01: /*
02: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
04: *
05: * This program is free software; you can redistribute it and/or
06: * modify it under the terms of the GNU General Public License version
07: * 2 only, as published by the Free Software Foundation.
08: *
09: * This program is distributed in the hope that it will be useful, but
10: * WITHOUT ANY WARRANTY; without even the implied warranty of
11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12: * General Public License version 2 for more details (a copy is
13: * included at /legal/license.txt).
14: *
15: * You should have received a copy of the GNU General Public License
16: * version 2 along with this work; if not, write to the Free Software
17: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18: * 02110-1301 USA
19: *
20: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
21: * Clara, CA 95054 or visit www.sun.com if you need additional
22: * information or have any questions.
23: */
24:
25: package javax.microedition.khronos.egl;
26:
27: import javax.microedition.khronos.opengles.*;
28:
29: /**
30: * A class encapsulating the EGL context. The class also contains
31: * static methods used to obtain instances of the <code>EGL</code>
32: * and <code>GL</code> interfaces.
33: *
34: * <p> An <code>EGLContext</code> is obtained from EGL using the
35: * <code>eglCreateContext</code> function, and destroyed using the
36: * <code>eglDestroyContext</code> function. Its main role is as a
37: * parameter to <code>eglMakeCurrent</code>.
38: */
39: public abstract class EGLContext {
40:
41: EGLContext() {
42: }
43:
44: /**
45: * Returns an <code>EGL</code> object.
46: *
47: * @return an <code>EGL</code> instance.
48: */
49: public static synchronized EGL getEGL() {
50: return EGL10Impl.getInstance();
51: }
52:
53: /**
54: * Returns a <code>GL</code> object associated with this EGL
55: * context.
56: *
57: * <p>To call extension methods, cast the returned object to the
58: * interface type that contains the methods of the extension.
59: *
60: * @return a <code>GL</code> instance that implements all
61: * available extension interfaces.
62: */
63: public abstract GL getGL();
64: }
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