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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How could I add XBox 360 Controller handling support to my game?

The title says it all. I'm making a 3D Open World game with OpenGL and LWJGL in Java, and I really need to move in several angles to fully feel inside the game. The problem is that I couldn't find any ...
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no lwjgl in java.library.path - however as far as I can see, everything is linked correctly! [closed]

I am very new to java but have been really enjoying it so far. Progress has been fast and I almost have a little demo game fully working. However when I export it (I'm using Eclipse) the .jar won't ...
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3D Voxel Chunks On Round Planets

So I have recently started a 3D voxel game in LWJGL that will focus on procedricly generated planets around a solar system. I currently have blocks and chunks where a chunk contains 32x32x32 blocks ...
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OpenGL [LWJGL3] - Matrix4x4 not rotating correctly

I tried today to make my own matrix4f class because of that LWJGL 3 does not include a class for it. So I arrived at rotation and it does not seem to work. I tried using the old util from LWJGL 2 and ...
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29 views

How do I move my camera in LWJGL?

I am making a game in LWJGL (2) and slick-util (I think). I am trying to move my map (It is a double int array that uses numbers to get the textures), but my code only moves the first texture to be ...
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44 views

OpenGL is box blur this slow?

I've never tried blur until recently, and by that i've noticed fps drop when doing box blur. My fps will go down from 4000-5000 fps to 1000-1500 fps. Currently rendering at 853x480 frame buffer and ...
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53 views

Slick2D fails to load small textures

I'm trying to load a small 32x32 png texture using Slick2D, however it doesn't seem to render correctly. What's odd is that larger textures do load correctly. The 32x32 texture I'm trying to load: ...
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LWJGL + Slick2D

Okay, so I know collision detection. I have made plenty of games in Java (without LWJGL or Slick2D) that use Side-Scrolling Tile Maps and collision detection, but the player seems to be glitching ...
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How to make character selection in slick2D?

I am trying to make the player able to select between two characters in slick2D, but I cant get the map class to use the variable holding which ever character the player selects. Map Class: package ...
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35 views

LwJGL 2.9.3 2D Camera

So I've been messing around with cameras in 2d. But I came across a weird bug and I was wondering if anyone could help me figure it out? public static void createDisplay(String title, int width, int ...
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LWJGL use only a part of a (blend-Map)

I have the following problem in my game: I created my terrain by an heightmap and a blendMap (for the color). The problem is, that now, when i made the terrain really big, i have a big performance ...
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43 views

Camera view/projection issue

I made a simple OpenGL program but I can figure out why the camera is not working, here it's a little fragment of the Camera class: public Matrix4f getView() { // initializes the view matrix ...
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63 views

dual contouring concept and term translations

I am working on a 3D sandbox mmo with destructible terrain, using Java and LWJGL. I looked at most options to achieve this and found that dual contouring would probably be the best option for me. I've ...
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2answers
64 views

Render terrains depending of the player position (Chunks)

Well, I have an array with all the terrains. How do I render them? I just add them to a List of terrains that are sent to the Renderer. There, every terrain of the list is rendered. The problem is ...
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47 views

Hide building roof & Hide faces/vertices depending on world location

I'm currently developing a small game for my own enjoyment and I've ran into a problem. As you probably know many third person games (such as Runescape and XCOM, for example) hide the roofs when you ...
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38 views

Multithread OpenGL to Upload Meshes

My game is rendered in dynamically generated chunks, each of which has its own mesh. Every time I generate a chunk and upload its mesh, there is a huge lag spike. Is there a good way of eliminating ...
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143 views

Optimising Voxel World Rendering

There are a couple of questions like this already. This one is different because it is specifically about rendering, as opposed to navigation and generation. I've implemented suggestions from here ...
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156 views

SDL or SFML: which is the best option if I only want to use OpenGL for my graphics? [closed]

I've read a lot about creating graphics with OpenGL in SDL and SFML over the past few days, and I want to know which one I should pick. As mentioned in most of the things that I've read, both allow ...
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43 views

Tile collision detection

Right. So I was making this simple game. The player is two tiles wide, and four tiles high. My current code is really buggy (it was better before my rewrite) Here it is: float newx = position.x ...
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81 views

C++: from LWJGL to C++ with OpenGL

I've been trying my best on porting my 3D game from Java to C++, but to no avail. I use only LWJGL with OpenGL but I cannot find any other library in C++ that supports as much as LWJGL does for Java. ...
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33 views

How do I implement a LWJGL orthogonal matrix?

As seen on the official LWJGL page, I tried. But failed. All the things I've found on SO and other sites didn't answer anything that had to do with this specifically. I've been on this for weeks. It's ...
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81 views

OpenGL Colour Issues

I am using a single VBO to store vertices in the follow format: v1X, v1Y, v1Z, v1R, v1G, v1B, v2A, v2X, ... Vertex positioning is fine, shapes show up where expected, however instead of using the ...
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3answers
81 views

Get pressed character in LWJGL (Ignoring modifier keys)

I have a basic text field setup in LWJGL, however pressing any modifier keys (Shift, F1-19, Page Up, etc.) inputs a space into the text field. How would I ignore those characters? Here's some code so ...
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54 views

Java lwjgl 3D custom terrain shape

I have a Terrain class that generates a terrain with 2 nested for loops, one for vertices, and one for indices. for(int i = 0;i < WIDTH;i++){ for(int j = 0;j < HEIGHT;j++){ ...
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Why does LWJGL's CLPlatforms interface return null, and how can I change this?

I'm running Jeff Heaton's OpenCL example from https://github.com/jeffheaton/opencl-hello-world ; in hopes of using the information for terrain generation for another Java program later. I'm also ...
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109 views

How could we use trigonometry for moving around a 3D World?

Well I have a question about geometry and 3-Dimensional player movement in general. I'm using Java, OpenGL and LWJGL. This is basically what I got: currentFrontSpeed: Is a float that contains the ...
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68 views

Image rendering with additional space around it

When I try to display an image that is 400 pixels wide and 800 pixels high, it is not displayed this way. Instead it is diplayed like this: Instead it is displayed like this You can see at the bottom ...
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31 views

LWJGL 3 GLSL normal problem

I have a pretty strange problem today. I started to make a 2d game yesterday, and everything was right until now. I wanted to make a lighting system, wich required me to send the vertexnormal from ...
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1answer
50 views

How can I fade in 3D foliage smoothly?

Take a look at this picture: This is a picture of me diving down from a high height. As you can see, the world is a simple world with grass, snow, trees, etc. The problem here is the 3D foliage. If ...
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1answer
39 views

OpenGL color overlay

I want to create a pause menu where everything in the background gets darker. I've looked up a bunch of possible solutions (even the second page on google) but it doesn't seem to work. I do already ...
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1answer
67 views

Frustum Culling: How to calculate if an angle is between another two angles

I am trying to implement frustum culling but got stuck on how to determine if the angle that the object is from the player is in the FOV of the player. So basically I have the following information: ...
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41 views

Slick & LWJGL Flickering Problem

I have an flickering problem with rendering tiles. Rendering Method. int tileSize = TileManager.tileSize; for(int y = 0 ; y < mapHeight ; y++){ for(int x = 0 ; x < mapWidth ; ...
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30 views

How to hook up mouse listener in Slick2D

I'm trying to code a "Button"-class in java using the Slick2D-GameEngine. Does anyone who is familiar with this engine know where and how exactly to hook up this class to the GameContainer's ...
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37 views

Passing TexChoords to Shader via VAO/VBO isn't working

Simply put, I'm trying to move away from deprecated methods in my code. Currently I'm trying to get shaders to handle translating, rotating, and texturing my models. I'm only having problems with ...
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39 views

LWJGL Using wrong openGL version

I am trying to make a game in java using the LibGDX library witch is an extension of LWJGL. LWJGL is claiming that I need at least OpenGL 2.0 with the FBO extension but I only have version 1.1.0. So I ...
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How to pitch, yaw, roll, an object like a flight simulator in OpenGL?

I'm working on a college Graphics project using LWJGL (OpenGL in Java). I've done most of the scene but I got a problem in figuring out the jet's orientation. Here's how I tried it at the very ...
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1answer
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ARBShaderObjects.glDeleteObjectARB vs GL20.glDeleteShader to remove shader?

I've created a shader object using ARBShaderObjects.glCreateShaderObjectARBand I'm wondering exactly how I'm suppose to remove said shader. It seems both ARBShaderObjects.glDeleteObjectARB and ...
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55 views

LWJGL3 Input for single press of keyboard

I am making a game with lwjgl and GLFW and am having a hard time figuring out how to check for a single press on the keyboard.
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112 views

Java - LWJGL OBJ Loader with Materials not rendering

So I successfully loading my obj file but I obviously want to get materials on it. I added the vt(texture) to the OBJLoader and the Model.render but still rendering textureless. I have exported the ...
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1answer
106 views

VBO rendering crashed with glDrawArrays

I'm playing around in LWJGL3 and I'm experiencing an issue regarding glDrawArrays. At glDrawArrays the JVM crashes. I'm using modern OpenGL and therefore I have my own shaders and matrix ...
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1answer
144 views

How can I optimize block rendering in an OpenGL game?

I am working on a game with blocky graphics -- similar to Minecraft. My world generation algorithm is similar to the Diamond-Square algorithm. The terrain was initially too rough and uneven, so I ...
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59 views

Framebuffer texture shows as blank white when rendered after TrueTypeFont

I have a working framebuffer class. However, when I render out the framebuffer after rendering text with Slick2D's true type font class, it is completely white. Below is all of the classes that are ...
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30 views

How can I move the camera directly under a certain plane?

I am attempting to render a "reflection" of a scene for water: To create this illusion, I need to render the scene from below, and then ignore all geometry below the water line. As such, I need ...
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17 views

LWJGL Applet Security Exception

I created small game in Java using LWJGL 2.9.3 and would like to add it to webpage as Java applet. I have followed this tutorial and have used this app loader. All the Java code works and I can tun ...
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1answer
56 views

Strange Rotation in LWJGL

What I am trying to do is to create a Rubik's Cube game using LWJGL in Java. I have a lot of it done already, the only problem is the rotating. It just isn't working. I've tried multiple ways of ...
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2answers
63 views

opengl z index changing does not zoom in

I am making a simple opengl application where I have a cube and I want to move forward to it with the glTranslate3d function, where I change the z index. One would expect the object to get bigger ...
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107 views

How can I make terrain texturing look detailed both close-up and far away?

I attempting to make my game have very detailed textures, and in general look pretty. However, I'm having some issues with that. Let's take a look at a rock texture close up: Picture. As you can ...
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81 views

Is it possible to use OpenCL in libgdx?

Been looking for a way to implement some OpenCL stuff in my libgdx project. It's possible via LWJGL which libgdx is based on, but it's only for the Desktop environment. Would like to have it cross ...
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1answer
72 views

Java heart based health mechanic

so I've made a basic game in java w/ LWJGL 2 and Slick. Right now Im working on the hud and health system. I'm kindof trying to get a minecraft like health system, 15 hearts for health,but I want the ...
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OpenGL model rendering issue

Currently my game will not display models properly on my PC but they load right on a pc that supports openGL 3.0, and as my laptop only supports 2.1 the last model rendered will show properly but the ...