src/gallium/drivers/softpipe/sp_state_sampler.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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 /* Authors:
  29  *  Brian Paul
  30  */
  31
  32 #include "util/u_memory.h"
  33 #include "util/u_inlines.h"
  34
  35 #include "draw/draw_context.h"
  36 #include "draw/draw_context.h"
  37
  38 #include "sp_context.h"
  39 #include "sp_state.h"
  40 #include "sp_texture.h"
  41 #include "sp_tex_sample.h"
  42 #include "sp_tex_tile_cache.h"
  43
  44
  45 struct sp_sampler {
  46    struct pipe_sampler_state base;
  47    struct sp_sampler_varient *varients;
  48    struct sp_sampler_varient *current;
  49 };
  50
  51 static struct sp_sampler *sp_sampler( struct pipe_sampler_state *sampler )
  52 {
  53    return (struct sp_sampler *)sampler;
  54 }
  55
  56
  57 void *
  58 softpipe_create_sampler_state(struct pipe_context *pipe,
  59                               const struct pipe_sampler_state *sampler)
  60 {
  61    struct sp_sampler *sp_sampler = CALLOC_STRUCT(sp_sampler);
  62
  63    sp_sampler->base = *sampler;
  64    sp_sampler->varients = NULL;
  65
  66    return (void *)sp_sampler;
  67 }
  68
  69
  70 void
  71 softpipe_bind_sampler_states(struct pipe_context *pipe,
  72                              unsigned num, void **sampler)
  73 {
  74    struct softpipe_context *softpipe = softpipe_context(pipe);
  75    unsigned i;
  76
  77    assert(num <= PIPE_MAX_SAMPLERS);
  78
  79    /* Check for no-op */
  80    if (num == softpipe->num_samplers &&
  81        !memcmp(softpipe->sampler, sampler, num * sizeof(void *)))
  82       return;
  83
  84    draw_flush(softpipe->draw);
  85
  86    for (i = 0; i < num; ++i)
  87       softpipe->sampler[i] = sampler[i];
  88    for (i = num; i < PIPE_MAX_SAMPLERS; ++i)
  89       softpipe->sampler[i] = NULL;
  90
  91    softpipe->num_samplers = num;
  92
  93    softpipe->dirty |= SP_NEW_SAMPLER;
  94 }
  95
  96
  97 void
  98 softpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
  99                                     unsigned num_samplers,
 100                                     void **samplers)
 101 {
 102    struct softpipe_context *softpipe = softpipe_context(pipe);
 103    unsigned i;
 104
 105    assert(num_samplers <= PIPE_MAX_VERTEX_SAMPLERS);
 106
 107    /* Check for no-op */
 108    if (num_samplers == softpipe->num_vertex_samplers &&
 109        !memcmp(softpipe->vertex_samplers, samplers, num_samplers * sizeof(void *)))
 110       return;
 111
 112    draw_flush(softpipe->draw);
 113
 114    for (i = 0; i < num_samplers; ++i)
 115       softpipe->vertex_samplers[i] = samplers[i];
 116    for (i = num_samplers; i < PIPE_MAX_VERTEX_SAMPLERS; ++i)
 117       softpipe->vertex_samplers[i] = NULL;
 118
 119    softpipe->num_vertex_samplers = num_samplers;
 120
 121    softpipe->dirty |= SP_NEW_SAMPLER;
 122 }
 123
 124 void
 125 softpipe_bind_geometry_sampler_states(struct pipe_context *pipe,
 126                                       unsigned num_samplers,
 127                                       void **samplers)
 128 {
 129    struct softpipe_context *softpipe = softpipe_context(pipe);
 130    unsigned i;
 131
 132    assert(num_samplers <= PIPE_MAX_GEOMETRY_SAMPLERS);
 133
 134    /* Check for no-op */
 135    if (num_samplers == softpipe->num_geometry_samplers &&
 136        !memcmp(softpipe->geometry_samplers, samplers, num_samplers * sizeof(void *)))
 137       return;
 138
 139    draw_flush(softpipe->draw);
 140
 141    for (i = 0; i < num_samplers; ++i)
 142       softpipe->geometry_samplers[i] = samplers[i];
 143    for (i = num_samplers; i < PIPE_MAX_GEOMETRY_SAMPLERS; ++i)
 144       softpipe->geometry_samplers[i] = NULL;
 145
 146    softpipe->num_geometry_samplers = num_samplers;
 147
 148    softpipe->dirty |= SP_NEW_SAMPLER;
 149 }
 150
 151
 152 struct pipe_sampler_view *
 153 softpipe_create_sampler_view(struct pipe_context *pipe,
 154                              struct pipe_resource *resource,
 155                              const struct pipe_sampler_view *templ)
 156 {
 157    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
 158
 159    if (view) {
 160       *view = *templ;
 161       view->reference.count = 1;
 162       view->texture = NULL;
 163       pipe_resource_reference(&view->texture, resource);
 164       view->context = pipe;
 165    }
 166
 167    return view;
 168 }
 169
 170
 171 void
 172 softpipe_sampler_view_destroy(struct pipe_context *pipe,
 173                               struct pipe_sampler_view *view)
 174 {
 175    pipe_resource_reference(&view->texture, NULL);
 176    FREE(view);
 177 }
 178
 179
 180 void
 181 softpipe_set_sampler_views(struct pipe_context *pipe,
 182                            unsigned num,
 183                            struct pipe_sampler_view **views)
 184 {
 185    struct softpipe_context *softpipe = softpipe_context(pipe);
 186    uint i;
 187
 188    assert(num <= PIPE_MAX_SAMPLERS);
 189
 190    /* Check for no-op */
 191    if (num == softpipe->num_sampler_views &&
 192        !memcmp(softpipe->sampler_views, views, num * sizeof(struct pipe_sampler_view *)))
 193       return;
 194
 195    draw_flush(softpipe->draw);
 196
 197    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 198       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 199
 200       pipe_sampler_view_reference(&softpipe->sampler_views[i], view);
 201       sp_tex_tile_cache_set_sampler_view(softpipe->tex_cache[i], view);
 202    }
 203
 204    softpipe->num_sampler_views = num;
 205
 206    softpipe->dirty |= SP_NEW_TEXTURE;
 207 }
 208
 209
 210 void
 211 softpipe_set_vertex_sampler_views(struct pipe_context *pipe,
 212                                   unsigned num,
 213                                   struct pipe_sampler_view **views)
 214 {
 215    struct softpipe_context *softpipe = softpipe_context(pipe);
 216    uint i;
 217
 218    assert(num <= PIPE_MAX_VERTEX_SAMPLERS);
 219
 220    /* Check for no-op */
 221    if (num == softpipe->num_vertex_sampler_views &&
 222        !memcmp(softpipe->vertex_sampler_views, views, num * sizeof(struct pipe_sampler_view *))) {
 223       return;
 224    }
 225
 226    draw_flush(softpipe->draw);
 227
 228    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 229       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 230
 231       pipe_sampler_view_reference(&softpipe->vertex_sampler_views[i], view);
 232       sp_tex_tile_cache_set_sampler_view(softpipe->vertex_tex_cache[i], view);
 233    }
 234
 235    softpipe->num_vertex_sampler_views = num;
 236
 237    softpipe->dirty |= SP_NEW_TEXTURE;
 238 }
 239
 240 void
 241 softpipe_set_geometry_sampler_views(struct pipe_context *pipe,
 242                                     unsigned num,
 243                                     struct pipe_sampler_view **views)
 244 {
 245    struct softpipe_context *softpipe = softpipe_context(pipe);
 246    uint i;
 247
 248    assert(num <= PIPE_MAX_GEOMETRY_SAMPLERS);
 249
 250    /* Check for no-op */
 251    if (num == softpipe->num_geometry_sampler_views &&
 252        !memcmp(softpipe->geometry_sampler_views, views, num * sizeof(struct pipe_sampler_view *))) {
 253       return;
 254    }
 255
 256    draw_flush(softpipe->draw);
 257
 258    for (i = 0; i < PIPE_MAX_GEOMETRY_SAMPLERS; i++) {
 259       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 260
 261       pipe_sampler_view_reference(&softpipe->geometry_sampler_views[i], view);
 262       sp_tex_tile_cache_set_sampler_view(softpipe->geometry_tex_cache[i], view);
 263    }
 264
 265    softpipe->num_geometry_sampler_views = num;
 266
 267    softpipe->dirty |= SP_NEW_TEXTURE;
 268 }
 269
 270
 271 /**
 272  * Find/create an sp_sampler_varient object for sampling the given texture,
 273  * sampler and tex unit.
 274  *
 275  * Note that the tex unit is significant.  We can't re-use a sampler
 276  * varient for multiple texture units because the sampler varient contains
 277  * the texture object pointer.  If the texture object pointer were stored
 278  * somewhere outside the sampler varient, we could re-use samplers for
 279  * multiple texture units.
 280  */
 281 static struct sp_sampler_varient *
 282 get_sampler_varient( unsigned unit,
 283                      struct sp_sampler *sampler,
 284                      struct pipe_resource *resource,
 285                      unsigned processor )
 286 {
 287    struct softpipe_resource *sp_texture = softpipe_resource(resource);
 288    struct sp_sampler_varient *v = NULL;
 289    union sp_sampler_key key;
 290
 291    /* if this fails, widen the key.unit field and update this assertion */
 292    assert(PIPE_MAX_SAMPLERS <= 16);
 293
 294    key.bits.target = sp_texture->base.target;
 295    key.bits.is_pot = sp_texture->pot;
 296    key.bits.processor = processor;
 297    key.bits.unit = unit;
 298    key.bits.pad = 0;
 299
 300    if (sampler->current &&
 301        key.value == sampler->current->key.value) {
 302       v = sampler->current;
 303    }
 304
 305    if (v == NULL) {
 306       for (v = sampler->varients; v; v = v->next)
 307          if (v->key.value == key.value)
 308             break;
 309
 310       if (v == NULL) {
 311          v = sp_create_sampler_varient( &sampler->base, key );
 312          v->next = sampler->varients;
 313          sampler->varients = v;
 314       }
 315    }
 316
 317    sampler->current = v;
 318    return v;
 319 }
 320
 321
 322
 323
 324 void
 325 softpipe_reset_sampler_varients(struct softpipe_context *softpipe)
 326 {
 327    int i;
 328
 329    /* It's a bit hard to build these samplers ahead of time -- don't
 330     * really know which samplers are going to be used for vertex and
 331     * fragment programs.
 332     */
 333    for (i = 0; i <= softpipe->vs->max_sampler; i++) {
 334       if (softpipe->vertex_samplers[i]) {
 335          struct pipe_resource *texture = NULL;
 336
 337          if (softpipe->vertex_sampler_views[i]) {
 338             texture = softpipe->vertex_sampler_views[i]->texture;
 339          }
 340
 341          softpipe->tgsi.vert_samplers_list[i] =
 342             get_sampler_varient( i,
 343                                  sp_sampler(softpipe->vertex_samplers[i]),
 344                                  texture,
 345                                  TGSI_PROCESSOR_VERTEX );
 346
 347          sp_sampler_varient_bind_texture( softpipe->tgsi.vert_samplers_list[i],
 348                                           softpipe->vertex_tex_cache[i],
 349                                           texture );
 350       }
 351    }
 352
 353    if (softpipe->gs) {
 354       for (i = 0; i <= softpipe->gs->max_sampler; i++) {
 355          if (softpipe->geometry_samplers[i]) {
 356             struct pipe_resource *texture = NULL;
 357
 358             if (softpipe->geometry_sampler_views[i]) {
 359                texture = softpipe->geometry_sampler_views[i]->texture;
 360             }
 361
 362             softpipe->tgsi.geom_samplers_list[i] =
 363                get_sampler_varient(
 364                   i,
 365                   sp_sampler(softpipe->geometry_samplers[i]),
 366                   texture,
 367                   TGSI_PROCESSOR_GEOMETRY );
 368
 369             sp_sampler_varient_bind_texture(
 370                softpipe->tgsi.geom_samplers_list[i],
 371                softpipe->geometry_tex_cache[i],
 372                texture );
 373          }
 374       }
 375    }
 376
 377    for (i = 0; i <= softpipe->fs->info.file_max[TGSI_FILE_SAMPLER]; i++) {
 378       if (softpipe->sampler[i]) {
 379          struct pipe_resource *texture = NULL;
 380
 381          if (softpipe->sampler_views[i]) {
 382             texture = softpipe->sampler_views[i]->texture;
 383          }
 384
 385          softpipe->tgsi.frag_samplers_list[i] =
 386             get_sampler_varient( i,
 387                                  sp_sampler(softpipe->sampler[i]),
 388                                  texture,
 389                                  TGSI_PROCESSOR_FRAGMENT );
 390
 391          sp_sampler_varient_bind_texture( softpipe->tgsi.frag_samplers_list[i],
 392                                           softpipe->tex_cache[i],
 393                                           texture );
 394       }
 395    }
 396 }
 397
 398
 399
 400 void
 401 softpipe_delete_sampler_state(struct pipe_context *pipe,
 402                               void *sampler)
 403 {
 404    struct sp_sampler *sp_sampler = (struct sp_sampler *)sampler;
 405    struct sp_sampler_varient *v, *tmp;
 406
 407    for (v = sp_sampler->varients; v; v = tmp) {
 408       tmp = v->next;
 409       sp_sampler_varient_destroy(v);
 410    }
 411
 412    FREE( sampler );
 413 }
 414
 415
 416