mesa/src/vulkan/runtime/vk_descriptors.c

57 lines
2.1 KiB
C

/*
* Copyright © 2016 Red Hat.
* Copyright © 2016 Bas Nieuwenhuizen
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include <stdlib.h>
#include <string.h>
#include "vk_descriptors.h"
#include "util/macros.h"
static int
binding_compare(const void* av, const void *bv)
{
const VkDescriptorSetLayoutBinding *a = (const VkDescriptorSetLayoutBinding*)av;
const VkDescriptorSetLayoutBinding *b = (const VkDescriptorSetLayoutBinding*)bv;
return (a->binding < b->binding) ? -1 : (a->binding > b->binding) ? 1 : 0;
}
VkResult
vk_create_sorted_bindings(const VkDescriptorSetLayoutBinding *bindings, unsigned count,
VkDescriptorSetLayoutBinding **sorted_bindings)
{
if (!count) {
*sorted_bindings = NULL;
return VK_SUCCESS;
}
*sorted_bindings = malloc(count * sizeof(VkDescriptorSetLayoutBinding));
if (!*sorted_bindings)
return VK_ERROR_OUT_OF_HOST_MEMORY;
memcpy(*sorted_bindings, bindings, count * sizeof(VkDescriptorSetLayoutBinding));
qsort(*sorted_bindings, count, sizeof(VkDescriptorSetLayoutBinding), binding_compare);
return VK_SUCCESS;
}