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
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  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
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  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 num, void **sampler)
  70 {
  71    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  72    unsigned i;
  73
  74    assert(num <= PIPE_MAX_SAMPLERS);
  75
  76    /* Check for no-op */
  77    if (num == llvmpipe->num_samplers &&
  78        !memcmp(llvmpipe->sampler, sampler, num * sizeof(void *)))
  79       return;
  80
  81    draw_flush(llvmpipe->draw);
  82
  83    for (i = 0; i < num; ++i)
  84       llvmpipe->sampler[i] = sampler[i];
  85    for (i = num; i < PIPE_MAX_SAMPLERS; ++i)
  86       llvmpipe->sampler[i] = NULL;
  87
  88    llvmpipe->num_samplers = num;
  89
  90    llvmpipe->dirty |= LP_NEW_SAMPLER;
  91 }
  92
  93
  94 static void
  95 llvmpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
  96                                     unsigned num_samplers,
  97                                     void **samplers)
  98 {
  99    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 100    unsigned i;
 101
 102    assert(num_samplers <= PIPE_MAX_VERTEX_SAMPLERS);
 103
 104    /* Check for no-op */
 105    if (num_samplers == llvmpipe->num_vertex_samplers &&
 106        !memcmp(llvmpipe->vertex_samplers, samplers, num_samplers * sizeof(void *)))
 107       return;
 108
 109    draw_flush(llvmpipe->draw);
 110
 111    for (i = 0; i < num_samplers; ++i)
 112       llvmpipe->vertex_samplers[i] = samplers[i];
 113    for (i = num_samplers; i < PIPE_MAX_VERTEX_SAMPLERS; ++i)
 114       llvmpipe->vertex_samplers[i] = NULL;
 115
 116    llvmpipe->num_vertex_samplers = num_samplers;
 117
 118    draw_set_samplers(llvmpipe->draw,
 119                      llvmpipe->vertex_samplers,
 120                      llvmpipe->num_vertex_samplers);
 121
 122    llvmpipe->dirty |= LP_NEW_SAMPLER;
 123 }
 124
 125
 126 static void
 127 llvmpipe_bind_geometry_sampler_states(struct pipe_context *pipe,
 128                                       unsigned num, void **sampler)
 129 {
 130    /* XXX: implementation missing */
 131 }
 132
 133 static void
 134 llvmpipe_set_fragment_sampler_views(struct pipe_context *pipe,
 135                                     unsigned num,
 136                                     struct pipe_sampler_view **views)
 137 {
 138    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 139    uint i;
 140
 141    assert(num <= PIPE_MAX_SAMPLERS);
 142
 143    /* Check for no-op */
 144    if (num == llvmpipe->num_fragment_sampler_views &&
 145        !memcmp(llvmpipe->fragment_sampler_views, views, num * sizeof(struct pipe_sampler_view *)))
 146       return;
 147
 148    draw_flush(llvmpipe->draw);
 149
 150    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 151       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 152
 153       pipe_sampler_view_reference(&llvmpipe->fragment_sampler_views[i], view);
 154    }
 155
 156    llvmpipe->num_fragment_sampler_views = num;
 157
 158    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 159 }
 160
 161
 162 static void
 163 llvmpipe_set_vertex_sampler_views(struct pipe_context *pipe,
 164                                   unsigned num,
 165                                   struct pipe_sampler_view **views)
 166 {
 167    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
 168    uint i;
 169
 170    assert(num <= PIPE_MAX_VERTEX_SAMPLERS);
 171
 172    /* Check for no-op */
 173    if (num == llvmpipe->num_vertex_sampler_views &&
 174        !memcmp(llvmpipe->vertex_sampler_views, views, num * sizeof(struct pipe_sampler_view *))) {
 175       return;
 176    }
 177
 178    draw_flush(llvmpipe->draw);
 179
 180    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 181       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 182
 183       pipe_sampler_view_reference(&llvmpipe->vertex_sampler_views[i], view);
 184    }
 185
 186    llvmpipe->num_vertex_sampler_views = num;
 187
 188    draw_set_sampler_views(llvmpipe->draw,
 189                           llvmpipe->vertex_sampler_views,
 190                           llvmpipe->num_vertex_sampler_views);
 191
 192    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 193 }
 194
 195
 196 static void
 197 llvmpipe_set_geometry_sampler_views(struct pipe_context *pipe,
 198                                     unsigned num,
 199                                     struct pipe_sampler_view **views)
 200 {
 201    /*XXX: implementation missing */
 202 }
 203
 204 static struct pipe_sampler_view *
 205 llvmpipe_create_sampler_view(struct pipe_context *pipe,
 206                             struct pipe_resource *texture,
 207                             const struct pipe_sampler_view *templ)
 208 {
 209    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
 210
 211    if (view) {
 212       *view = *templ;
 213       view->reference.count = 1;
 214       view->texture = NULL;
 215       pipe_resource_reference(&view->texture, texture);
 216       view->context = pipe;
 217    }
 218
 219    return view;
 220 }
 221
 222
 223 static void
 224 llvmpipe_sampler_view_destroy(struct pipe_context *pipe,
 225                               struct pipe_sampler_view *view)
 226 {
 227    pipe_resource_reference(&view->texture, NULL);
 228    FREE(view);
 229 }
 230
 231
 232 static void
 233 llvmpipe_delete_sampler_state(struct pipe_context *pipe,
 234                               void *sampler)
 235 {
 236    FREE( sampler );
 237 }
 238
 239
 240 /**
 241  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
 242  */
 243 void
 244 llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
 245                                  unsigned num,
 246                                  struct pipe_sampler_view **views)
 247 {
 248    unsigned i;
 249    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
 250    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
 251    const void *data[PIPE_MAX_TEXTURE_LEVELS];
 252
 253    assert(num <= PIPE_MAX_VERTEX_SAMPLERS);
 254    if (!num)
 255       return;
 256
 257    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 258       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
 259
 260       if (view) {
 261          struct pipe_resource *tex = view->texture;
 262          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
 263
 264          /* We're referencing the texture's internal data, so save a
 265           * reference to it.
 266           */
 267          pipe_resource_reference(&lp->mapped_vs_tex[i], tex);
 268
 269          if (!lp_tex->dt) {
 270             /* regular texture - setup array of mipmap level pointers */
 271             int j;
 272             for (j = view->u.tex.first_level; j <= tex->last_level; j++) {
 273                data[j] =
 274                   llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
 275                                                  LP_TEX_LAYOUT_LINEAR);
 276                row_stride[j] = lp_tex->row_stride[j];
 277                img_stride[j] = lp_tex->img_stride[j];
 278             }
 279          }
 280          else {
 281             /* display target texture/surface */
 282             /*
 283              * XXX: Where should this be unmapped?
 284              */
 285             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
 286             struct sw_winsys *winsys = screen->winsys;
 287             data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
 288                                                 PIPE_TRANSFER_READ);
 289             row_stride[0] = lp_tex->row_stride[0];
 290             img_stride[0] = lp_tex->img_stride[0];
 291             assert(data[0]);
 292          }
 293          draw_set_mapped_texture(lp->draw,
 294                                  i,
 295                                  tex->width0, tex->height0, tex->depth0,
 296                                  view->u.tex.first_level, tex->last_level,
 297                                  row_stride, img_stride, data);
 298       }
 299    }
 300 }
 301
 302 void
 303 llvmpipe_cleanup_vertex_sampling(struct llvmpipe_context *ctx)
 304 {
 305    unsigned i;
 306    for (i = 0; i < Elements(ctx->mapped_vs_tex); i++) {
 307       pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
 308    }
 309 }
 310
 311 void
 312 llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
 313 {
 314    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 315
 316    llvmpipe->pipe.bind_fragment_sampler_states  = llvmpipe_bind_sampler_states;
 317    llvmpipe->pipe.bind_vertex_sampler_states  = llvmpipe_bind_vertex_sampler_states;
 318    llvmpipe->pipe.bind_geometry_sampler_states  = llvmpipe_bind_geometry_sampler_states;
 319    llvmpipe->pipe.set_fragment_sampler_views = llvmpipe_set_fragment_sampler_views;
 320    llvmpipe->pipe.set_vertex_sampler_views = llvmpipe_set_vertex_sampler_views;
 321    llvmpipe->pipe.set_geometry_sampler_views = llvmpipe_set_geometry_sampler_views;
 322    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
 323    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
 324    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 325 }