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1answer
144 views

How do I create the terrain mentioned in GPU Gems 3

So, i want to create this style of terrain: http://http.developer.nvidia.com/GPUGems3/gpugems3_ch01.html However, as much as I scour the web trying to find ways to implement this inside Unity, I can'...
5
votes
1answer
190 views

How do I perform interpolation between noise values sampled at a lower resolution?

I'm doing some experimentation with terrain generating using a method similar to that described in this blog post by Markus Persson, where I use 3D simplex noise as a "density" value. Like him, ...
0
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0answers
17 views

Perlin simplex noise transformations

I am programming the simplex noise and I am a bit confusing about about the transformations between simplex and regular grid. I understand it this way: I start in simplex grid. Then I transform input ...
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0answers
12 views

Simplex noise input problem

I am running simplex noise on a compute shader and am having problems getting an even(ish) distribution, with very obvious errors. I know this is due to particular inputs used but I have no bases for ...
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0answers
53 views

How do I create tileable 3D Perlin/Simplex noise?

I have a library which provides functions for 1/2/3/4-D simplex noise. With that I successfuly created a tileable 2D cloud texture (see How do you generate tileable Perlin noise?). Now I want to ...
1
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1answer
53 views

Heightmap using Simplex noise with octaves: help with parameters and interpretation

I've found a few pieces of code around, where Java code for Simplex noise (based on this widely quoted paper) was coupled with octaves to get a heightmap. However those classes/snippets are NOT in the ...
1
vote
1answer
77 views

Deterministically shuffling of array

I couldn't find an answer to this so I'm asking here, I've made a voxel engine and it's working reasonably well, except for a small detail: I have yet to figure out how to seed my simplex noise engine,...
2
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2answers
161 views

2D Simplex Smooth Cave Generation

So I'm creating a system of caves below my random terrain generation, and I'm using 2D Simplex Noise to do so and I have a pretty good grasp on generating the random caves. However, the cutoff from ...
1
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1answer
86 views

1D Simplex Noise Returns Same Generation

I've been using 1D Simplex Noise to create a random world surface, and it keeps generating with the same looking surface terrain, with some minor variations. Here is my sample code- Tile[][] tiles = ...
1
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1answer
444 views

Stepping through 3D noise to generate a cubemap for a sphere

This is somewhat related to a previous question I asked How to create a seamless cubemap noise texture? I have managed to successfully step through a 3D noise function to create a cubemap texture ...
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0answers
25 views

Placing tiles on 2D Simplex noise [duplicate]

I have been experimenting with 2D Simplex noise for a mini-project and while I cannot say I understand the maths behind it, I begin to feel quite confident with how I can manipulate it to get ...
1
vote
1answer
201 views

Why is my Simplex Noise appearing in four columns?

I'm trying to make a Texture out of Simplex noise, but it keeps appearing like this regardless of how big or small scale is: The following code is used to produce the image's color date: private ...
0
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1answer
227 views

Java: Irrelative Simplex Noise [closed]

I am stuck in another problem with Noise(I´ve never did this before). Now Terrain is generating and its quite well but its Irrelative to each other. Here is a screenshot As you might notice Each ...
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0answers
42 views

Wrapping 3D noise functions like simplex and perlin in c# [duplicate]

I'm experimenting with loop-able worlds that have a height-map for terrain data. While I can easily create loop-able .BMP textures for this in Photoshop and just load the terrain from them, but that ...
4
votes
1answer
121 views

Does a patch of simplex noise sum up to zero?

Just for interest, when sampling simplex noise in any given dimension, would the sum of all samples run towards zero?