src/gallium/drivers/llvmpipe/lp_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_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                              unsigned 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 <= Elements(llvmpipe->samplers[shader]));
  79
  80    /* Check for no-op */
  81    if (start + num <= llvmpipe->num_samplers[shader] &&
  82        !memcmp(llvmpipe->samplers[shader] + start, samplers,
  83                num * sizeof(void *))) {
  84       return;
  85    }
  86
  87    draw_flush(llvmpipe->draw);
  88
  89    /* set the new samplers */
  90    for (i = 0; i < num; i++) {
  91       llvmpipe->samplers[shader][start + i] = samplers[i];
  92    }
  93
  94    /* find highest non-null samplers[] entry */
  95    {
  96       unsigned j = MAX2(llvmpipe->num_samplers[shader], start + num);
  97       while (j > 0 && llvmpipe->samplers[shader][j - 1] == NULL)
  98          j--;
  99       llvmpipe->num_samplers[shader] = j;
 100    }
 101
 102    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
 103       draw_set_samplers(llvmpipe->draw,
 104                         shader,
 105                         llvmpipe->samplers[shader],
 106                         llvmpipe->num_samplers[shader]);
 107    }
 108
 109    llvmpipe->dirty |= LP_NEW_SAMPLER;
 110 }
 111
 112
 113 static void
 114 llvmpipe_bind_fragment_sampler_states(struct pipe_context *pipe,
 115                                       unsigned num, void **samplers)
 116 {
 117    llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_FRAGMENT, 0, num, samplers);
 118 }
 119
 120
 121 static void
 122 llvmpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
 123                                     unsigned num, void **samplers)
 124 {
 125    llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_VERTEX, 0, num, samplers);
 126 }
 127
 128
 129 static void
 130 llvmpipe_bind_geometry_sampler_states(struct pipe_context *pipe,
 131                                       unsigned num, void **samplers)
 132 {
 133    llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_GEOMETRY, 0, num, samplers);
 134 }
 135
 136 static void
 137 llvmpipe_set_sampler_views(struct pipe_context *pipe,
 138                            unsigned shader,
 139                            unsigned start,
 140                            unsigned num,
 141                            struct pipe_sampler_view **views)
 142 {
 143    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 144    uint i;
 145
 146    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 147
 148    assert(shader < PIPE_SHADER_TYPES);
 149    assert(start + num <= Elements(llvmpipe->sampler_views[shader]));
 150
 151    /* Check for no-op */
 152    if (start + num <= llvmpipe->num_sampler_views[shader] &&
 153        !memcmp(llvmpipe->sampler_views[shader] + start, views,
 154                num * sizeof(struct pipe_sampler_view *))) {
 155       return;
 156    }
 157
 158    draw_flush(llvmpipe->draw);
 159
 160    /* set the new sampler views */
 161    for (i = 0; i < num; i++) {
 162       pipe_sampler_view_reference(&llvmpipe->sampler_views[shader][start + i],
 163                                   views[i]);
 164    }
 165
 166    /* find highest non-null sampler_views[] entry */
 167    {
 168       unsigned j = MAX2(llvmpipe->num_sampler_views[shader], start + num);
 169       while (j > 0 && llvmpipe->sampler_views[shader][j - 1] == NULL)
 170          j--;
 171       llvmpipe->num_sampler_views[shader] = j;
 172    }
 173
 174    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
 175       draw_set_sampler_views(llvmpipe->draw,
 176                              shader,
 177                              llvmpipe->sampler_views[shader],
 178                              llvmpipe->num_sampler_views[shader]);
 179    }
 180
 181    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 182 }
 183
 184
 185 static void
 186 llvmpipe_set_fragment_sampler_views(struct pipe_context *pipe,
 187                                     unsigned num,
 188                                     struct pipe_sampler_view **views)
 189 {
 190    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0, num, views);
 191 }
 192
 193
 194 static void
 195 llvmpipe_set_vertex_sampler_views(struct pipe_context *pipe,
 196                                   unsigned num,
 197                                   struct pipe_sampler_view **views)
 198 {
 199    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_VERTEX, 0, num, views);
 200 }
 201
 202
 203 static void
 204 llvmpipe_set_geometry_sampler_views(struct pipe_context *pipe,
 205                                     unsigned num,
 206                                     struct pipe_sampler_view **views)
 207 {
 208    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_GEOMETRY, 0, num, views);
 209 }
 210
 211 static struct pipe_sampler_view *
 212 llvmpipe_create_sampler_view(struct pipe_context *pipe,
 213                             struct pipe_resource *texture,
 214                             const struct pipe_sampler_view *templ)
 215 {
 216    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
 217    /*
 218     * XXX we REALLY want to see the correct bind flag here but the OpenGL
 219     * state tracker can't guarantee that at least for texture buffer objects.
 220     */
 221    if (!(texture->bind & PIPE_BIND_SAMPLER_VIEW))
 222       debug_printf("Illegal sampler view creation without bind flag\n");
 223
 224    if (view) {
 225       *view = *templ;
 226       view->reference.count = 1;
 227       view->texture = NULL;
 228       pipe_resource_reference(&view->texture, texture);
 229       view->context = pipe;
 230    }
 231
 232    return view;
 233 }
 234
 235
 236 static void
 237 llvmpipe_sampler_view_destroy(struct pipe_context *pipe,
 238                               struct pipe_sampler_view *view)
 239 {
 240    pipe_resource_reference(&view->texture, NULL);
 241    FREE(view);
 242 }
 243
 244
 245 static void
 246 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 247                               void *sampler)
 248 {
 249    FREE( sampler );
 250 }
 251
 252
 253 static void
 254 prepare_shader_sampling(
 255    struct llvmpipe_context *lp,
 256    unsigned num,
 257    struct pipe_sampler_view **views,
 258    unsigned shader_type,
 259    struct pipe_resource *mapped_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS])
 260 {
 261
 262    unsigned i;
 263    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
 264    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
 265    uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
 266    const void *addr;
 267
 268    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 269    if (!num)
 270       return;
 271
 272    for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
 273       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 274
 275       if (view) {
 276          struct pipe_resource *tex = view->texture;
 277          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 278          unsigned width0 = tex->width0;
 279          unsigned num_layers = tex->depth0;
 280          unsigned first_level = 0;
 281          unsigned last_level = 0;
 282
 283          /* We're referencing the texture's internal data, so save a
 284           * reference to it.
 285           */
 286          pipe_resource_reference(&mapped_tex[i], tex);
 287
 288          if (!lp_tex->dt) {
 289             /* regular texture - setup array of mipmap level offsets */
 290             struct pipe_resource *res = view->texture;
 291             int j;
 292             void *mip_ptr;
 293
 294             if (llvmpipe_resource_is_texture(res)) {
 295                first_level = view->u.tex.first_level;
 296                last_level = view->u.tex.last_level;
 297                assert(first_level <= last_level);
 298                assert(last_level <= res->last_level);
 299
 300                /* must trigger allocation first before we can get base ptr */
 301                /* XXX this may fail due to OOM ? */
 302                mip_ptr = llvmpipe_get_texture_image_all(lp_tex, view->u.tex.first_level,
 303                                                         LP_TEX_USAGE_READ);
 304                addr = lp_tex->linear_img.data;
 305
 306                for (j = first_level; j <= last_level; j++) {
 307                   mip_ptr = llvmpipe_get_texture_image_all(lp_tex, j,
 308                                                            LP_TEX_USAGE_READ);
 309                   mip_offsets[j] = (uint8_t *)mip_ptr - (uint8_t *)addr;
 310                   /*
 311                    * could get mip offset directly but need call above to
 312                    * invoke tiled->linear conversion.
 313                    */
 314                   assert(lp_tex->linear_mip_offsets[j] == mip_offsets[j]);
 315                   row_stride[j] = lp_tex->row_stride[j];
 316                   img_stride[j] = lp_tex->img_stride[j];
 317                }
 318                if (res->target == PIPE_TEXTURE_1D_ARRAY ||
 319                    res->target == PIPE_TEXTURE_2D_ARRAY) {
 320                   num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 321                   for (j = first_level; j <= last_level; j++) {
 322                      mip_offsets[j] += view->u.tex.first_layer *
 323                                        lp_tex->img_stride[j];
 324                   }
 325                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
 326                   assert(view->u.tex.last_layer < res->array_size);
 327                }
 328             }
 329             else {
 330                unsigned view_blocksize = util_format_get_blocksize(view->format);
 331                mip_ptr = lp_tex->data;
 332                addr = mip_ptr;
 333                /* probably don't really need to fill that out */
 334                mip_offsets[0] = 0;
 335                row_stride[0] = 0;
 336                row_stride[0] = 0;
 337
 338                /* everything specified in number of elements here. */
 339                width0 = view->u.buf.last_element - view->u.buf.first_element + 1;
 340                addr = (uint8_t *)addr + view->u.buf.first_element *
 341                                view_blocksize;
 342                assert(view->u.buf.first_element <= view->u.buf.last_element);
 343                assert(view->u.buf.last_element * view_blocksize < res->width0);
 344             }
 345          }
 346          else {
 347             /* display target texture/surface */
 348             /*
 349              * XXX: Where should this be unmapped?
 350              */
 351             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 352             struct sw_winsys *winsys = screen->winsys;
 353             addr = winsys->displaytarget_map(winsys, lp_tex->dt,
 354                                                 PIPE_TRANSFER_READ);
 355             row_stride[0] = lp_tex->row_stride[0];
 356             img_stride[0] = lp_tex->img_stride[0];
 357             mip_offsets[0] = 0;
 358             assert(addr);
 359          }
 360          draw_set_mapped_texture(lp->draw,
 361                                  shader_type,
 362                                  i,
 363                                  width0, tex->height0, num_layers,
 364                                  first_level, last_level,
 365                                  addr,
 366                                  row_stride, img_stride, mip_offsets);
 367       }
 368    }
 369 }
 370
 371
 372 /**
 373  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 374  */
 375 void
 376 llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
 377                                  unsigned num,
 378                                  struct pipe_sampler_view **views)
 379 {
 380    prepare_shader_sampling(lp, num, views, PIPE_SHADER_VERTEX,
 381                            lp->mapped_vs_tex);
 382 }
 383
 384 void
 385 llvmpipe_cleanup_vertex_sampling(struct llvmpipe_context *ctx)
 386 {
 387    unsigned i;
 388    for (i = 0; i < Elements(ctx->mapped_vs_tex); i++) {
 389       pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
 390    }
 391 }
 392
 393
 394 /**
 395  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 396  */
 397 void
 398 llvmpipe_prepare_geometry_sampling(struct llvmpipe_context *lp,
 399                                    unsigned num,
 400                                    struct pipe_sampler_view **views)
 401 {
 402    prepare_shader_sampling(lp, num, views, PIPE_SHADER_GEOMETRY,
 403                            lp->mapped_gs_tex);
 404 }
 405
 406 void
 407 llvmpipe_cleanup_geometry_sampling(struct llvmpipe_context *ctx)
 408 {
 409    unsigned i;
 410    for (i = 0; i < Elements(ctx->mapped_gs_tex); i++) {
 411       pipe_resource_reference(&ctx->mapped_gs_tex[i], NULL);
 412    }
 413 }
 414
 415 void
 416 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 417 {
 418    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 419
 420    llvmpipe->pipe.bind_fragment_sampler_states  = llvmpipe_bind_fragment_sampler_states;
 421    llvmpipe->pipe.bind_vertex_sampler_states  = llvmpipe_bind_vertex_sampler_states;
 422    llvmpipe->pipe.bind_geometry_sampler_states  = llvmpipe_bind_geometry_sampler_states;
 423    llvmpipe->pipe.set_fragment_sampler_views = llvmpipe_set_fragment_sampler_views;
 424    llvmpipe->pipe.set_vertex_sampler_views = llvmpipe_set_vertex_sampler_views;
 425    llvmpipe->pipe.set_geometry_sampler_views = llvmpipe_set_geometry_sampler_views;
 426    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
 427    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
 428    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 429 }