procedure Rasterize(Dst: TBitmap32); overload;
procedure Rasterize(Dst: TBitmap32; const DstRect: TRect); overload;
procedure Rasterize(Dst: TBitmap32; const DstRect: TRect; const CombineInfo: TCombineInfo); overload;
procedure Rasterize(Dst: TBitmap32; const DstRect: TRect; Src: TBitmap32); overload;
Calling rasterize will start the rasterization process.