title: gluLookAt not working despite using Push/PopMatrix for transforms
body: <p>I'm trying to use gluLookAt in an Android app to move the "camera" around, but I'm not seeing any results.  I've looked around and I gather that any glLoadIndentity() calls will reset the matrix, cancelling the effect of the gluLookAt.</p>
  
  <p>Problem is, no matter what I put in my gluLookAt call, nothing moves.</p>
  
  <p>So here's the relevant part of my surface setup:</p>
  
  <pre><code>public void onSurfaceCreated(GL10 gl, EGLConfig config) {
      gl.glDisable(GL10.GL_DITHER);
      gl.glEnable(GL10.GL_TEXTURE_2D);
      gl.glShadeModel(GL10.GL_SMOOTH);
      gl.glClearColor(0f, 0f, 0f, 0.5f);
      gl.glClearDepthf(1.0f);
      gl.glEnable(GL10.GL_DEPTH_TEST);
      gl.glDepthFunc(GL10.GL_LEQUAL);
      gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST);
  }
  
  public void onSurfaceChanged(GL10 gl, int width, int height) {
      gl.glViewport(0, 0, width, height);
  
      gl.glMatrixMode(GL10.GL_PROJECTION);
      gl.glLoadIdentity();
      GLU.gluPerspective(gl, 45f, (float) width / (float) height, 0.01f, 200f);
  
      gl.glMatrixMode(GL10.GL_MODELVIEW);
  }
  </code></pre>
  
  <p>And then my frame-drawing method is:</p>
  
  <pre><code>public void onDrawFrame(GL10 gl) {
      gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
      GLU.gluLookAt(gl, 0, 0, 100, 0, 0, 0, 0, 1, 0);
  
      for (int i = 0; i &lt; obj.size; i++) { // obj is an array of positions
          obj = mObj[i];
  
          gl.glPushMatrix();
          gl.glLoadIdentity();
          gl.glTranslatef(obj.position.x(), obj.position.y(), obj.position.z());
          gl.glRotatef(obj.rotation.x(), 1f, 0f, 0f);
          gl.glRotatef(obj.rotation.y(), 0f, 1f, 0f);
          gl.glRotatef(obj.rotation.z(), 0f, 0f, 1f);
          obj.draw(gl); // the objects 'draw' themselves
          gl.glPopMatrix();
  
      }
  
  }
  </code></pre>
  
  <p>And here's an example of the draw() function of my objects, which essentially draw a bunch of elements:</p>
  
  <pre><code>class SomeObject {
  
      public void draw(GL10 gl) {
          gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
          gl.glEnableClientState(GL10.GL_NORMAL_ARRAY);
  
          gl.glEnable(GL10.GL_CULL_FACE);
          gl.glFrontFace(GL10.GL_CCW);
          gl.glCullFace(GL10.GL_BACK);            
  
          gl.glColor4f(1f, 0f, 0f, 1f);
          gl.glDrawElements(GL10.GL_TRIANGLES, SomeObject.fCount, GL10.GL_UNSIGNED_BYTE, faceBuffer);
          gl.glColor4f(1, 1, 1, 1);
  
          gl.glDisableClientState(GL10.GL_NORMAL_ARRAY);
          gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
      }
  }
  </code></pre>