Reducing CPU Usage When Drawing Large Images With Alpha Transparency Java -


i'm in process of making game in java. in game when player damaged image drawn alpha transparency on drawing. image covers entire screen, obscuring player's view. process consumes ~50% of computer's cpu. there way of optimizing process?

sscce:

package com.johng.lonevessel.gui;  import java.awt.alphacomposite; import java.awt.borderlayout; import java.awt.color; import java.awt.dimension; import java.awt.graphics; import java.awt.graphics2d; import java.awt.image; import java.awt.event.actionevent; import java.awt.event.actionlistener;  import javax.swing.jframe; import javax.swing.jpanel; import javax.swing.timer;  import com.johng.assets.assets; import com.johng.assets.images.images;  public class test {     public static void main(string[] args) {         new test();     }  //gets image public static final image redvision = assets.getimage(images.redvision);  public test() {     jframe frame = new jframe();      frame.setsize(new dimension(600, 600));      gamepanel gamepanel = new gamepanel();       frame.getcontentpane().setlayout(new borderlayout());     frame.getcontentpane().add(gamepanel);      frame.setvisible(true);      gamepanel.start(); }  @suppresswarnings("serial") public class gamepanel extends jpanel implements actionlistener {     timer timer;     player player;     public gamepanel() {         super();         timer = new timer(15, this);         player = new player();     }      @override     public void paintcomponent(graphics g) {         graphics2d g2d = (graphics2d) g;         //game drawing here         g2d.setcolor(color.black);         g2d.fillrect(0, 0, getwidth(), getheight());          if (player.gethealth() / player.getmaxhealth() < 0.25 && player.gethealth() > 0) {             g2d.setcomposite(alphacomposite.getinstance(alphacomposite.src_over,                     1 - player.gethealth() / player.getmaxhealth() * 4));             g2d.drawimage(test.redvision, 0, 0, getwidth(), getheight(), null);         }     }      public void start() {         timer.start();     }      @override     public void actionperformed(actionevent ae) {         repaint();     }      public class player {         //bare-bone player purpose of question         public player() {          }          public float gethealth() {             return 10;         }          public float getmaxhealth() {             return 100;         }     } } }


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