1 /*
2 * Copyright (c) 2007, 2008, 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 * @test
25 * @bug 6678218 6681745 6691737
26 * @summary Tests that v-synced BufferStrategies works (if vsync is supported)
27 * @author Dmitri.Trembovetski@sun.com: area=Graphics
28 * @compile -XDignore.symbol.file=true VSyncedBufferStrategyTest.java
29 * @run main/manual/othervm VSyncedBufferStrategyTest
30 * @run main/manual/othervm -Dsun.java2d.opengl=True VSyncedBufferStrategyTest
31 */
32
33 import java.awt.AWTException;
34 import java.awt.BufferCapabilities;
35 import java.awt.BufferCapabilities.FlipContents;
36 import java.awt.Button;
37 import java.awt.Canvas;
38 import java.awt.Color;
39 import java.awt.Dimension;
40 import java.awt.EventQueue;
41 import java.awt.FlowLayout;
42 import java.awt.Font;
43 import java.awt.Frame;
44 import java.awt.Graphics;
45 import java.awt.HeadlessException;
46 import java.awt.ImageCapabilities;
47 import java.awt.Panel;
48 import java.awt.event.ActionEvent;
49 import java.awt.event.ActionListener;
50 import java.awt.event.WindowAdapter;
51 import java.awt.event.WindowEvent;
52 import java.awt.image.BufferStrategy;
53 import java.util.concurrent.CountDownLatch;
54 import javax.swing.JButton;
55 import javax.swing.JFrame;
56 import javax.swing.JPanel;
57 import javax.swing.JScrollPane;
58 import javax.swing.JTextArea;
59
60 public class VSyncedBufferStrategyTest extends Canvas implements Runnable {
61
62 private static final int BLOCK_W = 50;
63 private static final int BLOCK_H = 200;
64
65 BufferStrategy bs;
66 Thread renderThread;
67
68 int blockX = 10;
69 int blockY = 10;
70
71 private volatile boolean done = false;
72 private volatile boolean requestVSync;
73 private boolean currentBSVSynced;
74
75 public VSyncedBufferStrategyTest(boolean requestVSync) {
76 this.requestVSync = requestVSync;
77 this.currentBSVSynced = !requestVSync;
78 renderThread = new Thread(this);
79 renderThread.start();
80 }
81
82 private static final BufferCapabilities defaultBC =
83 new BufferCapabilities(
84 new ImageCapabilities(true),
85 new ImageCapabilities(true),
86 null);
87
88 private void createBS(boolean requestVSync) {
89 if (bs != null && requestVSync == currentBSVSynced) {
90 return;
91 }
92
93 BufferCapabilities bc = defaultBC;
94 if (requestVSync) {
95 bc = new sun.java2d.pipe.hw.ExtendedBufferCapabilities(
96 new ImageCapabilities(true),
97 new ImageCapabilities(true),
98 FlipContents.COPIED,
99 sun.java2d.pipe.hw.ExtendedBufferCapabilities.VSyncType.VSYNC_ON);
100 }
101 try {
102 createBufferStrategy(2, bc);
103 } catch (AWTException e) {
104 System.err.println("Warning: cap is not supported: "+bc);
105 e.printStackTrace();
106 createBufferStrategy(2);
107 }
108 currentBSVSynced = requestVSync;
109 bs = getBufferStrategy();
110 String s =
111 getParent() instanceof Frame ?
112 ((Frame)getParent()).getTitle() : "parent";
113 System.out.println("Created BS for \"" + s + "\" frame, bs="+bs);
114 }
115
116 @Override
117 public void paint(Graphics g) {
118 }
119 @Override
120 public void update(Graphics g) {
121 }
122
123 @Override
124 public void run() {
125 while (!isShowing()) {
126 try { Thread.sleep(5); } catch (InterruptedException e) {}
127 }
128 try { Thread.sleep(2000); } catch (InterruptedException e) {}
129
130 try {
131 while (!done && isShowing()) {
132 createBS(requestVSync);
133 do {
134 step();
135 Graphics g = bs.getDrawGraphics();
136 render(g);
137 if (!bs.contentsRestored()) {
138 bs.show();
139 }
140 } while (bs.contentsLost());
141 Thread.yield();
142 }
143 } catch (Throwable e) {
144 // since we're not bothering with proper synchronization, exceptions
145 // may be thrown when the frame is closed
146 if (isShowing()) {
147 throw new RuntimeException(e);
148 }
149 }
150 }
151
152 int inc = 5;
153 private void step() {
154 blockX += inc;
155 if (blockX > getWidth() - BLOCK_W - 10) {
156 inc = -inc;
157 blockX += inc;
158 }
159 if (blockX < 10) {
160 inc = -inc;
161 blockX += inc;
162 }
163 }
164
165 private void render(Graphics g) {
166 g.setColor(Color.white);
167 g.fillRect(0, 0, getWidth(), getHeight());
168
169 g.setColor(Color.black);
170 g.fillRect(blockX, blockY, BLOCK_W, BLOCK_H);
171 }
172
173 private void setRequestVSync(boolean reqVSync) {
174 requestVSync = reqVSync;
175 }
176
177 @Override
178 public Dimension getPreferredSize() {
179 return new Dimension(BLOCK_W*10+20, BLOCK_H+20);
180 }
181
182 private static int frameNum = 0;
183 private static Frame createAndShowBSFrame() {
184 final Frame f = new Frame("Not V-Synced");
185
186 int myNum;
187 synchronized (VSyncedBufferStrategyTest.class) {
188 myNum = frameNum++;
189 }
190
191 final VSyncedBufferStrategyTest component =
192 new VSyncedBufferStrategyTest(false);
193 f.setIgnoreRepaint(true);
194 f.add("Center", component);
195
196 Panel p = new Panel();
197
198 Button b = new Button("Request VSync");
199 b.addActionListener(new ActionListener() {
200 public void actionPerformed(ActionEvent e) {
201 f.setTitle("Possibly V-Synced");
202 component.setRequestVSync(true);
203 }
204 });
205 p.add(b);
206
207 b = new Button("Relinquish VSync");
208 b.addActionListener(new ActionListener() {
209 int inc = 1;
210 public void actionPerformed(ActionEvent e) {
211 f.setTitle("Not V-Synced");
212 component.setRequestVSync(false);
213 f.setSize(f.getWidth()+inc, f.getHeight());
214 inc = -inc;
215 }
216 });
217 p.add(b);
218
219 f.add("South", p);
220
221 f.pack();
222 f.setLocation(10, myNum * f.getHeight());
223 f.setVisible(true);
224 f.addWindowListener(new WindowAdapter() {
225 @Override
226 public void windowClosing(WindowEvent e) {
227 component.done = true;
228 f.dispose();
229 }
230 @Override
231 public void windowClosed(WindowEvent e) {
232 component.done = true;
233 }
234 });
235
236 return f;
237 }
238
239 private static final String description =
240 "Tests that v-synced BufferStrategy works. Note that it in some\n" +
241 "cases the v-sync can not be enabled, and it is accepted.\n" +
242 "The following however is true: only one buffer strategy at a time can\n"+
243 "be created v-synced. In order for other BS to become v-synced, the one\n"+
244 "that currently is v-synched (or its window) needs to be disposed.\n" +
245 "Try the following scenarios:\n" +
246 " - click the \"Request VSync\" button in one of the frames. If the\n"+
247 " behavior of the animation changes - the animation becomes smooth\n" +
248 " it had successfully created a v-synced BS. Note that the animation\n" +
249 " in other frames may also become smoother - this is a side-effect\n"+
250 " of one of the BS-es becoming v-synched\n" +
251 " - click the \"Relinquish VSync\" button on the same frame. If the\n"+
252 " behavior changes to the original (tearing)- it had successfully\n" +
253 " created a non-vsynced strategy.\n" +
254 " - next, try making another one v-synced. It should succeed.\n" +
255 " - next, try making another one v-synced - while there's already\n" +
256 " a v-synced frame. It should not succeed - meaning, it shouldn't\n" +
257 " appear to become smoother, and the behavior of the current v-synced\n" +
258 " frame shouldn't change.\n" +
259 "\n" +
260 "If there aren't any BufferStrategy-related exceptions or other\n" +
261 "issues, and the scenarios worked, the test passed, otherwise it\n"+
262 "failed.\n";
263
264 private static void createAndShowDescGUI(final Frame f3, final Frame f1,
265 final Frame f2)
266 throws HeadlessException, RuntimeException
267 {
268 final JFrame desc =
269 new JFrame("VSyncedBufferStrategyTest - Description");
270 desc.addWindowListener(new WindowAdapter() {
271
272 @Override
273 public void windowClosing(WindowEvent e) {
274 f1.dispose();
275 f2.dispose();
276 f3.dispose();
277 l.countDown();
278 }
279 });
280 JPanel p = new JPanel();
281 JButton bPassed = new JButton("Passed");
282 bPassed.addActionListener(new ActionListener() {
283 public void actionPerformed(ActionEvent e) {
284 desc.dispose();
285 f1.dispose();
286 f2.dispose();
287 f3.dispose();
288 l.countDown();
289 }
290 });
291 JButton bFailed = new JButton("Failed");
292 bFailed.addActionListener(new ActionListener() {
293 public void actionPerformed(ActionEvent e) {
294 failed = true;
295 desc.dispose();
296 f1.dispose();
297 f2.dispose();
298 f3.dispose();
299 l.countDown();
300 }
301 });
302 p.setLayout(new FlowLayout());
303 p.add(bPassed);
304 p.add(bFailed);
305 JTextArea ta = new JTextArea(24, 75);
306 ta.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
307 ta.setEditable(false);
308 ta.setText(description);
309 desc.add("Center", new JScrollPane(ta));
310 desc.add("South", p);
311 desc.pack();
312 desc.setLocation(BLOCK_W*10+50, 0);
313 desc.setVisible(true);
314 }
315
316 private static void createTestFrames() {
317 Frame f1 = createAndShowBSFrame();
318 Frame f2 = createAndShowBSFrame();
319 Frame f3 = createAndShowBSFrame();
320 createAndShowDescGUI(f1, f2, f3);
321 }
322
323 static boolean failed = false;
324 static CountDownLatch l = new CountDownLatch(1);
325 public static void main(String[] args) throws Exception {
326 EventQueue.invokeLater(new Runnable() {
327 public void run() {
328 createTestFrames();
329 }
330 });
331 l.await();
332 if (failed) {
333 throw new RuntimeException("Test FAILED");
334 }
335 System.out.println("Test PASSED");
336 }
337
338 }