diff --git a/include/ui/SurfaceComposerClient.h b/include/ui/SurfaceComposerClient.h
index 269959c..8701928 100644
--- a/include/ui/SurfaceComposerClient.h
+++ b/include/ui/SurfaceComposerClient.h
@@ -20,6 +20,8 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <binder/IBinder.h>
+
 #include <utils/SortedVector.h>
 #include <utils/RefBase.h>
 #include <utils/threads.h>
@@ -106,6 +108,8 @@
     static ssize_t getDisplayHeight(DisplayID dpy);
     static ssize_t getDisplayOrientation(DisplayID dpy);
 
+    status_t linkToComposerDeath(const sp<IBinder::DeathRecipient>& recipient,
+            void* cookie = NULL, uint32_t flags = 0);
 
 private:
     friend class Surface;
diff --git a/libs/ui/FramebufferNativeWindow.cpp b/libs/ui/FramebufferNativeWindow.cpp
index fc2e2f6..c5e22e5 100644
--- a/libs/ui/FramebufferNativeWindow.cpp
+++ b/libs/ui/FramebufferNativeWindow.cpp
@@ -117,15 +117,17 @@
 
         LOGE_IF(err, "fb buffer 1 allocation failed w=%d, h=%d, err=%s",
                 fbDev->width, fbDev->height, strerror(-err));
-    }
 
-    const_cast<uint32_t&>(android_native_window_t::flags) = fbDev->flags; 
-    const_cast<float&>(android_native_window_t::xdpi) = fbDev->xdpi;
-    const_cast<float&>(android_native_window_t::ydpi) = fbDev->ydpi;
-    const_cast<int&>(android_native_window_t::minSwapInterval) = 
-        fbDev->minSwapInterval;
-    const_cast<int&>(android_native_window_t::maxSwapInterval) = 
-        fbDev->maxSwapInterval;
+        const_cast<uint32_t&>(android_native_window_t::flags) = fbDev->flags; 
+        const_cast<float&>(android_native_window_t::xdpi) = fbDev->xdpi;
+        const_cast<float&>(android_native_window_t::ydpi) = fbDev->ydpi;
+        const_cast<int&>(android_native_window_t::minSwapInterval) = 
+            fbDev->minSwapInterval;
+        const_cast<int&>(android_native_window_t::maxSwapInterval) = 
+            fbDev->maxSwapInterval;
+    } else {
+        LOGE("Couldn't get gralloc module");
+    }
 
     android_native_window_t::setSwapInterval = setSwapInterval;
     android_native_window_t::dequeueBuffer = dequeueBuffer;
diff --git a/libs/ui/SurfaceComposerClient.cpp b/libs/ui/SurfaceComposerClient.cpp
index 8401cb6..3baa281 100644
--- a/libs/ui/SurfaceComposerClient.cpp
+++ b/libs/ui/SurfaceComposerClient.cpp
@@ -62,34 +62,42 @@
 static sp<IMemoryHeap>                                      gServerCblkMemory;
 static volatile surface_flinger_cblk_t*                     gServerCblk;
 
-const sp<ISurfaceComposer>& _get_surface_manager()
+static sp<ISurfaceComposer> getComposerService()
 {
-    if (gSurfaceManager != 0) {
-        return gSurfaceManager;
-    }
-
-    sp<IBinder> binder;
-    sp<IServiceManager> sm = defaultServiceManager();
-    do {
-        binder = sm->getService(String16("SurfaceFlinger"));
-        if (binder == 0) {
-            LOGW("SurfaceFlinger not published, waiting...");
-            usleep(500000); // 0.5 s
-        }
-    } while(binder == 0);
-    sp<ISurfaceComposer> sc(interface_cast<ISurfaceComposer>(binder));
-
+    sp<ISurfaceComposer> sc;
     Mutex::Autolock _l(gLock);
-    if (gSurfaceManager == 0) {
-        gSurfaceManager = sc;
+    if (gSurfaceManager != 0) {
+        sc = gSurfaceManager;
+    } else {
+        // release the lock while we're waiting...
+        gLock.unlock();
+
+        sp<IBinder> binder;
+        sp<IServiceManager> sm = defaultServiceManager();
+        do {
+            binder = sm->getService(String16("SurfaceFlinger"));
+            if (binder == 0) {
+                LOGW("SurfaceFlinger not published, waiting...");
+                usleep(500000); // 0.5 s
+            }
+        } while(binder == 0);
+
+        // grab the lock again for updating gSurfaceManager
+        gLock.lock();
+        if (gSurfaceManager == 0) {
+            sc = interface_cast<ISurfaceComposer>(binder);
+            gSurfaceManager = sc;
+        } else {
+            sc = gSurfaceManager;
+        }
     }
-    return gSurfaceManager;
+    return sc;
 }
 
 static volatile surface_flinger_cblk_t const * get_cblk()
 {
     if (gServerCblk == 0) {
-        const sp<ISurfaceComposer>& sm(_get_surface_manager());
+        sp<ISurfaceComposer> sm(getComposerService());
         Mutex::Autolock _l(gLock);
         if (gServerCblk == 0) {
             gServerCblkMemory = sm->getCblk();
@@ -112,7 +120,7 @@
 
 SurfaceComposerClient::SurfaceComposerClient()
 {
-    const sp<ISurfaceComposer>& sm(_get_surface_manager());
+    sp<ISurfaceComposer> sm(getComposerService());
     if (sm == 0) {
         _init(0, 0);
         return;
@@ -133,6 +141,15 @@
     _init(sm, interface_cast<ISurfaceFlingerClient>(conn));
 }
 
+
+status_t SurfaceComposerClient::linkToComposerDeath(
+        const sp<IBinder::DeathRecipient>& recipient,
+        void* cookie, uint32_t flags)
+{
+    sp<ISurfaceComposer> sm(getComposerService());
+    return sm->asBinder()->linkToDeath(recipient, cookie, flags);    
+}
+
 void SurfaceComposerClient::_init(
         const sp<ISurfaceComposer>& sm, const sp<ISurfaceFlingerClient>& conn)
 {
@@ -183,7 +200,7 @@
 
     if (client == 0) {
         // Need to make a new client.
-        const sp<ISurfaceComposer>& sm(_get_surface_manager());
+        sp<ISurfaceComposer> sm(getComposerService());
         client = new SurfaceComposerClient(sm, conn);
         if (client != 0 && client->initCheck() == NO_ERROR) {
             Mutex::Autolock _l(gLock);
@@ -377,7 +394,7 @@
     const size_t N = clients.size();
     VERBOSE("closeGlobalTransaction (%ld clients)", N);
 
-    const sp<ISurfaceComposer>& sm(_get_surface_manager());
+    sp<ISurfaceComposer> sm(getComposerService());
     sm->openGlobalTransaction();
     for (size_t i=0; i<N; i++) {
         clients[i]->closeTransaction();
@@ -389,20 +406,20 @@
 
 status_t SurfaceComposerClient::freezeDisplay(DisplayID dpy, uint32_t flags)
 {
-    const sp<ISurfaceComposer>& sm(_get_surface_manager());
+    sp<ISurfaceComposer> sm(getComposerService());
     return sm->freezeDisplay(dpy, flags);
 }
 
 status_t SurfaceComposerClient::unfreezeDisplay(DisplayID dpy, uint32_t flags)
 {
-    const sp<ISurfaceComposer>& sm(_get_surface_manager());
+    sp<ISurfaceComposer> sm(getComposerService());
     return sm->unfreezeDisplay(dpy, flags);
 }
 
 int SurfaceComposerClient::setOrientation(DisplayID dpy, 
         int orientation, uint32_t flags)
 {
-    const sp<ISurfaceComposer>& sm(_get_surface_manager());
+    sp<ISurfaceComposer> sm(getComposerService());
     return sm->setOrientation(dpy, orientation, flags);
 }
 
diff --git a/opengl/tests/gl2_basic/gl2_basic.cpp b/opengl/tests/gl2_basic/gl2_basic.cpp
index f97d347..ba9a717 100644
--- a/opengl/tests/gl2_basic/gl2_basic.cpp
+++ b/opengl/tests/gl2_basic/gl2_basic.cpp
@@ -291,6 +291,7 @@
     for (;;) {
         renderFrame();
         eglSwapBuffers(dpy, surface);
+        checkEglError("eglSwapBuffers");
     }
 
     return 0;
diff --git a/opengl/tests/gl2_jni/Android.mk b/opengl/tests/gl2_jni/Android.mk
new file mode 100644
index 0000000..ff15814
--- /dev/null
+++ b/opengl/tests/gl2_jni/Android.mk
@@ -0,0 +1,53 @@
+#########################################################################
+# OpenGL ES JNI sample
+# This makefile builds both an activity and a shared library.
+#########################################################################
+ifneq ($(TARGET_SIMULATOR),true) # not 64 bit clean
+
+TOP_LOCAL_PATH:= $(call my-dir)
+
+# Build activity
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := user
+
+LOCAL_SRC_FILES := $(call all-subdir-java-files)
+
+LOCAL_PACKAGE_NAME := GL2JNI
+
+LOCAL_JNI_SHARED_LIBRARIES := libgl2jni
+
+include $(BUILD_PACKAGE)
+
+#########################################################################
+# Build JNI Shared Library
+#########################################################################
+
+LOCAL_PATH:= $(LOCAL_PATH)/jni
+
+include $(CLEAR_VARS)
+
+# Optional tag would mean it doesn't get installed by default
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_CFLAGS := -Werror
+
+LOCAL_SRC_FILES:= \
+  gl_code.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+	libutils \
+	libEGL \
+	libGLESv2
+
+LOCAL_MODULE := libgl2jni
+
+LOCAL_ARM_MODE := arm
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
+
+endif # TARGET_SIMULATOR
diff --git a/opengl/tests/gl2_jni/AndroidManifest.xml b/opengl/tests/gl2_jni/AndroidManifest.xml
new file mode 100644
index 0000000..a72a6a5
--- /dev/null
+++ b/opengl/tests/gl2_jni/AndroidManifest.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 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.
+*/
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.gl2jni">
+    <application
+            android:label="@string/gl2jni_activity">
+        <activity android:name="GL2JNIActivity"
+                android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
+            	android:launchMode="singleTask"
+            	android:configChanges="orientation|keyboardHidden">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>
diff --git a/opengl/tests/gl2_jni/jni/gl_code.cpp b/opengl/tests/gl2_jni/jni/gl_code.cpp
new file mode 100644
index 0000000..146d52a
--- /dev/null
+++ b/opengl/tests/gl2_jni/jni/gl_code.cpp
@@ -0,0 +1,165 @@
+// OpenGL ES 2.0 code
+
+#include <nativehelper/jni.h>
+#define LOG_TAG "GL2JNI gl_code.cpp"
+#include <utils/Log.h>
+
+#include <EGL/egl.h>
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+static void printGLString(const char *name, GLenum s) {
+    const char *v = (const char *) glGetString(s);
+    LOGI("GL %s = %s\n", name, v);
+}
+
+static void checkGlError(const char* op) {
+    for (GLint error = glGetError(); error; error
+            = glGetError()) {
+        LOGI("after %s() glError (0x%x)\n", op, error);
+    }
+}
+
+static const char gVertexShader[] = "attribute vec4 vPosition;\n"
+    "void main() {\n"
+    "  gl_Position = vPosition;\n"
+    "}\n";
+
+static const char gFragmentShader[] = "precision mediump float;\n"
+    "void main() {\n"
+    "  gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
+    "}\n";
+
+GLuint loadShader(GLenum shaderType, const char* pSource) {
+    GLuint shader = glCreateShader(shaderType);
+    if (shader) {
+        glShaderSource(shader, 1, &pSource, NULL);
+        glCompileShader(shader);
+        GLint compiled = 0;
+        glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled);
+        if (!compiled) {
+            GLint infoLen = 0;
+            glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen);
+            if (infoLen) {
+                char* buf = (char*) malloc(infoLen);
+                if (buf) {
+                    glGetShaderInfoLog(shader, infoLen, NULL, buf);
+                    LOGE("Could not compile shader %d:\n%s\n",
+                            shaderType, buf);
+                    free(buf);
+                }
+                glDeleteShader(shader);
+                shader = 0;
+            }
+        }
+    }
+    return shader;
+}
+
+GLuint createProgram(const char* pVertexSource, const char* pFragmentSource) {
+    GLuint vertexShader = loadShader(GL_VERTEX_SHADER, pVertexSource);
+    if (!vertexShader) {
+        return 0;
+    }
+
+    GLuint pixelShader = loadShader(GL_FRAGMENT_SHADER, pFragmentSource);
+    if (!pixelShader) {
+        return 0;
+    }
+
+    GLuint program = glCreateProgram();
+    if (program) {
+        glAttachShader(program, vertexShader);
+        checkGlError("glAttachShader");
+        glAttachShader(program, pixelShader);
+        checkGlError("glAttachShader");
+        glLinkProgram(program);
+        GLint linkStatus = GL_FALSE;
+        glGetProgramiv(program, GL_LINK_STATUS, &linkStatus);
+        if (linkStatus != GL_TRUE) {
+            GLint bufLength = 0;
+            glGetProgramiv(program, GL_INFO_LOG_LENGTH, &bufLength);
+            if (bufLength) {
+                char* buf = (char*) malloc(bufLength);
+                if (buf) {
+                    glGetProgramInfoLog(program, bufLength, NULL, buf);
+                    LOGE("Could not link program:\n%s\n", buf);
+                    free(buf);
+                }
+            }
+            glDeleteProgram(program);
+            program = 0;
+        }
+    }
+    return program;
+}
+
+GLuint gProgram;
+GLuint gvPositionHandle;
+
+bool setupGraphics(int w, int h) {
+    printGLString("Version", GL_VERSION);
+    printGLString("Vendor", GL_VENDOR);
+    printGLString("Renderer", GL_RENDERER);
+    printGLString("Extensions", GL_EXTENSIONS);
+
+    LOGI("setupGraphics(%d, %d)", w, h);
+    gProgram = createProgram(gVertexShader, gFragmentShader);
+    if (!gProgram) {
+        LOGE("Could not create program.");
+        return false;
+    }
+    gvPositionHandle = glGetAttribLocation(gProgram, "vPosition");
+    checkGlError("glGetAttribLocation");
+    LOGI("glGetAttribLocation(\"vPosition\") = %d\n",
+            gvPositionHandle);
+
+    glViewport(0, 0, w, h);
+    checkGlError("glViewport");
+    return true;
+}
+
+const GLfloat gTriangleVertices[] = { 0.0f, 0.5f, -0.5f, -0.5f,
+        0.5f, -0.5f };
+
+void renderFrame() {
+    static float grey;
+    grey += 0.01f;
+    if (grey > 1.0f) {
+        grey = 0.0f;
+    }
+    glClearColor(grey, grey, grey, 1.0f);
+    checkGlError("glClearColor");
+    glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
+    checkGlError("glClear");
+
+    glUseProgram(gProgram);
+    checkGlError("glUseProgram");
+
+    glVertexAttribPointer(gvPositionHandle, 2, GL_FLOAT, GL_FALSE, 0, gTriangleVertices);
+    checkGlError("glVertexAttribPointer");
+    glEnableVertexAttribArray(gvPositionHandle);
+    checkGlError("glEnableVertexAttribArray");
+    glDrawArrays(GL_TRIANGLES, 0, 3);
+    checkGlError("glDrawArrays");
+}
+
+extern "C" {
+    JNIEXPORT void JNICALL Java_com_android_gl2jni_GL2JNILib_init(JNIEnv * env, jobject obj,  jint width, jint height);
+    JNIEXPORT void JNICALL Java_com_android_gl2jni_GL2JNILib_step(JNIEnv * env, jobject obj);
+};
+
+JNIEXPORT void JNICALL Java_com_android_gl2jni_GL2JNILib_init(JNIEnv * env, jobject obj,  jint width, jint height)
+{
+    setupGraphics(width, height);
+}
+
+JNIEXPORT void JNICALL Java_com_android_gl2jni_GL2JNILib_step(JNIEnv * env, jobject obj)
+{
+    renderFrame();
+}
+
diff --git a/opengl/tests/gl2_jni/res/values/strings.xml b/opengl/tests/gl2_jni/res/values/strings.xml
new file mode 100644
index 0000000..e3f7331
--- /dev/null
+++ b/opengl/tests/gl2_jni/res/values/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2006, 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.
+*/
+-->
+
+<!-- This file contains resource definitions for displayed strings, allowing
+     them to be changed based on the locale and options. -->
+
+<resources>
+    <!-- Simple strings. -->
+    <string name="gl2jni_activity">GL2JNI</string>
+
+</resources>
+
diff --git a/opengl/tests/gl2_jni/src/com/android/gl2jni/GL2JNIActivity.java b/opengl/tests/gl2_jni/src/com/android/gl2jni/GL2JNIActivity.java
new file mode 100644
index 0000000..c366a2c
--- /dev/null
+++ b/opengl/tests/gl2_jni/src/com/android/gl2jni/GL2JNIActivity.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2007 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.android.gl2jni;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.WindowManager;
+
+import java.io.File;
+
+
+public class GL2JNIActivity extends Activity {
+
+    GL2JNIView mView;
+
+    @Override protected void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        mView = new GL2JNIView(getApplication());
+	setContentView(mView);
+    }
+
+    @Override protected void onPause() {
+        super.onPause();
+        mView.onPause();
+    }
+
+    @Override protected void onResume() {
+        super.onResume();
+        mView.onResume();
+    }
+}
diff --git a/opengl/tests/gl2_jni/src/com/android/gl2jni/GL2JNILib.java b/opengl/tests/gl2_jni/src/com/android/gl2jni/GL2JNILib.java
new file mode 100644
index 0000000..040a984
--- /dev/null
+++ b/opengl/tests/gl2_jni/src/com/android/gl2jni/GL2JNILib.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2007 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.android.gl2jni;
+
+// Wrapper for native library
+
+public class GL2JNILib {
+
+     static {
+         System.loadLibrary("gl2jni");
+     }
+
+    /**
+     * @param width the current view width
+     * @param height the current view height
+     */
+     public static native void init(int width, int height);
+     public static native void step();
+}
diff --git a/opengl/tests/gl2_jni/src/com/android/gl2jni/GL2JNIView.java b/opengl/tests/gl2_jni/src/com/android/gl2jni/GL2JNIView.java
new file mode 100644
index 0000000..baa10af
--- /dev/null
+++ b/opengl/tests/gl2_jni/src/com/android/gl2jni/GL2JNIView.java
@@ -0,0 +1,134 @@
+/*
+ * 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.android.gl2jni;
+/*
+ * Copyright (C) 2008 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.
+ */
+
+
+import android.content.Context;
+import android.opengl.GLSurfaceView;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+
+import javax.microedition.khronos.egl.EGL10;
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.egl.EGLContext;
+import javax.microedition.khronos.egl.EGLDisplay;
+import javax.microedition.khronos.opengles.GL10;
+/**
+ * An implementation of SurfaceView that uses the dedicated surface for
+ * displaying an OpenGL animation.  This allows the animation to run in a
+ * separate thread, without requiring that it be driven by the update mechanism
+ * of the view hierarchy.
+ *
+ * The application-specific rendering code is delegated to a GLView.Renderer
+ * instance.
+ */
+class GL2JNIView extends GLSurfaceView {
+    private static String TAG = "GL2JNIView";
+    GL2JNIView(Context context) {
+        super(context);
+        init();
+    }
+
+    public GL2JNIView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init();
+    }
+
+    private void init() {
+        setEGLContextFactory(new ContextFactory());
+        // setEGLConfigChooser(new ConfigChooser());
+        setRenderer(new Renderer());
+    }
+
+    private static class ContextFactory implements GLSurfaceView.EGLContextFactory {
+        private static int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
+        public EGLContext createContext(EGL10 egl, EGLDisplay display, EGLConfig eglConfig) {
+            checkEglError("Before eglCreateContext", egl);
+            int[] attrib_list = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
+            EGLContext context = egl.eglCreateContext(display, eglConfig, EGL10.EGL_NO_CONTEXT, attrib_list);
+            checkEglError("After eglCreateContext", egl);
+            return context;
+        }
+
+        public void destroyContext(EGL10 egl, EGLDisplay display, EGLContext context) {
+            egl.eglDestroyContext(display, context);
+        } 
+    }
+
+    private static void checkEglError(String prompt, EGL10 egl) {
+        int error;
+        while ((error = egl.eglGetError()) != EGL10.EGL_SUCCESS) {
+            Log.e(TAG, String.format("%s: EGL error: 0x%x", prompt, error));
+        }
+    }
+
+    private static class ConfigChooser implements GLSurfaceView.EGLConfigChooser {
+        private static int EGL_OPENGL_ES2_BIT = 4;
+        private static int[]  s_configAttribs2 =
+        {
+                EGL10.EGL_DEPTH_SIZE,     16,
+                // EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+                EGL10.EGL_NONE
+        };
+        public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) {
+
+            int[] num_config = new int[1];
+            egl.eglChooseConfig(display, s_configAttribs2, null, 0, num_config);
+
+            int numConfigs = num_config[0];
+
+            if (numConfigs <= 0) {
+                throw new IllegalArgumentException("No configs match configSpec");
+            }
+            EGLConfig[] configs = new EGLConfig[numConfigs];
+            egl.eglChooseConfig(display, s_configAttribs2, configs, numConfigs, num_config);
+            return configs[0];
+        }
+    }
+
+    private static class Renderer implements GLSurfaceView.Renderer {
+        public void onDrawFrame(GL10 gl) {
+            GL2JNILib.step();
+        }
+
+        public void onSurfaceChanged(GL10 gl, int width, int height) {
+            GL2JNILib.init(width, height);
+        }
+
+        public void onSurfaceCreated(GL10 gl, EGLConfig config) {
+            // Do nothing.
+        }
+    }
+}
+
diff --git a/opengl/tests/gl_jni/Android.mk b/opengl/tests/gl_jni/Android.mk
new file mode 100644
index 0000000..4029fa1
--- /dev/null
+++ b/opengl/tests/gl_jni/Android.mk
@@ -0,0 +1,53 @@
+#########################################################################
+# OpenGL ES JNI sample
+# This makefile builds both an activity and a shared library.
+#########################################################################
+ifneq ($(TARGET_SIMULATOR),true) # not 64 bit clean
+
+TOP_LOCAL_PATH:= $(call my-dir)
+
+# Build activity
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := user
+
+LOCAL_SRC_FILES := $(call all-subdir-java-files)
+
+LOCAL_PACKAGE_NAME := GLJNI
+
+LOCAL_JNI_SHARED_LIBRARIES := libgljni
+
+include $(BUILD_PACKAGE)
+
+#########################################################################
+# Build JNI Shared Library
+#########################################################################
+
+LOCAL_PATH:= $(LOCAL_PATH)/jni
+
+include $(CLEAR_VARS)
+
+# Optional tag would mean it doesn't get installed by default
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_CFLAGS := -Werror
+
+LOCAL_SRC_FILES:= \
+  gl_code.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+	libutils \
+	libEGL \
+	libGLESv1_CM
+
+LOCAL_MODULE := libgljni
+
+LOCAL_ARM_MODE := arm
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
+
+endif # TARGET_SIMULATOR
diff --git a/opengl/tests/gl_jni/AndroidManifest.xml b/opengl/tests/gl_jni/AndroidManifest.xml
new file mode 100644
index 0000000..64bd6bf
--- /dev/null
+++ b/opengl/tests/gl_jni/AndroidManifest.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 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.
+*/
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.gljni">
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <application
+            android:label="@string/gljni_activity">
+        <activity android:name="GLJNIActivity"
+                android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
+            	android:launchMode="singleTask"
+            	android:screenOrientation="landscape"
+            	android:configChanges="orientation|keyboardHidden">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>
diff --git a/opengl/tests/gl_jni/jni/gl_code.cpp b/opengl/tests/gl_jni/jni/gl_code.cpp
new file mode 100644
index 0000000..b85a433
--- /dev/null
+++ b/opengl/tests/gl_jni/jni/gl_code.cpp
@@ -0,0 +1,177 @@
+// OpenGL ES 1.0 code
+
+#include <nativehelper/jni.h>
+#define LOG_TAG "GLJNI gl_code.cpp"
+#include <utils/Log.h>
+#include <GLES/gl.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+GLuint texture;
+
+#define FIXED_ONE 0x10000
+
+static void printGLString(const char *name, GLenum s) {
+    const char *v = (const char *) glGetString(s);
+    LOGI("GL %s = %s\n", name, v);
+}
+
+static void gluLookAt(float eyeX, float eyeY, float eyeZ,
+        float centerX, float centerY, float centerZ, float upX, float upY,
+        float upZ)
+{
+    // See the OpenGL GLUT documentation for gluLookAt for a description
+    // of the algorithm. We implement it in a straightforward way:
+
+    float fx = centerX - eyeX;
+    float fy = centerY - eyeY;
+    float fz = centerZ - eyeZ;
+
+    // Normalize f
+    float rlf = 1.0f / sqrtf(fx*fx + fy*fy + fz*fz);
+    fx *= rlf;
+    fy *= rlf;
+    fz *= rlf;
+
+    // Normalize up
+    float rlup = 1.0f / sqrtf(upX*upX + upY*upY + upZ*upZ);
+    upX *= rlup;
+    upY *= rlup;
+    upZ *= rlup;
+
+    // compute s = f x up (x means "cross product")
+
+    float sx = fy * upZ - fz * upY;
+    float sy = fz * upX - fx * upZ;
+    float sz = fx * upY - fy * upX;
+
+    // compute u = s x f
+    float ux = sy * fz - sz * fy;
+    float uy = sz * fx - sx * fz;
+    float uz = sx * fy - sy * fx;
+
+    float m[16] ;
+    m[0] = sx;
+    m[1] = ux;
+    m[2] = -fx;
+    m[3] = 0.0f;
+
+    m[4] = sy;
+    m[5] = uy;
+    m[6] = -fy;
+    m[7] = 0.0f;
+
+    m[8] = sz;
+    m[9] = uz;
+    m[10] = -fz;
+    m[11] = 0.0f;
+
+    m[12] = 0.0f;
+    m[13] = 0.0f;
+    m[14] = 0.0f;
+    m[15] = 1.0f;
+
+    glMultMatrixf(m);
+    glTranslatef(-eyeX, -eyeY, -eyeZ);
+}
+
+void init_scene(int width, int height)
+{
+    printGLString("Version", GL_VERSION);
+    printGLString("Vendor", GL_VENDOR);
+    printGLString("Renderer", GL_RENDERER);
+    printGLString("Extensions", GL_EXTENSIONS);
+    glDisable(GL_DITHER);
+    glEnable(GL_CULL_FACE);
+
+
+    float ratio = width / height;
+    glViewport(0, 0, width, height);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glFrustumf(-ratio, ratio, -1, 1, 1, 10);
+
+
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    gluLookAt(
+            0, 0, 3,  // eye
+            0, 0, 0,  // center
+            0, 1, 0); // up
+
+    glEnable(GL_TEXTURE_2D);
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+}
+
+void create_texture()
+{
+    const unsigned int on = 0xff0000ff;
+    const unsigned int off = 0xffffffff;
+    const unsigned int pixels[] =
+    {
+            on, off, on, off, on, off, on, off,
+            off, on, off, on, off, on, off, on,
+            on, off, on, off, on, off, on, off,
+            off, on, off, on, off, on, off, on,
+            on, off, on, off, on, off, on, off,
+            off, on, off, on, off, on, off, on,
+            on, off, on, off, on, off, on, off,
+            off, on, off, on, off, on, off, on,
+    };
+    glGenTextures(1, &texture);
+    glBindTexture(GL_TEXTURE_2D, texture);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+}
+
+extern "C" {
+    JNIEXPORT void JNICALL Java_com_android_gljni_GLJNILib_init(JNIEnv * env, jobject obj,  jint width, jint height);
+    JNIEXPORT void JNICALL Java_com_android_gljni_GLJNILib_step(JNIEnv * env, jobject obj);
+};
+
+
+JNIEXPORT void JNICALL Java_com_android_gljni_GLJNILib_init(JNIEnv * env, jobject obj,  jint width, jint height)
+{
+    init_scene(width, height);
+    create_texture();
+}
+
+JNIEXPORT void JNICALL Java_com_android_gljni_GLJNILib_step(JNIEnv * env, jobject obj)
+{
+    const GLfloat vertices[] = {
+            -1,  -1,  0,
+             1,  -1,  0,
+             1,   1,  0,
+            -1,   1,  0
+    };
+
+    const GLfixed texCoords[] = {
+            0,            0,
+            FIXED_ONE,    0,
+            FIXED_ONE,    FIXED_ONE,
+            0,            FIXED_ONE
+    };
+
+    const GLushort quadIndices[] = { 0, 1, 2,  0, 2, 3 };
+
+    glVertexPointer(3, GL_FLOAT, 0, vertices);
+    glTexCoordPointer(2, GL_FIXED, 0, texCoords);
+
+
+    int nelem = sizeof(quadIndices)/sizeof(quadIndices[0]);
+    static float grey;
+    grey += 0.01f;
+    if (grey > 1.0f) {
+        grey = 0.0f;
+    }
+    glClearColor(grey, grey, grey, 1.0f);
+    glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
+    glDrawElements(GL_TRIANGLES, nelem, GL_UNSIGNED_SHORT, quadIndices);
+}
+
diff --git a/opengl/tests/gl_jni/res/values/strings.xml b/opengl/tests/gl_jni/res/values/strings.xml
new file mode 100644
index 0000000..880f5c9
--- /dev/null
+++ b/opengl/tests/gl_jni/res/values/strings.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2006, 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.
+*/
+-->
+
+<!-- This file contains resource definitions for displayed strings, allowing
+     them to be changed based on the locale and options. -->
+
+<resources>
+    <!-- Simple strings. -->
+    <string name="gljni_activity">GLJNI</string>
+
+</resources>
+
diff --git a/opengl/tests/gl_jni/src/com/android/gljni/GLJNIActivity.java b/opengl/tests/gl_jni/src/com/android/gljni/GLJNIActivity.java
new file mode 100644
index 0000000..df1f957
--- /dev/null
+++ b/opengl/tests/gl_jni/src/com/android/gljni/GLJNIActivity.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2007 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.android.gljni;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.WindowManager;
+
+import java.io.File;
+
+
+public class GLJNIActivity extends Activity {
+
+    GLJNIView mView;
+
+    @Override protected void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        mView = new GLJNIView(getApplication());
+	setContentView(mView);
+    }
+
+    @Override protected void onPause() {
+        super.onPause();
+        mView.onPause();
+    }
+
+    @Override protected void onResume() {
+        super.onResume();
+        mView.onResume();
+    }
+}
diff --git a/opengl/tests/gl_jni/src/com/android/gljni/GLJNILib.java b/opengl/tests/gl_jni/src/com/android/gljni/GLJNILib.java
new file mode 100644
index 0000000..8662725
--- /dev/null
+++ b/opengl/tests/gl_jni/src/com/android/gljni/GLJNILib.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2007 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.android.gljni;
+
+// Wrapper for native library
+
+public class GLJNILib {
+
+     static {
+         System.loadLibrary("gljni");
+     }
+
+    /**
+     * @param width the current view width
+     * @param height the current view height
+     */
+     public static native void init(int width, int height);
+     public static native void step();
+}
diff --git a/opengl/tests/gl_jni/src/com/android/gljni/GLJNIView.java b/opengl/tests/gl_jni/src/com/android/gljni/GLJNIView.java
new file mode 100644
index 0000000..9ea1059
--- /dev/null
+++ b/opengl/tests/gl_jni/src/com/android/gljni/GLJNIView.java
@@ -0,0 +1,84 @@
+/*
+ * 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.android.gljni;
+/*
+ * Copyright (C) 2008 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.
+ */
+
+
+import android.content.Context;
+import android.opengl.GLSurfaceView;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+
+import javax.microedition.khronos.egl.EGL10;
+import javax.microedition.khronos.egl.EGLConfig;
+import javax.microedition.khronos.opengles.GL10;
+/**
+ * An implementation of SurfaceView that uses the dedicated surface for
+ * displaying an OpenGL animation.  This allows the animation to run in a
+ * separate thread, without requiring that it be driven by the update mechanism
+ * of the view hierarchy.
+ *
+ * The application-specific rendering code is delegated to a GLView.Renderer
+ * instance.
+ */
+class GLJNIView extends GLSurfaceView {
+    GLJNIView(Context context) {
+        super(context);
+        init();
+    }
+
+    public GLJNIView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init();
+    }
+
+    private void init() {
+        setRenderer(new Renderer());
+    }
+
+    private class Renderer implements GLSurfaceView.Renderer {
+        private static final String TAG = "Renderer";
+        public void onDrawFrame(GL10 gl) {
+            GLJNILib.step();
+        }
+
+        public void onSurfaceChanged(GL10 gl, int width, int height) {
+            GLJNILib.init(width, height);
+        }
+
+        public void onSurfaceCreated(GL10 gl, EGLConfig config) {
+            // Do nothing.
+        }
+    }
+}
+