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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
util_surfaces_do_get(struct util_surfaces * us,unsigned surface_struct_size,struct pipe_context * ctx,struct pipe_resource * pt,unsigned level,unsigned layer,struct pipe_surface ** res)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,
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);
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
util_surfaces_do_detach(struct util_surfaces * us,struct pipe_surface * ps)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
util_surfaces_destroy(struct util_surfaces * us,struct pipe_resource * pt,void (* destroy_surface)(struct pipe_surface *))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 }
125