diff --git a/libs/utils/Threads.cpp b/libs/utils/Threads.cpp
index e5ece8e..f6c55e4 100644
--- a/libs/utils/Threads.cpp
+++ b/libs/utils/Threads.cpp
@@ -65,6 +65,20 @@
 
 typedef void* (*android_pthread_entry)(void*);
 
+static pthread_once_t gDoSchedulingGroupOnce = PTHREAD_ONCE_INIT;
+static bool gDoSchedulingGroup = true;
+
+static void checkDoSchedulingGroup(void) {
+    char buf[PROPERTY_VALUE_MAX];
+    int len = property_get("debug.sys.noschedgroups", buf, "");
+    if (len > 0) {
+        int temp;
+        if (sscanf(buf, "%d", &temp) == 1) {
+            gDoSchedulingGroup = temp == 0;
+        }
+    }
+}
+
 struct thread_data_t {
     thread_func_t   entryFunction;
     void*           userData;
@@ -80,6 +94,15 @@
         char * name = t->threadName;
         delete t;
         setpriority(PRIO_PROCESS, 0, prio);
+        pthread_once(&gDoSchedulingGroupOnce, checkDoSchedulingGroup);
+        if (gDoSchedulingGroup) {
+            if (prio >= ANDROID_PRIORITY_BACKGROUND) {
+                set_sched_policy(androidGetTid(), SP_BACKGROUND);
+            } else {
+                set_sched_policy(androidGetTid(), SP_FOREGROUND);
+            }
+        }
+        
         if (name) {
 #if defined(HAVE_PRCTL)
             // Mac OS doesn't have this, and we build libutil for the host too
@@ -281,22 +304,6 @@
 #endif
 }
 
-#if defined(HAVE_PTHREADS)
-static pthread_once_t gDoSchedulingGroupOnce = PTHREAD_ONCE_INIT;
-static bool gDoSchedulingGroup = true;
-
-static void checkDoSchedulingGroup(void) {
-    char buf[PROPERTY_VALUE_MAX];
-    int len = property_get("debug.sys.noschedgroups", buf, "");
-    if (len > 0) {
-        int temp;
-        if (sscanf(buf, "%d", &temp) == 1) {
-            gDoSchedulingGroup = temp == 0;
-        }
-    }
-}
-#endif
-
 int androidSetThreadSchedulingGroup(pid_t tid, int grp)
 {
     if (grp > ANDROID_TGROUP_MAX || grp < 0) { 
diff --git a/opengl/libs/EGL/egl.cpp b/opengl/libs/EGL/egl.cpp
index 5e61607..df21358 100644
--- a/opengl/libs/EGL/egl.cpp
+++ b/opengl/libs/EGL/egl.cpp
@@ -239,7 +239,7 @@
         memset(images, 0, sizeof(images));
     }
     EGLDisplay dpy;
-    EGLConfig context;
+    EGLContext context;
     EGLImageKHR images[IMPL_NUM_IMPLEMENTATIONS];
 };
 
@@ -1769,7 +1769,7 @@
          egl_connection_t* const cnx = &gEGLImpl[i];
          if (image->images[i] != EGL_NO_IMAGE_KHR) {
              if (cnx->dso) {
-                 if (cnx->egl.eglCreateImageKHR) {
+                 if (cnx->egl.eglDestroyImageKHR) {
                      if (cnx->egl.eglDestroyImageKHR(
                              dp->disp[i].dpy, image->images[i])) {
                          success = true;
diff --git a/opengl/tests/angeles/app-linux.cpp b/opengl/tests/angeles/app-linux.cpp
index 9f80ed4..4d10ee5 100644
--- a/opengl/tests/angeles/app-linux.cpp
+++ b/opengl/tests/angeles/app-linux.cpp
@@ -63,7 +63,7 @@
 int gAppAlive = 1;
 
 static const char sAppName[] =
-    "San Angeles Observation OpenGL ES version example (Linux)";
+        "San Angeles Observation OpenGL ES version example (Linux)";
 
 static int sWindowWidth = WINDOW_DEFAULT_WIDTH;
 static int sWindowHeight = WINDOW_DEFAULT_HEIGHT;
@@ -74,22 +74,22 @@
 const char *egl_strerror(unsigned err)
 {
     switch(err){
-    case EGL_SUCCESS: return "SUCCESS";
-    case EGL_NOT_INITIALIZED: return "NOT INITIALIZED";
-    case EGL_BAD_ACCESS: return "BAD ACCESS";
-    case EGL_BAD_ALLOC: return "BAD ALLOC";
-    case EGL_BAD_ATTRIBUTE: return "BAD_ATTRIBUTE";
-    case EGL_BAD_CONFIG: return "BAD CONFIG";
-    case EGL_BAD_CONTEXT: return "BAD CONTEXT";
-    case EGL_BAD_CURRENT_SURFACE: return "BAD CURRENT SURFACE";
-    case EGL_BAD_DISPLAY: return "BAD DISPLAY";
-    case EGL_BAD_MATCH: return "BAD MATCH";
-    case EGL_BAD_NATIVE_PIXMAP: return "BAD NATIVE PIXMAP";
-    case EGL_BAD_NATIVE_WINDOW: return "BAD NATIVE WINDOW";
-    case EGL_BAD_PARAMETER: return "BAD PARAMETER";
-    case EGL_BAD_SURFACE: return "BAD_SURFACE";
-//    case EGL_CONTEXT_LOST: return "CONTEXT LOST";
-    default: return "UNKNOWN";
+        case EGL_SUCCESS: return "SUCCESS";
+        case EGL_NOT_INITIALIZED: return "NOT INITIALIZED";
+        case EGL_BAD_ACCESS: return "BAD ACCESS";
+        case EGL_BAD_ALLOC: return "BAD ALLOC";
+        case EGL_BAD_ATTRIBUTE: return "BAD_ATTRIBUTE";
+        case EGL_BAD_CONFIG: return "BAD CONFIG";
+        case EGL_BAD_CONTEXT: return "BAD CONTEXT";
+        case EGL_BAD_CURRENT_SURFACE: return "BAD CURRENT SURFACE";
+        case EGL_BAD_DISPLAY: return "BAD DISPLAY";
+        case EGL_BAD_MATCH: return "BAD MATCH";
+        case EGL_BAD_NATIVE_PIXMAP: return "BAD NATIVE PIXMAP";
+        case EGL_BAD_NATIVE_WINDOW: return "BAD NATIVE WINDOW";
+        case EGL_BAD_PARAMETER: return "BAD PARAMETER";
+        case EGL_BAD_SURFACE: return "BAD_SURFACE";
+        //    case EGL_CONTEXT_LOST: return "CONTEXT LOST";
+        default: return "UNKNOWN";
     }
 }
 
@@ -118,52 +118,59 @@
         fprintf(stderr, "EGL Error: 0x%04x\n", (int)error);
 }
 
-static int initGraphics()
+static int initGraphics(unsigned samples)
 {
     EGLint configAttribs[] = {
-         EGL_DEPTH_SIZE, 16,
-         EGL_NONE
-     };
-     
-     EGLint majorVersion;
-     EGLint minorVersion;
-     EGLContext context;
-     EGLConfig config;
-     EGLSurface surface;
-     EGLint w, h;
-     EGLDisplay dpy;
+            EGL_DEPTH_SIZE, 16,
+            EGL_SAMPLE_BUFFERS, samples ? 1 : 0,
+                    EGL_SAMPLES, samples,
+                    EGL_NONE
+    };
 
-     EGLNativeWindowType window = android_createDisplaySurface();
-     
-     dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-     eglInitialize(dpy, &majorVersion, &minorVersion);
-          
-     status_t err = EGLUtils::selectConfigForNativeWindow(
-             dpy, configAttribs, window, &config);
-     if (err) {
-         fprintf(stderr, "couldn't find an EGLConfig matching the screen format\n");
-         return 0;
-     }
+    EGLint majorVersion;
+    EGLint minorVersion;
+    EGLContext context;
+    EGLConfig config;
+    EGLSurface surface;
+    EGLint w, h;
+    EGLDisplay dpy;
 
-     surface = eglCreateWindowSurface(dpy, config, window, NULL);
-     egl_error("eglCreateWindowSurface");
+    EGLNativeWindowType window = android_createDisplaySurface();
 
-     fprintf(stderr,"surface = %p\n", surface);
+    dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    eglInitialize(dpy, &majorVersion, &minorVersion);
 
-     context = eglCreateContext(dpy, config, NULL, NULL);
-     egl_error("eglCreateContext");
-     fprintf(stderr,"context = %p\n", context);
-     
-     eglMakeCurrent(dpy, surface, surface, context);   
-     egl_error("eglMakeCurrent");
+    status_t err = EGLUtils::selectConfigForNativeWindow(
+            dpy, configAttribs, window, &config);
+    if (err) {
+        fprintf(stderr, "couldn't find an EGLConfig matching the screen format\n");
+        return 0;
+    }
 
-     eglQuerySurface(dpy, surface, EGL_WIDTH, &sWindowWidth);
-     eglQuerySurface(dpy, surface, EGL_HEIGHT, &sWindowHeight);
+    surface = eglCreateWindowSurface(dpy, config, window, NULL);
+    egl_error("eglCreateWindowSurface");
+
+    fprintf(stderr,"surface = %p\n", surface);
+
+    context = eglCreateContext(dpy, config, NULL, NULL);
+    egl_error("eglCreateContext");
+    fprintf(stderr,"context = %p\n", context);
+
+    eglMakeCurrent(dpy, surface, surface, context);
+    egl_error("eglMakeCurrent");
+
+    eglQuerySurface(dpy, surface, EGL_WIDTH, &sWindowWidth);
+    eglQuerySurface(dpy, surface, EGL_HEIGHT, &sWindowHeight);
 
     sEglDisplay = dpy;
     sEglSurface = surface;
     sEglContext = context;
 
+    if (samples == 0) {
+        // GL_MULTISAMPLE is enabled by default
+        glDisable(GL_MULTISAMPLE);
+    }
+
     return EGL_TRUE;
 }
 
@@ -179,11 +186,14 @@
 
 int main(int argc, char *argv[])
 {
-    // not referenced:
-    argc = argc;
-    argv = argv;
+    unsigned samples = 0;
+    printf("usage: %s [samples]\n", argv[0]);
+    if (argc == 2) {
+        samples = atoi( argv[1] );
+        printf("Multisample enabled: GL_SAMPLES = %u\n", samples);
+    }
 
-    if (!initGraphics())
+    if (!initGraphics(samples))
     {
         fprintf(stderr, "Graphics initialization failed.\n");
         return EXIT_FAILURE;
@@ -195,7 +205,7 @@
     int frameCount = 0;
     gettimeofday(&timeTemp, NULL);
     double totalTime = timeTemp.tv_usec/1000000.0 + timeTemp.tv_sec;
-    
+
     while (gAppAlive)
     {
         struct timeval timeNow;