scale and move to center,

performance is not very good. Takes very long to load

QtMeshViewer/Resources/vshader.glsl

@@ -5,6 +5,7 @@ precision mediump float;
 #endif
 
 uniform mat4 vp_matrix;
+uniform mat4 norm_matrix;
 uniform mat4 m_matrix;
 
 attribute vec4 a_position;
@@ -15,7 +16,7 @@ varying vec2 v_texcoord;
 void main()
 {
 	// Calculate vertex position in screen space
-	gl_Position = vp_matrix * m_matrix * a_position;
+	gl_Position = vp_matrix * norm_matrix * m_matrix * a_position;
 
 	// Pass texture coordinate to fragment shader
 	// Value will be automatically interpolated to fragments inside polygon faces