! test that when changing the model, the gadget updates the texture.
! - same size images (both smaller than 512x512) (updates)
! test that when changing the model, the gadget creates a new texture.
-! test different cases :
+! test different cases :
! - same size images (both bigger than 512x512) (creates)
! - different size images (both smaller than 512x512) (creates)
! - different size images (both bigger than 512x512) (creates)