Merge pull request #7 from toruwest/master

Test case of how to use instanced rendering.

8 files changed, 942 insertions, 0 deletions

diff --git a/src/demos/instancedRendering/IInstancedRenderingView.java b/src/demos/instancedRendering/IInstancedRenderingView.java
new file mode 100644
index 0000000..e76db6a
--- /dev/null
+++ b/src/demos/instancedRendering/IInstancedRenderingView.java
@@ -0,0 +1,33 @@
+/**
+ * Copyright 2014 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``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 JogAmp Community 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.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+ 
+ package com.jogamp.opengl.test.junit.jogl.demos.gl4;
+
+public interface IInstancedRenderingView {
+	float getScale();
+}
diff --git a/src/demos/instancedRendering/ManyTriangleInstanced.java b/src/demos/instancedRendering/ManyTriangleInstanced.java
new file mode 100644
index 0000000..c236f86
--- /dev/null
+++ b/src/demos/instancedRendering/ManyTriangleInstanced.java
@@ -0,0 +1,110 @@
+/**
+ * Copyright 2014 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``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 JogAmp Community 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.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package demos.instancedRendering;
+
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.awt.event.MouseWheelEvent;
+import java.awt.event.MouseWheelListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLProfile;
+import javax.media.opengl.awt.GLCanvas;
+import javax.swing.JFrame;
+import javax.swing.SwingUtilities;
+
+import com.jogamp.opengl.util.FPSAnimator;
+
+public class ManyTriangleInstanced implements IInstancedRenderingView {
+
+	private final JFrame frame;
+	private final FPSAnimator animator;
+	private final GLCanvas panel;
+	private final Dimension dim = new Dimension(1024, 768);
+
+	protected float winScale = 0.1f;
+	private static final float WIN_SCALE_MIN = 1e-3f;
+	private static final float WIN_SCALE_MAX = 100f;
+
+	private final TrianglesInstancedRendererHardcoded renderer;
+
+	public static void main(String[] args){
+		SwingUtilities.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				new ManyTriangleInstanced();
+			}
+		});
+	}
+
+	public ManyTriangleInstanced() {
+		renderer = new TrianglesInstancedRendererHardcoded(this);
+
+		frame = new JFrame(this.getClass().getSimpleName());
+		frame.setLayout(new BorderLayout());
+		frame.addWindowListener(new WindowAdapter() {
+			@Override
+			public void windowClosing(WindowEvent e) {
+				animator.stop();
+				System.exit(0);
+			}
+		});
+		panel = new GLCanvas(new GLCapabilities(GLProfile.get(GLProfile.GL4)));
+		panel.addGLEventListener(renderer);
+
+		frame.addMouseWheelListener(new MouseWheelListener() {
+
+			@Override
+			public void mouseWheelMoved(MouseWheelEvent e) {
+				int step = e.getWheelRotation();
+				if(step > 0) {
+					winScale *= 1.05;
+					if(winScale > WIN_SCALE_MAX) winScale = WIN_SCALE_MAX;
+				} else if(0 > step ) {
+					winScale *= 0.95;
+					if(winScale < WIN_SCALE_MIN) winScale = WIN_SCALE_MIN;
+				}
+			}
+		});
+
+		panel.setPreferredSize(dim);
+		frame.add(panel, BorderLayout.CENTER);
+		frame.pack();
+		frame.setVisible(true);
+		animator = new FPSAnimator(panel, 60, true);
+		animator.start();
+	}
+
+	@Override
+	public float getScale() {
+		return winScale;
+	}
+}
diff --git a/src/demos/instancedRendering/ManyTriangleInstancedWithShaderStateNewt.java b/src/demos/instancedRendering/ManyTriangleInstancedWithShaderStateNewt.java
new file mode 100644
index 0000000..63437dd
--- /dev/null
+++ b/src/demos/instancedRendering/ManyTriangleInstancedWithShaderStateNewt.java
@@ -0,0 +1,110 @@
+/**
+ * Copyright 2014 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``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 JogAmp Community 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.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package demos.instancedRendering;
+
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLProfile;
+import javax.swing.SwingUtilities;
+
+import com.jogamp.newt.event.MouseAdapter;
+import com.jogamp.newt.event.MouseEvent;
+import com.jogamp.newt.event.WindowAdapter;
+import com.jogamp.newt.event.WindowEvent;
+import com.jogamp.newt.opengl.GLWindow;
+import com.jogamp.opengl.util.FPSAnimator;
+
+public class ManyTriangleInstancedWithShaderStateNewt implements IInstancedRenderingView {
+
+	protected float winScale = 0.1f;
+	private static final float WIN_SCALE_MIN = 1e-3f;
+	private static final float WIN_SCALE_MAX = 100f;
+	private final FPSAnimator animator;
+
+	public static void main(String[] args) {
+		SwingUtilities.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				new ManyTriangleInstancedWithShaderStateNewt();
+			}
+		});
+	}
+
+	public ManyTriangleInstancedWithShaderStateNewt() {
+		TriangleInstancedRendererWithShaderState renderer = new TriangleInstancedRendererWithShaderState(this);
+
+		GLProfile prof = GLProfile.get(GLProfile.GL4);
+		GLCapabilities caps = new GLCapabilities(prof);
+		GLWindow glWindow = GLWindow.create(caps);
+
+		glWindow.addGLEventListener(renderer);
+
+		glWindow.addMouseListener(new MouseAdapter() {
+
+			@Override
+			public void mouseWheelMoved(MouseEvent e) {
+				float[] step = e.getRotation();
+				if(step[1] > 0) {
+					winScale *= 1.05;
+					if(winScale > WIN_SCALE_MAX) winScale = WIN_SCALE_MAX;
+				} else if(0 > step[1] ) {
+					winScale *= 0.95;
+					if(winScale < WIN_SCALE_MIN) winScale = WIN_SCALE_MIN;
+				}
+			}
+		});
+
+		glWindow.addWindowListener(new WindowAdapter() {
+
+			@Override
+			public void windowDestroyed(WindowEvent evt) {
+				if(animator.isAnimating()) animator.stop();
+			}
+
+			@Override
+			public void windowDestroyNotify(WindowEvent evt) {
+				animator.stop();
+			}
+		});
+
+    	animator = new FPSAnimator(glWindow, 60, true);
+    	animator.start();
+
+    	glWindow.setTitle("Instanced rendering experiment");
+        glWindow.setSize(1024, 768);
+        glWindow.setUndecorated(false);
+        glWindow.setPointerVisible(true);
+        glWindow.setVisible(true);
+	}
+
+	@Override
+	public float getScale() {
+		return winScale;
+	}
+
+}
diff --git a/src/demos/instancedRendering/ManyTriangleInstancedWithShaderStateSwing.java b/src/demos/instancedRendering/ManyTriangleInstancedWithShaderStateSwing.java
new file mode 100644
index 0000000..2111a08
--- /dev/null
+++ b/src/demos/instancedRendering/ManyTriangleInstancedWithShaderStateSwing.java
@@ -0,0 +1,103 @@
+/**
+ * Copyright 2014 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``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 JogAmp Community 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.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package demos.instancedRendering;
+
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.awt.event.MouseWheelEvent;
+import java.awt.event.MouseWheelListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLProfile;
+import javax.media.opengl.awt.GLCanvas;
+import javax.swing.JFrame;
+import javax.swing.SwingUtilities;
+
+import com.jogamp.opengl.util.FPSAnimator;
+
+public class ManyTriangleInstancedWithShaderStateSwing implements IInstancedRenderingView {
+	protected float winScale = 0.1f;
+	private static final float WIN_SCALE_MIN = 1e-3f;
+	private static final float WIN_SCALE_MAX = 100f;
+	private final FPSAnimator animator;
+
+	public static void main(String[] args) {
+		SwingUtilities.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				new ManyTriangleInstancedWithShaderStateSwing();
+			}
+		});
+	}
+
+	public ManyTriangleInstancedWithShaderStateSwing() {
+		TriangleInstancedRendererWithShaderState renderer = new TriangleInstancedRendererWithShaderState(this);
+
+		JFrame frame = new JFrame(this.getClass().getSimpleName());
+		frame.setLayout(new BorderLayout());
+		frame.addWindowListener(new WindowAdapter() {
+			@Override
+			public void windowClosing(WindowEvent e) {
+				animator.stop();
+				System.exit(0);
+			}
+		});
+		GLCanvas canvas = new GLCanvas(new GLCapabilities(GLProfile.get(GLProfile.GL4)));
+		canvas.addGLEventListener(renderer);
+
+		frame.addMouseWheelListener(new MouseWheelListener() {
+
+			@Override
+			public void mouseWheelMoved(MouseWheelEvent e) {
+				int step = e.getWheelRotation();
+				if(step > 0) {
+					winScale *= 1.05;
+					if(winScale > WIN_SCALE_MAX) winScale = WIN_SCALE_MAX;
+				} else if(0 > step ) {
+					winScale *= 0.95;
+					if(winScale < WIN_SCALE_MIN) winScale = WIN_SCALE_MIN;
+				}
+			}
+		});
+
+		canvas.setPreferredSize(new Dimension(1024, 768));
+		frame.add(canvas, BorderLayout.CENTER);
+		frame.pack();
+		frame.setVisible(true);
+		animator = new FPSAnimator(canvas, 60, true);
+		animator.start();
+	}
+
+	@Override
+	public float getScale() {
+		return winScale;
+	}
+}
diff --git a/src/demos/instancedRendering/TriangleInstancedRendererWithShaderState.java b/src/demos/instancedRendering/TriangleInstancedRendererWithShaderState.java
new file mode 100644
index 0000000..9ba0c8d
--- /dev/null
+++ b/src/demos/instancedRendering/TriangleInstancedRendererWithShaderState.java
@@ -0,0 +1,269 @@
+package com.jogamp.opengl.test.junit.jogl.demos.gl4;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.nio.FloatBuffer;
+import java.util.Random;
+
+import javax.media.opengl.DebugGL4;
+import javax.media.opengl.GL;
+import javax.media.opengl.GL2;
+import javax.media.opengl.GL2ES2;
+import javax.media.opengl.GL4;
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLEventListener;
+import javax.media.opengl.GLException;
+import javax.media.opengl.GLUniformData;
+import javax.media.opengl.TraceGL4;
+
+import com.jogamp.opengl.math.Matrix4;
+import com.jogamp.opengl.util.GLArrayDataClient;
+import com.jogamp.opengl.util.GLArrayDataServer;
+import com.jogamp.opengl.util.PMVMatrix;
+import com.jogamp.opengl.util.glsl.ShaderCode;
+import com.jogamp.opengl.util.glsl.ShaderProgram;
+import com.jogamp.opengl.util.glsl.ShaderState;
+
+public class TriangleInstancedRendererWithShaderState implements GLEventListener {
+	private float aspect;
+
+	private static final String shaderBasename = "triangles";
+//	private static final boolean useInterleaved = false;
+	private static final boolean useInterleaved = true;
+
+	private ShaderState st;
+	private PMVMatrix projectionMatrix;
+	private GLUniformData projectionMatrixUniform;
+	private GLUniformData transformMatrixUniform;
+
+	private GLArrayDataServer interleavedVBO;
+	private GLArrayDataClient verticesVBO;
+	private GLArrayDataClient colorsVBO;
+
+	private static final int NO_OF_INSTANCE = 30;
+	private final FloatBuffer triangleTransform = FloatBuffer.allocate(16 * NO_OF_INSTANCE);
+	private final Matrix4[] mat = new Matrix4[NO_OF_INSTANCE];
+	private final float[] rotationSpeed = new float[NO_OF_INSTANCE];
+
+	private static final boolean useTraceGL = false;
+	private PrintStream stream;
+	private final IInstancedRenderingView view;
+
+	private boolean isInitialized = false;
+
+	public TriangleInstancedRendererWithShaderState(IInstancedRenderingView view) {
+		this.view = view;
+
+		if(useTraceGL) {
+			try {
+				stream = new PrintStream(new FileOutputStream(new File("instanced-with-st.txt")));
+			} catch (IOException e1) {
+				e1.printStackTrace();
+			}
+		}
+
+		initTransform();
+	}
+
+	private void initTransform() {
+		Random rnd = new Random();
+		for(int i = 0; i < NO_OF_INSTANCE; i++) {
+			rotationSpeed[i] = 0.3f * rnd.nextFloat();
+			mat[i] = new Matrix4();
+			mat[i].loadIdentity();
+			float scale = 1f + 4 * rnd.nextFloat();
+			mat[i].scale(scale, scale, scale);
+			//setup initial position of each triangle
+			mat[i].translate(20f * rnd.nextFloat() - 10f,
+							 10f * rnd.nextFloat() -  5f,
+							 0f);
+		}
+	}
+
+	@Override
+	public void init(GLAutoDrawable drawable) {
+		GL4 gl = drawable.getGL().getGL4();
+		drawable.setGL(new DebugGL4(gl));
+		if(useTraceGL) {
+			drawable.setGL(new TraceGL4(gl, stream));
+		}
+
+		gl.glClearColor(1, 1, 1, 1); //white background
+//		gl.glClearColor(0, 0, 0, 1); //black background
+		gl.glClearDepth(1.0f);
+
+		System.err.println("Chosen GLCapabilities: " + drawable.getChosenGLCapabilities());
+		System.err.println("INIT GL IS: " + gl.getClass().getName());
+		System.err.println("GL_VENDOR: " + gl.glGetString(GL4.GL_VENDOR));
+		System.err.println("GL_RENDERER: " + gl.glGetString(GL4.GL_RENDERER));
+		System.err.println("GL_VERSION: " + gl.glGetString(GL4.GL_VERSION));
+
+		initShader(gl);
+        projectionMatrix = new PMVMatrix();
+		projectionMatrixUniform = new GLUniformData("mgl_PMatrix", 4, 4, projectionMatrix.glGetPMatrixf());
+		st.ownUniform(projectionMatrixUniform);
+        if(!st.uniform(gl, projectionMatrixUniform)) {
+            throw new GLException("Error setting mgl_PMatrix in shader: " + st);
+        }
+
+        transformMatrixUniform =  new GLUniformData("mgl_MVMatrix", 4, 4, triangleTransform);
+
+        st.ownUniform(transformMatrixUniform);
+        if(!st.uniform(gl, transformMatrixUniform)) {
+            throw new GLException("Error setting mgl_MVMatrix in shader: " + st);
+        }
+
+        if(useInterleaved) {
+        	initVBO_interleaved(gl);
+        } else {
+        	initVBO_nonInterleaved(gl);
+        }
+
+		isInitialized = true;
+	}
+
+	@Override
+	public void display(GLAutoDrawable drawable) {
+		if(!isInitialized ) return;
+
+		GL4 gl = drawable.getGL().getGL4();
+		gl.glClear(GL4.GL_COLOR_BUFFER_BIT | GL4.GL_DEPTH_BUFFER_BIT);
+
+		st.useProgram(gl, true);
+		projectionMatrix.glMatrixMode(GL2.GL_PROJECTION);
+		projectionMatrix.glPushMatrix();
+
+		float winScale = 0.1f;
+		if(view != null) winScale = view.getScale();
+		projectionMatrix.glScalef(winScale, winScale, winScale);
+		projectionMatrix.update();
+		st.uniform(gl, projectionMatrixUniform);
+		projectionMatrix.glPopMatrix();
+
+		generateTriangleTransform();
+		st.uniform(gl, transformMatrixUniform);
+		if(useInterleaved) {
+			interleavedVBO.enableBuffer(gl, true);
+		} else {
+			verticesVBO.enableBuffer(gl, true);
+			colorsVBO.enableBuffer(gl, true);
+		}
+		//gl.glVertexAttribDivisor() is not required since each instance has the same attribute (color).
+		gl.glDrawArraysInstanced(GL4.GL_TRIANGLES, 0, 3, NO_OF_INSTANCE);
+		if(useInterleaved) {
+			interleavedVBO.enableBuffer(gl, false);
+		} else {
+			verticesVBO.enableBuffer(gl, false);
+			colorsVBO.enableBuffer(gl, false);
+		}
+		st.useProgram(gl, false);
+	}
+
+	@Override
+	public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
+		GL4 gl3 = drawable.getGL().getGL4();
+		gl3.glViewport(0, 0, width, height);
+		aspect = (float) width / (float) height;
+
+		projectionMatrix.glMatrixMode(GL2.GL_PROJECTION);
+		projectionMatrix.glLoadIdentity();
+		projectionMatrix.gluPerspective(45, aspect, 0.001f, 20f);
+		projectionMatrix.gluLookAt(0, 0, -10, 0, 0, 0, 0, 1, 0);
+	}
+
+	@Override
+	public void dispose(GLAutoDrawable drawable){
+		GL4 gl = drawable.getGL().getGL4();
+		st.destroy(gl);
+	}
+
+	private void generateTriangleTransform() {
+		triangleTransform.clear();
+		for(int i = 0; i < NO_OF_INSTANCE; i++) {
+			mat[i].rotate(rotationSpeed[i], 0, 0, 1);
+			triangleTransform.put(mat[i].getMatrix());
+		}
+		triangleTransform.rewind();
+	}
+
+	private void initVBO_nonInterleaved(GL4 gl) {
+		int VERTEX_COUNT = 3;
+
+        verticesVBO = GLArrayDataClient.createGLSL("mgl_Vertex", 3, GL4.GL_FLOAT, false, VERTEX_COUNT);
+        FloatBuffer verticeBuf = (FloatBuffer)verticesVBO.getBuffer();
+        verticeBuf.put(vertices);
+        verticesVBO.seal(gl, true);
+
+        colorsVBO = GLArrayDataClient.createGLSL("mgl_Color",  4, GL4.GL_FLOAT, false, VERTEX_COUNT);
+        FloatBuffer colorBuf = (FloatBuffer)colorsVBO.getBuffer();
+        colorBuf.put(colors);
+        colorsVBO.seal(gl, true);
+
+        verticesVBO.enableBuffer(gl, false);
+        colorsVBO.enableBuffer(gl, false);
+
+        st.ownAttribute(verticesVBO, true);
+        st.ownAttribute(colorsVBO, true);
+		st.useProgram(gl, false);
+	}
+
+	private void initVBO_interleaved(GL4 gl) {
+		int VERTEX_COUNT = 3;
+		interleavedVBO = GLArrayDataServer.createGLSLInterleaved(3 + 4, GL.GL_FLOAT, false, VERTEX_COUNT, GL.GL_STATIC_DRAW);
+        interleavedVBO.addGLSLSubArray("mgl_Vertex", 3, GL.GL_ARRAY_BUFFER);
+        interleavedVBO.addGLSLSubArray("mgl_Color",  4, GL.GL_ARRAY_BUFFER);
+
+        FloatBuffer ib = (FloatBuffer)interleavedVBO.getBuffer();
+
+        for(int i = 0; i < VERTEX_COUNT; i++) {
+            ib.put(vertices,  i*3, 3);
+            ib.put(colors,    i*4, 4);
+        }
+        interleavedVBO.seal(gl, true);
+        interleavedVBO.enableBuffer(gl, false);
+        st.ownAttribute(interleavedVBO, true);
+		st.useProgram(gl, false);
+	}
+
+    private void initShader(GL4 gl) {
+        // Create & Compile the shader objects
+        ShaderCode vp0 = ShaderCode.create(gl, GL2ES2.GL_VERTEX_SHADER, this.getClass(),
+                                            "shader", "shader/bin", shaderBasename, true);
+        ShaderCode fp0 = ShaderCode.create(gl, GL2ES2.GL_FRAGMENT_SHADER, this.getClass(),
+                                            "shader", "shader/bin", shaderBasename, true);
+        vp0.replaceInShaderSource("NO_OF_INSTANCE", String.valueOf(NO_OF_INSTANCE));
+
+        vp0.defaultShaderCustomization(gl, true, true);
+        fp0.defaultShaderCustomization(gl, true, true);
+
+        //vp0.dumpShaderSource(System.out);
+
+        // Create & Link the shader program
+        ShaderProgram sp = new ShaderProgram();
+        sp.add(vp0);
+        sp.add(fp0);
+        if(!sp.link(gl, System.err)) {
+            throw new GLException("Couldn't link program: "+sp);
+        }
+
+        // Let's manage all our states using ShaderState.
+        st = new ShaderState();
+        st.attachShaderProgram(gl, sp, true);
+    }
+
+
+	private static final float[] vertices = {
+			1.0f, 0.0f, 0,
+			-0.5f, 0.866f, 0,
+			-0.5f, -0.866f, 0
+	};
+
+	private final float[] colors = {
+			1.0f, 0.0f, 0.0f, 1.0f,
+			0.0f, 1.0f, 0.0f, 1.0f,
+			0f, 0f, 1.0f, 1f
+	};
+
+}
diff --git a/src/demos/instancedRendering/TrianglesInstancedRendererHardcoded.java b/src/demos/instancedRendering/TrianglesInstancedRendererHardcoded.java
new file mode 100644
index 0000000..7396700
--- /dev/null
+++ b/src/demos/instancedRendering/TrianglesInstancedRendererHardcoded.java
@@ -0,0 +1,285 @@
+package com.jogamp.opengl.test.junit.jogl.demos.gl4;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.nio.FloatBuffer;
+import java.util.Random;
+
+import javax.media.opengl.DebugGL4;
+import javax.media.opengl.GL2;
+import javax.media.opengl.GL4;
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLEventListener;
+import javax.media.opengl.TraceGL4;
+
+import com.jogamp.common.nio.Buffers;
+import com.jogamp.opengl.math.Matrix4;
+import com.jogamp.opengl.util.PMVMatrix;
+
+public class TrianglesInstancedRendererHardcoded implements GLEventListener {
+	private float aspect;
+
+	private int shaderProgram;
+	private int vertShader;
+	private int fragShader;
+	private int projectionMatrixLocation;
+	private int transformMatrixLocation;
+	private static final int locPos = 1;
+	private static final int locCol = 2;
+	private PMVMatrix projectionMatrix;
+
+	private static final int NO_OF_INSTANCE = 30;
+	private final FloatBuffer triangleTransform = FloatBuffer.allocate(16 * NO_OF_INSTANCE);
+	private final Matrix4[] mat = new Matrix4[NO_OF_INSTANCE];
+	private final float[] rotationSpeed = new float[NO_OF_INSTANCE];
+
+	private int[] vbo;
+	private int[] vao;
+	private PrintStream stream;
+	private final IInstancedRenderingView view;
+
+	private static final boolean useTraceGL = false;
+
+	public TrianglesInstancedRendererHardcoded(IInstancedRenderingView view) {
+		this.view = view;
+		initTransform();
+
+		if(useTraceGL) {
+			try {
+				stream = new PrintStream(new FileOutputStream(new File("instanced.txt")));
+			} catch (IOException e1) {
+				e1.printStackTrace();
+			}
+		}
+	}
+
+	@Override
+	public void init(GLAutoDrawable drawable) {
+		GL4 gl = drawable.getGL().getGL4();
+		drawable.setGL(new DebugGL4(gl));
+		if(useTraceGL) {
+			drawable.setGL(new TraceGL4(gl, stream));
+		}
+
+		gl.glClearColor(1, 1, 1, 1); //white background
+		//	gl.glClearColor(0, 0, 0, 1); //black background
+		gl.glClearDepth(1.0f);
+
+		System.err.println("Chosen GLCapabilities: " + drawable.getChosenGLCapabilities());
+		System.err.println("INIT GL IS: " + gl.getClass().getName());
+		System.err.println("GL_VENDOR: " + gl.glGetString(GL4.GL_VENDOR));
+		System.err.println("GL_RENDERER: " + gl.glGetString(GL4.GL_RENDERER));
+		System.err.println("GL_VERSION: " + gl.glGetString(GL4.GL_VERSION));
+
+		try {
+			initShaders(gl);
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		initVBO(gl);
+	}
+
+	@Override
+	public void display(GLAutoDrawable drawable) {
+
+		GL4 gl = drawable.getGL().getGL4();
+		gl.glClear(GL4.GL_COLOR_BUFFER_BIT | GL4.GL_DEPTH_BUFFER_BIT);
+
+		gl.glUseProgram(shaderProgram);
+
+		projectionMatrix.glMatrixMode(GL2.GL_PROJECTION);
+
+		projectionMatrix.glPushMatrix();
+		float winScale = 0.1f;
+		if(view != null) {
+			winScale = view.getScale();
+		}
+		projectionMatrix.glScalef(winScale, winScale, winScale);
+		projectionMatrix.update();
+		gl.glUniformMatrix4fv(projectionMatrixLocation, 1, false, projectionMatrix.glGetPMatrixf());
+		projectionMatrix.glPopMatrix();
+		generateTriangleTransform();
+		gl.glUniformMatrix4fv(transformMatrixLocation, NO_OF_INSTANCE, false, triangleTransform);
+
+		gl.glBindVertexArray(vao[0]);
+		gl.glDrawArraysInstanced(GL4.GL_TRIANGLES, 0, 3, NO_OF_INSTANCE);
+		gl.glBindVertexArray(0);
+		gl.glUseProgram(0);
+	}
+
+	@Override
+	public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
+		System.out.println("Window resized to width=" + width + " height=" + height);
+		GL4 gl3 = drawable.getGL().getGL4();
+		gl3.glViewport(0, 0, width, height);
+		aspect = (float) width / (float) height;
+
+		projectionMatrix = new PMVMatrix();
+		projectionMatrix.glMatrixMode(GL2.GL_PROJECTION);
+		projectionMatrix.glLoadIdentity();
+		projectionMatrix.gluPerspective(45, aspect, 0.001f, 20f);
+		projectionMatrix.gluLookAt(0, 0, -10, 0, 0, 0, 0, 1, 0);
+	}
+
+	@Override
+	public void dispose(GLAutoDrawable drawable){
+		GL4 gl = drawable.getGL().getGL4();
+		gl.glUseProgram(0);
+		gl.glDeleteBuffers(2, vbo, 0);
+		gl.glDetachShader(shaderProgram, vertShader);
+		gl.glDeleteShader(vertShader);
+		gl.glDetachShader(shaderProgram, fragShader);
+		gl.glDeleteShader(fragShader);
+		gl.glDeleteProgram(shaderProgram);
+	}
+
+	private void initTransform() {
+		Random rnd = new Random();
+		for(int i = 0; i < NO_OF_INSTANCE; i++) {
+			rotationSpeed[i] = 0.3f * rnd.nextFloat();
+			mat[i] = new Matrix4();
+			mat[i].loadIdentity();
+			float scale = 1f + 4 * rnd.nextFloat();
+			mat[i].scale(scale, scale, scale);
+			//setup initial position of each triangle
+			mat[i].translate(20f * rnd.nextFloat() - 10f,
+							 10f * rnd.nextFloat() -  5f,
+							 0f);
+		}
+	}
+
+	private void initVBO(GL4 gl) {
+		FloatBuffer interleavedBuffer = Buffers.newDirectFloatBuffer(vertices.length + colors.length);
+		for(int i = 0; i < vertices.length/3; i++) {
+			for(int j = 0; j < 3; j++) {
+				interleavedBuffer.put(vertices[i*3 + j]);
+			}
+			for(int j = 0; j < 4; j++) {
+				interleavedBuffer.put(colors[i*4 + j]);
+			}
+		}
+		interleavedBuffer.flip();
+
+		vao = new int[1];
+		gl.glGenVertexArrays(1, vao , 0);
+		gl.glBindVertexArray(vao[0]);
+		vbo = new int[1];
+		gl.glGenBuffers(1, vbo, 0);
+		gl.glBindBuffer(GL4.GL_ARRAY_BUFFER, vbo[0]);
+		gl.glBufferData(GL4.GL_ARRAY_BUFFER, interleavedBuffer.limit() * Buffers.SIZEOF_FLOAT, interleavedBuffer, GL4.GL_STATIC_DRAW);
+
+		gl.glEnableVertexAttribArray(locPos);
+		gl.glEnableVertexAttribArray(locCol);
+
+		int stride = Buffers.SIZEOF_FLOAT * (3+4);
+		gl.glVertexAttribPointer( locPos, 3, GL4.GL_FLOAT, false, stride, 0);
+		gl.glVertexAttribPointer( locCol, 4, GL4.GL_FLOAT, false, stride, Buffers.SIZEOF_FLOAT * 3);
+	}
+
+	private void initShaders(GL4 gl) throws IOException {
+		vertShader = gl.glCreateShader(GL4.GL_VERTEX_SHADER);
+		fragShader = gl.glCreateShader(GL4.GL_FRAGMENT_SHADER);
+
+		String[] vlines = new String[] { vertexShaderString };
+		int[] vlengths = new int[] { vlines[0].length() };
+		gl.glShaderSource(vertShader, vlines.length, vlines, vlengths, 0);
+		gl.glCompileShader(vertShader);
+
+		int[] compiled = new int[1];
+		gl.glGetShaderiv(vertShader, GL4.GL_COMPILE_STATUS, compiled, 0);
+		if(compiled[0] != 0) {
+			System.out.println("Vertex shader compiled");
+		} else {
+			int[] logLength = new int[1];
+			gl.glGetShaderiv(vertShader, GL4.GL_INFO_LOG_LENGTH, logLength, 0);
+
+			byte[] log = new byte[logLength[0]];
+			gl.glGetShaderInfoLog(vertShader, logLength[0], (int[])null, 0, log, 0);
+
+			System.err.println("Error compiling the vertex shader: " + new String(log));
+			System.exit(1);
+		}
+
+		String[] flines = new String[] { fragmentShaderString };
+		int[] flengths = new int[] { flines[0].length() };
+		gl.glShaderSource(fragShader, flines.length, flines, flengths, 0);
+		gl.glCompileShader(fragShader);
+
+		gl.glGetShaderiv(fragShader, GL4.GL_COMPILE_STATUS, compiled, 0);
+		if(compiled[0] != 0){
+			System.out.println("Fragment shader compiled.");
+		} else {
+			int[] logLength = new int[1];
+			gl.glGetShaderiv(fragShader, GL4.GL_INFO_LOG_LENGTH, logLength, 0);
+
+			byte[] log = new byte[logLength[0]];
+			gl.glGetShaderInfoLog(fragShader, logLength[0], (int[])null, 0, log, 0);
+
+			System.err.println("Error compiling the fragment shader: " + new String(log));
+			System.exit(1);
+		}
+
+		shaderProgram = gl.glCreateProgram();
+		gl.glAttachShader(shaderProgram, vertShader);
+		gl.glAttachShader(shaderProgram, fragShader);
+
+		gl.glBindAttribLocation(shaderProgram, locPos, "mgl_Vertex");
+		gl.glBindAttribLocation(shaderProgram, locCol, "mgl_Color");
+
+		gl.glLinkProgram(shaderProgram);
+
+		projectionMatrixLocation = gl.glGetUniformLocation(shaderProgram, "mgl_PMatrix");
+		System.out.println("projectionMatrixLocation:" + projectionMatrixLocation);
+		transformMatrixLocation = gl.glGetUniformLocation(shaderProgram, "mgl_MVMatrix");
+		System.out.println("transformMatrixLocation:" + transformMatrixLocation);
+	}
+
+	private void generateTriangleTransform() {
+		triangleTransform.clear();
+		for(int i = 0; i < NO_OF_INSTANCE; i++) {
+			//		mat[i].translate(0.1f, 0.1f, 0);
+			mat[i].rotate(rotationSpeed[i], 0, 0, 1);
+			//		mat[i].translate(-0.1f, -0.1f, 0);
+			triangleTransform.put(mat[i].getMatrix());
+		}
+		triangleTransform.flip();
+	}
+
+	private final String vertexShaderString =
+			"#version 410 \n" +
+					"\n" +
+					"uniform mat4 mgl_PMatrix; \n" +
+					"uniform mat4 mgl_MVMatrix[" + NO_OF_INSTANCE + "]; \n" +
+					"in vec3  mgl_Vertex; \n" +
+					"in vec4  mgl_Color; \n" +
+					"out vec4 frontColor; \n" +
+					"void main(void) \n" +
+					"{ \n" +
+					"  frontColor = mgl_Color; \n" +
+					"  gl_Position = mgl_PMatrix * mgl_MVMatrix[gl_InstanceID] * vec4(mgl_Vertex, 1);" +
+					"} ";
+
+	private final String fragmentShaderString =
+			"#version 410\n" +
+					"\n" +
+					"in vec4    frontColor; \n" +
+					"out vec4    mgl_FragColor; \n" +
+					"void main (void) \n" +
+					"{ \n" +
+					"  mgl_FragColor = frontColor; \n" +
+					"} ";
+
+	private final float[] vertices = {
+			1.0f, 0.0f, 0,
+			-0.5f, 0.866f, 0,
+			-0.5f, -0.866f, 0
+	};
+
+	private final float[] colors = {
+			1.0f, 0.0f, 0.0f, 1.0f,
+			0.0f, 1.0f, 0.0f, 1.0f,
+			0f, 0f, 1.0f, 1f
+	};
+}
diff --git a/src/demos/instancedRendering/shader/triangles.fp b/src/demos/instancedRendering/shader/triangles.fp
new file mode 100644
index 0000000..005884a
--- /dev/null
+++ b/src/demos/instancedRendering/shader/triangles.fp
@@ -0,0 +1,15 @@
+// Copyright 2014 JogAmp Community. All rights reserved.
+
+#if __VERSION__ >= 130
+  #define varying in
+  out vec4 mgl_FragColor;
+  #define texture2D texture
+#else
+  #define mgl_FragColor gl_FragColor   
+#endif
+
+varying vec4    frontColor;
+
+void main (void) {
+	mgl_FragColor = frontColor; 
+} 
diff --git a/src/demos/instancedRendering/shader/triangles.vp b/src/demos/instancedRendering/shader/triangles.vp
new file mode 100644
index 0000000..91cc6ef
--- /dev/null
+++ b/src/demos/instancedRendering/shader/triangles.vp
@@ -0,0 +1,17 @@
+// Copyright 2014 JogAmp Community. All rights reserved.
+
+#if __VERSION__ >= 130
+  #define attribute in
+  #define varying out
+#endif
+
+uniform mat4 mgl_PMatrix;
+uniform mat4 mgl_MVMatrix[NO_OF_INSTANCE];
+attribute vec3  mgl_Vertex; 
+attribute vec4  mgl_Color; 
+varying vec4    frontColor;
+ 
+void main(void) { 
+  frontColor = mgl_Color; 
+  gl_Position = mgl_PMatrix * mgl_MVMatrix[gl_InstanceID] * vec4(mgl_Vertex, 1); 
+}