title: GL ERROR: 1282 - Invalid operation
body: <p>My code  is this:</p>
  
  <pre><code>   glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
      glEnable(GL_TEXTURE_2D);
  
      glBegin(GL_TRIANGLES);
  
      int bunnyDisplayList = glGenLists(1);
      glNewList(bunnyDisplayList, GL_COMPILE);
  
      List&lt;Model&gt; models = NPC.getModels();
  
      glBegin(GL_TRIANGLES);
  
      for (Model m : models) {
          for (Model.Face face : m.getFaces()) {
              Vector3f n1 = addVectors(m.getNormals().get(face.getNormalIndices()[0] - 1), m.getPosition());
              glNormal3f(n1.x, n1.y, n1.z);
              Vector3f v1 = addVectors(m.getVertices().get(face.getVertexIndices()[0] - 1), m.getPosition());
              glVertex3f(v1.x, v1.y, v1.z);
              Vector3f n2 = addVectors(m.getNormals().get(face.getNormalIndices()[1] - 1), m.getPosition());
              glNormal3f(n2.x, n2.y, n2.z);
              Vector3f v2 = addVectors(m.getVertices().get(face.getVertexIndices()[1] - 1), m.getPosition());
              glVertex3f(v2.x, v2.y, v2.z);
              Vector3f n3 = addVectors(m.getNormals().get(face.getNormalIndices()[2] - 1), m.getPosition());
              glNormal3f(n3.x, n3.y, n3.z);
              Vector3f v3 = addVectors(m.getVertices().get(face.getVertexIndices()[2] - 1), m.getPosition());
              glVertex3f(v3.x, v3.y, v3.z);
          }
      }
      glEnd();
      glEndList();
  </code></pre>
  
  <p>The models get drawn(but in a transparent way), but every time I call this function I get the following error:</p>
  
  <pre><code>GL ERROR: 1282 - Invalid operation
  </code></pre>