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    if (view) {
 219       *view = *templ;
 220       view->reference.count = 1;
 221       view->texture = NULL;
 222       pipe_resource_reference(&view->texture, texture);
 223       view->context = pipe;
 224    }
 225
 226    return view;
 227 }
 228
 229
 230 static void
 231 llvmpipe_sampler_view_destroy(struct pipe_context *pipe,
 232                               struct pipe_sampler_view *view)
 233 {
 234    pipe_resource_reference(&view->texture, NULL);
 235    FREE(view);
 236 }
 237
 238
 239 static void
 240 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 241                               void *sampler)
 242 {
 243    FREE( sampler );
 244 }
 245
 246
 247 /**
 248  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 249  */
 250 void
 251 llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
 252                                  unsigned num,
 253                                  struct pipe_sampler_view **views)
 254 {
 255    unsigned i;
 256    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
 257    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
 258    uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
 259    const void *addr;
 260
 261    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
 262    if (!num)
 263       return;
 264
 265    for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
 266       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 267
 268       if (view) {
 269          struct pipe_resource *tex = view->texture;
 270          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 271          unsigned num_layers;
 272
 273          if (tex->target == PIPE_TEXTURE_3D) {
 274             num_layers = tex->depth0;
 275          }
 276          else {
 277             num_layers = tex->array_size;
 278          }
 279
 280          /* We're referencing the texture's internal data, so save a
 281           * reference to it.
 282           */
 283          pipe_resource_reference(&lp->mapped_vs_tex[i], tex);
 284
 285          if (!lp_tex->dt) {
 286             /* regular texture - setup array of mipmap level pointers */
 287             /* XXX this may fail due to OOM ? */
 288             int j;
 289             void *mip_ptr;
 290             /* must trigger allocation first before we can get base ptr */
 291             mip_ptr = llvmpipe_get_texture_image_all(lp_tex, view->u.tex.first_level,
 292                                                      LP_TEX_USAGE_READ,
 293                                                      LP_TEX_LAYOUT_LINEAR);
 294             addr = lp_tex->linear_img.data;
 295             for (j = view->u.tex.first_level; j <= tex->last_level; j++) {
 296                mip_ptr = llvmpipe_get_texture_image_all(lp_tex, j,
 297                                                         LP_TEX_USAGE_READ,
 298                                                         LP_TEX_LAYOUT_LINEAR);
 299                mip_offsets[j] = (uint8_t *)mip_ptr - (uint8_t *)addr;
 300                /*
 301                 * could get mip offset directly but need call above to
 302                 * invoke tiled->linear conversion.
 303                 */
 304                assert(lp_tex->linear_mip_offsets[j] == mip_offsets[j]);
 305                row_stride[j] = lp_tex->row_stride[j];
 306                img_stride[j] = lp_tex->img_stride[j];
 307             }
 308          }
 309          else {
 310             /* display target texture/surface */
 311             /*
 312              * XXX: Where should this be unmapped?
 313              */
 314             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 315             struct sw_winsys *winsys = screen->winsys;
 316             addr = winsys->displaytarget_map(winsys, lp_tex->dt,
 317                                                 PIPE_TRANSFER_READ);
 318             row_stride[0] = lp_tex->row_stride[0];
 319             img_stride[0] = lp_tex->img_stride[0];
 320             mip_offsets[0] = 0;
 321             assert(addr);
 322          }
 323          draw_set_mapped_texture(lp->draw,
 324                                  PIPE_SHADER_VERTEX,
 325                                  i,
 326                                  tex->width0, tex->height0, num_layers,
 327                                  view->u.tex.first_level, tex->last_level,
 328                                  addr,
 329                                  row_stride, img_stride, mip_offsets);
 330       }
 331    }
 332 }
 333
 334 void
 335 llvmpipe_cleanup_vertex_sampling(struct llvmpipe_context *ctx)
 336 {
 337    unsigned i;
 338    for (i = 0; i < Elements(ctx->mapped_vs_tex); i++) {
 339       pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
 340    }
 341 }
 342
 343 void
 344 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 345 {
 346    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 347
 348    llvmpipe->pipe.bind_fragment_sampler_states  = llvmpipe_bind_fragment_sampler_states;
 349    llvmpipe->pipe.bind_vertex_sampler_states  = llvmpipe_bind_vertex_sampler_states;
 350    llvmpipe->pipe.bind_geometry_sampler_states  = llvmpipe_bind_geometry_sampler_states;
 351    llvmpipe->pipe.set_fragment_sampler_views = llvmpipe_set_fragment_sampler_views;
 352    llvmpipe->pipe.set_vertex_sampler_views = llvmpipe_set_vertex_sampler_views;
 353    llvmpipe->pipe.set_geometry_sampler_views = llvmpipe_set_geometry_sampler_views;
 354    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
 355    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
 356    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 357 }