The Lightweight Java Game Library (LWJGL) provides access to high performance, cross-platform libraries OpenGL and OpenAL. Additionally LWJGL provides access to controllers such as Gamepads, Steering wheel and Joysticks.

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Add Objects in LWJGL without using glTranslationf function

It is possible to add an object in LWJGL without using translation function (glTranslatef) ? and if it is possible does this improve somehow performance ?
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1answer
121 views

Drawing fonts with LWJGL3 with OpenGL

I'm very sorry if this question has already been answered, but since I've been struggling with this for many days I thought I'd give it a shot here. My goal is to somehow render some text on the ...
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1answer
118 views

Rotating a swinging sword in LWJGL gives wierd results

I'm making a 2d top down game in Java using LWJGL(OpenGL, essentially). I recently tried adding a swinging sword mechanism. My coordinate system is set to the bottom left FOR ALL objects. The rotation ...
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1answer
233 views

Structure gameobjects and call events

I'm working on a 2D tile based game in which the player interacts with other game objects (chests, AI, Doors, Houses etc...). The entire map will be stored in a file which I can read. When loading the ...
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1answer
567 views

LWJGL SlickUtil Texture Binding

I am making a 3D game using LWJGL and I have a texture class with static variables so that I only need to load textures once, even if I need to use them more than once. I am using Slick Util for this. ...
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1answer
295 views

LWJGL: Camera distance from image plane?

Let me paste some code before I ask the question... public static void createWindow(int[] args) { try { Display.setFullscreen(false); DisplayMode d[] = ...
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1answer
40 views

Rendering a texture with OpenGL

I have an image (100x200 px) painted with Paint.NET and saved as a .png with 32-bits color depth. How can i render this image using OpenGL 1.1 (with the LWJGL binding) or higher inside the display? I ...
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1answer
65 views

Opengl Best VAO model for voxel engine

I make a voxel engine on LWJGL 3 (OpenGL binding for JVM). I store all object data in world class. World is subdivided into 32*32*32 chunks. Chunks use octree storage. The main part of all my ...
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1answer
46 views

AABBs in lwjgl 2.9.3

I think I have succeeded in making an aabb out of 6 quads in opengGL but how would i get it to stay with its centre-point at the centre-point of all objects. I know it is easy for one object how would ...
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1answer
118 views

How can I make an soundsystem with slick?

My Question would be , how can I develop an easy-to-use Soundsystem under slick-util? Under the function a.playAsSoundEffect(1, 1, true, x, y, z); it allready works to create a static ...
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1answer
417 views

App using LWJGL can't find display mode extension on Linux

I'm running LWJGL app on Ubuntu virtual machine with no phisical graphic card. I set up Xvfb and Mesa3D but it fails with exception java.lang.ExceptionInInitializerError: null at ...
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1answer
146 views

LWJGL - Keyboard.next() not firing

I am trying to make a class which will handle all of my inputs, however Keyboard.next() isn't returning true. Here is my code. while(Keyboard.next()) { if(Keyboard.getEventKey() == ...
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1answer
37 views

Scrolling is going too fast

I used delta based off the LWJGL tutorials and it works (I get 16 or 17 delta) but everything is scrolling nonstop. Here's how I render things: public class Game { int camX; int camY; ...
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1answer
178 views

Get stick analogue XY position using Jinput in lwjgl

I want to capture the movement of the analogue stick of the gamePad. is there any equivalent function to this? public void mouseMoved(MouseEvent mouseEvent) { mouseEvent.getX(); //return the X ...
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1answer
804 views

LWJGL font not rendering, even with depth test and texture_2D

I'm running into an odd little problem here. I'm attempting to render a basic console over my LWJGL-based application, which should be easy enough through a decorator pattern of renderers (as in, one ...
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0answers
296 views

Exporting from eclipse with lwjgl using jarsplice

I am in the process of developing a 2D tilebased rpg with eclipse, lwjgl, and slick util. For some reason eclipse seems to be lagging heavily which doesnt make sense as all i have rendering is a ...
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0answers
310 views

Why do my LWJGL fonts have dots and lines around them?

When we render fonts there are weird dots and lines around the text. I have no idea why this would happen. Here is an image of what it looks like: Our font class looks like this: package ...
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17 views

GLFW - Event Polling System

I need some help on design. I'm making an event polling system, where a window is notified of events as they happen. I handle events at a system level in my GLFW backend, by using callbacks. ...
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0answers
30 views

Modern OpenGL Sprite Drawing - Not Rendering

I'm trying to render sprites based of this tutorial, in LWJGL. Here's what I have so far, with descriptions of what class I use: Transformable2D is a class that holds transform matrices meant for ...
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16 views

GLFW/LWJGL black screen flicker issue

Im having a problem with creating a borderless fullscreen window in LWJGL using GLFW. It creates the (in this case black - as intended) window, however when the focus changes (f.e. tabbing int/out), ...
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36 views

Texture artifacts depending on texture size

I get some strange artifacting with textures depending on their size. I run OpenGL 3.3 with an GTX 580 so it should definitely support non power of two textures. I've narrowed down the problem ...
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LWJGL - First time trying to implement shadow mapping

It's my first time when I implementing shadow mapping. My problem is shadows don't work in any way. First I just render all of the object to a FBO with simple shader. shadowMapGenerator.vs: #version ...
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Vertex Skinning OpenGex Incorrect Transformations

I'm following the formula here, I'm using LJWGL, OpenGl, OpenGex, and Blender: I implemented the code and it works but there is a few things. First, there is a gap between the two bones, or on each ...
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38 views

LWJGL OpenGL Spotlight half-showing

Problem: Only half of the light is showing. Lighting Inilization code: glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnable(GL_DEPTH_TEST); glEnable(GL_NORMALIZE); ...
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How can I render several rectangles efficiently? (LWJGL)

I'm working with OpenGL3+ rendering and I am coming from OpenGL1.5. In GL1.5 I had rendered things like this: public class GraphicsDead { int vboVertexHandle; int vboColorHandle; public ...
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OpenGL camera scrolling too fast

I'm using the code from this tutorial but in Java and LWJGL. The problem is I want the player to click and drag around the world with the mouse. I tried adding the mouse dx (velocity) to the camera ...
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JBullet - Object is colliding at the wrong location!

I'm trying to make archers walk on my ship. I create the ship mesh like this: { Model mesh = null; try { mesh = OBJLoader.loadModel(new File("res/ship.obj")); } ...
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32 views

LWJGL Using .setIntialBackground and Drawing Textures?

I have been trying to create a game with LWJGL, however I have recently discovered that changing the background color using Display.setInitialBackground() with glClear and trying to draw a texture at ...
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35 views

JBullet - Two RigidBodies will not collide

I am adding two ships into my collision world. (The green dots are the collision shape (an ObjectArrayList) that I am passing to the ConvexHullShape) However they don't seem to collide. In fact, ...
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68 views

Hard time implementing AABB collision into a platformer

I have AABB collision working fine. The problem is I can't get it to work with a platformer style game. The collision makes the player move a bit static when colliding and the gravity wont work with ...
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36 views

Opengl camera handling

I normally do parallax scrolling with x and y which works, but I'd like to make a camera class instead so I can rotate as well. Right now the camera is set to the player's position but doesn't scroll. ...
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152 views

How to toggle fullscreen with lwjgl

I'm using glfw in lwjgl-3 to try to create a toggleFullscreen method. However it always gives me errors. I saw this question Toggle Fullscreen at Runtime but it didn't help because glfwOpenWindow() ...
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Trouble with Raycast Selection using OpenGL

I am currently having trouble with a custom model editor in which I want to implement model selection (eventually featuring face selection to have something like "click-and-drag" to extend the cubes). ...
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17 views

Stack matrix affecting shooting mechanics

I attempted to make a scroller game using parallax scrolling in LWJGL. Everything is fine but I'm having trouble with the matrix stack and the bullets. So basically when I shoot the bullet it moves ...
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26 views

LWJGL: getDisplayModes() on Linux with two monitors

When calling getDisplayModes() on a Linux machine with two monitors I only get one single resolution, that is, the current resolution set on the main monitor. However, calling xrandr directly gives me ...
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55 views

How to setup States in NIftyGUI and LWJGL

I think this is a simple question but I just cannot figure it out. I have a main menu that is using nifty gui and then my game which is rendered using OpenGL Code (LWJGL) I cannot figure out how to ...
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35 views

VBO - Update Vertex data

My game will be a 2D Sidescroller and I'm working on moving objects around. Since I want to animate and move my sprites around, how do I update the vertex data? This is my current class for GUI ...
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57 views

Lwjgl Textures Overriding true type font

I am making a game in java but I recently came across a problem when I bound my textures, my true type fonts would start copying the texture and i would just see a wall of color where my words had ...
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39 views

LWJGL 3 crashing on nglDrawArrays

I have 2 classes I'm trying to use to render a triangle, and it's crashing on nglDrawArrays, the error is in the native code, and the only information I'm getting from the JVM is a native error ...
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218 views

Proper way to load pixel art textures for 2D graphics

I am working on developing a game using LWJGL which is the java bindings for OpenGl. I have just finished the code for loading and animating sprite sheets using a png and xml file. When the texture ...
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101 views

Using VBOs for the begginer

I've spent the past 10 hours trying to understand this and couldn't get any good help. I whatched a youtube video on VBOs and have whatched it many times and tried many things, but I STILL DON'T GET ...
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75 views

(LWJGL)How would a game patch work

I made a game in java that I plan on selling some day. When I do eventually release it,I want people to receive patches instead of buying it again. How does a game patch work, and where the heck do I ...
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275 views

Adding 2d hud/gui to a 3d game engine which has no 2d features

I have been following the 3d game engine tutorial series made by theBennyBox for a few months now, and have finally decided to create a game with it. My problem is that it is a 3d only engine which ...
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105 views

how to do picking in 2d lwjgl

I searched the whole internet, but I couldn't find something useful. How to do picking (like ray picking) in lwjgl in orthographic mode (2d)? I think this is less confusing than picking in 3d, but I ...
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0answers
238 views

LWJGL Rotating is moving

I am trying to rotate my QUAD even just a little bit. I have read pages like http://www.java-gaming.org/topics/lwjgl-tutorial-series-moving-and-rotating-triangle/30679/view.html In my render() ...
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256 views

LWJGL Translation Problems with Matrix4f Class

I've just implemented a simple 3D Camera into my current game program using matrices and shaders. (I've basically just implemented the simple camera found here: ...
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137 views

Why must VBOs be “broken in?”

If I create a VBO in LWJGL of, say, 128,000 vertices, and push it to the graphics card, there's a considerable delay. This delay lasts for about 11 to 12 milliseconds. The same thing happens the ...