Optimum Realism POM & PBR 64x/128x/256x/512x

# Changelog: Optimum Realism R4.2.0 64x → Optimum Realism R4.2.1 64x

## 🆕 New textures (3)

- `assets/minecraft/textures/block/grass_block_top_clean.png`
- `assets/minecraft/textures/block/grass_block_top_clean_n.png`
- `assets/minecraft/textures/block/grass_block_top_clean_s.png`

## ✨ Polish (9)

<details><summary>Show 9 smaller refinements</summary>

- `assets/minecraft/textures/block/pointed_dripstone_up_tip_merge_n.png` — 2.2%
- `assets/minecraft/textures/block/pointed_dripstone_up_tip_n.png` — 2.2%
- `assets/minecraft/textures/block/pointed_dripstone_down_tip_n.png` — 2.2%
- `assets/minecraft/textures/block/pointed_dripstone_down_tip_merge_n.png` — 2.1%
- `assets/minecraft/textures/block/pointed_dripstone_down_frustum_n.png` — 2.1%
- `assets/minecraft/textures/block/pointed_dripstone_up_middle_n.png` — 2.1%
- `assets/minecraft/textures/block/pointed_dripstone_up_frustum_n.png` — 2.1%
- `assets/minecraft/textures/block/pointed_dripstone_down_middle_n.png` — 2.1%
- `assets/minecraft/textures/block/pointed_dripstone_down_base_n.png` — 2.0%

</details>

## 🗑️ Removed (48)

- `assets/minecraft/textures/item/grass_block/1.png`
- `assets/minecraft/textures/item/grass_block/10.png`
- `assets/minecraft/textures/item/grass_block/10_n.png`
- `assets/minecraft/textures/item/grass_block/10_s.png`
- `assets/minecraft/textures/item/grass_block/11.png`
- `assets/minecraft/textures/item/grass_block/11_n.png`
- `assets/minecraft/textures/item/grass_block/11_s.png`
- `assets/minecraft/textures/item/grass_block/12.png`
- `assets/minecraft/textures/item/grass_block/12_n.png`
- `assets/minecraft/textures/item/grass_block/12_s.png`
- `assets/minecraft/textures/item/grass_block/13.png`
- `assets/minecraft/textures/item/grass_block/13_n.png`
- `assets/minecraft/textures/item/grass_block/13_s.png`
- `assets/minecraft/textures/item/grass_block/14.png`
- `assets/minecraft/textures/item/grass_block/14_n.png`
- `assets/minecraft/textures/item/grass_block/14_s.png`
- `assets/minecraft/textures/item/grass_block/15.png`
- `assets/minecraft/textures/item/grass_block/15_n.png`
- `assets/minecraft/textures/item/grass_block/15_s.png`
- `assets/minecraft/textures/item/grass_block/16.png`
- `assets/minecraft/textures/item/grass_block/16_n.png`
- `assets/minecraft/textures/item/grass_block/16_s.png`
- `assets/minecraft/textures/item/grass_block/1_n.png`
- `assets/minecraft/textures/item/grass_block/1_s.png`
- `assets/minecraft/textures/item/grass_block/2.png`
- `assets/minecraft/textures/item/grass_block/2_n.png`
- `assets/minecraft/textures/item/grass_block/2_s.png`
- `assets/minecraft/textures/item/grass_block/3.png`
- `assets/minecraft/textures/item/grass_block/3_n.png`
- `assets/minecraft/textures/item/grass_block/3_s.png`
- `assets/minecraft/textures/item/grass_block/4.png`
- `assets/minecraft/textures/item/grass_block/4_n.png`
- `assets/minecraft/textures/item/grass_block/4_s.png`
- `assets/minecraft/textures/item/grass_block/5.png`
- `assets/minecraft/textures/item/grass_block/5_n.png`
- `assets/minecraft/textures/item/grass_block/5_s.png`
- `assets/minecraft/textures/item/grass_block/6.png`
- `assets/minecraft/textures/item/grass_block/6_n.png`
- `assets/minecraft/textures/item/grass_block/6_s.png`
- `assets/minecraft/textures/item/grass_block/7.png`
- `assets/minecraft/textures/item/grass_block/7_n.png`
- `assets/minecraft/textures/item/grass_block/7_s.png`
- `assets/minecraft/textures/item/grass_block/8.png`
- `assets/minecraft/textures/item/grass_block/8_n.png`
- `assets/minecraft/textures/item/grass_block/8_s.png`
- `assets/minecraft/textures/item/grass_block/9.png`
- `assets/minecraft/textures/item/grass_block/9_n.png`
- `assets/minecraft/textures/item/grass_block/9_s.png`

---

_4864 files unchanged · 9 textures touched · 3 added · 48 removed · 0 setting files tweaked_