/// <summary>
/// Unmap mapped buffer, used internally by MapAsWritable()
/// </summary>
private void UnmapBufferToPointer()
{
NOpenCL.CommandQueue commandQueue = OwnerDevice.CommandQueue;
using (commandQueue.EnqueueUnmapMemObject(Buffer, Ptr)) {
// Nothing to do...
}
}
/// <summary>
/// Map buffer as writable, used internally by MapAsWritable()
/// </summary>
private void MapBufferToPointerWritable()
{
NOpenCL.CommandQueue commandQueue = OwnerDevice.CommandQueue;
IntPtr tmpPtr;
using (commandQueue.EnqueueMapBuffer(Buffer, true, NOpenCL.MapFlags.Read | NOpenCL.MapFlags.Write, 0, (long)Buffer.Size, out tmpPtr)) {
// Nothing to do...
}
if (Ptr != tmpPtr)
{
throw new InvalidOperationException("EnqueueMapBuffer() failed to return original pointer");
}
}
/// <summary>
/// Copy memory from target device back to source pointer
/// </summary>
public void Synchronize()
{
NOpenCL.CommandQueue commandQueue = OwnerDevice.CommandQueue;
IntPtr tmpPtr;
using (commandQueue.EnqueueMapBuffer(Buffer, true, NOpenCL.MapFlags.Read, 0, (long)Buffer.Size, out tmpPtr)) {
// Nothing to do...
}
if (Ptr != tmpPtr)
{
throw new InvalidOperationException("EnqueueMapBuffer() failed to return original pointer");
}
using (commandQueue.EnqueueUnmapMemObject(Buffer, tmpPtr)) {
// Nothing to do...
}
}
