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