一年前的东西，忘记贴上来，有bug，不能透明

 

  void drawGame(Graphics g)
  {
    DirectGraphics dg;
    if (bkSrc==null){
      test = Image.createImage(bkWidth,bkHeight);     //为虾米要新创建一个涅，因为原来的image是不可变的，不能getPixels
      test.getGraphics().drawImage(bk,0,0,g.LEFT|g.TOP);
      bkSrc = new short[bk.getWidth()*bk.getHeight()];
      dg = DirectUtils.getDirectGraphics(test.getGraphics());
      dg.getPixels(bkSrc, 0, bkWidth, 0, 0, bkWidth, bkHeight, 444);
    }
   
    if (objSrc==null){
      test = Image.createImage(objWidth,objHeight);
      test.getGraphics().drawImage(obj,0,0,g.LEFT|g.TOP);
      objSrc = new short[obj.getWidth()*obj.getHeight()];
      dg = DirectUtils.getDirectGraphics(test.getGraphics());
      dg.getPixels(objSrc, 0, objWidth, 0, 0, objWidth, objHeight,444);
    }
    dg = DirectUtils.getDirectGraphics(g);
    g.drawImage(bk,0,0,g.LEFT|g.TOP);
    long a = System.currentTimeMillis();
    short drawSrc[] = new short[obj.getWidth()*obj.getHeight()];   
    for (int i = 0;i<objSrc.length;i++){
      short obj = objSrc[i];
      int line = i/objWidth;
      int row = i%objWidth;
      short bk = bkSrc[line*bkWidth+row];
      int objR = obj>>8&0xf;
      int objG = obj>>4&0xf;
      int objB = obj&0xf;
      int bkR = bk>>8&0xf;
      int bkG = bk>>4&0xf;
      int bkB = bk&0xf;
      objR = objR*per/100+bkR*(100-per)/100;
      objG = objG*per/100+bkG*(100-per)/100;
      objB = objB*per/100+bkB*(100-per)/100;
      System.out.println(objSrc[i]&0xf000);
      drawSrc[i] = (short)(objSrc[i]&0xf000|((objR<<8)|(objG<<4)|objB));
    }
    dg.drawPixels(drawSrc,false,0,objWidth,0,0,objWidth,objHeight,0,444);
    g.drawString((System.currentTimeMillis()-a)+"",0,0,g.LEFT|g.TOP);
  }