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