implemented light into cpp,

bug:
everything is dark,
need to calculate the normal matrix once in cpp and not for every pixel

QtMeshViewer/Source/OglViewerWidget.cpp

@@ -225,6 +225,10 @@ void OglViewerWidget::paintGL()
 	// Set view-projection matrix
 	m_program.setUniformValue("vp_matrix", m_projection * view);
 
+	// Set Light
+	m_program.setUniformValue("light.position", m_light.position);
+	m_program.setUniformValue("light.intensities", m_light.intensities);
+
 	// Draw cube geometry
 	m_dataEngine->drawGeometry(&m_program, m_wireframe);
 }