Texture problem

[Doryan Bessiere]

Hello, i have a problem with LWJGL 3. i have followed this tutorial for creating my game 2D (https://www.youtube.com/watch?v=crOzRjzqI-o) but i have created a texture class and i use this class and I have a problem when I try of the used that takes out to me the error below

Bonjour, j'ai un problème avec LWJGL 3. J'ai suivis ce tutoriel pour créer mon jeu 2D (https://www.youtube.com/watch?v=crOzRjzqI-o) mais j'ai créer une classe texture et j'utilise cette classe et j'ai un problème quand j'essaie de l'utiliser elle m'écrit dans la console l'erreur ci-dessous

package doryan_bessiere.pong.com;

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.nio.ByteBuffer;

import javax.imageio.ImageIO;

import static org.lwjgl.opengl.GL11.*;

import org.lwjgl.BufferUtils;

public class Texture {

	protected int id;
	protected int width, height;

	public Texture(String fileName) {
		try {
			BufferedImage bImage = ImageIO.read(getClass().getResourceAsStream("/images/" + fileName + ".png"));
			this.width = bImage.getWidth();
			this.height = bImage.getHeight();

			int[] pixels_raw = new int[width * height * 4];
			pixels_raw = bImage.getRGB(0, 0, this.width, this.height, null, 0, this.width);

			ByteBuffer pixels = BufferUtils.createByteBuffer(this.width * this.height * 4);

			for (int j = 0; j < this.height; j++) {
				for (int i = 0; i < this.width; i++) {
					int pixel = pixels_raw[i * this.width + j];
					pixels.put((byte) ((pixel >> 16) & 0xFF)); //RED
					pixels.put((byte) ((pixel >> 8) & 0xFF)); //GREEN
					pixels.put((byte) ((pixel) & 0xFF)); // BLUE
					pixels.put((byte) ((pixel >> 24) & 0xFF)); // ALPHA
				}
			}
			pixels.flip();
			
			this.id = glGenTextures();
			
			glBindTexture(GL_TEXTURE_2D, id);
			glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
			glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
			
			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
		} catch (IOException e) {
			e.printStackTrace();
			System.err.println(fileName + " texture not found !");
		}
	}
	
	public void bind() {
		glBindTexture(GL_TEXTURE_2D, id);
	}
	
	public void unbind() {
		glBindTexture(GL_TEXTURE_2D, 0);
	}
}

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ff843d0f46d, pid=7244, tid=0x0000000000001a30
#
# JRE version: Java(TM) SE Runtime Environment (8.0_171-b11) (build 1.8.0_171-b11)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.171-b11 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C  [lwjgl_opengl.dll+0xf46d]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\Users\Bessiere\eclipse-workspace\DoryanBessiere\[LWJGL 3] Pong\hs_err_pid7244.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

[Andrew Alfazy]

You didn't post the crash report can you post it.
I mean this file "C:\Users\Bessiere\eclipse-workspace\DoryanBessiere\[LWJGL 3] Pong\hs_err_pid7244.log".

[Doryan Bessiere]

https://pastebin.com/2nNCwerh

[Andrew Alfazy]

WOW you are reminding me of myself before 2 years!
I guess your problem is that you called opengl command before initialization.
so you must set Texture value after (this codes)

glfwMakeContextCurrent(window);
GL.createCapabilities();

You can read this https://www.khronos.org/opengl/wiki/Common_Mistakes#The_Object_Oriented_Language_Problem to know more.
if you didn't solve your problem can you post your main class code

[Doryan Bessiere]

package doryan_bessiere.pong.com;

import static org.lwjgl.glfw.GLFW.*;
import static org.lwjgl.opengl.GL11.*;
import org.lwjgl.glfw.GLFWVidMode;
import org.lwjgl.opengl.GL;

public abstract class Window {

	protected String title;
	protected int width, height;
	protected boolean resizable;
	
	protected long window;

	public Window(String title, int width, int height, boolean resizable) {
		this.title = title;
		this.width = width;
		this.height = height;
		this.resizable = resizable;
	}
	
	public void show() {
		if(!glfwInit()) {
			throw new IllegalStateException("Failed to initialize GLFW!");
		}

		glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
		this.window = glfwCreateWindow(this.width, this.height, this.title, 0,0);
		if(this.window == 0) {
			throw new IllegalStateException("Failed to create window !");
		}
		
		GLFWVidMode videoMode = glfwGetVideoMode(glfwGetPrimaryMonitor());
		glfwSetWindowPos(this.window, (videoMode.width() - this.width) / 2, (videoMode.height() - this.height) / 2);
		glfwShowWindow(this.window);
		
		glfwMakeContextCurrent(window);
		
		GL.createCapabilities();
		
		while(!glfwWindowShouldClose(this.window)) {
			glfwPollEvents();
			
			glClear(GL_COLOR_BUFFER_BIT);
			render();
			glfwSwapBuffers(window);
		}
		glfwTerminate();
	}
	
	public boolean getKey(int key) {
		return glfwGetKey(this.width, key) == GLFW_TRUE;
	}
	
	public boolean getMouse(int button) {
		return glfwGetMouseButton(this.width, button) == GLFW_TRUE;
	}
	
	public void close() {
		glfwSetWindowShouldClose(window, true);
	}
	
	public abstract void render();
}

[Andrew Alfazy]

please and the code where you do

@override
public void render(){
//some codes....
}

[Doryan Bessiere]

package doryan_bessiere.pong.com;

import static org.lwjgl.opengl.GL11.*;

public class Starter {

	public static void main(String[] args) {
		new Window("[LWJGL 3] Pong", 640, 480, true) {
			
			Texture texture = new Texture("head");
			@Override
			public void render() {
				texture.bind();
				glBegin(GL_QUADS);
					glTexCoord2f(0,0);
					glVertex2f(-0.5f, 0.5f);

					glTexCoord2f(0,1);
					glVertex2f(0.5f, 0.5f);

					glTexCoord2f(1,1);
					glVertex2f(0.5f, -0.5f);

					glTexCoord2f(1,0);
					glVertex2f(-0.5f, -0.5f);
				glEnd();
			}
		}.show();
	}
}

[Andrew Alfazy]

your problem is in this code PLACE

Texture texture = new Texture("head");

to solve it make it you can make an other abstract method at your Window class and call it once before

while(!glfwWindowShouldClose(this.window)) {

and after

GL.createCapabilities();

and make your

Texture

object at

Starter

class not on

new Window("[LWJGL 3] Pong", 640, 480, true) {
	Texture texture = new Texture("head");
	//some code
}

and give it a value in the new abstract method at Window
your final code will look like this

package doryan_bessiere.pong.com;

import static org.lwjgl.glfw.GLFW.*;
import static org.lwjgl.opengl.GL11.*;
import org.lwjgl.glfw.GLFWVidMode;
import org.lwjgl.opengl.GL;

public abstract class Window {

	protected String title;
	protected int width, height;
	protected boolean resizable;
	
	protected long window;

	public Window(String title, int width, int height, boolean resizable) {
		this.title = title;
		this.width = width;
		this.height = height;
		this.resizable = resizable;
	}
	
	public void show() {
		if(!glfwInit()) {
			throw new IllegalStateException("Failed to initialize GLFW!");
		}

		glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
		this.window = glfwCreateWindow(this.width, this.height, this.title, 0,0);
		if(this.window == 0) {
			throw new IllegalStateException("Failed to create window !");
		}
		
		GLFWVidMode videoMode = glfwGetVideoMode(glfwGetPrimaryMonitor());
		glfwSetWindowPos(this.window, (videoMode.width() - this.width) / 2, (videoMode.height() - this.height) / 2);
		glfwShowWindow(this.window);
		
		glfwMakeContextCurrent(window);
		
		GL.createCapabilities();
		init();
			while(!glfwWindowShouldClose(this.window)) {
			glfwPollEvents();
			
			glClear(GL_COLOR_BUFFER_BIT);
			render();
			glfwSwapBuffers(window);
		}
		glfwTerminate();
	}
	
	public boolean getKey(int key) {
		return glfwGetKey(this.width, key) == GLFW_TRUE;
	}
	
	public boolean getMouse(int button) {
		return glfwGetMouseButton(this.width, button) == GLFW_TRUE;
	}
	
	public void close() {
		glfwSetWindowShouldClose(window, true);
	}
	
	public abstract void render();
	public abstract void init();
}

public class Starter {

	public static Texture texture;

	public static void main(String[] args) {
		new Window("[LWJGL 3] Pong", 640, 480, true) {

			@Override
			public void init(){
				texture = new Texture("head");
			}
			@Override
			public void render() {
				texture.bind();
					glBegin(GL_QUADS);
					glTexCoord2f(0,0);
					glVertex2f(-0.5f, 0.5f);

					glTexCoord2f(0,1);
					glVertex2f(0.5f, 0.5f);

					glTexCoord2f(1,1);
					glVertex2f(0.5f, -0.5f);

					glTexCoord2f(1,0);
					glVertex2f(-0.5f, -0.5f);
					glEnd();
			}
		}.show();
	}
}

and there are to many solutions to fix this it's simple one.
Can you give me an email to connect with you?

[Doryan Bessiere]

it's good solution and my email it's: antox.doryan@gmail.com

[mudlee]

I advise you to use these tutorial first:

• https://legacy.gitbook.com/book/lwjglgamedev/3d-game-development-with-lwjgl/details
• https://learnopengl.com/