import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;

public class OpenExrTextureTest extends JoglApp {

	private int[] textures;
	private GL2 gl;
	
	OpenExrTextureTest(String Name_value, int x, int y) {
		
		super(Name_value, x, y);
	}
	
	public void init(GLAutoDrawable drawable) {
		
		gl = drawable.getGL().getGL2();
		
		//get the texture data
		OpenExrReaderMain exrReader = new OpenExrReaderMain();
		exrReader.readExrFile("C:\\pathToAnOpenExrFile.exr");
		
		OpenExrReaderMain.Texture textureHDR = exrReader.getOpenExrTexture(0, 0, exrReader.getHeight(), exrReader.getWidth(), true, OpenExrReaderMain.RGB_CHANNEL);;
		
		textures = new int[1];		
		
		gl.glEnable(GL2.GL_TEXTURE_2D);
        gl.glGenTextures(1, textures, 0);
        gl.glBindTexture(GL2.GL_TEXTURE_2D, textures[0]);
		
		gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MIN_FILTER, GL2.GL_NEAREST);
		gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MAG_FILTER, GL2.GL_NEAREST);
		gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_WRAP_S, GL2.GL_CLAMP_TO_EDGE);
		gl.glTexParameteri(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_WRAP_T, GL2.GL_CLAMP_TO_EDGE);
		
		gl.glPixelStorei(GL2.GL_UNPACK_ALIGNMENT, 1);

		gl.glTexImage2D(GL2.GL_TEXTURE_2D, 0, GL2.GL_FLOAT_RGBA32_NV, textureHDR.getWidth(), textureHDR.getHeight(), 0, GL2.GL_RGBA, GL2.GL_HALF_FLOAT, textureHDR.getPixels());
		
		super.init(drawable);
    }
	
	public void display(GLAutoDrawable drawable) {
		
		super.display(drawable);
		
		gl = drawable.getGL().getGL2();
		
		int edgeLength = 10;
		Vector3d position = new Vector3d(0.0, 0.0, 0.0);
		
		//front
		gl.glActiveTexture(GL2.GL_TEXTURE0);
		gl.glBindTexture(GL2.GL_TEXTURE_2D, textures[0]);
		
		gl.glBegin(GL2.GL_QUADS);
			gl.glMultiTexCoord2f(GL2.GL_TEXTURE0, 0.0f, 0.0f);
			gl.glVertex3d(-edgeLength + position.x, -edgeLength + position.y, -edgeLength + position.z);
			gl.glMultiTexCoord2f(GL2.GL_TEXTURE0, 1.0f, 0.0f);
			gl.glVertex3d(edgeLength + position.x, -edgeLength + position.y, -edgeLength + position.z);
			gl.glMultiTexCoord2f(GL2.GL_TEXTURE0, 1.0f, 1.0f);
			gl.glVertex3d(edgeLength + position.x, edgeLength + position.y, -edgeLength + position.z);
			gl.glMultiTexCoord2f(GL2.GL_TEXTURE0, 0.0f, 1.0f);
			gl.glVertex3d(-edgeLength + position.x, edgeLength + position.y, -edgeLength + position.z);
		gl.glEnd();
	} 

	public static void main(String[] args) {
		
		new OpenExrTextureTest("OpenExrTextureTest", 800, 600);
	}

}