public void Copy(GraphicsResource source, GraphicsResource destination)
{
var sourceTexture = source as Texture;
var destinationTexture = destination as Texture;
if (sourceTexture != null && destinationTexture != null)
{
var sourceParent = sourceTexture.ParentTexture ?? sourceTexture;
var destinationParent = destinationTexture.ParentTexture ?? destinationTexture;
if (sourceParent.NativeResourceState != ResourceStates.CopySource)
{
NativeCommandList.ResourceBarrierTransition(sourceTexture.NativeResource, sourceParent.NativeResourceState, ResourceStates.CopySource);
}
if (destinationParent.NativeResourceState != ResourceStates.CopyDestination)
{
NativeCommandList.ResourceBarrierTransition(destinationTexture.NativeResource, destinationParent.NativeResourceState, ResourceStates.CopyDestination);
}
if (destinationTexture.Usage == GraphicsResourceUsage.Staging)
{
int copyOffset = 0;
for (int arraySlice = 0; arraySlice < sourceParent.ArraySize; ++arraySlice)
{
for (int mipLevel = 0; mipLevel < sourceParent.MipLevels; ++mipLevel)
{
NativeCommandList.CopyTextureRegion(new TextureCopyLocation(destinationTexture.NativeResource,
new PlacedSubResourceFootprint
{
Footprint =
{
Width = Texture.CalculateMipSize(destinationTexture.Width, mipLevel),
Height = Texture.CalculateMipSize(destinationTexture.Height, mipLevel),
Depth = Texture.CalculateMipSize(destinationTexture.Depth, mipLevel),
Format = (SharpDX.DXGI.Format)destinationTexture.Format,
RowPitch = destinationTexture.ComputeRowPitch(mipLevel),
},
Offset = copyOffset,
}), 0, 0, 0, new TextureCopyLocation(sourceTexture.NativeResource, arraySlice * sourceParent.MipLevels + mipLevel), null);
copyOffset += destinationTexture.ComputeSubresourceSize(mipLevel);
}
}
// Set a value that will
destinationParent.StagingFenceValue = GraphicsDevice.NextFenceValue;
}
else
{
NativeCommandList.CopyResource(destinationTexture.NativeResource, sourceTexture.NativeResource);
}
if (sourceParent.NativeResourceState != ResourceStates.CopySource)
{
NativeCommandList.ResourceBarrierTransition(sourceTexture.NativeResource, ResourceStates.CopySource, sourceParent.NativeResourceState);
}
if (destinationParent.NativeResourceState != ResourceStates.CopyDestination)
{
NativeCommandList.ResourceBarrierTransition(destinationTexture.NativeResource, ResourceStates.CopyDestination, destinationParent.NativeResourceState);
}
}
else
{
throw new NotImplementedException();
}
}