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
   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 /* 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
  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                sample_stride = lp_tex->sample_stride;
 287
 288                for (j = first_level; j <= last_level; j++) {
 289                   mip_offsets[j] = lp_tex->mip_offsets[j];
 290                   row_stride[j] = lp_tex->row_stride[j];
 291                   img_stride[j] = lp_tex->img_stride[j];
 292                }
 293                if (tex->target == PIPE_TEXTURE_1D_ARRAY ||
 294                    tex->target == PIPE_TEXTURE_2D_ARRAY ||
 295                    tex->target == PIPE_TEXTURE_CUBE ||
 296                    tex->target == PIPE_TEXTURE_CUBE_ARRAY) {
 297                   num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 298                   for (j = first_level; j <= last_level; j++) {
 299                      mip_offsets[j] += view->u.tex.first_layer *
 300                                        lp_tex->img_stride[j];
 301                   }
 302                   if (view->target == PIPE_TEXTURE_CUBE ||
 303                       view->target == PIPE_TEXTURE_CUBE_ARRAY) {
 304                      assert(num_layers % 6 == 0);
 305                   }
 306                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
 307                   assert(view->u.tex.last_layer < res->array_size);
 308                }
 309             }
 310             else {
 311                unsigned view_blocksize = util_format_get_blocksize(view->format);
 312                addr = lp_tex->data;
 313                /* probably don't really need to fill that out */
 314                mip_offsets[0] = 0;
 315                row_stride[0] = 0;
 316                img_stride[0] = 0;
 317
 318                /* everything specified in number of elements here. */
 319                width0 = view->u.buf.size / view_blocksize;
 320                addr = (uint8_t *)addr + view->u.buf.offset;
 321                assert(view->u.buf.offset + view->u.buf.size <= res->width0);
 322             }
 323          }
 324          else {
 325             /* display target texture/surface */
 326             /*
 327              * XXX: Where should this be unmapped?
 328              */
 329             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 330             struct sw_winsys *winsys = screen->winsys;
 331             addr = winsys->displaytarget_map(winsys, lp_tex->dt,
 332                                                 PIPE_TRANSFER_READ);
 333             row_stride[0] = lp_tex->row_stride[0];
 334             img_stride[0] = lp_tex->img_stride[0];
 335             mip_offsets[0] = 0;
 336             assert(addr);
 337          }
 338          draw_set_mapped_texture(lp->draw,
 339                                  shader_type,
 340                                  i,
 341                                  width0, tex->height0, num_layers,
 342                                  first_level, last_level,
 343                                  num_samples, sample_stride,
 344                                  addr,
 345                                  row_stride, img_stride, mip_offsets);
 346       }
 347    }
 348 }
 349
 350
 351 /**
 352  * Called whenever we're about to draw (no dirty flag, FIXME?).
 353  */
 354 void
 355 llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
 356                                  unsigned num,
 357                                  struct pipe_sampler_view **views)
 358 {
 359    prepare_shader_sampling(lp, num, views, PIPE_SHADER_VERTEX);
 360 }
 361
 362
 363 /**
 364  * Called whenever we're about to draw (no dirty flag, FIXME?).
 365  */
 366 void
 367 llvmpipe_prepare_geometry_sampling(struct llvmpipe_context *lp,
 368                                    unsigned num,
 369                                    struct pipe_sampler_view **views)
 370 {
 371    prepare_shader_sampling(lp, num, views, PIPE_SHADER_GEOMETRY);
 372 }
 373
 374 /**
 375  * Called whenever we're about to draw (no dirty flag, FIXME?).
 376  */
 377 void
 378 llvmpipe_prepare_tess_ctrl_sampling(struct llvmpipe_context *lp,
 379                                     unsigned num,
 380                                     struct pipe_sampler_view **views)
 381 {
 382    prepare_shader_sampling(lp, num, views, PIPE_SHADER_TESS_CTRL);
 383 }
 384
 385 /**
 386  * Called whenever we're about to draw (no dirty flag, FIXME?).
 387  */
 388 void
 389 llvmpipe_prepare_tess_eval_sampling(struct llvmpipe_context *lp,
 390                                     unsigned num,
 391                                     struct pipe_sampler_view **views)
 392 {
 393    prepare_shader_sampling(lp, num, views, PIPE_SHADER_TESS_EVAL);
 394 }
 395
 396 static void
 397 prepare_shader_images(
 398    struct llvmpipe_context *lp,
 399    unsigned num,
 400    struct pipe_image_view *views,
 401    enum pipe_shader_type shader_type)
 402 {
 403
 404    unsigned i;
 405    uint32_t row_stride;
 406    uint32_t img_stride;
 407    uint32_t sample_stride;
 408    const void *addr;
 409
 410    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 411    if (!num)
 412       return;
 413
 414    for (i = 0; i < num; i++) {
 415       struct pipe_image_view *view = i < num ? &views[i] : NULL;
 416
 417       if (view) {
 418          struct pipe_resource *img = view->resource;
 419          struct llvmpipe_resource *lp_img = llvmpipe_resource(img);
 420          if (!img)
 421             continue;
 422
 423          unsigned width = u_minify(img->width0, view->u.tex.level);
 424          unsigned height = u_minify(img->height0, view->u.tex.level);
 425          unsigned num_layers = img->depth0;
 426          unsigned num_samples = img->nr_samples;
 427
 428          if (!lp_img->dt) {
 429             /* regular texture - setup array of mipmap level offsets */
 430             struct pipe_resource *res = view->resource;
 431
 432             if (llvmpipe_resource_is_texture(res)) {
 433                uint32_t mip_offset = lp_img->mip_offsets[view->u.tex.level];
 434                addr = lp_img->tex_data;
 435
 436                if (img->target == PIPE_TEXTURE_1D_ARRAY ||
 437                    img->target == PIPE_TEXTURE_2D_ARRAY ||
 438                    img->target == PIPE_TEXTURE_3D ||
 439                    img->target == PIPE_TEXTURE_CUBE ||
 440                    img->target == PIPE_TEXTURE_CUBE_ARRAY) {
 441                   num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 442                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
 443                   mip_offset += view->u.tex.first_layer * lp_img->img_stride[view->u.tex.level];
 444                }
 445
 446                row_stride = lp_img->row_stride[view->u.tex.level];
 447                img_stride = lp_img->img_stride[view->u.tex.level];
 448                sample_stride = lp_img->sample_stride;
 449                addr = (uint8_t *)addr + mip_offset;
 450             }
 451             else {
 452                unsigned view_blocksize = util_format_get_blocksize(view->format);
 453                addr = lp_img->data;
 454                /* probably don't really need to fill that out */
 455                row_stride = 0;
 456                img_stride = 0;
 457                sample_stride = 0;
 458
 459                /* everything specified in number of elements here. */
 460                width = view->u.buf.size / view_blocksize;
 461                addr = (uint8_t *)addr + view->u.buf.offset;
 462                assert(view->u.buf.offset + view->u.buf.size <= res->width0);
 463             }
 464          }
 465          else {
 466             /* display target texture/surface */
 467             /*
 468              * XXX: Where should this be unmapped?
 469              */
 470             struct llvmpipe_screen *screen = llvmpipe_screen(img->screen);
 471             struct sw_winsys *winsys = screen->winsys;
 472             addr = winsys->displaytarget_map(winsys, lp_img->dt,
 473                                                 PIPE_TRANSFER_READ);
 474             row_stride = lp_img->row_stride[0];
 475             img_stride = lp_img->img_stride[0];
 476             sample_stride = 0;
 477             assert(addr);
 478          }
 479          draw_set_mapped_image(lp->draw,
 480                                shader_type,
 481                                i,
 482                                width, height, num_layers,
 483                                addr,
 484                                row_stride, img_stride,
 485                                num_samples, sample_stride);
 486       }
 487    }
 488 }
 489
 490
 491 /**
 492  * Called whenever we're about to draw (no dirty flag, FIXME?).
 493  */
 494 void
 495 llvmpipe_prepare_vertex_images(struct llvmpipe_context *lp,
 496                                unsigned num,
 497                                struct pipe_image_view *views)
 498 {
 499    prepare_shader_images(lp, num, views, PIPE_SHADER_VERTEX);
 500 }
 501
 502
 503 /**
 504  * Called whenever we're about to draw (no dirty flag, FIXME?).
 505  */
 506 void
 507 llvmpipe_prepare_geometry_images(struct llvmpipe_context *lp,
 508                                  unsigned num,
 509                                  struct pipe_image_view *views)
 510 {
 511    prepare_shader_images(lp, num, views, PIPE_SHADER_GEOMETRY);
 512 }
 513
 514 /**
 515  * Called whenever we're about to draw (no dirty flag, FIXME?).
 516  */
 517 void
 518 llvmpipe_prepare_tess_ctrl_images(struct llvmpipe_context *lp,
 519                                   unsigned num,
 520                                   struct pipe_image_view *views)
 521 {
 522    prepare_shader_images(lp, num, views, PIPE_SHADER_TESS_CTRL);
 523 }
 524
 525 /**
 526  * Called whenever we're about to draw (no dirty flag, FIXME?).
 527  */
 528 void
 529 llvmpipe_prepare_tess_eval_images(struct llvmpipe_context *lp,
 530                                   unsigned num,
 531                                   struct pipe_image_view *views)
 532 {
 533    prepare_shader_images(lp, num, views, PIPE_SHADER_TESS_EVAL);
 534 }
 535
 536 void
 537 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 538 {
 539    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 540
 541    llvmpipe->pipe.bind_sampler_states = llvmpipe_bind_sampler_states;
 542    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
 543    llvmpipe->pipe.set_sampler_views = llvmpipe_set_sampler_views;
 544    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
 545    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 546 }