### Buffer Manager Functions

These functions are members of the GA_bufferFuncs group. The functions provide support for allocating, freeing, copying and drawing on offscreen video memory buffers. The buffer manager functions should always be used to manage offscreen surfaces when possible, for maximum performance and compatibility.

AllocBuffer | BitBltBuf
BitBltColorPattBuf | BitBltFxBuf
BitBltPattBuf | BitBltPlaneMaskedBuf
DrawRectBuf | DstTransBltBuf
FlipToBuffer | FlipToStereoBuffer
FreeBuffer | GetClipper
GetFlippableBuffer | GetFlipStatus
GetPrimaryBuffer | InitBuffers
LockBuffer | SetActiveBuffer
SetClipper | SrcTransBltBuf
StretchBltBuf | UnlockBuffer
UpdateCache | UpdateFromCache
WaitTillFlipped |

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