TextureCalculator.java

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 * Copyright (c) 2015
 *
 * 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,
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 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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package go.graphics.swing.opengl;

import com.jogamp.opengl.GL2;

public final class TextureCalculator {
	private TextureCalculator() {

	}

	/**
	 * Makes the size a power of two, if needed.
	 * 
	 * @param gl
	 *            The gl context
	 * @param width
	 *            THe old size
	 * @return The good size.
	 */
	public static int supportedTextureSize(GL2 gl, int width) {
		if (gl.isExtensionAvailable("GL_ARB_texture_non_power_of_two")) {
			return width;
		} else {
			int real = 1;
			while (real < width) {
				real *= 2;
			}
			return real;
		}
	}
}