src/gallium/drivers/identity/id_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 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 "pipe/p_context.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_inlines.h"
  32
  33 #include "id_context.h"
  34 #include "id_objects.h"
  35
  36
  37 static void
  38 identity_destroy(struct pipe_context *_pipe)
  39 {
  40    struct identity_context *id_pipe = identity_context(_pipe);
  41    struct pipe_context *pipe = id_pipe->pipe;
  42
  43    pipe->destroy(pipe);
  44
  45    FREE(id_pipe);
  46 }
  47
  48 static void
  49 identity_draw_arrays(struct pipe_context *_pipe,
  50                      unsigned prim,
  51                      unsigned start,
  52                      unsigned count)
  53 {
  54    struct identity_context *id_pipe = identity_context(_pipe);
  55    struct pipe_context *pipe = id_pipe->pipe;
  56
  57    pipe->draw_arrays(pipe,
  58                      prim,
  59                      start,
  60                      count);
  61 }
  62
  63 static void
  64 identity_draw_elements(struct pipe_context *_pipe,
  65                        struct pipe_resource *_indexResource,
  66                        unsigned indexSize,
  67                        int indexBias,
  68                        unsigned prim,
  69                        unsigned start,
  70                        unsigned count)
  71 {
  72    struct identity_context *id_pipe = identity_context(_pipe);
  73    struct identity_resource *id_resource = identity_resource(_indexResource);
  74    struct pipe_context *pipe = id_pipe->pipe;
  75    struct pipe_resource *indexResource = id_resource->resource;
  76
  77    pipe->draw_elements(pipe,
  78                        indexResource,
  79                        indexSize,
  80                        indexBias,
  81                        prim,
  82                        start,
  83                        count);
  84 }
  85
  86 static void
  87 identity_draw_range_elements(struct pipe_context *_pipe,
  88                              struct pipe_resource *_indexResource,
  89                              unsigned indexSize,
  90                              int indexBias,
  91                              unsigned minIndex,
  92                              unsigned maxIndex,
  93                              unsigned mode,
  94                              unsigned start,
  95                              unsigned count)
  96 {
  97    struct identity_context *id_pipe = identity_context(_pipe);
  98    struct identity_resource *id_resource = identity_resource(_indexResource);
  99    struct pipe_context *pipe = id_pipe->pipe;
 100    struct pipe_resource *indexResource = id_resource->resource;
 101
 102    pipe->draw_range_elements(pipe,
 103                              indexResource,
 104                              indexSize,
 105                              indexBias,
 106                              minIndex,
 107                              maxIndex,
 108                              mode,
 109                              start,
 110                              count);
 111 }
 112
 113 static struct pipe_query *
 114 identity_create_query(struct pipe_context *_pipe,
 115                       unsigned query_type)
 116 {
 117    struct identity_context *id_pipe = identity_context(_pipe);
 118    struct pipe_context *pipe = id_pipe->pipe;
 119
 120    return pipe->create_query(pipe,
 121                              query_type);
 122 }
 123
 124 static void
 125 identity_destroy_query(struct pipe_context *_pipe,
 126                        struct pipe_query *query)
 127 {
 128    struct identity_context *id_pipe = identity_context(_pipe);
 129    struct pipe_context *pipe = id_pipe->pipe;
 130
 131    pipe->destroy_query(pipe,
 132                        query);
 133 }
 134
 135 static void
 136 identity_begin_query(struct pipe_context *_pipe,
 137                      struct pipe_query *query)
 138 {
 139    struct identity_context *id_pipe = identity_context(_pipe);
 140    struct pipe_context *pipe = id_pipe->pipe;
 141
 142    pipe->begin_query(pipe,
 143                      query);
 144 }
 145
 146 static void
 147 identity_end_query(struct pipe_context *_pipe,
 148                    struct pipe_query *query)
 149 {
 150    struct identity_context *id_pipe = identity_context(_pipe);
 151    struct pipe_context *pipe = id_pipe->pipe;
 152
 153    pipe->end_query(pipe,
 154                    query);
 155 }
 156
 157 static boolean
 158 identity_get_query_result(struct pipe_context *_pipe,
 159                           struct pipe_query *query,
 160                           boolean wait,
 161                           uint64_t *result)
 162 {
 163    struct identity_context *id_pipe = identity_context(_pipe);
 164    struct pipe_context *pipe = id_pipe->pipe;
 165
 166    return pipe->get_query_result(pipe,
 167                                  query,
 168                                  wait,
 169                                  result);
 170 }
 171
 172 static void *
 173 identity_create_blend_state(struct pipe_context *_pipe,
 174                             const struct pipe_blend_state *blend)
 175 {
 176    struct identity_context *id_pipe = identity_context(_pipe);
 177    struct pipe_context *pipe = id_pipe->pipe;
 178
 179    return pipe->create_blend_state(pipe,
 180                                    blend);
 181 }
 182
 183 static void
 184 identity_bind_blend_state(struct pipe_context *_pipe,
 185                           void *blend)
 186 {
 187    struct identity_context *id_pipe = identity_context(_pipe);
 188    struct pipe_context *pipe = id_pipe->pipe;
 189
 190    pipe->bind_blend_state(pipe,
 191                               blend);
 192 }
 193
 194 static void
 195 identity_delete_blend_state(struct pipe_context *_pipe,
 196                             void *blend)
 197 {
 198    struct identity_context *id_pipe = identity_context(_pipe);
 199    struct pipe_context *pipe = id_pipe->pipe;
 200
 201    pipe->delete_blend_state(pipe,
 202                             blend);
 203 }
 204
 205 static void *
 206 identity_create_sampler_state(struct pipe_context *_pipe,
 207                               const struct pipe_sampler_state *sampler)
 208 {
 209    struct identity_context *id_pipe = identity_context(_pipe);
 210    struct pipe_context *pipe = id_pipe->pipe;
 211
 212    return pipe->create_sampler_state(pipe,
 213                                      sampler);
 214 }
 215
 216 static void
 217 identity_bind_fragment_sampler_states(struct pipe_context *_pipe,
 218                                       unsigned num_samplers,
 219                                       void **samplers)
 220 {
 221    struct identity_context *id_pipe = identity_context(_pipe);
 222    struct pipe_context *pipe = id_pipe->pipe;
 223
 224    pipe->bind_fragment_sampler_states(pipe,
 225                                       num_samplers,
 226                                       samplers);
 227 }
 228
 229 static void
 230 identity_bind_vertex_sampler_states(struct pipe_context *_pipe,
 231                                     unsigned num_samplers,
 232                                     void **samplers)
 233 {
 234    struct identity_context *id_pipe = identity_context(_pipe);
 235    struct pipe_context *pipe = id_pipe->pipe;
 236
 237    pipe->bind_vertex_sampler_states(pipe,
 238                                     num_samplers,
 239                                     samplers);
 240 }
 241
 242 static void
 243 identity_delete_sampler_state(struct pipe_context *_pipe,
 244                               void *sampler)
 245 {
 246    struct identity_context *id_pipe = identity_context(_pipe);
 247    struct pipe_context *pipe = id_pipe->pipe;
 248
 249    pipe->delete_sampler_state(pipe,
 250                               sampler);
 251 }
 252
 253 static void *
 254 identity_create_rasterizer_state(struct pipe_context *_pipe,
 255                                  const struct pipe_rasterizer_state *rasterizer)
 256 {
 257    struct identity_context *id_pipe = identity_context(_pipe);
 258    struct pipe_context *pipe = id_pipe->pipe;
 259
 260    return pipe->create_rasterizer_state(pipe,
 261                                         rasterizer);
 262 }
 263
 264 static void
 265 identity_bind_rasterizer_state(struct pipe_context *_pipe,
 266                                void *rasterizer)
 267 {
 268    struct identity_context *id_pipe = identity_context(_pipe);
 269    struct pipe_context *pipe = id_pipe->pipe;
 270
 271    pipe->bind_rasterizer_state(pipe,
 272                                rasterizer);
 273 }
 274
 275 static void
 276 identity_delete_rasterizer_state(struct pipe_context *_pipe,
 277                                  void *rasterizer)
 278 {
 279    struct identity_context *id_pipe = identity_context(_pipe);
 280    struct pipe_context *pipe = id_pipe->pipe;
 281
 282    pipe->delete_rasterizer_state(pipe,
 283                                  rasterizer);
 284 }
 285
 286 static void *
 287 identity_create_depth_stencil_alpha_state(struct pipe_context *_pipe,
 288                                           const struct pipe_depth_stencil_alpha_state *depth_stencil_alpha)
 289 {
 290    struct identity_context *id_pipe = identity_context(_pipe);
 291    struct pipe_context *pipe = id_pipe->pipe;
 292
 293    return pipe->create_depth_stencil_alpha_state(pipe,
 294                                                  depth_stencil_alpha);
 295 }
 296
 297 static void
 298 identity_bind_depth_stencil_alpha_state(struct pipe_context *_pipe,
 299                                         void *depth_stencil_alpha)
 300 {
 301    struct identity_context *id_pipe = identity_context(_pipe);
 302    struct pipe_context *pipe = id_pipe->pipe;
 303
 304    pipe->bind_depth_stencil_alpha_state(pipe,
 305                                         depth_stencil_alpha);
 306 }
 307
 308 static void
 309 identity_delete_depth_stencil_alpha_state(struct pipe_context *_pipe,
 310                                           void *depth_stencil_alpha)
 311 {
 312    struct identity_context *id_pipe = identity_context(_pipe);
 313    struct pipe_context *pipe = id_pipe->pipe;
 314
 315    pipe->delete_depth_stencil_alpha_state(pipe,
 316                                           depth_stencil_alpha);
 317 }
 318
 319 static void *
 320 identity_create_fs_state(struct pipe_context *_pipe,
 321                          const struct pipe_shader_state *fs)
 322 {
 323    struct identity_context *id_pipe = identity_context(_pipe);
 324    struct pipe_context *pipe = id_pipe->pipe;
 325
 326    return pipe->create_fs_state(pipe,
 327                                 fs);
 328 }
 329
 330 static void
 331 identity_bind_fs_state(struct pipe_context *_pipe,
 332                        void *fs)
 333 {
 334    struct identity_context *id_pipe = identity_context(_pipe);
 335    struct pipe_context *pipe = id_pipe->pipe;
 336
 337    pipe->bind_fs_state(pipe,
 338                        fs);
 339 }
 340
 341 static void
 342 identity_delete_fs_state(struct pipe_context *_pipe,
 343                          void *fs)
 344 {
 345    struct identity_context *id_pipe = identity_context(_pipe);
 346    struct pipe_context *pipe = id_pipe->pipe;
 347
 348    pipe->delete_fs_state(pipe,
 349                          fs);
 350 }
 351
 352 static void *
 353 identity_create_vs_state(struct pipe_context *_pipe,
 354                          const struct pipe_shader_state *vs)
 355 {
 356    struct identity_context *id_pipe = identity_context(_pipe);
 357    struct pipe_context *pipe = id_pipe->pipe;
 358
 359    return pipe->create_vs_state(pipe,
 360                                 vs);
 361 }
 362
 363 static void
 364 identity_bind_vs_state(struct pipe_context *_pipe,
 365                        void *vs)
 366 {
 367    struct identity_context *id_pipe = identity_context(_pipe);
 368    struct pipe_context *pipe = id_pipe->pipe;
 369
 370    pipe->bind_vs_state(pipe,
 371                        vs);
 372 }
 373
 374 static void
 375 identity_delete_vs_state(struct pipe_context *_pipe,
 376                          void *vs)
 377 {
 378    struct identity_context *id_pipe = identity_context(_pipe);
 379    struct pipe_context *pipe = id_pipe->pipe;
 380
 381    pipe->delete_vs_state(pipe,
 382                          vs);
 383 }
 384
 385
 386 static void *
 387 identity_create_vertex_elements_state(struct pipe_context *_pipe,
 388                                       unsigned num_elements,
 389                                       const struct pipe_vertex_element *vertex_elements)
 390 {
 391    struct identity_context *id_pipe = identity_context(_pipe);
 392    struct pipe_context *pipe = id_pipe->pipe;
 393
 394    return pipe->create_vertex_elements_state(pipe,
 395                                              num_elements,
 396                                              vertex_elements);
 397 }
 398
 399 static void
 400 identity_bind_vertex_elements_state(struct pipe_context *_pipe,
 401                                     void *velems)
 402 {
 403    struct identity_context *id_pipe = identity_context(_pipe);
 404    struct pipe_context *pipe = id_pipe->pipe;
 405
 406    pipe->bind_vertex_elements_state(pipe,
 407                                     velems);
 408 }
 409
 410 static void
 411 identity_delete_vertex_elements_state(struct pipe_context *_pipe,
 412                                       void *velems)
 413 {
 414    struct identity_context *id_pipe = identity_context(_pipe);
 415    struct pipe_context *pipe = id_pipe->pipe;
 416
 417    pipe->delete_vertex_elements_state(pipe,
 418                                       velems);
 419 }
 420
 421 static void
 422 identity_set_blend_color(struct pipe_context *_pipe,
 423                          const struct pipe_blend_color *blend_color)
 424 {
 425    struct identity_context *id_pipe = identity_context(_pipe);
 426    struct pipe_context *pipe = id_pipe->pipe;
 427
 428    pipe->set_blend_color(pipe,
 429                          blend_color);
 430 }
 431
 432 static void
 433 identity_set_stencil_ref(struct pipe_context *_pipe,
 434                          const struct pipe_stencil_ref *stencil_ref)
 435 {
 436    struct identity_context *id_pipe = identity_context(_pipe);
 437    struct pipe_context *pipe = id_pipe->pipe;
 438
 439    pipe->set_stencil_ref(pipe,
 440                          stencil_ref);
 441 }
 442
 443 static void
 444 identity_set_clip_state(struct pipe_context *_pipe,
 445                         const struct pipe_clip_state *clip)
 446 {
 447    struct identity_context *id_pipe = identity_context(_pipe);
 448    struct pipe_context *pipe = id_pipe->pipe;
 449
 450    pipe->set_clip_state(pipe,
 451                         clip);
 452 }
 453
 454 static void
 455 identity_set_constant_buffer(struct pipe_context *_pipe,
 456                              uint shader,
 457                              uint index,
 458                              struct pipe_resource *_resource)
 459 {
 460    struct identity_context *id_pipe = identity_context(_pipe);
 461    struct pipe_context *pipe = id_pipe->pipe;
 462    struct pipe_resource *unwrapped_resource;
 463    struct pipe_resource *resource = NULL;
 464
 465    /* XXX hmm? unwrap the input state */
 466    if (_resource) {
 467       unwrapped_resource = identity_resource_unwrap(_resource);
 468       resource = unwrapped_resource;
 469    }
 470
 471    pipe->set_constant_buffer(pipe,
 472                              shader,
 473                              index,
 474                              resource);
 475 }
 476
 477 static void
 478 identity_set_framebuffer_state(struct pipe_context *_pipe,
 479                                const struct pipe_framebuffer_state *_state)
 480 {
 481    struct identity_context *id_pipe = identity_context(_pipe);
 482    struct pipe_context *pipe = id_pipe->pipe;
 483    struct pipe_framebuffer_state unwrapped_state;
 484    struct pipe_framebuffer_state *state = NULL;
 485    unsigned i;
 486
 487    /* unwrap the input state */
 488    if (_state) {
 489       memcpy(&unwrapped_state, _state, sizeof(unwrapped_state));
 490       for(i = 0; i < _state->nr_cbufs; i++)
 491          unwrapped_state.cbufs[i] = identity_surface_unwrap(_state->cbufs[i]);
 492       for (; i < PIPE_MAX_COLOR_BUFS; i++)
 493          unwrapped_state.cbufs[i] = NULL;
 494       unwrapped_state.zsbuf = identity_surface_unwrap(_state->zsbuf);
 495       state = &unwrapped_state;
 496    }
 497
 498    pipe->set_framebuffer_state(pipe,
 499                                state);
 500 }
 501
 502 static void
 503 identity_set_polygon_stipple(struct pipe_context *_pipe,
 504                              const struct pipe_poly_stipple *poly_stipple)
 505 {
 506    struct identity_context *id_pipe = identity_context(_pipe);
 507    struct pipe_context *pipe = id_pipe->pipe;
 508
 509    pipe->set_polygon_stipple(pipe,
 510                              poly_stipple);
 511 }
 512
 513 static void
 514 identity_set_scissor_state(struct pipe_context *_pipe,
 515                            const struct pipe_scissor_state *scissor)
 516 {
 517    struct identity_context *id_pipe = identity_context(_pipe);
 518    struct pipe_context *pipe = id_pipe->pipe;
 519
 520    pipe->set_scissor_state(pipe,
 521                            scissor);
 522 }
 523
 524 static void
 525 identity_set_viewport_state(struct pipe_context *_pipe,
 526                             const struct pipe_viewport_state *viewport)
 527 {
 528    struct identity_context *id_pipe = identity_context(_pipe);
 529    struct pipe_context *pipe = id_pipe->pipe;
 530
 531    pipe->set_viewport_state(pipe,
 532                             viewport);
 533 }
 534
 535 static void
 536 identity_set_fragment_sampler_views(struct pipe_context *_pipe,
 537                                     unsigned num,
 538                                     struct pipe_sampler_view **_views)
 539 {
 540    struct identity_context *id_pipe = identity_context(_pipe);
 541    struct pipe_context *pipe = id_pipe->pipe;
 542    struct pipe_sampler_view *unwrapped_views[PIPE_MAX_SAMPLERS];
 543    struct pipe_sampler_view **views = NULL;
 544    unsigned i;
 545
 546    if (_views) {
 547       for (i = 0; i < num; i++)
 548          unwrapped_views[i] = identity_sampler_view_unwrap(_views[i]);
 549       for (; i < PIPE_MAX_SAMPLERS; i++)
 550          unwrapped_views[i] = NULL;
 551
 552       views = unwrapped_views;
 553    }
 554
 555    pipe->set_fragment_sampler_views(pipe, num, views);
 556 }
 557
 558 static void
 559 identity_set_vertex_sampler_views(struct pipe_context *_pipe,
 560                                   unsigned num,
 561                                   struct pipe_sampler_view **_views)
 562 {
 563    struct identity_context *id_pipe = identity_context(_pipe);
 564    struct pipe_context *pipe = id_pipe->pipe;
 565    struct pipe_sampler_view *unwrapped_views[PIPE_MAX_VERTEX_SAMPLERS];
 566    struct pipe_sampler_view **views = NULL;
 567    unsigned i;
 568
 569    if (_views) {
 570       for (i = 0; i < num; i++)
 571          unwrapped_views[i] = identity_sampler_view_unwrap(_views[i]);
 572       for (; i < PIPE_MAX_VERTEX_SAMPLERS; i++)
 573          unwrapped_views[i] = NULL;
 574
 575       views = unwrapped_views;
 576    }
 577
 578    pipe->set_vertex_sampler_views(pipe, num, views);
 579 }
 580
 581 static void
 582 identity_set_vertex_buffers(struct pipe_context *_pipe,
 583                             unsigned num_buffers,
 584                             const struct pipe_vertex_buffer *_buffers)
 585 {
 586    struct identity_context *id_pipe = identity_context(_pipe);
 587    struct pipe_context *pipe = id_pipe->pipe;
 588    struct pipe_vertex_buffer unwrapped_buffers[PIPE_MAX_SHADER_INPUTS];
 589    struct pipe_vertex_buffer *buffers = NULL;
 590    unsigned i;
 591
 592    if (num_buffers) {
 593       memcpy(unwrapped_buffers, _buffers, num_buffers * sizeof(*_buffers));
 594       for (i = 0; i < num_buffers; i++)
 595          unwrapped_buffers[i].buffer = identity_resource_unwrap(_buffers[i].buffer);
 596       buffers = unwrapped_buffers;
 597    }
 598
 599    pipe->set_vertex_buffers(pipe,
 600                             num_buffers,
 601                             buffers);
 602 }
 603 static void
 604 identity_surface_copy(struct pipe_context *_pipe,
 605                       struct pipe_surface *_dst,
 606                       unsigned dstx,
 607                       unsigned dsty,
 608                       struct pipe_surface *_src,
 609                       unsigned srcx,
 610                       unsigned srcy,
 611                       unsigned width,
 612                       unsigned height)
 613 {
 614    struct identity_context *id_pipe = identity_context(_pipe);
 615    struct identity_surface *id_surface_dst = identity_surface(_dst);
 616    struct identity_surface *id_surface_src = identity_surface(_src);
 617    struct pipe_context *pipe = id_pipe->pipe;
 618    struct pipe_surface *dst = id_surface_dst->surface;
 619    struct pipe_surface *src = id_surface_src->surface;
 620
 621    pipe->surface_copy(pipe,
 622                       dst,
 623                       dstx,
 624                       dsty,
 625                       src,
 626                       srcx,
 627                       srcy,
 628                       width,
 629                       height);
 630 }
 631
 632 static void
 633 identity_surface_fill(struct pipe_context *_pipe,
 634                       struct pipe_surface *_dst,
 635                       unsigned dstx,
 636                       unsigned dsty,
 637                       unsigned width,
 638                       unsigned height,
 639                       unsigned value)
 640 {
 641    struct identity_context *id_pipe = identity_context(_pipe);
 642    struct identity_surface *id_surface_dst = identity_surface(_dst);
 643    struct pipe_context *pipe = id_pipe->pipe;
 644    struct pipe_surface *dst = id_surface_dst->surface;
 645
 646    pipe->surface_fill(pipe,
 647                       dst,
 648                       dstx,
 649                       dsty,
 650                       width,
 651                       height,
 652                       value);
 653 }
 654
 655 static void
 656 identity_clear(struct pipe_context *_pipe,
 657                unsigned buffers,
 658                const float *rgba,
 659                double depth,
 660                unsigned stencil)
 661 {
 662    struct identity_context *id_pipe = identity_context(_pipe);
 663    struct pipe_context *pipe = id_pipe->pipe;
 664
 665    pipe->clear(pipe,
 666                buffers,
 667                rgba,
 668                depth,
 669                stencil);
 670 }
 671
 672 static void
 673 identity_flush(struct pipe_context *_pipe,
 674                unsigned flags,
 675                struct pipe_fence_handle **fence)
 676 {
 677    struct identity_context *id_pipe = identity_context(_pipe);
 678    struct pipe_context *pipe = id_pipe->pipe;
 679
 680    pipe->flush(pipe,
 681                flags,
 682                fence);
 683 }
 684
 685 static unsigned int
 686 identity_is_resource_referenced(struct pipe_context *_pipe,
 687                                 struct pipe_resource *_resource,
 688                                 unsigned face,
 689                                 unsigned level)
 690 {
 691    struct identity_context *id_pipe = identity_context(_pipe);
 692    struct identity_resource *id_resource = identity_resource(_resource);
 693    struct pipe_context *pipe = id_pipe->pipe;
 694    struct pipe_resource *texture = id_resource->resource;
 695
 696    return pipe->is_resource_referenced(pipe,
 697                                        texture,
 698                                        face,
 699                                        level);
 700 }
 701
 702 static struct pipe_sampler_view *
 703 identity_create_sampler_view(struct pipe_context *pipe,
 704                              struct pipe_resource *texture,
 705                              const struct pipe_sampler_view *templ)
 706 {
 707    struct identity_context *id_pipe = identity_context(pipe);
 708    struct identity_resource *id_resource = identity_resource(texture);
 709    struct pipe_context *pipe_unwrapped = id_pipe->pipe;
 710    struct pipe_resource *texture_unwrapped = id_resource->resource;
 711    struct identity_sampler_view *view = MALLOC(sizeof(struct identity_sampler_view));
 712
 713    view->sampler_view = pipe_unwrapped->create_sampler_view(pipe_unwrapped,
 714                                                             texture_unwrapped,
 715                                                             templ);
 716
 717    view->base = *templ;
 718    view->base.reference.count = 1;
 719    view->base.texture = NULL;
 720    pipe_resource_reference(&view->base.texture, texture);
 721    view->base.context = pipe;
 722
 723    return &view->base;
 724 }
 725
 726 static void
 727 identity_sampler_view_destroy(struct pipe_context *pipe,
 728                               struct pipe_sampler_view *view)
 729 {
 730    struct identity_context *id_pipe = identity_context(pipe);
 731    struct identity_sampler_view *id_view = identity_sampler_view(view);
 732    struct pipe_context *pipe_unwrapped = id_pipe->pipe;
 733    struct pipe_sampler_view *view_unwrapped = id_view->sampler_view;
 734
 735    pipe_unwrapped->sampler_view_destroy(pipe_unwrapped,
 736                                         view_unwrapped);
 737
 738    pipe_resource_reference(&view->texture, NULL);
 739    FREE(view);
 740 }
 741
 742 static struct pipe_transfer *
 743 identity_context_get_transfer(struct pipe_context *_context,
 744                               struct pipe_resource *_resource,
 745                               struct pipe_subresource sr,
 746                               unsigned usage,
 747                               const struct pipe_box *box)
 748 {
 749    struct identity_context *id_context = identity_context(_context);
 750    struct identity_resource *id_resource = identity_resource(_resource);
 751    struct pipe_context *context = id_context->pipe;
 752    struct pipe_resource *texture = id_resource->resource;
 753    struct pipe_transfer *result;
 754
 755    result = context->get_transfer(context,
 756                                   texture,
 757                                   sr,
 758                                   usage,
 759                                   box);
 760
 761    if (result)
 762       return identity_transfer_create(id_context, id_resource, result);
 763    return NULL;
 764 }
 765
 766 static void
 767 identity_context_transfer_destroy(struct pipe_context *_pipe,
 768                                   struct pipe_transfer *_transfer)
 769 {
 770    identity_transfer_destroy(identity_context(_pipe),
 771                              identity_transfer(_transfer));
 772 }
 773
 774 static void *
 775 identity_context_transfer_map(struct pipe_context *_context,
 776                               struct pipe_transfer *_transfer)
 777 {
 778    struct identity_context *id_context = identity_context(_context);
 779    struct identity_transfer *id_transfer = identity_transfer(_transfer);
 780    struct pipe_context *context = id_context->pipe;
 781    struct pipe_transfer *transfer = id_transfer->transfer;
 782
 783    return context->transfer_map(context,
 784                                 transfer);
 785 }
 786
 787
 788
 789 static void
 790 identity_context_transfer_flush_region(struct pipe_context *_context,
 791                                        struct pipe_transfer *_transfer,
 792                                        const struct pipe_box *box)
 793 {
 794    struct identity_context *id_context = identity_context(_context);
 795    struct identity_transfer *id_transfer = identity_transfer(_transfer);
 796    struct pipe_context *context = id_context->pipe;
 797    struct pipe_transfer *transfer = id_transfer->transfer;
 798
 799    context->transfer_flush_region(context,
 800                                   transfer,
 801                                   box);
 802 }
 803
 804
 805 static void
 806 identity_context_transfer_unmap(struct pipe_context *_context,
 807                                 struct pipe_transfer *_transfer)
 808 {
 809    struct identity_context *id_context = identity_context(_context);
 810    struct identity_transfer *id_transfer = identity_transfer(_transfer);
 811    struct pipe_context *context = id_context->pipe;
 812    struct pipe_transfer *transfer = id_transfer->transfer;
 813
 814    context->transfer_unmap(context,
 815                            transfer);
 816 }
 817
 818
 819 static void
 820 identity_context_transfer_inline_write(struct pipe_context *_context,
 821                                        struct pipe_resource *_resource,
 822                                        struct pipe_subresource sr,
 823                                        unsigned usage,
 824                                        const struct pipe_box *box,
 825                                        const void *data,
 826                                        unsigned stride,
 827                                        unsigned slice_stride)
 828 {
 829    struct identity_context *id_context = identity_context(_context);
 830    struct identity_resource *id_resource = identity_resource(_resource);
 831    struct pipe_context *context = id_context->pipe;
 832    struct pipe_resource *texture = id_resource->resource;
 833
 834    context->transfer_inline_write(context,
 835                                   texture,
 836                                   sr,
 837                                   usage,
 838                                   box,
 839                                   data,
 840                                   stride,
 841                                   slice_stride);
 842 }
 843
 844
 845 struct pipe_context *
 846 identity_context_create(struct pipe_screen *_screen, struct pipe_context *pipe)
 847 {
 848    struct identity_context *id_pipe;
 849    (void)identity_screen(_screen);
 850
 851    id_pipe = CALLOC_STRUCT(identity_context);
 852    if (!id_pipe) {
 853       return NULL;
 854    }
 855
 856    id_pipe->base.winsys = NULL;
 857    id_pipe->base.screen = _screen;
 858    id_pipe->base.priv = pipe->priv; /* expose wrapped data */
 859    id_pipe->base.draw = NULL;
 860
 861    id_pipe->base.destroy = identity_destroy;
 862    id_pipe->base.draw_arrays = identity_draw_arrays;
 863    id_pipe->base.draw_elements = identity_draw_elements;
 864    id_pipe->base.draw_range_elements = identity_draw_range_elements;
 865    id_pipe->base.create_query = identity_create_query;
 866    id_pipe->base.destroy_query = identity_destroy_query;
 867    id_pipe->base.begin_query = identity_begin_query;
 868    id_pipe->base.end_query = identity_end_query;
 869    id_pipe->base.get_query_result = identity_get_query_result;
 870    id_pipe->base.create_blend_state = identity_create_blend_state;
 871    id_pipe->base.bind_blend_state = identity_bind_blend_state;
 872    id_pipe->base.delete_blend_state = identity_delete_blend_state;
 873    id_pipe->base.create_sampler_state = identity_create_sampler_state;
 874    id_pipe->base.bind_fragment_sampler_states = identity_bind_fragment_sampler_states;
 875    id_pipe->base.bind_vertex_sampler_states = identity_bind_vertex_sampler_states;
 876    id_pipe->base.delete_sampler_state = identity_delete_sampler_state;
 877    id_pipe->base.create_rasterizer_state = identity_create_rasterizer_state;
 878    id_pipe->base.bind_rasterizer_state = identity_bind_rasterizer_state;
 879    id_pipe->base.delete_rasterizer_state = identity_delete_rasterizer_state;
 880    id_pipe->base.create_depth_stencil_alpha_state = identity_create_depth_stencil_alpha_state;
 881    id_pipe->base.bind_depth_stencil_alpha_state = identity_bind_depth_stencil_alpha_state;
 882    id_pipe->base.delete_depth_stencil_alpha_state = identity_delete_depth_stencil_alpha_state;
 883    id_pipe->base.create_fs_state = identity_create_fs_state;
 884    id_pipe->base.bind_fs_state = identity_bind_fs_state;
 885    id_pipe->base.delete_fs_state = identity_delete_fs_state;
 886    id_pipe->base.create_vs_state = identity_create_vs_state;
 887    id_pipe->base.bind_vs_state = identity_bind_vs_state;
 888    id_pipe->base.delete_vs_state = identity_delete_vs_state;
 889    id_pipe->base.create_vertex_elements_state = identity_create_vertex_elements_state;
 890    id_pipe->base.bind_vertex_elements_state = identity_bind_vertex_elements_state;
 891    id_pipe->base.delete_vertex_elements_state = identity_delete_vertex_elements_state;
 892    id_pipe->base.set_blend_color = identity_set_blend_color;
 893    id_pipe->base.set_stencil_ref = identity_set_stencil_ref;
 894    id_pipe->base.set_clip_state = identity_set_clip_state;
 895    id_pipe->base.set_constant_buffer = identity_set_constant_buffer;
 896    id_pipe->base.set_framebuffer_state = identity_set_framebuffer_state;
 897    id_pipe->base.set_polygon_stipple = identity_set_polygon_stipple;
 898    id_pipe->base.set_scissor_state = identity_set_scissor_state;
 899    id_pipe->base.set_viewport_state = identity_set_viewport_state;
 900    id_pipe->base.set_fragment_sampler_views = identity_set_fragment_sampler_views;
 901    id_pipe->base.set_vertex_sampler_views = identity_set_vertex_sampler_views;
 902    id_pipe->base.set_vertex_buffers = identity_set_vertex_buffers;
 903    id_pipe->base.surface_copy = identity_surface_copy;
 904    id_pipe->base.surface_fill = identity_surface_fill;
 905    id_pipe->base.clear = identity_clear;
 906    id_pipe->base.flush = identity_flush;
 907    id_pipe->base.is_resource_referenced = identity_is_resource_referenced;
 908    id_pipe->base.create_sampler_view = identity_create_sampler_view;
 909    id_pipe->base.sampler_view_destroy = identity_sampler_view_destroy;
 910    id_pipe->base.get_transfer = identity_context_get_transfer;
 911    id_pipe->base.transfer_destroy = identity_context_transfer_destroy;
 912    id_pipe->base.transfer_map = identity_context_transfer_map;
 913    id_pipe->base.transfer_unmap = identity_context_transfer_unmap;
 914    id_pipe->base.transfer_flush_region = identity_context_transfer_flush_region;
 915    id_pipe->base.transfer_inline_write = identity_context_transfer_inline_write;
 916
 917    id_pipe->pipe = pipe;
 918
 919    return &id_pipe->base;
 920 }