Tagged Questions

1
vote
1answer
41 views

Can't get Depth testing to work (cube faces shine through)

I'm making my first steps with OpenGL with LWJGL. I am currenlty constructing a... wait for it... CUBE. Quite creative... Up to now i made it to three of its faces and thats where the Problems began. ...
-2
votes
2answers
64 views

Using Win32 and OpenGL in game loop? [closed]

I'm making a Java game library (too many problems with the existing ones) and I'm building the win64 native right now. In the native I need to handle the window, OpenGL contexts, and advanced ...
1
vote
0answers
73 views

How to implement a multi-platform Java 2D game engine's graphics?

I'm not sure whether this question should be posted here. I'm trying to make a basic generic game engine in Java. Here's what I have so far. public abstract class Device { public abstract void ...
-1
votes
0answers
63 views

OpenGL 2D Screen to 3D World

I'm in the process of making a block voxel game (not minecraft clone) and I now need to be able find which block I am looking at. I've come across two methods: Ray tracing and gluUnProject I found a ...
-3
votes
0answers
35 views

Using an OpenGL wrapper in Swing? [closed]

I'm building a custom OpenGL wrapper in Java. But I was wondering how do I link OpenGL commands to a Swing window? Thanks in advanced!
1
vote
2answers
72 views

Calling opengl32.DLL from java?

I don't like LWJGL in some cases, so I prefer to use Swing. The thing is that Swing doesn't have OpenGL. I have tried JOGL and it's a mess to install, needs external jars, and I have yet to get it ...
-1
votes
0answers
58 views

LWJGL - Switching from 3D to 2D to render text with NO external librarys [closed]

I want to render 2D quads on my screen by switching to a 2D scene then switching back to 3D. I dont want to use any external librarys besides LWJGL. This is what I got so far: private static void ...
1
vote
0answers
49 views

How to put OpenGL in a state for drawing blended, colored, nontextured polys?

Using OpenGL1.1 (sadly) I'm trying to draw a cube, which is colored and alpha blended. It is instead showing up as opaque black. Even without including alpha in the color it still shows up as opaque ...
1
vote
1answer
186 views

Sidescrolling troubles [closed]

I'm making a sidescroller using java and Lwjgl. But I'm having some trouble getting the screen to actually ... well... sidescroll. The world is randomly generated and drawn in blocks. Like so: ...
4
votes
2answers
176 views

3D models on 2D tilemap perspective when scrolling

I am creating a small top-down game, where the player traverses a 2D tilemap, with an illusion of depth provided by 3D models for things like buildings or trees. Having gotten to the point where I ...
2
votes
1answer
88 views

Camera not strafing (GLSL)

I use this code in my GLSL vertex shader, where v_position is the vertex position: gl_Position = v_position * u_camera; and set u_camera as follows: meshShader.setUniformMatrix("u_camera", ...
0
votes
1answer
52 views

How do I pass textures into a fragment shader in Slick?

I've written a shader that uses three different textures, tex0, tex1, and tex2. I can load it into Slick and successfully display it, but I can't figure out how to set the three different textures. ...
0
votes
2answers
78 views

LWJGL Game crashes on some other machines [closed]

I just tried running my game on a friend's laptop, but for some reason it crashes. The exported .jar runs fine on my machine, and some others too. I can see that is has something to do with the ...
3
votes
1answer
62 views

LWJGL Eclipse Resource Deployment

I'm still experimenting with some OpenGL in LWJGL, and as I get to know more and more about OpenGL, I start to do more complicated things like multi texturing, shadowmapping and more. Now, right now ...
3
votes
1answer
113 views

Cut a translucent square in a texture

How to remove (cut-out) a transparent rectangle in a Texture, so that the hole will be translucent. On Android I would use the Xfermodes approach: ...
5
votes
1answer
505 views

OpenGL: Resizing Display and glOrtho/glViewport

I have researched this question from several sources and have yet to find a firm answer saying that "yes that is correct thinking" or "no, here is how it's done." I am trying to ensure resolution ...
1
vote
2answers
200 views

Render rotated rectangle inside other rectangle bounds using Libgdx

I have this code to generate a red rectangle inside a grey rectangle: new Rectangle(grey_rectangle_position_x, Game.SCREEN_HEIGHT/2-Rectangle.height/2,0); This code makes the following: Now, I ...
1
vote
2answers
105 views

LWJGL MouseY Coordinates are flipped

So I'm very new to using OpenGL and LWJGL, although I am proficient in Java itself. One of the first things I read in the documentation of the Display class was that it maps the origin to the bottom ...
0
votes
1answer
84 views

Can I use multiple OpenGL version together

I want to use GLSL but keep my current OpenGL 1.1 setup. The thing is that can I use OpenGL 2.0 shaders on OpenGL 1.1 renders?
0
votes
0answers
77 views

LWJGL not working, need help [closed]

I'm trying to make a simple game in LWJGL but no matter what I do I just get a black screen and it becomes unresponsive. Here is the code that opens the window: package src; import ...
-3
votes
1answer
55 views

C++ Loading DLL Error [closed]

So I'm attempting to fix a OpenGL in Java problem by making a DLL in C++ and then call it from Java but I've ran into an issue. So I'm testing a basic DLL in C++ and I got this error: "error: ...
0
votes
5answers
311 views

Does Java support OpenGL by itself?

Note: This is long but I explaining everything that you need to know. Don't read half way through it and say "What's the question?". It's simple but long and I need help as soon as possible. So I ...
1
vote
1answer
167 views

Can I mix OpenGL and swing?

I'm working on a small game library for me and some people I know that just handles the window and nothing special that we weren't gonna use. I know how to use OpenGL and stuff I just don't like ...
0
votes
0answers
76 views

gluLookat with LWJGL problems

I am very new to any sort of 3D programming and a lot of the resources either don't explain what each function or command is doing, or assume you have all of the knowledge already. I've looked at a ...
0
votes
1answer
157 views

Changing Yaw, Pitch And Roll OpenGL

I'm using LWJGL and OpenGL 1.1 at this time and I was wondering what command is used to change the yaw, pitch and roll?
0
votes
0answers
132 views

LWJGL Mouse Input [closed]

I have this mouse function in my LWJGL program: public void mouseInput(){ int mouseX = Mouse.getX(); int mouseY = 600 - Mouse.getY(); int mouseDX = 0, mouseDY = 0; int lastX = 0, ...
0
votes
2answers
159 views

Cant import Sun openGL

I've been working with JOGL and I've ran into a problem. The problem is when I try to import import com.sun.opengl.*; on Eclipse, Eclipse doesn't recognize it. Does anyone know where this library is? ...
0
votes
1answer
210 views

OpenGL first person camera orientation issues [closed]

I have a "camera" in my opengl program that I recently finished. However, I've noticed that whenever I rotate and then move again, the x, y, and z angles change. For example, when I press the "w" key, ...
-1
votes
1answer
96 views

OpenGL glMatrixMode rotation

I'm stuck on trying to figure out how to rotate the viewport(or camera). So far I've figured out I need to use the function glRotatef and glMatrixMode(GL_MODELVIEW). But I have no idea how to apply ...
2
votes
2answers
441 views

Move Camera Freely Around Object While Looking at It

I've got a 3D model loaded (a planet) and I have a camera that I want to allow the user to move freely around it. I have no problem getting the camera to orbit the planet around either the x or y ...
2
votes
1answer
114 views

OpenGL and Java user interface architecture/comunication [closed]

I'm working on the UIs for a turn based tactical rpg made with Java and LWJGL. I'd like to make a set of "dynamic" UIs similar to those of the game Torchlight 2. I would like to know if there are any ...
1
vote
1answer
591 views

LWJGL - Mixing 2D and 3D

I'm trying to mix 2D and 3D using LWJGL. I have wrote 2D little method that allow me to easily switch between 2D and 3D. protected static void make2D() { glEnable(GL_BLEND); ...
1
vote
3answers
90 views

Translating an Object to a certain Vector 3 in OpenGL and Java LWJGL

So after almost two hours, I got the hang of using glTranslated() (with Java and LWJGL). If I am correct, applying glTranslated on an object moves that object with the x,y,z relative to the previously ...
0
votes
0answers
39 views

Nifty default controls prevent the rest of my game from rendering

I've been trying to add a basic HUD to my 2D LWJGL game using nifty gui, and while I've been successful in rendering panels and static text on top of the game, using the built-in nifty controls (e.g. ...
1
vote
1answer
87 views

How do I draw a scene with 2 nested frames

I have been trying for long time to figure out this: I have loaded a model from a directx file (I am using opengl and Java) the model have a hierarchical system of nested reference frames (there are ...
0
votes
0answers
63 views

HowTo Enable jBullet DebugMode

I would like to render the physics world of jBullet to debug some issues in my game, and I am not finding too much on enabling the debugDraw method of jBullet. Do I need to write my own debugDraw ...
3
votes
1answer
197 views

How can I set the rotation of a shape to the same as my image?

The way you set rotations of images is different from setting shape rotations. So how can I make the shape have the same rotation as my image? This is how my image rotates: ...
0
votes
1answer
368 views

How can I achieve this lighting with OpenGL?

I'm currently trying to implement a type of "smooth" lighting. How can I achieve lighting which looks like this: http://dl.dropbox.com/u/1668516/concept/warp3.png Using OpenGl. I've attempted to use ...
4
votes
2answers
383 views

Sprite batching in OpenGL

I've got a JAVA based game with an OpenGL rendering front that is drawing a large amount of sprites every frame (during testing it peaked at 700). Now this game is completely unoptimized. There is no ...
2
votes
1answer
105 views

Uniform not being applied to proper mesh [closed]

Ok, I got some code, and you select blocks on a grid. The selection works. I can modify the blocks to be raised when selected and the correct one shows. I set a color which I use in the shader. ...
2
votes
3answers
316 views

OpenGL Get Rotated X and Y of quad

I am developing a game in 2D using LWJGL library. So far I have a rotating box. I have done basic Rectangle collision, but it doesn't work for rotated rectangles. Does OpenGL have a function that ...
2
votes
2answers
378 views

Checking if an object is inside bounds of an isometric chunk

How would I check if an object is inside the bounds of an isometric chunk? for example I have a player and I want to check if its inside the bounds of this isometric chunk. I draw the isometric ...
1
vote
1answer
224 views

Edge flicker when moving Camera (2D)

I have a Orthographic camera. I have a fixed landscape texture and a texture for a moveable object. If the object moves to the right the camera will also move with the object. When I also draw an ...
2
votes
3answers
325 views

How can I create a spritesheet animation with big images?

If I have a 200x200 pixel sprite, and I want to create an animation for it with 30 different frames, how can I accomplish that? I can't put them on one texture/spritesheet.
3
votes
2answers
896 views

OpenGL Lighting [duplicate]

I have a simple day and night cycle by at day disabling OpenGL lighting and at night enabling openGL Lighting. When I enable everything appears darker. My question is How would I make it that at a ...
0
votes
0answers
192 views

Implementing Lighting OpenGL 2D Quads with Textures

Lets say I have a grid of tiles 64x64 and I want to implement lighting using opengl. I draw the grid with 2D quads that are binded with textures. How would I implement source lighting and stuff like ...
1
vote
2answers
417 views

LWJGL GL_QUADS texture artifact

I managed to get working LWJGL in Java, and I loaded a test image (tv test card), but I keep getting weird artifacts outside the image. Code: glBegin(GL_QUADS); glTexCoord2f(0, 0); glVertex2i(10, ...
4
votes
1answer
998 views

Access vertex data stored in VBO in the shader

If I wanted to store extra data in a VBO for skinning (indices for indexing into an array of matrices of bones and floats for applying weights to those bones) How would I go about accessing that data ...
3
votes
2answers
400 views

Disadvantages of using multiple versions of OpenGL in LWJGL?

So, I'm trying to figure out LWJGL, and my goal is to use OpenGL 3.2 (because pretty shaders are pretty). But in every tutorial I can find for LWJGL, they import a bunch of different OpenGL versions ...
0
votes
2answers
1k views

I have created character human in blender. How to use it in Java/Android

Title says it all pretty much. I can't find anything online which explains it in details. I have created a character model in Blender and I want to use it in Android app. I want to make it move. ...

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