glNoise
OpenSimplex2
glNoise | OpenSimplex2 | |
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1 | 24 | |
222 | 529 | |
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2.9 | 4.6 | |
8 months ago | 3 months ago | |
GLSL | Java | |
MIT License | Creative Commons Zero v1.0 Universal |
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glNoise
OpenSimplex2
- Sweeping Quad Lines - Gallery One
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I finally nailed the smooth rotation of a noise field. No unsteady or flickering edges anymore. No quality loss no matter what the actual rotation angle is.
Wow you have been playing with noise for a while :) . It amazes me all the different noises that exist now.. Perlin, Simplex, OpenSimplex, OpenSimplex2S, OpenSimplex2F, Worley... If you are curious about OpenSimplex https://github.com/KdotJPG/OpenSimplex2
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Some of the results of my work-in-progress tool to generate random tile-based worlds. (More info in comments)
Probably true, although a neat repo for open simplex is https://github.com/KdotJPG/OpenSimplex2
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Value Noise Resources
This may not answer what you're actually looking for - but a few years ago I found a library for coherent noise in Java, which at least meets my needs. I use bits and pieces of the Open Simplex Noise implementation from that library. It's unlicense/CC0, so easily copy-paste-able straight in to one's own project. https://github.com/KdotJPG/OpenSimplex2/
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Question about OpenSimplex2S
So I was looking for a noise function, and I found this repo from the author of the OpenSimplex algorithm. And in the GLSL implementation, which is the one I'm gonna use, since I want to generate terrain with compute shaders, the function%20%7B) looks like this:
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How would you loop a 3D noise?
If you want to feel safer from that, you might opt to use one of these instead. Use the ImproveXY endpoint to get a Z that repeats after 500.5626833874055. Go up one directory and into the glsl directory if you need GLSL versions instead .
- C# Simplex noise library offering 1D, 2D, and 3D forms
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Map + River generation using the "Lanczos Value-Noise" I wrote [Details in the comments]
Fair. I definitely agree Simplex has some characteristics that don't work great in some places. Especially when you threshold near zero of a single octave. Have you tried OpenSimplex2S? It's made to be less "bubbly" than standard simplex. In own repo, In FastNoiseLite, [Shader preview (3D noise)[https://www.shadertoy.com/view/ttdGR8]. Both the 2D function and 2D slices of the 3D function might be worth looking into if you haven't yet.
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Need some help making the GLSL implementation of OpenSimplex2 tileable
Here's a link to the original implementation: github.com/KdotJPG/OpenSimplex2/blob/master/glsl/OpenSimplex2.glsl
- Oh cool, i just found this sub reddit and had a few questions on my current project.
What are some alternatives?
crt-240p-scale-shader - RetroArch GLSL shader for 240p CRT output
FastNoise - Fast Portable Noise Library - C# C++ C Java HLSL GLSL JavaScript Rust Go
FastNoise2 - Modular node graph based noise generation library using SIMD, C++17 and templates
shader-web-background - Displays GLSL fragment shaders as a website background. Supports offscreen buffers and floating point textures on almost any browser and hardware. Compatible with Shadertoy.
simplex - Simplex noise implementation offering 1D, 2D, and 3D forms.
minecraft-miniature-shader - In-style lighting and reflection shader for Minecraft
webgl-noise - Procedural Noise Shader Routines compatible with WebGL
webgl-starfield - Procedural Parallax Starfields in WebGL
LearnOpenGL - Code repository of all OpenGL chapters from the book and its accompanying website https://learnopengl.com
thebookofshaders - Step-by-step guide through the abstract and complex universe of Fragment Shaders.
3DWorld - 3D Procedural Game Engine Using OpenGL