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Specifies the memory pool for the heap.
Syntax
typedef enum D3D12_MEMORY_POOL {
D3D12_MEMORY_POOL_UNKNOWN = 0,
D3D12_MEMORY_POOL_L0 = 1,
D3D12_MEMORY_POOL_L1 = 2
} ;
Constants
D3D12_MEMORY_POOL_UNKNOWNValue: 0 The memory pool is unknown. |
D3D12_MEMORY_POOL_L0Value: 1 The memory pool is L0. L0 is the physical system memory pool. When the adapter is discrete/NUMA, this pool has greater bandwidth for the CPU and less bandwidth for the GPU. When the adapter is UMA, this pool is the only one which is valid. |
D3D12_MEMORY_POOL_L1Value: 2 The memory pool is L1. L1 is typically known as the physical video memory pool. L1 is only available when the adapter is discrete/NUMA, and has greater bandwidth for the GPU and cannot even be accessed by the CPU. When the adapter is UMA, this pool is not available. |
Remarks
This enum is used by the D3D12_HEAP_PROPERTIES structure.
When the adapter is UMA, D3D12_MEMORY_POOL_L0 and DXGI_MEMORY_SEGMENT_GROUP_LOCAL refer to the same memory.
When
the adapter is not UMA: D3D12_MEMORY_POOL_L0 and DXGI_MEMORY_SEGMENT_GROUP_NON_LOCAL refer to the same memory. D3D12_MEMORY_POOL_L1 and DXGI_MEMORY_SEGMENT_GROUP_LOCAL refer to the same memory.
Requirements
| Requirement | Value |
|---|---|
| Header | d3d12.h |