message: Fix readbacks of large buffers in D3D12
diff: @@ -881,7 +881,7 @@ void D3D12DebugManager::GetBufferData(ID3D12Resource *buffer, uint64_t offset, u
  {
  uint64_t chunkSize = RDCMIN(length, m_ReadbackSize);
  - m_DebugList->CopyBufferRegion(m_ReadbackBuffer, 0, buffer, offset, chunkSize);
  + m_DebugList->CopyBufferRegion(m_ReadbackBuffer, 0, buffer, offset + outOffs, chunkSize);
  m_DebugList->Close();
  