com.dbi.games.fortress.engine.graphics.TextureManager.java Source code

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Here is the source code for com.dbi.games.fortress.engine.graphics.TextureManager.java

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package com.dbi.games.fortress.engine.graphics;

import java.awt.color.ColorSpace;
import java.awt.image.ColorModel;
import java.awt.image.ComponentColorModel;
import java.awt.image.DataBuffer;
import java.io.IOException;
import java.nio.IntBuffer;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.lwjgl.BufferUtils;
import org.lwjgl.opengl.GL11;
import org.newdawn.slick.opengl.Texture;
import org.newdawn.slick.opengl.TextureLoader;

/**
 *
 * @author Falken
 */
public class TextureManager {
    private ColorModel alphaColorModel;
    private ColorModel colorModel;
    private IntBuffer textureIDBuffer = BufferUtils.createIntBuffer(1);
    private static final List<Integer> powersOfTwo = Arrays.asList(2, 4, 8, 16, 32, 64, 128, 256, 512, 1024);
    private Map<String, Texture> textureIndex = new HashMap<String, Texture>();

    public TextureManager() {
        alphaColorModel = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB),
                new int[] { 8, 8, 8, 8 }, true, false, ComponentColorModel.TRANSLUCENT, DataBuffer.TYPE_BYTE);
        colorModel = new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB), new int[] { 8, 8, 8, 0 },
                false, false, ComponentColorModel.OPAQUE, DataBuffer.TYPE_BYTE);
    }

    public int newTextureID() {
        GL11.glGenTextures(textureIDBuffer);
        return textureIDBuffer.get(0);
    }

    public Texture getTexture(String textureResource) {
        if (textureIndex.containsKey(textureResource)) {
            return textureIndex.get(textureResource);
        }

        Texture tex;
        try {
            tex = TextureLoader.getTexture("PNG", getClass().getClassLoader().getResourceAsStream(textureResource));
        } catch (Exception ex) {
            Logger.getLogger(getClass().getName()).log(Level.SEVERE,
                    "Failed to load texture correctly: " + textureResource, ex);
            return null;
        }

        textureIndex.put(textureResource, tex);
        return tex;
    }

}