src/gallium/auxiliary/cso_cache/cso_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28  /**
  29   * @file
  30   *
  31   * Wrap the cso cache & hash mechanisms in a simplified
  32   * pipe-driver-specific interface.
  33   *
  34   * @author Zack Rusin <zackr@vmware.com>
  35   * @author Keith Whitwell <keithw@vmware.com>
  36   */
  37
  38 #include "pipe/p_state.h"
  39 #include "util/u_draw.h"
  40 #include "util/u_framebuffer.h"
  41 #include "util/u_inlines.h"
  42 #include "util/u_math.h"
  43 #include "util/u_memory.h"
  44 #include "util/u_vbuf.h"
  45 #include "tgsi/tgsi_parse.h"
  46
  47 #include "cso_cache/cso_context.h"
  48 #include "cso_cache/cso_cache.h"
  49 #include "cso_cache/cso_hash.h"
  50 #include "cso_context.h"
  51
  52
  53 /**
  54  * Per-shader sampler information.
  55  */
  56 struct sampler_info
  57 {
  58    struct cso_sampler *cso_samplers[PIPE_MAX_SAMPLERS];
  59    void *samplers[PIPE_MAX_SAMPLERS];
  60 };
  61
  62
  63
  64 struct cso_context {
  65    struct pipe_context *pipe;
  66    struct cso_cache *cache;
  67    struct u_vbuf *vbuf;
  68
  69    boolean has_geometry_shader;
  70    boolean has_tessellation;
  71    boolean has_compute_shader;
  72    boolean has_streamout;
  73
  74    unsigned saved_state;  /**< bitmask of CSO_BIT_x flags */
  75
  76    struct pipe_sampler_view *fragment_views[PIPE_MAX_SHADER_SAMPLER_VIEWS];
  77    unsigned nr_fragment_views;
  78
  79    struct pipe_sampler_view *fragment_views_saved[PIPE_MAX_SHADER_SAMPLER_VIEWS];
  80    unsigned nr_fragment_views_saved;
  81
  82    struct sampler_info fragment_samplers_saved;
  83    struct sampler_info samplers[PIPE_SHADER_TYPES];
  84
  85    /* Temporary number until cso_single_sampler_done is called.
  86     * It tracks the highest sampler seen in cso_single_sampler.
  87     */
  88    int max_sampler_seen;
  89
  90    struct pipe_vertex_buffer aux_vertex_buffer_current;
  91    struct pipe_vertex_buffer aux_vertex_buffer_saved;
  92    unsigned aux_vertex_buffer_index;
  93
  94    struct pipe_constant_buffer aux_constbuf_current[PIPE_SHADER_TYPES];
  95    struct pipe_constant_buffer aux_constbuf_saved[PIPE_SHADER_TYPES];
  96
  97    struct pipe_image_view fragment_image0_current;
  98    struct pipe_image_view fragment_image0_saved;
  99
 100    unsigned nr_so_targets;
 101    struct pipe_stream_output_target *so_targets[PIPE_MAX_SO_BUFFERS];
 102
 103    unsigned nr_so_targets_saved;
 104    struct pipe_stream_output_target *so_targets_saved[PIPE_MAX_SO_BUFFERS];
 105
 106    /** Current and saved state.
 107     * The saved state is used as a 1-deep stack.
 108     */
 109    void *blend, *blend_saved;
 110    void *depth_stencil, *depth_stencil_saved;
 111    void *rasterizer, *rasterizer_saved;
 112    void *fragment_shader, *fragment_shader_saved;
 113    void *vertex_shader, *vertex_shader_saved;
 114    void *geometry_shader, *geometry_shader_saved;
 115    void *tessctrl_shader, *tessctrl_shader_saved;
 116    void *tesseval_shader, *tesseval_shader_saved;
 117    void *compute_shader;
 118    void *velements, *velements_saved;
 119    struct pipe_query *render_condition, *render_condition_saved;
 120    uint render_condition_mode, render_condition_mode_saved;
 121    boolean render_condition_cond, render_condition_cond_saved;
 122
 123    struct pipe_framebuffer_state fb, fb_saved;
 124    struct pipe_viewport_state vp, vp_saved;
 125    struct pipe_blend_color blend_color;
 126    unsigned sample_mask, sample_mask_saved;
 127    unsigned min_samples, min_samples_saved;
 128    struct pipe_stencil_ref stencil_ref, stencil_ref_saved;
 129 };
 130
 131
 132 static boolean delete_blend_state(struct cso_context *ctx, void *state)
 133 {
 134    struct cso_blend *cso = (struct cso_blend *)state;
 135
 136    if (ctx->blend == cso->data)
 137       return FALSE;
 138
 139    if (cso->delete_state)
 140       cso->delete_state(cso->context, cso->data);
 141    FREE(state);
 142    return TRUE;
 143 }
 144
 145 static boolean delete_depth_stencil_state(struct cso_context *ctx, void *state)
 146 {
 147    struct cso_depth_stencil_alpha *cso =
 148       (struct cso_depth_stencil_alpha *)state;
 149
 150    if (ctx->depth_stencil == cso->data)
 151       return FALSE;
 152
 153    if (cso->delete_state)
 154       cso->delete_state(cso->context, cso->data);
 155    FREE(state);
 156
 157    return TRUE;
 158 }
 159
 160 static boolean delete_sampler_state(struct cso_context *ctx, void *state)
 161 {
 162    struct cso_sampler *cso = (struct cso_sampler *)state;
 163    if (cso->delete_state)
 164       cso->delete_state(cso->context, cso->data);
 165    FREE(state);
 166    return TRUE;
 167 }
 168
 169 static boolean delete_rasterizer_state(struct cso_context *ctx, void *state)
 170 {
 171    struct cso_rasterizer *cso = (struct cso_rasterizer *)state;
 172
 173    if (ctx->rasterizer == cso->data)
 174       return FALSE;
 175    if (cso->delete_state)
 176       cso->delete_state(cso->context, cso->data);
 177    FREE(state);
 178    return TRUE;
 179 }
 180
 181 static boolean delete_vertex_elements(struct cso_context *ctx,
 182                                       void *state)
 183 {
 184    struct cso_velements *cso = (struct cso_velements *)state;
 185
 186    if (ctx->velements == cso->data)
 187       return FALSE;
 188
 189    if (cso->delete_state)
 190       cso->delete_state(cso->context, cso->data);
 191    FREE(state);
 192    return TRUE;
 193 }
 194
 195
 196 static inline boolean delete_cso(struct cso_context *ctx,
 197                                  void *state, enum cso_cache_type type)
 198 {
 199    switch (type) {
 200    case CSO_BLEND:
 201       return delete_blend_state(ctx, state);
 202    case CSO_SAMPLER:
 203       return delete_sampler_state(ctx, state);
 204    case CSO_DEPTH_STENCIL_ALPHA:
 205       return delete_depth_stencil_state(ctx, state);
 206    case CSO_RASTERIZER:
 207       return delete_rasterizer_state(ctx, state);
 208    case CSO_VELEMENTS:
 209       return delete_vertex_elements(ctx, state);
 210    default:
 211       assert(0);
 212       FREE(state);
 213    }
 214    return FALSE;
 215 }
 216
 217 static inline void
 218 sanitize_hash(struct cso_hash *hash, enum cso_cache_type type,
 219               int max_size, void *user_data)
 220 {
 221    struct cso_context *ctx = (struct cso_context *)user_data;
 222    /* if we're approach the maximum size, remove fourth of the entries
 223     * otherwise every subsequent call will go through the same */
 224    int hash_size = cso_hash_size(hash);
 225    int max_entries = (max_size > hash_size) ? max_size : hash_size;
 226    int to_remove =  (max_size < max_entries) * max_entries/4;
 227    struct cso_hash_iter iter;
 228    struct cso_sampler **samplers_to_restore = NULL;
 229    unsigned to_restore = 0;
 230
 231    if (hash_size > max_size)
 232       to_remove += hash_size - max_size;
 233
 234    if (to_remove == 0)
 235       return;
 236
 237    if (type == CSO_SAMPLER) {
 238       int i, j;
 239
 240       samplers_to_restore = MALLOC(PIPE_SHADER_TYPES * PIPE_MAX_SAMPLERS *
 241                                    sizeof(*samplers_to_restore));
 242
 243       /* Temporarily remove currently bound sampler states from the hash
 244        * table, to prevent them from being deleted
 245        */
 246       for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 247          for (j = 0; j < PIPE_MAX_SAMPLERS; j++) {
 248             struct cso_sampler *sampler = ctx->samplers[i].cso_samplers[j];
 249
 250             if (sampler && cso_hash_take(hash, sampler->hash_key))
 251                samplers_to_restore[to_restore++] = sampler;
 252          }
 253       }
 254    }
 255
 256    iter = cso_hash_first_node(hash);
 257    while (to_remove) {
 258       /*remove elements until we're good */
 259       /*fixme: currently we pick the nodes to remove at random*/
 260       void *cso = cso_hash_iter_data(iter);
 261
 262       if (!cso)
 263          break;
 264
 265       if (delete_cso(ctx, cso, type)) {
 266          iter = cso_hash_erase(hash, iter);
 267          --to_remove;
 268       } else
 269          iter = cso_hash_iter_next(iter);
 270    }
 271
 272    if (type == CSO_SAMPLER) {
 273       /* Put currently bound sampler states back into the hash table */
 274       while (to_restore--) {
 275          struct cso_sampler *sampler = samplers_to_restore[to_restore];
 276
 277          cso_hash_insert(hash, sampler->hash_key, sampler);
 278       }
 279
 280       FREE(samplers_to_restore);
 281    }
 282 }
 283
 284 static void cso_init_vbuf(struct cso_context *cso, unsigned flags)
 285 {
 286    struct u_vbuf_caps caps;
 287
 288    /* Install u_vbuf if there is anything unsupported. */
 289    if (u_vbuf_get_caps(cso->pipe->screen, &caps, flags)) {
 290       cso->vbuf = u_vbuf_create(cso->pipe, &caps,
 291                                 cso->aux_vertex_buffer_index);
 292    }
 293 }
 294
 295 struct cso_context *
 296 cso_create_context(struct pipe_context *pipe, unsigned u_vbuf_flags)
 297 {
 298    struct cso_context *ctx = CALLOC_STRUCT(cso_context);
 299    if (!ctx)
 300       return NULL;
 301
 302    ctx->cache = cso_cache_create();
 303    if (ctx->cache == NULL)
 304       goto out;
 305    cso_cache_set_sanitize_callback(ctx->cache,
 306                                    sanitize_hash,
 307                                    ctx);
 308
 309    ctx->pipe = pipe;
 310    ctx->sample_mask = ~0;
 311
 312    ctx->aux_vertex_buffer_index = 0; /* 0 for now */
 313
 314    cso_init_vbuf(ctx, u_vbuf_flags);
 315
 316    /* Enable for testing: */
 317    if (0) cso_set_maximum_cache_size( ctx->cache, 4 );
 318
 319    if (pipe->screen->get_shader_param(pipe->screen, PIPE_SHADER_GEOMETRY,
 320                                 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
 321       ctx->has_geometry_shader = TRUE;
 322    }
 323    if (pipe->screen->get_shader_param(pipe->screen, PIPE_SHADER_TESS_CTRL,
 324                                 PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
 325       ctx->has_tessellation = TRUE;
 326    }
 327    if (pipe->screen->get_shader_param(pipe->screen, PIPE_SHADER_COMPUTE,
 328                                       PIPE_SHADER_CAP_MAX_INSTRUCTIONS) > 0) {
 329       int supported_irs =
 330          pipe->screen->get_shader_param(pipe->screen, PIPE_SHADER_COMPUTE,
 331                                         PIPE_SHADER_CAP_SUPPORTED_IRS);
 332       if (supported_irs & (1 << PIPE_SHADER_IR_TGSI)) {
 333          ctx->has_compute_shader = TRUE;
 334       }
 335    }
 336    if (pipe->screen->get_param(pipe->screen,
 337                                PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS) != 0) {
 338       ctx->has_streamout = TRUE;
 339    }
 340
 341    ctx->max_sampler_seen = -1;
 342    return ctx;
 343
 344 out:
 345    cso_destroy_context( ctx );
 346    return NULL;
 347 }
 348
 349 /**
 350  * Free the CSO context.
 351  */
 352 void cso_destroy_context( struct cso_context *ctx )
 353 {
 354    unsigned i;
 355
 356    if (ctx->pipe) {
 357       ctx->pipe->bind_blend_state( ctx->pipe, NULL );
 358       ctx->pipe->bind_rasterizer_state( ctx->pipe, NULL );
 359
 360       {
 361          static struct pipe_sampler_view *views[PIPE_MAX_SHADER_SAMPLER_VIEWS] = { NULL };
 362          static void *zeros[PIPE_MAX_SAMPLERS] = { NULL };
 363          struct pipe_screen *scr = ctx->pipe->screen;
 364          enum pipe_shader_type sh;
 365          for (sh = 0; sh < PIPE_SHADER_TYPES; sh++) {
 366             int maxsam = scr->get_shader_param(scr, sh,
 367                                                PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS);
 368             int maxview = scr->get_shader_param(scr, sh,
 369                                                 PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS);
 370             assert(maxsam <= PIPE_MAX_SAMPLERS);
 371             assert(maxview <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 372             if (maxsam > 0) {
 373                ctx->pipe->bind_sampler_states(ctx->pipe, sh, 0, maxsam, zeros);
 374             }
 375             if (maxview > 0) {
 376                ctx->pipe->set_sampler_views(ctx->pipe, sh, 0, maxview, views);
 377             }
 378          }
 379       }
 380
 381       ctx->pipe->bind_depth_stencil_alpha_state( ctx->pipe, NULL );
 382       ctx->pipe->bind_fs_state( ctx->pipe, NULL );
 383       ctx->pipe->set_constant_buffer(ctx->pipe, PIPE_SHADER_FRAGMENT, 0, NULL);
 384       ctx->pipe->bind_vs_state( ctx->pipe, NULL );
 385       ctx->pipe->set_constant_buffer(ctx->pipe, PIPE_SHADER_VERTEX, 0, NULL);
 386       if (ctx->has_geometry_shader) {
 387          ctx->pipe->bind_gs_state(ctx->pipe, NULL);
 388          ctx->pipe->set_constant_buffer(ctx->pipe, PIPE_SHADER_GEOMETRY, 0, NULL);
 389       }
 390       if (ctx->has_tessellation) {
 391          ctx->pipe->bind_tcs_state(ctx->pipe, NULL);
 392          ctx->pipe->set_constant_buffer(ctx->pipe, PIPE_SHADER_TESS_CTRL, 0, NULL);
 393          ctx->pipe->bind_tes_state(ctx->pipe, NULL);
 394          ctx->pipe->set_constant_buffer(ctx->pipe, PIPE_SHADER_TESS_EVAL, 0, NULL);
 395       }
 396       if (ctx->has_compute_shader) {
 397          ctx->pipe->bind_compute_state(ctx->pipe, NULL);
 398          ctx->pipe->set_constant_buffer(ctx->pipe, PIPE_SHADER_COMPUTE, 0, NULL);
 399       }
 400       ctx->pipe->bind_vertex_elements_state( ctx->pipe, NULL );
 401
 402       if (ctx->has_streamout)
 403          ctx->pipe->set_stream_output_targets(ctx->pipe, 0, NULL, NULL);
 404    }
 405
 406    for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
 407       pipe_sampler_view_reference(&ctx->fragment_views[i], NULL);
 408       pipe_sampler_view_reference(&ctx->fragment_views_saved[i], NULL);
 409    }
 410
 411    util_unreference_framebuffer_state(&ctx->fb);
 412    util_unreference_framebuffer_state(&ctx->fb_saved);
 413
 414    pipe_vertex_buffer_unreference(&ctx->aux_vertex_buffer_current);
 415    pipe_vertex_buffer_unreference(&ctx->aux_vertex_buffer_saved);
 416
 417    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 418       pipe_resource_reference(&ctx->aux_constbuf_current[i].buffer, NULL);
 419       pipe_resource_reference(&ctx->aux_constbuf_saved[i].buffer, NULL);
 420    }
 421
 422    pipe_resource_reference(&ctx->fragment_image0_current.resource, NULL);
 423    pipe_resource_reference(&ctx->fragment_image0_saved.resource, NULL);
 424
 425    for (i = 0; i < PIPE_MAX_SO_BUFFERS; i++) {
 426       pipe_so_target_reference(&ctx->so_targets[i], NULL);
 427       pipe_so_target_reference(&ctx->so_targets_saved[i], NULL);
 428    }
 429
 430    if (ctx->cache) {
 431       cso_cache_delete( ctx->cache );
 432       ctx->cache = NULL;
 433    }
 434
 435    if (ctx->vbuf)
 436       u_vbuf_destroy(ctx->vbuf);
 437    FREE( ctx );
 438 }
 439
 440
 441 /* Those function will either find the state of the given template
 442  * in the cache or they will create a new state from the given
 443  * template, insert it in the cache and return it.
 444  */
 445
 446 /*
 447  * If the driver returns 0 from the create method then they will assign
 448  * the data member of the cso to be the template itself.
 449  */
 450
 451 enum pipe_error cso_set_blend(struct cso_context *ctx,
 452                               const struct pipe_blend_state *templ)
 453 {
 454    unsigned key_size, hash_key;
 455    struct cso_hash_iter iter;
 456    void *handle;
 457
 458    key_size = templ->independent_blend_enable ?
 459       sizeof(struct pipe_blend_state) :
 460       (char *)&(templ->rt[1]) - (char *)templ;
 461    hash_key = cso_construct_key((void*)templ, key_size);
 462    iter = cso_find_state_template(ctx->cache, hash_key, CSO_BLEND,
 463                                   (void*)templ, key_size);
 464
 465    if (cso_hash_iter_is_null(iter)) {
 466       struct cso_blend *cso = MALLOC(sizeof(struct cso_blend));
 467       if (!cso)
 468          return PIPE_ERROR_OUT_OF_MEMORY;
 469
 470       memset(&cso->state, 0, sizeof cso->state);
 471       memcpy(&cso->state, templ, key_size);
 472       cso->data = ctx->pipe->create_blend_state(ctx->pipe, &cso->state);
 473       cso->delete_state = (cso_state_callback)ctx->pipe->delete_blend_state;
 474       cso->context = ctx->pipe;
 475
 476       iter = cso_insert_state(ctx->cache, hash_key, CSO_BLEND, cso);
 477       if (cso_hash_iter_is_null(iter)) {
 478          FREE(cso);
 479          return PIPE_ERROR_OUT_OF_MEMORY;
 480       }
 481
 482       handle = cso->data;
 483    }
 484    else {
 485       handle = ((struct cso_blend *)cso_hash_iter_data(iter))->data;
 486    }
 487
 488    if (ctx->blend != handle) {
 489       ctx->blend = handle;
 490       ctx->pipe->bind_blend_state(ctx->pipe, handle);
 491    }
 492    return PIPE_OK;
 493 }
 494
 495 static void
 496 cso_save_blend(struct cso_context *ctx)
 497 {
 498    assert(!ctx->blend_saved);
 499    ctx->blend_saved = ctx->blend;
 500 }
 501
 502 static void
 503 cso_restore_blend(struct cso_context *ctx)
 504 {
 505    if (ctx->blend != ctx->blend_saved) {
 506       ctx->blend = ctx->blend_saved;
 507       ctx->pipe->bind_blend_state(ctx->pipe, ctx->blend_saved);
 508    }
 509    ctx->blend_saved = NULL;
 510 }
 511
 512
 513
 514 enum pipe_error
 515 cso_set_depth_stencil_alpha(struct cso_context *ctx,
 516                             const struct pipe_depth_stencil_alpha_state *templ)
 517 {
 518    unsigned key_size = sizeof(struct pipe_depth_stencil_alpha_state);
 519    unsigned hash_key = cso_construct_key((void*)templ, key_size);
 520    struct cso_hash_iter iter = cso_find_state_template(ctx->cache,
 521                                                        hash_key,
 522                                                        CSO_DEPTH_STENCIL_ALPHA,
 523                                                        (void*)templ, key_size);
 524    void *handle;
 525
 526    if (cso_hash_iter_is_null(iter)) {
 527       struct cso_depth_stencil_alpha *cso =
 528          MALLOC(sizeof(struct cso_depth_stencil_alpha));
 529       if (!cso)
 530          return PIPE_ERROR_OUT_OF_MEMORY;
 531
 532       memcpy(&cso->state, templ, sizeof(*templ));
 533       cso->data = ctx->pipe->create_depth_stencil_alpha_state(ctx->pipe,
 534                                                               &cso->state);
 535       cso->delete_state =
 536          (cso_state_callback)ctx->pipe->delete_depth_stencil_alpha_state;
 537       cso->context = ctx->pipe;
 538
 539       iter = cso_insert_state(ctx->cache, hash_key,
 540                               CSO_DEPTH_STENCIL_ALPHA, cso);
 541       if (cso_hash_iter_is_null(iter)) {
 542          FREE(cso);
 543          return PIPE_ERROR_OUT_OF_MEMORY;
 544       }
 545
 546       handle = cso->data;
 547    }
 548    else {
 549       handle = ((struct cso_depth_stencil_alpha *)
 550                 cso_hash_iter_data(iter))->data;
 551    }
 552
 553    if (ctx->depth_stencil != handle) {
 554       ctx->depth_stencil = handle;
 555       ctx->pipe->bind_depth_stencil_alpha_state(ctx->pipe, handle);
 556    }
 557    return PIPE_OK;
 558 }
 559
 560 static void
 561 cso_save_depth_stencil_alpha(struct cso_context *ctx)
 562 {
 563    assert(!ctx->depth_stencil_saved);
 564    ctx->depth_stencil_saved = ctx->depth_stencil;
 565 }
 566
 567 static void
 568 cso_restore_depth_stencil_alpha(struct cso_context *ctx)
 569 {
 570    if (ctx->depth_stencil != ctx->depth_stencil_saved) {
 571       ctx->depth_stencil = ctx->depth_stencil_saved;
 572       ctx->pipe->bind_depth_stencil_alpha_state(ctx->pipe,
 573                                                 ctx->depth_stencil_saved);
 574    }
 575    ctx->depth_stencil_saved = NULL;
 576 }
 577
 578
 579
 580 enum pipe_error cso_set_rasterizer(struct cso_context *ctx,
 581                                    const struct pipe_rasterizer_state *templ)
 582 {
 583    unsigned key_size = sizeof(struct pipe_rasterizer_state);
 584    unsigned hash_key = cso_construct_key((void*)templ, key_size);
 585    struct cso_hash_iter iter = cso_find_state_template(ctx->cache,
 586                                                        hash_key,
 587                                                        CSO_RASTERIZER,
 588                                                        (void*)templ, key_size);
 589    void *handle = NULL;
 590
 591    if (cso_hash_iter_is_null(iter)) {
 592       struct cso_rasterizer *cso = MALLOC(sizeof(struct cso_rasterizer));
 593       if (!cso)
 594          return PIPE_ERROR_OUT_OF_MEMORY;
 595
 596       memcpy(&cso->state, templ, sizeof(*templ));
 597       cso->data = ctx->pipe->create_rasterizer_state(ctx->pipe, &cso->state);
 598       cso->delete_state =
 599          (cso_state_callback)ctx->pipe->delete_rasterizer_state;
 600       cso->context = ctx->pipe;
 601
 602       iter = cso_insert_state(ctx->cache, hash_key, CSO_RASTERIZER, cso);
 603       if (cso_hash_iter_is_null(iter)) {
 604          FREE(cso);
 605          return PIPE_ERROR_OUT_OF_MEMORY;
 606       }
 607
 608       handle = cso->data;
 609    }
 610    else {
 611       handle = ((struct cso_rasterizer *)cso_hash_iter_data(iter))->data;
 612    }
 613
 614    if (ctx->rasterizer != handle) {
 615       ctx->rasterizer = handle;
 616       ctx->pipe->bind_rasterizer_state(ctx->pipe, handle);
 617    }
 618    return PIPE_OK;
 619 }
 620
 621 static void
 622 cso_save_rasterizer(struct cso_context *ctx)
 623 {
 624    assert(!ctx->rasterizer_saved);
 625    ctx->rasterizer_saved = ctx->rasterizer;
 626 }
 627
 628 static void
 629 cso_restore_rasterizer(struct cso_context *ctx)
 630 {
 631    if (ctx->rasterizer != ctx->rasterizer_saved) {
 632       ctx->rasterizer = ctx->rasterizer_saved;
 633       ctx->pipe->bind_rasterizer_state(ctx->pipe, ctx->rasterizer_saved);
 634    }
 635    ctx->rasterizer_saved = NULL;
 636 }
 637
 638
 639 void cso_set_fragment_shader_handle(struct cso_context *ctx, void *handle )
 640 {
 641    if (ctx->fragment_shader != handle) {
 642       ctx->fragment_shader = handle;
 643       ctx->pipe->bind_fs_state(ctx->pipe, handle);
 644    }
 645 }
 646
 647 void cso_delete_fragment_shader(struct cso_context *ctx, void *handle )
 648 {
 649    if (handle == ctx->fragment_shader) {
 650       /* unbind before deleting */
 651       ctx->pipe->bind_fs_state(ctx->pipe, NULL);
 652       ctx->fragment_shader = NULL;
 653    }
 654    ctx->pipe->delete_fs_state(ctx->pipe, handle);
 655 }
 656
 657 static void
 658 cso_save_fragment_shader(struct cso_context *ctx)
 659 {
 660    assert(!ctx->fragment_shader_saved);
 661    ctx->fragment_shader_saved = ctx->fragment_shader;
 662 }
 663
 664 static void
 665 cso_restore_fragment_shader(struct cso_context *ctx)
 666 {
 667    if (ctx->fragment_shader_saved != ctx->fragment_shader) {
 668       ctx->pipe->bind_fs_state(ctx->pipe, ctx->fragment_shader_saved);
 669       ctx->fragment_shader = ctx->fragment_shader_saved;
 670    }
 671    ctx->fragment_shader_saved = NULL;
 672 }
 673
 674
 675 void cso_set_vertex_shader_handle(struct cso_context *ctx, void *handle)
 676 {
 677    if (ctx->vertex_shader != handle) {
 678       ctx->vertex_shader = handle;
 679       ctx->pipe->bind_vs_state(ctx->pipe, handle);
 680    }
 681 }
 682
 683 void cso_delete_vertex_shader(struct cso_context *ctx, void *handle )
 684 {
 685    if (handle == ctx->vertex_shader) {
 686       /* unbind before deleting */
 687       ctx->pipe->bind_vs_state(ctx->pipe, NULL);
 688       ctx->vertex_shader = NULL;
 689    }
 690    ctx->pipe->delete_vs_state(ctx->pipe, handle);
 691 }
 692
 693 static void
 694 cso_save_vertex_shader(struct cso_context *ctx)
 695 {
 696    assert(!ctx->vertex_shader_saved);
 697    ctx->vertex_shader_saved = ctx->vertex_shader;
 698 }
 699
 700 static void
 701 cso_restore_vertex_shader(struct cso_context *ctx)
 702 {
 703    if (ctx->vertex_shader_saved != ctx->vertex_shader) {
 704       ctx->pipe->bind_vs_state(ctx->pipe, ctx->vertex_shader_saved);
 705       ctx->vertex_shader = ctx->vertex_shader_saved;
 706    }
 707    ctx->vertex_shader_saved = NULL;
 708 }
 709
 710
 711 void cso_set_framebuffer(struct cso_context *ctx,
 712                          const struct pipe_framebuffer_state *fb)
 713 {
 714    if (memcmp(&ctx->fb, fb, sizeof(*fb)) != 0) {
 715       util_copy_framebuffer_state(&ctx->fb, fb);
 716       ctx->pipe->set_framebuffer_state(ctx->pipe, fb);
 717    }
 718 }
 719
 720 static void
 721 cso_save_framebuffer(struct cso_context *ctx)
 722 {
 723    util_copy_framebuffer_state(&ctx->fb_saved, &ctx->fb);
 724 }
 725
 726 static void
 727 cso_restore_framebuffer(struct cso_context *ctx)
 728 {
 729    if (memcmp(&ctx->fb, &ctx->fb_saved, sizeof(ctx->fb))) {
 730       util_copy_framebuffer_state(&ctx->fb, &ctx->fb_saved);
 731       ctx->pipe->set_framebuffer_state(ctx->pipe, &ctx->fb);
 732       util_unreference_framebuffer_state(&ctx->fb_saved);
 733    }
 734 }
 735
 736
 737 void cso_set_viewport(struct cso_context *ctx,
 738                       const struct pipe_viewport_state *vp)
 739 {
 740    if (memcmp(&ctx->vp, vp, sizeof(*vp))) {
 741       ctx->vp = *vp;
 742       ctx->pipe->set_viewport_states(ctx->pipe, 0, 1, vp);
 743    }
 744 }
 745
 746 /**
 747  * Setup viewport state for given width and height (position is always (0,0)).
 748  * Invert the Y axis if 'invert' is true.
 749  */
 750 void
 751 cso_set_viewport_dims(struct cso_context *ctx,
 752                       float width, float height, boolean invert)
 753 {
 754    struct pipe_viewport_state vp;
 755    vp.scale[0] = width * 0.5f;
 756    vp.scale[1] = height * (invert ? -0.5f : 0.5f);
 757    vp.scale[2] = 0.5f;
 758    vp.translate[0] = 0.5f * width;
 759    vp.translate[1] = 0.5f * height;
 760    vp.translate[2] = 0.5f;
 761    cso_set_viewport(ctx, &vp);
 762 }
 763
 764 static void
 765 cso_save_viewport(struct cso_context *ctx)
 766 {
 767    ctx->vp_saved = ctx->vp;
 768 }
 769
 770
 771 static void
 772 cso_restore_viewport(struct cso_context *ctx)
 773 {
 774    if (memcmp(&ctx->vp, &ctx->vp_saved, sizeof(ctx->vp))) {
 775       ctx->vp = ctx->vp_saved;
 776       ctx->pipe->set_viewport_states(ctx->pipe, 0, 1, &ctx->vp);
 777    }
 778 }
 779
 780
 781 void cso_set_blend_color(struct cso_context *ctx,
 782                          const struct pipe_blend_color *bc)
 783 {
 784    if (memcmp(&ctx->blend_color, bc, sizeof(ctx->blend_color))) {
 785       ctx->blend_color = *bc;
 786       ctx->pipe->set_blend_color(ctx->pipe, bc);
 787    }
 788 }
 789
 790 void cso_set_sample_mask(struct cso_context *ctx, unsigned sample_mask)
 791 {
 792    if (ctx->sample_mask != sample_mask) {
 793       ctx->sample_mask = sample_mask;
 794       ctx->pipe->set_sample_mask(ctx->pipe, sample_mask);
 795    }
 796 }
 797
 798 static void
 799 cso_save_sample_mask(struct cso_context *ctx)
 800 {
 801    ctx->sample_mask_saved = ctx->sample_mask;
 802 }
 803
 804 static void
 805 cso_restore_sample_mask(struct cso_context *ctx)
 806 {
 807    cso_set_sample_mask(ctx, ctx->sample_mask_saved);
 808 }
 809
 810 void cso_set_min_samples(struct cso_context *ctx, unsigned min_samples)
 811 {
 812    if (ctx->min_samples != min_samples && ctx->pipe->set_min_samples) {
 813       ctx->min_samples = min_samples;
 814       ctx->pipe->set_min_samples(ctx->pipe, min_samples);
 815    }
 816 }
 817
 818 static void
 819 cso_save_min_samples(struct cso_context *ctx)
 820 {
 821    ctx->min_samples_saved = ctx->min_samples;
 822 }
 823
 824 static void
 825 cso_restore_min_samples(struct cso_context *ctx)
 826 {
 827    cso_set_min_samples(ctx, ctx->min_samples_saved);
 828 }
 829
 830 void cso_set_stencil_ref(struct cso_context *ctx,
 831                          const struct pipe_stencil_ref *sr)
 832 {
 833    if (memcmp(&ctx->stencil_ref, sr, sizeof(ctx->stencil_ref))) {
 834       ctx->stencil_ref = *sr;
 835       ctx->pipe->set_stencil_ref(ctx->pipe, sr);
 836    }
 837 }
 838
 839 static void
 840 cso_save_stencil_ref(struct cso_context *ctx)
 841 {
 842    ctx->stencil_ref_saved = ctx->stencil_ref;
 843 }
 844
 845
 846 static void
 847 cso_restore_stencil_ref(struct cso_context *ctx)
 848 {
 849    if (memcmp(&ctx->stencil_ref, &ctx->stencil_ref_saved,
 850               sizeof(ctx->stencil_ref))) {
 851       ctx->stencil_ref = ctx->stencil_ref_saved;
 852       ctx->pipe->set_stencil_ref(ctx->pipe, &ctx->stencil_ref);
 853    }
 854 }
 855
 856 void cso_set_render_condition(struct cso_context *ctx,
 857                               struct pipe_query *query,
 858                               boolean condition,
 859                               enum pipe_render_cond_flag mode)
 860 {
 861    struct pipe_context *pipe = ctx->pipe;
 862
 863    if (ctx->render_condition != query ||
 864        ctx->render_condition_mode != mode ||
 865        ctx->render_condition_cond != condition) {
 866       pipe->render_condition(pipe, query, condition, mode);
 867       ctx->render_condition = query;
 868       ctx->render_condition_cond = condition;
 869       ctx->render_condition_mode = mode;
 870    }
 871 }
 872
 873 static void
 874 cso_save_render_condition(struct cso_context *ctx)
 875 {
 876    ctx->render_condition_saved = ctx->render_condition;
 877    ctx->render_condition_cond_saved = ctx->render_condition_cond;
 878    ctx->render_condition_mode_saved = ctx->render_condition_mode;
 879 }
 880
 881 static void
 882 cso_restore_render_condition(struct cso_context *ctx)
 883 {
 884    cso_set_render_condition(ctx, ctx->render_condition_saved,
 885                             ctx->render_condition_cond_saved,
 886                             ctx->render_condition_mode_saved);
 887 }
 888
 889 void cso_set_geometry_shader_handle(struct cso_context *ctx, void *handle)
 890 {
 891    assert(ctx->has_geometry_shader || !handle);
 892
 893    if (ctx->has_geometry_shader && ctx->geometry_shader != handle) {
 894       ctx->geometry_shader = handle;
 895       ctx->pipe->bind_gs_state(ctx->pipe, handle);
 896    }
 897 }
 898
 899 void cso_delete_geometry_shader(struct cso_context *ctx, void *handle)
 900 {
 901    if (handle == ctx->geometry_shader) {
 902       /* unbind before deleting */
 903       ctx->pipe->bind_gs_state(ctx->pipe, NULL);
 904       ctx->geometry_shader = NULL;
 905    }
 906    ctx->pipe->delete_gs_state(ctx->pipe, handle);
 907 }
 908
 909 static void
 910 cso_save_geometry_shader(struct cso_context *ctx)
 911 {
 912    if (!ctx->has_geometry_shader) {
 913       return;
 914    }
 915
 916    assert(!ctx->geometry_shader_saved);
 917    ctx->geometry_shader_saved = ctx->geometry_shader;
 918 }
 919
 920 static void
 921 cso_restore_geometry_shader(struct cso_context *ctx)
 922 {
 923    if (!ctx->has_geometry_shader) {
 924       return;
 925    }
 926
 927    if (ctx->geometry_shader_saved != ctx->geometry_shader) {
 928       ctx->pipe->bind_gs_state(ctx->pipe, ctx->geometry_shader_saved);
 929       ctx->geometry_shader = ctx->geometry_shader_saved;
 930    }
 931    ctx->geometry_shader_saved = NULL;
 932 }
 933
 934 void cso_set_tessctrl_shader_handle(struct cso_context *ctx, void *handle)
 935 {
 936    assert(ctx->has_tessellation || !handle);
 937
 938    if (ctx->has_tessellation && ctx->tessctrl_shader != handle) {
 939       ctx->tessctrl_shader = handle;
 940       ctx->pipe->bind_tcs_state(ctx->pipe, handle);
 941    }
 942 }
 943
 944 void cso_delete_tessctrl_shader(struct cso_context *ctx, void *handle)
 945 {
 946    if (handle == ctx->tessctrl_shader) {
 947       /* unbind before deleting */
 948       ctx->pipe->bind_tcs_state(ctx->pipe, NULL);
 949       ctx->tessctrl_shader = NULL;
 950    }
 951    ctx->pipe->delete_tcs_state(ctx->pipe, handle);
 952 }
 953
 954 static void
 955 cso_save_tessctrl_shader(struct cso_context *ctx)
 956 {
 957    if (!ctx->has_tessellation) {
 958       return;
 959    }
 960
 961    assert(!ctx->tessctrl_shader_saved);
 962    ctx->tessctrl_shader_saved = ctx->tessctrl_shader;
 963 }
 964
 965 static void
 966 cso_restore_tessctrl_shader(struct cso_context *ctx)
 967 {
 968    if (!ctx->has_tessellation) {
 969       return;
 970    }
 971
 972    if (ctx->tessctrl_shader_saved != ctx->tessctrl_shader) {
 973       ctx->pipe->bind_tcs_state(ctx->pipe, ctx->tessctrl_shader_saved);
 974       ctx->tessctrl_shader = ctx->tessctrl_shader_saved;
 975    }
 976    ctx->tessctrl_shader_saved = NULL;
 977 }
 978
 979 void cso_set_tesseval_shader_handle(struct cso_context *ctx, void *handle)
 980 {
 981    assert(ctx->has_tessellation || !handle);
 982
 983    if (ctx->has_tessellation && ctx->tesseval_shader != handle) {
 984       ctx->tesseval_shader = handle;
 985       ctx->pipe->bind_tes_state(ctx->pipe, handle);
 986    }
 987 }
 988
 989 void cso_delete_tesseval_shader(struct cso_context *ctx, void *handle)
 990 {
 991    if (handle == ctx->tesseval_shader) {
 992       /* unbind before deleting */
 993       ctx->pipe->bind_tes_state(ctx->pipe, NULL);
 994       ctx->tesseval_shader = NULL;
 995    }
 996    ctx->pipe->delete_tes_state(ctx->pipe, handle);
 997 }
 998
 999 static void
1000 cso_save_tesseval_shader(struct cso_context *ctx)
1001 {
1002    if (!ctx->has_tessellation) {
1003       return;
1004    }
1005
1006    assert(!ctx->tesseval_shader_saved);
1007    ctx->tesseval_shader_saved = ctx->tesseval_shader;
1008 }
1009
1010 static void
1011 cso_restore_tesseval_shader(struct cso_context *ctx)
1012 {
1013    if (!ctx->has_tessellation) {
1014       return;
1015    }
1016
1017    if (ctx->tesseval_shader_saved != ctx->tesseval_shader) {
1018       ctx->pipe->bind_tes_state(ctx->pipe, ctx->tesseval_shader_saved);
1019       ctx->tesseval_shader = ctx->tesseval_shader_saved;
1020    }
1021    ctx->tesseval_shader_saved = NULL;
1022 }
1023
1024 void cso_set_compute_shader_handle(struct cso_context *ctx, void *handle)
1025 {
1026    assert(ctx->has_compute_shader || !handle);
1027
1028    if (ctx->has_compute_shader && ctx->compute_shader != handle) {
1029       ctx->compute_shader = handle;
1030       ctx->pipe->bind_compute_state(ctx->pipe, handle);
1031    }
1032 }
1033
1034 void cso_delete_compute_shader(struct cso_context *ctx, void *handle)
1035 {
1036    if (handle == ctx->compute_shader) {
1037       /* unbind before deleting */
1038       ctx->pipe->bind_compute_state(ctx->pipe, NULL);
1039       ctx->compute_shader = NULL;
1040    }
1041    ctx->pipe->delete_compute_state(ctx->pipe, handle);
1042 }
1043
1044 enum pipe_error
1045 cso_set_vertex_elements(struct cso_context *ctx,
1046                         unsigned count,
1047                         const struct pipe_vertex_element *states)
1048 {
1049    struct u_vbuf *vbuf = ctx->vbuf;
1050    unsigned key_size, hash_key;
1051    struct cso_hash_iter iter;
1052    void *handle;
1053    struct cso_velems_state velems_state;
1054
1055    if (vbuf) {
1056       u_vbuf_set_vertex_elements(vbuf, count, states);
1057       return PIPE_OK;
1058    }
1059
1060    /* Need to include the count into the stored state data too.
1061     * Otherwise first few count pipe_vertex_elements could be identical
1062     * even if count is different, and there's no guarantee the hash would
1063     * be different in that case neither.
1064     */
1065    key_size = sizeof(struct pipe_vertex_element) * count + sizeof(unsigned);
1066    velems_state.count = count;
1067    memcpy(velems_state.velems, states,
1068           sizeof(struct pipe_vertex_element) * count);
1069    hash_key = cso_construct_key((void*)&velems_state, key_size);
1070    iter = cso_find_state_template(ctx->cache, hash_key, CSO_VELEMENTS,
1071                                   (void*)&velems_state, key_size);
1072
1073    if (cso_hash_iter_is_null(iter)) {
1074       struct cso_velements *cso = MALLOC(sizeof(struct cso_velements));
1075       if (!cso)
1076          return PIPE_ERROR_OUT_OF_MEMORY;
1077
1078       memcpy(&cso->state, &velems_state, key_size);
1079       cso->data = ctx->pipe->create_vertex_elements_state(ctx->pipe, count,
1080                                                       &cso->state.velems[0]);
1081       cso->delete_state =
1082          (cso_state_callback) ctx->pipe->delete_vertex_elements_state;
1083       cso->context = ctx->pipe;
1084
1085       iter = cso_insert_state(ctx->cache, hash_key, CSO_VELEMENTS, cso);
1086       if (cso_hash_iter_is_null(iter)) {
1087          FREE(cso);
1088          return PIPE_ERROR_OUT_OF_MEMORY;
1089       }
1090
1091       handle = cso->data;
1092    }
1093    else {
1094       handle = ((struct cso_velements *)cso_hash_iter_data(iter))->data;
1095    }
1096
1097    if (ctx->velements != handle) {
1098       ctx->velements = handle;
1099       ctx->pipe->bind_vertex_elements_state(ctx->pipe, handle);
1100    }
1101    return PIPE_OK;
1102 }
1103
1104 static void
1105 cso_save_vertex_elements(struct cso_context *ctx)
1106 {
1107    struct u_vbuf *vbuf = ctx->vbuf;
1108
1109    if (vbuf) {
1110       u_vbuf_save_vertex_elements(vbuf);
1111       return;
1112    }
1113
1114    assert(!ctx->velements_saved);
1115    ctx->velements_saved = ctx->velements;
1116 }
1117
1118 static void
1119 cso_restore_vertex_elements(struct cso_context *ctx)
1120 {
1121    struct u_vbuf *vbuf = ctx->vbuf;
1122
1123    if (vbuf) {
1124       u_vbuf_restore_vertex_elements(vbuf);
1125       return;
1126    }
1127
1128    if (ctx->velements != ctx->velements_saved) {
1129       ctx->velements = ctx->velements_saved;
1130       ctx->pipe->bind_vertex_elements_state(ctx->pipe, ctx->velements_saved);
1131    }
1132    ctx->velements_saved = NULL;
1133 }
1134
1135 /* vertex buffers */
1136
1137 void cso_set_vertex_buffers(struct cso_context *ctx,
1138                             unsigned start_slot, unsigned count,
1139                             const struct pipe_vertex_buffer *buffers)
1140 {
1141    struct u_vbuf *vbuf = ctx->vbuf;
1142
1143    if (vbuf) {
1144       u_vbuf_set_vertex_buffers(vbuf, start_slot, count, buffers);
1145       return;
1146    }
1147
1148    /* Save what's in the auxiliary slot, so that we can save and restore it
1149     * for meta ops. */
1150    if (start_slot <= ctx->aux_vertex_buffer_index &&
1151        start_slot+count > ctx->aux_vertex_buffer_index) {
1152       if (buffers) {
1153          const struct pipe_vertex_buffer *vb =
1154                buffers + (ctx->aux_vertex_buffer_index - start_slot);
1155
1156          pipe_vertex_buffer_reference(&ctx->aux_vertex_buffer_current, vb);
1157       } else {
1158          pipe_vertex_buffer_unreference(&ctx->aux_vertex_buffer_current);
1159       }
1160    }
1161
1162    ctx->pipe->set_vertex_buffers(ctx->pipe, start_slot, count, buffers);
1163 }
1164
1165 static void
1166 cso_save_aux_vertex_buffer_slot(struct cso_context *ctx)
1167 {
1168    struct u_vbuf *vbuf = ctx->vbuf;
1169
1170    if (vbuf) {
1171       u_vbuf_save_aux_vertex_buffer_slot(vbuf);
1172       return;
1173    }
1174
1175    pipe_vertex_buffer_reference(&ctx->aux_vertex_buffer_saved,
1176                                 &ctx->aux_vertex_buffer_current);
1177 }
1178
1179 static void
1180 cso_restore_aux_vertex_buffer_slot(struct cso_context *ctx)
1181 {
1182    struct u_vbuf *vbuf = ctx->vbuf;
1183
1184    if (vbuf) {
1185       u_vbuf_restore_aux_vertex_buffer_slot(vbuf);
1186       return;
1187    }
1188
1189    cso_set_vertex_buffers(ctx, ctx->aux_vertex_buffer_index, 1,
1190                           &ctx->aux_vertex_buffer_saved);
1191    pipe_vertex_buffer_unreference(&ctx->aux_vertex_buffer_saved);
1192 }
1193
1194 unsigned cso_get_aux_vertex_buffer_slot(struct cso_context *ctx)
1195 {
1196    return ctx->aux_vertex_buffer_index;
1197 }
1198
1199
1200
1201 enum pipe_error
1202 cso_single_sampler(struct cso_context *ctx, enum pipe_shader_type shader_stage,
1203                    unsigned idx, const struct pipe_sampler_state *templ)
1204 {
1205    if (templ) {
1206       unsigned key_size = sizeof(struct pipe_sampler_state);
1207       unsigned hash_key = cso_construct_key((void*)templ, key_size);
1208       struct cso_sampler *cso;
1209       struct cso_hash_iter iter =
1210          cso_find_state_template(ctx->cache,
1211                                  hash_key, CSO_SAMPLER,
1212                                  (void *) templ, key_size);
1213
1214       if (cso_hash_iter_is_null(iter)) {
1215          cso = MALLOC(sizeof(struct cso_sampler));
1216          if (!cso)
1217             return PIPE_ERROR_OUT_OF_MEMORY;
1218
1219          memcpy(&cso->state, templ, sizeof(*templ));
1220          cso->data = ctx->pipe->create_sampler_state(ctx->pipe, &cso->state);
1221          cso->delete_state =
1222             (cso_state_callback) ctx->pipe->delete_sampler_state;
1223          cso->context = ctx->pipe;
1224          cso->hash_key = hash_key;
1225
1226          iter = cso_insert_state(ctx->cache, hash_key, CSO_SAMPLER, cso);
1227          if (cso_hash_iter_is_null(iter)) {
1228             FREE(cso);
1229             return PIPE_ERROR_OUT_OF_MEMORY;
1230          }
1231       }
1232       else {
1233          cso = cso_hash_iter_data(iter);
1234       }
1235
1236       ctx->samplers[shader_stage].cso_samplers[idx] = cso;
1237       ctx->samplers[shader_stage].samplers[idx] = cso->data;
1238       ctx->max_sampler_seen = MAX2(ctx->max_sampler_seen, (int)idx);
1239    }
1240
1241    return PIPE_OK;
1242 }
1243
1244
1245 /**
1246  * Send staged sampler state to the driver.
1247  */
1248 void
1249 cso_single_sampler_done(struct cso_context *ctx,
1250                         enum pipe_shader_type shader_stage)
1251 {
1252    struct sampler_info *info = &ctx->samplers[shader_stage];
1253
1254    if (ctx->max_sampler_seen == -1)
1255       return;
1256
1257    ctx->pipe->bind_sampler_states(ctx->pipe, shader_stage, 0,
1258                                   ctx->max_sampler_seen + 1,
1259                                   info->samplers);
1260    ctx->max_sampler_seen = -1;
1261 }
1262
1263
1264 /*
1265  * If the function encouters any errors it will return the
1266  * last one. Done to always try to set as many samplers
1267  * as possible.
1268  */
1269 enum pipe_error
1270 cso_set_samplers(struct cso_context *ctx,
1271                  enum pipe_shader_type shader_stage,
1272                  unsigned nr,
1273                  const struct pipe_sampler_state **templates)
1274 {
1275    unsigned i;
1276    enum pipe_error temp, error = PIPE_OK;
1277
1278    for (i = 0; i < nr; i++) {
1279       temp = cso_single_sampler(ctx, shader_stage, i, templates[i]);
1280       if (temp != PIPE_OK)
1281          error = temp;
1282    }
1283
1284    cso_single_sampler_done(ctx, shader_stage);
1285
1286    return error;
1287 }
1288
1289 static void
1290 cso_save_fragment_samplers(struct cso_context *ctx)
1291 {
1292    struct sampler_info *info = &ctx->samplers[PIPE_SHADER_FRAGMENT];
1293    struct sampler_info *saved = &ctx->fragment_samplers_saved;
1294
1295    memcpy(saved->cso_samplers, info->cso_samplers,
1296           sizeof(info->cso_samplers));
1297    memcpy(saved->samplers, info->samplers, sizeof(info->samplers));
1298 }
1299
1300
1301 static void
1302 cso_restore_fragment_samplers(struct cso_context *ctx)
1303 {
1304    struct sampler_info *info = &ctx->samplers[PIPE_SHADER_FRAGMENT];
1305    struct sampler_info *saved = &ctx->fragment_samplers_saved;
1306
1307    memcpy(info->cso_samplers, saved->cso_samplers,
1308           sizeof(info->cso_samplers));
1309    memcpy(info->samplers, saved->samplers, sizeof(info->samplers));
1310
1311    for (int i = PIPE_MAX_SAMPLERS - 1; i >= 0; i--) {
1312       if (info->samplers[i]) {
1313          ctx->max_sampler_seen = i;
1314          break;
1315       }
1316    }
1317
1318    cso_single_sampler_done(ctx, PIPE_SHADER_FRAGMENT);
1319 }
1320
1321
1322 void
1323 cso_set_sampler_views(struct cso_context *ctx,
1324                       enum pipe_shader_type shader_stage,
1325                       unsigned count,
1326                       struct pipe_sampler_view **views)
1327 {
1328    if (shader_stage == PIPE_SHADER_FRAGMENT) {
1329       unsigned i;
1330       boolean any_change = FALSE;
1331
1332       /* reference new views */
1333       for (i = 0; i < count; i++) {
1334          any_change |= ctx->fragment_views[i] != views[i];
1335          pipe_sampler_view_reference(&ctx->fragment_views[i], views[i]);
1336       }
1337       /* unref extra old views, if any */
1338       for (; i < ctx->nr_fragment_views; i++) {
1339          any_change |= ctx->fragment_views[i] != NULL;
1340          pipe_sampler_view_reference(&ctx->fragment_views[i], NULL);
1341       }
1342
1343       /* bind the new sampler views */
1344       if (any_change) {
1345          ctx->pipe->set_sampler_views(ctx->pipe, shader_stage, 0,
1346                                       MAX2(ctx->nr_fragment_views, count),
1347                                       ctx->fragment_views);
1348       }
1349
1350       ctx->nr_fragment_views = count;
1351    }
1352    else
1353       ctx->pipe->set_sampler_views(ctx->pipe, shader_stage, 0, count, views);
1354 }
1355
1356
1357 static void
1358 cso_save_fragment_sampler_views(struct cso_context *ctx)
1359 {
1360    unsigned i;
1361
1362    ctx->nr_fragment_views_saved = ctx->nr_fragment_views;
1363
1364    for (i = 0; i < ctx->nr_fragment_views; i++) {
1365       assert(!ctx->fragment_views_saved[i]);
1366       pipe_sampler_view_reference(&ctx->fragment_views_saved[i],
1367                                   ctx->fragment_views[i]);
1368    }
1369 }
1370
1371
1372 static void
1373 cso_restore_fragment_sampler_views(struct cso_context *ctx)
1374 {
1375    unsigned i, nr_saved = ctx->nr_fragment_views_saved;
1376    unsigned num;
1377
1378    for (i = 0; i < nr_saved; i++) {
1379       pipe_sampler_view_reference(&ctx->fragment_views[i], NULL);
1380       /* move the reference from one pointer to another */
1381       ctx->fragment_views[i] = ctx->fragment_views_saved[i];
1382       ctx->fragment_views_saved[i] = NULL;
1383    }
1384    for (; i < ctx->nr_fragment_views; i++) {
1385       pipe_sampler_view_reference(&ctx->fragment_views[i], NULL);
1386    }
1387
1388    num = MAX2(ctx->nr_fragment_views, nr_saved);
1389
1390    /* bind the old/saved sampler views */
1391    ctx->pipe->set_sampler_views(ctx->pipe, PIPE_SHADER_FRAGMENT, 0, num,
1392                                 ctx->fragment_views);
1393
1394    ctx->nr_fragment_views = nr_saved;
1395    ctx->nr_fragment_views_saved = 0;
1396 }
1397
1398
1399 void
1400 cso_set_shader_images(struct cso_context *ctx,
1401                       enum pipe_shader_type shader_stage,
1402                       unsigned start, unsigned count,
1403                       struct pipe_image_view *images)
1404 {
1405    if (shader_stage == PIPE_SHADER_FRAGMENT && start == 0 && count >= 1) {
1406       util_copy_image_view(&ctx->fragment_image0_current, &images[0]);
1407    }
1408
1409    ctx->pipe->set_shader_images(ctx->pipe, shader_stage, start, count, images);
1410 }
1411
1412
1413 static void
1414 cso_save_fragment_image0(struct cso_context *ctx)
1415 {
1416    util_copy_image_view(&ctx->fragment_image0_saved,
1417                         &ctx->fragment_image0_current);
1418 }
1419
1420
1421 static void
1422 cso_restore_fragment_image0(struct cso_context *ctx)
1423 {
1424    cso_set_shader_images(ctx, PIPE_SHADER_FRAGMENT, 0, 1,
1425                          &ctx->fragment_image0_saved);
1426 }
1427
1428
1429 void
1430 cso_set_stream_outputs(struct cso_context *ctx,
1431                        unsigned num_targets,
1432                        struct pipe_stream_output_target **targets,
1433                        const unsigned *offsets)
1434 {
1435    struct pipe_context *pipe = ctx->pipe;
1436    uint i;
1437
1438    if (!ctx->has_streamout) {
1439       assert(num_targets == 0);
1440       return;
1441    }
1442
1443    if (ctx->nr_so_targets == 0 && num_targets == 0) {
1444       /* Nothing to do. */
1445       return;
1446    }
1447
1448    /* reference new targets */
1449    for (i = 0; i < num_targets; i++) {
1450       pipe_so_target_reference(&ctx->so_targets[i], targets[i]);
1451    }
1452    /* unref extra old targets, if any */
1453    for (; i < ctx->nr_so_targets; i++) {
1454       pipe_so_target_reference(&ctx->so_targets[i], NULL);
1455    }
1456
1457    pipe->set_stream_output_targets(pipe, num_targets, targets,
1458                                    offsets);
1459    ctx->nr_so_targets = num_targets;
1460 }
1461
1462 static void
1463 cso_save_stream_outputs(struct cso_context *ctx)
1464 {
1465    uint i;
1466
1467    if (!ctx->has_streamout) {
1468       return;
1469    }
1470
1471    ctx->nr_so_targets_saved = ctx->nr_so_targets;
1472
1473    for (i = 0; i < ctx->nr_so_targets; i++) {
1474       assert(!ctx->so_targets_saved[i]);
1475       pipe_so_target_reference(&ctx->so_targets_saved[i], ctx->so_targets[i]);
1476    }
1477 }
1478
1479 static void
1480 cso_restore_stream_outputs(struct cso_context *ctx)
1481 {
1482    struct pipe_context *pipe = ctx->pipe;
1483    uint i;
1484    unsigned offset[PIPE_MAX_SO_BUFFERS];
1485
1486    if (!ctx->has_streamout) {
1487       return;
1488    }
1489
1490    if (ctx->nr_so_targets == 0 && ctx->nr_so_targets_saved == 0) {
1491       /* Nothing to do. */
1492       return;
1493    }
1494
1495    assert(ctx->nr_so_targets_saved <= PIPE_MAX_SO_BUFFERS);
1496    for (i = 0; i < ctx->nr_so_targets_saved; i++) {
1497       pipe_so_target_reference(&ctx->so_targets[i], NULL);
1498       /* move the reference from one pointer to another */
1499       ctx->so_targets[i] = ctx->so_targets_saved[i];
1500       ctx->so_targets_saved[i] = NULL;
1501       /* -1 means append */
1502       offset[i] = (unsigned)-1;
1503    }
1504    for (; i < ctx->nr_so_targets; i++) {
1505       pipe_so_target_reference(&ctx->so_targets[i], NULL);
1506    }
1507
1508    pipe->set_stream_output_targets(pipe, ctx->nr_so_targets_saved,
1509                                    ctx->so_targets, offset);
1510
1511    ctx->nr_so_targets = ctx->nr_so_targets_saved;
1512    ctx->nr_so_targets_saved = 0;
1513 }
1514
1515 /* constant buffers */
1516
1517 void
1518 cso_set_constant_buffer(struct cso_context *cso,
1519                         enum pipe_shader_type shader_stage,
1520                         unsigned index, struct pipe_constant_buffer *cb)
1521 {
1522    struct pipe_context *pipe = cso->pipe;
1523
1524    pipe->set_constant_buffer(pipe, shader_stage, index, cb);
1525
1526    if (index == 0) {
1527       util_copy_constant_buffer(&cso->aux_constbuf_current[shader_stage], cb);
1528    }
1529 }
1530
1531 void
1532 cso_set_constant_buffer_resource(struct cso_context *cso,
1533                                  enum pipe_shader_type shader_stage,
1534                                  unsigned index,
1535                                  struct pipe_resource *buffer)
1536 {
1537    if (buffer) {
1538       struct pipe_constant_buffer cb;
1539       cb.buffer = buffer;
1540       cb.buffer_offset = 0;
1541       cb.buffer_size = buffer->width0;
1542       cb.user_buffer = NULL;
1543       cso_set_constant_buffer(cso, shader_stage, index, &cb);
1544    } else {
1545       cso_set_constant_buffer(cso, shader_stage, index, NULL);
1546    }
1547 }
1548
1549 void
1550 cso_save_constant_buffer_slot0(struct cso_context *cso,
1551                                enum pipe_shader_type shader_stage)
1552 {
1553    util_copy_constant_buffer(&cso->aux_constbuf_saved[shader_stage],
1554                              &cso->aux_constbuf_current[shader_stage]);
1555 }
1556
1557 void
1558 cso_restore_constant_buffer_slot0(struct cso_context *cso,
1559                                   enum pipe_shader_type shader_stage)
1560 {
1561    cso_set_constant_buffer(cso, shader_stage, 0,
1562                            &cso->aux_constbuf_saved[shader_stage]);
1563    pipe_resource_reference(&cso->aux_constbuf_saved[shader_stage].buffer,
1564                            NULL);
1565 }
1566
1567
1568 /**
1569  * Save all the CSO state items specified by the state_mask bitmask
1570  * of CSO_BIT_x flags.
1571  */
1572 void
1573 cso_save_state(struct cso_context *cso, unsigned state_mask)
1574 {
1575    assert(cso->saved_state == 0);
1576
1577    cso->saved_state = state_mask;
1578
1579    if (state_mask & CSO_BIT_AUX_VERTEX_BUFFER_SLOT)
1580       cso_save_aux_vertex_buffer_slot(cso);
1581    if (state_mask & CSO_BIT_BLEND)
1582       cso_save_blend(cso);
1583    if (state_mask & CSO_BIT_DEPTH_STENCIL_ALPHA)
1584       cso_save_depth_stencil_alpha(cso);
1585    if (state_mask & CSO_BIT_FRAGMENT_SAMPLERS)
1586       cso_save_fragment_samplers(cso);
1587    if (state_mask & CSO_BIT_FRAGMENT_SAMPLER_VIEWS)
1588       cso_save_fragment_sampler_views(cso);
1589    if (state_mask & CSO_BIT_FRAGMENT_SHADER)
1590       cso_save_fragment_shader(cso);
1591    if (state_mask & CSO_BIT_FRAMEBUFFER)
1592       cso_save_framebuffer(cso);
1593    if (state_mask & CSO_BIT_GEOMETRY_SHADER)
1594       cso_save_geometry_shader(cso);
1595    if (state_mask & CSO_BIT_MIN_SAMPLES)
1596       cso_save_min_samples(cso);
1597    if (state_mask & CSO_BIT_RASTERIZER)
1598       cso_save_rasterizer(cso);
1599    if (state_mask & CSO_BIT_RENDER_CONDITION)
1600       cso_save_render_condition(cso);
1601    if (state_mask & CSO_BIT_SAMPLE_MASK)
1602       cso_save_sample_mask(cso);
1603    if (state_mask & CSO_BIT_STENCIL_REF)
1604       cso_save_stencil_ref(cso);
1605    if (state_mask & CSO_BIT_STREAM_OUTPUTS)
1606       cso_save_stream_outputs(cso);
1607    if (state_mask & CSO_BIT_TESSCTRL_SHADER)
1608       cso_save_tessctrl_shader(cso);
1609    if (state_mask & CSO_BIT_TESSEVAL_SHADER)
1610       cso_save_tesseval_shader(cso);
1611    if (state_mask & CSO_BIT_VERTEX_ELEMENTS)
1612       cso_save_vertex_elements(cso);
1613    if (state_mask & CSO_BIT_VERTEX_SHADER)
1614       cso_save_vertex_shader(cso);
1615    if (state_mask & CSO_BIT_VIEWPORT)
1616       cso_save_viewport(cso);
1617    if (state_mask & CSO_BIT_PAUSE_QUERIES)
1618       cso->pipe->set_active_query_state(cso->pipe, false);
1619    if (state_mask & CSO_BIT_FRAGMENT_IMAGE0)
1620       cso_save_fragment_image0(cso);
1621 }
1622
1623
1624 /**
1625  * Restore the state which was saved by cso_save_state().
1626  */
1627 void
1628 cso_restore_state(struct cso_context *cso)
1629 {
1630    unsigned state_mask = cso->saved_state;
1631
1632    assert(state_mask);
1633
1634    if (state_mask & CSO_BIT_AUX_VERTEX_BUFFER_SLOT)
1635       cso_restore_aux_vertex_buffer_slot(cso);
1636    if (state_mask & CSO_BIT_BLEND)
1637       cso_restore_blend(cso);
1638    if (state_mask & CSO_BIT_DEPTH_STENCIL_ALPHA)
1639       cso_restore_depth_stencil_alpha(cso);
1640    if (state_mask & CSO_BIT_FRAGMENT_SAMPLERS)
1641       cso_restore_fragment_samplers(cso);
1642    if (state_mask & CSO_BIT_FRAGMENT_SAMPLER_VIEWS)
1643       cso_restore_fragment_sampler_views(cso);
1644    if (state_mask & CSO_BIT_FRAGMENT_SHADER)
1645       cso_restore_fragment_shader(cso);
1646    if (state_mask & CSO_BIT_FRAMEBUFFER)
1647       cso_restore_framebuffer(cso);
1648    if (state_mask & CSO_BIT_GEOMETRY_SHADER)
1649       cso_restore_geometry_shader(cso);
1650    if (state_mask & CSO_BIT_MIN_SAMPLES)
1651       cso_restore_min_samples(cso);
1652    if (state_mask & CSO_BIT_RASTERIZER)
1653       cso_restore_rasterizer(cso);
1654    if (state_mask & CSO_BIT_RENDER_CONDITION)
1655       cso_restore_render_condition(cso);
1656    if (state_mask & CSO_BIT_SAMPLE_MASK)
1657       cso_restore_sample_mask(cso);
1658    if (state_mask & CSO_BIT_STENCIL_REF)
1659       cso_restore_stencil_ref(cso);
1660    if (state_mask & CSO_BIT_STREAM_OUTPUTS)
1661       cso_restore_stream_outputs(cso);
1662    if (state_mask & CSO_BIT_TESSCTRL_SHADER)
1663       cso_restore_tessctrl_shader(cso);
1664    if (state_mask & CSO_BIT_TESSEVAL_SHADER)
1665       cso_restore_tesseval_shader(cso);
1666    if (state_mask & CSO_BIT_VERTEX_ELEMENTS)
1667       cso_restore_vertex_elements(cso);
1668    if (state_mask & CSO_BIT_VERTEX_SHADER)
1669       cso_restore_vertex_shader(cso);
1670    if (state_mask & CSO_BIT_VIEWPORT)
1671       cso_restore_viewport(cso);
1672    if (state_mask & CSO_BIT_PAUSE_QUERIES)
1673       cso->pipe->set_active_query_state(cso->pipe, true);
1674    if (state_mask & CSO_BIT_FRAGMENT_IMAGE0)
1675       cso_restore_fragment_image0(cso);
1676
1677    cso->saved_state = 0;
1678 }
1679
1680
1681
1682 /* drawing */
1683
1684 void
1685 cso_draw_vbo(struct cso_context *cso,
1686              const struct pipe_draw_info *info)
1687 {
1688    struct u_vbuf *vbuf = cso->vbuf;
1689
1690    if (vbuf) {
1691       u_vbuf_draw_vbo(vbuf, info);
1692    } else {
1693       struct pipe_context *pipe = cso->pipe;
1694       pipe->draw_vbo(pipe, info);
1695    }
1696 }
1697
1698 void
1699 cso_draw_arrays(struct cso_context *cso, uint mode, uint start, uint count)
1700 {
1701    struct pipe_draw_info info;
1702
1703    util_draw_init_info(&info);
1704
1705    info.mode = mode;
1706    info.start = start;
1707    info.count = count;
1708    info.min_index = start;
1709    info.max_index = start + count - 1;
1710
1711    cso_draw_vbo(cso, &info);
1712 }
1713
1714 void
1715 cso_draw_arrays_instanced(struct cso_context *cso, uint mode,
1716                           uint start, uint count,
1717                           uint start_instance, uint instance_count)
1718 {
1719    struct pipe_draw_info info;
1720
1721    util_draw_init_info(&info);
1722
1723    info.mode = mode;
1724    info.start = start;
1725    info.count = count;
1726    info.min_index = start;
1727    info.max_index = start + count - 1;
1728    info.start_instance = start_instance;
1729    info.instance_count = instance_count;
1730
1731    cso_draw_vbo(cso, &info);
1732 }