Method allocate

framework/core/descriptor_pool.cpp:95–126

}

VkDescriptorSet DescriptorPool::allocate()
{
	pool_index = find_available_pool(pool_index);

	// Increment allocated set count for the current pool
	++pool_sets_count[pool_index];

	VkDescriptorSetLayout set_layout = get_descriptor_set_layout().get_handle();

	VkDescriptorSetAllocateInfo alloc_info{VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO};
	alloc_info.descriptorPool     = pools[pool_index];
	alloc_info.descriptorSetCount = 1;
	alloc_info.pSetLayouts        = &set_layout;

	VkDescriptorSet handle = VK_NULL_HANDLE;

	// Allocate a new descriptor set from the current pool
	auto result = vkAllocateDescriptorSets(device.get_handle(), &alloc_info, &handle);

	if (result != VK_SUCCESS)
	{
		// Decrement allocated set count for the current pool
		--pool_sets_count[pool_index];

		return VK_NULL_HANDLE;
	}

	// Store mapping between the descriptor set and the pool
	set_pool_mapping.emplace(handle, pool_index);

	return handle;
}

VkResult DescriptorPool::free(VkDescriptorSet descriptor_set)
{