2_1_binary

Code 2.2, Figure 2.3:

2_1_binary.frag

#version 300 es precision highp float; precision highp int; out vec4 fragColor; uniform float u_time; uniform vec2 u_resolution; void main(){ vec2 pos = gl_FragCoord.xy / u_resolution.xy; pos *= vec2(32.0, 9.0); uint[9] a = uint[]( uint(u_time), 0xbu, 9u, 0xbu ^ 9u, 0xffffffffu, 0xffffffffu + uint(u_time), floatBitsToUint(floor(u_time)), floatBitsToUint(-floor(u_time)), floatBitsToUint(11.5625) ); if (fract(pos.x) < 0.1){ if (floor(pos.x) == 1.0){ fragColor = vec4(1, 0, 0, 1); } else if (floor(pos.x) == 9.0){ fragColor = vec4(0, 1, 0, 1); } else { fragColor = vec4(0.5); } } else if (fract(pos.y) < 0.1){ fragColor = vec4(0.5); } else { uint b = a[int(pos.y)]; b = (b << uint(pos.x)) >> 31; fragColor = vec4(vec3(b), 1.0); } }

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

void main(){
  vec2 pos = gl_FragCoord.xy / u_resolution.xy;
  pos *= vec2(32.0, 9.0);
  uint[9] a = uint[](
    uint(u_time),
    0xbu,
    9u,
    0xbu ^ 9u,
    0xffffffffu,
    0xffffffffu + uint(u_time),
    floatBitsToUint(floor(u_time)),
    floatBitsToUint(-floor(u_time)),
    floatBitsToUint(11.5625)
  );
  
  if (fract(pos.x) < 0.1){
    if (floor(pos.x) == 1.0){
      fragColor = vec4(1, 0, 0, 1);
    } else if (floor(pos.x) == 9.0){
      fragColor = vec4(0, 1, 0, 1);
    } else {
      fragColor = vec4(0.5);
    }
  } else if (fract(pos.y) < 0.1){
    fragColor = vec4(0.5);
  } else {
    uint b = a[int(pos.y)]; 
    b = (b << uint(pos.x)) >> 31;
    fragColor = vec4(vec3(b), 1.0); 
  }
  
}