The Stratum Resource Pack is fully compatible with PBR (Physically Based Rendering). This means that when paired with shaderpacks like Continuum 2.0, light will interact with the textures provided by Stratum the same way it would in the real world.
Stratum also supports POM (Parallax Occlusion Mapping). POM is a graphical effect that simulates 3D details in textures by utilizing depth information stored in their height map. This greatly enhances the overall look of the textures and the overall realism. POM creates details such as the raised stones in the cobblestone blocks surface, to the gaps between boards in the wooden plank textures and more. Check out these screenshots for examples of POM in action.
Stratum also includes high quality normal and specular maps. In combination with shaders Stratum uses it’s normal maps to give more small details to bumps or indents in it’s textures. The specular maps are used to define the amount of reflectivity different textures have. This feature is what gives some textures the ability to reflect a lot of light, and others a duller look with very little reflectivity.