Bleuje

//--------------------------------------------------------------------------//
// Force field animator by Etienne Jacob (www.necessary-disorder.tumblr.com)//
// Processing code (https://processing.org)                                 //
// Saves frames, then you must use something else to make the GIF           //
//--------------------------------------------------------------------------//
/// This code starts with the rendering system I took from @beesandbombs
/// (it also contains some useful functions and stuff)
/// You don't have to understand it
/// Just know that it does an average on many drawings to get a motion blur effect
/// from drawings parametrized by the global variable t going from 0 to 1

Bleuje

//--------------------------------------------------------------------------//
// Flow field animator by Etienne Jacob (www.necessary-disorder.tumblr.com) //
// Processing code (https://processing.org)                                 //
// Saves frames, then you must use something else to make the GIF           //
//--------------------------------------------------------------------------//
/// This code starts with the rendering system I took from @beesandbombs
/// (it also contains some useful functions and stuff)
/// You don't have to understand it
/// Just know that it does an average on many drawings to get a motion blur effect
/// from drawings parametrized by the global variable t going from 0 to 1

Bleuje

// Processing code by Etienne JACOB
// motion blur template by beesandbombs
// opensimplexnoise code in another tab might be necessary
// --> code here : https://gist.github.com/Bleuje/fce86ef35b66c4a2b6a469b27163591e

int[][] result;
float t, c;

float ease(float p) {
  return 3*p*p - 2*p*p*p;

jamiekurtz

# 1. download zip from https://launchpad.net/kazam
# 2. extract into target folder

# install prerequisites (works on Fedora 21 with Python 3)
sudo yum install python3-distutils-extra python3-dbus intltool

# run the included setup from within the unzipped folder
sudo python3 setup.py install

# Done! Can start with either `kazam` command or find Kazam in the menu 

sebbbi

Setup:
1. Index buffer containing N quads (each 2 triangles), where N is the max amount of spheres. Repeating pattern of {0,1,2,1,3,2} + K*4.
2. No vertex buffer.

Render N*2 triangles, where N is the number of spheres you have.

Vertex shader:
1. Sphere index = N/4 (N = SV_VertexId)
2. Quad coord: Q = float2(N%2, (N%4)/2) * 2.0 - 1.0
3. Transform sphere center -> pos

THeK3nger

// This is a basic asyncronous shader loader for THREE.js.
function ShaderLoader(vertex_url, fragment_url, onLoad, onProgress, onError) {
    var vertex_loader = new THREE.XHRLoader(THREE.DefaultLoadingManager);
    vertex_loader.setResponseType('text');
    vertex_loader.load(vertex_url, function (vertex_text) {
        var fragment_loader = new THREE.XHRLoader(THREE.DefaultLoadingManager);
        fragment_loader.setResponseType('text');
        fragment_loader.load(fragment_url, function (fragment_text) {
            onLoad(vertex_text, fragment_text);
        });

notlion

precision highp float;

// The PBR shader below is adapted from the Khronos glTF WebGL example:
// https://github.com/KhronosGroup/glTF-WebGL-PBR/blob/master/shaders/pbr-frag.glsl

struct PBRInfo {
    float NdotL; // cos angle between normal and light direction
    float NdotV; // cos angle between normal and view direction
    float NdotH; // cos angle between normal and half vector
    float LdotH; // cos angle between light direction and half vector

pixelmager

2020

• https://miketuritzin.com/post/hierarchical-depth-buffers/
• https://developer.nvidia.com/blog/optimizing-compute-shaders-for-l2-locality-using-thread-group-id-swizzling/
• https://asawicki.info/news_1735_a_better_way_to_scalarize_a_shader

2019

• https://developer.download.nvidia.com/video/GDC-19/NSIGHT_GPU_TRACE_Bavoil.pdf (video)

2018

• https://anteru.net/blog/2018/intro-to-compute-shaders/index.html

jackrusher

Twitter abuses all media file uploads, each type in its own way. If we want to upload a good looking animation loop from some low-color, high-detail generative art, we have to game their system's mechanisms.

• don't upload a video file, they will re-encode it into absolute 💩

• create a GIF, which they will auto-convert into a video file 😱

• The frames of the GIF will be resized to an even-sized width using an extremely naive algorithm. Your GIF should be an even size (1000, 2000,

pda

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