BraineyBites - Procedural Eye Generator | Fully Node-Based Eye Shader for Blender V1.0

A fully procedural, node-based eye shader for Blender. One click builds a complete, fully controllable eye — no manual shading required.

Tutorial: https://youtu.be/Dquepno4usE

1. What's Included

• The ZIP file contains the Procedural Eye Generator add-on, installable directly through Blender's Add-ons preferences.
• One-Click Eye Generation
• Fully Node-Based Shader
• Built-In Geometry Detail
• Modifier Compatibility
• Works With Any Character

2. Key Features2.1 Iris & Pupil

• Independent iris and pupil color (inner / outer + blend)
• Pupil size and scale
• Matching shape-preset system on both pupil and iris — Squircle, Diamond, Sides, Depth, Rotate, Triangle
• Independent iris scale (X / Y)

2.2 Veins & Redness

• Vein color, scale, strength, thickness
• Capillary multiplier and vein reach
• Dedicated back-of-eye redness system — zone size, intensity, reach, fade, noise

2.3 Surface Detail & Patterns

• Iris roughness, bump strength, distortion, fiber detail (strength / scale / detail / roughness / distortion / noise)
• Multiple built-in pattern layers — radial lines, rings, noise, cells, wave, brick, magic, cracks
• Sclera roughness, subsurface weight, eye-wetness controls

2.4 Emission & Glow

• Every color element — iris inner/outer, pupil, sclera, limbal ring/border, veins, every pattern layer — has its own independent emission strength
• Built for glowing / supernatural / sci-fi eye designs (switch to Rendered view to preview)
• Requires the Color Override toggle to be enabled above a color field before edits take effect (see § 5)

2.5 Procedural Surface Geometry

• Geometry Nodes modifier adds real displaced detail: subdivision level, corneal bulge (height / radius / falloff), pupil depth, iris forward tilt, limbal groove, and more
• A fast, strong starting point — not a substitute for hand-sculpted photoreal detail (see § 6)

3. Compatibility & Requirements

• Blender 4.0x + [built & recorded in Blender 4.5.x LTS]
• Render engine: [confirm EEVEE / Cycles / both]
• Shader + Geometry Nodes setup only — no external textures or add-ons required

4. Installation

1. Download the ZIP file. (and extract first)
2. In Blender: Edit → Preferences → Add-ons → Install from Disk.
3. Select the downloaded ZIP.
4. Enable the add-on in the Preferences list.

5. Quick Start

1. Hit Shift+A (or use the Add menu) → select BPEG Eye.
2. A fully procedural eye is added to the scene.
3. Switch the viewport to Rendered shading, open a Shader Editor to find the Principal Eye Shader node.
4. Adjust any control listed in § 2 directly on that node.
5. Before changing any color field, enable its Color Override toggle first — otherwise the edit won't apply. This is the most common first-time snag.
6. For emission/glow effects, confirm you're in Rendered view, then raise the relevant Strength value.

6. Known Limitations

• This is a procedural base, not a 1:1 replacement for hand sculpting. It will not produce fully photoreal detail on its own.
• For true photoreal accuracy, manual sculpting on top of the generated base is still recommended.
• Modifiers (Geometry Nodes detail layer) are Blender-native — apply them before exporting to other software.

7. Support & Links

📢 Stay Connected & Learn More

If you'd like to see more of my work, behind-the-scenes sculpting timelapses, and tips on anime-style or realistic character creation, check out my platforms:

• 🔹 YouTube: https://www.youtube.com/@braineybites
• 🔹 Website: https://www.BraineyBites.com
• 🔹 ArtStation: https://www.artstation.com/braineybites
• 🔹 Patreon: https://www.patreon.com/c/BraineyBites

8. License / Usage Terms

Free for personal + commercial use, no reselling/redistributing the plugin file itself, share the link instead of the file.