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 struct pipe_surface *
  33 util_surfaces_do_get(struct util_surfaces *us, unsigned surface_struct_size, struct pipe_screen *pscreen, struct pipe_resource *pt, unsigned face, unsigned level, unsigned zslice, unsigned flags)
  34 {
  35    struct pipe_surface *ps;
  36
  37    if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
  38    {    /* or 2D array */
  39       if(!us->u.hash)
  40          us->u.hash = cso_hash_create();
  41
  42       ps = cso_hash_iter_data(cso_hash_find(us->u.hash, ((zslice + face) << 8) | level));
  43    }
  44    else
  45    {
  46       if(!us->u.array)
  47          us->u.array = CALLOC(pt->last_level + 1, sizeof(struct pipe_surface *));
  48       ps = us->u.array[level];
  49    }
  50
  51    if(ps)
  52    {
  53       p_atomic_inc(&ps->reference.count);
  54       return ps;
  55    }
  56
  57    ps = (struct pipe_surface *)CALLOC(1, surface_struct_size);
  58    if(!ps)
  59       return NULL;
  60
  61    pipe_surface_init(ps, pt, face, level, zslice, flags);
  62    ps->offset = ~0;
  63
  64    if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
  65       cso_hash_insert(us->u.hash, ((zslice + face) << 8) | level, ps);
  66    else
  67       us->u.array[level] = ps;
  68
  69    return ps;
  70 }
  71
  72 void
  73 util_surfaces_do_detach(struct util_surfaces *us, struct pipe_surface *ps)
  74 {
  75    struct pipe_resource *pt = ps->texture;
  76    if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
  77    {    /* or 2D array */
  78       cso_hash_erase(us->u.hash, cso_hash_find(us->u.hash, ((ps->zslice + ps->face) << 8) | ps->level));
  79    }
  80    else
  81       us->u.array[ps->level] = 0;
  82 }
  83
  84 void
  85 util_surfaces_destroy(struct util_surfaces *us, struct pipe_resource *pt, void (*destroy_surface) (struct pipe_surface *))
  86 {
  87    if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
  88    {    /* or 2D array */
  89       if(us->u.hash)
  90       {
  91          struct cso_hash_iter iter;
  92          iter = cso_hash_first_node(us->u.hash);
  93          while (!cso_hash_iter_is_null(iter)) {
  94             destroy_surface(cso_hash_iter_data(iter));
  95             iter = cso_hash_iter_next(iter);
  96          }
  97
  98          cso_hash_delete(us->u.hash);
  99          us->u.hash = NULL;
 100       }
 101    }
 102    else
 103    {
 104       if(us->u.array)
 105       {
 106          unsigned i;
 107          for(i = 0; i <= pt->last_level; ++i)
 108          {
 109             struct pipe_surface *ps = us->u.array[i];
 110             if(ps)
 111                destroy_surface(ps);
 112          }
 113          FREE(us->u.array);
 114          us->u.array = NULL;
 115       }
 116    }
 117 }