params</code></em> returns
                    <code class="constant">GL_VERTEX_SHADER</code> if
                    <em class="parameter"><code>shader</code></em> is a vertex shader
                    object, <code class="constant">GL_GEOMETRY_SHADER</code> if <em class="parameter"><code>shader</code></em>
                    is a geometry shader object, and <code class="constant">GL_FRAGMENT_SHADER</code>
                    if <em class="parameter"><code>shader</code></em> is a fragment
                