SPAM Arts: Introducción al videoarte

varying vec2 uv;
uniform float time;
uniform float targetAspect;
uniform vec2 resolution;
uniform vec2 videoResolution;
uniform vec2 scaledVideoResolution;
uniform sampler2D camTex;
uniform sampler2D previousTex;
uniform float param1;
uniform float param2;
uniform float param3;
uniform float param4;
uniform sampler2D buffer0;
uniform sampler2D buffer1;
uniform sampler2D buffer2;
uniform sampler2D camTex0;
uniform sampler2D camTex1;
uniform sampler2D camTex2;

vec2 pixel = 1.0 / resolution;
#define PI 3.1415926538
#define TAU 6.283185307

vec3 getCam(vec2 pos, sampler2D tex){…}
vec3 getCam(vec2 pos){…}
vec3 getCam0(vec2 pos){…}
vec3 getCam1(vec2 pos){…}
vec3 getCam2(vec2 pos){…}
vec3 getPrevious(vec2 pos){…}

// Access Facial Feature Masks
float getFace(vec2 pos){…}
float getEye(vec2 pos){…}
float getMouth(vec2 pos){…}

vec2 rotate(vec2 v, float a){…}

float map(float value, float min1, float max1, float min2, float max2){…}

// Color Shorthands
vec3 black = vec3(0.0);
vec3 white = vec3(1.0);
vec3 red = vec3(0.86, 0.22, 0.27);
vec3 orange = vec3(0.92, 0.49, 0.07);
vec3 yellow = vec3(0.91, 0.89, 0.26);
vec3 green = vec3(0.0, 0.71, 0.31);
vec3 blue = vec3(0.05, 0.35, 0.65);
vec3 purple = vec3(0.38, 0.09, 0.64);
vec3 pink = vec3(.9, 0.758, 0.798);
vec3 lime = vec3(0.361, 0.969, 0.282);
vec3 teal = vec3(0.396, 0.878, 0.878);
vec3 magenta = vec3(1.0, 0.189, 0.745);
vec3 brown = vec3(0.96, 0.474, 0.227);

float rand(float n){…}
// Fractal Brownian Noise
float fbn(float x, const in int iterations){…}
float fbn(vec2 x, const in int iterations){…}
float fbn(vec3 x, const in int iterations){…}

// Color Space Conversion
vec3 hsl2rgb(vec3 hsl){…}
vec3 hsl2rgb(float h, float s, float l){…}
vec3 rgb2hsl(vec3 rgb){…}
vec3 rgb2hsl(float r, float g, float b){…}
vec3 saturate(vec3 cin, float amount ){…}
vec3 RGBsplit( float delta){…}
float bpm(float bpm, float q, float intensity){…}