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 "state_tracker/sw_winsys.h"
  41
  42
  43 static void *
  44 llvmpipe_create_sampler_state(struct pipe_context *pipe,
  45                               const struct pipe_sampler_state *sampler)
  46 {
  47    return mem_dup(sampler, sizeof(*sampler));
  48 }
  49
  50
  51 static void
  52 llvmpipe_bind_sampler_states(struct pipe_context *pipe,
  53                              unsigned num, void **sampler)
  54 {
  55    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  56    unsigned i;
  57
  58    assert(num <= PIPE_MAX_SAMPLERS);
  59
  60    /* Check for no-op */
  61    if (num == llvmpipe->num_samplers &&
  62        !memcmp(llvmpipe->sampler, sampler, num * sizeof(void *)))
  63       return;
  64
  65    draw_flush(llvmpipe->draw);
  66
  67    for (i = 0; i < num; ++i)
  68       llvmpipe->sampler[i] = sampler[i];
  69    for (i = num; i < PIPE_MAX_SAMPLERS; ++i)
  70       llvmpipe->sampler[i] = NULL;
  71
  72    llvmpipe->num_samplers = num;
  73
  74    llvmpipe->dirty |= LP_NEW_SAMPLER;
  75 }
  76
  77
  78 static void
  79 llvmpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
  80                                     unsigned num_samplers,
  81                                     void **samplers)
  82 {
  83    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  84    unsigned i;
  85
  86    assert(num_samplers <= PIPE_MAX_VERTEX_SAMPLERS);
  87
  88    /* Check for no-op */
  89    if (num_samplers == llvmpipe->num_vertex_samplers &&
  90        !memcmp(llvmpipe->vertex_samplers, samplers, num_samplers * sizeof(void *)))
  91       return;
  92
  93    draw_flush(llvmpipe->draw);
  94
  95    for (i = 0; i < num_samplers; ++i)
  96       llvmpipe->vertex_samplers[i] = samplers[i];
  97    for (i = num_samplers; i < PIPE_MAX_VERTEX_SAMPLERS; ++i)
  98       llvmpipe->vertex_samplers[i] = NULL;
  99
 100    llvmpipe->num_vertex_samplers = num_samplers;
 101
 102    draw_set_samplers(llvmpipe->draw,
 103                      llvmpipe->vertex_samplers,
 104                      llvmpipe->num_vertex_samplers);
 105
 106    llvmpipe->dirty |= LP_NEW_SAMPLER;
 107 }
 108
 109
 110 static void
 111 llvmpipe_bind_geometry_sampler_states(struct pipe_context *pipe,
 112                                       unsigned num, void **sampler)
 113 {
 114    /* XXX: implementation missing */
 115 }
 116
 117 static void
 118 llvmpipe_set_fragment_sampler_views(struct pipe_context *pipe,
 119                                     unsigned num,
 120                                     struct pipe_sampler_view **views)
 121 {
 122    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 123    uint i;
 124
 125    assert(num <= PIPE_MAX_SAMPLERS);
 126
 127    /* Check for no-op */
 128    if (num == llvmpipe->num_fragment_sampler_views &&
 129        !memcmp(llvmpipe->fragment_sampler_views, views, num * sizeof(struct pipe_sampler_view *)))
 130       return;
 131
 132    draw_flush(llvmpipe->draw);
 133
 134    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 135       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 136
 137       pipe_sampler_view_reference(&llvmpipe->fragment_sampler_views[i], view);
 138    }
 139
 140    llvmpipe->num_fragment_sampler_views = num;
 141
 142    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 143 }
 144
 145
 146 static void
 147 llvmpipe_set_vertex_sampler_views(struct pipe_context *pipe,
 148                                   unsigned num,
 149                                   struct pipe_sampler_view **views)
 150 {
 151    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 152    uint i;
 153
 154    assert(num <= PIPE_MAX_VERTEX_SAMPLERS);
 155
 156    /* Check for no-op */
 157    if (num == llvmpipe->num_vertex_sampler_views &&
 158        !memcmp(llvmpipe->vertex_sampler_views, views, num * sizeof(struct pipe_sampler_view *))) {
 159       return;
 160    }
 161
 162    draw_flush(llvmpipe->draw);
 163
 164    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 165       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 166
 167       pipe_sampler_view_reference(&llvmpipe->vertex_sampler_views[i], view);
 168    }
 169
 170    llvmpipe->num_vertex_sampler_views = num;
 171
 172    draw_set_sampler_views(llvmpipe->draw,
 173                           llvmpipe->vertex_sampler_views,
 174                           llvmpipe->num_vertex_sampler_views);
 175
 176    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 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    /*XXX: implementation missing */
 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    if (view) {
 196       *view = *templ;
 197       view->reference.count = 1;
 198       view->texture = NULL;
 199       pipe_resource_reference(&view->texture, texture);
 200       view->context = pipe;
 201    }
 202
 203    return view;
 204 }
 205
 206
 207 static void
 208 llvmpipe_sampler_view_destroy(struct pipe_context *pipe,
 209                               struct pipe_sampler_view *view)
 210 {
 211    pipe_resource_reference(&view->texture, NULL);
 212    FREE(view);
 213 }
 214
 215
 216 static void
 217 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 218                               void *sampler)
 219 {
 220    FREE( sampler );
 221 }
 222
 223
 224 /**
 225  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 226  */
 227 void
 228 llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
 229                                  unsigned num,
 230                                  struct pipe_sampler_view **views)
 231 {
 232    unsigned i;
 233    uint32_t row_stride[DRAW_MAX_TEXTURE_LEVELS];
 234    uint32_t img_stride[DRAW_MAX_TEXTURE_LEVELS];
 235    const void *data[DRAW_MAX_TEXTURE_LEVELS];
 236
 237    assert(num <= PIPE_MAX_VERTEX_SAMPLERS);
 238    if (!num)
 239       return;
 240
 241    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 242       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 243
 244       if (view) {
 245          struct pipe_resource *tex = view->texture;
 246          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 247
 248          /* We're referencing the texture's internal data, so save a
 249           * reference to it.
 250           */
 251          pipe_resource_reference(&lp->mapped_vs_tex[i], tex);
 252
 253          if (!lp_tex->dt) {
 254             /* regular texture - setup array of mipmap level pointers */
 255             int j;
 256             for (j = 0; j <= tex->last_level; j++) {
 257                data[j] =
 258                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 259                                                  LP_TEX_LAYOUT_LINEAR);
 260                row_stride[j] = lp_tex->row_stride[j];
 261                img_stride[j] = lp_tex->img_stride[j];
 262             }
 263          }
 264          else {
 265             /* display target texture/surface */
 266             /*
 267              * XXX: Where should this be unmapped?
 268              */
 269             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 270             struct sw_winsys *winsys = screen->winsys;
 271             data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 272                                                 PIPE_TRANSFER_READ);
 273             row_stride[0] = lp_tex->row_stride[0];
 274             img_stride[0] = lp_tex->img_stride[0];
 275             assert(data[0]);
 276          }
 277          draw_set_mapped_texture(lp->draw,
 278                                  i,
 279                                  tex->width0, tex->height0, tex->depth0,
 280                                  tex->last_level,
 281                                  row_stride, img_stride, data);
 282       }
 283    }
 284 }
 285
 286 void
 287 llvmpipe_cleanup_vertex_sampling(struct llvmpipe_context *ctx)
 288 {
 289    unsigned i;
 290    for (i = 0; i < Elements(ctx->mapped_vs_tex); i++) {
 291       pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
 292    }
 293 }
 294
 295 void
 296 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 297 {
 298    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 299
 300    llvmpipe->pipe.bind_fragment_sampler_states  = llvmpipe_bind_sampler_states;
 301    llvmpipe->pipe.bind_vertex_sampler_states  = llvmpipe_bind_vertex_sampler_states;
 302    llvmpipe->pipe.bind_geometry_sampler_states  = llvmpipe_bind_geometry_sampler_states;
 303    llvmpipe->pipe.set_fragment_sampler_views = llvmpipe_set_fragment_sampler_views;
 304    llvmpipe->pipe.set_vertex_sampler_views = llvmpipe_set_vertex_sampler_views;
 305    llvmpipe->pipe.set_geometry_sampler_views = llvmpipe_set_geometry_sampler_views;
 306    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
 307    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
 308    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 309 }