Blurry blocks (1.21.11+)

**Describe the bug**
Blocks appear to render very blurry, when compared to Better than Adventure!'s implementation

**To Reproduce**
observe block

**Screenshots**

<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/00264eee-d0e4-47b3-87ff-f147dc324579" />

**Please give the following:**
- GPU & Driver version: Linux mesa
