2_0_legacy

コード 2.1, 図 2.2:

2_0_legacy.frag

#version 300 es precision highp float; out vec4 fragColor; uniform float u_time; uniform vec2 u_resolution; int channel; float fractSin11(float x){ // 1 in, 1 out return fract(1000.0 * sin(x)); } float fractSin21(vec2 xy){ // 2 in, 1 out return fract(sin(dot(xy, vec2(12.9898, 78.233))) * 43758.5453123); } void main(){ vec2 pos = gl_FragCoord.xy; pos += floor(60.0 * u_time); channel = int(2.0 * gl_FragCoord.x / u_resolution.x); if (channel == 0){ //left fragColor = vec4(fractSin11(pos.x)); } else { //right fragColor = vec4(fractSin21(pos.xy / u_resolution.xy)); } fragColor.a = 1.0; }

#version 300 es
precision highp float;
out vec4 fragColor;
uniform float u_time;
uniform vec2 u_resolution;
int channel;

float fractSin11(float x){ // 1 in, 1 out
  return fract(1000.0 * sin(x));
}

float fractSin21(vec2 xy){ // 2 in, 1 out
  return fract(sin(dot(xy, vec2(12.9898, 78.233))) * 43758.5453123);
}

void main(){
  vec2 pos = gl_FragCoord.xy;
  pos += floor(60.0 * u_time);
  channel = int(2.0 * gl_FragCoord.x / u_resolution.x);
  if (channel == 0){ //left
    fragColor = vec4(fractSin11(pos.x));
  } else { //right
    fragColor = vec4(fractSin21(pos.xy / u_resolution.xy));
  }
  fragColor.a = 1.0; 
}