+ VkBufferMemoryRequirementsInfo2 req_desc = {
+ .sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_REQUIREMENTS_INFO_2,
+ };
+ VkMemoryDedicatedAllocateInfo ded_alloc = {
+ .sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_ALLOCATE_INFO,
+ .pNext = alloc_pnext,
+ };
+ VkMemoryDedicatedRequirements ded_req = {
+ .sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_REQUIREMENTS,
+ };
+ VkMemoryRequirements2 req = {
+ .sType = VK_STRUCTURE_TYPE_MEMORY_REQUIREMENTS_2,
+ .pNext = &ded_req,
+ };
+