ass="line">    vcol_location = glGetAttribLocation(program, <span class="stringliteral">&quot;vCol&quot;</span>);</div><div class="line"></div><div class="line">    glEnableVertexAttribArray(vpos_location);</div><div class="line">    glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE,</div><div class="line">                          <span class="keyword">sizeof</span>(vertices[0]), (<span class="keywordtype">void</span>*) 0);</div><div class="line">    glEnableVertexAttribArray(vcol_location);</div>