I was having issues making my program go fullscreen with:
Display.setFullscreen(true);
...but the following answer helped me: LWJGL Fullscreen not working
This answer suggested that I iterate through all the available DisplayModes and find the compatible ones. Here is the code I currently have:
if (!fullscreen)
Display.setDisplayMode(new DisplayMode(width, height));
else {
DisplayMode displayMode = null;
DisplayMode[] modes = Display.getAvailableDisplayModes();
ArrayList<String> compatibleModes = new ArrayList<String>();
for (int i = 0; i < modes.length; i++) {
System.out.println("Mode "+i+": "+modes[i].toString());
if (modes[i].getWidth() == width && modes[i].getHeight() == height
&& modes[i].isFullscreenCapable()) {
displayMode = modes[i];
compatibleModes.add(modes[i].toString());
}
}
if(compatibleModes.isEmpty()){
System.out.println("No compatible display modes!");
System.exit(-1);
}
System.out.println("Display Modes :: "+modes.length+" Total :: "+compatibleModes.size()+" Compatible :: "+displayMode.toString()+" Selected");
for (String string : compatibleModes) {
System.out.println("Compatible: "+string);
}
Display.setDisplayMode(displayMode);
Display.setFullscreen(true);
}
Display.create(new PixelFormat(), attribs);
My console log shows: (I've omitted some irrelevant modes for clarity)
Mode 0: 1920 x 1080 x 32 @24Hz
Mode 5: 1920 x 1080 x 32 @23Hz
Mode 18: 1280 x 1024 x 32 @60Hz
Mode 19: 1920 x 1080 x 32 @59Hz
Mode 20: 1920 x 1080 x 32 @60Hz
Mode 21: 1920 x 1080 x 32 @50Hz
Mode 23: 1920 x 1200 x 32 @59Hz
Mode 25: 1920 x 1200 x 32 @60Hz
Mode 26: 1768 x 992 x 32 @24Hz
Mode 28: 1920 x 1440 x 32 @59Hz
Mode 29: 2560 x 1440 x 32 @59Hz <-- I have a 1440p monitor, why is this NOT compatible?
Mode 30: 1280 x 800 x 32 @60Hz
Mode 31: 1920 x 1440 x 32 @60Hz
Mode 49: 1600 x 1200 x 32 @59Hz
Mode 50: 1600 x 1200 x 32 @60Hz
Display Modes :: 53 Total :: 3 Compatible :: 1280 x 720 x 32 @60Hz Selected
Compatible: 1280 x 720 x 32 @50Hz
Compatible: 1280 x 720 x 32 @59Hz
Compatible: 1280 x 720 x 32 @60Hz
Full screen games work fine on my computer at 1440p, so why the mode isn't available I am not sure. When I launch the program, the screen is very blurry.
How can I fix this? Thank you in advance.
Maybe try using
Display.setDisplayModeAndFullscreen(Display.getDesktopDisplayMode());
Even if it doesn't solve the 1440p issue it is still a much neater way of getting a fullscreen displaymode.