Pigmentum API

🎨 Pigmentum – Minecraft Canvas API

Turn every block surface into your personal canvas. Paint pixel by pixel on any surface in Minecraft.

Pigmentum is a low-level canvas API for NeoForge mod developers.

Out-of-the-box painting features (brushes, GUI, blend modes) will be developed separately at Fresco.

Pigmentum focuses on providing the core canvas infrastructure and extension API.

✨ Features

🖌️ Canvas System

• Any Block as Canvas: Right-click any block surface with a paintbrush to turn it into a canvas that blends seamlessly with the block.
• Pixel-Level Drawing: Hold right-click and drag to draw smooth, continuous lines—no gaps even at high speed.
• Multi-Face Canvases: Paint independently on each face of a block—top, bottom, and all four sides.
• Irregular Block Support: Stairs, slabs, fences, and other shaped blocks can be painted with pixel-perfect precision.
• Brush Configuration Menu: Right-click the air with a paintbrush to adjust brush size, feathering, blend mode, and drawing interval.

🎯 Paintbrush System

• Color Picker: Press the R key to sample the color of the pixel under your crosshair.
• Multiple Blend Modes: Choose from Overwrite, Additive, Multiply, and Erase.

📦 Canvas Extraction & Display

• Canvas Sheet Item: Sneak-right-click a painted block to copy one face onto a Canvas Sheet without removing the original.
• Item Frame Display: Place a Canvas Sheet in an item frame to display your artwork like a map.

🧩 Extension API

• Custom Image Providers (CanvasImageProvider) — register custom texture generation from pixel data
• Custom Renderers (CanvasPixelRenderer) — control how canvas faces are rendered
• Per-Pixel Effect Layers — attach arbitrary byte data per pixel (e.g. glow intensity, roughness)
• Custom Blend Functions (BlendFunction) — full control over pixel color and effect compositing
• Custom Paint Brushes (IPaintProvider) — register any item as a brush with custom behavior

🎮 Getting Started

1. Obtain a paintbrush from the creative inventory.
2. Right-click any block surface to create a canvas.
3. Hold right-click and drag to paint pixels.
4. Press the R key to pick a color from the world.
5. Right-click the air to adjust your brush settings.
6. Use a Canvas Sheet to extract and display your artwork in item frames.

Pigmentum – Every face is a canvas.