint width, GLint height, GLint depth,
3355 GLenum format, GLenum type, const void *pixels,
3356 const struct gl_pixelstore_attrib *packing,
3357 struct gl_texture_object *texObj,
3358 struct gl_texture_image *texImage)
3359 {
3360 /* get pointer to src pixels (may be in a pbo which we'll map here) */
3361 pixels = _mesa_validate_pbo_teximage(ctx, 3, width, height, depth, format,
3362 type, pixels, packing,
3363 "glTexSubImage3D");
3364 if (!pixels)
3365 return;
3366
3367 {
3368 GLint dstRowStride;
3369 GLboolean success;
3370 if (texImage->IsCompressed) {
3371 dstRowStride = _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat,
3372 texImage->Width);
3373 }
3374 else {
3375 dstRowStride = texImage->RowStride * texImage->TexFormat->TexelBytes;
3376 }
3377 ASSERT(texImage->TexFormat->StoreImage);
3378 success = texImage->TexFormat->StoreImage(ctx, 3, texImage->_BaseFormat,
3379 texImage->TexFormat,
3380 texImage->Data,
3381 xoffset, yoffset, zoffset,
3382 dstRowStride,
3383 texImage->ImageOffsets,
3384 width, height, depth,
3385 format, type, pixels, packing);
3386 if (!success) {
3387 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage3D");
3388 }
3389 }
3390
3391 /* GL_SGIS_generate_mipmap */
3392 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3393 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3394 }
3395
3396 _mesa_unmap_teximage_pbo(ctx, packing);
3397 }
3398
3399
3400 /*
3401 * Fallback for Driver.CompressedTexImage1D()
3402 */
3403 void
3404 _mesa_store_compressed_teximage1d(GLcontext *ctx, GLenum target, GLint level,
3405 GLint internalFormat,
3406 GLint width, GLint border,
3407 GLsizei imageSize, const GLvoid *data,
3408 struct gl_texture_object *texObj,
3409 struct gl_texture_image *texImage)
3410 {
3411 /* this space intentionally left blank */
3412 (void) ctx;
3413 (void) target; (void) level;
3414 (void) internalFormat;
3415 (void) width; (void) border;
3416 (void) imageSize; (void) data;
3417 (void) texObj;
3418 (void) texImage;
3419 }
3420
3421
3422
3423 /**
3424 * Fallback for Driver.CompressedTexImage2D()
3425 */
3426 void
3427 _mesa_store_compressed_teximage2d(GLcontext *ctx, GLenum target, GLint level,
3428 GLint internalFormat,
3429 GLint width, GLint height, GLint border,
3430 GLsizei imageSize, const GLvoid *data,
3431 struct gl_texture_object *texObj,
3432 struct gl_texture_image *texImage)
3433 {
3434 (void) width; (void) height; (void) border;
3435
3436 /* This is pretty simple, basically just do a memcpy without worrying
3437 * about the usual image unpacking or image transfer operations.
3438 */
3439 ASSERT(texObj);
3440 ASSERT(texImage);
3441 ASSERT(texImage->Width > 0);
3442 ASSERT(texImage->Height > 0);
3443 ASSERT(texImage->Depth == 1);
3444 ASSERT(texImage->Data == NULL); /* was freed in glCompressedTexImage2DARB */
3445
3446 choose_texture_format(ctx, texImage, 2, 0, 0, internalFormat);
3447
3448 /* allocate storage */
3449 texImage->Data = _mesa_alloc_texmemory(imageSize);
3450 if (!texImage->Data) {
3451 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2DARB");
3452 return;
3453 }
3454
3455 data = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, data,
3456 &ctx->Unpack,
3457 "glCompressedTexImage2D");
3458 if (!data)
3459 return;
3460
3461 /* copy the data */
3462 ASSERT(texImage->CompressedSize == (GLuint) imageSize);
3463 MEMCPY(texImage->Data, data, imageSize);
3464
3465 /* GL_SGIS_generate_mipmap */
3466 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3467 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3468 }
3469
3470 _mesa_unmap_teximage_pbo(ctx, &ctx->Unpack);
3471 }
3472
3473
3474
3475 /*
3476 * Fallback for Driver.CompressedTexImage3D()
3477 */
3478 void
3479 _mesa_store_compressed_teximage3d(GLcontext *ctx, GLenum target, GLint level,
3480 GLint internalFormat,
3481 GLint width, GLint height, GLint depth,
3482 GLint border,
3483 GLsizei imageSize, const GLvoid *data,
3484 struct gl_texture_object *texObj,
3485 struct gl_texture_image *texImage)
3486 {
3487 /* this space intentionally left blank */
3488 (void) ctx;
3489 (void) target; (void) level;
3490 (void) internalFormat;
3491 (void) width; (void) height; (void) depth;
3492 (void) border;
3493 (void) imageSize; (void) data;
3494 (void) texObj;
3495 (void) texImage;
3496 }
3497
3498
3499
3500 /**
3501 * Fallback for Driver.CompressedTexSubImage1D()
3502 */
3503 void
3504 _mesa_store_compressed_texsubimage1d(GLcontext *ctx, GLenum target,
3505 GLint level,
3506 GLint xoffset, GLsizei width,
3507 GLenum format,
3508 GLsizei imageSize, const GLvoid *data,
3509 struct gl_texture_object *texObj,
3510 struct gl_texture_image *texImage)
3511 {
3512 /* there are no compressed 1D texture formats yet */
3513 (void) ctx;
3514 (void) target; (void) level;
3515 (void) xoffset; (void) width;
3516 (void) format;
3517 (void) imageSize; (void) data;
3518 (void) texObj;
3519 (void) texImage;
3520 }
3521
3522
3523 /**
3524 * Fallback for Driver.CompressedTexSubImage2D()
3525 */
3526 void
3527 _mesa_store_compressed_texsubimage2d(GLcontext *ctx, GLenum target,
3528 GLint level,
3529 GLint xoffset, GLint yoffset,
3530 GLsizei width, GLsizei height,
3531 GLenum format,
3532 GLsizei imageSize, const GLvoid *data,
3533 struct gl_texture_object *texObj,
3534 struct gl_texture_image *texImage)
3535 {
3536 GLint bytesPerRow, destRowStride, srcRowStride;
3537 GLint i, rows;
3538 GLubyte *dest;
3539 const GLubyte *src;
3540 const GLuint mesaFormat = texImage->TexFormat->MesaFormat;
3541
3542 (void) format;
3543
3544 /* these should have been caught sooner */
3545 ASSERT((width & 3) == 0 || width == 2 || width == 1);
3546 ASSERT((height & 3) == 0 || height == 2 || height == 1);
3547 ASSERT((xoffset & 3) == 0);
3548 ASSERT((yoffset & 3) == 0);
3549
3550 /* get pointer to src pixels (may be in a pbo which we'll map here) */
3551 data = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, data,
3552 &ctx->Unpack,
3553 "glCompressedTexSubImage2D");
3554 if (!data)
3555 return;
3556
3557 srcRowStride = _mesa_compressed_row_stride(mesaFormat, width);
3558 src = (const GLubyte *) data;
3559
3560 destRowStride = _mesa_compressed_row_stride(mesaFormat, texImage->Width);
3561 dest = _mesa_compressed_image_address(xoffset, yoffset, 0,
3562 texImage->TexFormat->MesaFormat,
3563 texImage->Width,
3564 (GLubyte *) texImage->Data);
3565
3566 bytesPerRow = srcRowStride;
3567 rows = height / 4;
3568
3569 for (i = 0; i < rows; i++) {
3570 MEMCPY(dest, src, bytesPerRow);
3571 dest += destRowStride;
3572 src += srcRowStride;
3573 }
3574
3575 /* GL_SGIS_generate_mipmap */
3576 if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
3577 ctx->Driver.GenerateMipmap(ctx, target, texObj);
3578 }
3579
3580 _mesa_unmap_teximage_pbo(ctx, &ctx->Unpack);
3581 }
3582
3583
3584 /**
3585 * Fallback for Driver.CompressedTexSubImage3D()
3586 */
3587 void
3588 _mesa_store_compressed_texsubimage3d(GLcontext *ctx, GLenum target,
3589 GLint level,
3590 GLint xoffset, GLint yoffset, GLint zoffset,
3591 GLsizei width, GLsizei height, GLsizei depth,
3592 GLenum format,
3593 GLsizei imageSize, const GLvoid *data,
3594 struct gl_texture_object *texObj,
3595 struct gl_texture_image *texImage)
3596 {
3597 /* there are no compressed 3D texture formats yet */
3598 (void) ctx;
3599 (void) target; (void) level;
3600 (void) xoffset; (void) yoffset; (void) zoffset;
3601 (void) width; (void) height; (void) depth;
3602 (void) format;
3603 (void) imageSize; (void) data;
3604 (void) texObj;
3605 (void) texImage;
3606 }
3607
3608
3609
3610
3611 #if FEATURE_EXT_texture_sRGB
3612
3613 /**
3614 * Test if given texture image is an sRGB format.
3615 */
3616 static GLboolean
3617 is_srgb_teximage(const struct gl_texture_image *texImage)
3618 {
3619 switch (texImage->TexFormat->MesaFormat) {
3620 case MESA_FORMAT_SRGB8:
3621 case MESA_FORMAT_SRGBA8:
3622 case MESA_FORMAT_SL8:
3623 case MESA_FORMAT_SLA8:
3624 return GL_TRUE;
3625 default:
3626 return GL_FALSE;
3627 }
3628 }
3629
3630 #endif /* FEATURE_EXT_texture_sRGB */
3631
3632
3633 /**
3634 * This is the software fallback for Driver.GetTexImage().
3635 * All error checking will have been done before this routine is called.
3636 */
3637 void
3638 _mesa_get_teximage(GLcontext *ctx, GLenum target, GLint level,
3639 GLenum format, GLenum type, GLvoid *pixels,
3640 struct gl_texture_object *texObj,
3641 struct gl_texture_image *texImage)
3642 {
3643 const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
3644
3645 if (ctx->Pack.BufferObj->Name) {
3646 /* Packing texture image into a PBO.
3647 * Map the (potentially) VRAM-based buffer into our process space so
3648 * we can write into it with the code below.
3649 * A hardware driver might use a sophisticated blit to move the
3650 * texture data to the PBO if the PBO is in VRAM along with the texture.
3651 */
3652 GLubyte *buf = (GLubyte *)
3653 ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
3654 GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);
3655 if (!buf) {
3656 /* buffer is already mapped - that's an error */
3657 _mesa_error(ctx, GL_INVALID_OPERATION,"glGetTexImage(PBO is mapped)");
3658 return;
3659 }
3660 /* <pixels> was an offset into the PBO.
3661 * Now make it a real, client-side pointer inside the mapped region.
3662 */
3663 pixels = ADD_POINTERS(buf, pixels);
3664 }
3665 else if (!pixels) {
3666 /* not an error */
3667 return;
3668 }
3669
3670 {
3671 const GLint width = texImage->Width;
3672 const GLint height = texImage->Height;
3673 const GLint depth = texImage->Depth;
3674 GLint img, row;
3675 for (img = 0; img < depth; img++) {
3676 for (row = 0; row < height; row++) {
3677 /* compute destination address in client memory */
3678 GLvoid *dest = _mesa_image_address( dimensions, &ctx->Pack, pixels,
3679 width, height, format, type,
3680 img, row, 0);
3681 assert(dest);
3682
3683 if (format == GL_COLOR_INDEX) {
3684 GLuint indexRow[MAX_WIDTH];
3685 GLint col;
3686 /* Can't use FetchTexel here because that returns RGBA */
3687 if (texImage->TexFormat->IndexBits == 8) {
3688 const GLubyte *src = (const GLubyte *) texImage->Data;
3689 src += width * (img * texImage->Height + row);
3690 for (col = 0; col < width; col++) {
3691 indexRow[col] = src[col];
3692 }
3693 }
3694 else if (texImage->TexFormat->IndexBits == 16) {
3695 const GLushort *src = (const GLushort *) texImage->Data;
3696 src += width * (img * texImage->Height + row);
3697 for (col = 0; col < width; col++) {
3698 indexRow[col] = src[col];
3699 }
3700 }
3701 else {
3702 _mesa_problem(ctx,
3703 "Color index problem in _mesa_GetTexImage");
3704 }
3705 _mesa_pack_index_span(ctx, width, type, dest,
3706 indexRow, &ctx->Pack,
3707 0 /* no image transfer */);
3708 }
3709 else if (format == GL_DEPTH_COMPONENT) {
3710 GLfloat depthRow[MAX_WIDTH];
3711 GLint col;
3712 for (col = 0; col < width; col++) {
3713 (*texImage->FetchTexelf)(texImage, col, row, img,
3714 depthRow + col);
3715 }
3716 _mesa_pack_depth_span(ctx, width, dest, type,
3717 depthRow, &ctx->Pack);
3718 }
3719 else if (format == GL_DEPTH_STENCIL_EXT) {
3720 /* XXX Note: we're bypassing texImage->FetchTexel()! */
3721 const GLuint *src = (const GLuint *) texImage->Data;
3722 src += width * row + width * height * img;
3723 _mesa_memcpy(dest, src, width * sizeof(GLuint));
3724 if (ctx->Pack.SwapBytes) {
3725 _mesa_swap4((GLuint *) dest, width);
3726 }
3727 }
3728 else if (format == GL_YCBCR_MESA) {
3729 /* No pixel transfer */
3730 const GLint rowstride = texImage->RowStride;
3731 MEMCPY(dest,
3732 (const GLushort *) texImage->Data + row * rowstride,
3733 width * sizeof(GLushort));
3734 /* check for byte swapping */
3735 if ((texImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR
3736 && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) ||
3737 (texImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV
3738 && type == GL_UNSIGNED_SHORT_8_8_MESA)) {
3739 if (!ctx->Pack.SwapBytes)
3740 _mesa_swap2((GLushort *) dest, width);
3741 }
3742 else if (ctx->Pack.SwapBytes) {
3743 _mesa_swap2((GLushort *) dest, width);
3744 }
3745 }
3746 #if FEATURE_EXT_texture_sRGB
3747 else if (is_srgb_teximage(texImage)) {
3748 /* no pixel transfer and no non-linear to linear conversion */
3749 const GLint comps = texImage->TexFormat->TexelBytes;
3750 const GLint rowstride = comps * texImage->RowStride;
3751 MEMCPY(dest,
3752 (const GLubyte *) texImage->Data + row * rowstride,
3753 comps * width * sizeof(GLubyte));
3754 }
3755 #endif /* FEATURE_EXT_texture_sRGB */
3756 else {
3757 /* general case: convert row to RGBA format */
3758 GLfloat rgba[MAX_WIDTH][4];
3759 GLint col;
3760 for (col = 0; col < width; col++) {
3761 (*texImage->FetchTexelf)(texImage, col, row, img, rgba[col]);
3762 if (texImage->TexFormat->BaseFormat == GL_ALPHA) {
3763 rgba[col][RCOMP] = 0.0;
3764 rgba[col][GCOMP] = 0.0;
3765 rgba[col][BCOMP] = 0.0;
3766 }
3767 else if (texImage->TexFormat->BaseFormat == GL_LUMINANCE) {
3768 rgba[col][GCOMP] = 0.0;
3769 rgba[col][BCOMP] = 0.0;
3770 rgba[col][ACOMP] = 1.0;
3771 }
3772 else if (texImage->TexFormat->BaseFormat == GL_LUMINANCE_ALPHA) {
3773 rgba[col][GCOMP] = 0.0;
3774 rgba[col][BCOMP] = 0.0;
3775 }
3776 else if (texImage->TexFormat->BaseFormat == GL_INTENSITY) {
3777 rgba[col][GCOMP] = 0.0;
3778 rgba[col][BCOMP] = 0.0;
3779 rgba[col][ACOMP] = 1.0;
3780 }
3781 }
3782 _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
3783 format, type, dest,
3784 &ctx->Pack, 0x0 /*image xfer ops*/);
3785 } /* format */
3786 } /* row */
3787 } /* img */
3788 }
3789
3790 if (ctx->Pack.BufferObj->Name) {
3791 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
3792 ctx->Pack.BufferObj);
3793 }
3794 }
3795
3796
3797
3798 /**
3799 * This is the software fallback for Driver.GetCompressedTexImage().
3800 * All error checking will have been done before this routine is called.
3801 */
3802 void
3803 _mesa_get_compressed_teximage(GLcontext *ctx, GLenum target, GLint level,
3804 GLvoid *img,
3805 struct gl_texture_object *texObj,
3806 struct gl_texture_image *texImage)
3807 {
3808 GLuint size;
3809
3810 if (ctx->Pack.BufferObj->Name) {
3811 /* pack texture image into a PBO */
3812 GLubyte *buf;
3813 if ((const GLubyte *) img + texImage->CompressedSize >
3814 (const GLubyte *) ctx->Pack.BufferObj->Size) {
3815 _mesa_error(ctx, GL_INVALID_OPERATION,
3816 "glGetCompressedTexImage(invalid PBO access)");
3817 return;
3818 }
3819 buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
3820 GL_WRITE_ONLY_ARB,
3821 ctx->Pack.BufferObj);
3822 if (!buf) {
3823 /* buffer is already mapped - that's an error */
3824 _mesa_error(ctx, GL_INVALID_OPERATION,
3825 "glGetCompressedTexImage(PBO is mapped)");
3826 return;
3827 }
3828 img = ADD_POINTERS(buf, img);
3829 }
3830 else if (!img) {
3831 /* not an error */
3832 return;
3833 }
3834
3835 /* don't use texImage->CompressedSize since that may be padded out */
3836 size = _mesa_compressed_texture_size(ctx, texImage->Width, texImage->Height,
3837 texImage->Depth,
3838 texImage->TexFormat->MesaFormat);
3839
3840 /* just memcpy, no pixelstore or pixel transfer */
3841 _mesa_memcpy(img, texImage->Data, size);
3842
3843 if (ctx->Pack.BufferObj->Name) {
3844 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
3845 ctx->Pack.BufferObj);
3846 }
3847 }