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      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
     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 
     46    for (level = 0; level <= res->last_level; level++) {
     47       unsigned slices;
     48 
     49       if (res->target == PIPE_TEXTURE_CUBE)
     50          slices = 6;
     51       else if (res->target == PIPE_TEXTURE_3D)
     52          slices = depth;
     53       else
     54          slices = res->array_size;
     55 
     56       size += (util_format_get_nblocksy(res->format, height) *
     57                util_format_get_stride(res->format, width) * slices);
     58 
     59       width  = u_minify(width, 1);
     60       height = u_minify(height, 1);
     61       depth = u_minify(depth, 1);
     62    }
     63 
     64    return size;
     65 }
     66