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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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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1answer
111 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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1answer
116 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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1answer
69 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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35 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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3answers
483 views

Tile Based Collision Checking In Java?

I have my map stored in 2 arrays: Tiles : Tile names TileTypes : SOLID or BASIC I want to be able to walk through BASIC Tiles (Like ground tiles). But not the SOLID Tiles (Like wall tiles). I ...
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1answer
53 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
49 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
69 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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1answer
707 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
153 views

How can I make an soundsystem with Slick?

My question would be, how can I develop an easy-to-use sound system under slick-util? Under the function a.playAsSoundEffect(1, 1, true, x, y, z); it already works to create a static position for ...
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2answers
159 views

Random white lines appearing while translating rendering slick 2d images

Hmm I'm getting this weird problem that i think may be a bug with slick but when ever i translate an image in slick 2d for some reason a weird white line appears on the left side of every image like ...
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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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35 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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2answers
214 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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42 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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1answer
119 views

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
17 views

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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1answer
131 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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3answers
5k views

LWJGL glRotatef() without rotating axes?

Okay so, I noticed when you rotate around an axis, say you do this: glRotatef(90.0f, 1.0f, 0.0f, 0.0f); That will rotate things 90 degrees around the x-axis. However, it also sort of rotates the y ...
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1answer
147 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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1answer
63 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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1answer
2k views

How to modify VBO data

I am learning LWJGL so i can start working on my game. In order to learn LWJGL I got the idea to implement the map builder so I can get comfortable with graphics programming. Now, for the map ...
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64 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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32 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
279 views

(LWJGL) Exporting Textures with JarSplice [duplicate]

I have another game that uses rectangles instead of textures which works fine. When I run it I get this error: Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All ...
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1answer
293 views

How do I render a PNG image with OpenGL?

I have an image (100×200 px) painted with Paint.NET and saved as a .png with 32-bit color depth. How can I render it using OpenGL 1.1 (with the LWJGL binding) or higher inside the display? I tried ...
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2answers
294 views

Swing GUI for games (performance) [closed]

I'm developing a game in Slick2D and I'm trying to make GUI. I've already tried TWL library, but it seems to me a bit complicated and it doesn't cover what I need. In my own implementation of GUI ...
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2answers
74 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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1answer
208 views

How to fix texture edge artefacts?

This issue has been annoying me for a long time now and even after reading a lot of articles about it, I am still unable to fix the issue. First, to my setup. I'm using LWJGL for a 2D project, ...
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1answer
75 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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54 views

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 ...
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1answer
66 views

GLSL uniforms are returning -1, but they are being used in output

I have looked this up, and found some answers and people said that if uniforms aren't important to the final output than they get thrown away by the compiler. However, in my case they are being used ...
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73 views

How do I pack my game LWJGL game into a single executable JAR with Maven?

I am trying to use Maven to manage building my LWJGL projects. The entire project needs to be packed into a single executable jar, dependencies, natives and resources included, so that can be easily ...
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1answer
109 views

Java LWJGL inventory using ArrayList

I'm making a game in Java with LWJGL 2.9.3 and Slick2D, and I'm working on creating an inventory. I managed to set it up almost completely, but I ran into a problem. When I'm rendering the slots, only ...
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41 views

lwjgl Move 2D projectile in direction from coordinate pair

So I am having issues getting my projectile to move properly at all, the help I have found have only made this worse and have not actually given any heading as to what I am doing wrong. Can anyone ...
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1answer
43 views

Java delaying commands in a method with time (Sys.getTime)

LWJGL 2.9.3 and Slick2D Hello, so Im making this game and its going quite well, but I cant figure this out: Ive got a 2d tile based map (wich is stored in a 2d array) and each tile has a coresponding ...
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1answer
41 views

Modify Element of Struct Array

I have this struct array in GLSL. struct Test { vec2 value1; vec3 value2; float value3; } uniform Test u_test[5]; How can I modify the elements of this array one at a time? I know that ...
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2answers
131 views

Algorithm for triangle picking?

So i found out that i need a triangle picking algorithm, i need to see if my mouse is over the triangle. I've heard what color picking is, but it would pretty much just drop the performance twice ...
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40 views

Java LWJGL and Slick2D collision with 2d array based map

So I've been making this game recently in java w/ LWJGL (2) and Slick2d. I've done some stuff like the map; it's a simple 2d array it goes through it and based on what id it is its gonna draw that ...
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96 views

How to get set up with java, eclipse, and slick 2d?

I have some experience in Java and other languages. I want to make games in java, and through my digging around it seems the LWJGL library is the way to go. I am trying to use Slick2D ...
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68 views

Converting glsl shaders

I need to convert these shaders from #version 400 core to #version 130 successfully but for some reason when I do it my models are not rendering properly when I load more then one type and I cant find ...
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2answers
100 views

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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How to use shader in order to render FBO lwjgl

I am making a 2D game and I want to make a light mask. So far i made a Frame Buffer where i hold my mask but I cannot apply the shader on it. When I don't use the shader the light map is drawn ...
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64 views

Offscreen frame buffer lwjgl

I want to create simple 2d lighting. So my idea is to render everything on the default buffer and then apply light mask. For the light mask i want to use frame buffer which later i will apply on the ...
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37 views

Can I “Pre-rotate” VBOs while loading them in LWJGL?

It is possible to flip VBOs horizontally and vertically by swapping around destination coordinates. Is it possible to rotate an image by any angle, such as 45 degrees, using different destination ...
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1answer
76 views

GLFW Fullscreen OS X in LWJGL 3

How does one create a fullscreen window properly in OS X from the code, instead of just expanding into the current desktop? I am referring to the sort of fullscreen window that one gets when the ...
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1answer
253 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 ...