XnaCircularBuffer BufferIsFullResetToBeginning Method Delta Engine Documentation
As long as we did not put anything new into the buffer we can discard the old content. However once AddDataNative was called we need to use NoOverwrite until drawing happens.

Namespace: DeltaEngine.Graphics.Xna
Assembly: DeltaEngine.Graphics.Xna (in DeltaEngine.Graphics.Xna.dll) Version: 1.1.1.0 (1.1.1)
Syntax
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protected override void BufferIsFullResetToBeginning()
See Also
XnaCircularBuffer Class
DeltaEngine.Graphics.Xna Namespace