92 lines
2.5 KiB
Java
92 lines
2.5 KiB
Java
/*
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* Copyright (c) 2002-2004 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.opengl;
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import java.nio.IntBuffer;
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import org.lwjgl.BufferUtils;
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/**
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* Simple utility class.
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*
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* @author cix_foo <cix_foo@users.sourceforge.net>
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* @version $Revision$
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*/
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public final class Util {
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private static final IntBuffer int_buffer = BufferUtils.createIntBuffer(16);
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/** No c'tor */
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private Util() {
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}
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public static void checkGLError() {
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int err = GL11.glGetError();
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if ( err != GL11.GL_NO_ERROR ) {
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throw new OpenGLException(err);
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}
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}
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/**
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* Obtain a GL integer value from the driver
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*
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* @param gl_enum The GL value you want
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*
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* @return the integer value
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*/
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public static int glGetInteger(int gl_enum) {
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GL11.glGetInteger(gl_enum, int_buffer);
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return int_buffer.get(0);
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}
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/** Handy mutable integer value class */
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static final class IntValue {
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int value;
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IntValue(int value) {
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this.value = value;
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}
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public boolean equals(Object obj) {
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return ((IntValue)obj).value == value;
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}
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public int hashCode() {
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return value;
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}
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}
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}
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