src/gallium/drivers/llvmpipe/lp_state_sampler.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
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  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 /* Authors:
  29  *  Brian Paul
  30  */
  31
  32 #include "util/u_inlines.h"
  33 #include "util/u_memory.h"
  34
  35 #include "draw/draw_context.h"
  36
  37 #include "lp_context.h"
  38 #include "lp_screen.h"
  39 #include "lp_state.h"
  40 #include "lp_debug.h"
  41 #include "frontend/sw_winsys.h"
  42 #include "lp_flush.h"
  43
  44
  45 static void *
  46 llvmpipe_create_sampler_state(struct pipe_context *pipe,
  47                               const struct pipe_sampler_state *sampler)
  48 {
  49    struct pipe_sampler_state *state = mem_dup(sampler, sizeof *sampler);
  50
  51    if (LP_PERF & PERF_NO_MIP_LINEAR) {
  52       if (state->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
  53          state->min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
  54    }
  55
  56    if (LP_PERF & PERF_NO_MIPMAPS)
  57       state->min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
  58
  59    if (LP_PERF & PERF_NO_LINEAR) {
  60       state->mag_img_filter = PIPE_TEX_FILTER_NEAREST;
  61       state->min_img_filter = PIPE_TEX_FILTER_NEAREST;
  62    }
  63
  64    return state;
  65 }
  66
  67
  68 static void
  69 llvmpipe_bind_sampler_states(struct pipe_context *pipe,
  70                              enum pipe_shader_type shader,
  71                              unsigned start,
  72                              unsigned num,
  73                              void **samplers)
  74 {
  75    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  76    unsigned i;
  77
  78    assert(shader < PIPE_SHADER_TYPES);
  79    assert(start + num <= ARRAY_SIZE(llvmpipe->samplers[shader]));
  80
  81    draw_flush(llvmpipe->draw);
  82
  83    /* set the new samplers */
  84    for (i = 0; i < num; i++) {
  85       llvmpipe->samplers[shader][start + i] = samplers[i];
  86    }
  87
  88    /* find highest non-null samplers[] entry */
  89    {
  90       unsigned j = MAX2(llvmpipe->num_samplers[shader], start + num);
  91       while (j > 0 && llvmpipe->samplers[shader][j - 1] == NULL)
  92          j--;
  93       llvmpipe->num_samplers[shader] = j;
  94    }
  95
  96    if (shader == PIPE_SHADER_VERTEX ||
  97        shader == PIPE_SHADER_GEOMETRY ||
  98        shader == PIPE_SHADER_TESS_CTRL ||
  99        shader == PIPE_SHADER_TESS_EVAL) {
 100       draw_set_samplers(llvmpipe->draw,
 101                         shader,
 102                         llvmpipe->samplers[shader],
 103                         llvmpipe->num_samplers[shader]);
 104    }
 105    else if (shader == PIPE_SHADER_COMPUTE) {
 106       llvmpipe->cs_dirty |= LP_CSNEW_SAMPLER;
 107    } else {
 108       llvmpipe->dirty |= LP_NEW_SAMPLER;
 109    }
 110 }
 111
 112
 113 static void
 114 llvmpipe_set_sampler_views(struct pipe_context *pipe,
 115                            enum pipe_shader_type shader,
 116                            unsigned start,
 117                            unsigned num,
 118                            struct pipe_sampler_view **views)
 119 {
 120    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 121    uint i;
 122
 123    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 124
 125    assert(shader < PIPE_SHADER_TYPES);
 126    assert(start + num <= ARRAY_SIZE(llvmpipe->sampler_views[shader]));
 127
 128    draw_flush(llvmpipe->draw);
 129
 130    /* set the new sampler views */
 131    for (i = 0; i < num; i++) {
 132       /*
 133        * Warn if someone tries to set a view created in a different context
 134        * (which is why we need the hack above in the first place).
 135        * An assert would be better but st/mesa relies on it...
 136        */
 137       if (views[i] && views[i]->context != pipe) {
 138          debug_printf("Illegal setting of sampler_view %d created in another "
 139                       "context\n", i);
 140       }
 141
 142       if (views[i])
 143          llvmpipe_flush_resource(pipe, views[i]->texture, 0, true, false, false, "sampler_view");
 144       pipe_sampler_view_reference(&llvmpipe->sampler_views[shader][start + i],
 145                                   views[i]);
 146    }
 147
 148    /* find highest non-null sampler_views[] entry */
 149    {
 150       unsigned j = MAX2(llvmpipe->num_sampler_views[shader], start + num);
 151       while (j > 0 && llvmpipe->sampler_views[shader][j - 1] == NULL)
 152          j--;
 153       llvmpipe->num_sampler_views[shader] = j;
 154    }
 155
 156    if (shader == PIPE_SHADER_VERTEX ||
 157        shader == PIPE_SHADER_GEOMETRY ||
 158        shader == PIPE_SHADER_TESS_CTRL ||
 159        shader == PIPE_SHADER_TESS_EVAL) {
 160       draw_set_sampler_views(llvmpipe->draw,
 161                              shader,
 162                              llvmpipe->sampler_views[shader],
 163                              llvmpipe->num_sampler_views[shader]);
 164    }
 165    else if (shader == PIPE_SHADER_COMPUTE) {
 166       llvmpipe->cs_dirty |= LP_CSNEW_SAMPLER_VIEW;
 167    } else {
 168       llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 169    }
 170 }
 171
 172
 173 static struct pipe_sampler_view *
 174 llvmpipe_create_sampler_view(struct pipe_context *pipe,
 175                             struct pipe_resource *texture,
 176                             const struct pipe_sampler_view *templ)
 177 {
 178    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
 179    /*
 180     * XXX: bind flags from OpenGL state tracker are notoriously unreliable.
 181     * This looks unfixable, so fix the bind flags instead when it happens.
 182     */
 183    if (!(texture->bind & PIPE_BIND_SAMPLER_VIEW)) {
 184       debug_printf("Illegal sampler view creation without bind flag\n");
 185       texture->bind |= PIPE_BIND_SAMPLER_VIEW;
 186    }
 187
 188    if (view) {
 189       *view = *templ;
 190       view->reference.count = 1;
 191       view->texture = NULL;
 192       pipe_resource_reference(&view->texture, texture);
 193       view->context = pipe;
 194
 195 #ifdef DEBUG
 196      /*
 197       * This is possibly too lenient, but the primary reason is just
 198       * to catch gallium frontends which forget to initialize this, so
 199       * it only catches clearly impossible view targets.
 200       */
 201       if (view->target != texture->target) {
 202          if (view->target == PIPE_TEXTURE_1D)
 203             assert(texture->target == PIPE_TEXTURE_1D_ARRAY);
 204          else if (view->target == PIPE_TEXTURE_1D_ARRAY)
 205             assert(texture->target == PIPE_TEXTURE_1D);
 206          else if (view->target == PIPE_TEXTURE_2D)
 207             assert(texture->target == PIPE_TEXTURE_2D_ARRAY ||
 208                    texture->target == PIPE_TEXTURE_CUBE ||
 209                    texture->target == PIPE_TEXTURE_CUBE_ARRAY);
 210          else if (view->target == PIPE_TEXTURE_2D_ARRAY)
 211             assert(texture->target == PIPE_TEXTURE_2D ||
 212                    texture->target == PIPE_TEXTURE_CUBE ||
 213                    texture->target == PIPE_TEXTURE_CUBE_ARRAY);
 214          else if (view->target == PIPE_TEXTURE_CUBE)
 215             assert(texture->target == PIPE_TEXTURE_CUBE_ARRAY ||
 216                    texture->target == PIPE_TEXTURE_2D_ARRAY);
 217          else if (view->target == PIPE_TEXTURE_CUBE_ARRAY)
 218             assert(texture->target == PIPE_TEXTURE_CUBE ||
 219                    texture->target == PIPE_TEXTURE_2D_ARRAY);
 220          else
 221             assert(0);
 222       }
 223 #endif
 224    }
 225
 226    return view;
 227 }
 228
 229
 230 static void
 231 llvmpipe_sampler_view_destroy(struct pipe_context *pipe,
 232                               struct pipe_sampler_view *view)
 233 {
 234    pipe_resource_reference(&view->texture, NULL);
 235    FREE(view);
 236 }
 237
 238
 239 static void
 240 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 241                               void *sampler)
 242 {
 243    FREE( sampler );
 244 }
 245
 246
 247 static void
 248 prepare_shader_sampling(
 249    struct llvmpipe_context *lp,
 250    unsigned num,
 251    struct pipe_sampler_view **views,
 252    enum pipe_shader_type shader_type)
 253 {
 254
 255    unsigned i;
 256    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
 257    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
 258    uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
 259    const void *addr;
 260
 261    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 262    if (!num)
 263       return;
 264
 265    for (i = 0; i < num; i++) {
 266       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 267
 268       if (view) {
 269          struct pipe_resource *tex = view->texture;
 270          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 271          unsigned width0 = tex->width0;
 272          unsigned num_layers = tex->depth0;
 273          unsigned first_level = 0;
 274          unsigned last_level = 0;
 275          unsigned sample_stride = 0;
 276          unsigned num_samples = tex->nr_samples;
 277
 278          if (!lp_tex->dt) {
 279             /* regular texture - setup array of mipmap level offsets */
 280             struct pipe_resource *res = view->texture;
 281             int j;
 282
 283             if (llvmpipe_resource_is_texture(res)) {
 284                first_level = view->u.tex.first_level;
 285                last_level = view->u.tex.last_level;
 286                assert(first_level <= last_level);
 287                assert(last_level <= res->last_level);
 288                addr = lp_tex->tex_data;
 289
 290                sample_stride = lp_tex->sample_stride;
 291
 292                for (j = first_level; j <= last_level; j++) {
 293                   mip_offsets[j] = lp_tex->mip_offsets[j];
 294                   row_stride[j] = lp_tex->row_stride[j];
 295                   img_stride[j] = lp_tex->img_stride[j];
 296                }
 297                if (tex->target == PIPE_TEXTURE_1D_ARRAY ||
 298                    tex->target == PIPE_TEXTURE_2D_ARRAY ||
 299                    tex->target == PIPE_TEXTURE_CUBE ||
 300                    tex->target == PIPE_TEXTURE_CUBE_ARRAY) {
 301                   num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 302                   for (j = first_level; j <= last_level; j++) {
 303                      mip_offsets[j] += view->u.tex.first_layer *
 304                                        lp_tex->img_stride[j];
 305                   }
 306                   if (view->target == PIPE_TEXTURE_CUBE ||
 307                       view->target == PIPE_TEXTURE_CUBE_ARRAY) {
 308                      assert(num_layers % 6 == 0);
 309                   }
 310                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
 311                   assert(view->u.tex.last_layer < res->array_size);
 312                }
 313             }
 314             else {
 315                unsigned view_blocksize = util_format_get_blocksize(view->format);
 316                addr = lp_tex->data;
 317                /* probably don't really need to fill that out */
 318                mip_offsets[0] = 0;
 319                row_stride[0] = 0;
 320                img_stride[0] = 0;
 321
 322                /* everything specified in number of elements here. */
 323                width0 = view->u.buf.size / view_blocksize;
 324                addr = (uint8_t *)addr + view->u.buf.offset;
 325                assert(view->u.buf.offset + view->u.buf.size <= res->width0);
 326             }
 327          }
 328          else {
 329             /* display target texture/surface */
 330             /*
 331              * XXX: Where should this be unmapped?
 332              */
 333             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 334             struct sw_winsys *winsys = screen->winsys;
 335             addr = winsys->displaytarget_map(winsys, lp_tex->dt,
 336                                                 PIPE_TRANSFER_READ);
 337             row_stride[0] = lp_tex->row_stride[0];
 338             img_stride[0] = lp_tex->img_stride[0];
 339             mip_offsets[0] = 0;
 340             assert(addr);
 341          }
 342          draw_set_mapped_texture(lp->draw,
 343                                  shader_type,
 344                                  i,
 345                                  width0, tex->height0, num_layers,
 346                                  first_level, last_level,
 347                                  num_samples, sample_stride,
 348                                  addr,
 349                                  row_stride, img_stride, mip_offsets);
 350       }
 351    }
 352 }
 353
 354
 355 /**
 356  * Called whenever we're about to draw (no dirty flag, FIXME?).
 357  */
 358 void
 359 llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
 360                                  unsigned num,
 361                                  struct pipe_sampler_view **views)
 362 {
 363    prepare_shader_sampling(lp, num, views, PIPE_SHADER_VERTEX);
 364 }
 365
 366
 367 /**
 368  * Called whenever we're about to draw (no dirty flag, FIXME?).
 369  */
 370 void
 371 llvmpipe_prepare_geometry_sampling(struct llvmpipe_context *lp,
 372                                    unsigned num,
 373                                    struct pipe_sampler_view **views)
 374 {
 375    prepare_shader_sampling(lp, num, views, PIPE_SHADER_GEOMETRY);
 376 }
 377
 378 /**
 379  * Called whenever we're about to draw (no dirty flag, FIXME?).
 380  */
 381 void
 382 llvmpipe_prepare_tess_ctrl_sampling(struct llvmpipe_context *lp,
 383                                     unsigned num,
 384                                     struct pipe_sampler_view **views)
 385 {
 386    prepare_shader_sampling(lp, num, views, PIPE_SHADER_TESS_CTRL);
 387 }
 388
 389 /**
 390  * Called whenever we're about to draw (no dirty flag, FIXME?).
 391  */
 392 void
 393 llvmpipe_prepare_tess_eval_sampling(struct llvmpipe_context *lp,
 394                                     unsigned num,
 395                                     struct pipe_sampler_view **views)
 396 {
 397    prepare_shader_sampling(lp, num, views, PIPE_SHADER_TESS_EVAL);
 398 }
 399
 400 static void
 401 prepare_shader_images(
 402    struct llvmpipe_context *lp,
 403    unsigned num,
 404    struct pipe_image_view *views,
 405    enum pipe_shader_type shader_type)
 406 {
 407
 408    unsigned i;
 409    uint32_t row_stride;
 410    uint32_t img_stride;
 411    uint32_t sample_stride;
 412    const void *addr;
 413
 414    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 415    if (!num)
 416       return;
 417
 418    for (i = 0; i < num; i++) {
 419       struct pipe_image_view *view = i < num ? &views[i] : NULL;
 420
 421       if (view) {
 422          struct pipe_resource *img = view->resource;
 423          struct llvmpipe_resource *lp_img = llvmpipe_resource(img);
 424          if (!img)
 425             continue;
 426
 427          unsigned width = u_minify(img->width0, view->u.tex.level);
 428          unsigned height = u_minify(img->height0, view->u.tex.level);
 429          unsigned num_layers = img->depth0;
 430          unsigned num_samples = img->nr_samples;
 431
 432          if (!lp_img->dt) {
 433             /* regular texture - setup array of mipmap level offsets */
 434             struct pipe_resource *res = view->resource;
 435
 436             if (llvmpipe_resource_is_texture(res)) {
 437                uint32_t mip_offset = lp_img->mip_offsets[view->u.tex.level];
 438                addr = lp_img->tex_data;
 439
 440                if (img->target == PIPE_TEXTURE_1D_ARRAY ||
 441                    img->target == PIPE_TEXTURE_2D_ARRAY ||
 442                    img->target == PIPE_TEXTURE_3D ||
 443                    img->target == PIPE_TEXTURE_CUBE ||
 444                    img->target == PIPE_TEXTURE_CUBE_ARRAY) {
 445                   num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 446                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
 447                   mip_offset += view->u.tex.first_layer * lp_img->img_stride[view->u.tex.level];
 448                }
 449
 450                row_stride = lp_img->row_stride[view->u.tex.level];
 451                img_stride = lp_img->img_stride[view->u.tex.level];
 452                sample_stride = lp_img->sample_stride;
 453                addr = (uint8_t *)addr + mip_offset;
 454             }
 455             else {
 456                unsigned view_blocksize = util_format_get_blocksize(view->format);
 457                addr = lp_img->data;
 458                /* probably don't really need to fill that out */
 459                row_stride = 0;
 460                img_stride = 0;
 461                sample_stride = 0;
 462
 463                /* everything specified in number of elements here. */
 464                width = view->u.buf.size / view_blocksize;
 465                addr = (uint8_t *)addr + view->u.buf.offset;
 466                assert(view->u.buf.offset + view->u.buf.size <= res->width0);
 467             }
 468          }
 469          else {
 470             /* display target texture/surface */
 471             /*
 472              * XXX: Where should this be unmapped?
 473              */
 474             struct llvmpipe_screen *screen = llvmpipe_screen(img->screen);
 475             struct sw_winsys *winsys = screen->winsys;
 476             addr = winsys->displaytarget_map(winsys, lp_img->dt,
 477                                                 PIPE_TRANSFER_READ);
 478             row_stride = lp_img->row_stride[0];
 479             img_stride = lp_img->img_stride[0];
 480             sample_stride = 0;
 481             assert(addr);
 482          }
 483          draw_set_mapped_image(lp->draw,
 484                                shader_type,
 485                                i,
 486                                width, height, num_layers,
 487                                addr,
 488                                row_stride, img_stride,
 489                                num_samples, sample_stride);
 490       }
 491    }
 492 }
 493
 494
 495 /**
 496  * Called whenever we're about to draw (no dirty flag, FIXME?).
 497  */
 498 void
 499 llvmpipe_prepare_vertex_images(struct llvmpipe_context *lp,
 500                                unsigned num,
 501                                struct pipe_image_view *views)
 502 {
 503    prepare_shader_images(lp, num, views, PIPE_SHADER_VERTEX);
 504 }
 505
 506
 507 /**
 508  * Called whenever we're about to draw (no dirty flag, FIXME?).
 509  */
 510 void
 511 llvmpipe_prepare_geometry_images(struct llvmpipe_context *lp,
 512                                  unsigned num,
 513                                  struct pipe_image_view *views)
 514 {
 515    prepare_shader_images(lp, num, views, PIPE_SHADER_GEOMETRY);
 516 }
 517
 518 /**
 519  * Called whenever we're about to draw (no dirty flag, FIXME?).
 520  */
 521 void
 522 llvmpipe_prepare_tess_ctrl_images(struct llvmpipe_context *lp,
 523                                   unsigned num,
 524                                   struct pipe_image_view *views)
 525 {
 526    prepare_shader_images(lp, num, views, PIPE_SHADER_TESS_CTRL);
 527 }
 528
 529 /**
 530  * Called whenever we're about to draw (no dirty flag, FIXME?).
 531  */
 532 void
 533 llvmpipe_prepare_tess_eval_images(struct llvmpipe_context *lp,
 534                                   unsigned num,
 535                                   struct pipe_image_view *views)
 536 {
 537    prepare_shader_images(lp, num, views, PIPE_SHADER_TESS_EVAL);
 538 }
 539
 540 void
 541 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 542 {
 543    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 544
 545    llvmpipe->pipe.bind_sampler_states = llvmpipe_bind_sampler_states;
 546    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
 547    llvmpipe->pipe.set_sampler_views = llvmpipe_set_sampler_views;
 548    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
 549    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 550 }