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_set_sampler_views(struct pipe_context *pipe,
 115                            unsigned 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 <= Elements(llvmpipe->sampler_views[shader]));
 127
 128    /* Check for no-op */
 129    if (start + num <= llvmpipe->num_sampler_views[shader] &&
 130        !memcmp(llvmpipe->sampler_views[shader] + start, views,
 131                num * sizeof(struct pipe_sampler_view *))) {
 132       return;
 133    }
 134
 135    draw_flush(llvmpipe->draw);
 136
 137    /* set the new sampler views */
 138    for (i = 0; i < num; i++) {
 139       pipe_sampler_view_reference(&llvmpipe->sampler_views[shader][start + i],
 140                                   views[i]);
 141    }
 142
 143    /* find highest non-null sampler_views[] entry */
 144    {
 145       unsigned j = MAX2(llvmpipe->num_sampler_views[shader], start + num);
 146       while (j > 0 && llvmpipe->sampler_views[shader][j - 1] == NULL)
 147          j--;
 148       llvmpipe->num_sampler_views[shader] = j;
 149    }
 150
 151    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
 152       draw_set_sampler_views(llvmpipe->draw,
 153                              shader,
 154                              llvmpipe->sampler_views[shader],
 155                              llvmpipe->num_sampler_views[shader]);
 156    }
 157
 158    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 159 }
 160
 161
 162 static void
 163 llvmpipe_set_fragment_sampler_views(struct pipe_context *pipe,
 164                                     unsigned num,
 165                                     struct pipe_sampler_view **views)
 166 {
 167    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0, num, views);
 168 }
 169
 170
 171 static void
 172 llvmpipe_set_vertex_sampler_views(struct pipe_context *pipe,
 173                                   unsigned num,
 174                                   struct pipe_sampler_view **views)
 175 {
 176    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_VERTEX, 0, num, views);
 177 }
 178
 179
 180 static void
 181 llvmpipe_set_geometry_sampler_views(struct pipe_context *pipe,
 182                                     unsigned num,
 183                                     struct pipe_sampler_view **views)
 184 {
 185    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_GEOMETRY, 0, num, views);
 186 }
 187
 188 static struct pipe_sampler_view *
 189 llvmpipe_create_sampler_view(struct pipe_context *pipe,
 190                             struct pipe_resource *texture,
 191                             const struct pipe_sampler_view *templ)
 192 {
 193    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
 194    /*
 195     * XXX we REALLY want to see the correct bind flag here but the OpenGL
 196     * state tracker can't guarantee that at least for texture buffer objects.
 197     */
 198    if (!(texture->bind & PIPE_BIND_SAMPLER_VIEW))
 199       debug_printf("Illegal sampler view creation without bind flag\n");
 200
 201    if (view) {
 202       *view = *templ;
 203       view->reference.count = 1;
 204       view->texture = NULL;
 205       pipe_resource_reference(&view->texture, texture);
 206       view->context = pipe;
 207    }
 208
 209    return view;
 210 }
 211
 212
 213 static void
 214 llvmpipe_sampler_view_destroy(struct pipe_context *pipe,
 215                               struct pipe_sampler_view *view)
 216 {
 217    pipe_resource_reference(&view->texture, NULL);
 218    FREE(view);
 219 }
 220
 221
 222 static void
 223 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 224                               void *sampler)
 225 {
 226    FREE( sampler );
 227 }
 228
 229
 230 static void
 231 prepare_shader_sampling(
 232    struct llvmpipe_context *lp,
 233    unsigned num,
 234    struct pipe_sampler_view **views,
 235    unsigned shader_type,
 236    struct pipe_resource *mapped_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS])
 237 {
 238
 239    unsigned i;
 240    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
 241    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
 242    uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
 243    const void *addr;
 244
 245    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 246    if (!num)
 247       return;
 248
 249    for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
 250       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 251
 252       if (view) {
 253          struct pipe_resource *tex = view->texture;
 254          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 255          unsigned width0 = tex->width0;
 256          unsigned num_layers = tex->depth0;
 257          unsigned first_level = 0;
 258          unsigned last_level = 0;
 259
 260          /* We're referencing the texture's internal data, so save a
 261           * reference to it.
 262           */
 263          pipe_resource_reference(&mapped_tex[i], tex);
 264
 265          if (!lp_tex->dt) {
 266             /* regular texture - setup array of mipmap level offsets */
 267             struct pipe_resource *res = view->texture;
 268             int j;
 269             void *mip_ptr;
 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
 277                /* must trigger allocation first before we can get base ptr */
 278                /* XXX this may fail due to OOM ? */
 279                mip_ptr = llvmpipe_get_texture_image_all(lp_tex, view->u.tex.first_level,
 280                                                         LP_TEX_USAGE_READ);
 281                addr = lp_tex->linear_img.data;
 282
 283                for (j = first_level; j <= last_level; j++) {
 284                   mip_ptr = llvmpipe_get_texture_image_all(lp_tex, j,
 285                                                            LP_TEX_USAGE_READ);
 286                   mip_offsets[j] = (uint8_t *)mip_ptr - (uint8_t *)addr;
 287                   /*
 288                    * could get mip offset directly but need call above to
 289                    * invoke tiled->linear conversion.
 290                    */
 291                   assert(lp_tex->linear_mip_offsets[j] == mip_offsets[j]);
 292                   row_stride[j] = lp_tex->row_stride[j];
 293                   img_stride[j] = lp_tex->img_stride[j];
 294                }
 295                if (res->target == PIPE_TEXTURE_1D_ARRAY ||
 296                    res->target == PIPE_TEXTURE_2D_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                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
 303                   assert(view->u.tex.last_layer < res->array_size);
 304                }
 305             }
 306             else {
 307                unsigned view_blocksize = util_format_get_blocksize(view->format);
 308                mip_ptr = lp_tex->data;
 309                addr = mip_ptr;
 310                /* probably don't really need to fill that out */
 311                mip_offsets[0] = 0;
 312                row_stride[0] = 0;
 313                row_stride[0] = 0;
 314
 315                /* everything specified in number of elements here. */
 316                width0 = view->u.buf.last_element - view->u.buf.first_element + 1;
 317                addr = (uint8_t *)addr + view->u.buf.first_element *
 318                                view_blocksize;
 319                assert(view->u.buf.first_element <= view->u.buf.last_element);
 320                assert(view->u.buf.last_element * view_blocksize < res->width0);
 321             }
 322          }
 323          else {
 324             /* display target texture/surface */
 325             /*
 326              * XXX: Where should this be unmapped?
 327              */
 328             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 329             struct sw_winsys *winsys = screen->winsys;
 330             addr = winsys->displaytarget_map(winsys, lp_tex->dt,
 331                                                 PIPE_TRANSFER_READ);
 332             row_stride[0] = lp_tex->row_stride[0];
 333             img_stride[0] = lp_tex->img_stride[0];
 334             mip_offsets[0] = 0;
 335             assert(addr);
 336          }
 337          draw_set_mapped_texture(lp->draw,
 338                                  shader_type,
 339                                  i,
 340                                  width0, tex->height0, num_layers,
 341                                  first_level, last_level,
 342                                  addr,
 343                                  row_stride, img_stride, mip_offsets);
 344       }
 345    }
 346 }
 347
 348
 349 /**
 350  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 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                            lp->mapped_vs_tex);
 359 }
 360
 361 void
 362 llvmpipe_cleanup_vertex_sampling(struct llvmpipe_context *ctx)
 363 {
 364    unsigned i;
 365    for (i = 0; i < Elements(ctx->mapped_vs_tex); i++) {
 366       pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
 367    }
 368 }
 369
 370
 371 /**
 372  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 373  */
 374 void
 375 llvmpipe_prepare_geometry_sampling(struct llvmpipe_context *lp,
 376                                    unsigned num,
 377                                    struct pipe_sampler_view **views)
 378 {
 379    prepare_shader_sampling(lp, num, views, PIPE_SHADER_GEOMETRY,
 380                            lp->mapped_gs_tex);
 381 }
 382
 383 void
 384 llvmpipe_cleanup_geometry_sampling(struct llvmpipe_context *ctx)
 385 {
 386    unsigned i;
 387    for (i = 0; i < Elements(ctx->mapped_gs_tex); i++) {
 388       pipe_resource_reference(&ctx->mapped_gs_tex[i], NULL);
 389    }
 390 }
 391
 392 void
 393 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 394 {
 395    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 396
 397    llvmpipe->pipe.bind_sampler_states = llvmpipe_bind_sampler_states;
 398    llvmpipe->pipe.set_fragment_sampler_views = llvmpipe_set_fragment_sampler_views;
 399    llvmpipe->pipe.set_vertex_sampler_views = llvmpipe_set_vertex_sampler_views;
 400    llvmpipe->pipe.set_geometry_sampler_views = llvmpipe_set_geometry_sampler_views;
 401    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
 402    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
 403    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 404 }