added test for multiple parallel applications: multiple OpenCL contexts do not work

jme3-examples/src/main/java/jme3test/opencl/TestMultipleApplications.java

@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2009-2016 jMonkeyEngine
+ * 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 'jMonkeyEngine' 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 jme3test.opencl;
+
+import com.jme3.app.SimpleApplication;
+import com.jme3.font.BitmapFont;
+import com.jme3.font.BitmapText;
+import com.jme3.font.Rectangle;
+import com.jme3.opencl.*;
+import com.jme3.system.AppSettings;
+import java.util.Collections;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * This class creates multiple instances of {@link TestVertexBufferSharing}.
+ * This is used to test if multiple opencl instances can run in parallel.
+ * @author Sebastian Weiss
+ */
+public class TestMultipleApplications extends SimpleApplication {
+    private static final Logger LOG = Logger.getLogger(TestMultipleApplications.class.getName());
+    
+    private static final Object sync = new Object();
+    private static Platform selectedPlatform;
+    private static List<? extends Device> availableDevices;
+    private static int currentDeviceIndex;
+    
+    private Context clContext;
+    private CommandQueue clQueue;
+    private Kernel kernel;
+    private Buffer buffer;
+    private boolean failed;
+    
+    private BitmapText infoText;
+    private BitmapText statusText;
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        final AppSettings settings = new AppSettings(true);
+        settings.setOpenCLSupport(true);
+        settings.setVSync(true);
+        settings.setOpenCLPlatformChooser(CustomPlatformChooser.class);
+        settings.setRenderer(AppSettings.JOGL_OPENGL_FORWARD_COMPATIBLE);
+        for (int i=0; i<2; ++i) {
+            new Thread() {
+                public void run() {
+                    if (currentDeviceIndex == -1) {
+                        return;
+                    }
+                    TestMultipleApplications app = new TestMultipleApplications();
+                    app.setSettings(settings);
+                    app.setShowSettings(false);
+                    app.start();
+                }
+            }.start();
+        }
+    }
+    
+    public static class CustomPlatformChooser implements PlatformChooser {
+
+        public CustomPlatformChooser() {}
+        
+        @Override
+        public List<? extends Device> chooseDevices(List<? extends Platform> platforms) {
+            synchronized(sync) {
+            if (currentDeviceIndex == -1) {
+                return Collections.emptyList();
+            }
+
+            Platform platform = platforms.get(0);
+            availableDevices = platform.getDevices();
+            selectedPlatform = platform;
+            
+            Device device = platform.getDevices().get(currentDeviceIndex);
+            currentDeviceIndex ++;
+            if (currentDeviceIndex >= availableDevices.size()) {
+                currentDeviceIndex = -1;
+            }
+            
+            return Collections.singletonList(device);
+            }
+        }
+        
+    }
+    
+    @Override
+    public void simpleInitApp() {
+        clContext = context.getOpenCLContext();
+        if (clContext == null) {
+            LOG.severe("No OpenCL context found");
+            stop();
+            return;
+        }
+        Device device = clContext.getDevices().get(0);
+        clQueue = clContext.createQueue(device);
+        clQueue.register();
+        
+        String source = ""
+                + "__kernel void Fill(__global float* vb, float v)\n"
+                + "{\n"
+                + "  int idx = get_global_id(0);\n"
+                + "  vb[idx] = v;\n"
+                + "}\n";
+        Program program = clContext.createProgramFromSourceCode(source);
+        program.build();
+        program.register();
+        kernel = program.createKernel("Fill");
+        kernel.register();
+        
+        buffer = clContext.createBuffer(4);
+        buffer.register();
+        
+        flyCam.setEnabled(false);
+        inputManager.setCursorVisible(true);
+        
+        BitmapFont fnt = assetManager.loadFont("Interface/Fonts/Default.fnt");
+        infoText = new BitmapText(fnt, false);
+        //infoText.setBox(new Rectangle(0, 0, settings.getWidth(), settings.getHeight()));
+        infoText.setText("Device: "+clContext.getDevices());
+        infoText.setLocalTranslation(0, settings.getHeight(), 0);
+        guiNode.attachChild(infoText);
+        statusText = new BitmapText(fnt, false);
+        //statusText.setBox(new Rectangle(0, 0, settings.getWidth(), settings.getHeight()));
+        statusText.setText("Running");
+        statusText.setLocalTranslation(0, settings.getHeight() - infoText.getHeight() - 2, 0);
+        guiNode.attachChild(statusText);
+    }
+
+    @Override
+    public void simpleUpdate(float tpf) {
+        //call kernel to test if it is still working
+        if (!failed) {
+            try {
+                kernel.Run1NoEvent(clQueue, new Kernel.WorkSize(1), buffer, 1.0f);
+            } catch (OpenCLException ex) {
+                LOG.log(Level.SEVERE, "Kernel call not working anymore", ex);
+                failed = true;
+                statusText.setText("Failed");
+            }
+        }
+    }
+}