Wynn PBR is a work in progress resource pack for the ones who are crazy enough to play Wynncraft with Shaders. As the name suggest this pack adds PBR textures (Physically Based Rendering), so called normal maps and specular maps for the base Wynncraft textures. With these textures Shaders can do some neat stuff (if supported) like make gold shiny or add shading to the blocks.
CONTENTS
The pack is made in the LabPBR Material Standard. It is a format created by the Minecraft shader developer community to achieve a more consistent support across shader.
This means most shaders will work with this pack.
I made use of most of the features that this standard provides.
Additionally, I've created 3D models for doors, rails and some of the ores.
!Very important!
Modifications to the base texture:
The official Wynncraft resource pack was not created with these features in mind thus the cartoony art work contains on most of the textures shading and highlights. This can be seen for example on the diamond block. These drawn-in aspects overlap with the graphic effects a shader would do. Therefore, I have made the decision to modify the base textures where I saw this necessary. So, I removed bright highlight spots and darkened areas.
Example Picture 
INSTRUCTIONS
First off all you need Optifine if that wasn't obvious. Without it nothing will work.
Wynn PBR is intended to be a sort like add-on so it won't work without the base Wynncraft pack.
You need the Wynncraft resource pack in your resource pack folder. Here is a guide on how to get it. https://forums.wynncraft.com/threads/how-to-install-the-wynncraft-official-texture-pack.255268/
Just place Wynn PBR on top of it in the resource pack selection.
In the Shader Options you need to look for something like Material, Surfaces or Terrain under these sections there should be an option where you select the LabPBR 1.3 standard. Every shader has a different options menu so I can give only vague directions here.
DISCLAIMERS:
I am not a professional texture artist! I only possess a basic understanding of modern rendering tech.
All of the textures have been created with my interpretation of the Wynncraft Textures. This means these are subject to taste and may not represent the original intended look.
This is a work in progress pack. Not every Block, Mob or item has received a normal or specular texture yet. Also, there are quality differences between the textures.
In the end the Shader does the visual effects. This means things can look different depending on the Shader. And this also means that the Shader has to support the feature, for example not every shader supports subsurface scattering.