1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
|
/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
* Copyright (c) 2008-2009 VMware, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* Authors:
* Brian Paul
*/
/**
* The GL texture image functions in teximage.c basically just do
* error checking and data structure allocation. They in turn call
* device driver functions which actually copy/convert/store the user's
* texture image data.
*
* However, most device drivers will be able to use the fallback functions
* in this file. That is, most drivers will have the following bit of
* code:
* ctx->Driver.TexImage = _mesa_store_teximage;
* ctx->Driver.TexSubImage = _mesa_store_texsubimage;
* etc...
*
* Texture image processing is actually kind of complicated. We have to do:
* Format/type conversions
* pixel unpacking
* pixel transfer (scale, bais, lookup, etc)
*
* These functions can handle most everything, including processing full
* images and sub-images.
*/
#include "glheader.h"
#include "bufferobj.h"
#include "format_pack.h"
#include "format_utils.h"
#include "image.h"
#include "macros.h"
#include "mipmap.h"
#include "mtypes.h"
#include "pack.h"
#include "pbo.h"
#include "imports.h"
#include "texcompress.h"
#include "texcompress_fxt1.h"
#include "texcompress_rgtc.h"
#include "texcompress_s3tc.h"
#include "texcompress_etc.h"
#include "texcompress_bptc.h"
#include "teximage.h"
#include "texstore.h"
#include "enums.h"
#include "glformats.h"
#include "pixeltransfer.h"
#include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
#include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
enum {
ZERO = 4,
ONE = 5
};
/**
* Texture image storage function.
*/
typedef GLboolean (*StoreTexImageFunc)(TEXSTORE_PARAMS);
static const GLubyte map_identity[6] = { 0, 1, 2, 3, ZERO, ONE };
static const GLubyte map_3210[6] = { 3, 2, 1, 0, ZERO, ONE };
static const GLubyte map_1032[6] = { 1, 0, 3, 2, ZERO, ONE };
/**
* Teximage storage routine for when a simple memcpy will do.
* No pixel transfer operations or special texel encodings allowed.
* 1D, 2D and 3D images supported.
*/
static void
memcpy_texture(struct gl_context *ctx,
GLuint dimensions,
mesa_format dstFormat,
GLint dstRowStride,
GLubyte **dstSlices,
GLint srcWidth, GLint srcHeight, GLint srcDepth,
GLenum srcFormat, GLenum srcType,
const GLvoid *srcAddr,
const struct gl_pixelstore_attrib *srcPacking)
{
const GLint srcRowStride = _mesa_image_row_stride(srcPacking, srcWidth,
srcFormat, srcType);
const GLint srcImageStride = _mesa_image_image_stride(srcPacking,
srcWidth, srcHeight, srcFormat, srcType);
const GLubyte *srcImage = (const GLubyte *) _mesa_image_address(dimensions,
srcPacking, srcAddr, srcWidth, srcHeight, srcFormat, srcType, 0, 0, 0);
const GLuint texelBytes = _mesa_get_format_bytes(dstFormat);
const GLint bytesPerRow = srcWidth * texelBytes;
if (dstRowStride == srcRowStride &&
dstRowStride == bytesPerRow) {
/* memcpy image by image */
GLint img;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstImage = dstSlices[img];
memcpy(dstImage, srcImage, bytesPerRow * srcHeight);
srcImage += srcImageStride;
}
}
else {
/* memcpy row by row */
GLint img, row;
for (img = 0; img < srcDepth; img++) {
const GLubyte *srcRow = srcImage;
GLubyte *dstRow = dstSlices[img];
for (row = 0; row < srcHeight; row++) {
memcpy(dstRow, srcRow, bytesPerRow);
dstRow += dstRowStride;
srcRow += srcRowStride;
}
srcImage += srcImageStride;
}
}
}
/**
* Store a 32-bit integer or float depth component texture image.
*/
static GLboolean
_mesa_texstore_z32(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffffffff;
GLenum dstType;
(void) dims;
assert(dstFormat == MESA_FORMAT_Z_UNORM32 ||
dstFormat == MESA_FORMAT_Z_FLOAT32);
assert(_mesa_get_format_bytes(dstFormat) == sizeof(GLuint));
if (dstFormat == MESA_FORMAT_Z_UNORM32)
dstType = GL_UNSIGNED_INT;
else
dstType = GL_FLOAT;
{
/* general path */
GLint img, row;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = dstSlices[img];
for (row = 0; row < srcHeight; row++) {
const GLvoid *src = _mesa_image_address(dims, srcPacking,
srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
_mesa_unpack_depth_span(ctx, srcWidth,
dstType, dstRow,
depthScale, srcType, src, srcPacking);
dstRow += dstRowStride;
}
}
}
return GL_TRUE;
}
/**
* Store a 24-bit integer depth component texture image.
*/
static GLboolean
_mesa_texstore_x8_z24(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffffff;
(void) dims;
assert(dstFormat == MESA_FORMAT_Z24_UNORM_X8_UINT);
{
/* general path */
GLint img, row;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = dstSlices[img];
for (row = 0; row < srcHeight; row++) {
const GLvoid *src = _mesa_image_address(dims, srcPacking,
srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
_mesa_unpack_depth_span(ctx, srcWidth,
GL_UNSIGNED_INT, (GLuint *) dstRow,
depthScale, srcType, src, srcPacking);
dstRow += dstRowStride;
}
}
}
return GL_TRUE;
}
/**
* Store a 24-bit integer depth component texture image.
*/
static GLboolean
_mesa_texstore_z24_x8(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffffff;
(void) dims;
assert(dstFormat == MESA_FORMAT_X8_UINT_Z24_UNORM);
{
/* general path */
GLint img, row;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = dstSlices[img];
for (row = 0; row < srcHeight; row++) {
const GLvoid *src = _mesa_image_address(dims, srcPacking,
srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
GLuint *dst = (GLuint *) dstRow;
GLint i;
_mesa_unpack_depth_span(ctx, srcWidth,
GL_UNSIGNED_INT, dst,
depthScale, srcType, src, srcPacking);
for (i = 0; i < srcWidth; i++)
dst[i] <<= 8;
dstRow += dstRowStride;
}
}
}
return GL_TRUE;
}
/**
* Store a 16-bit integer depth component texture image.
*/
static GLboolean
_mesa_texstore_z16(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffff;
(void) dims;
assert(dstFormat == MESA_FORMAT_Z_UNORM16);
assert(_mesa_get_format_bytes(dstFormat) == sizeof(GLushort));
{
/* general path */
GLint img, row;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = dstSlices[img];
for (row = 0; row < srcHeight; row++) {
const GLvoid *src = _mesa_image_address(dims, srcPacking,
srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
GLushort *dst16 = (GLushort *) dstRow;
_mesa_unpack_depth_span(ctx, srcWidth,
GL_UNSIGNED_SHORT, dst16, depthScale,
srcType, src, srcPacking);
dstRow += dstRowStride;
}
}
}
return GL_TRUE;
}
/**
* Texstore for _mesa_texformat_ycbcr or _mesa_texformat_ycbcr_REV.
*/
static GLboolean
_mesa_texstore_ycbcr(TEXSTORE_PARAMS)
{
const GLboolean littleEndian = _mesa_little_endian();
(void) ctx; (void) dims; (void) baseInternalFormat;
assert((dstFormat == MESA_FORMAT_YCBCR) ||
(dstFormat == MESA_FORMAT_YCBCR_REV));
assert(_mesa_get_format_bytes(dstFormat) == 2);
assert(ctx->Extensions.MESA_ycbcr_texture);
assert(srcFormat == GL_YCBCR_MESA);
assert((srcType == GL_UNSIGNED_SHORT_8_8_MESA) ||
(srcType == GL_UNSIGNED_SHORT_8_8_REV_MESA));
assert(baseInternalFormat == GL_YCBCR_MESA);
/* always just memcpy since no pixel transfer ops apply */
memcpy_texture(ctx, dims,
dstFormat,
dstRowStride, dstSlices,
srcWidth, srcHeight, srcDepth, srcFormat, srcType,
srcAddr, srcPacking);
/* Check if we need byte swapping */
/* XXX the logic here _might_ be wrong */
if (srcPacking->SwapBytes ^
(srcType == GL_UNSIGNED_SHORT_8_8_REV_MESA) ^
(dstFormat == MESA_FORMAT_YCBCR_REV) ^
!littleEndian) {
GLint img, row;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = dstSlices[img];
for (row = 0; row < srcHeight; row++) {
_mesa_swap2((GLushort *) dstRow, srcWidth);
dstRow += dstRowStride;
}
}
}
return GL_TRUE;
}
/**
* Store a combined depth/stencil texture image.
*/
static GLboolean
_mesa_texstore_z24_s8(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffffff;
const GLint srcRowStride
= _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType);
GLint img, row;
GLuint *depth = malloc(srcWidth * sizeof(GLuint));
GLubyte *stencil = malloc(srcWidth * sizeof(GLubyte));
assert(dstFormat == MESA_FORMAT_S8_UINT_Z24_UNORM);
assert(srcFormat == GL_DEPTH_STENCIL_EXT ||
srcFormat == GL_DEPTH_COMPONENT ||
srcFormat == GL_STENCIL_INDEX);
assert(srcFormat != GL_DEPTH_STENCIL_EXT ||
srcType == GL_UNSIGNED_INT_24_8_EXT ||
srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
if (!depth || !stencil) {
free(depth);
free(stencil);
return GL_FALSE;
}
/* In case we only upload depth we need to preserve the stencil */
for (img = 0; img < srcDepth; img++) {
GLuint *dstRow = (GLuint *) dstSlices[img];
const GLubyte *src
= (const GLubyte *) _mesa_image_address(dims, srcPacking, srcAddr,
srcWidth, srcHeight,
srcFormat, srcType,
img, 0, 0);
for (row = 0; row < srcHeight; row++) {
GLint i;
GLboolean keepdepth = GL_FALSE, keepstencil = GL_FALSE;
if (srcFormat == GL_DEPTH_COMPONENT) { /* preserve stencil */
keepstencil = GL_TRUE;
}
else if (srcFormat == GL_STENCIL_INDEX) { /* preserve depth */
keepdepth = GL_TRUE;
}
if (keepdepth == GL_FALSE)
/* the 24 depth bits will be in the low position: */
_mesa_unpack_depth_span(ctx, srcWidth,
GL_UNSIGNED_INT, /* dst type */
keepstencil ? depth : dstRow, /* dst addr */
depthScale,
srcType, src, srcPacking);
if (keepstencil == GL_FALSE)
/* get the 8-bit stencil values */
_mesa_unpack_stencil_span(ctx, srcWidth,
GL_UNSIGNED_BYTE, /* dst type */
stencil, /* dst addr */
srcType, src, srcPacking,
ctx->_ImageTransferState);
for (i = 0; i < srcWidth; i++) {
if (keepstencil)
dstRow[i] = depth[i] << 8 | (dstRow[i] & 0x000000FF);
else
dstRow[i] = (dstRow[i] & 0xFFFFFF00) | (stencil[i] & 0xFF);
}
src += srcRowStride;
dstRow += dstRowStride / sizeof(GLuint);
}
}
free(depth);
free(stencil);
return GL_TRUE;
}
/**
* Store a combined depth/stencil texture image.
*/
static GLboolean
_mesa_texstore_s8_z24(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffffff;
const GLint srcRowStride
= _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType);
GLint img, row;
GLuint *depth;
GLubyte *stencil;
assert(dstFormat == MESA_FORMAT_Z24_UNORM_S8_UINT);
assert(srcFormat == GL_DEPTH_STENCIL_EXT ||
srcFormat == GL_DEPTH_COMPONENT ||
srcFormat == GL_STENCIL_INDEX);
assert(srcFormat != GL_DEPTH_STENCIL_EXT ||
srcType == GL_UNSIGNED_INT_24_8_EXT ||
srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
depth = malloc(srcWidth * sizeof(GLuint));
stencil = malloc(srcWidth * sizeof(GLubyte));
if (!depth || !stencil) {
free(depth);
free(stencil);
return GL_FALSE;
}
for (img = 0; img < srcDepth; img++) {
GLuint *dstRow = (GLuint *) dstSlices[img];
const GLubyte *src
= (const GLubyte *) _mesa_image_address(dims, srcPacking, srcAddr,
srcWidth, srcHeight,
srcFormat, srcType,
img, 0, 0);
for (row = 0; row < srcHeight; row++) {
GLint i;
GLboolean keepdepth = GL_FALSE, keepstencil = GL_FALSE;
if (srcFormat == GL_DEPTH_COMPONENT) { /* preserve stencil */
keepstencil = GL_TRUE;
}
else if (srcFormat == GL_STENCIL_INDEX) { /* preserve depth */
keepdepth = GL_TRUE;
}
if (keepdepth == GL_FALSE)
/* the 24 depth bits will be in the low position: */
_mesa_unpack_depth_span(ctx, srcWidth,
GL_UNSIGNED_INT, /* dst type */
keepstencil ? depth : dstRow, /* dst addr */
depthScale,
srcType, src, srcPacking);
if (keepstencil == GL_FALSE)
/* get the 8-bit stencil values */
_mesa_unpack_stencil_span(ctx, srcWidth,
GL_UNSIGNED_BYTE, /* dst type */
stencil, /* dst addr */
srcType, src, srcPacking,
ctx->_ImageTransferState);
/* merge stencil values into depth values */
for (i = 0; i < srcWidth; i++) {
if (keepstencil)
dstRow[i] = depth[i] | (dstRow[i] & 0xFF000000);
else
dstRow[i] = (dstRow[i] & 0xFFFFFF) | (stencil[i] << 24);
}
src += srcRowStride;
dstRow += dstRowStride / sizeof(GLuint);
}
}
free(depth);
free(stencil);
return GL_TRUE;
}
/**
* Store simple 8-bit/value stencil texture data.
*/
static GLboolean
_mesa_texstore_s8(TEXSTORE_PARAMS)
{
assert(dstFormat == MESA_FORMAT_S_UINT8);
assert(srcFormat == GL_STENCIL_INDEX);
{
const GLint srcRowStride
= _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType);
GLint img, row;
GLubyte *stencil = malloc(srcWidth * sizeof(GLubyte));
if (!stencil)
return GL_FALSE;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = dstSlices[img];
const GLubyte *src
= (const GLubyte *) _mesa_image_address(dims, srcPacking, srcAddr,
srcWidth, srcHeight,
srcFormat, srcType,
img, 0, 0);
for (row = 0; row < srcHeight; row++) {
GLint i;
/* get the 8-bit stencil values */
_mesa_unpack_stencil_span(ctx, srcWidth,
GL_UNSIGNED_BYTE, /* dst type */
stencil, /* dst addr */
srcType, src, srcPacking,
ctx->_ImageTransferState);
/* merge stencil values into depth values */
for (i = 0; i < srcWidth; i++)
dstRow[i] = stencil[i];
src += srcRowStride;
dstRow += dstRowStride / sizeof(GLubyte);
}
}
free(stencil);
}
return GL_TRUE;
}
static GLboolean
_mesa_texstore_z32f_x24s8(TEXSTORE_PARAMS)
{
GLint img, row;
const GLint srcRowStride
= _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType)
/ sizeof(uint64_t);
assert(dstFormat == MESA_FORMAT_Z32_FLOAT_S8X24_UINT);
assert(srcFormat == GL_DEPTH_STENCIL ||
srcFormat == GL_DEPTH_COMPONENT ||
srcFormat == GL_STENCIL_INDEX);
assert(srcFormat != GL_DEPTH_STENCIL ||
srcType == GL_UNSIGNED_INT_24_8 ||
srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
/* In case we only upload depth we need to preserve the stencil */
for (img = 0; img < srcDepth; img++) {
uint64_t *dstRow = (uint64_t *) dstSlices[img];
const uint64_t *src
= (const uint64_t *) _mesa_image_address(dims, srcPacking, srcAddr,
srcWidth, srcHeight,
srcFormat, srcType,
img, 0, 0);
for (row = 0; row < srcHeight; row++) {
/* The unpack functions with:
* dstType = GL_FLOAT_32_UNSIGNED_INT_24_8_REV
* only write their own dword, so the other dword (stencil
* or depth) is preserved. */
if (srcFormat != GL_STENCIL_INDEX)
_mesa_unpack_depth_span(ctx, srcWidth,
GL_FLOAT_32_UNSIGNED_INT_24_8_REV, /* dst type */
dstRow, /* dst addr */
~0U, srcType, src, srcPacking);
if (srcFormat != GL_DEPTH_COMPONENT)
_mesa_unpack_stencil_span(ctx, srcWidth,
GL_FLOAT_32_UNSIGNED_INT_24_8_REV, /* dst type */
dstRow, /* dst addr */
srcType, src, srcPacking,
ctx->_ImageTransferState);
src += srcRowStride;
dstRow += dstRowStride / sizeof(uint64_t);
}
}
return GL_TRUE;
}
static GLboolean
texstore_depth_stencil(TEXSTORE_PARAMS)
{
static StoreTexImageFunc table[MESA_FORMAT_COUNT];
static GLboolean initialized = GL_FALSE;
if (!initialized) {
memset(table, 0, sizeof table);
table[MESA_FORMAT_S8_UINT_Z24_UNORM] = _mesa_texstore_z24_s8;
table[MESA_FORMAT_Z24_UNORM_S8_UINT] = _mesa_texstore_s8_z24;
table[MESA_FORMAT_Z_UNORM16] = _mesa_texstore_z16;
table[MESA_FORMAT_Z24_UNORM_X8_UINT] = _mesa_texstore_x8_z24;
table[MESA_FORMAT_X8_UINT_Z24_UNORM] = _mesa_texstore_z24_x8;
table[MESA_FORMAT_Z_UNORM32] = _mesa_texstore_z32;
table[MESA_FORMAT_S_UINT8] = _mesa_texstore_s8;
table[MESA_FORMAT_Z_FLOAT32] = _mesa_texstore_z32;
table[MESA_FORMAT_Z32_FLOAT_S8X24_UINT] = _mesa_texstore_z32f_x24s8;
initialized = GL_TRUE;
}
assert(table[dstFormat]);
return table[dstFormat](ctx, dims, baseInternalFormat,
dstFormat, dstRowStride, dstSlices,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr, srcPacking);
}
static GLboolean
texstore_compressed(TEXSTORE_PARAMS)
{
static StoreTexImageFunc table[MESA_FORMAT_COUNT];
static GLboolean initialized = GL_FALSE;
if (!initialized) {
memset(table, 0, sizeof table);
table[MESA_FORMAT_SRGB_DXT1] = _mesa_texstore_rgb_dxt1;
table[MESA_FORMAT_SRGBA_DXT1] = _mesa_texstore_rgba_dxt1;
table[MESA_FORMAT_SRGBA_DXT3] = _mesa_texstore_rgba_dxt3;
table[MESA_FORMAT_SRGBA_DXT5] = _mesa_texstore_rgba_dxt5;
table[MESA_FORMAT_RGB_FXT1] = _mesa_texstore_rgb_fxt1;
table[MESA_FORMAT_RGBA_FXT1] = _mesa_texstore_rgba_fxt1;
table[MESA_FORMAT_RGB_DXT1] = _mesa_texstore_rgb_dxt1;
table[MESA_FORMAT_RGBA_DXT1] = _mesa_texstore_rgba_dxt1;
table[MESA_FORMAT_RGBA_DXT3] = _mesa_texstore_rgba_dxt3;
table[MESA_FORMAT_RGBA_DXT5] = _mesa_texstore_rgba_dxt5;
table[MESA_FORMAT_R_RGTC1_UNORM] = _mesa_texstore_red_rgtc1;
table[MESA_FORMAT_R_RGTC1_SNORM] = _mesa_texstore_signed_red_rgtc1;
table[MESA_FORMAT_RG_RGTC2_UNORM] = _mesa_texstore_rg_rgtc2;
table[MESA_FORMAT_RG_RGTC2_SNORM] = _mesa_texstore_signed_rg_rgtc2;
table[MESA_FORMAT_L_LATC1_UNORM] = _mesa_texstore_red_rgtc1;
table[MESA_FORMAT_L_LATC1_SNORM] = _mesa_texstore_signed_red_rgtc1;
table[MESA_FORMAT_LA_LATC2_UNORM] = _mesa_texstore_rg_rgtc2;
table[MESA_FORMAT_LA_LATC2_SNORM] = _mesa_texstore_signed_rg_rgtc2;
table[MESA_FORMAT_ETC1_RGB8] = _mesa_texstore_etc1_rgb8;
table[MESA_FORMAT_ETC2_RGB8] = _mesa_texstore_etc2_rgb8;
table[MESA_FORMAT_ETC2_SRGB8] = _mesa_texstore_etc2_srgb8;
table[MESA_FORMAT_ETC2_RGBA8_EAC] = _mesa_texstore_etc2_rgba8_eac;
table[MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC] = _mesa_texstore_etc2_srgb8_alpha8_eac;
table[MESA_FORMAT_ETC2_R11_EAC] = _mesa_texstore_etc2_r11_eac;
table[MESA_FORMAT_ETC2_RG11_EAC] = _mesa_texstore_etc2_rg11_eac;
table[MESA_FORMAT_ETC2_SIGNED_R11_EAC] = _mesa_texstore_etc2_signed_r11_eac;
table[MESA_FORMAT_ETC2_SIGNED_RG11_EAC] = _mesa_texstore_etc2_signed_rg11_eac;
table[MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1] =
_mesa_texstore_etc2_rgb8_punchthrough_alpha1;
table[MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1] =
_mesa_texstore_etc2_srgb8_punchthrough_alpha1;
table[MESA_FORMAT_BPTC_RGBA_UNORM] =
_mesa_texstore_bptc_rgba_unorm;
table[MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM] =
_mesa_texstore_bptc_rgba_unorm;
table[MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT] =
_mesa_texstore_bptc_rgb_signed_float;
table[MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT] =
_mesa_texstore_bptc_rgb_unsigned_float;
initialized = GL_TRUE;
}
assert(table[dstFormat]);
return table[dstFormat](ctx, dims, baseInternalFormat,
dstFormat, dstRowStride, dstSlices,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr, srcPacking);
}
static GLboolean
texstore_rgba(TEXSTORE_PARAMS)
{
void *tempImage = NULL, *tempRGBA = NULL;
int srcRowStride, img;
GLubyte *src, *dst;
uint32_t srcMesaFormat;
uint8_t rebaseSwizzle[4];
bool needRebase;
bool transferOpsDone = false;
/* We have to handle MESA_FORMAT_YCBCR manually because it is a special case
* and _mesa_format_convert does not support it. In this case the we only
* allow conversions between YCBCR formats and it is mostly a memcpy.
*/
if (dstFormat == MESA_FORMAT_YCBCR || dstFormat == MESA_FORMAT_YCBCR_REV) {
return _mesa_texstore_ycbcr(ctx, dims, baseInternalFormat,
dstFormat, dstRowStride, dstSlices,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr,
srcPacking);
}
/* We have to deal with GL_COLOR_INDEX manually because
* _mesa_format_convert does not handle this format. So what we do here is
* convert it to RGBA ubyte first and then convert from that to dst as usual.
*/
if (srcFormat == GL_COLOR_INDEX) {
/* Notice that this will already handle byte swapping if necessary */
tempImage =
_mesa_unpack_color_index_to_rgba_ubyte(ctx, dims,
srcAddr, srcFormat, srcType,
srcWidth, srcHeight, srcDepth,
srcPacking,
ctx->_ImageTransferState);
if (!tempImage)
return GL_FALSE;
/* _mesa_unpack_color_index_to_rgba_ubyte has handled transferops
* if needed.
*/
transferOpsDone = true;
/* Now we only have to adjust our src info for a conversion from
* the RGBA ubyte and then we continue as usual.
*/
srcAddr = tempImage;
srcFormat = GL_RGBA;
srcType = GL_UNSIGNED_BYTE;
} else if (srcPacking->SwapBytes) {
/* We have to handle byte-swapping scenarios before calling
* _mesa_format_convert
*/
GLint swapSize = _mesa_sizeof_packed_type(srcType);
if (swapSize == 2 || swapSize == 4) {
int bytesPerPixel = _mesa_bytes_per_pixel(srcFormat, srcType);
int swapsPerPixel = bytesPerPixel / swapSize;
int elementCount = srcWidth * srcHeight * srcDepth;
assert(bytesPerPixel % swapSize == 0);
tempImage = malloc(elementCount * bytesPerPixel);
if (!tempImage)
return GL_FALSE;
if (swapSize == 2)
_mesa_swap2_copy(tempImage, (GLushort *) srcAddr,
elementCount * swapsPerPixel);
else
_mesa_swap4_copy(tempImage, (GLuint *) srcAddr,
elementCount * swapsPerPixel);
srcAddr = tempImage;
}
}
srcRowStride =
_mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType);
srcMesaFormat = _mesa_format_from_format_and_type(srcFormat, srcType);
dstFormat = _mesa_get_srgb_format_linear(dstFormat);
/* If we have transferOps then we need to convert to RGBA float first,
then apply transferOps, then do the conversion to dst
*/
if (!transferOpsDone &&
_mesa_texstore_needs_transfer_ops(ctx, baseInternalFormat, dstFormat)) {
/* Allocate RGBA float image */
int elementCount = srcWidth * srcHeight * srcDepth;
tempRGBA = malloc(4 * elementCount * sizeof(float));
if (!tempRGBA) {
free(tempImage);
free(tempRGBA);
return GL_FALSE;
}
/* Convert from src to RGBA float */
src = (GLubyte *) srcAddr;
dst = (GLubyte *) tempRGBA;
for (img = 0; img < srcDepth; img++) {
_mesa_format_convert(dst, RGBA32_FLOAT, 4 * srcWidth * sizeof(float),
src, srcMesaFormat, srcRowStride,
srcWidth, srcHeight, NULL);
src += srcHeight * srcRowStride;
dst += srcHeight * 4 * srcWidth * sizeof(float);
}
/* Apply transferOps */
_mesa_apply_rgba_transfer_ops(ctx, ctx->_ImageTransferState, elementCount,
(float(*)[4]) tempRGBA);
/* Now we have to adjust our src info for a conversion from
* the RGBA float image and then we continue as usual.
*/
srcAddr = tempRGBA;
srcFormat = GL_RGBA;
srcType = GL_FLOAT;
srcRowStride = srcWidth * 4 * sizeof(float);
srcMesaFormat = RGBA32_FLOAT;
srcPacking = &ctx->DefaultPacking;
}
src = (GLubyte *)
_mesa_image_address(dims, srcPacking, srcAddr, srcWidth, srcHeight,
srcFormat, srcType, 0, 0, 0);
if (_mesa_get_format_base_format(dstFormat) != baseInternalFormat) {
needRebase =
_mesa_compute_rgba2base2rgba_component_mapping(baseInternalFormat,
rebaseSwizzle);
} else {
needRebase = false;
}
for (img = 0; img < srcDepth; img++) {
_mesa_format_convert(dstSlices[img], dstFormat, dstRowStride,
src, srcMesaFormat, srcRowStride,
srcWidth, srcHeight,
needRebase ? rebaseSwizzle : NULL);
src += srcHeight * srcRowStride;
}
free(tempImage);
free(tempRGBA);
return GL_TRUE;
}
GLboolean
_mesa_texstore_needs_transfer_ops(struct gl_context *ctx,
GLenum baseInternalFormat,
mesa_format dstFormat)
{
GLenum dstType;
/* There are different rules depending on the base format. */
switch (baseInternalFormat) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_STENCIL:
return ctx->Pixel.DepthScale != 1.0f ||
ctx->Pixel.DepthBias != 0.0f;
case GL_STENCIL_INDEX:
return GL_FALSE;
default:
/* Color formats.
* Pixel transfer ops (scale, bias, table lookup) do not apply
* to integer formats.
*/
dstType = _mesa_get_format_datatype(dstFormat);
return dstType != GL_INT && dstType != GL_UNSIGNED_INT &&
ctx->_ImageTransferState;
}
}
GLboolean
_mesa_texstore_can_use_memcpy(struct gl_context *ctx,
GLenum baseInternalFormat, mesa_format dstFormat,
GLenum srcFormat, GLenum srcType,
const struct gl_pixelstore_attrib *srcPacking)
{
if (_mesa_texstore_needs_transfer_ops(ctx, baseInternalFormat, dstFormat)) {
return GL_FALSE;
}
/* The base internal format and the base Mesa format must match. */
if (baseInternalFormat != _mesa_get_format_base_format(dstFormat)) {
return GL_FALSE;
}
/* The Mesa format must match the input format and type. */
if (!_mesa_format_matches_format_and_type(dstFormat, srcFormat, srcType,
srcPacking->SwapBytes, NULL)) {
return GL_FALSE;
}
/* Depth texture data needs clamping in following cases:
* - Floating point dstFormat with signed srcType: clamp to [0.0, 1.0].
* - Fixed point dstFormat with signed srcType: clamp to [0, 2^n -1].
*
* All the cases except one (float dstFormat with float srcType) are ruled
* out by _mesa_format_matches_format_and_type() check above. Handle the
* remaining case here.
*/
if ((baseInternalFormat == GL_DEPTH_COMPONENT ||
baseInternalFormat == GL_DEPTH_STENCIL) &&
(srcType == GL_FLOAT ||
srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV)) {
return GL_FALSE;
}
return GL_TRUE;
}
static GLboolean
_mesa_texstore_memcpy(TEXSTORE_PARAMS)
{
if (!_mesa_texstore_can_use_memcpy(ctx, baseInternalFormat, dstFormat,
srcFormat, srcType, srcPacking)) {
return GL_FALSE;
}
memcpy_texture(ctx, dims,
dstFormat,
dstRowStride, dstSlices,
srcWidth, srcHeight, srcDepth, srcFormat, srcType,
srcAddr, srcPacking);
return GL_TRUE;
}
/**
* Store user data into texture memory.
* Called via glTex[Sub]Image1/2/3D()
* \return GL_TRUE for success, GL_FALSE for failure (out of memory).
*/
GLboolean
_mesa_texstore(TEXSTORE_PARAMS)
{
if (_mesa_texstore_memcpy(ctx, dims, baseInternalFormat,
dstFormat,
dstRowStride, dstSlices,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr, srcPacking)) {
return GL_TRUE;
}
if (_mesa_is_depth_or_stencil_format(baseInternalFormat)) {
return texstore_depth_stencil(ctx, dims, baseInternalFormat,
dstFormat, dstRowStride, dstSlices,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr, srcPacking);
} else if (_mesa_is_format_compressed(dstFormat)) {
return texstore_compressed(ctx, dims, baseInternalFormat,
dstFormat, dstRowStride, dstSlices,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr, srcPacking);
} else {
return texstore_rgba(ctx, dims, baseInternalFormat,
dstFormat, dstRowStride, dstSlices,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr, srcPacking);
}
}
/**
* Normally, we'll only _write_ texel data to a texture when we map it.
* But if the user is providing depth or stencil values and the texture
* image is a combined depth/stencil format, we'll actually read from
* the texture buffer too (in order to insert the depth or stencil values.
* \param userFormat the user-provided image format
* \param texFormat the destination texture format
*/
static GLbitfield
get_read_write_mode(GLenum userFormat, mesa_format texFormat)
{
if ((userFormat == GL_STENCIL_INDEX || userFormat == GL_DEPTH_COMPONENT)
&& _mesa_get_format_base_format(texFormat) == GL_DEPTH_STENCIL)
return GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
else
return GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_RANGE_BIT;
}
/**
* Helper function for storing 1D, 2D, 3D whole and subimages into texture
* memory.
* The source of the image data may be user memory or a PBO. In the later
* case, we'll map the PBO, copy from it, then unmap it.
*/
static void
store_texsubimage(struct gl_context *ctx,
struct gl_texture_image *texImage,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint width, GLint height, GLint depth,
GLenum format, GLenum type, const GLvoid *pixels,
const struct gl_pixelstore_attrib *packing,
const char *caller)
{
const GLbitfield mapMode = get_read_write_mode(format, texImage->TexFormat);
const GLenum target = texImage->TexObject->Target;
GLboolean success = GL_FALSE;
GLuint dims, slice, numSlices = 1, sliceOffset = 0;
GLint srcImageStride = 0;
const GLubyte *src;
assert(xoffset + width <= texImage->Width);
assert(yoffset + height <= texImage->Height);
assert(zoffset + depth <= texImage->Depth);
switch (target) {
case GL_TEXTURE_1D:
dims = 1;
break;
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_3D:
dims = 3;
break;
default:
dims = 2;
}
/* get pointer to src pixels (may be in a pbo which we'll map here) */
src = (const GLubyte *)
_mesa_validate_pbo_teximage(ctx, dims, width, height, depth,
format, type, pixels, packing, caller);
if (!src)
return;
/* compute slice info (and do some sanity checks) */
switch (target) {
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_EXTERNAL_OES:
/* one image slice, nothing special needs to be done */
break;
case GL_TEXTURE_1D:
assert(height == 1);
assert(depth == 1);
assert(yoffset == 0);
assert(zoffset == 0);
break;
case GL_TEXTURE_1D_ARRAY:
assert(depth == 1);
assert(zoffset == 0);
numSlices = height;
sliceOffset = yoffset;
height = 1;
yoffset = 0;
srcImageStride = _mesa_image_row_stride(packing, width, format, type);
break;
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
numSlices = depth;
sliceOffset = zoffset;
depth = 1;
zoffset = 0;
srcImageStride = _mesa_image_image_stride(packing, width, height,
format, type);
break;
case GL_TEXTURE_3D:
/* we'll store 3D images as a series of slices */
numSlices = depth;
sliceOffset = zoffset;
srcImageStride = _mesa_image_image_stride(packing, width, height,
format, type);
break;
case GL_TEXTURE_CUBE_MAP_ARRAY:
numSlices = depth;
sliceOffset = zoffset;
srcImageStride = _mesa_image_image_stride(packing, width, height,
format, type);
break;
default:
_mesa_warning(ctx, "Unexpected target 0x%x in store_texsubimage()", target);
return;
}
assert(numSlices == 1 || srcImageStride != 0);
for (slice = 0; slice < numSlices; slice++) {
GLubyte *dstMap;
GLint dstRowStride;
ctx->Driver.MapTextureImage(ctx, texImage,
slice + sliceOffset,
xoffset, yoffset, width, height,
mapMode, &dstMap, &dstRowStride);
if (dstMap) {
/* Note: we're only storing a 2D (or 1D) slice at a time but we need
* to pass the right 'dims' value so that GL_UNPACK_SKIP_IMAGES is
* used for 3D images.
*/
success = _mesa_texstore(ctx, dims, texImage->_BaseFormat,
texImage->TexFormat,
dstRowStride,
&dstMap,
width, height, 1, /* w, h, d */
format, type, src, packing);
ctx->Driver.UnmapTextureImage(ctx, texImage, slice + sliceOffset);
}
src += srcImageStride;
if (!success)
break;
}
if (!success)
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s", caller);
_mesa_unmap_teximage_pbo(ctx, packing);
}
/**
* Fallback code for ctx->Driver.TexImage().
* Basically, allocate storage for the texture image, then copy the
* user's image into it.
*/
void
_mesa_store_teximage(struct gl_context *ctx,
GLuint dims,
struct gl_texture_image *texImage,
GLenum format, GLenum type, const GLvoid *pixels,
const struct gl_pixelstore_attrib *packing)
{
assert(dims == 1 || dims == 2 || dims == 3);
if (texImage->Width == 0 || texImage->Height == 0 || texImage->Depth == 0)
return;
/* allocate storage for texture data */
if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage)) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
return;
}
store_texsubimage(ctx, texImage,
0, 0, 0, texImage->Width, texImage->Height, texImage->Depth,
format, type, pixels, packing, "glTexImage");
}
/*
* Fallback for Driver.TexSubImage().
*/
void
_mesa_store_texsubimage(struct gl_context *ctx, GLuint dims,
struct gl_texture_image *texImage,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint width, GLint height, GLint depth,
GLenum format, GLenum type, const void *pixels,
const struct gl_pixelstore_attrib *packing)
{
store_texsubimage(ctx, texImage,
xoffset, yoffset, zoffset, width, height, depth,
format, type, pixels, packing, "glTexSubImage");
}
static void
clear_image_to_zero(GLubyte *dstMap, GLint dstRowStride,
GLsizei width, GLsizei height,
GLsizei clearValueSize)
{
GLsizei y;
for (y = 0; y < height; y++) {
memset(dstMap, 0, clearValueSize * width);
dstMap += dstRowStride;
}
}
static void
clear_image_to_value(GLubyte *dstMap, GLint dstRowStride,
GLsizei width, GLsizei height,
const GLvoid *clearValue,
GLsizei clearValueSize)
{
GLsizei y, x;
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
memcpy(dstMap, clearValue, clearValueSize);
dstMap += clearValueSize;
}
dstMap += dstRowStride - clearValueSize * width;
}
}
/*
* Fallback for Driver.ClearTexSubImage().
*/
void
_mesa_store_cleartexsubimage(struct gl_context *ctx,
struct gl_texture_image *texImage,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
const GLvoid *clearValue)
{
GLubyte *dstMap;
GLint dstRowStride;
GLsizeiptr clearValueSize;
GLsizei z;
clearValueSize = _mesa_get_format_bytes(texImage->TexFormat);
for (z = 0; z < depth; z++) {
ctx->Driver.MapTextureImage(ctx, texImage,
z + zoffset, xoffset, yoffset,
width, height,
GL_MAP_WRITE_BIT,
&dstMap, &dstRowStride);
if (dstMap == NULL) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glClearTex*Image");
return;
}
if (clearValue) {
clear_image_to_value(dstMap, dstRowStride,
width, height,
clearValue,
clearValueSize);
} else {
clear_image_to_zero(dstMap, dstRowStride,
width, height,
clearValueSize);
}
ctx->Driver.UnmapTextureImage(ctx, texImage, z + zoffset);
}
}
/**
* Fallback for Driver.CompressedTexImage()
*/
void
_mesa_store_compressed_teximage(struct gl_context *ctx, GLuint dims,
struct gl_texture_image *texImage,
GLsizei imageSize, const GLvoid *data)
{
/* only 2D and 3D compressed images are supported at this time */
if (dims == 1) {
_mesa_problem(ctx, "Unexpected glCompressedTexImage1D call");
return;
}
/* This is pretty simple, because unlike the general texstore path we don't
* have to worry about the usual image unpacking or image transfer
* operations.
*/
assert(texImage);
assert(texImage->Width > 0);
assert(texImage->Height > 0);
assert(texImage->Depth > 0);
/* allocate storage for texture data */
if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage)) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage%uD", dims);
return;
}
_mesa_store_compressed_texsubimage(ctx, dims, texImage,
0, 0, 0,
texImage->Width, texImage->Height, texImage->Depth,
texImage->TexFormat,
imageSize, data);
}
/**
* Compute compressed_pixelstore parameters for copying compressed
* texture data.
* \param dims number of texture image dimensions: 1, 2 or 3
* \param texFormat the compressed texture format
* \param width, height, depth size of image to copy
* \param packing pixelstore parameters describing user-space image packing
* \param store returns the compressed_pixelstore parameters
*/
void
_mesa_compute_compressed_pixelstore(GLuint dims, mesa_format texFormat,
GLsizei width, GLsizei height,
GLsizei depth,
const struct gl_pixelstore_attrib *packing,
struct compressed_pixelstore *store)
{
GLuint bw, bh;
_mesa_get_format_block_size(texFormat, &bw, &bh);
store->SkipBytes = 0;
store->TotalBytesPerRow = store->CopyBytesPerRow =
_mesa_format_row_stride(texFormat, width);
store->TotalRowsPerSlice = store->CopyRowsPerSlice =
(height + bh - 1) / bh;
store->CopySlices = depth;
if (packing->CompressedBlockWidth &&
packing->CompressedBlockSize) {
bw = packing->CompressedBlockWidth;
if (packing->RowLength) {
store->TotalBytesPerRow = packing->CompressedBlockSize *
((packing->RowLength + bw - 1) / bw);
}
store->SkipBytes += packing->SkipPixels * packing->CompressedBlockSize / bw;
}
if (dims > 1 && packing->CompressedBlockHeight &&
packing->CompressedBlockSize) {
bh = packing->CompressedBlockHeight;
store->SkipBytes += packing->SkipRows * store->TotalBytesPerRow / bh;
store->CopyRowsPerSlice = (height + bh - 1) / bh; /* rows in blocks */
if (packing->ImageHeight) {
store->TotalRowsPerSlice = (packing->ImageHeight + bh - 1) / bh;
}
}
if (dims > 2 && packing->CompressedBlockDepth &&
packing->CompressedBlockSize) {
int bd = packing->CompressedBlockDepth;
store->SkipBytes += packing->SkipImages * store->TotalBytesPerRow *
store->TotalRowsPerSlice / bd;
}
}
/**
* Fallback for Driver.CompressedTexSubImage()
*/
void
_mesa_store_compressed_texsubimage(struct gl_context *ctx, GLuint dims,
struct gl_texture_image *texImage,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format,
GLsizei imageSize, const GLvoid *data)
{
struct compressed_pixelstore store;
GLint dstRowStride;
GLint i, slice;
GLubyte *dstMap;
const GLubyte *src;
if (dims == 1) {
_mesa_problem(ctx, "Unexpected 1D compressed texsubimage call");
return;
}
_mesa_compute_compressed_pixelstore(dims, texImage->TexFormat,
width, height, depth,
&ctx->Unpack, &store);
/* get pointer to src pixels (may be in a pbo which we'll map here) */
data = _mesa_validate_pbo_compressed_teximage(ctx, dims, imageSize, data,
&ctx->Unpack,
"glCompressedTexSubImage");
if (!data)
return;
src = (const GLubyte *) data + store.SkipBytes;
for (slice = 0; slice < store.CopySlices; slice++) {
/* Map dest texture buffer */
ctx->Driver.MapTextureImage(ctx, texImage, slice + zoffset,
xoffset, yoffset, width, height,
GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_RANGE_BIT,
&dstMap, &dstRowStride);
if (dstMap) {
/* copy rows of blocks */
for (i = 0; i < store.CopyRowsPerSlice; i++) {
memcpy(dstMap, src, store.CopyBytesPerRow);
dstMap += dstRowStride;
src += store.TotalBytesPerRow;
}
ctx->Driver.UnmapTextureImage(ctx, texImage, slice + zoffset);
/* advance to next slice */
src += store.TotalBytesPerRow * (store.TotalRowsPerSlice - store.CopyRowsPerSlice);
}
else {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexSubImage%uD",
dims);
}
}
_mesa_unmap_teximage_pbo(ctx, &ctx->Unpack);
}
|