ine"></div><div class="line"><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* vertex_shader_text =</div><div class="line"><span class="stringliteral">&quot;#version 110\n&quot;</span></div><div class="line"><span class="stringliteral">&quot;uniform mat4 MVP;\n&quot;</span></div><div class="line"><span class="stringliteral">&quot;attribute vec3 vCol;\n&quot;</span></div><div class="line"><span class="stringliteral">&quot;attribute vec2 vPos;\n&quot