// d3d12umddi.h

typedef enum D3D12DDI_RESOURCE_BARRIER_FLAGS {
  D3D12DDI_RESOURCE_BARRIER_FLAG_NONE = 0x0,
  D3D12DDI_RESOURCE_BARRIER_FLAG_BEGIN_ONLY = 0x1,
  D3D12DDI_RESOURCE_BARRIER_FLAG_END_ONLY = 0x2,
  D3D12DDI_RESOURCE_BARRIER_FLAG_0022_ATOMIC_COPY = 0x4,
  D3D12DDI_RESOURCE_BARRIER_FLAG_0022_ALIASING = 0x8
} ;
View the official Windows Driver Kit DDI reference

NtDoc

No description available.

Edit description on GitHub

Windows Driver Kit DDI reference (ne-d3d12umddi-d3d12ddi_resource_barrier_flags)

D3D12DDI_RESOURCE_BARRIER_FLAGS enumeration

Description

D3D12DDI_RESOURCE_BARRIER_FLAGS contains legacy resource barrier flags.

Constants

`D3D12DDI_RESOURCE_BARRIER_FLAG_NONE:0x0`

No flag value.

`D3D12DDI_RESOURCE_BARRIER_FLAG_BEGIN_ONLY:0x1`

Indicates an acquire. This starts a barrier transition in a new state, putting a resource in a temporary no-access condition. This flag is relevant only for ranged barriers.

`D3D12DDI_RESOURCE_BARRIER_FLAG_END_ONLY:0x2`

Indicates a release. This barrier completes a transition, setting a new state and restoring active access to a resource. This flag is relevant only for ranged barriers.

`D3D12DDI_RESOURCE_BARRIER_FLAG_0022_ATOMIC_COPY:0x4`

Indicates that ranged barriers are associated with a parameter of an atomic copy operation.

`D3D12DDI_RESOURCE_BARRIER_FLAG_0022_ALIASING:0x8`

Indicates that an aliasing barrier has been converted to a ranged barrier.

Remarks

The absence of both D3D12DDI_RESOURCE_BARRIER_FLAG_BEGIN_ONLY and D3D12DDI_RESOURCE_BARRIER_FLAG_END_ONLY denotes both an acquire and release.

During an acquire, GPU caches may need to be explicitly invalidated. During a release, GPU caches may need to be explicitly flushed.

D3D12DDI_RESOURCE_BARRIER_FLAGS - NtDoc