01: /*
02: * $RCSfile: Win32NativeScreenInfo.java,v $
03: *
04: * Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
06: *
07: * This code is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU General Public License version 2 only, as
09: * published by the Free Software Foundation. Sun designates this
10: * particular file as subject to the "Classpath" exception as provided
11: * by Sun in the LICENSE file that accompanied this code.
12: *
13: * This code is distributed in the hope that it will be useful, but WITHOUT
14: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: * version 2 for more details (a copy is included in the LICENSE file that
17: * accompanied this code).
18: *
19: * You should have received a copy of the GNU General Public License version
20: * 2 along with this work; if not, write to the Free Software Foundation,
21: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
22: *
23: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
24: * CA 95054 USA or visit www.sun.com if you need additional information or
25: * have any questions.
26: *
27: * $Revision: 1.2 $
28: * $Date: 2008/02/28 20:17:57 $
29: * $State: Exp $
30: */
31:
32: package javax.media.j3d;
33:
34: import java.awt.GraphicsDevice;
35: import sun.awt.Win32GraphicsDevice;
36:
37: /**
38: * Native screen info class. A singleton instance of this class is created by
39: * a factory method in the base class using reflection.
40: */
41: class Win32NativeScreenInfo extends NativeScreenInfo {
42: private static final long display = 0; // unused for Win32
43:
44: private static boolean wglARBChecked = false;
45: private static boolean isWglARB;
46:
47: private static native boolean queryWglARB();
48:
49: Win32NativeScreenInfo() {
50: }
51:
52: // This method will return true if wglGetExtensionsStringARB is supported,
53: // else return false
54: static synchronized boolean isWglARB() {
55:
56: if (!wglARBChecked) {
57: // Query for wglGetExtensionsStringARB support.
58: isWglARB = queryWglARB();
59: wglARBChecked = true;
60: }
61: return isWglARB;
62: }
63:
64: @Override
65: long getDisplay() {
66: return display;
67: }
68:
69: @Override
70: int getScreen(GraphicsDevice graphicsDevice) {
71: return ((Win32GraphicsDevice) graphicsDevice).getScreen();
72: }
73:
74: // Ensure that the native libraries are loaded
75: static {
76: VirtualUniverse.loadLibraries();
77: }
78: }
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