src/gallium/drivers/galahad/glhd_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
  31 #include "util/u_format.h"
  32 #include "util/u_memory.h"
  33 #include "util/u_inlines.h"
  34
  35 #include "glhd_context.h"
  36 #include "glhd_objects.h"
  37
  38
  39 static void
  40 galahad_destroy(struct pipe_context *_pipe)
  41 {
  42    struct galahad_context *glhd_pipe = galahad_context(_pipe);
  43    struct pipe_context *pipe = glhd_pipe->pipe;
  44
  45    pipe->destroy(pipe);
  46
  47    FREE(glhd_pipe);
  48 }
  49
  50 static void
  51 galahad_draw_vbo(struct pipe_context *_pipe,
  52                  const struct pipe_draw_info *info)
  53 {
  54    struct galahad_context *glhd_pipe = galahad_context(_pipe);
  55    struct pipe_context *pipe = glhd_pipe->pipe;
  56
  57    /* XXX we should check that all bound resources are unmapped
  58     * before drawing.
  59     */
  60
  61    pipe->draw_vbo(pipe, info);
  62 }
  63
  64 static struct pipe_query *
  65 galahad_create_query(struct pipe_context *_pipe,
  66                       unsigned query_type)
  67 {
  68    struct galahad_context *glhd_pipe = galahad_context(_pipe);
  69    struct pipe_context *pipe = glhd_pipe->pipe;
  70
  71    if (query_type == PIPE_QUERY_OCCLUSION_COUNTER &&
  72       !pipe->screen->get_param(pipe->screen, PIPE_CAP_OCCLUSION_QUERY)) {
  73       glhd_error("Occlusion query requested but not supported");
  74    }
  75
  76    if (query_type == PIPE_QUERY_TIME_ELAPSED &&
  77       !pipe->screen->get_param(pipe->screen, PIPE_CAP_TIMER_QUERY)) {
  78       glhd_error("Timer query requested but not supported");
  79    }
  80
  81    return pipe->create_query(pipe,
  82                              query_type);
  83 }
  84
  85 static void
  86 galahad_destroy_query(struct pipe_context *_pipe,
  87                        struct pipe_query *query)
  88 {
  89    struct galahad_context *glhd_pipe = galahad_context(_pipe);
  90    struct pipe_context *pipe = glhd_pipe->pipe;
  91
  92    pipe->destroy_query(pipe,
  93                        query);
  94 }
  95
  96 static void
  97 galahad_begin_query(struct pipe_context *_pipe,
  98                      struct pipe_query *query)
  99 {
 100    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 101    struct pipe_context *pipe = glhd_pipe->pipe;
 102
 103    pipe->begin_query(pipe,
 104                      query);
 105 }
 106
 107 static void
 108 galahad_end_query(struct pipe_context *_pipe,
 109                    struct pipe_query *query)
 110 {
 111    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 112    struct pipe_context *pipe = glhd_pipe->pipe;
 113
 114    pipe->end_query(pipe,
 115                    query);
 116 }
 117
 118 static boolean
 119 galahad_get_query_result(struct pipe_context *_pipe,
 120                           struct pipe_query *query,
 121                           boolean wait,
 122                           void *result)
 123 {
 124    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 125    struct pipe_context *pipe = glhd_pipe->pipe;
 126
 127    return pipe->get_query_result(pipe,
 128                                  query,
 129                                  wait,
 130                                  result);
 131 }
 132
 133 static void *
 134 galahad_create_blend_state(struct pipe_context *_pipe,
 135                             const struct pipe_blend_state *blend)
 136 {
 137    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 138    struct pipe_context *pipe = glhd_pipe->pipe;
 139
 140    if (blend->logicop_enable) {
 141       if (blend->rt[0].blend_enable) {
 142          glhd_warn("Blending enabled for render target 0, but logicops "
 143             "are enabled");
 144       }
 145    }
 146
 147    return pipe->create_blend_state(pipe,
 148                                    blend);
 149 }
 150
 151 static void
 152 galahad_bind_blend_state(struct pipe_context *_pipe,
 153                           void *blend)
 154 {
 155    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 156    struct pipe_context *pipe = glhd_pipe->pipe;
 157
 158    pipe->bind_blend_state(pipe,
 159                               blend);
 160 }
 161
 162 static void
 163 galahad_delete_blend_state(struct pipe_context *_pipe,
 164                             void *blend)
 165 {
 166    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 167    struct pipe_context *pipe = glhd_pipe->pipe;
 168
 169    pipe->delete_blend_state(pipe,
 170                             blend);
 171 }
 172
 173 static void *
 174 galahad_create_sampler_state(struct pipe_context *_pipe,
 175                               const struct pipe_sampler_state *sampler)
 176 {
 177    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 178    struct pipe_context *pipe = glhd_pipe->pipe;
 179
 180    return pipe->create_sampler_state(pipe,
 181                                      sampler);
 182 }
 183
 184 static void
 185 galahad_bind_fragment_sampler_states(struct pipe_context *_pipe,
 186                                       unsigned num_samplers,
 187                                       void **samplers)
 188 {
 189    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 190    struct pipe_context *pipe = glhd_pipe->pipe;
 191
 192    if (num_samplers > PIPE_MAX_SAMPLERS) {
 193       glhd_error("%u fragment samplers requested, "
 194          "but only %u are permitted by API",
 195          num_samplers, PIPE_MAX_SAMPLERS);
 196    }
 197
 198    pipe->bind_fragment_sampler_states(pipe,
 199                                       num_samplers,
 200                                       samplers);
 201 }
 202
 203 static void
 204 galahad_bind_vertex_sampler_states(struct pipe_context *_pipe,
 205                                     unsigned num_samplers,
 206                                     void **samplers)
 207 {
 208    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 209    struct pipe_context *pipe = glhd_pipe->pipe;
 210
 211    if (num_samplers > PIPE_MAX_VERTEX_SAMPLERS) {
 212       glhd_error("%u vertex samplers requested, "
 213          "but only %u are permitted by API",
 214          num_samplers, PIPE_MAX_VERTEX_SAMPLERS);
 215    }
 216
 217    pipe->bind_vertex_sampler_states(pipe,
 218                                     num_samplers,
 219                                     samplers);
 220 }
 221
 222 static void
 223 galahad_delete_sampler_state(struct pipe_context *_pipe,
 224                               void *sampler)
 225 {
 226    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 227    struct pipe_context *pipe = glhd_pipe->pipe;
 228
 229    pipe->delete_sampler_state(pipe,
 230                               sampler);
 231 }
 232
 233 static void *
 234 galahad_create_rasterizer_state(struct pipe_context *_pipe,
 235                                  const struct pipe_rasterizer_state *rasterizer)
 236 {
 237    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 238    struct pipe_context *pipe = glhd_pipe->pipe;
 239
 240    if (rasterizer->point_quad_rasterization) {
 241        if (rasterizer->point_smooth) {
 242            glhd_warn("Point smoothing requested but ignored");
 243        }
 244    } else {
 245        if (rasterizer->sprite_coord_enable) {
 246            glhd_warn("Point sprites requested but ignored");
 247        }
 248    }
 249
 250    return pipe->create_rasterizer_state(pipe,
 251                                         rasterizer);
 252 }
 253
 254 static void
 255 galahad_bind_rasterizer_state(struct pipe_context *_pipe,
 256                                void *rasterizer)
 257 {
 258    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 259    struct pipe_context *pipe = glhd_pipe->pipe;
 260
 261    pipe->bind_rasterizer_state(pipe,
 262                                rasterizer);
 263 }
 264
 265 static void
 266 galahad_delete_rasterizer_state(struct pipe_context *_pipe,
 267                                  void *rasterizer)
 268 {
 269    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 270    struct pipe_context *pipe = glhd_pipe->pipe;
 271
 272    pipe->delete_rasterizer_state(pipe,
 273                                  rasterizer);
 274 }
 275
 276 static void *
 277 galahad_create_depth_stencil_alpha_state(struct pipe_context *_pipe,
 278                                           const struct pipe_depth_stencil_alpha_state *depth_stencil_alpha)
 279 {
 280    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 281    struct pipe_context *pipe = glhd_pipe->pipe;
 282
 283    return pipe->create_depth_stencil_alpha_state(pipe,
 284                                                  depth_stencil_alpha);
 285 }
 286
 287 static void
 288 galahad_bind_depth_stencil_alpha_state(struct pipe_context *_pipe,
 289                                         void *depth_stencil_alpha)
 290 {
 291    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 292    struct pipe_context *pipe = glhd_pipe->pipe;
 293
 294    pipe->bind_depth_stencil_alpha_state(pipe,
 295                                         depth_stencil_alpha);
 296 }
 297
 298 static void
 299 galahad_delete_depth_stencil_alpha_state(struct pipe_context *_pipe,
 300                                           void *depth_stencil_alpha)
 301 {
 302    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 303    struct pipe_context *pipe = glhd_pipe->pipe;
 304
 305    pipe->delete_depth_stencil_alpha_state(pipe,
 306                                           depth_stencil_alpha);
 307 }
 308
 309 static void *
 310 galahad_create_fs_state(struct pipe_context *_pipe,
 311                          const struct pipe_shader_state *fs)
 312 {
 313    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 314    struct pipe_context *pipe = glhd_pipe->pipe;
 315
 316    return pipe->create_fs_state(pipe,
 317                                 fs);
 318 }
 319
 320 static void
 321 galahad_bind_fs_state(struct pipe_context *_pipe,
 322                        void *fs)
 323 {
 324    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 325    struct pipe_context *pipe = glhd_pipe->pipe;
 326
 327    pipe->bind_fs_state(pipe,
 328                        fs);
 329 }
 330
 331 static void
 332 galahad_delete_fs_state(struct pipe_context *_pipe,
 333                          void *fs)
 334 {
 335    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 336    struct pipe_context *pipe = glhd_pipe->pipe;
 337
 338    pipe->delete_fs_state(pipe,
 339                          fs);
 340 }
 341
 342 static void *
 343 galahad_create_vs_state(struct pipe_context *_pipe,
 344                          const struct pipe_shader_state *vs)
 345 {
 346    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 347    struct pipe_context *pipe = glhd_pipe->pipe;
 348
 349    return pipe->create_vs_state(pipe,
 350                                 vs);
 351 }
 352
 353 static void
 354 galahad_bind_vs_state(struct pipe_context *_pipe,
 355                        void *vs)
 356 {
 357    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 358    struct pipe_context *pipe = glhd_pipe->pipe;
 359
 360    pipe->bind_vs_state(pipe,
 361                        vs);
 362 }
 363
 364 static void
 365 galahad_delete_vs_state(struct pipe_context *_pipe,
 366                          void *vs)
 367 {
 368    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 369    struct pipe_context *pipe = glhd_pipe->pipe;
 370
 371    pipe->delete_vs_state(pipe,
 372                          vs);
 373 }
 374
 375
 376 static void *
 377 galahad_create_vertex_elements_state(struct pipe_context *_pipe,
 378                                       unsigned num_elements,
 379                                       const struct pipe_vertex_element *vertex_elements)
 380 {
 381    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 382    struct pipe_context *pipe = glhd_pipe->pipe;
 383
 384    /* XXX check if stride lines up with element size, at least for floats */
 385
 386    return pipe->create_vertex_elements_state(pipe,
 387                                              num_elements,
 388                                              vertex_elements);
 389 }
 390
 391 static void
 392 galahad_bind_vertex_elements_state(struct pipe_context *_pipe,
 393                                     void *velems)
 394 {
 395    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 396    struct pipe_context *pipe = glhd_pipe->pipe;
 397
 398    pipe->bind_vertex_elements_state(pipe,
 399                                     velems);
 400 }
 401
 402 static void
 403 galahad_delete_vertex_elements_state(struct pipe_context *_pipe,
 404                                       void *velems)
 405 {
 406    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 407    struct pipe_context *pipe = glhd_pipe->pipe;
 408
 409    pipe->delete_vertex_elements_state(pipe,
 410                                       velems);
 411 }
 412
 413 static void
 414 galahad_set_blend_color(struct pipe_context *_pipe,
 415                          const struct pipe_blend_color *blend_color)
 416 {
 417    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 418    struct pipe_context *pipe = glhd_pipe->pipe;
 419
 420    pipe->set_blend_color(pipe,
 421                          blend_color);
 422 }
 423
 424 static void
 425 galahad_set_stencil_ref(struct pipe_context *_pipe,
 426                          const struct pipe_stencil_ref *stencil_ref)
 427 {
 428    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 429    struct pipe_context *pipe = glhd_pipe->pipe;
 430
 431    pipe->set_stencil_ref(pipe,
 432                          stencil_ref);
 433 }
 434
 435 static void
 436 galahad_set_clip_state(struct pipe_context *_pipe,
 437                         const struct pipe_clip_state *clip)
 438 {
 439    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 440    struct pipe_context *pipe = glhd_pipe->pipe;
 441
 442    pipe->set_clip_state(pipe,
 443                         clip);
 444 }
 445
 446 static void
 447 galahad_set_sample_mask(struct pipe_context *_pipe,
 448                          unsigned sample_mask)
 449 {
 450    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 451    struct pipe_context *pipe = glhd_pipe->pipe;
 452
 453    pipe->set_sample_mask(pipe,
 454                          sample_mask);
 455 }
 456
 457 static void
 458 galahad_set_constant_buffer(struct pipe_context *_pipe,
 459                              uint shader,
 460                              uint index,
 461                              struct pipe_resource *_resource)
 462 {
 463    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 464    struct pipe_context *pipe = glhd_pipe->pipe;
 465    struct pipe_resource *unwrapped_resource;
 466    struct pipe_resource *resource = NULL;
 467
 468    if (shader >= PIPE_SHADER_TYPES) {
 469       glhd_error("Unknown shader type %u", shader);
 470    }
 471
 472    if (index &&
 473       index >=
 474          pipe->screen->get_shader_param(pipe->screen, shader, PIPE_SHADER_CAP_MAX_CONST_BUFFERS)) {
 475       glhd_error("Access to constant buffer %u requested, "
 476          "but only %d are supported",
 477          index,
 478          pipe->screen->get_shader_param(pipe->screen, shader, PIPE_SHADER_CAP_MAX_CONST_BUFFERS));
 479    }
 480
 481    /* XXX hmm? unwrap the input state */
 482    if (_resource) {
 483       unwrapped_resource = galahad_resource_unwrap(_resource);
 484       resource = unwrapped_resource;
 485    }
 486
 487    pipe->set_constant_buffer(pipe,
 488                              shader,
 489                              index,
 490                              resource);
 491 }
 492
 493 static void
 494 galahad_set_framebuffer_state(struct pipe_context *_pipe,
 495                                const struct pipe_framebuffer_state *_state)
 496 {
 497    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 498    struct pipe_context *pipe = glhd_pipe->pipe;
 499    struct pipe_framebuffer_state unwrapped_state;
 500    struct pipe_framebuffer_state *state = NULL;
 501    unsigned i;
 502
 503    if (_state->nr_cbufs > PIPE_MAX_COLOR_BUFS) {
 504       glhd_error("%d render targets bound, but only %d are permitted by API",
 505          _state->nr_cbufs, PIPE_MAX_COLOR_BUFS);
 506    } else if (_state->nr_cbufs >
 507       pipe->screen->get_param(pipe->screen, PIPE_CAP_MAX_RENDER_TARGETS)) {
 508       glhd_warn("%d render targets bound, but only %d are supported",
 509          _state->nr_cbufs,
 510          pipe->screen->get_param(pipe->screen, PIPE_CAP_MAX_RENDER_TARGETS));
 511    }
 512
 513    /* unwrap the input state */
 514    if (_state) {
 515       memcpy(&unwrapped_state, _state, sizeof(unwrapped_state));
 516       for(i = 0; i < _state->nr_cbufs; i++)
 517          unwrapped_state.cbufs[i] = galahad_surface_unwrap(_state->cbufs[i]);
 518       for (; i < PIPE_MAX_COLOR_BUFS; i++)
 519          unwrapped_state.cbufs[i] = NULL;
 520       unwrapped_state.zsbuf = galahad_surface_unwrap(_state->zsbuf);
 521       state = &unwrapped_state;
 522    }
 523
 524    pipe->set_framebuffer_state(pipe,
 525                                state);
 526 }
 527
 528 static void
 529 galahad_set_polygon_stipple(struct pipe_context *_pipe,
 530                              const struct pipe_poly_stipple *poly_stipple)
 531 {
 532    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 533    struct pipe_context *pipe = glhd_pipe->pipe;
 534
 535    pipe->set_polygon_stipple(pipe,
 536                              poly_stipple);
 537 }
 538
 539 static void
 540 galahad_set_scissor_state(struct pipe_context *_pipe,
 541                            const struct pipe_scissor_state *scissor)
 542 {
 543    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 544    struct pipe_context *pipe = glhd_pipe->pipe;
 545
 546    pipe->set_scissor_state(pipe,
 547                            scissor);
 548 }
 549
 550 static void
 551 galahad_set_viewport_state(struct pipe_context *_pipe,
 552                             const struct pipe_viewport_state *viewport)
 553 {
 554    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 555    struct pipe_context *pipe = glhd_pipe->pipe;
 556
 557    pipe->set_viewport_state(pipe,
 558                             viewport);
 559 }
 560
 561 static void
 562 galahad_set_fragment_sampler_views(struct pipe_context *_pipe,
 563                                     unsigned num,
 564                                     struct pipe_sampler_view **_views)
 565 {
 566    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 567    struct pipe_context *pipe = glhd_pipe->pipe;
 568    struct pipe_sampler_view *unwrapped_views[PIPE_MAX_SAMPLERS];
 569    struct pipe_sampler_view **views = NULL;
 570    unsigned i;
 571
 572    if (_views) {
 573       for (i = 0; i < num; i++)
 574          unwrapped_views[i] = galahad_sampler_view_unwrap(_views[i]);
 575       for (; i < PIPE_MAX_SAMPLERS; i++)
 576          unwrapped_views[i] = NULL;
 577
 578       views = unwrapped_views;
 579    }
 580
 581    pipe->set_fragment_sampler_views(pipe, num, views);
 582 }
 583
 584 static void
 585 galahad_set_vertex_sampler_views(struct pipe_context *_pipe,
 586                                   unsigned num,
 587                                   struct pipe_sampler_view **_views)
 588 {
 589    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 590    struct pipe_context *pipe = glhd_pipe->pipe;
 591    struct pipe_sampler_view *unwrapped_views[PIPE_MAX_VERTEX_SAMPLERS];
 592    struct pipe_sampler_view **views = NULL;
 593    unsigned i;
 594
 595    if (_views) {
 596       for (i = 0; i < num; i++)
 597          unwrapped_views[i] = galahad_sampler_view_unwrap(_views[i]);
 598       for (; i < PIPE_MAX_VERTEX_SAMPLERS; i++)
 599          unwrapped_views[i] = NULL;
 600
 601       views = unwrapped_views;
 602    }
 603
 604    pipe->set_vertex_sampler_views(pipe, num, views);
 605 }
 606
 607 static void
 608 galahad_set_vertex_buffers(struct pipe_context *_pipe,
 609                             unsigned num_buffers,
 610                             const struct pipe_vertex_buffer *_buffers)
 611 {
 612    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 613    struct pipe_context *pipe = glhd_pipe->pipe;
 614    struct pipe_vertex_buffer unwrapped_buffers[PIPE_MAX_SHADER_INPUTS];
 615    struct pipe_vertex_buffer *buffers = NULL;
 616    unsigned i;
 617
 618    if (num_buffers) {
 619       memcpy(unwrapped_buffers, _buffers, num_buffers * sizeof(*_buffers));
 620       for (i = 0; i < num_buffers; i++)
 621          unwrapped_buffers[i].buffer = galahad_resource_unwrap(_buffers[i].buffer);
 622       buffers = unwrapped_buffers;
 623    }
 624
 625    pipe->set_vertex_buffers(pipe,
 626                             num_buffers,
 627                             buffers);
 628 }
 629
 630 static void
 631 galahad_set_index_buffer(struct pipe_context *_pipe,
 632                          const struct pipe_index_buffer *_ib)
 633 {
 634    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 635    struct pipe_context *pipe = glhd_pipe->pipe;
 636    struct pipe_index_buffer unwrapped_ib, *ib = NULL;
 637
 638    if (_ib->buffer) {
 639       switch (_ib->index_size) {
 640       case 1:
 641       case 2:
 642       case 4:
 643          break;
 644       default:
 645          glhd_warn("index buffer %p has unrecognized index size %d",
 646                    (void *) _ib->buffer, _ib->index_size);
 647          break;
 648       }
 649    }
 650    else if (_ib->offset || _ib->index_size) {
 651       glhd_warn("non-indexed state with index offset %d and index size %d",
 652             _ib->offset, _ib->index_size);
 653    }
 654
 655    if (_ib) {
 656       unwrapped_ib = *_ib;
 657       unwrapped_ib.buffer = galahad_resource_unwrap(_ib->buffer);
 658       ib = &unwrapped_ib;
 659    }
 660
 661    pipe->set_index_buffer(pipe, ib);
 662 }
 663
 664 static void
 665 galahad_resource_copy_region(struct pipe_context *_pipe,
 666                               struct pipe_resource *_dst,
 667                               unsigned dst_level,
 668                               unsigned dstx,
 669                               unsigned dsty,
 670                               unsigned dstz,
 671                               struct pipe_resource *_src,
 672                               unsigned src_level,
 673                               const struct pipe_box *src_box)
 674 {
 675    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 676    struct galahad_resource *glhd_resource_dst = galahad_resource(_dst);
 677    struct galahad_resource *glhd_resource_src = galahad_resource(_src);
 678    struct pipe_context *pipe = glhd_pipe->pipe;
 679    struct pipe_resource *dst = glhd_resource_dst->resource;
 680    struct pipe_resource *src = glhd_resource_src->resource;
 681
 682    if (_dst->format != _src->format) {
 683       glhd_warn("Format mismatch: Source is %s, destination is %s",
 684          util_format_short_name(_src->format),
 685          util_format_short_name(_dst->format));
 686    }
 687
 688    pipe->resource_copy_region(pipe,
 689                               dst,
 690                               dst_level,
 691                               dstx,
 692                               dsty,
 693                               dstz,
 694                               src,
 695                               src_level,
 696                               src_box);
 697 }
 698
 699 static void
 700 galahad_clear(struct pipe_context *_pipe,
 701                unsigned buffers,
 702                const float *rgba,
 703                double depth,
 704                unsigned stencil)
 705 {
 706    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 707    struct pipe_context *pipe = glhd_pipe->pipe;
 708
 709    pipe->clear(pipe,
 710                buffers,
 711                rgba,
 712                depth,
 713                stencil);
 714 }
 715
 716 static void
 717 galahad_clear_render_target(struct pipe_context *_pipe,
 718                              struct pipe_surface *_dst,
 719                              const float *rgba,
 720                              unsigned dstx, unsigned dsty,
 721                              unsigned width, unsigned height)
 722 {
 723    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 724    struct galahad_surface *glhd_surface_dst = galahad_surface(_dst);
 725    struct pipe_context *pipe = glhd_pipe->pipe;
 726    struct pipe_surface *dst = glhd_surface_dst->surface;
 727
 728    pipe->clear_render_target(pipe,
 729                              dst,
 730                              rgba,
 731                              dstx,
 732                              dsty,
 733                              width,
 734                              height);
 735 }
 736 static void
 737 galahad_clear_depth_stencil(struct pipe_context *_pipe,
 738                              struct pipe_surface *_dst,
 739                              unsigned clear_flags,
 740                              double depth,
 741                              unsigned stencil,
 742                              unsigned dstx, unsigned dsty,
 743                              unsigned width, unsigned height)
 744 {
 745    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 746    struct galahad_surface *glhd_surface_dst = galahad_surface(_dst);
 747    struct pipe_context *pipe = glhd_pipe->pipe;
 748    struct pipe_surface *dst = glhd_surface_dst->surface;
 749
 750    pipe->clear_depth_stencil(pipe,
 751                              dst,
 752                              clear_flags,
 753                              depth,
 754                              stencil,
 755                              dstx,
 756                              dsty,
 757                              width,
 758                              height);
 759
 760 }
 761
 762 static void
 763 galahad_flush(struct pipe_context *_pipe,
 764                unsigned flags,
 765                struct pipe_fence_handle **fence)
 766 {
 767    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 768    struct pipe_context *pipe = glhd_pipe->pipe;
 769
 770    pipe->flush(pipe,
 771                flags,
 772                fence);
 773 }
 774
 775 static unsigned int
 776 galahad_is_resource_referenced(struct pipe_context *_pipe,
 777                                 struct pipe_resource *_resource,
 778                                 unsigned level,
 779                                 int layer)
 780 {
 781    struct galahad_context *glhd_pipe = galahad_context(_pipe);
 782    struct galahad_resource *glhd_resource = galahad_resource(_resource);
 783    struct pipe_context *pipe = glhd_pipe->pipe;
 784    struct pipe_resource *resource = glhd_resource->resource;
 785
 786    return pipe->is_resource_referenced(pipe,
 787                                        resource,
 788                                        level,
 789                                        layer);
 790 }
 791
 792 static struct pipe_sampler_view *
 793 galahad_context_create_sampler_view(struct pipe_context *_pipe,
 794                                      struct pipe_resource *_resource,
 795                                      const struct pipe_sampler_view *templ)
 796 {
 797    struct galahad_context *glhd_context = galahad_context(_pipe);
 798    struct galahad_resource *glhd_resource = galahad_resource(_resource);
 799    struct pipe_context *pipe = glhd_context->pipe;
 800    struct pipe_resource *resource = glhd_resource->resource;
 801    struct pipe_sampler_view *result;
 802
 803    result = pipe->create_sampler_view(pipe,
 804                                       resource,
 805                                       templ);
 806
 807    if (result)
 808       return galahad_sampler_view_create(glhd_context, glhd_resource, result);
 809    return NULL;
 810 }
 811
 812 static void
 813 galahad_context_sampler_view_destroy(struct pipe_context *_pipe,
 814                                       struct pipe_sampler_view *_view)
 815 {
 816    galahad_sampler_view_destroy(galahad_context(_pipe),
 817                                  galahad_sampler_view(_view));
 818 }
 819
 820 static struct pipe_surface *
 821 galahad_context_create_surface(struct pipe_context *_pipe,
 822                                 struct pipe_resource *_resource,
 823                                 const struct pipe_surface *templ)
 824 {
 825    struct galahad_context *glhd_context = galahad_context(_pipe);
 826    struct galahad_resource *glhd_resource = galahad_resource(_resource);
 827    struct pipe_context *pipe = glhd_context->pipe;
 828    struct pipe_resource *resource = glhd_resource->resource;
 829    struct pipe_surface *result;
 830
 831    result = pipe->create_surface(pipe,
 832                                  resource,
 833                                  templ);
 834
 835    if (result)
 836       return galahad_surface_create(glhd_context, glhd_resource, result);
 837    return NULL;
 838 }
 839
 840 static void
 841 galahad_context_surface_destroy(struct pipe_context *_pipe,
 842                                 struct pipe_surface *_surface)
 843 {
 844    galahad_surface_destroy(galahad_context(_pipe),
 845                            galahad_surface(_surface));
 846 }
 847
 848
 849
 850 static struct pipe_transfer *
 851 galahad_context_get_transfer(struct pipe_context *_context,
 852                               struct pipe_resource *_resource,
 853                               unsigned level,
 854                               unsigned usage,
 855                               const struct pipe_box *box)
 856 {
 857    struct galahad_context *glhd_context = galahad_context(_context);
 858    struct galahad_resource *glhd_resource = galahad_resource(_resource);
 859    struct pipe_context *context = glhd_context->pipe;
 860    struct pipe_resource *resource = glhd_resource->resource;
 861    struct pipe_transfer *result;
 862
 863    result = context->get_transfer(context,
 864                                   resource,
 865                                   level,
 866                                   usage,
 867                                   box);
 868
 869    if (result)
 870       return galahad_transfer_create(glhd_context, glhd_resource, result);
 871    return NULL;
 872 }
 873
 874 static void
 875 galahad_context_transfer_destroy(struct pipe_context *_pipe,
 876                                   struct pipe_transfer *_transfer)
 877 {
 878    galahad_transfer_destroy(galahad_context(_pipe),
 879                              galahad_transfer(_transfer));
 880 }
 881
 882 static void *
 883 galahad_context_transfer_map(struct pipe_context *_context,
 884                               struct pipe_transfer *_transfer)
 885 {
 886    struct galahad_context *glhd_context = galahad_context(_context);
 887    struct galahad_transfer *glhd_transfer = galahad_transfer(_transfer);
 888    struct pipe_context *context = glhd_context->pipe;
 889    struct pipe_transfer *transfer = glhd_transfer->transfer;
 890
 891    struct galahad_resource *glhd_resource = galahad_resource(_transfer->resource);
 892
 893    glhd_resource->map_count++;
 894
 895    return context->transfer_map(context,
 896                                 transfer);
 897 }
 898
 899
 900
 901 static void
 902 galahad_context_transfer_flush_region(struct pipe_context *_context,
 903                                        struct pipe_transfer *_transfer,
 904                                        const struct pipe_box *box)
 905 {
 906    struct galahad_context *glhd_context = galahad_context(_context);
 907    struct galahad_transfer *glhd_transfer = galahad_transfer(_transfer);
 908    struct pipe_context *context = glhd_context->pipe;
 909    struct pipe_transfer *transfer = glhd_transfer->transfer;
 910
 911    context->transfer_flush_region(context,
 912                                   transfer,
 913                                   box);
 914 }
 915
 916
 917 static void
 918 galahad_context_transfer_unmap(struct pipe_context *_context,
 919                                 struct pipe_transfer *_transfer)
 920 {
 921    struct galahad_context *glhd_context = galahad_context(_context);
 922    struct galahad_transfer *glhd_transfer = galahad_transfer(_transfer);
 923    struct pipe_context *context = glhd_context->pipe;
 924    struct pipe_transfer *transfer = glhd_transfer->transfer;
 925    struct galahad_resource *glhd_resource = galahad_resource(_transfer->resource);
 926
 927    if (glhd_resource->map_count < 1) {
 928       glhd_warn("context::transfer_unmap() called too many times"
 929                 " (count = %d)\n", glhd_resource->map_count);
 930    }
 931
 932    glhd_resource->map_count--;
 933
 934    context->transfer_unmap(context,
 935                            transfer);
 936 }
 937
 938
 939 static void
 940 galahad_context_transfer_inline_write(struct pipe_context *_context,
 941                                        struct pipe_resource *_resource,
 942                                        unsigned level,
 943                                        unsigned usage,
 944                                        const struct pipe_box *box,
 945                                        const void *data,
 946                                        unsigned stride,
 947                                        unsigned slice_stride)
 948 {
 949    struct galahad_context *glhd_context = galahad_context(_context);
 950    struct galahad_resource *glhd_resource = galahad_resource(_resource);
 951    struct pipe_context *context = glhd_context->pipe;
 952    struct pipe_resource *resource = glhd_resource->resource;
 953
 954    context->transfer_inline_write(context,
 955                                   resource,
 956                                   level,
 957                                   usage,
 958                                   box,
 959                                   data,
 960                                   stride,
 961                                   slice_stride);
 962 }
 963
 964
 965 static void galahad_redefine_user_buffer(struct pipe_context *_context,
 966                                          struct pipe_resource *_resource,
 967                                          unsigned offset, unsigned size)
 968 {
 969    struct galahad_context *glhd_context = galahad_context(_context);
 970    struct galahad_resource *glhd_resource = galahad_resource(_resource);
 971    struct pipe_context *context = glhd_context->pipe;
 972    struct pipe_resource *resource = glhd_resource->resource;
 973
 974    context->redefine_user_buffer(context, resource, offset, size);
 975 }
 976
 977
 978 struct pipe_context *
 979 galahad_context_create(struct pipe_screen *_screen, struct pipe_context *pipe)
 980 {
 981    struct galahad_context *glhd_pipe;
 982    (void)galahad_screen(_screen);
 983
 984    glhd_pipe = CALLOC_STRUCT(galahad_context);
 985    if (!glhd_pipe) {
 986       return NULL;
 987    }
 988
 989    glhd_pipe->base.winsys = NULL;
 990    glhd_pipe->base.screen = _screen;
 991    glhd_pipe->base.priv = pipe->priv; /* expose wrapped data */
 992    glhd_pipe->base.draw = NULL;
 993
 994    glhd_pipe->base.destroy = galahad_destroy;
 995    glhd_pipe->base.draw_vbo = galahad_draw_vbo;
 996    glhd_pipe->base.create_query = galahad_create_query;
 997    glhd_pipe->base.destroy_query = galahad_destroy_query;
 998    glhd_pipe->base.begin_query = galahad_begin_query;
 999    glhd_pipe->base.end_query = galahad_end_query;
1000    glhd_pipe->base.get_query_result = galahad_get_query_result;
1001    glhd_pipe->base.create_blend_state = galahad_create_blend_state;
1002    glhd_pipe->base.bind_blend_state = galahad_bind_blend_state;
1003    glhd_pipe->base.delete_blend_state = galahad_delete_blend_state;
1004    glhd_pipe->base.create_sampler_state = galahad_create_sampler_state;
1005    glhd_pipe->base.bind_fragment_sampler_states = galahad_bind_fragment_sampler_states;
1006    glhd_pipe->base.bind_vertex_sampler_states = galahad_bind_vertex_sampler_states;
1007    glhd_pipe->base.delete_sampler_state = galahad_delete_sampler_state;
1008    glhd_pipe->base.create_rasterizer_state = galahad_create_rasterizer_state;
1009    glhd_pipe->base.bind_rasterizer_state = galahad_bind_rasterizer_state;
1010    glhd_pipe->base.delete_rasterizer_state = galahad_delete_rasterizer_state;
1011    glhd_pipe->base.create_depth_stencil_alpha_state = galahad_create_depth_stencil_alpha_state;
1012    glhd_pipe->base.bind_depth_stencil_alpha_state = galahad_bind_depth_stencil_alpha_state;
1013    glhd_pipe->base.delete_depth_stencil_alpha_state = galahad_delete_depth_stencil_alpha_state;
1014    glhd_pipe->base.create_fs_state = galahad_create_fs_state;
1015    glhd_pipe->base.bind_fs_state = galahad_bind_fs_state;
1016    glhd_pipe->base.delete_fs_state = galahad_delete_fs_state;
1017    glhd_pipe->base.create_vs_state = galahad_create_vs_state;
1018    glhd_pipe->base.bind_vs_state = galahad_bind_vs_state;
1019    glhd_pipe->base.delete_vs_state = galahad_delete_vs_state;
1020    glhd_pipe->base.create_vertex_elements_state = galahad_create_vertex_elements_state;
1021    glhd_pipe->base.bind_vertex_elements_state = galahad_bind_vertex_elements_state;
1022    glhd_pipe->base.delete_vertex_elements_state = galahad_delete_vertex_elements_state;
1023    glhd_pipe->base.set_blend_color = galahad_set_blend_color;
1024    glhd_pipe->base.set_stencil_ref = galahad_set_stencil_ref;
1025    glhd_pipe->base.set_clip_state = galahad_set_clip_state;
1026    glhd_pipe->base.set_sample_mask = galahad_set_sample_mask;
1027    glhd_pipe->base.set_constant_buffer = galahad_set_constant_buffer;
1028    glhd_pipe->base.set_framebuffer_state = galahad_set_framebuffer_state;
1029    glhd_pipe->base.set_polygon_stipple = galahad_set_polygon_stipple;
1030    glhd_pipe->base.set_scissor_state = galahad_set_scissor_state;
1031    glhd_pipe->base.set_viewport_state = galahad_set_viewport_state;
1032    glhd_pipe->base.set_fragment_sampler_views = galahad_set_fragment_sampler_views;
1033    glhd_pipe->base.set_vertex_sampler_views = galahad_set_vertex_sampler_views;
1034    glhd_pipe->base.set_vertex_buffers = galahad_set_vertex_buffers;
1035    glhd_pipe->base.set_index_buffer = galahad_set_index_buffer;
1036    glhd_pipe->base.resource_copy_region = galahad_resource_copy_region;
1037    glhd_pipe->base.clear = galahad_clear;
1038    glhd_pipe->base.clear_render_target = galahad_clear_render_target;
1039    glhd_pipe->base.clear_depth_stencil = galahad_clear_depth_stencil;
1040    glhd_pipe->base.flush = galahad_flush;
1041    glhd_pipe->base.is_resource_referenced = galahad_is_resource_referenced;
1042    glhd_pipe->base.create_sampler_view = galahad_context_create_sampler_view;
1043    glhd_pipe->base.sampler_view_destroy = galahad_context_sampler_view_destroy;
1044    glhd_pipe->base.create_surface = galahad_context_create_surface;
1045    glhd_pipe->base.surface_destroy = galahad_context_surface_destroy;
1046    glhd_pipe->base.get_transfer = galahad_context_get_transfer;
1047    glhd_pipe->base.transfer_destroy = galahad_context_transfer_destroy;
1048    glhd_pipe->base.transfer_map = galahad_context_transfer_map;
1049    glhd_pipe->base.transfer_unmap = galahad_context_transfer_unmap;
1050    glhd_pipe->base.transfer_flush_region = galahad_context_transfer_flush_region;
1051    glhd_pipe->base.transfer_inline_write = galahad_context_transfer_inline_write;
1052    glhd_pipe->base.redefine_user_buffer = galahad_redefine_user_buffer;
1053
1054    glhd_pipe->pipe = pipe;
1055
1056    glhd_warn("Created context %p", (void *) glhd_pipe);
1057
1058    return &glhd_pipe->base;
1059 }