Solid Noise Generator — Krita Plugin
A Krita plugin that generates solid Perlin noise at your canvas resolution. Supports configurable octave detail, scale, seed, and invert. Output is always contrast-stretched so the darkest pixel is pure black and the brightest is pure white.
Installation
- In Krita, go to Tools → Scripts → Import Python Plugin from File…
- Select
solid_noise_plugin.zip - Restart Krita
- Go to Settings → Configure Krita → Python Plugin Manager, check Solid Noise Generator, click OK
- Restart Krita again
- Open the docker via Settings → Dockers → Solid Noise Generator
Manual install: If you prefer, extract the zip and copy
solid_noise.desktopand thesolid_noise/folder into your Kritapykritadirectory:
- Linux/macOS:
~/.local/share/krita/pykrita/- Windows:
%APPDATA%\krita\pykrita\
Controls
| Control | Description |
|---|---|
| Octaves (1–16) | Number of noise layers stacked together. 1 is smooth and cloud-like; 16 is highly detailed. Each octave doubles the frequency and halves the amplitude. |
| Scale | Zoom level of the noise pattern. Higher values show more features across the canvas. |
| Seed | Determines the random pattern. Same seed always produces the same result. Hit Random for a new one. |
| Invert | Flips light and dark values. |
| Generate on new layer | When checked, noise is painted onto a new layer so your existing content is untouched. |
Performance
On first use the plugin compiles a small C noise kernel using gcc (available by default on Linux, and via Xcode Command Line Tools on macOS). This makes generation very fast — around 0.1–0.5 seconds at 1080p depending on octave count. The status bar shows [C] when the fast path is active.
If gcc is not found, the plugin falls back to a pure Python implementation automatically — same results, just slower.
How it works
Perlin noise is computed using fractal Brownian motion (fBm): multiple octaves of noise are summed, each at double the frequency and half the amplitude of the last:
value = Σ 0.5^i × perlin(x × 2^i, y × 2^i)
i=0..octaves-1
After all octaves are accumulated, the result is contrast-stretched so the minimum value maps to pure black (0) and the maximum to pure white (255), guaranteeing full tonal range regardless of settings.