   <code class="constant">GL_TEXTURE_CUBE_MAP_POSITIVE_Y</code>, <code class="constant">GL_TEXTURE_CUBE_MAP_POSITIVE_Z</code>,
            <code class="constant">GL_TEXTURE_CUBE_MAP_NEGATIVE_X</code>, <code class="constant">GL_TEXTURE_CUBE_MAP_NEGATIVE_Y</code>, or
            <code class="constant">GL_TEXTURE_CUBE_MAP_NEGATIVE_Z</code>.
        </p><p>
            If  <em class="parameter"><code>textarget</code></em> is  <code class="constant">GL_TEXTURE_RECTANGLE</code>, <code class="constant">GL_TEXTURE_