src/mesa/state_tracker/st_cb_bufferobjects.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 /**
  30  * Functions for pixel buffer objects and vertex/element buffer objects.
  31  */
  32
  33
  34 #include <inttypes.h>  /* for PRId64 macro */
  35
  36 #include "main/imports.h"
  37 #include "main/mtypes.h"
  38 #include "main/arrayobj.h"
  39 #include "main/bufferobj.h"
  40
  41 #include "st_context.h"
  42 #include "st_cb_bufferobjects.h"
  43 #include "st_cb_memoryobjects.h"
  44 #include "st_debug.h"
  45
  46 #include "pipe/p_context.h"
  47 #include "pipe/p_defines.h"
  48 #include "util/u_inlines.h"
  49
  50
  51 /**
  52  * There is some duplication between mesa's bufferobjects and our
  53  * bufmgr buffers.  Both have an integer handle and a hashtable to
  54  * lookup an opaque structure.  It would be nice if the handles and
  55  * internal structure where somehow shared.
  56  */
  57 static struct gl_buffer_object *
  58 st_bufferobj_alloc(struct gl_context *ctx, GLuint name)
  59 {
  60    struct st_buffer_object *st_obj = ST_CALLOC_STRUCT(st_buffer_object);
  61
  62    if (!st_obj)
  63       return NULL;
  64
  65    _mesa_initialize_buffer_object(ctx, &st_obj->Base, name);
  66
  67    return &st_obj->Base;
  68 }
  69
  70
  71
  72 /**
  73  * Deallocate/free a vertex/pixel buffer object.
  74  * Called via glDeleteBuffersARB().
  75  */
  76 static void
  77 st_bufferobj_free(struct gl_context *ctx, struct gl_buffer_object *obj)
  78 {
  79    struct st_buffer_object *st_obj = st_buffer_object(obj);
  80
  81    assert(obj->RefCount == 0);
  82    _mesa_buffer_unmap_all_mappings(ctx, obj);
  83
  84    if (st_obj->buffer)
  85       pipe_resource_reference(&st_obj->buffer, NULL);
  86
  87    _mesa_delete_buffer_object(ctx, obj);
  88 }
  89
  90
  91
  92 /**
  93  * Replace data in a subrange of buffer object.  If the data range
  94  * specified by size + offset extends beyond the end of the buffer or
  95  * if data is NULL, no copy is performed.
  96  * Called via glBufferSubDataARB().
  97  */
  98 static void
  99 st_bufferobj_subdata(struct gl_context *ctx,
 100                      GLintptrARB offset,
 101                      GLsizeiptrARB size,
 102                      const void * data, struct gl_buffer_object *obj)
 103 {
 104    struct st_buffer_object *st_obj = st_buffer_object(obj);
 105
 106    /* we may be called from VBO code, so double-check params here */
 107    assert(offset >= 0);
 108    assert(size >= 0);
 109    assert(offset + size <= obj->Size);
 110
 111    if (!size)
 112       return;
 113
 114    /*
 115     * According to ARB_vertex_buffer_object specification, if data is null,
 116     * then the contents of the buffer object's data store is undefined. We just
 117     * ignore, and leave it unchanged.
 118     */
 119    if (!data)
 120       return;
 121
 122    if (!st_obj->buffer) {
 123       /* we probably ran out of memory during buffer allocation */
 124       return;
 125    }
 126
 127    /* Now that transfers are per-context, we don't have to figure out
 128     * flushing here.  Usually drivers won't need to flush in this case
 129     * even if the buffer is currently referenced by hardware - they
 130     * just queue the upload as dma rather than mapping the underlying
 131     * buffer directly.
 132     */
 133    pipe_buffer_write(st_context(ctx)->pipe,
 134                      st_obj->buffer,
 135                      offset, size, data);
 136 }
 137
 138
 139 /**
 140  * Called via glGetBufferSubDataARB().
 141  */
 142 static void
 143 st_bufferobj_get_subdata(struct gl_context *ctx,
 144                          GLintptrARB offset,
 145                          GLsizeiptrARB size,
 146                          void * data, struct gl_buffer_object *obj)
 147 {
 148    struct st_buffer_object *st_obj = st_buffer_object(obj);
 149
 150    /* we may be called from VBO code, so double-check params here */
 151    assert(offset >= 0);
 152    assert(size >= 0);
 153    assert(offset + size <= obj->Size);
 154
 155    if (!size)
 156       return;
 157
 158    if (!st_obj->buffer) {
 159       /* we probably ran out of memory during buffer allocation */
 160       return;
 161    }
 162
 163    pipe_buffer_read(st_context(ctx)->pipe, st_obj->buffer,
 164                     offset, size, data);
 165 }
 166
 167
 168 /**
 169  * Return bitmask of PIPE_BIND_x flags corresponding a GL buffer target.
 170  */
 171 static unsigned
 172 buffer_target_to_bind_flags(GLenum target)
 173 {
 174    switch (target) {
 175    case GL_PIXEL_PACK_BUFFER_ARB:
 176    case GL_PIXEL_UNPACK_BUFFER_ARB:
 177       return PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 178    case GL_ARRAY_BUFFER_ARB:
 179       return PIPE_BIND_VERTEX_BUFFER;
 180    case GL_ELEMENT_ARRAY_BUFFER_ARB:
 181       return PIPE_BIND_INDEX_BUFFER;
 182    case GL_TEXTURE_BUFFER:
 183       return PIPE_BIND_SAMPLER_VIEW;
 184    case GL_TRANSFORM_FEEDBACK_BUFFER:
 185       return PIPE_BIND_STREAM_OUTPUT;
 186    case GL_UNIFORM_BUFFER:
 187       return PIPE_BIND_CONSTANT_BUFFER;
 188    case GL_DRAW_INDIRECT_BUFFER:
 189    case GL_PARAMETER_BUFFER_ARB:
 190       return PIPE_BIND_COMMAND_ARGS_BUFFER;
 191    case GL_ATOMIC_COUNTER_BUFFER:
 192    case GL_SHADER_STORAGE_BUFFER:
 193       return PIPE_BIND_SHADER_BUFFER;
 194    case GL_QUERY_BUFFER:
 195       return PIPE_BIND_QUERY_BUFFER;
 196    default:
 197       return 0;
 198    }
 199 }
 200
 201
 202 /**
 203  * Return bitmask of PIPE_RESOURCE_x flags corresponding to GL_MAP_x flags.
 204  */
 205 static unsigned
 206 storage_flags_to_buffer_flags(GLbitfield storageFlags)
 207 {
 208    unsigned flags = 0;
 209    if (storageFlags & GL_MAP_PERSISTENT_BIT)
 210       flags |= PIPE_RESOURCE_FLAG_MAP_PERSISTENT;
 211    if (storageFlags & GL_MAP_COHERENT_BIT)
 212       flags |= PIPE_RESOURCE_FLAG_MAP_COHERENT;
 213    if (storageFlags & GL_SPARSE_STORAGE_BIT_ARB)
 214       flags |= PIPE_RESOURCE_FLAG_SPARSE;
 215    return flags;
 216 }
 217
 218
 219 /**
 220  * From a buffer object's target, immutability flag, storage flags and
 221  * usage hint, return a pipe_resource_usage value (PIPE_USAGE_DYNAMIC,
 222  * STREAM, etc).
 223  */
 224 static const enum pipe_resource_usage
 225 buffer_usage(GLenum target, GLboolean immutable,
 226              GLbitfield storageFlags, GLenum usage)
 227 {
 228    if (immutable) {
 229       /* BufferStorage */
 230       if (storageFlags & GL_CLIENT_STORAGE_BIT) {
 231          if (storageFlags & GL_MAP_READ_BIT)
 232             return PIPE_USAGE_STAGING;
 233          else
 234             return PIPE_USAGE_STREAM;
 235       } else {
 236          return PIPE_USAGE_DEFAULT;
 237       }
 238    }
 239    else {
 240       /* BufferData */
 241       switch (usage) {
 242       case GL_DYNAMIC_DRAW:
 243       case GL_DYNAMIC_COPY:
 244          return PIPE_USAGE_DYNAMIC;
 245       case GL_STREAM_DRAW:
 246       case GL_STREAM_COPY:
 247          /* XXX: Remove this test and fall-through when we have PBO unpacking
 248           * acceleration. Right now, PBO unpacking is done by the CPU, so we
 249           * have to make sure CPU reads are fast.
 250           */
 251          if (target != GL_PIXEL_UNPACK_BUFFER_ARB) {
 252             return PIPE_USAGE_STREAM;
 253          }
 254          /* fall through */
 255       case GL_STATIC_READ:
 256       case GL_DYNAMIC_READ:
 257       case GL_STREAM_READ:
 258          return PIPE_USAGE_STAGING;
 259       case GL_STATIC_DRAW:
 260       case GL_STATIC_COPY:
 261       default:
 262          return PIPE_USAGE_DEFAULT;
 263       }
 264    }
 265 }
 266
 267
 268 static ALWAYS_INLINE GLboolean
 269 bufferobj_data(struct gl_context *ctx,
 270                GLenum target,
 271                GLsizeiptrARB size,
 272                const void *data,
 273                struct gl_memory_object *memObj,
 274                GLuint64 offset,
 275                GLenum usage,
 276                GLbitfield storageFlags,
 277                struct gl_buffer_object *obj)
 278 {
 279    struct st_context *st = st_context(ctx);
 280    struct pipe_context *pipe = st->pipe;
 281    struct pipe_screen *screen = pipe->screen;
 282    struct st_buffer_object *st_obj = st_buffer_object(obj);
 283    struct st_memory_object *st_mem_obj = st_memory_object(memObj);
 284
 285    if (target != GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD &&
 286        size && st_obj->buffer &&
 287        st_obj->Base.Size == size &&
 288        st_obj->Base.Usage == usage &&
 289        st_obj->Base.StorageFlags == storageFlags) {
 290       if (data) {
 291          /* Just discard the old contents and write new data.
 292           * This should be the same as creating a new buffer, but we avoid
 293           * a lot of validation in Mesa.
 294           */
 295          pipe->buffer_subdata(pipe, st_obj->buffer,
 296                               PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE,
 297                               0, size, data);
 298          return GL_TRUE;
 299       } else if (screen->get_param(screen, PIPE_CAP_INVALIDATE_BUFFER)) {
 300          pipe->invalidate_resource(pipe, st_obj->buffer);
 301          return GL_TRUE;
 302       }
 303    }
 304
 305    st_obj->Base.Size = size;
 306    st_obj->Base.Usage = usage;
 307    st_obj->Base.StorageFlags = storageFlags;
 308
 309    pipe_resource_reference( &st_obj->buffer, NULL );
 310
 311    const unsigned bindings = buffer_target_to_bind_flags(target);
 312
 313    if (ST_DEBUG & DEBUG_BUFFER) {
 314       debug_printf("Create buffer size %" PRId64 " bind 0x%x\n",
 315                    (int64_t) size, bindings);
 316    }
 317
 318    if (size != 0) {
 319       struct pipe_resource buffer;
 320
 321       memset(&buffer, 0, sizeof buffer);
 322       buffer.target = PIPE_BUFFER;
 323       buffer.format = PIPE_FORMAT_R8_UNORM; /* want TYPELESS or similar */
 324       buffer.bind = bindings;
 325       buffer.usage =
 326          buffer_usage(target, st_obj->Base.Immutable, storageFlags, usage);
 327       buffer.flags = storage_flags_to_buffer_flags(storageFlags);
 328       buffer.width0 = size;
 329       buffer.height0 = 1;
 330       buffer.depth0 = 1;
 331       buffer.array_size = 1;
 332
 333       if (st_mem_obj) {
 334          st_obj->buffer = screen->resource_from_memobj(screen, &buffer,
 335                                                        st_mem_obj->memory,
 336                                                        offset);
 337       }
 338       else if (target == GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD) {
 339          st_obj->buffer =
 340             screen->resource_from_user_memory(screen, &buffer, (void*)data);
 341       }
 342       else {
 343          st_obj->buffer = screen->resource_create(screen, &buffer);
 344
 345          if (st_obj->buffer && data)
 346             pipe_buffer_write(pipe, st_obj->buffer, 0, size, data);
 347       }
 348
 349       if (!st_obj->buffer) {
 350          /* out of memory */
 351          st_obj->Base.Size = 0;
 352          return GL_FALSE;
 353       }
 354    }
 355
 356    /* The current buffer may be bound, so we have to revalidate all atoms that
 357     * might be using it.
 358     */
 359    /* TODO: Add arrays to usage history */
 360    ctx->NewDriverState |= ST_NEW_VERTEX_ARRAYS;
 361    if (st_obj->Base.UsageHistory & USAGE_UNIFORM_BUFFER)
 362       ctx->NewDriverState |= ST_NEW_UNIFORM_BUFFER;
 363    if (st_obj->Base.UsageHistory & USAGE_SHADER_STORAGE_BUFFER)
 364       ctx->NewDriverState |= ST_NEW_STORAGE_BUFFER;
 365    if (st_obj->Base.UsageHistory & USAGE_TEXTURE_BUFFER)
 366       ctx->NewDriverState |= ST_NEW_SAMPLER_VIEWS | ST_NEW_IMAGE_UNITS;
 367    if (st_obj->Base.UsageHistory & USAGE_ATOMIC_COUNTER_BUFFER)
 368       ctx->NewDriverState |= ctx->DriverFlags.NewAtomicBuffer;
 369
 370    return GL_TRUE;
 371 }
 372
 373 /**
 374  * Allocate space for and store data in a buffer object.  Any data that was
 375  * previously stored in the buffer object is lost.  If data is NULL,
 376  * memory will be allocated, but no copy will occur.
 377  * Called via ctx->Driver.BufferData().
 378  * \return GL_TRUE for success, GL_FALSE if out of memory
 379  */
 380 static GLboolean
 381 st_bufferobj_data(struct gl_context *ctx,
 382                   GLenum target,
 383                   GLsizeiptrARB size,
 384                   const void *data,
 385                   GLenum usage,
 386                   GLbitfield storageFlags,
 387                   struct gl_buffer_object *obj)
 388 {
 389    return bufferobj_data(ctx, target, size, data, NULL, 0, usage, storageFlags, obj);
 390 }
 391
 392 static GLboolean
 393 st_bufferobj_data_mem(struct gl_context *ctx,
 394                       GLenum target,
 395                       GLsizeiptrARB size,
 396                       struct gl_memory_object *memObj,
 397                       GLuint64 offset,
 398                       GLenum usage,
 399                       struct gl_buffer_object *bufObj)
 400 {
 401    return bufferobj_data(ctx, target, size, NULL, memObj, offset, usage, 0, bufObj);
 402 }
 403
 404 /**
 405  * Called via glInvalidateBuffer(Sub)Data.
 406  */
 407 static void
 408 st_bufferobj_invalidate(struct gl_context *ctx,
 409                         struct gl_buffer_object *obj,
 410                         GLintptr offset,
 411                         GLsizeiptr size)
 412 {
 413    struct st_context *st = st_context(ctx);
 414    struct pipe_context *pipe = st->pipe;
 415    struct st_buffer_object *st_obj = st_buffer_object(obj);
 416
 417    /* We ignore partial invalidates. */
 418    if (offset != 0 || size != obj->Size)
 419       return;
 420
 421    /* Nothing to invalidate. */
 422    if (!st_obj->buffer)
 423       return;
 424
 425    pipe->invalidate_resource(pipe, st_obj->buffer);
 426 }
 427
 428
 429 /**
 430  * Convert GLbitfield of GL_MAP_x flags to gallium pipe_transfer_usage flags.
 431  * \param wholeBuffer  is the whole buffer being mapped?
 432  */
 433 enum pipe_transfer_usage
 434 st_access_flags_to_transfer_flags(GLbitfield access, bool wholeBuffer)
 435 {
 436    enum pipe_transfer_usage flags = 0;
 437
 438    if (access & GL_MAP_WRITE_BIT)
 439       flags |= PIPE_TRANSFER_WRITE;
 440
 441    if (access & GL_MAP_READ_BIT)
 442       flags |= PIPE_TRANSFER_READ;
 443
 444    if (access & GL_MAP_FLUSH_EXPLICIT_BIT)
 445       flags |= PIPE_TRANSFER_FLUSH_EXPLICIT;
 446
 447    if (access & GL_MAP_INVALIDATE_BUFFER_BIT) {
 448       flags |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
 449    }
 450    else if (access & GL_MAP_INVALIDATE_RANGE_BIT) {
 451       if (wholeBuffer)
 452          flags |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
 453       else
 454          flags |= PIPE_TRANSFER_DISCARD_RANGE;
 455    }
 456
 457    if (access & GL_MAP_UNSYNCHRONIZED_BIT)
 458       flags |= PIPE_TRANSFER_UNSYNCHRONIZED;
 459
 460    if (access & GL_MAP_PERSISTENT_BIT)
 461       flags |= PIPE_TRANSFER_PERSISTENT;
 462
 463    if (access & GL_MAP_COHERENT_BIT)
 464       flags |= PIPE_TRANSFER_COHERENT;
 465
 466    /* ... other flags ...
 467    */
 468
 469    if (access & MESA_MAP_NOWAIT_BIT)
 470       flags |= PIPE_TRANSFER_DONTBLOCK;
 471
 472    return flags;
 473 }
 474
 475
 476 /**
 477  * Called via glMapBufferRange().
 478  */
 479 static void *
 480 st_bufferobj_map_range(struct gl_context *ctx,
 481                        GLintptr offset, GLsizeiptr length, GLbitfield access,
 482                        struct gl_buffer_object *obj,
 483                        gl_map_buffer_index index)
 484 {
 485    struct pipe_context *pipe = st_context(ctx)->pipe;
 486    struct st_buffer_object *st_obj = st_buffer_object(obj);
 487
 488    assert(offset >= 0);
 489    assert(length >= 0);
 490    assert(offset < obj->Size);
 491    assert(offset + length <= obj->Size);
 492
 493    const enum pipe_transfer_usage transfer_flags =
 494       st_access_flags_to_transfer_flags(access,
 495                                         offset == 0 && length == obj->Size);
 496
 497    obj->Mappings[index].Pointer = pipe_buffer_map_range(pipe,
 498                                                         st_obj->buffer,
 499                                                         offset, length,
 500                                                         transfer_flags,
 501                                                         &st_obj->transfer[index]);
 502    if (obj->Mappings[index].Pointer) {
 503       obj->Mappings[index].Offset = offset;
 504       obj->Mappings[index].Length = length;
 505       obj->Mappings[index].AccessFlags = access;
 506    }
 507    else {
 508       st_obj->transfer[index] = NULL;
 509    }
 510
 511    return obj->Mappings[index].Pointer;
 512 }
 513
 514
 515 static void
 516 st_bufferobj_flush_mapped_range(struct gl_context *ctx,
 517                                 GLintptr offset, GLsizeiptr length,
 518                                 struct gl_buffer_object *obj,
 519                                 gl_map_buffer_index index)
 520 {
 521    struct pipe_context *pipe = st_context(ctx)->pipe;
 522    struct st_buffer_object *st_obj = st_buffer_object(obj);
 523
 524    /* Subrange is relative to mapped range */
 525    assert(offset >= 0);
 526    assert(length >= 0);
 527    assert(offset + length <= obj->Mappings[index].Length);
 528    assert(obj->Mappings[index].Pointer);
 529
 530    if (!length)
 531       return;
 532
 533    pipe_buffer_flush_mapped_range(pipe, st_obj->transfer[index],
 534                                   obj->Mappings[index].Offset + offset,
 535                                   length);
 536 }
 537
 538
 539 /**
 540  * Called via glUnmapBufferARB().
 541  */
 542 static GLboolean
 543 st_bufferobj_unmap(struct gl_context *ctx, struct gl_buffer_object *obj,
 544                    gl_map_buffer_index index)
 545 {
 546    struct pipe_context *pipe = st_context(ctx)->pipe;
 547    struct st_buffer_object *st_obj = st_buffer_object(obj);
 548
 549    if (obj->Mappings[index].Length)
 550       pipe_buffer_unmap(pipe, st_obj->transfer[index]);
 551
 552    st_obj->transfer[index] = NULL;
 553    obj->Mappings[index].Pointer = NULL;
 554    obj->Mappings[index].Offset = 0;
 555    obj->Mappings[index].Length = 0;
 556    return GL_TRUE;
 557 }
 558
 559
 560 /**
 561  * Called via glCopyBufferSubData().
 562  */
 563 static void
 564 st_copy_buffer_subdata(struct gl_context *ctx,
 565                        struct gl_buffer_object *src,
 566                        struct gl_buffer_object *dst,
 567                        GLintptr readOffset, GLintptr writeOffset,
 568                        GLsizeiptr size)
 569 {
 570    struct pipe_context *pipe = st_context(ctx)->pipe;
 571    struct st_buffer_object *srcObj = st_buffer_object(src);
 572    struct st_buffer_object *dstObj = st_buffer_object(dst);
 573    struct pipe_box box;
 574
 575    if (!size)
 576       return;
 577
 578    /* buffer should not already be mapped */
 579    assert(!_mesa_check_disallowed_mapping(src));
 580    assert(!_mesa_check_disallowed_mapping(dst));
 581
 582    u_box_1d(readOffset, size, &box);
 583
 584    pipe->resource_copy_region(pipe, dstObj->buffer, 0, writeOffset, 0, 0,
 585                               srcObj->buffer, 0, &box);
 586 }
 587
 588 /**
 589  * Called via glClearBufferSubData().
 590  */
 591 static void
 592 st_clear_buffer_subdata(struct gl_context *ctx,
 593                         GLintptr offset, GLsizeiptr size,
 594                         const void *clearValue,
 595                         GLsizeiptr clearValueSize,
 596                         struct gl_buffer_object *bufObj)
 597 {
 598    struct pipe_context *pipe = st_context(ctx)->pipe;
 599    struct st_buffer_object *buf = st_buffer_object(bufObj);
 600    static const char zeros[16] = {0};
 601
 602    if (!pipe->clear_buffer) {
 603       _mesa_ClearBufferSubData_sw(ctx, offset, size,
 604                                   clearValue, clearValueSize, bufObj);
 605       return;
 606    }
 607
 608    if (!clearValue)
 609       clearValue = zeros;
 610
 611    pipe->clear_buffer(pipe, buf->buffer, offset, size,
 612                       clearValue, clearValueSize);
 613 }
 614
 615 static void
 616 st_bufferobj_page_commitment(struct gl_context *ctx,
 617                              struct gl_buffer_object *bufferObj,
 618                              GLintptr offset, GLsizeiptr size,
 619                              GLboolean commit)
 620 {
 621    struct pipe_context *pipe = st_context(ctx)->pipe;
 622    struct st_buffer_object *buf = st_buffer_object(bufferObj);
 623    struct pipe_box box;
 624
 625    u_box_1d(offset, size, &box);
 626
 627    if (!pipe->resource_commit(pipe, buf->buffer, 0, &box, commit)) {
 628       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBufferPageCommitmentARB(out of memory)");
 629       return;
 630    }
 631 }
 632
 633 void
 634 st_init_bufferobject_functions(struct pipe_screen *screen,
 635                                struct dd_function_table *functions)
 636 {
 637    functions->NewBufferObject = st_bufferobj_alloc;
 638    functions->DeleteBuffer = st_bufferobj_free;
 639    functions->BufferData = st_bufferobj_data;
 640    functions->BufferDataMem = st_bufferobj_data_mem;
 641    functions->BufferSubData = st_bufferobj_subdata;
 642    functions->GetBufferSubData = st_bufferobj_get_subdata;
 643    functions->MapBufferRange = st_bufferobj_map_range;
 644    functions->FlushMappedBufferRange = st_bufferobj_flush_mapped_range;
 645    functions->UnmapBuffer = st_bufferobj_unmap;
 646    functions->CopyBufferSubData = st_copy_buffer_subdata;
 647    functions->ClearBufferSubData = st_clear_buffer_subdata;
 648    functions->BufferPageCommitment = st_bufferobj_page_commitment;
 649
 650    if (screen->get_param(screen, PIPE_CAP_INVALIDATE_BUFFER))
 651       functions->InvalidateBufferSubData = st_bufferobj_invalidate;
 652 }