/// <summary>
/// Mark a resource barrier on the command list
/// </summary>
/// <param name="resource">The resource to transition</param>
/// <param name="transition">The transition</param>
public void ResourceTransition(GpuResource resource, ResourceTransition transition)
{
// don't do unnecessary work
if (resource.State == transition.NewState)
{
return;
}
var barrier = new D3D12_RESOURCE_BARRIER
{
Type = D3D12_RESOURCE_BARRIER_TYPE.D3D12_RESOURCE_BARRIER_TYPE_TRANSITION,
Flags = D3D12_RESOURCE_BARRIER_FLAGS.D3D12_RESOURCE_BARRIER_FLAG_NONE,
Anonymous = new D3D12_RESOURCE_BARRIER._Anonymous_e__Union
{
Transition = CreateD3D12Transition(resource, transition)
}
};
resource.State = transition.NewState;
_list.Get()->ResourceBarrier(1, &barrier);
}
private D3D12_RESOURCE_TRANSITION_BARRIER CreateD3D12Transition(GpuResource resource, ResourceTransition transition)
{
return(new D3D12_RESOURCE_TRANSITION_BARRIER
{
pResource = resource.UnderlyingResource,
StateBefore = resource.State,
StateAfter = transition.NewState,
Subresource = transition.Subresource
});
}
