public void SetData <T>(T[] data)
where T : struct
{
if ((mType & BufferType.Input) != BufferType.Input)
{
throw new OptixException("OptixBuffer Error: Attempting to set data on a non Input buffer!");
}
if (data == null || data.Length == 0)
{
return;
}
uint mySize = 0;
CheckError(Api.rtBufferGetElementSize(InternalPtr, ref mySize));
mySize *= (uint)mWidth;
if (mHeight > 0)
{
mySize *= (uint)mHeight;
}
if (mDepth > 0)
{
mySize *= (uint)mDepth;
}
uint size = (uint)(data.Length * Marshal.SizeOf <T>());
if (size > mySize)
{
throw new OptixException("OptixBuffer Error: Attempting to set data that is larger than the buffer size");
}
var l = GCHandle.Alloc(data, GCHandleType.Pinned);
var bufferMap = IntPtr.Zero;
CheckError(Api.rtBufferMap(InternalPtr, ref bufferMap));
if (bufferMap == IntPtr.Zero)
{
throw new OptixException("Buffer Error: Internal buffer cannot be mapped");
}
MemoryHelper.MemCopy(bufferMap, l.AddrOfPinnedObject(), size);
//MemoryHelper.CopyMemory(bufferMap, l.AddrOfPinnedObject(), size);
CheckError(Api.rtBufferUnmap(InternalPtr));
l.Free();
}
public void Write <T>(T r)
where T : struct
{
if (!mCanWrite)
{
throw new NotSupportedException("Optix Error: BufferStream: Cannot write to non Input Optix buffers");
}
var elemSize = Marshal.SizeOf <T>();
var sizeInBytes = elemSize;
if (mPosition + sizeInBytes > mSize)
{
throw new EndOfStreamException();
}
var l = GCHandle.Alloc(r, GCHandleType.Pinned);
MemoryHelper.MemCopy(IntPtr.Add(Buffer, (int)mPosition), l.AddrOfPinnedObject(), (uint)sizeInBytes);
mPosition += sizeInBytes;
l.Free();
}