src/mesa/drivers/dri/i965/intel_tex_image.c

   1
   2 #include "main/macros.h"
   3 #include "main/mtypes.h"
   4 #include "main/enums.h"
   5 #include "main/bufferobj.h"
   6 #include "main/context.h"
   7 #include "main/formats.h"
   8 #include "main/glformats.h"
   9 #include "main/image.h"
  10 #include "main/pbo.h"
  11 #include "main/renderbuffer.h"
  12 #include "main/texcompress.h"
  13 #include "main/texgetimage.h"
  14 #include "main/texobj.h"
  15 #include "main/teximage.h"
  16 #include "main/texstore.h"
  17
  18 #include "drivers/common/meta.h"
  19
  20 #include "intel_mipmap_tree.h"
  21 #include "intel_buffer_objects.h"
  22 #include "intel_batchbuffer.h"
  23 #include "intel_tex.h"
  24 #include "intel_blit.h"
  25 #include "intel_fbo.h"
  26 #include "intel_image.h"
  27 #include "intel_tiled_memcpy.h"
  28 #include "brw_context.h"
  29
  30 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  31
  32 /* Work back from the specified level of the image to the baselevel and create a
  33  * miptree of that size.
  34  */
  35 struct intel_mipmap_tree *
  36 intel_miptree_create_for_teximage(struct brw_context *brw,
  37                                   struct intel_texture_object *intelObj,
  38                                   struct intel_texture_image *intelImage,
  39                                   uint32_t layout_flags)
  40 {
  41    GLuint lastLevel;
  42    int width, height, depth;
  43    GLuint i;
  44
  45    intel_get_image_dims(&intelImage->base.Base, &width, &height, &depth);
  46
  47    DBG("%s\n", __func__);
  48
  49    /* Figure out image dimensions at start level. */
  50    for (i = intelImage->base.Base.Level; i > 0; i--) {
  51       width <<= 1;
  52       if (height != 1)
  53          height <<= 1;
  54       if (intelObj->base.Target == GL_TEXTURE_3D)
  55          depth <<= 1;
  56    }
  57
  58    /* Guess a reasonable value for lastLevel.  This is probably going
  59     * to be wrong fairly often and might mean that we have to look at
  60     * resizable buffers, or require that buffers implement lazy
  61     * pagetable arrangements.
  62     */
  63    if ((intelObj->base.Sampler.MinFilter == GL_NEAREST ||
  64         intelObj->base.Sampler.MinFilter == GL_LINEAR) &&
  65        intelImage->base.Base.Level == 0 &&
  66        !intelObj->base.GenerateMipmap) {
  67       lastLevel = 0;
  68    } else {
  69       lastLevel = _mesa_get_tex_max_num_levels(intelObj->base.Target,
  70                                                width, height, depth) - 1;
  71    }
  72
  73    return intel_miptree_create(brw,
  74                                intelObj->base.Target,
  75                                intelImage->base.Base.TexFormat,
  76                                0,
  77                                lastLevel,
  78                                width,
  79                                height,
  80                                depth,
  81                                intelImage->base.Base.NumSamples,
  82                                layout_flags | MIPTREE_LAYOUT_TILING_ANY);
  83 }
  84
  85 static void
  86 intelTexImage(struct gl_context * ctx,
  87               GLuint dims,
  88               struct gl_texture_image *texImage,
  89               GLenum format, GLenum type, const void *pixels,
  90               const struct gl_pixelstore_attrib *unpack)
  91 {
  92    struct intel_texture_image *intelImage = intel_texture_image(texImage);
  93    bool ok;
  94
  95    bool tex_busy = intelImage->mt && drm_intel_bo_busy(intelImage->mt->bo);
  96
  97    DBG("%s mesa_format %s target %s format %s type %s level %d %dx%dx%d\n",
  98        __func__, _mesa_get_format_name(texImage->TexFormat),
  99        _mesa_enum_to_string(texImage->TexObject->Target),
 100        _mesa_enum_to_string(format), _mesa_enum_to_string(type),
 101        texImage->Level, texImage->Width, texImage->Height, texImage->Depth);
 102
 103    /* Allocate storage for texture data. */
 104    if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage)) {
 105       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
 106       return;
 107    }
 108
 109    assert(intelImage->mt);
 110
 111    ok = _mesa_meta_pbo_TexSubImage(ctx, dims, texImage, 0, 0, 0,
 112                                    texImage->Width, texImage->Height,
 113                                    texImage->Depth,
 114                                    format, type, pixels,
 115                                    tex_busy, unpack);
 116    if (ok)
 117       return;
 118
 119    ok = intel_texsubimage_tiled_memcpy(ctx, dims, texImage,
 120                                        0, 0, 0, /*x,y,z offsets*/
 121                                        texImage->Width,
 122                                        texImage->Height,
 123                                        texImage->Depth,
 124                                        format, type, pixels, unpack,
 125                                        false /*allocate_storage*/);
 126    if (ok)
 127       return;
 128
 129    DBG("%s: upload image %dx%dx%d pixels %p\n",
 130        __func__, texImage->Width, texImage->Height, texImage->Depth,
 131        pixels);
 132
 133    _mesa_store_teximage(ctx, dims, texImage,
 134                         format, type, pixels, unpack);
 135 }
 136
 137
 138 static void
 139 intel_set_texture_image_mt(struct brw_context *brw,
 140                            struct gl_texture_image *image,
 141                            struct intel_mipmap_tree *mt)
 142
 143 {
 144    const uint32_t internal_format = _mesa_get_format_base_format(mt->format);
 145    struct gl_texture_object *texobj = image->TexObject;
 146    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 147    struct intel_texture_image *intel_image = intel_texture_image(image);
 148
 149    _mesa_init_teximage_fields(&brw->ctx, image,
 150                               mt->logical_width0, mt->logical_height0, 1,
 151                               0, internal_format, mt->format);
 152
 153    brw->ctx.Driver.FreeTextureImageBuffer(&brw->ctx, image);
 154
 155    intel_texobj->needs_validate = true;
 156    intel_image->base.RowStride = mt->pitch / mt->cpp;
 157    assert(mt->pitch % mt->cpp == 0);
 158
 159    intel_miptree_reference(&intel_image->mt, mt);
 160
 161    /* Immediately validate the image to the object. */
 162    intel_miptree_reference(&intel_texobj->mt, mt);
 163 }
 164
 165 /**
 166  * Binds a BO to a texture image, as if it was uploaded by glTexImage2D().
 167  *
 168  * Used for GLX_EXT_texture_from_pixmap and EGL image extensions,
 169  */
 170 static struct intel_mipmap_tree *
 171 create_mt_for_dri_image(struct brw_context *brw,
 172                         GLenum target, __DRIimage *image)
 173 {
 174    struct intel_mipmap_tree *mt;
 175    uint32_t draw_x, draw_y;
 176
 177    /* Disable creation of the texture's aux buffers because the driver exposes
 178     * no EGL API to manage them. That is, there is no API for resolving the aux
 179     * buffer's content to the main buffer nor for invalidating the aux buffer's
 180     * content.
 181     */
 182    mt = intel_miptree_create_for_bo(brw, image->bo, image->format,
 183                                     0, image->width, image->height, 1,
 184                                     image->pitch,
 185                                     MIPTREE_LAYOUT_DISABLE_AUX);
 186    if (mt == NULL)
 187       return NULL;
 188
 189    mt->target = target;
 190    mt->total_width = image->width;
 191    mt->total_height = image->height;
 192    mt->level[0].slice[0].x_offset = image->tile_x;
 193    mt->level[0].slice[0].y_offset = image->tile_y;
 194
 195    intel_miptree_get_tile_offsets(mt, 0, 0, &draw_x, &draw_y);
 196
 197    /* From "OES_EGL_image" error reporting. We report GL_INVALID_OPERATION
 198     * for EGL images from non-tile aligned sufaces in gen4 hw and earlier which has
 199     * trouble resolving back to destination image due to alignment issues.
 200     */
 201    if (!brw->has_surface_tile_offset &&
 202        (draw_x != 0 || draw_y != 0)) {
 203       _mesa_error(&brw->ctx, GL_INVALID_OPERATION, __func__);
 204       intel_miptree_release(&mt);
 205       return NULL;
 206    }
 207
 208    mt->offset = image->offset;
 209
 210    return mt;
 211 }
 212
 213 void
 214 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 215                    GLint texture_format,
 216                    __DRIdrawable *dPriv)
 217 {
 218    struct gl_framebuffer *fb = dPriv->driverPrivate;
 219    struct brw_context *brw = pDRICtx->driverPrivate;
 220    struct gl_context *ctx = &brw->ctx;
 221    struct intel_renderbuffer *rb;
 222    struct gl_texture_object *texObj;
 223    struct gl_texture_image *texImage;
 224    mesa_format texFormat = MESA_FORMAT_NONE;
 225    struct intel_mipmap_tree *mt;
 226
 227    texObj = _mesa_get_current_tex_object(ctx, target);
 228
 229    if (!texObj)
 230       return;
 231
 232    if (dPriv->lastStamp != dPriv->dri2.stamp ||
 233        !pDRICtx->driScreenPriv->dri2.useInvalidate)
 234       intel_update_renderbuffers(pDRICtx, dPriv);
 235
 236    rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 237    /* If the miptree isn't set, then intel_update_renderbuffers was unable
 238     * to get the BO for the drawable from the window system.
 239     */
 240    if (!rb || !rb->mt)
 241       return;
 242
 243    if (rb->mt->cpp == 4) {
 244       if (texture_format == __DRI_TEXTURE_FORMAT_RGB) {
 245          texFormat = MESA_FORMAT_B8G8R8X8_UNORM;
 246       }
 247       else {
 248          texFormat = MESA_FORMAT_B8G8R8A8_UNORM;
 249       }
 250    } else if (rb->mt->cpp == 2) {
 251       texFormat = MESA_FORMAT_B5G6R5_UNORM;
 252    }
 253
 254    intel_miptree_make_shareable(brw, rb->mt);
 255    mt = intel_miptree_create_for_bo(brw, rb->mt->bo, texFormat, 0,
 256                                     rb->Base.Base.Width,
 257                                     rb->Base.Base.Height,
 258                                     1, rb->mt->pitch, 0);
 259    if (mt == NULL)
 260        return;
 261    mt->target = target;
 262    mt->total_width = rb->Base.Base.Width;
 263    mt->total_height = rb->Base.Base.Height;
 264
 265    _mesa_lock_texture(&brw->ctx, texObj);
 266    texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
 267    intel_set_texture_image_mt(brw, texImage, mt);
 268    intel_miptree_release(&mt);
 269    _mesa_unlock_texture(&brw->ctx, texObj);
 270 }
 271
 272 static GLboolean
 273 intel_bind_renderbuffer_tex_image(struct gl_context *ctx,
 274                                   struct gl_renderbuffer *rb,
 275                                   struct gl_texture_image *image)
 276 {
 277    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
 278    struct intel_texture_image *intel_image = intel_texture_image(image);
 279    struct gl_texture_object *texobj = image->TexObject;
 280    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 281
 282    /* We can only handle RB allocated with AllocRenderbufferStorage, or
 283     * window-system renderbuffers.
 284     */
 285    assert(!rb->TexImage);
 286
 287    if (!irb->mt)
 288       return false;
 289
 290    _mesa_lock_texture(ctx, texobj);
 291    _mesa_init_teximage_fields(ctx, image,
 292                               rb->Width, rb->Height, 1,
 293                               0, rb->InternalFormat, rb->Format);
 294    image->NumSamples = rb->NumSamples;
 295
 296    intel_miptree_reference(&intel_image->mt, irb->mt);
 297
 298    /* Immediately validate the image to the object. */
 299    intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
 300
 301    intel_texobj->needs_validate = true;
 302    _mesa_unlock_texture(ctx, texobj);
 303
 304    return true;
 305 }
 306
 307 void
 308 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 309 {
 310    /* The old interface didn't have the format argument, so copy our
 311     * implementation's behavior at the time.
 312     */
 313    intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 314 }
 315
 316 static void
 317 intel_image_target_texture_2d(struct gl_context *ctx, GLenum target,
 318                               struct gl_texture_object *texObj,
 319                               struct gl_texture_image *texImage,
 320                               GLeglImageOES image_handle)
 321 {
 322    struct brw_context *brw = brw_context(ctx);
 323    struct intel_mipmap_tree *mt;
 324    __DRIscreen *screen;
 325    __DRIimage *image;
 326
 327    screen = brw->intelScreen->driScrnPriv;
 328    image = screen->dri2.image->lookupEGLImage(screen, image_handle,
 329                                               screen->loaderPrivate);
 330    if (image == NULL)
 331       return;
 332
 333    /* We support external textures only for EGLImages created with
 334     * EGL_EXT_image_dma_buf_import. We may lift that restriction in the future.
 335     */
 336    if (target == GL_TEXTURE_EXTERNAL_OES && !image->dma_buf_imported) {
 337       _mesa_error(ctx, GL_INVALID_OPERATION,
 338             "glEGLImageTargetTexture2DOES(external target is enabled only "
 339                "for images created with EGL_EXT_image_dma_buf_import");
 340       return;
 341    }
 342
 343    /* Disallow depth/stencil textures: we don't have a way to pass the
 344     * separate stencil miptree of a GL_DEPTH_STENCIL texture through.
 345     */
 346    if (image->has_depthstencil) {
 347       _mesa_error(ctx, GL_INVALID_OPERATION, __func__);
 348       return;
 349    }
 350
 351    mt = create_mt_for_dri_image(brw, target, image);
 352    if (mt == NULL)
 353       return;
 354
 355    intel_set_texture_image_mt(brw, texImage, mt);
 356    intel_miptree_release(&mt);
 357 }
 358
 359 /**
 360  * \brief A fast path for glGetTexImage.
 361  *
 362  * \see intel_readpixels_tiled_memcpy()
 363  */
 364 bool
 365 intel_gettexsubimage_tiled_memcpy(struct gl_context *ctx,
 366                                   struct gl_texture_image *texImage,
 367                                   GLint xoffset, GLint yoffset,
 368                                   GLsizei width, GLsizei height,
 369                                   GLenum format, GLenum type,
 370                                   GLvoid *pixels,
 371                                   const struct gl_pixelstore_attrib *packing)
 372 {
 373    struct brw_context *brw = brw_context(ctx);
 374    struct intel_texture_image *image = intel_texture_image(texImage);
 375    int dst_pitch;
 376
 377    /* The miptree's buffer. */
 378    drm_intel_bo *bo;
 379
 380    int error = 0;
 381
 382    uint32_t cpp;
 383    mem_copy_fn mem_copy = NULL;
 384
 385    /* This fastpath is restricted to specific texture types:
 386     * a 2D BGRA, RGBA, L8 or A8 texture. It could be generalized to support
 387     * more types.
 388     *
 389     * FINISHME: The restrictions below on packing alignment and packing row
 390     * length are likely unneeded now because we calculate the destination stride
 391     * with _mesa_image_row_stride. However, before removing the restrictions
 392     * we need tests.
 393     */
 394    if (!brw->has_llc ||
 395        !(type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) ||
 396        !(texImage->TexObject->Target == GL_TEXTURE_2D ||
 397          texImage->TexObject->Target == GL_TEXTURE_RECTANGLE) ||
 398        pixels == NULL ||
 399        _mesa_is_bufferobj(packing->BufferObj) ||
 400        packing->Alignment > 4 ||
 401        packing->SkipPixels > 0 ||
 402        packing->SkipRows > 0 ||
 403        (packing->RowLength != 0 && packing->RowLength != width) ||
 404        packing->SwapBytes ||
 405        packing->LsbFirst ||
 406        packing->Invert)
 407       return false;
 408
 409    /* We can't handle copying from RGBX or BGRX because the tiled_memcpy
 410     * function doesn't set the last channel to 1. Note this checks BaseFormat
 411     * rather than TexFormat in case the RGBX format is being simulated with an
 412     * RGBA format.
 413     */
 414    if (texImage->_BaseFormat == GL_RGB)
 415       return false;
 416
 417    if (!intel_get_memcpy(texImage->TexFormat, format, type, &mem_copy, &cpp))
 418       return false;
 419
 420    /* If this is a nontrivial texture view, let another path handle it instead. */
 421    if (texImage->TexObject->MinLayer)
 422       return false;
 423
 424    if (!image->mt ||
 425        (image->mt->tiling != I915_TILING_X &&
 426        image->mt->tiling != I915_TILING_Y)) {
 427       /* The algorithm is written only for X- or Y-tiled memory. */
 428       return false;
 429    }
 430
 431    /* Since we are going to write raw data to the miptree, we need to resolve
 432     * any pending fast color clears before we start.
 433     */
 434    intel_miptree_resolve_color(brw, image->mt, 0);
 435
 436    bo = image->mt->bo;
 437
 438    if (drm_intel_bo_references(brw->batch.bo, bo)) {
 439       perf_debug("Flushing before mapping a referenced bo.\n");
 440       intel_batchbuffer_flush(brw);
 441    }
 442
 443    error = brw_bo_map(brw, bo, false /* write enable */, "miptree");
 444    if (error) {
 445       DBG("%s: failed to map bo\n", __func__);
 446       return false;
 447    }
 448
 449    dst_pitch = _mesa_image_row_stride(packing, width, format, type);
 450
 451    DBG("%s: level=%d x,y=(%d,%d) (w,h)=(%d,%d) format=0x%x type=0x%x "
 452        "mesa_format=0x%x tiling=%d "
 453        "packing=(alignment=%d row_length=%d skip_pixels=%d skip_rows=%d)\n",
 454        __func__, texImage->Level, xoffset, yoffset, width, height,
 455        format, type, texImage->TexFormat, image->mt->tiling,
 456        packing->Alignment, packing->RowLength, packing->SkipPixels,
 457        packing->SkipRows);
 458
 459    int level = texImage->Level + texImage->TexObject->MinLevel;
 460
 461    /* Adjust x and y offset based on miplevel */
 462    xoffset += image->mt->level[level].level_x;
 463    yoffset += image->mt->level[level].level_y;
 464
 465    tiled_to_linear(
 466       xoffset * cpp, (xoffset + width) * cpp,
 467       yoffset, yoffset + height,
 468       pixels - (ptrdiff_t) yoffset * dst_pitch - (ptrdiff_t) xoffset * cpp,
 469       bo->virtual,
 470       dst_pitch, image->mt->pitch,
 471       brw->has_swizzling,
 472       image->mt->tiling,
 473       mem_copy
 474    );
 475
 476    drm_intel_bo_unmap(bo);
 477    return true;
 478 }
 479
 480 static void
 481 intel_get_tex_sub_image(struct gl_context *ctx,
 482                         GLint xoffset, GLint yoffset, GLint zoffset,
 483                         GLsizei width, GLsizei height, GLint depth,
 484                         GLenum format, GLenum type, GLvoid *pixels,
 485                         struct gl_texture_image *texImage)
 486 {
 487    struct brw_context *brw = brw_context(ctx);
 488    bool ok;
 489
 490    DBG("%s\n", __func__);
 491
 492    if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
 493       if (_mesa_meta_pbo_GetTexSubImage(ctx, 3, texImage,
 494                                         xoffset, yoffset, zoffset,
 495                                         width, height, depth, format, type,
 496                                         pixels, &ctx->Pack)) {
 497          /* Flush to guarantee coherency between the render cache and other
 498           * caches the PBO could potentially be bound to after this point.
 499           * See the related comment in intelReadPixels() for a more detailed
 500           * explanation.
 501           */
 502          brw_emit_mi_flush(brw);
 503          return;
 504       }
 505
 506       perf_debug("%s: fallback to CPU mapping in PBO case\n", __func__);
 507    }
 508
 509    ok = intel_gettexsubimage_tiled_memcpy(ctx, texImage, xoffset, yoffset,
 510                                           width, height,
 511                                           format, type, pixels, &ctx->Pack);
 512
 513    if(ok)
 514       return;
 515
 516    _mesa_meta_GetTexSubImage(ctx, xoffset, yoffset, zoffset,
 517                              width, height, depth,
 518                              format, type, pixels, texImage);
 519
 520    DBG("%s - DONE\n", __func__);
 521 }
 522
 523 static void
 524 flush_astc_denorms(struct gl_context *ctx, GLuint dims,
 525                    struct gl_texture_image *texImage,
 526                    GLint xoffset, GLint yoffset, GLint zoffset,
 527                    GLsizei width, GLsizei height, GLsizei depth)
 528 {
 529    struct compressed_pixelstore store;
 530    _mesa_compute_compressed_pixelstore(dims, texImage->TexFormat,
 531                                        width, height, depth,
 532                                        &ctx->Unpack, &store);
 533
 534    for (int slice = 0; slice < store.CopySlices; slice++) {
 535
 536       /* Map dest texture buffer */
 537       GLubyte *dstMap;
 538       GLint dstRowStride;
 539       ctx->Driver.MapTextureImage(ctx, texImage, slice + zoffset,
 540                                   xoffset, yoffset, width, height,
 541                                   GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
 542                                   &dstMap, &dstRowStride);
 543       if (!dstMap)
 544          continue;
 545
 546       for (int i = 0; i < store.CopyRowsPerSlice; i++) {
 547
 548          /* An ASTC block is stored in little endian mode. The byte that
 549           * contains bits 0..7 is stored at the lower address in memory.
 550           */
 551          struct astc_void_extent {
 552             uint16_t header : 12;
 553             uint16_t dontcare[3];
 554             uint16_t R;
 555             uint16_t G;
 556             uint16_t B;
 557             uint16_t A;
 558          } *blocks = (struct astc_void_extent*) dstMap;
 559
 560          /* Iterate over every copied block in the row */
 561          for (int j = 0; j < store.CopyBytesPerRow / 16; j++) {
 562
 563             /* Check if the header matches that of an LDR void-extent block */
 564             if (blocks[j].header == 0xDFC) {
 565
 566                /* Flush UNORM16 values that would be denormalized */
 567                if (blocks[j].A < 4) blocks[j].A = 0;
 568                if (blocks[j].B < 4) blocks[j].B = 0;
 569                if (blocks[j].G < 4) blocks[j].G = 0;
 570                if (blocks[j].R < 4) blocks[j].R = 0;
 571             }
 572          }
 573
 574          dstMap += dstRowStride;
 575       }
 576
 577       ctx->Driver.UnmapTextureImage(ctx, texImage, slice + zoffset);
 578    }
 579 }
 580
 581
 582 static void
 583 intelCompressedTexSubImage(struct gl_context *ctx, GLuint dims,
 584                         struct gl_texture_image *texImage,
 585                         GLint xoffset, GLint yoffset, GLint zoffset,
 586                         GLsizei width, GLsizei height, GLsizei depth,
 587                         GLenum format,
 588                         GLsizei imageSize, const GLvoid *data)
 589 {
 590    /* Upload the compressed data blocks */
 591    _mesa_store_compressed_texsubimage(ctx, dims, texImage,
 592                                       xoffset, yoffset, zoffset,
 593                                       width, height, depth,
 594                                       format, imageSize, data);
 595
 596    /* Fix up copied ASTC blocks if necessary */
 597    GLenum gl_format = _mesa_compressed_format_to_glenum(ctx,
 598                                                         texImage->TexFormat);
 599    bool is_linear_astc = _mesa_is_astc_format(gl_format) &&
 600                         !_mesa_is_srgb_format(gl_format);
 601    struct brw_context *brw = (struct brw_context*) ctx;
 602    if (brw->gen == 9 && is_linear_astc)
 603       flush_astc_denorms(ctx, dims, texImage,
 604                          xoffset, yoffset, zoffset,
 605                          width, height, depth);
 606 }
 607
 608 void
 609 intelInitTextureImageFuncs(struct dd_function_table *functions)
 610 {
 611    functions->TexImage = intelTexImage;
 612    functions->CompressedTexSubImage = intelCompressedTexSubImage;
 613    functions->EGLImageTargetTexture2D = intel_image_target_texture_2d;
 614    functions->BindRenderbufferTexImage = intel_bind_renderbuffer_tex_image;
 615    functions->GetTexSubImage = intel_get_tex_sub_image;
 616 }