u_surfaces.c revision e3256ccb045032960f099318938991392b896b44 
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
32boolean
33util_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
79void
80util_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
91void
92util_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}
125