现在我正在使用Dummy’s guide to drawing raw images in Java 2D中采用的代码
在配备Oracle JVM,Nvidia 8600 GTS和Intel Core 2Duo 2.6 GHz的Debian i386上,我获得了240 FPS,适用于800x600窗口。

存在更快的方法吗?我的代码:

import java.awt.Graphics;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;

public class TestFillRasterRate
{
    static class MyFrame extends JFrame
    {
      long framesDrawed;
      int col=0;

      int w, h;
      int[] raster;
      ColorModel cm;
      DataBuffer buffer;
      SampleModel sm;
      WritableRaster wrRaster;
      BufferedImage backBuffer;

      //@Override public void paint(Graphics g)
      public void draw(Graphics g)
      {
        // reinitialize all if resized
        if( w!=getWidth() || h!=getHeight() )
        {
            w = getWidth();
            h = getHeight();

            raster = new int[w*h];

            cm = new DirectColorModel(24, 255, 255<<8, 255<<16);
            buffer = new DataBufferInt(raster, raster.length);
            sm = cm.createCompatibleSampleModel(w,h);
            wrRaster = Raster.createWritableRaster(sm, buffer, null);
            backBuffer = new BufferedImage(cm, wrRaster, false, null);
        }

        // produce raster
        for(int ptr=0, x=0; x<w; x++)
            for(int y=0; y<h; y++)
              raster[ptr++] = col++;

        // draw raster
        g.drawImage(backBuffer,  0,0, null);
        ++framesDrawed;

        /**
        SwingUtilities.invokeLater(new Runnable()
        {   @Override   public void run()
            {     repaint();
            }
        });/**/
      }
    }

    public static void main(String[] args)
    {
      final MyFrame frame = new MyFrame();

        frame.setSize(800, 600);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);

        // draw FPS in title
        new Timer(1000, new ActionListener()
        {   @Override public void actionPerformed(ActionEvent e)
            {   frame.setTitle(Long.toString(frame.framesDrawed));
                frame.framesDrawed = 0;
            }
        }).start();

      /**/
      frame.createBufferStrategy(1);
      BufferStrategy bs = frame.getBufferStrategy();
      Graphics g = bs.getDrawGraphics();
      for(;;)
        frame.draw(g);
      /**/
    }
}


java - Java中最快的绘制像素缓冲区的方法是什么-LMLPHP

最佳答案

获取更多FPS的方法可能是使用BufferStrategy。而不是使用通过Graphics方法传递的paint(),您必须在外部使用例如jFrame.createBufferStrategy(/*number of buffers*/)和BufferStrategy bufferStrategy = jFrame.getBufferStrategy()创建它们。
如果随后要访问Graphics,请使用Graphics g = bufferStrategy.getDrawGraphics(),然后照常绘制图像。我不确定是否可以通过这样一个简单的示例真正改善FPS,但是当进行更复杂的绘制时,肯定会。

编辑:创建仅具有1个后缓冲的BufferStrategy几乎没有用,因为它将直接继续直接绘制到屏幕上。缓冲区大小应为2-5,具体取决于您的图形卡可以处理多少个vram。

07-28 03:49