/// <inheritdoc cref="Copy(GraphicsTexture, GraphicsBuffer)" />
public void Copy(D3D12GraphicsTexture destination, D3D12GraphicsBuffer source)
{
ThrowIfNull(destination, nameof(destination));
ThrowIfNull(source, nameof(source));
var device = Device.D3D12Device;
var commandList = D3D12GraphicsCommandList;
var destinationCpuAccess = destination.CpuAccess;
var sourceCpuAccess = source.CpuAccess;
var d3d12DestinationResource = destination.D3D12Resource;
var d3d12SourceResource = source.D3D12Resource;
var d3d12DestinationResourceState = destination.D3D12ResourceState;
var d3d12SourceResourceState = source.D3D12ResourceState;
BeginCopy();
D3D12_PLACED_SUBRESOURCE_FOOTPRINT sourceFootprint;
var destinationDesc = d3d12DestinationResource->GetDesc();
device->GetCopyableFootprints(&destinationDesc, FirstSubresource: 0, NumSubresources: 1, BaseOffset: 0, &sourceFootprint, pNumRows: null, pRowSizeInBytes: null, pTotalBytes: null);
var d3d12DestinationTextureCopyLocation = new D3D12_TEXTURE_COPY_LOCATION(d3d12DestinationResource, Sub: 0);
var d3d12SourceTextureCopyLocation = new D3D12_TEXTURE_COPY_LOCATION(d3d12SourceResource, in sourceFootprint);
commandList->CopyTextureRegion(&d3d12DestinationTextureCopyLocation, DstX: 0, DstY: 0, DstZ: 0, &d3d12SourceTextureCopyLocation, pSrcBox: null);
EndCopy();
void BeginCopy()
{
var resourceBarriers = stackalloc D3D12_RESOURCE_BARRIER[2];
var numResourceBarriers = 0u;
if (destinationCpuAccess == GraphicsResourceCpuAccess.None)
{
resourceBarriers[numResourceBarriers] = D3D12_RESOURCE_BARRIER.InitTransition(
d3d12DestinationResource,
stateBefore: d3d12DestinationResourceState,
stateAfter: D3D12_RESOURCE_STATE_COPY_DEST
);
numResourceBarriers++;
}
if (sourceCpuAccess == GraphicsResourceCpuAccess.None)
{
resourceBarriers[numResourceBarriers] = D3D12_RESOURCE_BARRIER.InitTransition(
d3d12SourceResource,
stateBefore: d3d12SourceResourceState,
stateAfter: D3D12_RESOURCE_STATE_COPY_SOURCE
);
numResourceBarriers++;
}
if (numResourceBarriers != 0)
{
commandList->ResourceBarrier(numResourceBarriers, resourceBarriers);
}
}
void EndCopy()
{
var resourceBarriers = stackalloc D3D12_RESOURCE_BARRIER[2];
var numResourceBarriers = 0u;
if (sourceCpuAccess == GraphicsResourceCpuAccess.None)
{
resourceBarriers[numResourceBarriers] = D3D12_RESOURCE_BARRIER.InitTransition(
d3d12SourceResource,
stateBefore: D3D12_RESOURCE_STATE_COPY_SOURCE,
stateAfter: d3d12SourceResourceState
);
numResourceBarriers++;
}
if (destinationCpuAccess == GraphicsResourceCpuAccess.None)
{
resourceBarriers[numResourceBarriers] = D3D12_RESOURCE_BARRIER.InitTransition(
d3d12DestinationResource,
stateBefore: D3D12_RESOURCE_STATE_COPY_DEST,
stateAfter: d3d12DestinationResourceState
);
numResourceBarriers++;
}
if (numResourceBarriers != 0)
{
commandList->ResourceBarrier(numResourceBarriers, resourceBarriers);
}
}
}
/// <inheritdoc cref="Copy(GraphicsBuffer, GraphicsBuffer)" />
public void Copy(D3D12GraphicsBuffer destination, D3D12GraphicsBuffer source)
{
ThrowIfNull(destination, nameof(destination));
ThrowIfNull(source, nameof(source));
var commandList = D3D12GraphicsCommandList;
var destinationCpuAccess = destination.CpuAccess;
var sourceCpuAccess = source.CpuAccess;
var d3d12DestinationResource = destination.D3D12Resource;
var d3d12SourceResource = source.D3D12Resource;
var d3d12DestinationResourceState = destination.D3D12ResourceState;
var d3d12SourceResourceState = source.D3D12ResourceState;
BeginCopy();
commandList->CopyResource(d3d12DestinationResource, d3d12SourceResource);
EndCopy();
void BeginCopy()
{
var resourceBarriers = stackalloc D3D12_RESOURCE_BARRIER[2];
var numResourceBarriers = 0u;
if (destinationCpuAccess == GraphicsResourceCpuAccess.None)
{
resourceBarriers[numResourceBarriers] = D3D12_RESOURCE_BARRIER.InitTransition(
d3d12DestinationResource,
stateBefore: d3d12DestinationResourceState,
stateAfter: D3D12_RESOURCE_STATE_COPY_DEST
);
numResourceBarriers++;
}
if (sourceCpuAccess == GraphicsResourceCpuAccess.None)
{
resourceBarriers[numResourceBarriers] = D3D12_RESOURCE_BARRIER.InitTransition(
d3d12SourceResource,
stateBefore: d3d12SourceResourceState,
stateAfter: D3D12_RESOURCE_STATE_COPY_SOURCE
);
numResourceBarriers++;
}
if (numResourceBarriers != 0)
{
commandList->ResourceBarrier(numResourceBarriers, resourceBarriers);
}
}
void EndCopy()
{
var resourceBarriers = stackalloc D3D12_RESOURCE_BARRIER[2];
var numResourceBarriers = 0u;
if (sourceCpuAccess == GraphicsResourceCpuAccess.None)
{
resourceBarriers[numResourceBarriers] = D3D12_RESOURCE_BARRIER.InitTransition(
d3d12SourceResource,
stateBefore: D3D12_RESOURCE_STATE_COPY_SOURCE,
stateAfter: d3d12SourceResourceState
);
numResourceBarriers++;
}
if (destinationCpuAccess == GraphicsResourceCpuAccess.None)
{
resourceBarriers[numResourceBarriers] = D3D12_RESOURCE_BARRIER.InitTransition(
d3d12DestinationResource,
stateBefore: D3D12_RESOURCE_STATE_COPY_DEST,
stateAfter: d3d12DestinationResourceState
);
numResourceBarriers++;
}
if (numResourceBarriers != 0)
{
commandList->ResourceBarrier(numResourceBarriers, resourceBarriers);
}
}
}