diff --git a/samples/ApiDemos/AndroidManifest.xml b/samples/ApiDemos/AndroidManifest.xml
index 98db82c42..f44199a79 100644
--- a/samples/ApiDemos/AndroidManifest.xml
+++ b/samples/ApiDemos/AndroidManifest.xml
@@ -1407,6 +1407,15 @@
             </intent-filter>
         </activity>
         
+        <activity android:name=".graphics.MatrixPaletteActivity"
+                android:label="Graphics/OpenGL ES/Matrix Palette Skinning"
+                android:configChanges="orientation|keyboardHidden">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.SAMPLE_CODE" />
+            </intent-filter>
+        </activity>
+        
         <activity android:name=".graphics.TranslucentGLSurfaceViewActivity"
                 android:label="Graphics/OpenGL ES/Translucent GLSurfaceView"
                 android:theme="@style/Theme.Translucent"
diff --git a/samples/ApiDemos/src/com/example/android/apis/graphics/MatrixPaletteActivity.java b/samples/ApiDemos/src/com/example/android/apis/graphics/MatrixPaletteActivity.java
new file mode 100644
index 000000000..520e0e1c8
--- /dev/null
+++ b/samples/ApiDemos/src/com/example/android/apis/graphics/MatrixPaletteActivity.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.apis.graphics;
+
+import android.app.Activity;
+import android.opengl.GLSurfaceView;
+import android.os.Bundle;
+
+/**
+ * This sample shows how to implement a Matrix Palette
+ */
+public class MatrixPaletteActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mGLSurfaceView = new GLSurfaceView(this);
+        mGLSurfaceView.setRenderer(new MatrixPaletteRenderer(this));
+        setContentView(mGLSurfaceView);
+    }
+
+    @Override
+    protected void onResume() {
+        // Ideally a game should implement onResume() and onPause()
+        // to take appropriate action when the activity looses focus
+        super.onResume();
+        mGLSurfaceView.onResume();
+    }
+
+    @Override
+    protected void onPause() {
+        // Ideally a game should implement onResume() and onPause()
+        // to take appropriate action when the activity looses focus
+        super.onPause();
+        mGLSurfaceView.onPause();
+    }
+
+    private GLSurfaceView mGLSurfaceView;
+}
diff --git a/samples/ApiDemos/src/com/example/android/apis/graphics/MatrixPaletteRenderer.java b/samples/ApiDemos/src/com/example/android/apis/graphics/MatrixPaletteRenderer.java
new file mode 100644
index 000000000..e0e2db166
--- /dev/null
+++ b/samples/ApiDemos/src/com/example/android/apis/graphics/MatrixPaletteRenderer.java
@@ -0,0 +1,408 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.apis.graphics;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.CharBuffer;
+import java.nio.FloatBuffer;
+
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL;
+import javax.microedition.khronos.opengles.GL10;
+import javax.microedition.khronos.opengles.GL11;
+import javax.microedition.khronos.opengles.GL11Ext;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.opengl.GLSurfaceView;
+import android.opengl.GLU;
+import android.opengl.GLUtils;
+import android.os.SystemClock;
+
+import com.example.android.apis.R;
+
+public class MatrixPaletteRenderer implements GLSurfaceView.Renderer{
+    private Context mContext;
+    private Grid mGrid;
+    private int mTextureID;
+
+    /** A grid is a topologically rectangular array of vertices.
+     *
+     * This grid class is customized for the vertex data required for this
+     * example.
+     *
+     * The vertex and index data are held in VBO objects because on most
+     * GPUs VBO objects are the fastest way of rendering static vertex
+     * and index data.
+     *
+     */
+
+    private static class Grid {
+        // Size of vertex data elements in bytes:
+        final static int FLOAT_SIZE = 4;
+        final static int CHAR_SIZE = 2;
+
+        // Vertex structure:
+        // float x, y, z;
+        // float u, v;
+        // float weight0, weight1;
+        // byte palette0, palette1, pad0, pad1;
+
+        final static int VERTEX_SIZE = 8 * FLOAT_SIZE;
+        final static int VERTEX_TEXTURE_BUFFER_INDEX_OFFSET = 3;
+        final static int VERTEX_WEIGHT_BUFFER_INDEX_OFFSET = 5;
+        final static int VERTEX_PALETTE_INDEX_OFFSET = 7 * FLOAT_SIZE;
+
+        private int mVertexBufferObjectId;
+        private int mElementBufferObjectId;
+
+        // These buffers are used to hold the vertex and index data while
+        // constructing the grid. Once createBufferObjects() is called
+        // the buffers are nulled out to save memory.
+
+        private ByteBuffer mVertexByteBuffer;
+        private FloatBuffer mVertexBuffer;
+        private CharBuffer mIndexBuffer;
+
+        private int mW;
+        private int mH;
+        private int mIndexCount;
+
+        public Grid(int w, int h) {
+            if (w < 0 || w >= 65536) {
+                throw new IllegalArgumentException("w");
+            }
+            if (h < 0 || h >= 65536) {
+                throw new IllegalArgumentException("h");
+            }
+            if (w * h >= 65536) {
+                throw new IllegalArgumentException("w * h >= 65536");
+            }
+
+            mW = w;
+            mH = h;
+            int size = w * h;
+
+            mVertexByteBuffer = ByteBuffer.allocateDirect(VERTEX_SIZE * size)
+                .order(ByteOrder.nativeOrder());
+            mVertexBuffer = mVertexByteBuffer.asFloatBuffer();
+
+            int quadW = mW - 1;
+            int quadH = mH - 1;
+            int quadCount = quadW * quadH;
+            int indexCount = quadCount * 6;
+            mIndexCount = indexCount;
+            mIndexBuffer = ByteBuffer.allocateDirect(CHAR_SIZE * indexCount)
+                .order(ByteOrder.nativeOrder()).asCharBuffer();
+
+            /*
+             * Initialize triangle list mesh.
+             *
+             *     [0]-----[  1] ...
+             *      |    /   |
+             *      |   /    |
+             *      |  /     |
+             *     [w]-----[w+1] ...
+             *      |       |
+             *
+             */
+
+            {
+                int i = 0;
+                for (int y = 0; y < quadH; y++) {
+                    for (int x = 0; x < quadW; x++) {
+                        char a = (char) (y * mW + x);
+                        char b = (char) (y * mW + x + 1);
+                        char c = (char) ((y + 1) * mW + x);
+                        char d = (char) ((y + 1) * mW + x + 1);
+
+                        mIndexBuffer.put(i++, a);
+                        mIndexBuffer.put(i++, c);
+                        mIndexBuffer.put(i++, b);
+
+                        mIndexBuffer.put(i++, b);
+                        mIndexBuffer.put(i++, c);
+                        mIndexBuffer.put(i++, d);
+                    }
+                }
+            }
+
+        }
+
+        public void set(int i, int j, float x, float y, float z,
+                float u, float v,
+                float w0, float w1,
+                int p0, int p1) {
+            if (i < 0 || i >= mW) {
+                throw new IllegalArgumentException("i");
+            }
+            if (j < 0 || j >= mH) {
+                throw new IllegalArgumentException("j");
+            }
+
+            if (w0 + w1 != 1.0f) {
+                throw new IllegalArgumentException("Weights must add up to 1.0f");
+            }
+
+            int index = mW * j + i;
+
+            mVertexBuffer.position(index * VERTEX_SIZE / FLOAT_SIZE);
+            mVertexBuffer.put(x);
+            mVertexBuffer.put(y);
+            mVertexBuffer.put(z);
+            mVertexBuffer.put(u);
+            mVertexBuffer.put(v);
+            mVertexBuffer.put(w0);
+            mVertexBuffer.put(w1);
+
+            mVertexByteBuffer.position(index * VERTEX_SIZE + VERTEX_PALETTE_INDEX_OFFSET);
+            mVertexByteBuffer.put((byte) p0);
+            mVertexByteBuffer.put((byte) p1);
+        }
+
+        public void createBufferObjects(GL gl) {
+            // Generate a the vertex and element buffer IDs
+            int[] vboIds = new int[2];
+            GL11 gl11 = (GL11) gl;
+            gl11.glGenBuffers(2, vboIds, 0);
+            mVertexBufferObjectId = vboIds[0];
+            mElementBufferObjectId = vboIds[1];
+
+            // Upload the vertex data
+            gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, mVertexBufferObjectId);
+            mVertexByteBuffer.position(0);
+            gl11.glBufferData(GL11.GL_ARRAY_BUFFER, mVertexByteBuffer.capacity(), mVertexByteBuffer, GL11.GL_STATIC_DRAW);
+
+            gl11.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, mElementBufferObjectId);
+            mIndexBuffer.position(0);
+            gl11.glBufferData(GL11.GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer.capacity() * CHAR_SIZE, mIndexBuffer, GL11.GL_STATIC_DRAW);
+
+            // We don't need the in-memory data any more
+            mVertexBuffer = null;
+            mVertexByteBuffer = null;
+            mIndexBuffer = null;
+        }
+
+        public void draw(GL10 gl) {
+            GL11 gl11 = (GL11) gl;
+            GL11Ext gl11Ext = (GL11Ext) gl;
+
+            gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
+
+            gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, mVertexBufferObjectId);
+            gl11.glVertexPointer(3, GL10.GL_FLOAT, VERTEX_SIZE, 0);
+            gl11.glTexCoordPointer(2, GL10.GL_FLOAT, VERTEX_SIZE, VERTEX_TEXTURE_BUFFER_INDEX_OFFSET * FLOAT_SIZE);
+
+            gl.glEnableClientState(GL11Ext.GL_MATRIX_INDEX_ARRAY_OES);
+            gl.glEnableClientState(GL11Ext.GL_WEIGHT_ARRAY_OES);
+
+            gl11Ext.glWeightPointerOES(2, GL10.GL_FLOAT, VERTEX_SIZE, VERTEX_WEIGHT_BUFFER_INDEX_OFFSET  * FLOAT_SIZE);
+            gl11Ext.glMatrixIndexPointerOES(2, GL10.GL_UNSIGNED_BYTE, VERTEX_SIZE, VERTEX_PALETTE_INDEX_OFFSET );
+
+            gl11.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, mElementBufferObjectId);
+            gl11.glDrawElements(GL10.GL_TRIANGLES, mIndexCount, GL10.GL_UNSIGNED_SHORT, 0);
+            gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
+            gl.glDisableClientState(GL11Ext.GL_MATRIX_INDEX_ARRAY_OES);
+            gl.glDisableClientState(GL11Ext.GL_WEIGHT_ARRAY_OES);
+            gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, 0);
+            gl11.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, 0);
+        }
+    }
+
+    public MatrixPaletteRenderer(Context context) {
+        mContext = context;
+    }
+
+    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
+        /*
+         * By default, OpenGL enables features that improve quality
+         * but reduce performance. One might want to tweak that
+         * especially on software renderer.
+         */
+        gl.glDisable(GL10.GL_DITHER);
+
+        /*
+         * Some one-time OpenGL initialization can be made here
+         * probably based on features of this particular context
+         */
+        gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT,
+                GL10.GL_FASTEST);
+
+        gl.glClearColor(.5f, .5f, .5f, 1);
+        gl.glShadeModel(GL10.GL_SMOOTH);
+        gl.glEnable(GL10.GL_DEPTH_TEST);
+        gl.glEnable(GL10.GL_TEXTURE_2D);
+
+        /*
+         * Create our texture. This has to be done each time the
+         * surface is created.
+         */
+
+        int[] textures = new int[1];
+        gl.glGenTextures(1, textures, 0);
+
+        mTextureID = textures[0];
+        gl.glBindTexture(GL10.GL_TEXTURE_2D, mTextureID);
+
+        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER,
+                GL10.GL_NEAREST);
+        gl.glTexParameterf(GL10.GL_TEXTURE_2D,
+                GL10.GL_TEXTURE_MAG_FILTER,
+                GL10.GL_LINEAR);
+
+        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S,
+                GL10.GL_CLAMP_TO_EDGE);
+        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T,
+                GL10.GL_CLAMP_TO_EDGE);
+
+        gl.glTexEnvf(GL10.GL_TEXTURE_ENV, GL10.GL_TEXTURE_ENV_MODE,
+                GL10.GL_REPLACE);
+
+        InputStream is = mContext.getResources()
+                .openRawResource(R.raw.robot);
+        Bitmap bitmap;
+        try {
+            bitmap = BitmapFactory.decodeStream(is);
+        } finally {
+            try {
+                is.close();
+            } catch(IOException e) {
+                // Ignore.
+            }
+        }
+
+        GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
+        bitmap.recycle();
+
+        mGrid = generateWeightedGrid(gl);
+    }
+
+    public void onDrawFrame(GL10 gl) {
+        /*
+         * By default, OpenGL enables features that improve quality
+         * but reduce performance. One might want to tweak that
+         * especially on software renderer.
+         */
+        gl.glDisable(GL10.GL_DITHER);
+
+        gl.glTexEnvx(GL10.GL_TEXTURE_ENV, GL10.GL_TEXTURE_ENV_MODE,
+                GL10.GL_MODULATE);
+
+        /*
+         * Usually, the first thing one might want to do is to clear
+         * the screen. The most efficient way of doing this is to use
+         * glClear().
+         */
+
+        gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
+
+        gl.glEnable(GL10.GL_DEPTH_TEST);
+
+        gl.glEnable(GL10.GL_CULL_FACE);
+
+        /*
+         * Now we're ready to draw some 3D objects
+         */
+
+        gl.glMatrixMode(GL10.GL_MODELVIEW);
+        gl.glLoadIdentity();
+
+        GLU.gluLookAt(gl, 0, 0, -5, 0f, 0f, 0f, 0f, 1.0f, 0.0f);
+
+        gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
+        gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
+
+        gl.glActiveTexture(GL10.GL_TEXTURE0);
+        gl.glBindTexture(GL10.GL_TEXTURE_2D, mTextureID);
+        gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S,
+                GL10.GL_REPEAT);
+        gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T,
+                GL10.GL_REPEAT);
+
+        long time = SystemClock.uptimeMillis() % 4000L;
+
+        // Rock back and forth
+        double animationUnit = ((double) time) / 4000;
+        float unitAngle = (float) Math.cos(animationUnit * 2 * Math.PI);
+        float angle = unitAngle * 135f;
+
+        gl.glEnable(GL11Ext.GL_MATRIX_PALETTE_OES);
+        gl.glMatrixMode(GL11Ext.GL_MATRIX_PALETTE_OES);
+
+        GL11Ext gl11Ext = (GL11Ext) gl;
+
+        // matrix 0: no transformation
+        gl11Ext.glCurrentPaletteMatrixOES(0);
+        gl11Ext.glLoadPaletteFromModelViewMatrixOES();
+
+
+        // matrix 1: rotate by "angle"
+        gl.glRotatef(angle, 0, 0, 1.0f);
+
+        gl11Ext.glCurrentPaletteMatrixOES(1);
+        gl11Ext.glLoadPaletteFromModelViewMatrixOES();
+
+        mGrid.draw(gl);
+
+        gl.glDisable(GL11Ext.GL_MATRIX_PALETTE_OES);
+    }
+
+    public void onSurfaceChanged(GL10 gl, int w, int h) {
+        gl.glViewport(0, 0, w, h);
+
+        /*
+        * Set our projection matrix. This doesn't have to be done
+        * each time we draw, but usually a new projection needs to
+        * be set when the viewport is resized.
+        */
+
+        float ratio = (float) w / h;
+        gl.glMatrixMode(GL10.GL_PROJECTION);
+        gl.glLoadIdentity();
+        gl.glFrustumf(-ratio, ratio, -1, 1, 3, 7);
+    }
+
+    private Grid generateWeightedGrid(GL gl) {
+        final int uSteps = 20;
+        final int vSteps = 20;
+
+        float radius = 0.25f;
+        float height = 2.0f;
+        Grid grid = new Grid(uSteps + 1, vSteps + 1);
+
+        for (int j = 0; j <= vSteps; j++) {
+            for (int i = 0; i <= uSteps; i++) {
+                double angle = Math.PI * 2 * i / uSteps;
+                float x = radius * (float) Math.cos(angle);
+                float y = height * ((float) j / vSteps - 0.5f);
+                float z = radius * (float) Math.sin(angle);
+                float u = -4.0f * (float) i / uSteps;
+                float v = -4.0f * (float) j / vSteps;
+                float w0 = (float) j / vSteps;
+                float w1 = 1.0f - w0;
+                grid.set(i, j, x, y, z, u, v, w0, w1, 0, 1);
+            }
+        }
+
+        grid.createBufferObjects(gl);
+        return grid;
+    }
+}