Наложить BMP на BMP.

procedure VerbindenBmp;
var
  BmpConverte1, BmpConverte2: TBitMap;
  Blend: TBlendFunction;
begin
  BmpConverte1 := TBitMap.Create;
  BmpConverte1.LoadFromFile('2.bmp');
  BmpConverte2 := TBitMap.Create;
  BmpConverte2.LoadFromFile('1.bmp');

  Blend.SourceConstantAlpha := 130;
  if Windows.AlphaBlend(BmpConverte1.Canvas.Handle, 0, 0, BmpConverte1.Width,
    BmpConverte1.Height, BmpConverte2.Canvas.Handle, 0, 0, BmpConverte2.Width,
      BmpConverte2.Height, Blend) then Form1.Image1.Canvas.Draw(0, 0, BmpConverte1);

  BmpConverte1.Free;
  BmpConverte2.Free;
end;

procedure TForm1.FormPaint(Sender: TObject);
begin
  VerbindenBmp;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
    VerbindenBmp;
end;

procedure TacSpeedButton.Morphing(Bm1, Bm2: TBitmap; Progress: Integer);
var
  dstPixel, srcPixel: PRGBQuad;
  Weight: Integer;
  I: Integer;
begin
  if (Assigned(Bm1) and Assigned(Bm2)) then
  begin
    Bm1.PixelFormat := pf32bit;
    Bm2.PixelFormat := pf32bit;
    srcPixel := Bm2.ScanLine[Bm2.Height – 1];
    dstPixel := Bm1.ScanLine[Bm1.Height – 1];
    Weight := MulDiv(256, Progress, 100);
    for I := (Bm1.Width * Bm1.Height) – 1 downto 0 do
    begin
      with dstPixel^ do
      begin
        Inc(rgbRed, (Weight * (srcPixel^.rgbRed – rgbRed)) shr 8);
        Inc(rgbGreen, (Weight * (srcPixel^.rgbGreen – rgbGreen)) shr 8);
        Inc(rgbBlue, (Weight * (srcPixel^.rgbBlue – rgbBlue)) shr 8);
      end;
      Inc(srcPixel);
      Inc(dstPixel);
    end;
  end;
end;

procedure MixBMP(BM1, BM2: TBitMap; var BM: TBitMap);
var
  I, J: Integer;
  MinW, MinH: Integer;
begin
  BM := TBitMap.Create;
  if BM1.Width < BM2.Width then
    MinW := BM1.Width
  else
    MinW := BM2.Width;
  if BM1.Height < BM2.Height then
    MinH := BM1.Height
  else
    MinH := BM2.Height;
  BM.Width := MinW;
  BM.Height := MinH;
  for I := 0 to MinW do
    for J := 0 to MinH do
      if (Odd(I) and Odd(J)) or ((not (Odd(I))) and (not (Odd(J)))) then
        BM.Canvas.Pixels[I, J] := BM1.Canvas.Pixels[I, J]
      else
        BM.Canvas.Pixels[I, J] := BM2.Canvas.Pixels[I, J];
end;