enum RenderTargetUsage : System.Enum, System.IComparable, System.IFormattable, System.IConvertible

Defines if the previous content in a render target is preserved when it set on the graphics device.

RenderTargetUsage DiscardContents

The render target content will not be preserved.

RenderTargetUsage PreserveContents

The render target content will be preserved even if it is slow or requires extra memory.

RenderTargetUsage PlatformContents

The render target content might be preserved if the platform can do so without a penalty in performance or memory usage.