According to one of the latest updates, the resource pack is 75% complete, having most of the original textures replaced. This means that it may not be working with the latest versions of Minecraft. The developer continued to release updates for a while but it appears to have abandoned the project as of late. Made by user Marcolow, the texture pack managed to get well over a million downloads, making it one of the most popular resource packs in its category of photorealistic packs. Mainly Photo Realism was released a couple of years ago.
This was achieved in several ways with many visuals in Minecraft being altered for the better. It attempts to make the textures more realistic. One such pack that players have been enjoying is called the Mainly Photo Realism resource pack. To make the game just a bit more modern, you can try one of the many photorealistic resource packs. That is in most part due to the visual style that we are all familiar with. However, it is limited to a certain degree. It was written mostly in Java and for the most part, it runs on a reasonably capable engine. Minecraft does not use a fancy modern game engine.