message: Pass Image by const& in v2::extract_texture
diff: @@ -545,7 +545,7 @@ namespace v2 {
  * @return The extracted texture as isomap (texture map).
  */
  eos::core::Image4u extract_texture(const core::Mesh& mesh, glm::mat4x4 view_model_matrix, glm::mat4x4 projection_matrix,
  - glm::vec4 /*viewport, not needed at the moment */, eos::core::Image4u image,
  + glm::vec4 /*viewport, not needed at the moment */, const eos::core::Image4u& image,
  bool /* compute_view_angle, unused atm */, int isomap_resolution = 512)
  {
  using detail::divide_by_w;
  