summaryrefslogtreecommitdiff
path: root/src/gallium/auxiliary/util/u_surfaces.c
blob: 7733ad24d0d68bbde6d8350b503bfb4d81186986 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
#include "u_surfaces.h"
#include "util/u_hash_table.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"

struct pipe_surface *
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)
{
   struct pipe_surface *ps;

   if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
   {    /* or 2D array */
      if(!us->u.hash)
         us->u.hash = cso_hash_create();

      ps = cso_hash_iter_data(cso_hash_find(us->u.hash, ((zslice + face) << 8) | level));
   }
   else
   {
      if(!us->u.array)
         us->u.array = CALLOC(pt->last_level + 1, sizeof(struct pipe_surface *));
      ps = us->u.array[level];
   }

   if(ps)
   {
      p_atomic_inc(&ps->reference.count);
      return ps;
   }

   ps = (struct pipe_surface *)CALLOC(1, surface_struct_size);
   if(!ps)
      return NULL;

   pipe_surface_init(ps, pt, face, level, zslice, flags);
   ps->offset = ~0;

   if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
      cso_hash_insert(us->u.hash, ((zslice + face) << 8) | level, ps);
   else
      us->u.array[level] = ps;

   return ps;
}

void
util_surfaces_do_detach(struct util_surfaces *us, struct pipe_surface *ps)
{
   struct pipe_resource *pt = ps->texture;
   if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
   {    /* or 2D array */
      cso_hash_erase(us->u.hash, cso_hash_find(us->u.hash, ((ps->zslice + ps->face) << 8) | ps->level));
   }
   else
      us->u.array[ps->level] = 0;
}

void
util_surfaces_destroy(struct util_surfaces *us, struct pipe_resource *pt, void (*destroy_surface) (struct pipe_surface *))
{
   if(pt->target == PIPE_TEXTURE_3D || pt->target == PIPE_TEXTURE_CUBE)
   {    /* or 2D array */
      if(us->u.hash)
      {
         struct cso_hash_iter iter;
         iter = cso_hash_first_node(us->u.hash);
         while (!cso_hash_iter_is_null(iter)) {
            destroy_surface(cso_hash_iter_data(iter));
            iter = cso_hash_iter_next(iter);
         }

         cso_hash_delete(us->u.hash);
         us->u.hash = NULL;
      }
   }
   else
   {
      if(us->u.array)
      {
         unsigned i;
         for(i = 0; i <= pt->last_level; ++i)
         {
            struct pipe_surface *ps = us->u.array[i];
            if(ps)
               destroy_surface(ps);
         }
         FREE(us->u.array);
         us->u.array = NULL;
      }
   }
}