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Index › Programming Questions & Help › OpenGL and 3D Libraries › fullscreen / dual monitors / 2 viewports
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fullscreen / dual monitors / 2 viewports? (Read 3864 times)
ch
fullscreen / dual monitors / 2 viewports?
Jul 17th, 2007, 6:28pm  
searching for nirvana... i'd like to have fullscreen, with an application spanning 2 monitors; the window has 2 viewports (as described here: http://processing.org/discourse/yabb_beta/YaBB.cgi?board=OpenGL;action=display;num=1181318085
)
this is on windows XP

i've tried the technique of having a larger window and positioning it slightly off (as described here under "WINDOWED":

http://processing.org/discourse/yabb_beta/YaBB.cgi?board=Programs;action=display;num=1182293890;start=1#1

but then the window doesn't fill the screen because of the space left for the task bar.

i've tried "Present Mode" but of course that only works with a single monitor

i've tried the usual full screen code applied here:

http://processing.org/discourse/yabb_beta/YaBB.cgi?board=OpenGL;action=display;num=1183320480

but then i only get one monitor working full screen and the other one doesn't appear at all.

finally, i tried editing that code for two monitors, as below, but that had a similar result.

any suggestions....?

Code:


here's my latest code:

void FullscreenOn2()  
{  
  noCursor();  

  frame.dispose();    
  frame.setUndecorated( true );    

  GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
  GraphicsDevice[] gs = ge.getScreenDevices();
    gs[0].setFullScreenWindow( frame );

    if (gs[0].isDisplayChangeSupported())  
    {    
	
	int refreshRate = gs[0].getDisplayMode().getRefreshRate();
	int bitDepth = gs[0].getDisplayMode().getBitDepth();
	
	DisplayMode myDisplayMode = new DisplayMode(    
	gs[0].getDisplayMode().getWidth(), gs[0].getDisplayMode().getHeight(), bitDepth, refreshRate);    
	gs[0].setDisplayMode( myDisplayMode );    
    }  
  
    gs[1].setFullScreenWindow( frame );
    if (gs[1].isDisplayChangeSupported())  
    {    
	DisplayMode myDisplayMode = new DisplayMode(    
	480, 640, 32, DisplayMode.REFRESH_RATE_UNKNOWN);    
	gs[1].setDisplayMode( myDisplayMode );    
    }  
}



p.s. might an alternative be to have 2 different windows instead of 2 viewports? ... no idea how to go about that though... thanks for any pointers!
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smallfly
Re: fullscreen / dual monitors / 2 viewports?
Reply #1 - Jul 17th, 2007, 7:23pm  
This may help.

Quote:


private static secondCanvas sCanvas;
private static secondApplet sApplet;

import java.awt.*;
import java.awt.event.*;
import processing.core.*;

int xPos = 0;
int yPos = 0;

void setup() {
 size(400, 400);
 smooth();
 background(0);
 noStroke();

 sApplet = new secondApplet();
 sCanvas = new secondCanvas("follower", sApplet, screen.width/2, screen.height/2);
}

void draw() {
 background(0);
 fill(200, 100, 0);
 rect(xPos++,0, 100, 100);
 if(xPos >= width) xPos = 0;
}


public class secondApplet extends PApplet {

 public void setup() {
   size(400, 400);
   background(255, 0, 0);
   frameRate(10);
 }

 public void draw() {
   background(0);
   fill(200, 100, 0);
   rect(0, yPos++, 100, 100);
   if(yPos >= height) yPos = 0;
   ;
 }
}


public class secondCanvas extends Frame {
 public secondCanvas(String name, PApplet embed, int x, int y) {
   super(name);

   // add the PApplet to the Frame
   setLayout(new BorderLayout());
   add(embed, BorderLayout.CENTER);

   // ensures that the animation thread is started and
   // that other internal variables are properly set.
   embed.init();

   // add an exit on close listener
   addWindowListener(new WindowAdapter() {
     public void windowClosing(WindowEvent evt) {
       // exit the application
       System.exit(0);
     }
   }
   );

   setSize(400, 400);
   setLocation(x, y);
   setVisible(true);

 }
}
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ch
Re: fullscreen / dual monitors / 2 viewports?
Reply #2 - Jul 18th, 2007, 12:09pm  
hi thanks for this, works pretty well!

i'm seeing a bit of a performance hit though, working with quite a few 3d forms in opengl -- is it my imagination or is this more processor-intensive than having two viewports in a single window? if so, are there any other ways around this?

thanks again.
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smallfly
Re: fullscreen / dual monitors / 2 viewports?
Reply #3 - Jul 21st, 2007, 6:48pm  
hi,

I haven't found some time yet to look into that, so I won't be able to tell. I will keep this thread updated if I find something new.
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JohnG
Re: fullscreen / dual monitors / 2 viewports?
Reply #4 - Jul 21st, 2007, 7:02pm  
It will run slower than 2 viewports, since they're completely seperate OpenGL contexts, the graphics card will be constantly switching back and forth between the two. As a single window it's just 2 views of the same context.
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ch
Re: fullscreen / dual monitors / 2 viewports?
Reply #5 - Jul 21st, 2007, 8:17pm  
thanks johng for the confirmation, as i suspected...

do you have any recommendations for getting fullscreen across two monitors using a single window with 2 viewports? (as it happens i'm using the code you suggested a while back for 2 viewports and i know at that stage i said i wasn't going to need 2 screens but you know how things change...... your viewport code works great though, thank you very much for that!)
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ch
Re: fullscreen / dual monitors / 2 viewports?
Reply #6 - Jul 26th, 2007, 12:29am  
got it; for future reference, here's the answer:
http://processing.org/discourse/yabb_beta/YaBB.cgi?board=Syntax;action=display;num=1185318989
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