Add ReadBuffer Demos/ModuleTests; Incl. SurfaceUpdated Listener, ReadPixel to file, texture - direct or via attaching the drawable to another context as it's readbuffer

1 files changed, 207 insertions, 0 deletions

diff --git a/src/demos/readbuffer/Main.java b/src/demos/readbuffer/Main.java
new file mode 100755
index 0000000..ccc3988
--- /dev/null
+++ b/src/demos/readbuffer/Main.java
@@ -0,0 +1,207 @@
+package demos.readbuffer;
+
+import java.lang.reflect.*;
+import java.nio.*;
+import javax.media.opengl.*;
+import javax.media.nativewindow.*;
+import com.sun.javafx.newt.*;
+import com.sun.javafx.newt.opengl.*;
+
+public class Main implements WindowListener, MouseListener, SurfaceUpdatedListener {
+
+    public boolean quit = false;
+    public GLWindow window = null;
+
+    public void surfaceUpdated(Object updater, NativeWindow window, long when) {
+        if(null!=window) {
+            this.window.display();
+        }
+    }
+
+    public void windowResized(WindowEvent e) { }
+    public void windowMoved(WindowEvent e) { }
+    public void windowGainedFocus(WindowEvent e) { }
+    public void windowLostFocus(WindowEvent e) { }
+    public void windowDestroyNotify(WindowEvent e) {
+        quit = true;
+    }
+
+    public void mouseClicked(MouseEvent e) {
+        System.out.println("mouseevent: "+e);
+        switch(e.getClickCount()) {
+            case 1:
+                if(null!=window) {
+                    window.setFullscreen(!window.isFullscreen());
+                }
+                break;
+            default: 
+                quit=true;
+                break;
+        }
+    }
+    public void mouseEntered(MouseEvent e) {
+    }
+    public void mouseExited(MouseEvent e) {
+    }
+    public void mousePressed(MouseEvent e) {
+    }
+    public void mouseReleased(MouseEvent e) {
+    }
+    public void mouseMoved(MouseEvent e) {
+    }
+    public void mouseDragged(MouseEvent e) {
+    }
+    public void mouseWheelMoved(MouseEvent e) {
+    }
+
+    public GLWindow createOffscreen(GLCapabilities caps, int w, int h) {
+        GLCapabilities capsOffscreen = (GLCapabilities) caps.clone();
+        capsOffscreen.setOnscreen(false);
+        capsOffscreen.setPBuffer(true);
+        GLWindow windowOffscreen = GLWindow.create(capsOffscreen);
+        windowOffscreen.enablePerfLog(true);
+        windowOffscreen.setSize(w, h);
+        windowOffscreen.setVisible(true);
+        return windowOffscreen;
+    }
+
+    private void run(int typeNewt, boolean fullscreen, int typeTest, GLEventListener demo) {
+        int width = 800;
+        int height = 480;
+        System.out.println("readbuffer.Main.run() Test: "+typeTest);
+        try {
+            GLCapabilities caps = new GLCapabilities(null);
+
+            // Full init pbuffer window ..
+            GLWindow windowOffscreen = createOffscreen(caps, width, height);
+            // setField(demo, "glDebug", new Boolean(true));
+            // setField(demo, "glTrace", new Boolean(true));
+            if(!setField(demo, "window", windowOffscreen)) {
+                setField(demo, "glWindow", windowOffscreen);
+            }
+            windowOffscreen.addGLEventListener(demo);
+
+            if ( TEST_SURFACE2FILE < typeTest ) {
+                System.out.println("readbuffer.Main.run() Using a target onscreen window with read drawable attachment");
+                // Setup init onscreen window ..
+                Window nWindow = null;
+                if(0!=(typeNewt&USE_AWT)) {
+                    Display nDisplay = NewtFactory.createDisplay(NativeWindowFactory.TYPE_AWT, null); // local display
+                    Screen nScreen  = NewtFactory.createScreen(NativeWindowFactory.TYPE_AWT, nDisplay, 0); // screen 0
+                    nWindow = NewtFactory.createWindow(NativeWindowFactory.TYPE_AWT, nScreen, caps);
+                    window = GLWindow.create(nWindow);
+                } else {
+                    window = GLWindow.create(caps);
+                }
+
+                window.addWindowListener(this);
+                window.addMouseListener(this);
+
+                window.setSize(width, height);
+                window.setFullscreen(fullscreen);
+                window.setVisible(true);
+            }
+
+            GLDrawable readDrawable = windowOffscreen.getContext().getGLDrawable() ;
+
+            if ( TEST_SURFACE2FILE == typeTest ) {
+                Surface2File s2f = new Surface2File();
+                windowOffscreen.addSurfaceUpdatedListener(s2f);
+            } else if ( TEST_READBUFFER2FILE == typeTest ) {
+                ReadBuffer2File readDemo = new ReadBuffer2File( readDrawable ) ;
+                window.addGLEventListener(readDemo);
+            } else if ( TEST_READBUFFER2SCREEN == typeTest ) {
+                ReadBuffer2Screen readDemo = new ReadBuffer2Screen( readDrawable ) ;
+                window.addGLEventListener(readDemo);
+            }
+
+            if(null!=window) {
+                windowOffscreen.addSurfaceUpdatedListener(this);
+            }
+
+            System.out.println("+++++++++++++++++++++++++++");
+            System.out.println(windowOffscreen);
+            System.out.println("+++++++++++++++++++++++++++");
+
+            while ( !quit && windowOffscreen.getDuration() < 31000) {
+                // System.out.println("...............................");
+                windowOffscreen.display();
+            }
+
+            // Shut things down cooperatively
+            window.destroy();
+            windowOffscreen.destroy();
+            window.getFactory().shutdown();
+            System.out.println("readbuffer.Main shut down cleanly.");
+        } catch (GLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static int USE_NEWT      = 0;
+    public static int USE_AWT       = 1 << 0;
+
+    public static int TEST_SURFACE2FILE      = 0;
+    public static int TEST_READBUFFER2FILE   = 1;
+    public static int TEST_READBUFFER2SCREEN = 2;
+
+    public static void main(String[] args) {
+        boolean fullscreen = false;
+        int typeNewt = USE_NEWT ;
+        int typeTest = TEST_SURFACE2FILE;
+        int i=0;
+        while(i<args.length-1) {
+            if(args[i].equals("-awt")) {
+                typeNewt |= USE_AWT; 
+            } else if(args[i].equals("-fs")) {
+                fullscreen = true;
+            } else if(args[i].equals("-test")) {
+                i++;
+                typeTest = str2int(args[i], typeTest);
+            }
+            i++;
+        }
+        String demoClassName = args[i];
+        Object demoObject = null;
+
+        try {
+            Class demoClazz = Class.forName(demoClassName);
+            demoObject = demoClazz.newInstance();
+        } catch (Throwable t) {
+            t.printStackTrace();
+            throw new RuntimeException("Error while instantiating demo: "+demoClassName);
+        }
+        if( !(demoObject instanceof GLEventListener) ) {
+            throw new RuntimeException("Not a GLEventListener: "+demoClassName);
+        }
+        GLEventListener demo = (GLEventListener) demoObject;
+
+        new Main().run(typeNewt, fullscreen, typeTest, demo);
+        System.exit(0);
+    }
+
+    public static int str2int(String str, int def) {
+        try {
+            return Integer.parseInt(str);
+        } catch (Exception ex) { ex.printStackTrace(); }
+        return def;
+    }
+
+    public static boolean setField(Object instance, String fieldName, Object value) {
+        try {
+            Field f = instance.getClass().getField(fieldName);
+            if(f.getType().isInstance(value)) {
+                f.set(instance, value);
+                return true;
+            } else {
+                System.out.println(instance.getClass()+" '"+fieldName+"' field not assignable with "+value.getClass()+", it's a: "+f.getType());
+            }
+        } catch (NoSuchFieldException nsfe) {
+            System.out.println(instance.getClass()+" has no '"+fieldName+"' field");
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+        return false;
+    }
+
+}