I just got a Minecraft shader package and since then have had a problem with these textures, I also installed Chroma Hills as a resource package and RLCraft
With some modpacks, certain shaders are broken.
Try Sildur's or Chocapic 13, they should go.
Have now got sildurs now the same textures are recognizable but very extremely bright and white
These are modpacks that are incorrectly compatible with shaders. Do you just have to try it out…