Declarations

procedure BlockTransfer(Dst: TCustomBitmap32; DstX: Integer; DstY: Integer; DstClip: TRect; Src: TCustomBitmap32; SrcRect: TRect; CombineOp: TDrawMode; CombineCallBack: TPixelCombineEvent = nil);
procedure BlockTransferX(Dst: TCustomBitmap32; DstX, DstY: TFixed; Src: TCustomBitmap32; SrcRect: TRect; CombineOp: TDrawMode; CombineCallBack: TPixelCombineEvent = nil);

Overload Details

Overload 1

procedure BlockTransfer(Dst: TCustomBitmap32; DstX: Integer; DstY: Integer; DstClip: TRect; Src: TCustomBitmap32; SrcRect: TRect; CombineOp: TDrawMode; CombineCallBack: TPixelCombineEvent = nil);

Copies or blends an integer-aligned sub-rectangle from Src into Dst at integer position (DstX, DstY).

Parameter	Type	Description
Dst	TCustomBitmap32	Destination bitmap.
DstX, DstY	Integer	Destination top-left corner coordinates.
DstClip	TRect	Clipping rectangle for the transfer operation.
Src	TCustomBitmap32	Source bitmap.
SrcRect	TRect	Sub-rectangle of source bitmap to transfer.
CombineOp	TDrawMode	Pixel drawing/combining mode.
CombineCallBack	TPixelCombineEvent	Optional custom pixel combining callback.

Overload 2

procedure BlockTransferX(Dst: TCustomBitmap32; DstX, DstY: TFixed; Src: TCustomBitmap32; SrcRect: TRect; CombineOp: TDrawMode; CombineCallBack: TPixelCombineEvent = nil);

Copies or blends an integer sub-rectangle from Src into Dst at fixed-point sub-pixel position (DstX, DstY) using bilinear anti-aliasing.

Parameter	Type	Description
Dst	TCustomBitmap32	Destination bitmap.
DstX, DstY	TFixed	Fixed-point destination top-left coordinates.
Src	TCustomBitmap32	Source bitmap.
SrcRect	TRect	Source sub-rectangle.
CombineOp	TDrawMode	Pixel combining mode.
CombineCallBack	TPixelCombineEvent	Optional custom pixel combine callback.

Description

BlockTransfer performs high-speed direct unscaled pixel transfers from a source bitmap to a destination bitmap with optional clipping and pixel blending. BlockTransferX allows fixed-point fractional offsets for sub-pixel accuracy.