Added PrintExt demo to print all GL extensions

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@77 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4

1 files changed, 69 insertions, 0 deletions

diff --git a/src/demos/printext/PrintExt.java b/src/demos/printext/PrintExt.java
new file mode 100755
index 0000000..3edb3a0
--- /dev/null
+++ b/src/demos/printext/PrintExt.java
@@ -0,0 +1,69 @@
+/*
+ * Portions Copyright (C) 2003 Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+package demos.printext;
+
+import java.awt.*;
+import net.java.games.jogl.*;
+
+public class PrintExt {
+  public static void main(String[] args) {
+    Frame frame = new Frame();
+    GLCanvas canvas = GLDrawableFactory.getFactory().createGLCanvas(new GLCapabilities());
+    canvas.addGLEventListener(new Listener());
+    frame.setUndecorated(true);
+    frame.add(canvas);
+    frame.setSize(1, 1);
+    frame.setVisible(true);
+  }
+
+  static class Listener implements GLEventListener {
+    public void init(GLDrawable drawable) {
+      GL gl = drawable.getGL();
+      System.out.println("GL vendor: " + gl.glGetString(GL.GL_VENDOR));
+      System.out.println("GL version: " + gl.glGetString(GL.GL_VERSION));
+      System.out.println("GL renderer: " + gl.glGetString(GL.GL_RENDERER));
+      System.out.println("GL extensions:");
+      String[] extensions = gl.glGetString(GL.GL_EXTENSIONS).split(" ");
+      int i = 0;
+      while (i < extensions.length) {
+        System.out.print("  ");
+        String ext = extensions[i++];
+        System.out.print(ext);
+        if (i < extensions.length) {
+          for (int j = 0; j < (40 - ext.length()); j++) {
+            System.out.print(" ");
+          }
+          System.out.println(extensions[i++]);
+        } else {
+          System.out.println();
+        }
+      }
+      runExit();
+    }
+
+    public void display(GLDrawable drawable) {
+    }
+
+    public void reshape(GLDrawable drawable, int x, int y, int w, int h) {
+    }
+
+    public void displayChanged(GLDrawable drawable, boolean modeChanged, boolean deviceChanged) {
+    }
+  }
+
+  private static void runExit() {
+    // Note: calling System.exit() synchronously inside the draw,
+    // reshape or init callbacks can lead to deadlocks on certain
+    // platforms (in particular, X11) because the JAWT's locking
+    // routines cause a global AWT lock to be grabbed. Run the
+    // exit routine in another thread.
+    new Thread(new Runnable() {
+        public void run() {
+          System.exit(0);
+        }
+      }).start();
+  }
+}