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