LWJGL Textures par Rafa34 - page 1

Bonjour, je suis en train de coder un jeu avec des cubes(un peu comme minecraft) et j'aimerais rajouter des textures à mes blocs. Mais j'ai un problème, j'utilise des VBOs, il y a un vbo par Chunk contenant l'entièreté des données nécessaires pour chaque cube du Chunk(position, normales, texture coordinates) mais chaque blocs a une texture différentes. Alors comment faire pour dire à LWJGL de changer de texture pour chaque cube ?

Je ne sais pas si j'ai été clair, demandez moi si vous avez besoin de plus de précisions.

Merci d'avance pour votre aide.

EDIT:

C bon j'ai réussi à faire ce que je voulais, voici le code pour ceux qui sont dans le même problème que moi:

public Main(){
		blockAtlas = new TextureAtlas(Arrays.asList("grass.png","stone.png","water.png"), "res/textures/blocks/", "atlasBlock", 1024);
		Block.loadTexture();	
	}

public class TextureAtlas {

	public HashMap<String, Vector2f> textures = new HashMap<>();
	public String fileName;
	
	public float textureSize;
	
	public TextureAtlas(List<String> textures, String path, String fileName, int textureSize){
		
		try{
			
			this.fileName = fileName;
			
			int size = (int) Math.sqrt(textures.size()) +1;
			
			this.textureSize = 1f/(float)size;
			
			List<BufferedImage> images = new ArrayList<BufferedImage>();
			
			for(String texture : textures){
				BufferedImage buffer = ImageIO.read(new File(path+""+texture));
				images.add(buffer);
				
				this.textures.put(texture, new Vector2f((float)(textures.indexOf(texture) % size)/(float)size,(float)(textures.indexOf(texture)/size)/(float)size));
			}

			BufferedImage atlas = new BufferedImage(size*textureSize,size*textureSize, BufferedImage.TYPE_INT_ARGB);
			
			Graphics g = atlas.getGraphics();
			
			for(BufferedImage img : images){
				g.drawImage(img, (int)((float)(images.indexOf(img)%size) * (float)textureSize), (int)(images.indexOf(img)/size * (float)textureSize), null);
			}
			
			ImageIO.write(atlas, "PNG", new File(path+""+fileName+".png"));
			
		}catch(Exception e){
			e.printStackTrace();
		}
		
		
	}
	
}

package fr.terraingeneration.blocks;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import org.lwjgl.util.vector.Vector2f;
import org.lwjgl.util.vector.Vector3f;
import org.newdawn.slick.opengl.Texture;
import org.newdawn.slick.opengl.TextureLoader;

import fr.terraingeneration.Color4f;
import fr.terraingeneration.main.Main;

public class Block {

	private Color4f color;
	public Vector3f pos;
	public static int textureID;
	
	private String textureName;
	
	private Vector2f atlasTextureCoords;
	
	public Block(Vector3f pos, Color4f color, String textureName){
		this.color = color;
		this.pos  = pos;
		this.textureName = textureName;
		atlasTextureCoords = texCoords;
		tSize = Main.blockAtlas.textureSize;
		texCoords = Main.blockAtlas.textures.get(textureName+".png");
	}
	
	public static void loadTexture(){
		
		Texture texture = null;
		try {
			texture = TextureLoader.getTexture("PNG", new FileInputStream("res/textures/blocks/"+Main.blockAtlas.fileName+".png"));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
		int textureID = texture.getTextureID();
		Block.textureID = textureID;
		
	}
	
	private float tSize;
	private Vector2f texCoords;
	
	public float[] backData(){
		float x = pos.x;
		float y = pos.y;
		float z = pos.z;
		
		float s = 1;
		
		return new float[]{
				x, y, z,		color.r, color.g, color.b, color.a, 0,0,-1, 0.5f*tSize + texCoords.x,1f*tSize + texCoords.y,
				x+s, y, z,		color.r, color.g, color.b, color.a, 0,0,-1, 1f*tSize + texCoords.x,1f*tSize + texCoords.y,
				x+s, y+s, z,	color.r, color.g, color.b, color.a, 0,0,-1, 1f*tSize + texCoords.x,0.5f*tSize + texCoords.y,
				x, y+s, z,		color.r, color.g, color.b, color.a, 0,0,-1, 0.5f*tSize + texCoords.x,0.5f*tSize + texCoords.y,
		};
	}
	
	public float[] frontData(){
		float x = pos.x;
		float y = pos.y;
		float z = pos.z;
		
		float s = 1;
		
		return new float[]{
				x+s, y, z+s,		color.r, color.g, color.b, color.a, 0,0,1, 0.5f*tSize + texCoords.x,1f*tSize + texCoords.y,
				x, y, z+s,			color.r, color.g, color.b, color.a, 0,0,1, 1f*tSize + texCoords.x,1f*tSize + texCoords.y,
				x, y+s, z+s,		color.r, color.g, color.b, color.a, 0,0,1, 1f*tSize + texCoords.x,0.5f*tSize + texCoords.y,
				x+s, y+s, z+s,		color.r, color.g, color.b, color.a, 0,0,1, 0.5f*tSize + texCoords.x,0.5f*tSize + texCoords.y,
		};
	}
	
	public float[] rightData(){
		float x = pos.x;
		float y = pos.y;
		float z = pos.z;
		
		float s = 1;
		
		return new float[]{
				x+s, y, z,		color.r, color.g, color.b, color.a, 1,0,0, 0f*tSize + texCoords.x,1f*tSize + texCoords.y,
				x+s, y, z+s,		color.r, color.g, color.b, color.a, 1,0,0, 1f*tSize + texCoords.x,1f*tSize + texCoords.y,
				x+s, y+s, z+s,	color.r, color.g, color.b, color.a, 1,0,0, 1f*tSize + texCoords.x,0.5f*tSize + texCoords.y,
				x+s, y+s, z,		color.r, color.g, color.b, color.a, 1,0,0, 0f*tSize + texCoords.x,0.5f*tSize + texCoords.y,
		};
	}
	
	public float[] leftData(){
		float x = pos.x;
		float y = pos.y;
		float z = pos.z;
		
		float s = 1;
		
		return new float[]{
				x, y, z+s,		color.r, color.g, color.b, color.a, -1,0,0, 0f*tSize + texCoords.x,1f*tSize + texCoords.y,
				x, y, z,		color.r, color.g, color.b, color.a, -1,0,0, 1f*tSize + texCoords.x,1f*tSize + texCoords.y,
				x, y+s, z,	color.r, color.g, color.b, color.a, -1,0,0,     1f*tSize + texCoords.x,0.5f*tSize + texCoords.y,
				x, y+s, z+s,	color.r, color.g, color.b, color.a, -1,0,0, 0f*tSize + texCoords.x,0.5f*tSize + texCoords.y
		};
	}
	
	public float[] upData(){
		float x = pos.x;
		float y = pos.y;
		float z = pos.z;
		
		float s = 1;
		
		return new float[]{
				x, y+s, z,		color.r * 1f, color.g * 1f, color.b * 1f, color.a, 0,1,0,     0f*tSize + texCoords.x,0f*tSize + texCoords.y,
				x+s, y+s, z,		color.r * 1f, color.g * 1f, color.b * 1f, color.a, 0,1,0, 0.5f*tSize + texCoords.x,0f*tSize + texCoords.y,
				x+s, y+s, z+s,	color.r * 1f, color.g * 1f, color.b * 1f, color.a, 0,1,0,     0.5f*tSize + texCoords.x,0.5f*tSize + texCoords.y,
				x, y+s, z+s,		color.r * 1f, color.g * 1f, color.b * 1f, color.a, 0,1,0, 0f*tSize + texCoords.x,0.5f*tSize + texCoords.y
		};
	}
	
	public float[] downData(){
		float x = pos.x;
		float y = pos.y;
		float z = pos.z;
		
		float s = 1;
		
		return new float[]{
				x+s, y, z,		color.r, color.g, color.b, color.a, 0,-1,0,     0f*tSize + texCoords.x,0*tSize + texCoords.y,
				x, y, z,		color.r, color.g, color.b, color.a, 0,-1,0,		0.5f*tSize + texCoords.x,0f*tSize + texCoords.y,
				x, y, z+s,	color.r, color.g, color.b, color.a, 0,-1,0,         0.5f*tSize + texCoords.x,0.5f*tSize + texCoords.y,
				x+s, y, z+s,		color.r, color.g, color.b, color.a, 0,-1,0, 0f*tSize + texCoords.x,0.5f*tSize + texCoords.y
		};
	}
	
}

-
Edité par Rafa34 18 juillet 2019 à 0:44:54

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