1 /*
2 * Copyright 2013 VMware, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * 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, sub license, 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 portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 #include "pipe/p_defines.h"
28 #include "pipe/p_state.h"
29 #include "util/u_format.h"
30 #include "util/u_math.h"
31 #include "util/u_resource.h"
32
33
34 /**
35 * Return the size of the resource in bytes.
36 */
37 unsigned
util_resource_size(const struct pipe_resource * res)38 util_resource_size(const struct pipe_resource *res)
39 {
40 unsigned width = res->width0;
41 unsigned height = res->height0;
42 unsigned depth = res->depth0;
43 unsigned size = 0;
44 unsigned level;
45 unsigned samples = MAX2(1, res->nr_samples);
46
47 for (level = 0; level <= res->last_level; level++) {
48 unsigned slices;
49
50 if (res->target == PIPE_TEXTURE_CUBE)
51 slices = 6;
52 else if (res->target == PIPE_TEXTURE_3D)
53 slices = depth;
54 else
55 slices = res->array_size;
56
57 size += (util_format_get_nblocksy(res->format, height) *
58 util_format_get_stride(res->format, width) * slices * samples);
59
60 width = u_minify(width, 1);
61 height = u_minify(height, 1);
62 depth = u_minify(depth, 1);
63 }
64
65 return size;
66 }
67