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util: add new util_resource_size() function in u_resource.[ch] 

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Brian Paul 2013-04-03 10:23:16 -06:00
parent a3cccdec90
commit a69efa9482
2 changed files with 98 additions and 1 deletions
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65
src/gallium/auxiliary/util/u_resource.c
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@ -1,2 +1,65 @@
/*
* Copyright 2013 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/* temporarily empty */
#include "pipe/p_defines.h"
#include "pipe/p_state.h"
#include "util/u_format.h"
#include "util/u_math.h"
#include "util/u_resource.h"
/**
* Return the size of the resource in bytes.
*/
unsigned
util_resource_size(const struct pipe_resource *res)
{
unsigned width = res->width0;
unsigned height = res->height0;
unsigned depth = res->depth0;
unsigned size = 0;
unsigned level;
for (level = 0; level <= res->last_level; level++) {
unsigned slices;
if (res->target == PIPE_TEXTURE_CUBE)
slices = 6;
else if (res->target == PIPE_TEXTURE_3D)
slices = depth;
else
slices = res->array_size;
size += (util_format_get_nblocksy(res->format, height) *
util_format_get_stride(res->format, width) * slices);
width = u_minify(width, 1);
height = u_minify(height, 1);
depth = u_minify(depth, 1);
}
return size;
}

34
src/gallium/auxiliary/util/u_resource.h Normal file
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@ -0,0 +1,34 @@
/*
* Copyright 2013 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef U_RESOURCE_H
#define U_RESOURCE_H
struct pipe_resource;
unsigned
util_resource_size(const struct pipe_resource *res);
#endif