workbench/libs/mesa/src/gallium/auxiliary/util/u_surfaces.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 Luca Barbieri
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27 #include "u_surfaces.h"
  28 #include "util/u_hash_table.h"
  29 #include "util/u_inlines.h"
  30 #include "util/u_memory.h"
  31
  32 boolean
  33 util_surfaces_do_get(struct util_surfaces *us, unsigned surface_struct_size,
  34                      struct pipe_context *ctx, struct pipe_resource *pt,
  35                      unsigned level, unsigned layer, unsigned flags,
  36                      struct pipe_surface **res)
  37 {
  38    struct pipe_surface *ps;
  39
  40    if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
  41    {    /* or 2D array */
  42       if(!us->u.hash)
  43          us->u.hash = cso_hash_create();
  44
  45       ps = cso_hash_iter_data(cso_hash_find(us->u.hash, (layer << 8) | level));
  46    }
  47    else
  48    {
  49       if(!us->u.array)
  50          us->u.array = CALLOC(pt->last_level + 1, sizeof(struct pipe_surface *));
  51       ps = us->u.array[level];
  52    }
  53
  54    if(ps && ps->context == ctx)
  55    {
  56       p_atomic_inc(&ps->reference.count);
  57       *res = ps;
  58       return FALSE;
  59    }
  60
  61    ps = (struct pipe_surface *)CALLOC(1, surface_struct_size);
  62    if(!ps)
  63    {
  64       *res = NULL;
  65       return FALSE;
  66    }
  67
  68    pipe_surface_init(ctx, ps, pt, level, layer, flags);
  69
  70    if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
  71       cso_hash_insert(us->u.hash, (layer << 8) | level, ps);
  72    else
  73       us->u.array[level] = ps;
  74
  75    *res = ps;
  76    return TRUE;
  77 }
  78
  79 void
  80 util_surfaces_do_detach(struct util_surfaces *us, struct pipe_surface *ps)
  81 {
  82    struct pipe_resource *pt = ps->texture;
  83    if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
  84    {    /* or 2D array */
  85       cso_hash_erase(us->u.hash, cso_hash_find(us->u.hash, (ps->u.tex.first_layer << 8) | ps->u.tex.level));
  86    }
  87    else
  88       us->u.array[ps->u.tex.level] = 0;
  89 }
  90
  91 void
  92 util_surfaces_destroy(struct util_surfaces *us, struct pipe_resource *pt, void (*destroy_surface) (struct pipe_surface *))
  93 {
  94    if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
  95    {    /* or 2D array */
  96       if(us->u.hash)
  97       {
  98          struct cso_hash_iter iter;
  99          iter = cso_hash_first_node(us->u.hash);
 100          while (!cso_hash_iter_is_null(iter)) {
 101             destroy_surface(cso_hash_iter_data(iter));
 102             iter = cso_hash_iter_next(iter);
 103          }
 104
 105          cso_hash_delete(us->u.hash);
 106          us->u.hash = NULL;
 107       }
 108    }
 109    else
 110    {
 111       if(us->u.array)
 112       {
 113          unsigned i;
 114          for(i = 0; i <= pt->last_level; ++i)
 115          {
 116             struct pipe_surface *ps = us->u.array[i];
 117             if(ps)
 118                destroy_surface(ps);
 119          }
 120          FREE(us->u.array);
 121          us->u.array = NULL;
 122       }
 123    }
 124 }