src/mesa/drivers/dri/nouveau/nouveau_texture.c

   1 /*
   2  * Copyright (C) 2009 Francisco Jerez.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "nouveau_driver.h"
  28 #include "nouveau_context.h"
  29 #include "nouveau_texture.h"
  30 #include "nouveau_fbo.h"
  31 #include "nouveau_util.h"
  32
  33 #include "main/pbo.h"
  34 #include "main/texobj.h"
  35 #include "main/texstore.h"
  36 #include "main/texformat.h"
  37 #include "main/texcompress.h"
  38 #include "main/texgetimage.h"
  39 #include "main/mipmap.h"
  40 #include "main/teximage.h"
  41 #include "drivers/common/meta.h"
  42 #include "swrast/s_texfetch.h"
  43
  44 static struct gl_texture_object *
  45 nouveau_texture_new(struct gl_context *ctx, GLuint name, GLenum target)
  46 {
  47         struct nouveau_texture *nt = CALLOC_STRUCT(nouveau_texture);
  48
  49         _mesa_initialize_texture_object(ctx, &nt->base, name, target);
  50
  51         return &nt->base;
  52 }
  53
  54 static void
  55 nouveau_texture_free(struct gl_context *ctx, struct gl_texture_object *t)
  56 {
  57         struct nouveau_texture *nt = to_nouveau_texture(t);
  58         int i;
  59
  60         for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
  61                 nouveau_surface_ref(NULL, &nt->surfaces[i]);
  62
  63         _mesa_delete_texture_object(ctx, t);
  64 }
  65
  66 static struct gl_texture_image *
  67 nouveau_teximage_new(struct gl_context *ctx)
  68 {
  69         struct nouveau_teximage *nti = CALLOC_STRUCT(nouveau_teximage);
  70
  71         return &nti->base.Base;
  72 }
  73
  74 static void
  75 nouveau_teximage_free(struct gl_context *ctx, struct gl_texture_image *ti)
  76 {
  77         struct nouveau_teximage *nti = to_nouveau_teximage(ti);
  78
  79         nouveau_surface_ref(NULL, &nti->surface);
  80 }
  81
  82 static void
  83 nouveau_map_texture_image(struct gl_context *ctx,
  84                           struct gl_texture_image *ti,
  85                           GLuint slice,
  86                           GLuint x, GLuint y, GLuint w, GLuint h,
  87                           GLbitfield mode,
  88                           GLubyte **map,
  89                           GLint *stride)
  90 {
  91         struct nouveau_teximage *nti = to_nouveau_teximage(ti);
  92         struct nouveau_surface *s = &nti->surface;
  93         struct nouveau_surface *st = &nti->transfer.surface;
  94         struct nouveau_client *client = context_client(ctx);
  95
  96         /* Nouveau has no support for 3D or cubemap textures. */
  97         assert(slice == 0);
  98
  99         if (s->bo) {
 100                 if (!(mode & GL_MAP_READ_BIT) &&
 101                     nouveau_pushbuf_refd(context_push(ctx), s->bo)) {
 102                         unsigned size;
 103                         /*
 104                          * Heuristic: use a bounce buffer to pipeline
 105                          * teximage transfers.
 106                          */
 107                         st->layout = LINEAR;
 108                         st->format = s->format;
 109                         st->cpp = s->cpp;
 110                         st->width = w;
 111                         st->height = h;
 112                         st->pitch = s->pitch;
 113                         nti->transfer.x = x;
 114                         nti->transfer.y = y;
 115
 116                         size = get_format_blocksy(st->format, h) * st->pitch;
 117                         *map = nouveau_get_scratch(ctx, size,
 118                                           &st->bo, &st->offset);
 119                         *stride = st->pitch;
 120                 } else {
 121                         int ret, flags = 0;
 122
 123                         if (mode & GL_MAP_READ_BIT)
 124                                 flags |= NOUVEAU_BO_RD;
 125                         if (mode & GL_MAP_WRITE_BIT)
 126                                 flags |= NOUVEAU_BO_WR;
 127
 128                         if (!s->bo->map) {
 129                                 ret = nouveau_bo_map(s->bo, flags, client);
 130                                 assert(!ret);
 131                         }
 132
 133                         *map = s->bo->map +
 134                                 get_format_blocksy(s->format, y) * s->pitch +
 135                                 get_format_blocksx(s->format, x) * s->cpp;
 136                         *stride = s->pitch;
 137                 }
 138         } else {
 139                 *map = nti->base.Buffer +
 140                         get_format_blocksy(s->format, y) * s->pitch +
 141                         get_format_blocksx(s->format, x) * s->cpp;
 142                 *stride = s->pitch;
 143         }
 144 }
 145
 146 static void
 147 nouveau_unmap_texture_image(struct gl_context *ctx, struct gl_texture_image *ti,
 148                             GLuint slice)
 149 {
 150         struct nouveau_teximage *nti = to_nouveau_teximage(ti);
 151         struct nouveau_surface *s = &nti->surface;
 152         struct nouveau_surface *st = &nti->transfer.surface;
 153
 154         if (st->bo) {
 155                 context_drv(ctx)->surface_copy(ctx, s, st, nti->transfer.x,
 156                                                nti->transfer.y, 0, 0,
 157                                                st->width, st->height);
 158                 nouveau_surface_ref(NULL, st);
 159
 160         }
 161 }
 162
 163 static mesa_format
 164 nouveau_choose_tex_format(struct gl_context *ctx, GLenum target,
 165                           GLint internalFormat,
 166                           GLenum srcFormat, GLenum srcType)
 167 {
 168         switch (internalFormat) {
 169         case 4:
 170         case GL_RGBA:
 171         case GL_RGBA2:
 172         case GL_RGBA4:
 173         case GL_RGBA8:
 174         case GL_RGBA12:
 175         case GL_RGBA16:
 176         case GL_RGB10_A2:
 177         case GL_COMPRESSED_RGBA:
 178                 return MESA_FORMAT_B8G8R8A8_UNORM;
 179         case GL_RGB5_A1:
 180                 return MESA_FORMAT_B5G5R5A1_UNORM;
 181
 182         case GL_RGB:
 183         case GL_RGB8:
 184         case GL_RGB10:
 185         case GL_RGB12:
 186         case GL_RGB16:
 187         case GL_COMPRESSED_RGB:
 188                 return MESA_FORMAT_B8G8R8X8_UNORM;
 189         case 3:
 190         case GL_R3_G3_B2:
 191         case GL_RGB4:
 192         case GL_RGB5:
 193                 return MESA_FORMAT_B5G6R5_UNORM;
 194
 195         case 2:
 196         case GL_LUMINANCE_ALPHA:
 197         case GL_LUMINANCE4_ALPHA4:
 198         case GL_LUMINANCE6_ALPHA2:
 199         case GL_LUMINANCE12_ALPHA4:
 200         case GL_LUMINANCE12_ALPHA12:
 201         case GL_LUMINANCE16_ALPHA16:
 202         case GL_LUMINANCE8_ALPHA8:
 203         case GL_COMPRESSED_LUMINANCE_ALPHA:
 204                 return MESA_FORMAT_B8G8R8A8_UNORM;
 205
 206         case 1:
 207         case GL_LUMINANCE:
 208         case GL_LUMINANCE4:
 209         case GL_LUMINANCE12:
 210         case GL_LUMINANCE16:
 211         case GL_LUMINANCE8:
 212         case GL_COMPRESSED_LUMINANCE:
 213                 return MESA_FORMAT_L_UNORM8;
 214
 215         case GL_ALPHA:
 216         case GL_ALPHA4:
 217         case GL_ALPHA12:
 218         case GL_ALPHA16:
 219         case GL_ALPHA8:
 220         case GL_COMPRESSED_ALPHA:
 221                 return MESA_FORMAT_A_UNORM8;
 222
 223         case GL_INTENSITY:
 224         case GL_INTENSITY4:
 225         case GL_INTENSITY12:
 226         case GL_INTENSITY16:
 227         case GL_INTENSITY8:
 228         case GL_COMPRESSED_INTENSITY:
 229                 return MESA_FORMAT_I_UNORM8;
 230
 231         case GL_RGB_S3TC:
 232         case GL_RGB4_S3TC:
 233         case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
 234                 return MESA_FORMAT_RGB_DXT1;
 235
 236         case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
 237                 return MESA_FORMAT_RGBA_DXT1;
 238
 239         case GL_RGBA_S3TC:
 240         case GL_RGBA4_S3TC:
 241         case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
 242                 return MESA_FORMAT_RGBA_DXT3;
 243
 244         case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
 245                 return MESA_FORMAT_RGBA_DXT5;
 246
 247         default:
 248                 assert(0);
 249         }
 250 }
 251
 252 static GLboolean
 253 teximage_fits(struct gl_texture_object *t, int level)
 254 {
 255         struct nouveau_surface *s = &to_nouveau_texture(t)->surfaces[level];
 256         struct gl_texture_image *ti = t->Image[0][level];
 257
 258         if (!ti || !to_nouveau_teximage(ti)->surface.bo)
 259                 return GL_FALSE;
 260
 261         if (level == t->BaseLevel && (s->offset & 0x7f))
 262                 return GL_FALSE;
 263
 264         return t->Target == GL_TEXTURE_RECTANGLE ||
 265                 (s->bo && s->format == ti->TexFormat &&
 266                  s->width == ti->Width && s->height == ti->Height);
 267 }
 268
 269 static GLboolean
 270 validate_teximage(struct gl_context *ctx, struct gl_texture_object *t,
 271                   int level, int x, int y, int z,
 272                   int width, int height, int depth)
 273 {
 274         struct gl_texture_image *ti = t->Image[0][level];
 275
 276         if (teximage_fits(t, level)) {
 277                 struct nouveau_surface *ss = to_nouveau_texture(t)->surfaces;
 278                 struct nouveau_surface *s = &to_nouveau_teximage(ti)->surface;
 279
 280                 if (t->Target == GL_TEXTURE_RECTANGLE)
 281                         nouveau_surface_ref(s, &ss[level]);
 282                 else
 283                         context_drv(ctx)->surface_copy(ctx, &ss[level], s,
 284                                                        x, y, x, y,
 285                                                        width, height);
 286
 287                 return GL_TRUE;
 288         }
 289
 290         return GL_FALSE;
 291 }
 292
 293 static int
 294 get_last_level(struct gl_texture_object *t)
 295 {
 296         struct gl_texture_image *base = t->Image[0][t->BaseLevel];
 297
 298         if (t->Sampler.MinFilter == GL_NEAREST ||
 299             t->Sampler.MinFilter == GL_LINEAR || !base)
 300                 return t->BaseLevel;
 301         else
 302                 return MIN2(t->BaseLevel + base->MaxNumLevels - 1, t->MaxLevel);
 303 }
 304
 305 static void
 306 relayout_texture(struct gl_context *ctx, struct gl_texture_object *t)
 307 {
 308         struct gl_texture_image *base = t->Image[0][t->BaseLevel];
 309
 310         if (base && t->Target != GL_TEXTURE_RECTANGLE) {
 311                 struct nouveau_surface *ss = to_nouveau_texture(t)->surfaces;
 312                 struct nouveau_surface *s = &to_nouveau_teximage(base)->surface;
 313                 int i, ret, last = get_last_level(t);
 314                 enum nouveau_surface_layout layout =
 315                         (_mesa_is_format_compressed(s->format) ? LINEAR : SWIZZLED);
 316                 unsigned size, pitch, offset = 0,
 317                         width = s->width,
 318                         height = s->height;
 319
 320                 /* Deallocate the old storage. */
 321                 for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
 322                         nouveau_bo_ref(NULL, &ss[i].bo);
 323
 324                 /* Relayout the mipmap tree. */
 325                 for (i = t->BaseLevel; i <= last; i++) {
 326                         pitch = _mesa_format_row_stride(s->format, width);
 327                         size = get_format_blocksy(s->format, height) * pitch;
 328
 329                         /* Images larger than 16B have to be aligned. */
 330                         if (size > 16)
 331                                 offset = align(offset, 64);
 332
 333                         ss[i] = (struct nouveau_surface) {
 334                                 .offset = offset,
 335                                 .layout = layout,
 336                                 .format = s->format,
 337                                 .width = width,
 338                                 .height = height,
 339                                 .cpp = s->cpp,
 340                                 .pitch = pitch,
 341                         };
 342
 343                         offset += size;
 344                         width = minify(width, 1);
 345                         height = minify(height, 1);
 346                 }
 347
 348                 if (t->BaseLevel <= last) {
 349                         /* Get new storage. */
 350                         size = align(offset, 64);
 351                         assert(size);
 352
 353                         ret = nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_MAP |
 354                                              NOUVEAU_BO_GART | NOUVEAU_BO_VRAM,
 355                                              0, size, NULL, &ss[last].bo);
 356                         assert(!ret);
 357
 358                         for (i = t->BaseLevel; i < last; i++)
 359                                 nouveau_bo_ref(ss[last].bo, &ss[i].bo);
 360                 }
 361         }
 362 }
 363
 364 GLboolean
 365 nouveau_texture_validate(struct gl_context *ctx, struct gl_texture_object *t)
 366 {
 367         struct nouveau_texture *nt = to_nouveau_texture(t);
 368         int i, last = get_last_level(t);
 369
 370         if (!teximage_fits(t, t->BaseLevel) ||
 371             !teximage_fits(t, last))
 372                 return GL_FALSE;
 373
 374         if (nt->dirty) {
 375                 nt->dirty = GL_FALSE;
 376
 377                 /* Copy the teximages to the actual miptree. */
 378                 for (i = t->BaseLevel; i <= last; i++) {
 379                         struct nouveau_surface *s = &nt->surfaces[i];
 380
 381                         validate_teximage(ctx, t, i, 0, 0, 0,
 382                                           s->width, s->height, 1);
 383                 }
 384
 385                 PUSH_KICK(context_push(ctx));
 386         }
 387
 388         return GL_TRUE;
 389 }
 390
 391 void
 392 nouveau_texture_reallocate(struct gl_context *ctx, struct gl_texture_object *t)
 393 {
 394         if (!teximage_fits(t, t->BaseLevel) ||
 395             !teximage_fits(t, get_last_level(t))) {
 396                 texture_dirty(t);
 397                 relayout_texture(ctx, t);
 398                 nouveau_texture_validate(ctx, t);
 399         }
 400 }
 401
 402 static unsigned
 403 get_teximage_placement(struct gl_texture_image *ti)
 404 {
 405         if (ti->TexFormat == MESA_FORMAT_A_UNORM8 ||
 406             ti->TexFormat == MESA_FORMAT_L_UNORM8 ||
 407             ti->TexFormat == MESA_FORMAT_I_UNORM8)
 408                 /* 1 cpp formats will have to be swizzled by the CPU,
 409                  * so leave them in system RAM for now. */
 410                 return NOUVEAU_BO_MAP;
 411         else
 412                 return NOUVEAU_BO_GART | NOUVEAU_BO_MAP;
 413 }
 414
 415 static void
 416 nouveau_compressed_copy(struct gl_context *ctx, GLint dims,
 417                         struct gl_texture_image *ti,
 418                         GLsizei width, GLsizei height, GLsizei depth,
 419                         const GLvoid *src, GLvoid *dst, int row_stride)
 420 {
 421         struct compressed_pixelstore store;
 422         int i;
 423
 424         _mesa_compute_compressed_pixelstore(dims, ti->TexFormat,
 425                                             width, height, depth,
 426                                             &ctx->Unpack, &store);
 427
 428         src += store.SkipBytes;
 429
 430         assert(store.CopySlices == 1);
 431
 432         /* copy rows of blocks */
 433         for (i = 0; i < store.CopyRowsPerSlice; i++) {
 434                 memcpy(dst, src, store.CopyBytesPerRow);
 435                 dst += row_stride;
 436                 src += store.TotalBytesPerRow;
 437         }
 438 }
 439
 440 static void
 441 nouveau_teximage(struct gl_context *ctx, GLint dims,
 442                  struct gl_texture_image *ti,
 443                  GLsizei imageSize,
 444                  GLenum format, GLenum type, const GLvoid *pixels,
 445                  const struct gl_pixelstore_attrib *packing,
 446                  GLboolean compressed)
 447 {
 448         struct gl_texture_object *t = ti->TexObject;
 449         const GLuint level = ti->Level;
 450         struct nouveau_surface *s = &to_nouveau_teximage(ti)->surface;
 451         struct nouveau_teximage *nti = to_nouveau_teximage(ti);
 452         int ret;
 453         GLuint depth = compressed ? 1 : ti->Depth;
 454
 455         /* Allocate a new bo for the image. */
 456         nouveau_surface_alloc(ctx, s, LINEAR, get_teximage_placement(ti),
 457                               ti->TexFormat, ti->Width, ti->Height);
 458         nti->base.RowStride = s->pitch / s->cpp;
 459
 460         if (compressed)
 461                 pixels = _mesa_validate_pbo_compressed_teximage(ctx,
 462                         dims, imageSize,
 463                         pixels, packing, "glCompressedTexImage");
 464         else
 465                 pixels = _mesa_validate_pbo_teximage(ctx,
 466                         dims, ti->Width, ti->Height, depth, format, type,
 467                         pixels, packing, "glTexImage");
 468
 469         if (pixels) {
 470                 GLubyte *map;
 471                 int row_stride;
 472
 473                 /* Store the pixel data. */
 474                 nouveau_map_texture_image(ctx, ti, 0,
 475                                           0, 0, ti->Width, ti->Height,
 476                                           GL_MAP_WRITE_BIT,
 477                                           &map, &row_stride);
 478
 479                 if (compressed) {
 480                         nouveau_compressed_copy(ctx, dims, ti,
 481                                                 ti->Width, ti->Height, depth,
 482                                                 pixels, map, row_stride);
 483                 } else {
 484                         ret = _mesa_texstore(ctx, dims, ti->_BaseFormat,
 485                                              ti->TexFormat,
 486                                              row_stride,
 487                                              &map,
 488                                              ti->Width, ti->Height, depth,
 489                                              format, type, pixels, packing);
 490                         assert(ret);
 491                 }
 492
 493                 nouveau_unmap_texture_image(ctx, ti, 0);
 494                 _mesa_unmap_teximage_pbo(ctx, packing);
 495
 496                 if (!validate_teximage(ctx, t, level, 0, 0, 0,
 497                                        ti->Width, ti->Height, depth))
 498                         /* It doesn't fit, mark it as dirty. */
 499                         texture_dirty(t);
 500         }
 501
 502         if (level == t->BaseLevel) {
 503                 if (!teximage_fits(t, level))
 504                         relayout_texture(ctx, t);
 505                 nouveau_texture_validate(ctx, t);
 506         }
 507
 508         context_dirty_i(ctx, TEX_OBJ, ctx->Texture.CurrentUnit);
 509         context_dirty_i(ctx, TEX_ENV, ctx->Texture.CurrentUnit);
 510 }
 511
 512
 513 static void
 514 nouveau_teximage_123d(struct gl_context *ctx, GLuint dims,
 515                       struct gl_texture_image *ti,
 516                       GLenum format, GLenum type, const GLvoid *pixels,
 517                       const struct gl_pixelstore_attrib *packing)
 518 {
 519         nouveau_teximage(ctx, dims, ti, 0, format, type, pixels,
 520                          packing, GL_FALSE);
 521 }
 522
 523 static void
 524 nouveau_compressed_teximage(struct gl_context *ctx, GLuint dims,
 525                     struct gl_texture_image *ti,
 526                     GLsizei imageSize, const GLvoid *data)
 527 {
 528         nouveau_teximage(ctx, 2, ti, imageSize, 0, 0, data,
 529                          &ctx->Unpack, GL_TRUE);
 530 }
 531
 532 static GLboolean
 533 nouveau_teximage_alloc(struct gl_context *ctx, struct gl_texture_image *ti)
 534 {
 535         nouveau_teximage(ctx, 3, ti, 0, 0, 0, NULL,
 536                          &ctx->DefaultPacking,
 537                          _mesa_is_format_compressed(ti->TexFormat));
 538         return GL_TRUE;
 539 }
 540
 541 static void
 542 nouveau_texsubimage(struct gl_context *ctx, GLint dims,
 543                     struct gl_texture_image *ti,
 544                     GLint xoffset, GLint yoffset, GLint zoffset,
 545                     GLint width, GLint height, GLint depth,
 546                     GLsizei imageSize,
 547                     GLenum format, GLenum type, const void *pixels,
 548                     const struct gl_pixelstore_attrib *packing,
 549                     GLboolean compressed)
 550 {
 551         int ret;
 552
 553         if (compressed)
 554                 pixels = _mesa_validate_pbo_compressed_teximage(ctx,
 555                                 dims, imageSize,
 556                                 pixels, packing, "glCompressedTexSubImage");
 557         else
 558                 pixels = _mesa_validate_pbo_teximage(ctx,
 559                                 dims, width, height, depth, format, type,
 560                                 pixels, packing, "glTexSubImage");
 561
 562         if (pixels) {
 563                 GLubyte *map;
 564                 int row_stride;
 565
 566                 nouveau_map_texture_image(ctx, ti, 0,
 567                                           xoffset, yoffset, width, height,
 568                                           GL_MAP_WRITE_BIT, &map, &row_stride);
 569
 570                 if (compressed) {
 571                         nouveau_compressed_copy(ctx, dims, ti,
 572                                                 width, height, depth,
 573                                                 pixels, map, row_stride);
 574                 } else {
 575                         ret = _mesa_texstore(ctx, dims, ti->_BaseFormat,
 576                                              ti->TexFormat,
 577                                              row_stride, &map,
 578                                              width, height, depth,
 579                                              format, type, pixels, packing);
 580                         assert(ret);
 581                 }
 582
 583                 nouveau_unmap_texture_image(ctx, ti, 0);
 584                 _mesa_unmap_teximage_pbo(ctx, packing);
 585         }
 586
 587         if (!to_nouveau_texture(ti->TexObject)->dirty)
 588                 validate_teximage(ctx, ti->TexObject, ti->Level,
 589                                   xoffset, yoffset, zoffset,
 590                                   width, height, depth);
 591 }
 592
 593 static void
 594 nouveau_texsubimage_123d(struct gl_context *ctx, GLuint dims,
 595                          struct gl_texture_image *ti,
 596                          GLint xoffset, GLint yoffset, GLint zoffset,
 597                          GLint width, GLint height, GLint depth,
 598                          GLenum format, GLenum type, const void *pixels,
 599                          const struct gl_pixelstore_attrib *packing)
 600 {
 601         nouveau_texsubimage(ctx, dims, ti, xoffset, yoffset, zoffset,
 602                             width, height, depth, 0, format, type, pixels,
 603                             packing, GL_FALSE);
 604 }
 605
 606 static void
 607 nouveau_compressed_texsubimage(struct gl_context *ctx, GLuint dims,
 608                        struct gl_texture_image *ti,
 609                        GLint xoffset, GLint yoffset, GLint zoffset,
 610                        GLsizei width, GLint height, GLint depth,
 611                        GLenum format,
 612                        GLint imageSize, const void *data)
 613 {
 614         nouveau_texsubimage(ctx, dims, ti, xoffset, yoffset, zoffset,
 615                           width, height, depth, imageSize, format, 0, data,
 616                           &ctx->Unpack, GL_TRUE);
 617 }
 618
 619 static void
 620 nouveau_bind_texture(struct gl_context *ctx, GLuint texUnit,
 621                      GLenum target, struct gl_texture_object *t)
 622 {
 623         context_dirty_i(ctx, TEX_OBJ, texUnit);
 624         context_dirty_i(ctx, TEX_ENV, texUnit);
 625 }
 626
 627 static mesa_format
 628 get_texbuffer_format(struct gl_renderbuffer *rb, GLint format)
 629 {
 630         struct nouveau_surface *s = &to_nouveau_renderbuffer(rb)->surface;
 631
 632         if (s->cpp < 4)
 633                 return s->format;
 634         else if (format == __DRI_TEXTURE_FORMAT_RGBA)
 635                 return MESA_FORMAT_B8G8R8A8_UNORM;
 636         else
 637                 return MESA_FORMAT_B8G8R8X8_UNORM;
 638 }
 639
 640 void
 641 nouveau_set_texbuffer(__DRIcontext *dri_ctx,
 642                       GLint target, GLint format,
 643                       __DRIdrawable *draw)
 644 {
 645         struct nouveau_context *nctx = dri_ctx->driverPrivate;
 646         struct gl_context *ctx = &nctx->base;
 647         struct gl_framebuffer *fb = draw->driverPrivate;
 648         struct gl_renderbuffer *rb =
 649                 fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
 650         struct gl_texture_object *t = _mesa_get_current_tex_object(ctx, target);
 651         struct gl_texture_image *ti;
 652         struct nouveau_teximage *nti;
 653         struct nouveau_surface *s;
 654
 655         _mesa_lock_texture(ctx, t);
 656         ti = _mesa_get_tex_image(ctx, t, target, 0);
 657         nti = to_nouveau_teximage(ti);
 658         s = &to_nouveau_teximage(ti)->surface;
 659
 660         /* Update the texture surface with the given drawable. */
 661         nouveau_update_renderbuffers(dri_ctx, draw);
 662         nouveau_surface_ref(&to_nouveau_renderbuffer(rb)->surface, s);
 663
 664         s->format = get_texbuffer_format(rb, format);
 665
 666         /* Update the image fields. */
 667         _mesa_init_teximage_fields(ctx, ti, s->width, s->height,
 668                                    1, 0, s->cpp, s->format);
 669         nti->base.RowStride = s->pitch / s->cpp;
 670
 671         /* Try to validate it. */
 672         if (!validate_teximage(ctx, t, 0, 0, 0, 0, s->width, s->height, 1))
 673                 nouveau_texture_reallocate(ctx, t);
 674
 675         context_dirty_i(ctx, TEX_OBJ, ctx->Texture.CurrentUnit);
 676         context_dirty_i(ctx, TEX_ENV, ctx->Texture.CurrentUnit);
 677
 678         _mesa_unlock_texture(ctx, t);
 679 }
 680
 681 void
 682 nouveau_texture_functions_init(struct dd_function_table *functions)
 683 {
 684         functions->NewTextureObject = nouveau_texture_new;
 685         functions->DeleteTexture = nouveau_texture_free;
 686         functions->NewTextureImage = nouveau_teximage_new;
 687         functions->FreeTextureImageBuffer = nouveau_teximage_free;
 688         functions->AllocTextureImageBuffer = nouveau_teximage_alloc;
 689         functions->ChooseTextureFormat = nouveau_choose_tex_format;
 690         functions->TexImage = nouveau_teximage_123d;
 691         functions->TexSubImage = nouveau_texsubimage_123d;
 692         functions->CompressedTexImage = nouveau_compressed_teximage;
 693         functions->CompressedTexSubImage = nouveau_compressed_texsubimage;
 694         functions->BindTexture = nouveau_bind_texture;
 695         functions->MapTextureImage = nouveau_map_texture_image;
 696         functions->UnmapTextureImage = nouveau_unmap_texture_image;
 697 }