To unlock the full potential of PBR features like emission, normal maps, and dynamic reflections, you use a compatible shader pack. Recommended ones include:
The first step would be to extract the contents of the zip file to a directory on your computer. Then, you would run the executable file (often with a .exe extension on Windows). patrix-1.16-128x-basic.zip
: Shaders supporting normal and specular mapping To unlock the full potential of PBR features