/* * Copyright (c) 2002-2008 LWJGL Project * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of 'LWJGL' nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package org.lwjgl.opengl; import org.lwjgl.LWJGLException; import org.lwjgl.LWJGLUtil; import org.lwjgl.MemoryUtil; import org.lwjgl.Sys; import java.lang.reflect.Method; import java.nio.ByteBuffer; import java.security.AccessController; import java.security.PrivilegedAction; import java.security.PrivilegedExceptionAction; import java.util.*; import static org.lwjgl.opengl.GL11.*; import static org.lwjgl.opengl.GL30.*; import static org.lwjgl.opengl.GL32.*; /** *
* Manages GL contexts. Before any rendering is done by a LWJGL system, a call should be made to GLContext.useContext() with a * context. This will ensure that GLContext has an accurate reflection of the current context's capabilities and function * pointers. * * This class is thread-safe in the sense that multiple threads can safely call all public methods. The class is also * thread-aware in the sense that it tracks a per-thread current context (including capabilities and function pointers). * That way, multiple threads can have multiple contexts current and render to them concurrently. * * @author elias_naur