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,unsigned flags,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, 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
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