ss="constant">GL_VERTEX_SUBROUTINE_UNIFORM</code>, <code class="constant">GL_TESS_CONTROL_SUBROUTINE_UNIFORM</code>,
                                            <code class="constant">GL_TESS_EVALUATION_SUBROUTINE_UNIFORM</code>, <code class="constant">GL_GEOMETRY_SUBROUTINE_UNIFORM</code>,
                                            <code class="constant">GL_FRAGMENT_SUBROUTINE_UNIFORM</code>, <code class="constant">GL_COMPUTE_SUBROUTINE_UNIFORM</code></td>
              </tr>
              <tr>
          