com.xrbpowered.gl.res.textures.ArrayTexture.java Source code

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Here is the source code for com.xrbpowered.gl.res.textures.ArrayTexture.java

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/*******************************************************************************
 * MIT License
 *
 * Copyright (c) 2016 Ashur Rafiev
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *******************************************************************************/
package com.xrbpowered.gl.res.textures;

import java.awt.image.BufferedImage;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.IntBuffer;

import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL12;
import org.lwjgl.opengl.GL13;
import org.lwjgl.opengl.GL30;

import com.xrbpowered.gl.Client;
import com.xrbpowered.utils.assets.AssetManager;

public class ArrayTexture {

    private int width, height;
    private int layers;
    private IntBuffer intBuffer;

    protected int texId;

    public ArrayTexture(int w, int h, int layers) {
        this.width = w;
        this.height = h;
        this.layers = layers;

        texId = GL11.glGenTextures();
        GL13.glActiveTexture(GL13.GL_TEXTURE0);
        GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, texId);
        intBuffer = ByteBuffer.allocateDirect(4 * w * h * layers).order(ByteOrder.nativeOrder()).asIntBuffer();
    }

    public ArrayTexture append(String path) {
        try {
            BufferedImage img = AssetManager.defaultAssets.loadImage(path);
            if (img.getWidth() != width || img.getHeight() != height)
                throw new Exception("Texture size mismatch " + path);
            int[] pixels = img.getRGB(0, 0, width, height, null, 0, width);
            intBuffer.put(pixels);
            return this;
        } catch (Exception e) {
            e.printStackTrace();
            System.exit(-1);
            return null;
        }
    }

    public ArrayTexture finish(boolean wrap, boolean filter) {
        intBuffer.flip();
        GL12.glTexImage3D(GL30.GL_TEXTURE_2D_ARRAY, 0, GL11.GL_RGBA, width, height, layers, 0, GL12.GL_BGRA,
                GL12.GL_UNSIGNED_INT_8_8_8_8_REV, intBuffer);
        intBuffer = null;
        Texture.setProperties(GL30.GL_TEXTURE_2D_ARRAY, wrap, filter, Client.settings.anisotropy);
        GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, 0);
        Client.checkError();
        return this;
    }

    public int getWidth() {
        return width;
    }

    public int getHeight() {
        return height;
    }

    public int getLayers() {
        return layers;
    }

    public void bind(int index) {
        GL13.glActiveTexture(GL13.GL_TEXTURE0 + index);
        GL11.glBindTexture(GL30.GL_TEXTURE_2D_ARRAY, texId);
    }

    public void destroy() {
        GL11.glDeleteTextures(texId);
    }

}