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 {
 102       llvmpipe->dirty |= LP_NEW_SAMPLER;
 103    }
 104 }
 105
 106
 107 static void
 108 llvmpipe_set_sampler_views(struct pipe_context *pipe,
 109                            enum pipe_shader_type shader,
 110                            unsigned start,
 111                            unsigned num,
 112                            struct pipe_sampler_view **views)
 113 {
 114    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 115    uint i;
 116
 117    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 118
 119    assert(shader < PIPE_SHADER_TYPES);
 120    assert(start + num <= ARRAY_SIZE(llvmpipe->sampler_views[shader]));
 121
 122    draw_flush(llvmpipe->draw);
 123
 124    /* set the new sampler views */
 125    for (i = 0; i < num; i++) {
 126       /*
 127        * Warn if someone tries to set a view created in a different context
 128        * (which is why we need the hack above in the first place).
 129        * An assert would be better but st/mesa relies on it...
 130        */
 131       if (views[i] && views[i]->context != pipe) {
 132          debug_printf("Illegal setting of sampler_view %d created in another "
 133                       "context\n", i);
 134       }
 135       pipe_sampler_view_reference(&llvmpipe->sampler_views[shader][start + i],
 136                                   views[i]);
 137    }
 138
 139    /* find highest non-null sampler_views[] entry */
 140    {
 141       unsigned j = MAX2(llvmpipe->num_sampler_views[shader], start + num);
 142       while (j > 0 && llvmpipe->sampler_views[shader][j - 1] == NULL)
 143          j--;
 144       llvmpipe->num_sampler_views[shader] = j;
 145    }
 146
 147    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
 148       draw_set_sampler_views(llvmpipe->draw,
 149                              shader,
 150                              llvmpipe->sampler_views[shader],
 151                              llvmpipe->num_sampler_views[shader]);
 152    }
 153    else {
 154       llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 155    }
 156 }
 157
 158
 159 static struct pipe_sampler_view *
 160 llvmpipe_create_sampler_view(struct pipe_context *pipe,
 161                             struct pipe_resource *texture,
 162                             const struct pipe_sampler_view *templ)
 163 {
 164    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
 165    /*
 166     * XXX: bind flags from OpenGL state tracker are notoriously unreliable.
 167     * This looks unfixable, so fix the bind flags instead when it happens.
 168     */
 169    if (!(texture->bind & PIPE_BIND_SAMPLER_VIEW)) {
 170       debug_printf("Illegal sampler view creation without bind flag\n");
 171       texture->bind |= PIPE_BIND_SAMPLER_VIEW;
 172    }
 173
 174    if (view) {
 175       *view = *templ;
 176       view->reference.count = 1;
 177       view->texture = NULL;
 178       pipe_resource_reference(&view->texture, texture);
 179       view->context = pipe;
 180
 181 #ifdef DEBUG
 182      /*
 183       * This is possibly too lenient, but the primary reason is just
 184       * to catch state trackers which forget to initialize this, so
 185       * it only catches clearly impossible view targets.
 186       */
 187       if (view->target != texture->target) {
 188          if (view->target == PIPE_TEXTURE_1D)
 189             assert(texture->target == PIPE_TEXTURE_1D_ARRAY);
 190          else if (view->target == PIPE_TEXTURE_1D_ARRAY)
 191             assert(texture->target == PIPE_TEXTURE_1D);
 192          else if (view->target == PIPE_TEXTURE_2D)
 193             assert(texture->target == PIPE_TEXTURE_2D_ARRAY ||
 194                    texture->target == PIPE_TEXTURE_CUBE ||
 195                    texture->target == PIPE_TEXTURE_CUBE_ARRAY);
 196          else if (view->target == PIPE_TEXTURE_2D_ARRAY)
 197             assert(texture->target == PIPE_TEXTURE_2D ||
 198                    texture->target == PIPE_TEXTURE_CUBE ||
 199                    texture->target == PIPE_TEXTURE_CUBE_ARRAY);
 200          else if (view->target == PIPE_TEXTURE_CUBE)
 201             assert(texture->target == PIPE_TEXTURE_CUBE_ARRAY ||
 202                    texture->target == PIPE_TEXTURE_2D_ARRAY);
 203          else if (view->target == PIPE_TEXTURE_CUBE_ARRAY)
 204             assert(texture->target == PIPE_TEXTURE_CUBE ||
 205                    texture->target == PIPE_TEXTURE_2D_ARRAY);
 206          else
 207             assert(0);
 208       }
 209 #endif
 210    }
 211
 212    return view;
 213 }
 214
 215
 216 static void
 217 llvmpipe_sampler_view_destroy(struct pipe_context *pipe,
 218                               struct pipe_sampler_view *view)
 219 {
 220    pipe_resource_reference(&view->texture, NULL);
 221    FREE(view);
 222 }
 223
 224
 225 static void
 226 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 227                               void *sampler)
 228 {
 229    FREE( sampler );
 230 }
 231
 232
 233 static void
 234 prepare_shader_sampling(
 235    struct llvmpipe_context *lp,
 236    unsigned num,
 237    struct pipe_sampler_view **views,
 238    enum pipe_shader_type shader_type)
 239 {
 240
 241    unsigned i;
 242    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
 243    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
 244    uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
 245    const void *addr;
 246
 247    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 248    if (!num)
 249       return;
 250
 251    for (i = 0; i < num; i++) {
 252       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 253
 254       if (view) {
 255          struct pipe_resource *tex = view->texture;
 256          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 257          unsigned width0 = tex->width0;
 258          unsigned num_layers = tex->depth0;
 259          unsigned first_level = 0;
 260          unsigned last_level = 0;
 261
 262          if (!lp_tex->dt) {
 263             /* regular texture - setup array of mipmap level offsets */
 264             struct pipe_resource *res = view->texture;
 265             int j;
 266
 267             if (llvmpipe_resource_is_texture(res)) {
 268                first_level = view->u.tex.first_level;
 269                last_level = view->u.tex.last_level;
 270                assert(first_level <= last_level);
 271                assert(last_level <= res->last_level);
 272                addr = lp_tex->tex_data;
 273
 274                for (j = first_level; j <= last_level; j++) {
 275                   mip_offsets[j] = lp_tex->mip_offsets[j];
 276                   row_stride[j] = lp_tex->row_stride[j];
 277                   img_stride[j] = lp_tex->img_stride[j];
 278                }
 279                if (tex->target == PIPE_TEXTURE_1D_ARRAY ||
 280                    tex->target == PIPE_TEXTURE_2D_ARRAY ||
 281                    tex->target == PIPE_TEXTURE_CUBE ||
 282                    tex->target == PIPE_TEXTURE_CUBE_ARRAY) {
 283                   num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
 284                   for (j = first_level; j <= last_level; j++) {
 285                      mip_offsets[j] += view->u.tex.first_layer *
 286                                        lp_tex->img_stride[j];
 287                   }
 288                   if (view->target == PIPE_TEXTURE_CUBE ||
 289                       view->target == PIPE_TEXTURE_CUBE_ARRAY) {
 290                      assert(num_layers % 6 == 0);
 291                   }
 292                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
 293                   assert(view->u.tex.last_layer < res->array_size);
 294                }
 295             }
 296             else {
 297                unsigned view_blocksize = util_format_get_blocksize(view->format);
 298                addr = lp_tex->data;
 299                /* probably don't really need to fill that out */
 300                mip_offsets[0] = 0;
 301                row_stride[0] = 0;
 302                img_stride[0] = 0;
 303
 304                /* everything specified in number of elements here. */
 305                width0 = view->u.buf.size / view_blocksize;
 306                addr = (uint8_t *)addr + view->u.buf.offset;
 307                assert(view->u.buf.offset + view->u.buf.size <= res->width0);
 308             }
 309          }
 310          else {
 311             /* display target texture/surface */
 312             /*
 313              * XXX: Where should this be unmapped?
 314              */
 315             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 316             struct sw_winsys *winsys = screen->winsys;
 317             addr = winsys->displaytarget_map(winsys, lp_tex->dt,
 318                                                 PIPE_TRANSFER_READ);
 319             row_stride[0] = lp_tex->row_stride[0];
 320             img_stride[0] = lp_tex->img_stride[0];
 321             mip_offsets[0] = 0;
 322             assert(addr);
 323          }
 324          draw_set_mapped_texture(lp->draw,
 325                                  shader_type,
 326                                  i,
 327                                  width0, tex->height0, num_layers,
 328                                  first_level, last_level,
 329                                  addr,
 330                                  row_stride, img_stride, mip_offsets);
 331       }
 332    }
 333 }
 334
 335
 336 /**
 337  * Called whenever we're about to draw (no dirty flag, FIXME?).
 338  */
 339 void
 340 llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
 341                                  unsigned num,
 342                                  struct pipe_sampler_view **views)
 343 {
 344    prepare_shader_sampling(lp, num, views, PIPE_SHADER_VERTEX);
 345 }
 346
 347
 348 /**
 349  * Called whenever we're about to draw (no dirty flag, FIXME?).
 350  */
 351 void
 352 llvmpipe_prepare_geometry_sampling(struct llvmpipe_context *lp,
 353                                    unsigned num,
 354                                    struct pipe_sampler_view **views)
 355 {
 356    prepare_shader_sampling(lp, num, views, PIPE_SHADER_GEOMETRY);
 357 }
 358
 359
 360 void
 361 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 362 {
 363    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 364
 365    llvmpipe->pipe.bind_sampler_states = llvmpipe_bind_sampler_states;
 366    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
 367    llvmpipe->pipe.set_sampler_views = llvmpipe_set_sampler_views;
 368    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
 369    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 370 }