BufferStrategyExceptionTest.java revision 14851:980da45565c8 
1/*
2 * Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * @test
26 * @key headful
27 * @bug 6366813 6459844
28 * @summary Tests that no exception is thrown if a frame is resized just
29 * before we create a bufferStrategy
30 * @author Dmitri.Trembovetski area=FullScreen/BufferStrategy
31 * @run main/othervm -Dsun.java2d.opengl=true BufferStrategyExceptionTest
32 * @run main/othervm BufferStrategyExceptionTest
33 */
34
35import java.awt.AWTException;
36import java.awt.BufferCapabilities;
37import java.awt.Color;
38import java.awt.Dimension;
39import java.awt.Frame;
40import java.awt.Graphics;
41import java.awt.GraphicsConfiguration;
42import java.awt.GraphicsDevice;
43import java.awt.GraphicsEnvironment;
44import java.awt.ImageCapabilities;
45import java.awt.image.BufferStrategy;
46import java.awt.image.BufferedImage;
47
48/**
49 * The purpose of this test is to make sure that we do not throw an
50 * IllegalStateException during the creation of BufferStrategy if
51 * a window has been resized just before our creation attempt.
52 *
53 * We test both windowed and fullscreen mode, although the exception has
54 * been observed in full screen mode only.
55 */
56public class BufferStrategyExceptionTest {
57    private static final int TEST_REPS = 20;
58
59    public static void main(String[] args) {
60        GraphicsDevice gd =
61            GraphicsEnvironment.getLocalGraphicsEnvironment().
62                getDefaultScreenDevice();
63
64        for (int i = 0; i < TEST_REPS; i++) {
65            TestFrame f = new TestFrame();
66            f.pack();
67            f.setSize(400, 400);
68            f.setVisible(true);
69            if (i % 2 == 0) {
70                gd.setFullScreenWindow(f);
71            }
72            // generate a resize event which will invalidate the peer's
73            // surface data and hopefully cause an exception during
74            // BufferStrategy creation in TestFrame.render()
75            Dimension d = f.getSize();
76            d.width -= 5; d.height -= 5;
77            f.setSize(d);
78
79            f.render();
80            gd.setFullScreenWindow(null);
81            sleep(100);
82            f.dispose();
83        }
84        System.out.println("Test passed.");
85    }
86
87    private static void sleep(long msecs) {
88        try {
89            Thread.sleep(msecs);
90        } catch (InterruptedException ex) {
91            ex.printStackTrace();
92        }
93    }
94
95    private static final BufferedImage bi =
96        new BufferedImage(200, 200, BufferedImage.TYPE_INT_RGB);
97
98    static class TestFrame extends Frame {
99        TestFrame() {
100            setUndecorated(true);
101            setIgnoreRepaint(true);
102            setSize(400, 400);
103        }
104
105        public void render() {
106            ImageCapabilities imgBackBufCap = new ImageCapabilities(true);
107            ImageCapabilities imgFrontBufCap = new ImageCapabilities(true);
108            BufferCapabilities bufCap =
109                new BufferCapabilities(imgFrontBufCap,
110                    imgBackBufCap, BufferCapabilities.FlipContents.COPIED);
111            try {
112
113                createBufferStrategy(2, bufCap);
114            } catch (AWTException ex) {
115                createBufferStrategy(2);
116            }
117
118            BufferStrategy bs = getBufferStrategy();
119            do {
120                Graphics g =  bs.getDrawGraphics();
121                g.setColor(Color.green);
122                g.fillRect(0, 0, getWidth(), getHeight());
123
124                g.setColor(Color.red);
125                g.drawString("Rendering test", 20, 20);
126
127                g.drawImage(bi, 50, 50, null);
128
129                g.dispose();
130                bs.show();
131            } while (bs.contentsLost()||bs.contentsRestored());
132        }
133    }
134
135}
136