PCP17: Sparkly Ice! (Patreon)

Not a huge amount of blocks, but a lot of work went into what's there! This update mostly adds shader maps to ice, but also continues to fill out the roster of deepslate blocks with both brick types. Only chiseled left to go! And yes, like snow the ice is also sparkly, but it's so shiny to begin with that it'll be most noticeable inside shaded ice structures or at night.. :P Also regarding shaders, the slime block should be much more performance-friendly and tile much better on all sides now.

Changelog
-Added textures and random CTM support for deepslate bricks and cracked deeplsate bricks (32 tiles total)
-Reworked Slime block model to be more performance efficient with shaders.
-Tweaked frosted ice models to be more performance efficient.

---Shader Support---

-Updated BSL config for BSL_v8.1.02.3d.
-Added normals and specular maps for all 4 ice types and all CTM associated with them. (398 tiles total)
-Reworked normals for slime block to improve tiling.