diff --git a/opengl/tests/gl2_yuvtex/Android.mk b/opengl/tests/gl2_yuvtex/Android.mk
new file mode 100644
index 0000000..6304700
--- /dev/null
+++ b/opengl/tests/gl2_yuvtex/Android.mk
@@ -0,0 +1,19 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= \
+	gl2_yuvtex.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+	libcutils \
+    libEGL \
+    libGLESv2 \
+    libui
+
+LOCAL_MODULE:= test-opengl-gl2_yuvtex
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_CFLAGS := -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
+
+include $(BUILD_EXECUTABLE)
diff --git a/opengl/tests/gl2_yuvtex/gl2_yuvtex.cpp b/opengl/tests/gl2_yuvtex/gl2_yuvtex.cpp
new file mode 100644
index 0000000..602ea1a
--- /dev/null
+++ b/opengl/tests/gl2_yuvtex/gl2_yuvtex.cpp
@@ -0,0 +1,427 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+#include <sched.h>
+#include <sys/resource.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
+#include <utils/Timers.h>
+
+#include <ui/FramebufferNativeWindow.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/EGLUtils.h>
+
+using namespace android;
+
+static void printGLString(const char *name, GLenum s) {
+    // fprintf(stderr, "printGLString %s, %d\n", name, s);
+    const char *v = (const char *) glGetString(s);
+    // int error = glGetError();
+    // fprintf(stderr, "glGetError() = %d, result of glGetString = %x\n", error,
+    //        (unsigned int) v);
+    // if ((v < (const char*) 0) || (v > (const char*) 0x10000))
+    //    fprintf(stderr, "GL %s = %s\n", name, v);
+    // else
+    //    fprintf(stderr, "GL %s = (null) 0x%08x\n", name, (unsigned int) v);
+    fprintf(stderr, "GL %s = %s\n", name, v);
+}
+
+static void checkEglError(const char* op, EGLBoolean returnVal = EGL_TRUE) {
+    if (returnVal != EGL_TRUE) {
+        fprintf(stderr, "%s() returned %d\n", op, returnVal);
+    }
+
+    for (EGLint error = eglGetError(); error != EGL_SUCCESS; error
+            = eglGetError()) {
+        fprintf(stderr, "after %s() eglError %s (0x%x)\n", op, EGLUtils::strerror(error),
+                error);
+    }
+}
+
+static void checkGlError(const char* op) {
+    for (GLint error = glGetError(); error; error
+            = glGetError()) {
+        fprintf(stderr, "after %s() glError (0x%x)\n", op, error);
+    }
+}
+
+static const char gVertexShader[] = "attribute vec4 vPosition;\n"
+    "varying vec2 yuvTexCoords;\n"
+    "void main() {\n"
+    "  yuvTexCoords = vPosition.xy + vec2(0.5, 0.5);\n"
+    "  gl_Position = vPosition;\n"
+    "}\n";
+
+static const char gFragmentShader[] = "#extension GL_OES_EGL_image_external : require\n"
+    "precision mediump float;\n"
+    "uniform samplerExternalOES yuvTexSampler;\n"
+    "varying vec2 yuvTexCoords;\n"
+    "void main() {\n"
+    "  gl_FragColor = texture2D(yuvTexSampler, yuvTexCoords);\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);
+                    fprintf(stderr, "Could not compile shader %d:\n%s\n",
+                            shaderType, buf);
+                    free(buf);
+                }
+            } else {
+                fprintf(stderr, "Guessing at GL_INFO_LOG_LENGTH size\n");
+                char* buf = (char*) malloc(0x1000);
+                if (buf) {
+                    glGetShaderInfoLog(shader, 0x1000, NULL, buf);
+                    fprintf(stderr, "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);
+                    fprintf(stderr, "Could not link program:\n%s\n", buf);
+                    free(buf);
+                }
+            }
+            glDeleteProgram(program);
+            program = 0;
+        }
+    }
+    return program;
+}
+
+GLuint gProgram;
+GLint gvPositionHandle;
+GLint gYuvTexSamplerHandle;
+
+bool setupGraphics(int w, int h) {
+    gProgram = createProgram(gVertexShader, gFragmentShader);
+    if (!gProgram) {
+        return false;
+    }
+    gvPositionHandle = glGetAttribLocation(gProgram, "vPosition");
+    checkGlError("glGetAttribLocation");
+    fprintf(stderr, "glGetAttribLocation(\"vPosition\") = %d\n",
+            gvPositionHandle);
+    gYuvTexSamplerHandle = glGetUniformLocation(gProgram, "yuvTexSampler");
+    checkGlError("glGetUniformLocation");
+    fprintf(stderr, "glGetUniformLocation(\"yuvTexSampler\") = %d\n",
+            gYuvTexSamplerHandle);
+
+    glViewport(0, 0, w, h);
+    checkGlError("glViewport");
+    return true;
+}
+
+int align(int x, int a) {
+    return (x + (a-1)) & (~(a-1));
+}
+
+const int yuvTexWidth = 608;
+const int yuvTexHeight = 480;
+const int yuvTexUsage = GraphicBuffer::USAGE_HW_TEXTURE |
+        GraphicBuffer::USAGE_SW_WRITE_RARELY;
+const int yuvTexFormat = HAL_PIXEL_FORMAT_YV12;
+const int yuvTexOffsetY = 0;
+const int yuvTexStrideY = (yuvTexWidth + 0xf) & ~0xf;
+const int yuvTexOffsetV = yuvTexStrideY * yuvTexHeight;
+const int yuvTexStrideV = (yuvTexStrideY/2 + 0xf) & ~0xf; 
+const int yuvTexOffsetU = yuvTexOffsetV + yuvTexStrideV * yuvTexHeight/2;
+const int yuvTexStrideU = yuvTexStrideV;
+const bool yuvTexSameUV = false;
+static sp<GraphicBuffer> yuvTexBuffer;
+static GLuint yuvTex;
+
+bool setupYuvTexSurface(EGLDisplay dpy, EGLContext context) {
+    int blockWidth = yuvTexWidth > 16 ? yuvTexWidth / 16 : 1;
+    int blockHeight = yuvTexHeight > 16 ? yuvTexHeight / 16 : 1;
+    yuvTexBuffer = new GraphicBuffer(yuvTexWidth, yuvTexHeight, yuvTexFormat,
+            yuvTexUsage);
+    char* buf = NULL;
+    status_t err = yuvTexBuffer->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&buf));
+    if (err != 0) {
+        fprintf(stderr, "yuvTexBuffer->lock(...) failed: %d\n", err);
+        return false;
+    }
+    for (int x = 0; x < yuvTexWidth; x++) {
+        for (int y = 0; y < yuvTexHeight; y++) {
+            int parityX = (x / blockWidth) & 1;
+            int parityY = (y / blockHeight) & 1;
+            unsigned char intensity = (parityX ^ parityY) ? 63 : 191;
+            buf[yuvTexOffsetY + (y * yuvTexStrideY) + x] = intensity;
+            if (x < yuvTexWidth / 2 && y < yuvTexHeight / 2) {
+                buf[yuvTexOffsetU + (y * yuvTexStrideU) + x] = intensity;
+                if (yuvTexSameUV) {
+                    buf[yuvTexOffsetV + (y * yuvTexStrideV) + x] = intensity;
+                } else if (x < yuvTexWidth / 4 && y < yuvTexHeight / 4) {
+                    buf[yuvTexOffsetV + (y*2 * yuvTexStrideV) + x*2 + 0] =
+                    buf[yuvTexOffsetV + (y*2 * yuvTexStrideV) + x*2 + 1] =
+                    buf[yuvTexOffsetV + ((y*2+1) * yuvTexStrideV) + x*2 + 0] =
+                    buf[yuvTexOffsetV + ((y*2+1) * yuvTexStrideV) + x*2 + 1] = intensity;
+                }
+            }
+        }
+    }
+
+    err = yuvTexBuffer->unlock();
+    if (err != 0) {
+        fprintf(stderr, "yuvTexBuffer->unlock() failed: %d\n", err);
+        return false;
+    }
+
+    EGLClientBuffer clientBuffer = (EGLClientBuffer)yuvTexBuffer->getNativeBuffer();
+    EGLImageKHR img = eglCreateImageKHR(dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
+            clientBuffer, 0);
+    checkEglError("eglCreateImageKHR");
+    if (img == EGL_NO_IMAGE_KHR) {
+        return false;
+    }
+
+    glGenTextures(1, &yuvTex);
+    checkGlError("glGenTextures");
+    glBindTexture(GL_TEXTURE_EXTERNAL_OES, yuvTex);
+    checkGlError("glBindTexture");
+    glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, (GLeglImageOES)img);
+    checkGlError("glEGLImageTargetTexture2DOES");
+
+    return true;
+}
+
+const GLfloat gTriangleVertices[] = {
+    -0.5f, 0.5f,
+    -0.5f, -0.5f,
+    0.5f, -0.5f,
+    0.5f, 0.5f,
+};
+
+void renderFrame() {
+    glClearColor(0.0f, 0.0f, 1.0f, 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");
+
+    glUniform1i(gYuvTexSamplerHandle, 0);
+    checkGlError("glUniform1i");
+    glBindTexture(GL_TEXTURE_EXTERNAL_OES, yuvTex);
+    checkGlError("glBindTexture");
+
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    checkGlError("glDrawArrays");
+}
+
+void printEGLConfiguration(EGLDisplay dpy, EGLConfig config) {
+
+#define X(VAL) {VAL, #VAL}
+    struct {EGLint attribute; const char* name;} names[] = {
+    X(EGL_BUFFER_SIZE),
+    X(EGL_ALPHA_SIZE),
+    X(EGL_BLUE_SIZE),
+    X(EGL_GREEN_SIZE),
+    X(EGL_RED_SIZE),
+    X(EGL_DEPTH_SIZE),
+    X(EGL_STENCIL_SIZE),
+    X(EGL_CONFIG_CAVEAT),
+    X(EGL_CONFIG_ID),
+    X(EGL_LEVEL),
+    X(EGL_MAX_PBUFFER_HEIGHT),
+    X(EGL_MAX_PBUFFER_PIXELS),
+    X(EGL_MAX_PBUFFER_WIDTH),
+    X(EGL_NATIVE_RENDERABLE),
+    X(EGL_NATIVE_VISUAL_ID),
+    X(EGL_NATIVE_VISUAL_TYPE),
+    X(EGL_SAMPLES),
+    X(EGL_SAMPLE_BUFFERS),
+    X(EGL_SURFACE_TYPE),
+    X(EGL_TRANSPARENT_TYPE),
+    X(EGL_TRANSPARENT_RED_VALUE),
+    X(EGL_TRANSPARENT_GREEN_VALUE),
+    X(EGL_TRANSPARENT_BLUE_VALUE),
+    X(EGL_BIND_TO_TEXTURE_RGB),
+    X(EGL_BIND_TO_TEXTURE_RGBA),
+    X(EGL_MIN_SWAP_INTERVAL),
+    X(EGL_MAX_SWAP_INTERVAL),
+    X(EGL_LUMINANCE_SIZE),
+    X(EGL_ALPHA_MASK_SIZE),
+    X(EGL_COLOR_BUFFER_TYPE),
+    X(EGL_RENDERABLE_TYPE),
+    X(EGL_CONFORMANT),
+   };
+#undef X
+
+    for (size_t j = 0; j < sizeof(names) / sizeof(names[0]); j++) {
+        EGLint value = -1;
+        EGLint returnVal = eglGetConfigAttrib(dpy, config, names[j].attribute, &value);
+        EGLint error = eglGetError();
+        if (returnVal && error == EGL_SUCCESS) {
+            printf(" %s: ", names[j].name);
+            printf("%d (0x%x)", value, value);
+        }
+    }
+    printf("\n");
+}
+
+int main(int argc, char** argv) {
+    EGLBoolean returnValue;
+    EGLConfig myConfig = {0};
+
+    EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
+    EGLint s_configAttribs[] = {
+            EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+            EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+            EGL_NONE };
+    EGLint majorVersion;
+    EGLint minorVersion;
+    EGLContext context;
+    EGLSurface surface;
+    EGLint w, h;
+
+    EGLDisplay dpy;
+
+    checkEglError("<init>");
+    dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    checkEglError("eglGetDisplay");
+    if (dpy == EGL_NO_DISPLAY) {
+        printf("eglGetDisplay returned EGL_NO_DISPLAY.\n");
+        return 0;
+    }
+
+    returnValue = eglInitialize(dpy, &majorVersion, &minorVersion);
+    checkEglError("eglInitialize", returnValue);
+    fprintf(stderr, "EGL version %d.%d\n", majorVersion, minorVersion);
+    if (returnValue != EGL_TRUE) {
+        printf("eglInitialize failed\n");
+        return 0;
+    }
+
+    EGLNativeWindowType window = android_createDisplaySurface();
+    returnValue = EGLUtils::selectConfigForNativeWindow(dpy, s_configAttribs, window, &myConfig);
+    if (returnValue) {
+        printf("EGLUtils::selectConfigForNativeWindow() returned %d", returnValue);
+        return 1;
+    }
+
+    checkEglError("EGLUtils::selectConfigForNativeWindow");
+
+    printf("Chose this configuration:\n");
+    printEGLConfiguration(dpy, myConfig);
+
+    surface = eglCreateWindowSurface(dpy, myConfig, window, NULL);
+    checkEglError("eglCreateWindowSurface");
+    if (surface == EGL_NO_SURFACE) {
+        printf("gelCreateWindowSurface failed.\n");
+        return 1;
+    }
+
+    context = eglCreateContext(dpy, myConfig, EGL_NO_CONTEXT, context_attribs);
+    checkEglError("eglCreateContext");
+    if (context == EGL_NO_CONTEXT) {
+        printf("eglCreateContext failed\n");
+        return 1;
+    }
+    returnValue = eglMakeCurrent(dpy, surface, surface, context);
+    checkEglError("eglMakeCurrent", returnValue);
+    if (returnValue != EGL_TRUE) {
+        return 1;
+    }
+    eglQuerySurface(dpy, surface, EGL_WIDTH, &w);
+    checkEglError("eglQuerySurface");
+    eglQuerySurface(dpy, surface, EGL_HEIGHT, &h);
+    checkEglError("eglQuerySurface");
+    GLint dim = w < h ? w : h;
+
+    fprintf(stderr, "Window dimensions: %d x %d\n", w, h);
+
+    printGLString("Version", GL_VERSION);
+    printGLString("Vendor", GL_VENDOR);
+    printGLString("Renderer", GL_RENDERER);
+    printGLString("Extensions", GL_EXTENSIONS);
+
+    if(!setupYuvTexSurface(dpy, context)) {
+        fprintf(stderr, "Could not set up texture surface.\n");
+        return 1;
+    }
+
+    if(!setupGraphics(w, h)) {
+        fprintf(stderr, "Could not set up graphics.\n");
+        return 1;
+    }
+
+    for (;;) {
+        renderFrame();
+        eglSwapBuffers(dpy, surface);
+        checkEglError("eglSwapBuffers");
+    }
+
+    return 0;
+}