https://github.com/curly-brace/godot-3.0-noise-shaders

Godot 3.0 Noise Shaders
https://github.com/curly-brace/godot-3.0-noise-shaders

godot godot-engine godot-game-engine godot-shader godotengine noise-algorithms noise-generator shaders

Last synced: 4 months ago
JSON representation

Godot 3.0 Noise Shaders

• Host: GitHub
• URL: https://github.com/curly-brace/godot-3.0-noise-shaders
• Owner: curly-brace
• License: mit
• Created: 2017-08-30T13:37:44.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2017-08-30T14:20:18.000Z (over 7 years ago)
• Last Synced: 2024-09-23T13:02:41.568Z (5 months ago)
• Topics: godot, godot-engine, godot-game-engine, godot-shader, godotengine, noise-algorithms, noise-generator, shaders
• Size: 24.4 KB
• Stars: 46
• Watchers: 5
• Forks: 4
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# Different noise shaders For Godot Engine 3.0

A port of https://github.com/ashima/webgl-noise

You can use those noises in your gdscripts using the technique shown here:

https://github.com/curly-brace/Godot-Simplex

Consists of:

- worley 2d

- worley with 2x2 window instead of 3x3

- worley 3d

- worley 3d with 2x2x2 window instead of 3x3x3

- perlin 2d

- perlin 3d

- perlin 4d

- simplex 2d

- simplex 3d

- simplex 3d with analytic derivative gradient output

- simplex 4d

- and last is 'psrdnoise' monster with 4:

  - 2-D non-tiling simplex noise with rotating gradients, without the analytical derivative

  - 2-D non-tiling simplex noise with rotating gradients and analytical derivative

  - 2-D tiling simplex noise with rotating gradients, without the analytical derivative

  - 2-D tiling simplex noise with rotating gradients and analytical derivative

 

Analytical derivatives return vec3 with first element is a vector of the noise value. And 2nd and 3rd are x and y partial derivatives.

You can test any of the shaders by creating a Sprite node, creating new ImageTexture for it (size like 256x256 would be fine), creating new shader material for it and loading desired shader to it. (try simplex3d.tres ^_^ )

All shaders have offset and scale parameters. Set scale to something like 8 to see the noise better.

Worley shaders have jitter parameter that with 0 value will output perfect squares.

More info on original repo:

https://github.com/ashima/webgl-noise/wiki

#### Drawbacks:

godot does not support (currently) in shaders: constants, inline functions, defines, for loops, better swizzling. So code is not as efficient as it could be.