do this on drawing instead since SCREEN_OT_animation_step isnt calling the notifier (assume this is to be more efficient?). this isnt slow so is ok to do on drawing. rename BKE_image_user_calc_imanr to BKE_image_user_calc_frame
do this on drawing instead since SCREEN_OT_animation_step isnt calling the notifier (assume this is to be more efficient?). this isnt slow so is ok to do on drawing. rename BKE_image_user_calc_imanr to BKE_image_user_calc_frame