Vanillaccurate is a vanilla-styled resource pack that employs (extremely) high-resolution details while retaining the original 1616 looks. It makes use of photographic textures (mostly homemade) and some procedural elements to achieve the best possible look with high-end shaders. It is also PBR compliant and fully supports the LabPBR standard with all of its features (normals, heightmap/POM, ambient occlusion, smoothness, reflectance, subsurface scattering, porosity, emissiveness), which means that the materials will look exactly like they do in real life when used with an appropriate shader, using accurate representations of real-life light parameters.