fixed the light problem,

very basic light at the moment, needs a lot of work:
- custom position,
- custom intensities,
- calculate at better positions,
others:
- adjust zoom speed

QtMeshViewer/Resources/fshader.glsl

@@ -4,8 +4,9 @@ precision mediump int;
 precision mediump float;
 #endif
 
-uniform mat3 n_matrix;
+//uniform mat3 n_matrix;
 uniform sampler2D texture;
+uniform mat4 norm_matrix;
 uniform mat4 m_matrix;
 
 uniform struct Light {
@@ -21,7 +22,7 @@ varying vec3 v_normal;
 
 void main()
 {
-	mat3 normalMatrix = transpose(inverse(mat3(m_matrix)));
+	mat3 n_matrix = transpose(inverse(mat3(norm_matrix * m_matrix)));
 	vec3 normal = normalize(n_matrix * v_normal);
 
 	vec3 surfaceToLight = light.position - v_position;