Pasted

package destr.jogl.buffer;
 
import java.awt.Graphics2D;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ComponentColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.nio.ByteBuffer;
 
import javax.imageio.ImageIO;
import javax.media.opengl.GL;
import javax.media.opengl.GL2;
 
public class GLTexture implements GLBuffer {
    private int id;
    
    public static GLTexture loadURL(GL gl1, String src) throws IOException {
        URL url = new URL(src);
        URLConnection urlConn = url.openConnection(); 
        urlConn.setDoInput(true); 
        urlConn.setUseCaches(false);
        InputStream in = new DataInputStream(urlConn.getInputStream());
        GLTexture image = new GLTexture(gl1, in);
        in.close();
        return image;
    }
    
    public static GLTexture loadClassPath(GL gl1, String src) throws IOException {
        InputStream in = GLTexture.class.getResourceAsStream(src);
        GLTexture image = new GLTexture(gl1, in);
        in.close();
        return image;
    }
    
    public static ComponentColorModel colorModel=
        new ComponentColorModel (ColorSpace.getInstance(ColorSpace.CS_sRGB),
        new int[] {8,8,8,8},
        true,
        false,
        ComponentColorModel.TRANSLUCENT,
        DataBuffer.TYPE_BYTE
    );
 
    private int width, height;
    
    public GLTexture(GL gl1, InputStream in) throws IOException {
        GL2 gl = gl1.getGL2();
        
        int[] glID = new int[1];
        gl.glGenTextures(1, glID, 0);
        this.id = glID[0];
        
        BufferedImage bufferedImage = ImageIO.read(in);
        
        width = bufferedImage.getWidth();
        height = bufferedImage.getHeight();
        WritableRaster raster = Raster.createInterleavedRaster (DataBuffer.TYPE_BYTE, width, height, 4, null);
        BufferedImage dukeImg = new BufferedImage (colorModel, raster, false, null);
        Graphics2D g = dukeImg.createGraphics();
        g.drawImage(bufferedImage, null, null);
        DataBufferByte dukeBuf = (DataBufferByte)raster.getDataBuffer();
        byte[] dukeRGBA = dukeBuf.getData();
        ByteBuffer bb = ByteBuffer.wrap(dukeRGBA);
        bb.position(0);
        bb.mark();
        gl.glBindTexture(GL.GL_TEXTURE_2D, this.id);
        gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
        gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL2.GL_CLAMP);
        gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL2.GL_CLAMP);
        gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
        gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR);
        gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_TEXTURE_ENV_MODE, GL.GL_REPLACE);
        gl.glTexImage2D (GL.GL_TEXTURE_2D, 0, GL.GL_RGBA, width, height, 0, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, bb);
    }
 
    @Override
    public void bind(GL gl) {
        gl.glEnable(GL.GL_TEXTURE_2D);
        gl.glBindTexture (GL.GL_TEXTURE_2D, this.id);
    }
 
    @Override
    public void free(GL gl) {
        gl.glDeleteTextures(1, new int[]{this.id}, 0);      
    }
 
}