Merged changes from dev-1_4 branch into the main trunk.

NOTE: all 1.4 development will now proceed on the main trunk. The dev-1_4 branch is closed.

11 files changed, 1246 insertions, 0 deletions

diff --git a/src/GLSLShaderTest/ObjLoadGLSL.java b/src/GLSLShaderTest/ObjLoadGLSL.java
new file mode 100644
index 0000000..12369cd
--- /dev/null
+++ b/src/GLSLShaderTest/ObjLoadGLSL.java
@@ -0,0 +1,346 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution 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 Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import com.sun.j3d.loaders.objectfile.ObjectFile;
+import com.sun.j3d.loaders.ParsingErrorException;
+import com.sun.j3d.loaders.IncorrectFormatException;
+import com.sun.j3d.loaders.Scene;
+import com.sun.j3d.utils.shader.StringIO;
+import java.applet.Applet;
+import java.awt.*;
+import java.awt.event.*;
+import com.sun.j3d.utils.applet.MainFrame;
+import com.sun.j3d.utils.universe.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+import java.util.Enumeration;
+import java.io.*;
+import com.sun.j3d.utils.behaviors.vp.*;
+import java.net.URL;
+import java.net.MalformedURLException;
+
+public class ObjLoadGLSL extends Applet {
+
+    private String shaderName = "polkadot3d";
+    private boolean spin = false;
+    private boolean noTriangulate = false;
+    private boolean noStripify = false;
+    private double creaseAngle = 60.0;
+    private URL filename = null;
+    private SimpleUniverse u;
+    private BoundingSphere bounds;
+
+    public BranchGroup createSceneGraph() {
+	// Create the root of the branch graph
+	BranchGroup objRoot = new BranchGroup();
+
+        // Create a Transformgroup to scale all objects so they
+        // appear in the scene.
+        TransformGroup objScale = new TransformGroup();
+        Transform3D t3d = new Transform3D();
+        t3d.setScale(0.7);
+        objScale.setTransform(t3d);
+        objRoot.addChild(objScale);
+
+	// Create the transform group node and initialize it to the
+	// identity.  Enable the TRANSFORM_WRITE capability so that
+	// our behavior code can modify it at runtime.  Add it to the
+	// root of the subgraph.
+	TransformGroup objTrans = new TransformGroup();
+	objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+	objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
+	objScale.addChild(objTrans);
+
+	int flags = ObjectFile.RESIZE;
+	if (!noTriangulate) flags |= ObjectFile.TRIANGULATE;
+	if (!noStripify) flags |= ObjectFile.STRIPIFY;
+	ObjectFile f = new ObjectFile(flags, 
+	  (float)(creaseAngle * Math.PI / 180.0));
+	Scene s = null;
+	try {
+	  s = f.load(filename);
+	}
+	catch (FileNotFoundException e) {
+	    e.printStackTrace();
+	    System.exit(1);
+	}
+	catch (ParsingErrorException e) {
+	    e.printStackTrace();
+	    System.exit(1);
+	}
+	catch (IncorrectFormatException e) {
+	    e.printStackTrace();
+	    System.exit(1);
+	}
+	  
+	// Set vertex and fragment shader program for all Shape3D nodes in scene
+	String vertexProgram = null;
+	String fragmentProgram = null;
+	try {
+	    vertexProgram = StringIO.readFully(shaderName + ".vert");
+	    fragmentProgram = StringIO.readFully(shaderName + ".frag");
+	}
+	catch (IOException e) {
+	    e.printStackTrace();
+	    System.exit(1);
+	}
+	Shader[] shaders = new Shader[2];
+	shaders[0] = new SourceCodeShader(Shader.SHADING_LANGUAGE_GLSL,
+					  Shader.SHADER_TYPE_VERTEX,
+					  vertexProgram);
+	shaders[1] = new SourceCodeShader(Shader.SHADING_LANGUAGE_GLSL,
+					  Shader.SHADER_TYPE_FRAGMENT,
+					  fragmentProgram);
+	ShaderProgram shaderProgram = new GLSLShaderProgram();
+	shaderProgram.setShaders(shaders);
+	setShaderProgram(s.getSceneGroup(), shaderProgram);
+
+	objTrans.addChild(s.getSceneGroup());
+
+	bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
+
+        if (spin) {
+	  Transform3D yAxis = new Transform3D();
+	  Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
+					  0, 0,
+					  4000, 0, 0,
+					  0, 0, 0);
+
+	  RotationInterpolator rotator =
+	      new RotationInterpolator(rotationAlpha, objTrans, yAxis,
+				       0.0f, (float) Math.PI*2.0f);
+	  rotator.setSchedulingBounds(bounds);
+	  objTrans.addChild(rotator);
+	} 
+
+        // Set up the background
+        Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f);
+        Background bgNode = new Background(bgColor);
+        bgNode.setApplicationBounds(bounds);
+        objRoot.addChild(bgNode);
+
+	return objRoot;
+    }
+
+    private void usage()
+    {
+      System.out.println(
+	"Usage: java ObjLoadGLSL [-s] [-S shaderName] [-n] [-t] [-c degrees] <.obj file>");
+      System.out.println("  -s Spin (no user interaction)");
+      System.out.println("  -S Set shader name (default is 'simple')");
+      System.out.println("  -n No triangulation");
+      System.out.println("  -t No stripification");
+      System.out.println(
+	"  -c Set crease angle for normal generation (default is 60 without");
+      System.out.println(
+	"     smoothing group info, otherwise 180 within smoothing groups)");
+      System.exit(0);
+    } // End of usage
+
+
+
+    public void init() {
+	if (filename == null) {
+            // Applet
+            try {
+                URL path = getCodeBase();
+                filename = new URL(path.toString() + "./galleon.obj");
+            }
+            catch (MalformedURLException e) {
+	      System.err.println(e);
+	      System.exit(1);
+            }
+	}
+
+	setLayout(new BorderLayout());
+        GraphicsConfiguration config =
+           SimpleUniverse.getPreferredConfiguration();
+
+        Canvas3D c = new Canvas3D(config);
+	add("Center", c);
+
+	// Create a simple scene and attach it to the virtual universe
+	BranchGroup scene = createSceneGraph();
+	u = new SimpleUniverse(c);
+	
+	// add mouse behaviors to the ViewingPlatform
+	ViewingPlatform viewingPlatform = u.getViewingPlatform();
+
+	PlatformGeometry pg = new PlatformGeometry();
+
+	// Set up the ambient light
+	Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
+	AmbientLight ambientLightNode = new AmbientLight(ambientColor);
+	ambientLightNode.setInfluencingBounds(bounds);
+	pg.addChild(ambientLightNode);
+
+	// Set up the directional lights
+	Color3f light1Color = new Color3f(1.0f, 0.2f, 0.4f);
+	Vector3f light1Direction  = new Vector3f(-1.0f, -1.0f, -1.0f);
+	Color3f light2Color = new Color3f(1.0f, 1.0f, 0.9f);
+	Vector3f light2Direction  = new Vector3f(1.0f, 1.0f, 1.0f);
+
+	DirectionalLight light1
+	    = new DirectionalLight(light1Color, light1Direction);
+	light1.setInfluencingBounds(bounds);
+	pg.addChild(light1);
+
+	DirectionalLight light2
+	    = new DirectionalLight(light2Color, light2Direction);
+	light2.setInfluencingBounds(bounds);
+	pg.addChild(light2);
+
+	viewingPlatform.setPlatformGeometry( pg );
+      
+	// This will move the ViewPlatform back a bit so the
+	// objects in the scene can be viewed.
+	viewingPlatform.setNominalViewingTransform();
+
+	if (!spin) {
+            OrbitBehavior orbit = new OrbitBehavior(c,
+						    OrbitBehavior.REVERSE_ALL);
+            BoundingSphere bounds =
+                new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);
+            orbit.setSchedulingBounds(bounds);
+            viewingPlatform.setViewPlatformBehavior(orbit);	    
+	}
+
+	/*
+	// Limit the frame rate to 100 Hz
+	u.getViewer().getView().setMinimumFrameCycleTime(10);
+	*/
+
+	u.addBranchGraph(scene);
+    }
+
+    // Set shader program for all nodes in specified branch graph
+    private void setShaderProgram(BranchGroup g, ShaderProgram shaderProgram) {
+	ShaderAppearance myApp = new ShaderAppearance();
+	Material mat = new Material();
+	myApp.setShaderProgram(shaderProgram);
+	myApp.setMaterial(mat);
+	setShaderProgram(g, myApp);
+    }
+
+    // Recursively set shader program for all children of specified group
+    private void setShaderProgram(Group g,
+				  ShaderAppearance myApp) {
+
+	Enumeration e = g.getAllChildren();
+	while (e.hasMoreElements()) {
+	    Node n = (Node)(e.nextElement());
+	    if (n instanceof Group) {
+		setShaderProgram((Group)n, myApp);
+	    }
+	    else if (n instanceof Shape3D) {
+		Shape3D s = (Shape3D)n;
+		s.setAppearance(myApp);
+	    }
+	}
+    }
+
+    // Caled if running as a program
+    public ObjLoadGLSL(String[] args) {
+      if (args.length != 0) {
+	for (int i = 0 ; i < args.length ; i++) {
+	  if (args[i].startsWith("-")) {
+	    if (args[i].equals("-s")) {
+	      spin = true;
+	    } else if (args[i].equals("-n")) {
+	      noTriangulate = true;
+	    } else if (args[i].equals("-t")) {
+	      noStripify = true;
+	    } else if (args[i].equals("-c")) {
+	      if (i < args.length - 1) {
+		creaseAngle = (new Double(args[++i])).doubleValue();
+	      } else usage();
+	    } else if (args[i].equals("-S")) {
+	      if (i < args.length - 1) {
+		shaderName = args[++i];
+	      } else usage();
+	    } else {
+	      usage();
+	    }
+	  } else {
+	    try {
+	      if ((args[i].indexOf("file:") == 0) ||
+		  (args[i].indexOf("http") == 0)) {
+		  filename = new URL(args[i]);
+	      }
+	      else if (args[i].charAt(0) != '/') {
+		  filename = new URL("file:./" + args[i]);
+	      }
+	      else {
+		  filename = new URL("file:" + args[i]);
+	      }
+            }
+	    catch (MalformedURLException e) {
+	      System.err.println(e);
+	      System.exit(1);
+	    }
+	  }
+	}
+      }
+    }
+
+
+
+    // Running as an applet
+    public ObjLoadGLSL() {
+    }
+
+    public void destroy() {
+	u.cleanup();
+    }
+
+
+
+    //
+    // The following allows ObjLoadGLSL to be run as an application
+    // as well as an applet
+    //
+    public static void main(String[] args) {
+      new MainFrame(new ObjLoadGLSL(args), 700, 700);
+    }
+}
diff --git a/src/GLSLShaderTest/SphereGLSL.java b/src/GLSLShaderTest/SphereGLSL.java
new file mode 100644
index 0000000..87d589e
--- /dev/null
+++ b/src/GLSLShaderTest/SphereGLSL.java
@@ -0,0 +1,345 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution 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 Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import java.applet.Applet;
+import java.awt.*;
+import java.io.*;
+import com.sun.j3d.utils.applet.MainFrame;
+import com.sun.j3d.utils.geometry.Sphere;
+import com.sun.j3d.utils.shader.StringIO;
+import com.sun.j3d.utils.universe.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+import java.util.Enumeration;
+import java.net.URL;
+import java.net.MalformedURLException;
+
+/**
+ * Simple GLSL Shader test program
+ */
+public class SphereGLSL extends Applet {
+
+    // Constants for type of light to use
+    private static final int DIRECTIONAL_LIGHT = 0;
+    private static final int POINT_LIGHT = 1;
+    private static final int SPOT_LIGHT = 2;
+
+    // Flag indicates type of lights: directional, point, or spot
+    // lights.  This flag is set based on command line argument
+    private static int lightType = DIRECTIONAL_LIGHT;
+
+    private SimpleUniverse u = null;
+
+    public BranchGroup createSceneGraph(SimpleUniverse u) {
+	Color3f eColor    = new Color3f(0.0f, 0.0f, 0.0f);
+	Color3f sColor    = new Color3f(1.0f, 1.0f, 1.0f);
+	Color3f objColor  = new Color3f(0.6f, 0.6f, 0.6f);
+	Color3f lColor1   = new Color3f(1.0f, 0.0f, 0.0f);
+	Color3f lColor2   = new Color3f(0.0f, 1.0f, 0.0f);
+	Color3f alColor   = new Color3f(0.2f, 0.2f, 0.2f);
+	Color3f bgColor   = new Color3f(0.05f, 0.05f, 0.2f);
+
+	Transform3D t;
+
+	// Create the root of the branch graph
+	BranchGroup objRoot = new BranchGroup();
+
+        // Create a Transformgroup to scale all objects so they
+        // appear in the scene.
+        TransformGroup objScale = new TransformGroup();
+        Transform3D t3d = new Transform3D();
+        t3d.setScale(0.4);
+        objScale.setTransform(t3d);
+        objRoot.addChild(objScale);
+
+	// Create a bounds for the background and lights
+	BoundingSphere bounds =
+	    new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
+
+	// Set up the background
+	Background bg = new Background(bgColor);
+	bg.setApplicationBounds(bounds);
+	objScale.addChild(bg);
+
+	// Create a Sphere object, generate one copy of the sphere,
+	// and add it into the scene graph.
+	ShaderAppearance a = new ShaderAppearance();
+	Material m = new Material(objColor, eColor, objColor, sColor, 100.0f);
+	m.setLightingEnable(true);
+	String vertexProgram = null;
+	String fragmentProgram = null;
+	try {
+	    vertexProgram = StringIO.readFully("./simple.vert");
+	    fragmentProgram = StringIO.readFully("./simple.frag");
+	}
+	catch (IOException e) {
+	    /*
+	    e.printStackTrace();
+	    System.exit(1);
+	    */
+	    System.err.println(e);
+	}
+	Shader[] shaders = new Shader[2];
+	shaders[0] = new SourceCodeShader(Shader.SHADING_LANGUAGE_GLSL,
+					  Shader.SHADER_TYPE_VERTEX,
+					  vertexProgram);
+	shaders[1] = new SourceCodeShader(Shader.SHADING_LANGUAGE_GLSL,
+					  Shader.SHADER_TYPE_FRAGMENT,
+					  fragmentProgram);
+	ShaderProgram shaderProgram = new GLSLShaderProgram();
+	shaderProgram.setShaders(shaders);
+
+	a.setShaderProgram(shaderProgram);
+	a.setMaterial(m);
+	Sphere sph = new Sphere(1.0f, Sphere.GENERATE_NORMALS, 200, a);
+	objScale.addChild(sph);
+
+	// Create the transform group node for the each light and initialize
+	// it to the identity.  Enable the TRANSFORM_WRITE capability so that
+	// our behavior code can modify it at runtime.  Add them to the root
+	// of the subgraph.
+	TransformGroup l1RotTrans = new TransformGroup();
+	l1RotTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+	objScale.addChild(l1RotTrans);
+
+	TransformGroup l2RotTrans = new TransformGroup();
+	l2RotTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+	objScale.addChild(l2RotTrans);
+
+	// Create transformations for the positional lights
+	t = new Transform3D();
+	Vector3d lPos1 =  new Vector3d(0.0, 0.0, 2.0);
+	t.set(lPos1);
+	TransformGroup l1Trans = new TransformGroup(t);
+	l1RotTrans.addChild(l1Trans);
+
+	t = new Transform3D();
+	Vector3d lPos2 = new Vector3d(0.5, 0.8, 2.0);
+	t.set(lPos2);
+	TransformGroup l2Trans = new TransformGroup(t);
+	l2RotTrans.addChild(l2Trans);
+
+	/*
+	// Create Geometry for point lights
+	ColoringAttributes caL1 = new ColoringAttributes();
+	ColoringAttributes caL2 = new ColoringAttributes();
+	caL1.setColor(lColor1);
+	caL2.setColor(lColor2);
+	Appearance appL1 = new Appearance();
+	Appearance appL2 = new Appearance();
+	appL1.setColoringAttributes(caL1);
+	appL2.setColoringAttributes(caL2);
+	l1Trans.addChild(new Sphere(0.05f, appL1));
+	l2Trans.addChild(new Sphere(0.05f, appL2));
+	*/
+
+	// Create lights
+	AmbientLight aLgt = new AmbientLight(alColor);
+
+	Light lgt1 = null;
+	Light lgt2 = null;
+
+	Point3f lPoint  = new Point3f(0.0f, 0.0f, 0.0f);
+	Point3f atten = new Point3f(1.0f, 0.0f, 0.0f);
+	Vector3f lDirect1 = new Vector3f(lPos1);
+	Vector3f lDirect2 = new Vector3f(lPos2);
+	lDirect1.negate();
+	lDirect2.negate();
+
+	switch (lightType) {
+	case DIRECTIONAL_LIGHT:
+	    lgt1 = new DirectionalLight(lColor1, lDirect1);
+	    lgt2 = new DirectionalLight(lColor2, lDirect2);
+	    break;
+	case POINT_LIGHT:
+	    lgt1 = new PointLight(lColor1, lPoint, atten);
+	    lgt2 = new PointLight(lColor2, lPoint, atten);
+	    break;
+	case SPOT_LIGHT:
+	    lgt1 = new SpotLight(lColor1, lPoint, atten, lDirect1,
+				 25.0f * (float)Math.PI / 180.0f, 10.0f);
+	    lgt2 = new SpotLight(lColor2, lPoint, atten, lDirect2,
+				 25.0f * (float)Math.PI / 180.0f, 10.0f);
+	    break;
+	}
+
+	// Set the influencing bounds
+	aLgt.setInfluencingBounds(bounds);
+	lgt1.setInfluencingBounds(bounds);
+	lgt2.setInfluencingBounds(bounds);
+
+	// Add the lights into the scene graph
+	objScale.addChild(aLgt);
+	l1Trans.addChild(lgt1);
+	l2Trans.addChild(lgt2);
+
+	// Create a new Behavior object that will perform the desired
+	// operation on the specified transform object and add it into the
+	// scene graph.
+	Transform3D yAxis = new Transform3D();
+	Alpha rotor1Alpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
+				     0, 0,
+				     4000, 0, 0,
+				     0, 0, 0);
+	RotationInterpolator rotator1 =
+	    new RotationInterpolator(rotor1Alpha,
+				     l1RotTrans,
+				     yAxis,
+				     0.0f, (float) Math.PI*2.0f);
+	rotator1.setSchedulingBounds(bounds);
+	l1RotTrans.addChild(rotator1);
+
+	// Create a new Behavior object that will perform the desired
+	// operation on the specified transform object and add it into the
+	// scene graph.
+	Alpha rotor2Alpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
+				     0, 0,
+				     1000, 0, 0,
+				     0, 0, 0);
+	RotationInterpolator rotator2 =
+	    new RotationInterpolator(rotor2Alpha,
+				     l2RotTrans,
+				     yAxis,
+				     0.0f, 0.0f);
+	bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
+	rotator2.setSchedulingBounds(bounds);
+	l2RotTrans.addChild(rotator2);
+
+	// Create a position interpolator and attach it to the view
+	// platform
+	TransformGroup vpTrans =
+	    u.getViewingPlatform().getViewPlatformTransform();
+	Transform3D axisOfTranslation = new Transform3D();
+	Alpha transAlpha = new Alpha(-1,
+				      Alpha.INCREASING_ENABLE |
+				      Alpha.DECREASING_ENABLE,
+				      0, 0,
+				      5000, 0, 0,
+				      5000, 0, 0);
+	axisOfTranslation.rotY(-Math.PI/2.0);
+	PositionInterpolator translator =
+	    new PositionInterpolator(transAlpha,
+				     vpTrans,
+				     axisOfTranslation,
+				     2.0f, 3.5f);
+	translator.setSchedulingBounds(bounds);
+	objScale.addChild(translator);
+
+        // Let Java 3D perform optimizations on this scene graph.
+        objRoot.compile();
+
+	return objRoot;
+    }
+
+    public SphereGLSL() {
+    }
+
+    public void init() {
+	setLayout(new BorderLayout());
+        GraphicsConfiguration config =
+           SimpleUniverse.getPreferredConfiguration();
+
+        Canvas3D c = new Canvas3D(config);
+	add("Center", c);
+
+	u = new SimpleUniverse(c);
+	BranchGroup scene = createSceneGraph(u);
+
+        // This will move the ViewPlatform back a bit so the
+        // objects in the scene can be viewed.
+        u.getViewingPlatform().setNominalViewingTransform();
+
+	/*
+	// Limit the frame rate to 100 Hz
+	u.getViewer().getView().setMinimumFrameCycleTime(10);
+	*/
+
+	u.addBranchGraph(scene);
+    }
+
+    public void destroy() {
+	u.cleanup();
+    }
+
+    //
+    // The following allows SphereGLSL to be run as an application
+    // as well as an applet
+    //
+    public static void main(String[] args) {
+        // Parse the Input Arguments
+	String usage = "Usage: java SphereGLSL [-point | -spot | -dir]";
+        for (int i = 0; i < args.length; i++) {
+            if (args[i].startsWith("-")) {
+                if (args[i].equals("-point")) {
+		    /*
+		    System.out.println("Using point lights");
+                    lightType = POINT_LIGHT;
+		    */
+		    System.out.println("Point lights not yet implemented, option ignored");
+                }
+		else if (args[i].equals("-spot")) {
+		    /*
+		    System.out.println("Using spot lights");
+                    lightType = SPOT_LIGHT;
+		    */
+		    System.out.println("Spot lights not yet implemented, option ignored");
+                }
+		else if (args[i].equals("-dir")) {
+		    System.out.println("Using directional lights");
+                    lightType = DIRECTIONAL_LIGHT;
+                }
+		else {
+		    System.out.println(usage);
+                    System.exit(0);
+                }
+            }
+	    else {
+		System.out.println(usage);
+		System.exit(0);
+	    }
+        }
+
+	new MainFrame(new SphereGLSL(), 700, 700);
+    }
+}
diff --git a/src/GLSLShaderTest/build.xml b/src/GLSLShaderTest/build.xml
new file mode 100644
index 0000000..47e5a36
--- /dev/null
+++ b/src/GLSLShaderTest/build.xml
@@ -0,0 +1,69 @@
+<?xml version="1.0"?>
+
+<!--
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution 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 Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+ -->
+
+<project basedir="." default="compile">
+    <target name="compile">
+        <javac
+            destdir="." srcdir="."
+            source="1.4" target="1.4"
+	    debug="true" deprecation="true">
+        </javac>
+    </target>
+
+    <target name="all" depends="compile">
+    </target>
+
+    <target description="Clean all build products." name="clean">
+        <delete>
+            <fileset dir=".">
+                <include name="**/*.class"/>
+            </fileset>
+        </delete>
+    </target>
+
+</project>
diff --git a/src/GLSLShaderTest/dimple.frag b/src/GLSLShaderTest/dimple.frag
new file mode 100644
index 0000000..70d2982
--- /dev/null
+++ b/src/GLSLShaderTest/dimple.frag
@@ -0,0 +1,57 @@
+
+//
+// dimple.frag: Fragment shader for bump mapping dimples (bumps)
+//
+// author: John Kessenich
+//
+// Copyright (c) 2002: 3Dlabs, Inc.
+//
+//
+varying vec3 LightDir;
+varying vec3 EyeDir;
+varying vec3 Normal;
+
+const vec3 color = vec3(0.7, 0.6, 0.18);
+
+//const float Density = 16.0;
+//const float Size = 0.25;
+
+//uniform float Density;
+//uniform float Size;
+float Density = 27.6;
+float Size = 0.13025;
+
+
+//uniform float Scale;
+
+const float SpecularFactor = 0.5;
+
+void main (void)
+{
+    vec3 litColor;
+
+    vec2 c = Density * (gl_TexCoord[0].xy);
+    vec2 p = fract(c) - vec2(0.5);
+    float d = (p.x * p.x) + (p.y * p.y);
+    if (d >= Size)
+        p = vec2(0.0);
+
+    vec3 normDelta = vec3(-p.x, -p.y, 1.0);
+      
+    litColor = color * max(0.0, dot(normDelta, LightDir));
+      
+    float t = 2.0 * dot(LightDir, normDelta);
+    vec3 reflectDir = t * normDelta;
+    reflectDir = LightDir - reflectDir;
+    
+//    vec3 reflectDir = LightDir - 2.0 * dot(LightDir, normDelta) * normDelta;
+    
+    float spec = max(dot(EyeDir, reflectDir), 0.0);
+    spec = spec * spec;
+    spec = spec * spec;
+    spec *= SpecularFactor;
+
+    litColor = min(litColor + spec, vec3(1.0));
+    gl_FragColor = vec4(litColor, 1.0);
+//    gl_FragColor = vec4(Scale);
+}
diff --git a/src/GLSLShaderTest/dimple.vert b/src/GLSLShaderTest/dimple.vert
new file mode 100644
index 0000000..0707d71
--- /dev/null
+++ b/src/GLSLShaderTest/dimple.vert
@@ -0,0 +1,41 @@
+
+//
+// dimple.vert: Vertex shader for bump mapping dimples (bumps)
+//
+// author: John Kessenich
+//
+// Copyright (c) 2002: 3Dlabs, Inc.
+//
+
+varying vec3 LightDir;
+varying vec3 EyeDir;
+varying vec3 Normal;
+
+//uniform vec3 LightPosition;
+//uniform float Scale;
+vec3 LightPosition = vec3(0.0, 0.0, 5.0);
+float Scale = 1.0;
+
+void main(void) 
+{
+	vec4 pos = gl_ModelViewMatrix * gl_Vertex;
+    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+    vec3 eyeDir = vec3(pos);
+//    gl_TexCoord[0] = gl_MultiTexCoord0;
+    gl_TexCoord[0] = gl_Vertex;
+
+    vec3 n = normalize(gl_NormalMatrix * gl_Normal);
+    vec3 t = normalize(cross(vec3(1.141, 2.78, 3.14), n));
+    vec3 b = cross(n, t);
+
+    vec3 v;
+    v.x = dot(LightPosition, t);
+    v.y = dot(LightPosition, b);
+    v.z = dot(LightPosition, n);
+    LightDir = normalize(v);
+
+    v.x = dot(eyeDir, t);
+    v.y = dot(eyeDir, b);
+    v.z = dot(eyeDir, n);
+    EyeDir = normalize(v);
+}
diff --git a/src/GLSLShaderTest/polkadot3d.frag b/src/GLSLShaderTest/polkadot3d.frag
new file mode 100644
index 0000000..b341454
--- /dev/null
+++ b/src/GLSLShaderTest/polkadot3d.frag
@@ -0,0 +1,48 @@
+//
+// Fragment shader for 3 dimensional polka dot shader.
+//
+// Author:  Joshua Doss
+//   
+// Copyright (C) 2002-2004  3Dlabs Inc. Ltd.
+//
+// See 3Dlabs-License.txt for license information
+//
+varying float LightIntensity;
+varying vec3 MCPosition;
+
+//Create uniform variables so dots can be spaced and scaled by user
+//uniform vec3 Spacing;
+//uniform float DotSize;
+const vec3 Spacing = vec3 (0.314, 0.36, 0.261);
+const float DotSize = 0.123;
+
+//Create colors as uniform variables so they can be easily changed
+//uniform vec3 ModelColor, PolkaDotColor;
+const vec3 ModelColor = vec3 (0.75, 0.2, 0.1);
+const vec3 PolkaDotColor = vec3 (1, 1, 1);
+
+void main(void)
+{
+   float insidesphere, sphereradius, scaledpointlength;
+   vec3 scaledpoint, finalcolor;
+
+   // Scale the coordinate system
+   // The following line of code is not yet implemented in current drivers:
+   // mcpos = mod(Spacing, MCposition);
+   // We will use a workaround found below for now
+   scaledpoint       = MCPosition - (Spacing * floor(MCPosition/Spacing));
+
+   // Bring the scaledpoint vector into the center of the scaled coordinate system
+   scaledpoint       = scaledpoint - Spacing/2.0;
+
+   // Find the length of the scaledpoint vector and compare it to the dotsize
+   scaledpointlength = length(scaledpoint);
+   insidesphere      = step(scaledpointlength,DotSize);
+   
+   // Determine final output color before lighting
+   finalcolor        = vec3(mix(ModelColor, PolkaDotColor, insidesphere));
+
+   // Output final color and factor in lighting
+   gl_FragColor      = clamp((vec4( finalcolor, 1.0 ) * LightIntensity), vec4(0.0), vec4(1.0));
+}
+
diff --git a/src/GLSLShaderTest/polkadot3d.vert b/src/GLSLShaderTest/polkadot3d.vert
new file mode 100644
index 0000000..86f432f
--- /dev/null
+++ b/src/GLSLShaderTest/polkadot3d.vert
@@ -0,0 +1,58 @@
+// This is the Vertex Shader for three dimensional polka dots.
+//
+// author(s):  Joshua Doss
+//
+// Copyright (C) 2002-2004  3Dlabs Inc. Ltd.
+
+//Create uniform variables for lighting to allow user interaction
+//uniform float SpecularContribution;
+//uniform vec3 LightPosition;
+
+const float SpecularContribution = 0.36;
+const vec3 LightPosition = vec3 (0, 4, 5);
+
+varying vec3 MCPosition;
+varying float LightIntensity;
+
+void main(void)
+{
+    float diffusecontribution  = 1.0 - SpecularContribution;
+    
+    // compute the vertex position in eye coordinates
+    vec3  ecPosition           = vec3(gl_ModelViewMatrix * gl_Vertex);
+    
+    // compute the transformed normal
+    vec3  tnorm                = normalize(gl_NormalMatrix * gl_Normal);
+    
+    // compute a vector from the model to the light position
+    vec3  lightVec             = normalize(LightPosition - ecPosition);
+    
+    // compute the reflection vector
+    vec3  reflectVec           = reflect(-lightVec, tnorm);
+    
+    // compute a unit vector in direction of viewing position
+    vec3  viewVec              = normalize(-ecPosition);
+    
+    // calculate amount of diffuse light based on normal and light angle
+    float diffuse              = max(dot(lightVec, tnorm), 0.0);
+    float spec                 = 0.0;
+    
+    // if there is diffuse lighting, calculate specular
+    if(diffuse > 0.0)
+       {
+          spec = max(dot(reflectVec, viewVec), 0.0);
+          spec = pow(spec, 16.0);
+       }
+    
+    // add up the light sources, since this is a varying (global) it will pass to frag shader     
+    LightIntensity  = diffusecontribution * diffuse * 1.5 +
+                          SpecularContribution * spec;
+    
+    // the varying variable MCPosition will be used by the fragment shader to determine where
+    //    in model space the current pixel is                      
+    MCPosition      = vec3 (gl_Vertex);
+    
+    // send vertex information
+    gl_Position     = gl_ModelViewProjectionMatrix * gl_Vertex;
+}
+
diff --git a/src/GLSLShaderTest/simple.frag b/src/GLSLShaderTest/simple.frag
new file mode 100644
index 0000000..61c83ec
--- /dev/null
+++ b/src/GLSLShaderTest/simple.frag
@@ -0,0 +1,62 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution 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 Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+// Simple GLSL fragment program to attenuate the input fragment color as a
+// function of the distance of the fragment position from the center
+// of the window
+
+const float windowSize = 700.0; // TODO: this should be a built-in parameter!
+
+void main()
+{
+    // Compute distance from center in range [0.0, 1.0]
+    vec2 dist = min(abs((gl_FragCoord.xy - (windowSize)/2.0) / windowSize), 1.0);
+    vec2 invDist = 1.0 - dist;
+
+    // Compute attenuation
+    float atten = invDist.x * invDist.y;
+    vec4 outcolor = (gl_Color + gl_SecondaryColor) * atten;
+
+    gl_FragColor = outcolor;
+}
diff --git a/src/GLSLShaderTest/simple.vert b/src/GLSLShaderTest/simple.vert
new file mode 100644
index 0000000..c593816
--- /dev/null
+++ b/src/GLSLShaderTest/simple.vert
@@ -0,0 +1,129 @@
+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistribution 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 Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any
+ * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
+ * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
+ * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+// A simple GLSL vertex program for handling 2 directional lights with
+// separate specular
+
+void directionalLight(
+    in    int  i,
+    in    vec3 normal,
+    inout vec4 ambient,
+    inout vec4 diffuse,
+    inout vec4 specular)
+{
+    // Normalized light direction and half vector
+    // (shouldn't they be pre-normalized?!)
+    vec3 lightDirection = normalize(vec3(gl_LightSource[i].position));
+    vec3 halfVector = normalize(vec3(gl_LightSource[i].halfVector));
+
+    float nDotVP; // normal . light_direction
+    float nDotHV; // normal . light_half_vector
+    float pf; // power factor
+
+    nDotVP = max(0.0, dot(normal, lightDirection));
+    nDotHV = max(0.0, dot(normal, halfVector));
+
+    if (nDotVP == 0.0) {
+	pf = 0.0;
+    }
+    else {
+	pf = pow(nDotHV, gl_FrontMaterial.shininess);
+    }
+
+    ambient += gl_LightSource[i].ambient;
+    diffuse += gl_LightSource[i].diffuse * nDotVP;
+    specular += gl_LightSource[i].specular * pf;
+}
+
+
+const int numEnabledLights = 2; // TODO: this should be a built-in parameter!
+
+void main()
+{
+    //vec4 ecPosition = gl_ModelViewMatrix * gl_Vertex;
+    //vec3 ecPosition3 = ecPosition.xyz / ecPosition.w;
+    vec3 tnorm = normalize(vec3(gl_NormalMatrix * gl_Normal));
+    vec4 amb = vec4(0.0);
+    vec4 diff = vec4(0.0);
+    vec4 spec = vec4(0.0);
+    int i;
+
+    // Transform the vertex
+    vec4 outPosition = gl_ModelViewProjectionMatrix * gl_Vertex;
+
+    for (i = 0; i < numEnabledLights; i++) {
+	directionalLight(i, tnorm, amb, diff, spec);
+    }
+
+    // Apply the result of the lighting equation
+    vec4 outSecondaryColor = vec4(vec3(spec * gl_FrontMaterial.specular), 1.0);
+    vec3 color0 = vec3(gl_FrontLightModelProduct.sceneColor +
+		       amb * gl_FrontMaterial.ambient +
+		       diff * gl_FrontMaterial.diffuse);
+
+    // Generate a pseudo-random noise pattern
+    vec3 xyz = clamp((outPosition.xyz + 1.0) * 0.5, 0.0, 1.0);
+
+    xyz = fract(xyz * 262144.0);
+    float randSeed = fract(3.0 * xyz.x + 5.0 * xyz.y + 7.0 * xyz.z);
+
+    vec3 altColor;
+
+    randSeed = fract(37.0 * randSeed);
+    altColor.x = randSeed * 0.5 + 0.5;
+    randSeed = fract(37.0 * randSeed);
+    altColor.y = randSeed * 0.5 + 0.5;
+    randSeed = fract(37.0 * randSeed);
+    altColor.z = randSeed * 0.5 + 0.5;
+    randSeed = fract(37.0 * randSeed);
+    float altAlpha = randSeed * 0.5;
+
+    // Apply noise and output final vertex color
+    vec4 outColor;
+    outColor = vec4(mix(color0, altColor, altAlpha), 1.0);
+
+    gl_FrontColor = outColor;
+    gl_FrontSecondaryColor = outSecondaryColor;
+    gl_Position = outPosition;
+}
diff --git a/src/GLSLShaderTest/wood.frag b/src/GLSLShaderTest/wood.frag
new file mode 100644
index 0000000..eecf91f
--- /dev/null
+++ b/src/GLSLShaderTest/wood.frag
@@ -0,0 +1,66 @@
+//
+// Simple fragment shader for wood
+//
+// Author: John Kessenich
+//
+// Copyright (c) 2002-2004 3Dlabs Inc. Ltd.
+//
+// See 3Dlabs-License.txt for license information
+//
+
+//uniform float GrainSizeRecip;
+//uniform vec3  DarkColor;
+//uniform vec3  spread;
+const float GrainSizeRecip = 1.0;
+const vec3  DarkColor = vec3 (0.6, 0.3, 0.1);
+const vec3  spread = vec3 (0.15, 0.075, 0.0);
+
+varying float lightIntensity; 
+varying vec3 Position;
+
+void main (void)
+{
+    //
+    // cheap noise
+    //
+    vec3 location = Position;
+    vec3 floorvec = vec3(floor(10.0 * Position.x), 0.0, floor(10.0 * Position.z));
+    vec3 noise = Position * 10.0 - floorvec - 0.5;
+    noise *= noise;
+    location += noise * 0.12;
+
+    //
+    // distance from axis
+    //
+    float dist = location.x * location.x + location.z * location.z;
+    float grain = dist * GrainSizeRecip;
+
+    //
+    // grain effects as function of distance
+    //
+    float brightness = fract(grain);
+    if (brightness > 0.5) 
+        brightness = (1.0 - brightness);
+    vec3 color = DarkColor + brightness * spread;
+    
+    brightness = fract(grain * 7.0);    
+    if (brightness > 0.5) 
+        brightness = 1.0 - brightness;
+    color -= brightness * spread;
+
+    //
+    // also as a function of lines parallel to the axis
+    //
+    brightness = fract(grain * 47.0) * 0.60;
+    float line = fract(Position.z + Position.x);
+    float snap = floor(line * 20.0) * (1.0/20.0);
+    if (line < snap + 0.006)
+        color -= brightness * spread;
+
+    //
+    // apply lighting effects from vertex processor
+    //
+    color = clamp(color * lightIntensity, 0.0, 1.0); 
+
+    gl_FragColor = vec4(color, 1.0);
+}
diff --git a/src/GLSLShaderTest/wood.vert b/src/GLSLShaderTest/wood.vert
new file mode 100644
index 0000000..84651aa
--- /dev/null
+++ b/src/GLSLShaderTest/wood.vert
@@ -0,0 +1,25 @@
+//
+// Simple vertex shader for wood
+//
+// Author: John Kessenich
+//
+// Copyright (c) 2002-2004 3Dlabs Inc. Ltd.
+//
+// See 3Dlabs-License.txt for license information
+//
+
+varying float lightIntensity;
+varying vec3 Position;
+//uniform vec3 LightPosition;
+//uniform float Scale;
+const vec3 LightPosition = vec3 (0.0,0.0,0.4);
+const float Scale = 1.0;
+
+void main(void)
+{
+	vec4 pos = gl_ModelViewMatrix * gl_Vertex;
+	Position = vec3(gl_Vertex) * Scale;
+	vec3 tnorm = normalize(gl_NormalMatrix * gl_Normal);
+	lightIntensity = max(dot(normalize(LightPosition - vec3(pos)), tnorm), 0.0) * 1.5;
+	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+}