diff --git a/opengl/tests/gl_basic/gl_basic.cpp b/opengl/tests/gl_basic/gl_basic.cpp
index 7dc2378..feb964a 100644
--- a/opengl/tests/gl_basic/gl_basic.cpp
+++ b/opengl/tests/gl_basic/gl_basic.cpp
@@ -1,32 +1,39 @@
 // Simple OpenGL ES 1.x application showing how to initialize and draw something.
 
-#include <EGL/egl.h>
+#include <EGL/egl.h>
+
 #include <GLES/gl.h>
 #include <GLES/glext.h>
 
 #include <ui/FramebufferNativeWindow.h>
 #include <ui/EGLUtils.h>
 
-#include <stdio.h>
+#include <stdio.h>
+
 #include <stdlib.h>
 #include <math.h>
 
 using namespace android;
-
-EGLDisplay eglDisplay;
-EGLSurface eglSurface;
-EGLContext eglContext;
-GLuint texture;
-
+
+EGLDisplay eglDisplay;
+EGLSurface eglSurface;
+EGLContext eglContext;
+GLuint texture;
+
 #define FIXED_ONE 0x10000
-#define ITERATIONS 50
-
-int init_gl_surface(void);
-void free_gl_surface(void);
-void init_scene(void);
-void render();
+#define ITERATIONS 50
+
+int init_gl_surface(void);
+void free_gl_surface(void);
+void init_scene(void);
+void render();
 void create_texture(void);
-int readTimer(void);
+int readTimer(void);
+
+static void printGLString(const char *name, GLenum s) {
+    const char *v = (const char *) glGetString(s);
+    fprintf(stderr, "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,
@@ -87,7 +94,6 @@
     glTranslatef(-eyeX, -eyeY, -eyeZ);
 }
 
-
 void printEGLConfiguration(EGLDisplay dpy, EGLConfig config) {
 
 #define X(VAL) {VAL, #VAL}
@@ -183,125 +189,129 @@
     free(configs);
     return true;
 }
-
-int main(int argc, char **argv)
-{
+
+int main(int argc, char **argv)
+{
     int q;
-    int start, end;
-
+    int start, end;
     printf("Initializing EGL...\n");
-
-    if(!init_gl_surface())
-    {
-        printf("GL initialisation failed - exiting\n");
-        return 0;
-    }
-
-    init_scene();
-
-    create_texture();
-
+    if(!init_gl_surface())
+    {
+        printf("GL initialisation failed - exiting\n");
+        return 0;
+    }
+    init_scene();
+    create_texture();
     printf("Running...\n");
-
     while(true) {
         render();
-    }
-
-    free_gl_surface();
-
-    return 0;
-}
-
-int init_gl_surface(void)
-{
-    EGLint numConfigs = 1;
-    EGLConfig myConfig = {0};
-    EGLint attrib[] =
-    {
-            EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
-            EGL_NONE
-    };
-
-    if ( (eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY)) == EGL_NO_DISPLAY )
-    {
-        printf("eglGetDisplay failed\n");
-        return 0;
     }
-
-    if ( eglInitialize(eglDisplay, NULL, NULL) != EGL_TRUE )
-    {
-        printf("eglInitialize failed\n");
-        return 0;
+    free_gl_surface();
+    return 0;
+}
+
+int init_gl_surface(void)
+{
+    EGLint numConfigs = 1;
+    EGLConfig myConfig = {0};
+    EGLint attrib[] =
+    {
+            EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+            EGL_NONE
+    };
+
+    if ( (eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY)) == EGL_NO_DISPLAY )
+    {
+        printf("eglGetDisplay failed\n");
+        return 0;
+    }
+    
+    if ( eglInitialize(eglDisplay, NULL, NULL) != EGL_TRUE )
+    {
+        printf("eglInitialize failed\n");
+        return 0;
     }
 
     if (! printEGLConfigurations(eglDisplay)) {
         printf("printEGLConfigurations failed.\n");
         return 0;
-    }
-    EGLNativeWindowType window = android_createDisplaySurface();
-    EGLUtils::selectConfigForNativeWindow(eglDisplay, attrib, window, &myConfig);
-
+    }
+
+    EGLNativeWindowType window = android_createDisplaySurface();
+    EGLUtils::selectConfigForNativeWindow(eglDisplay, attrib, window, &myConfig);
+
     if ( (eglSurface = eglCreateWindowSurface(eglDisplay, myConfig,
-            window, 0)) == EGL_NO_SURFACE )
-    {
-        printf("eglCreateWindowSurface failed\n");
-        return 0;
-    }
-
-    if ( (eglContext = eglCreateContext(eglDisplay, myConfig, 0, 0)) == EGL_NO_CONTEXT )
-    {
-        printf("eglCreateContext failed\n");
-        return 0;
-    }
-
-    if ( eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext) != EGL_TRUE )
-    {
-        printf("eglMakeCurrent failed\n");
-        return 0;
-    }
-
-    return 1;
-}
-
-void free_gl_surface(void)
-{
-    if (eglDisplay != EGL_NO_DISPLAY)
-    {
-        eglMakeCurrent( EGL_NO_DISPLAY, EGL_NO_SURFACE,
-                EGL_NO_SURFACE, EGL_NO_CONTEXT );
-        eglDestroyContext( eglDisplay, eglContext );
-        eglDestroySurface( eglDisplay, eglSurface );
-        eglTerminate( eglDisplay );
-        eglDisplay = EGL_NO_DISPLAY;
-    }
-}
-
-void init_scene(void)
-{
+            window, 0)) == EGL_NO_SURFACE )
+    {
+        printf("eglCreateWindowSurface failed\n");
+        return 0;
+    }
+
+    if ( (eglContext = eglCreateContext(eglDisplay, myConfig, 0, 0)) == EGL_NO_CONTEXT )
+    {
+        printf("eglCreateContext failed\n");
+        return 0;
+    }
+
+    if ( eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext) != EGL_TRUE )
+    {
+        printf("eglMakeCurrent failed\n");
+        return 0;
+    }
+    
+    int w, h;
+
+    eglQuerySurface(eglDisplay, eglSurface, EGL_WIDTH, &w);
+    checkEglError("eglQuerySurface");
+    eglQuerySurface(eglDisplay, eglSurface, 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);
+
+    return 1;
+}
+
+void free_gl_surface(void)
+{
+    if (eglDisplay != EGL_NO_DISPLAY)
+    {
+        eglMakeCurrent( EGL_NO_DISPLAY, EGL_NO_SURFACE,
+                EGL_NO_SURFACE, EGL_NO_CONTEXT );
+        eglDestroyContext( eglDisplay, eglContext );
+        eglDestroySurface( eglDisplay, eglSurface );
+        eglTerminate( eglDisplay );
+        eglDisplay = EGL_NO_DISPLAY;
+    }
+}
+
+void init_scene(void)
+{
     glDisable(GL_DITHER);
     glEnable(GL_CULL_FACE);
-
     float ratio = 320.0f / 480.0f;
     glViewport(0, 0, 320, 480);
-
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
     glFrustumf(-ratio, ratio, -1, 1, 1, 10);
-
-    glMatrixMode(GL_MODELVIEW);
+    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);
+    glEnable(GL_TEXTURE_2D);
+    glEnableClientState(GL_VERTEX_ARRAY);
     glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-}
-
-void create_texture(void)
-{
+}
+
+void create_texture(void)
+{
     const unsigned int on = 0xff0000ff;
     const unsigned int off = 0xffffffff;
     const unsigned int pixels[] =
@@ -314,44 +324,42 @@
             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);
-}
-
-void render()
-{
+    };
+
+    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);
+}
+
+void render()
+{
     int i, j;
-    int quads = 1;
-
-    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
-    };
-
+    int quads = 1;
+
+    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 indices[] = { 0, 1, 2,  0, 2, 3 };
-
-    glVertexPointer(3, GL_FLOAT, 0, vertices);
+
+    glVertexPointer(3, GL_FLOAT, 0, vertices);
     glTexCoordPointer(2, GL_FIXED, 0, texCoords);
-
     glClearColor(1.0, 1.0, 1.0, 1.0);
-
     int nelem = sizeof(indices)/sizeof(indices[0]);
     glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
     glDrawElements(GL_TRIANGLES, nelem, GL_UNSIGNED_SHORT, indices);
-    eglSwapBuffers(eglDisplay, eglSurface);
-}
-
+    eglSwapBuffers(eglDisplay, eglSurface);
+}