## C Specification

If the pNext chain includes a VkMemoryPriorityAllocateInfoEXT structure, then that structure includes a priority for the memory.

The VkMemoryPriorityAllocateInfoEXT structure is defined as:

// Provided by VK_EXT_memory_priority
typedef struct VkMemoryPriorityAllocateInfoEXT {
VkStructureType    sType;
const void*        pNext;
float              priority;
} VkMemoryPriorityAllocateInfoEXT;

## Members

• sType is the type of this structure.

• pNext is NULL or a pointer to a structure extending this structure.

• priority is a floating-point value between 0 and 1, indicating the priority of the allocation relative to other memory allocations. Larger values are higher priority. The granularity of the priorities is implementation-dependent.

## Description

Memory allocations with higher priority may be more likely to stay in device-local memory when the system is under memory pressure.

If this structure is not included, it is as if the priority value were 0.5.

Valid Usage
• VUID-VkMemoryPriorityAllocateInfoEXT-priority-02602
priority must be between 0 and 1, inclusive

Valid Usage (Implicit)
• VUID-VkMemoryPriorityAllocateInfoEXT-sType-sType
sType must be VK_STRUCTURE_TYPE_MEMORY_PRIORITY_ALLOCATE_INFO_EXT