1/************************************************************************** 2 * 3 * Copyright 2003 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#include "main/imports.h" 30#include "main/mtypes.h" 31#include "main/macros.h" 32#include "main/bufferobj.h" 33 34#include "intel_blit.h" 35#include "intel_buffer_objects.h" 36#include "intel_batchbuffer.h" 37#include "intel_context.h" 38#include "intel_fbo.h" 39#include "intel_mipmap_tree.h" 40#include "intel_regions.h" 41 42static GLboolean 43intel_bufferobj_unmap(struct gl_context * ctx, struct gl_buffer_object *obj, 44 gl_map_buffer_index index); 45 46/** Allocates a new drm_intel_bo to store the data for the buffer object. */ 47static void 48intel_bufferobj_alloc_buffer(struct intel_context *intel, 49 struct intel_buffer_object *intel_obj) 50{ 51 intel_obj->buffer = drm_intel_bo_alloc(intel->bufmgr, "bufferobj", 52 intel_obj->Base.Size, 64); 53} 54 55static void 56release_buffer(struct intel_buffer_object *intel_obj) 57{ 58 drm_intel_bo_unreference(intel_obj->buffer); 59 intel_obj->buffer = NULL; 60 intel_obj->offset = 0; 61 intel_obj->source = 0; 62} 63 64/** 65 * There is some duplication between mesa's bufferobjects and our 66 * bufmgr buffers. Both have an integer handle and a hashtable to 67 * lookup an opaque structure. It would be nice if the handles and 68 * internal structure where somehow shared. 69 */ 70static struct gl_buffer_object * 71intel_bufferobj_alloc(struct gl_context * ctx, GLuint name) 72{ 73 struct intel_buffer_object *obj = CALLOC_STRUCT(intel_buffer_object); 74 75 _mesa_initialize_buffer_object(ctx, &obj->Base, name); 76 77 obj->buffer = NULL; 78 79 return &obj->Base; 80} 81 82/** 83 * Deallocate/free a vertex/pixel buffer object. 84 * Called via glDeleteBuffersARB(). 85 */ 86static void 87intel_bufferobj_free(struct gl_context * ctx, struct gl_buffer_object *obj) 88{ 89 struct intel_buffer_object *intel_obj = intel_buffer_object(obj); 90 91 assert(intel_obj); 92 93 /* Buffer objects are automatically unmapped when deleting according 94 * to the spec, but Mesa doesn't do UnmapBuffer for us at context destroy 95 * (though it does if you call glDeleteBuffers) 96 */ 97 _mesa_buffer_unmap_all_mappings(ctx, obj); 98 99 _mesa_align_free(intel_obj->sys_buffer); 100 101 drm_intel_bo_unreference(intel_obj->buffer); 102 _mesa_delete_buffer_object(ctx, obj); 103} 104 105 106 107/** 108 * Allocate space for and store data in a buffer object. Any data that was 109 * previously stored in the buffer object is lost. If data is NULL, 110 * memory will be allocated, but no copy will occur. 111 * Called via ctx->Driver.BufferData(). 112 * \return true for success, false if out of memory 113 */ 114static GLboolean 115intel_bufferobj_data(struct gl_context * ctx, 116 GLenum target, 117 GLsizeiptrARB size, 118 const GLvoid * data, 119 GLenum usage, 120 GLbitfield storageFlags, 121 struct gl_buffer_object *obj) 122{ 123 struct intel_context *intel = intel_context(ctx); 124 struct intel_buffer_object *intel_obj = intel_buffer_object(obj); 125 126 intel_obj->Base.Size = size; 127 intel_obj->Base.Usage = usage; 128 intel_obj->Base.StorageFlags = storageFlags; 129 130 assert(!obj->Mappings[MAP_USER].Pointer); /* Mesa should have unmapped it */ 131 assert(!obj->Mappings[MAP_INTERNAL].Pointer); 132 133 if (intel_obj->buffer != NULL) 134 release_buffer(intel_obj); 135 136 _mesa_align_free(intel_obj->sys_buffer); 137 intel_obj->sys_buffer = NULL; 138 139 if (size != 0) { 140 /* Stick VBOs in system memory, as we're always doing swtnl with their 141 * contents anyway. 142 */ 143 if (target == GL_ARRAY_BUFFER || target == GL_ELEMENT_ARRAY_BUFFER) { 144 intel_obj->sys_buffer = 145 _mesa_align_malloc(size, ctx->Const.MinMapBufferAlignment); 146 if (intel_obj->sys_buffer != NULL) { 147 if (data != NULL) 148 memcpy(intel_obj->sys_buffer, data, size); 149 return true; 150 } 151 } 152 153 intel_bufferobj_alloc_buffer(intel, intel_obj); 154 if (!intel_obj->buffer) 155 return false; 156 157 if (data != NULL) 158 drm_intel_bo_subdata(intel_obj->buffer, 0, size, data); 159 } 160 161 return true; 162} 163 164 165/** 166 * Replace data in a subrange of buffer object. If the data range 167 * specified by size + offset extends beyond the end of the buffer or 168 * if data is NULL, no copy is performed. 169 * Called via glBufferSubDataARB(). 170 */ 171static void 172intel_bufferobj_subdata(struct gl_context * ctx, 173 GLintptrARB offset, 174 GLsizeiptrARB size, 175 const GLvoid * data, struct gl_buffer_object *obj) 176{ 177 struct intel_context *intel = intel_context(ctx); 178 struct intel_buffer_object *intel_obj = intel_buffer_object(obj); 179 bool busy; 180 181 if (size == 0) 182 return; 183 184 assert(intel_obj); 185 186 /* If we have a single copy in system memory, update that */ 187 if (intel_obj->sys_buffer) { 188 if (intel_obj->source) 189 release_buffer(intel_obj); 190 191 if (intel_obj->buffer == NULL) { 192 memcpy((char *)intel_obj->sys_buffer + offset, data, size); 193 return; 194 } 195 196 _mesa_align_free(intel_obj->sys_buffer); 197 intel_obj->sys_buffer = NULL; 198 } 199 200 /* Otherwise we need to update the copy in video memory. */ 201 busy = 202 drm_intel_bo_busy(intel_obj->buffer) || 203 drm_intel_bo_references(intel->batch.bo, intel_obj->buffer); 204 205 if (busy) { 206 if (size == intel_obj->Base.Size) { 207 /* Replace the current busy bo with fresh data. */ 208 drm_intel_bo_unreference(intel_obj->buffer); 209 intel_bufferobj_alloc_buffer(intel, intel_obj); 210 drm_intel_bo_subdata(intel_obj->buffer, 0, size, data); 211 } else { 212 perf_debug("Using a blit copy to avoid stalling on %ldb " 213 "glBufferSubData() to a busy buffer object.\n", 214 (long)size); 215 drm_intel_bo *temp_bo = 216 drm_intel_bo_alloc(intel->bufmgr, "subdata temp", size, 64); 217 218 drm_intel_bo_subdata(temp_bo, 0, size, data); 219 220 intel_emit_linear_blit(intel, 221 intel_obj->buffer, offset, 222 temp_bo, 0, 223 size); 224 225 drm_intel_bo_unreference(temp_bo); 226 } 227 } else { 228 drm_intel_bo_subdata(intel_obj->buffer, offset, size, data); 229 } 230} 231 232 233/** 234 * Called via glGetBufferSubDataARB(). 235 */ 236static void 237intel_bufferobj_get_subdata(struct gl_context * ctx, 238 GLintptrARB offset, 239 GLsizeiptrARB size, 240 GLvoid * data, struct gl_buffer_object *obj) 241{ 242 struct intel_buffer_object *intel_obj = intel_buffer_object(obj); 243 struct intel_context *intel = intel_context(ctx); 244 245 assert(intel_obj); 246 if (intel_obj->sys_buffer) 247 memcpy(data, (char *)intel_obj->sys_buffer + offset, size); 248 else { 249 if (drm_intel_bo_references(intel->batch.bo, intel_obj->buffer)) { 250 intel_batchbuffer_flush(intel); 251 } 252 drm_intel_bo_get_subdata(intel_obj->buffer, offset, size, data); 253 } 254} 255 256 257 258/** 259 * Called via glMapBufferRange and glMapBuffer 260 * 261 * The goal of this extension is to allow apps to accumulate their rendering 262 * at the same time as they accumulate their buffer object. Without it, 263 * you'd end up blocking on execution of rendering every time you mapped 264 * the buffer to put new data in. 265 * 266 * We support it in 3 ways: If unsynchronized, then don't bother 267 * flushing the batchbuffer before mapping the buffer, which can save blocking 268 * in many cases. If we would still block, and they allow the whole buffer 269 * to be invalidated, then just allocate a new buffer to replace the old one. 270 * If not, and we'd block, and they allow the subrange of the buffer to be 271 * invalidated, then we can make a new little BO, let them write into that, 272 * and blit it into the real BO at unmap time. 273 */ 274static void * 275intel_bufferobj_map_range(struct gl_context * ctx, 276 GLintptr offset, GLsizeiptr length, 277 GLbitfield access, struct gl_buffer_object *obj, 278 gl_map_buffer_index index) 279{ 280 struct intel_context *intel = intel_context(ctx); 281 struct intel_buffer_object *intel_obj = intel_buffer_object(obj); 282 283 assert(intel_obj); 284 285 /* _mesa_MapBufferRange (GL entrypoint) sets these, but the vbo module also 286 * internally uses our functions directly. 287 */ 288 obj->Mappings[index].Offset = offset; 289 obj->Mappings[index].Length = length; 290 obj->Mappings[index].AccessFlags = access; 291 292 if (intel_obj->sys_buffer) { 293 const bool read_only = 294 (access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == GL_MAP_READ_BIT; 295 296 if (!read_only && intel_obj->source) 297 release_buffer(intel_obj); 298 299 if (!intel_obj->buffer || intel_obj->source) { 300 obj->Mappings[index].Pointer = intel_obj->sys_buffer + offset; 301 return obj->Mappings[index].Pointer; 302 } 303 304 _mesa_align_free(intel_obj->sys_buffer); 305 intel_obj->sys_buffer = NULL; 306 } 307 308 if (intel_obj->buffer == NULL) { 309 obj->Mappings[index].Pointer = NULL; 310 return NULL; 311 } 312 313 /* If the access is synchronized (like a normal buffer mapping), then get 314 * things flushed out so the later mapping syncs appropriately through GEM. 315 * If the user doesn't care about existing buffer contents and mapping would 316 * cause us to block, then throw out the old buffer. 317 * 318 * If they set INVALIDATE_BUFFER, we can pitch the current contents to 319 * achieve the required synchronization. 320 */ 321 if (!(access & GL_MAP_UNSYNCHRONIZED_BIT)) { 322 if (drm_intel_bo_references(intel->batch.bo, intel_obj->buffer)) { 323 if (access & GL_MAP_INVALIDATE_BUFFER_BIT) { 324 drm_intel_bo_unreference(intel_obj->buffer); 325 intel_bufferobj_alloc_buffer(intel, intel_obj); 326 } else { 327 perf_debug("Stalling on the GPU for mapping a busy buffer " 328 "object\n"); 329 intel_flush(ctx); 330 } 331 } else if (drm_intel_bo_busy(intel_obj->buffer) && 332 (access & GL_MAP_INVALIDATE_BUFFER_BIT)) { 333 drm_intel_bo_unreference(intel_obj->buffer); 334 intel_bufferobj_alloc_buffer(intel, intel_obj); 335 } 336 } 337 338 /* If the user is mapping a range of an active buffer object but 339 * doesn't require the current contents of that range, make a new 340 * BO, and we'll copy what they put in there out at unmap or 341 * FlushRange time. 342 */ 343 if ((access & GL_MAP_INVALIDATE_RANGE_BIT) && 344 drm_intel_bo_busy(intel_obj->buffer)) { 345 /* Ensure that the base alignment of the allocation meets the alignment 346 * guarantees the driver has advertised to the application. 347 */ 348 const unsigned alignment = ctx->Const.MinMapBufferAlignment; 349 const unsigned extra = (uintptr_t) offset % alignment; 350 351 if (access & GL_MAP_FLUSH_EXPLICIT_BIT) { 352 intel_obj->range_map_buffer[index] = 353 _mesa_align_malloc(length + extra, alignment); 354 obj->Mappings[index].Pointer = 355 intel_obj->range_map_buffer[index] + extra; 356 } else { 357 intel_obj->range_map_bo[index] = drm_intel_bo_alloc(intel->bufmgr, 358 "range map", 359 length + extra, 360 alignment); 361 if (!(access & GL_MAP_READ_BIT)) { 362 drm_intel_gem_bo_map_gtt(intel_obj->range_map_bo[index]); 363 } else { 364 drm_intel_bo_map(intel_obj->range_map_bo[index], 365 (access & GL_MAP_WRITE_BIT) != 0); 366 } 367 obj->Mappings[index].Pointer = 368 intel_obj->range_map_bo[index]->virtual + extra; 369 } 370 return obj->Mappings[index].Pointer; 371 } 372 373 if (access & GL_MAP_UNSYNCHRONIZED_BIT) 374 drm_intel_gem_bo_map_unsynchronized(intel_obj->buffer); 375 else if (!(access & GL_MAP_READ_BIT)) { 376 drm_intel_gem_bo_map_gtt(intel_obj->buffer); 377 } else { 378 drm_intel_bo_map(intel_obj->buffer, (access & GL_MAP_WRITE_BIT) != 0); 379 } 380 381 obj->Mappings[index].Pointer = intel_obj->buffer->virtual + offset; 382 return obj->Mappings[index].Pointer; 383} 384 385/* Ideally we'd use a BO to avoid taking up cache space for the temporary 386 * data, but FlushMappedBufferRange may be followed by further writes to 387 * the pointer, so we would have to re-map after emitting our blit, which 388 * would defeat the point. 389 */ 390static void 391intel_bufferobj_flush_mapped_range(struct gl_context *ctx, 392 GLintptr offset, GLsizeiptr length, 393 struct gl_buffer_object *obj, 394 gl_map_buffer_index index) 395{ 396 struct intel_context *intel = intel_context(ctx); 397 struct intel_buffer_object *intel_obj = intel_buffer_object(obj); 398 drm_intel_bo *temp_bo; 399 400 /* Unless we're in the range map using a temporary system buffer, 401 * there's no work to do. 402 */ 403 if (intel_obj->range_map_buffer[index] == NULL) 404 return; 405 406 if (length == 0) 407 return; 408 409 temp_bo = drm_intel_bo_alloc(intel->bufmgr, "range map flush", length, 64); 410 411 /* Use obj->Pointer instead of intel_obj->range_map_buffer because the 412 * former points to the actual mapping while the latter may be offset to 413 * meet alignment guarantees. 414 */ 415 drm_intel_bo_subdata(temp_bo, 0, length, obj->Mappings[index].Pointer); 416 417 intel_emit_linear_blit(intel, 418 intel_obj->buffer, 419 obj->Mappings[index].Offset + offset, 420 temp_bo, 0, 421 length); 422 423 drm_intel_bo_unreference(temp_bo); 424} 425 426 427/** 428 * Called via glUnmapBuffer(). 429 */ 430static GLboolean 431intel_bufferobj_unmap(struct gl_context * ctx, struct gl_buffer_object *obj, 432 gl_map_buffer_index index) 433{ 434 struct intel_context *intel = intel_context(ctx); 435 struct intel_buffer_object *intel_obj = intel_buffer_object(obj); 436 437 assert(intel_obj); 438 assert(obj->Mappings[index].Pointer); 439 if (intel_obj->sys_buffer != NULL) { 440 /* always keep the mapping around. */ 441 } else if (intel_obj->range_map_buffer[index] != NULL) { 442 /* Since we've emitted some blits to buffers that will (likely) be used 443 * in rendering operations in other cache domains in this batch, emit a 444 * flush. Once again, we wish for a domain tracker in libdrm to cover 445 * usage inside of a batchbuffer. 446 */ 447 intel_batchbuffer_emit_mi_flush(intel); 448 _mesa_align_free(intel_obj->range_map_buffer[index]); 449 intel_obj->range_map_buffer[index] = NULL; 450 } else if (intel_obj->range_map_bo[index] != NULL) { 451 const unsigned extra = obj->Mappings[index].Pointer - 452 intel_obj->range_map_bo[index]->virtual; 453 454 drm_intel_bo_unmap(intel_obj->range_map_bo[index]); 455 456 intel_emit_linear_blit(intel, 457 intel_obj->buffer, obj->Mappings[index].Offset, 458 intel_obj->range_map_bo[index], extra, 459 obj->Mappings[index].Length); 460 461 /* Since we've emitted some blits to buffers that will (likely) be used 462 * in rendering operations in other cache domains in this batch, emit a 463 * flush. Once again, we wish for a domain tracker in libdrm to cover 464 * usage inside of a batchbuffer. 465 */ 466 intel_batchbuffer_emit_mi_flush(intel); 467 468 drm_intel_bo_unreference(intel_obj->range_map_bo[index]); 469 intel_obj->range_map_bo[index] = NULL; 470 } else if (intel_obj->buffer != NULL) { 471 drm_intel_bo_unmap(intel_obj->buffer); 472 } 473 obj->Mappings[index].Pointer = NULL; 474 obj->Mappings[index].Offset = 0; 475 obj->Mappings[index].Length = 0; 476 477 return true; 478} 479 480drm_intel_bo * 481intel_bufferobj_buffer(struct intel_context *intel, 482 struct intel_buffer_object *intel_obj) 483{ 484 if (intel_obj->source) 485 release_buffer(intel_obj); 486 487 if (intel_obj->buffer == NULL) { 488 intel_bufferobj_alloc_buffer(intel, intel_obj); 489 drm_intel_bo_subdata(intel_obj->buffer, 490 0, intel_obj->Base.Size, 491 intel_obj->sys_buffer); 492 493 _mesa_align_free(intel_obj->sys_buffer); 494 intel_obj->sys_buffer = NULL; 495 intel_obj->offset = 0; 496 } 497 498 return intel_obj->buffer; 499} 500 501#define INTEL_UPLOAD_SIZE (64*1024) 502 503void 504intel_upload_finish(struct intel_context *intel) 505{ 506 if (!intel->upload.bo) 507 return; 508 509 if (intel->upload.buffer_len) { 510 drm_intel_bo_subdata(intel->upload.bo, 511 intel->upload.buffer_offset, 512 intel->upload.buffer_len, 513 intel->upload.buffer); 514 intel->upload.buffer_len = 0; 515 } 516 517 drm_intel_bo_unreference(intel->upload.bo); 518 intel->upload.bo = NULL; 519} 520 521static void wrap_buffers(struct intel_context *intel, GLuint size) 522{ 523 intel_upload_finish(intel); 524 525 if (size < INTEL_UPLOAD_SIZE) 526 size = INTEL_UPLOAD_SIZE; 527 528 intel->upload.bo = drm_intel_bo_alloc(intel->bufmgr, "upload", size, 0); 529 intel->upload.offset = 0; 530} 531 532void intel_upload_data(struct intel_context *intel, 533 const void *ptr, GLuint size, GLuint align, 534 drm_intel_bo **return_bo, 535 GLuint *return_offset) 536{ 537 GLuint base, delta; 538 539 base = (intel->upload.offset + align - 1) / align * align; 540 if (intel->upload.bo == NULL || base + size > intel->upload.bo->size) { 541 wrap_buffers(intel, size); 542 base = 0; 543 } 544 545 drm_intel_bo_reference(intel->upload.bo); 546 *return_bo = intel->upload.bo; 547 *return_offset = base; 548 549 delta = base - intel->upload.offset; 550 if (intel->upload.buffer_len && 551 intel->upload.buffer_len + delta + size > sizeof(intel->upload.buffer)) 552 { 553 drm_intel_bo_subdata(intel->upload.bo, 554 intel->upload.buffer_offset, 555 intel->upload.buffer_len, 556 intel->upload.buffer); 557 intel->upload.buffer_len = 0; 558 } 559 560 if (size < sizeof(intel->upload.buffer)) 561 { 562 if (intel->upload.buffer_len == 0) 563 intel->upload.buffer_offset = base; 564 else 565 intel->upload.buffer_len += delta; 566 567 memcpy(intel->upload.buffer + intel->upload.buffer_len, ptr, size); 568 intel->upload.buffer_len += size; 569 } 570 else 571 { 572 drm_intel_bo_subdata(intel->upload.bo, base, size, ptr); 573 } 574 575 intel->upload.offset = base + size; 576} 577 578drm_intel_bo * 579intel_bufferobj_source(struct intel_context *intel, 580 struct intel_buffer_object *intel_obj, 581 GLuint align, GLuint *offset) 582{ 583 if (intel_obj->buffer == NULL) { 584 intel_upload_data(intel, 585 intel_obj->sys_buffer, intel_obj->Base.Size, align, 586 &intel_obj->buffer, &intel_obj->offset); 587 intel_obj->source = 1; 588 } 589 590 *offset = intel_obj->offset; 591 return intel_obj->buffer; 592} 593 594static void 595intel_bufferobj_copy_subdata(struct gl_context *ctx, 596 struct gl_buffer_object *src, 597 struct gl_buffer_object *dst, 598 GLintptr read_offset, GLintptr write_offset, 599 GLsizeiptr size) 600{ 601 struct intel_context *intel = intel_context(ctx); 602 struct intel_buffer_object *intel_src = intel_buffer_object(src); 603 struct intel_buffer_object *intel_dst = intel_buffer_object(dst); 604 drm_intel_bo *src_bo, *dst_bo; 605 GLuint src_offset; 606 607 if (size == 0) 608 return; 609 610 /* If we're in system memory, just map and memcpy. */ 611 if (intel_src->sys_buffer || intel_dst->sys_buffer) { 612 /* The same buffer may be used, but note that regions copied may 613 * not overlap. 614 */ 615 if (src == dst) { 616 char *ptr = intel_bufferobj_map_range(ctx, 0, dst->Size, 617 GL_MAP_READ_BIT | 618 GL_MAP_WRITE_BIT, 619 dst, MAP_INTERNAL); 620 memmove(ptr + write_offset, ptr + read_offset, size); 621 intel_bufferobj_unmap(ctx, dst, MAP_INTERNAL); 622 } else { 623 const char *src_ptr; 624 char *dst_ptr; 625 626 src_ptr = intel_bufferobj_map_range(ctx, 0, src->Size, 627 GL_MAP_READ_BIT, src, 628 MAP_INTERNAL); 629 dst_ptr = intel_bufferobj_map_range(ctx, 0, dst->Size, 630 GL_MAP_WRITE_BIT, dst, 631 MAP_INTERNAL); 632 633 memcpy(dst_ptr + write_offset, src_ptr + read_offset, size); 634 635 intel_bufferobj_unmap(ctx, src, MAP_INTERNAL); 636 intel_bufferobj_unmap(ctx, dst, MAP_INTERNAL); 637 } 638 return; 639 } 640 641 /* Otherwise, we have real BOs, so blit them. */ 642 643 dst_bo = intel_bufferobj_buffer(intel, intel_dst); 644 src_bo = intel_bufferobj_source(intel, intel_src, 64, &src_offset); 645 646 intel_emit_linear_blit(intel, 647 dst_bo, write_offset, 648 src_bo, read_offset + src_offset, size); 649 650 /* Since we've emitted some blits to buffers that will (likely) be used 651 * in rendering operations in other cache domains in this batch, emit a 652 * flush. Once again, we wish for a domain tracker in libdrm to cover 653 * usage inside of a batchbuffer. 654 */ 655 intel_batchbuffer_emit_mi_flush(intel); 656} 657 658static GLenum 659intel_buffer_purgeable(drm_intel_bo *buffer) 660{ 661 int retained = 0; 662 663 if (buffer != NULL) 664 retained = drm_intel_bo_madvise (buffer, I915_MADV_DONTNEED); 665 666 return retained ? GL_VOLATILE_APPLE : GL_RELEASED_APPLE; 667} 668 669static GLenum 670intel_buffer_object_purgeable(struct gl_context * ctx, 671 struct gl_buffer_object *obj, 672 GLenum option) 673{ 674 struct intel_buffer_object *intel_obj = intel_buffer_object (obj); 675 676 if (intel_obj->buffer != NULL) 677 return intel_buffer_purgeable(intel_obj->buffer); 678 679 if (option == GL_RELEASED_APPLE) { 680 _mesa_align_free(intel_obj->sys_buffer); 681 intel_obj->sys_buffer = NULL; 682 683 return GL_RELEASED_APPLE; 684 } else { 685 /* XXX Create the buffer and madvise(MADV_DONTNEED)? */ 686 struct intel_context *intel = intel_context(ctx); 687 drm_intel_bo *bo = intel_bufferobj_buffer(intel, intel_obj); 688 689 return intel_buffer_purgeable(bo); 690 } 691} 692 693static GLenum 694intel_texture_object_purgeable(struct gl_context * ctx, 695 struct gl_texture_object *obj, 696 GLenum option) 697{ 698 struct intel_texture_object *intel; 699 700 (void) ctx; 701 (void) option; 702 703 intel = intel_texture_object(obj); 704 if (intel->mt == NULL || intel->mt->region == NULL) 705 return GL_RELEASED_APPLE; 706 707 return intel_buffer_purgeable(intel->mt->region->bo); 708} 709 710static GLenum 711intel_render_object_purgeable(struct gl_context * ctx, 712 struct gl_renderbuffer *obj, 713 GLenum option) 714{ 715 struct intel_renderbuffer *intel; 716 717 (void) ctx; 718 (void) option; 719 720 intel = intel_renderbuffer(obj); 721 if (intel->mt == NULL) 722 return GL_RELEASED_APPLE; 723 724 return intel_buffer_purgeable(intel->mt->region->bo); 725} 726 727static GLenum 728intel_buffer_unpurgeable(drm_intel_bo *buffer) 729{ 730 int retained; 731 732 retained = 0; 733 if (buffer != NULL) 734 retained = drm_intel_bo_madvise (buffer, I915_MADV_WILLNEED); 735 736 return retained ? GL_RETAINED_APPLE : GL_UNDEFINED_APPLE; 737} 738 739static GLenum 740intel_buffer_object_unpurgeable(struct gl_context * ctx, 741 struct gl_buffer_object *obj, 742 GLenum option) 743{ 744 (void) ctx; 745 (void) option; 746 747 return intel_buffer_unpurgeable(intel_buffer_object (obj)->buffer); 748} 749 750static GLenum 751intel_texture_object_unpurgeable(struct gl_context * ctx, 752 struct gl_texture_object *obj, 753 GLenum option) 754{ 755 struct intel_texture_object *intel; 756 757 (void) ctx; 758 (void) option; 759 760 intel = intel_texture_object(obj); 761 if (intel->mt == NULL || intel->mt->region == NULL) 762 return GL_UNDEFINED_APPLE; 763 764 return intel_buffer_unpurgeable(intel->mt->region->bo); 765} 766 767static GLenum 768intel_render_object_unpurgeable(struct gl_context * ctx, 769 struct gl_renderbuffer *obj, 770 GLenum option) 771{ 772 struct intel_renderbuffer *intel; 773 774 (void) ctx; 775 (void) option; 776 777 intel = intel_renderbuffer(obj); 778 if (intel->mt == NULL) 779 return GL_UNDEFINED_APPLE; 780 781 return intel_buffer_unpurgeable(intel->mt->region->bo); 782} 783 784void 785intelInitBufferObjectFuncs(struct dd_function_table *functions) 786{ 787 functions->NewBufferObject = intel_bufferobj_alloc; 788 functions->DeleteBuffer = intel_bufferobj_free; 789 functions->BufferData = intel_bufferobj_data; 790 functions->BufferSubData = intel_bufferobj_subdata; 791 functions->GetBufferSubData = intel_bufferobj_get_subdata; 792 functions->MapBufferRange = intel_bufferobj_map_range; 793 functions->FlushMappedBufferRange = intel_bufferobj_flush_mapped_range; 794 functions->UnmapBuffer = intel_bufferobj_unmap; 795 functions->CopyBufferSubData = intel_bufferobj_copy_subdata; 796 797 functions->BufferObjectPurgeable = intel_buffer_object_purgeable; 798 functions->TextureObjectPurgeable = intel_texture_object_purgeable; 799 functions->RenderObjectPurgeable = intel_render_object_purgeable; 800 801 functions->BufferObjectUnpurgeable = intel_buffer_object_unpurgeable; 802 functions->TextureObjectUnpurgeable = intel_texture_object_unpurgeable; 803 functions->RenderObjectUnpurgeable = intel_render_object_unpurgeable; 804} 805