public static void MemcpySubresource([NativeTypeName("const D3D12_MEMCPY_DEST *")] D3D12_MEMCPY_DEST *pDest, [NativeTypeName("const void *")] void *pResourceData, [NativeTypeName("const D3D12_SUBRESOURCE_INFO *")] D3D12_SUBRESOURCE_INFO *pSrc, [NativeTypeName("SIZE_T")] nuint RowSizeInBytes, [NativeTypeName("UINT")] uint NumRows, [NativeTypeName("UINT")] uint NumSlices)
{
for (var z = 0u; z < NumSlices; ++z)
{
var pDestSlice = (byte *)pDest->pData + pDest->SlicePitch * z;
var pSrcSlice = ((byte *)pResourceData + pSrc->Offset) + pSrc->DepthPitch * (nint)z;
for (var y = 0u; y < NumRows; ++y)
{
Buffer.MemoryCopy(
pSrcSlice + pSrc->RowPitch * (nint)y,
pDestSlice + pDest->RowPitch * y,
(ulong)RowSizeInBytes,
(ulong)RowSizeInBytes
);
}
}
}
public static void MemcpySubresource(D3D12_MEMCPY_DEST *pDest, D3D12_SUBRESOURCE_DATA *pSrc, UIntPtr RowSizeInBytes, uint NumRows, uint NumSlices)
{
for (var z = 0u; z < NumSlices; ++z)
{
byte *pDestSlice = (byte *)(pDest->pData);
byte *pSrcSlice = (byte *)(pSrc->pData);
if (IntPtr.Size == 4)
{
pDestSlice += (uint)pDest->SlicePitch * z;
pSrcSlice += (uint)pSrc->SlicePitch * z;
}
else
{
pDestSlice += (ulong)pDest->SlicePitch * z;
pSrcSlice += (ulong)pSrc->SlicePitch * z;
}
for (var y = 0u; y < NumRows; ++y)
{
byte *pTempDest = pDestSlice;
byte *pTempSrc = pSrcSlice;
if (IntPtr.Size == 4)
{
pDestSlice += (uint)pDest->RowPitch * y;
pSrcSlice += (uint)pDest->RowPitch * y;
}
else
{
pDestSlice += (ulong)pDest->RowPitch * y;
pSrcSlice += (ulong)pDest->RowPitch * y;
}
Buffer.MemoryCopy(pTempSrc, pTempDest, (long)RowSizeInBytes, (long)RowSizeInBytes);
}
}
}
