rc computer

computer.glsl

//https://thebookofshaders.com/edit.php

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

vec3 gray = vec3(22./255.,25./255.,25./255.);

float box(in vec2 _st, in vec2 _size){
    _size = vec2(0.5) - _size*0.5;
    vec2 uv = step(_size,_st);
    uv *= step(_size,vec2(1.0)-_st);
    return uv.x*uv.y;
}

float box2(in vec2 st, in vec2 bl, in vec2 sz) {
    vec2 uv = step(st,bl) - step(st, vec2(bl.x + sz.x, bl.y + sz.y));
    return uv.x*uv.y;
}

vec3 greenBlinky(in vec2 st, in vec2 pos, in vec2 size, in float timeMult) {
	return (box(st+pos, size) * vec3(0.225,0.495,0.290) * abs(sin(u_time*timeMult)));
}

void main() {
    vec2 st = gl_FragCoord.xy/u_resolution.xy;
    
    vec3 color = vec3(22./255.,25./255.,25./255.);
    vec2 bl = step(vec2(0.15,0.05),st);
    float pct = bl.x * bl.y;
    color += vec3(1.-pct);
    vec2 tr = step(vec2(0.15,0.05),1.0-st);
    pct *= tr.x * tr.y;
    color += (1.-pct);
    color += box(st+vec2(0.25,0.20), vec2(0.25,0.05));
    color += box(st+vec2(-0.25,0.20), vec2(0.25,0.05));
    color += box(st+vec2(0.4,0.25), vec2(0.2,0.06));
    color += box(st+vec2(-0.4,0.25), vec2(0.2,0.06));
    color += box(st+vec2(0.,-0.14), vec2(0.6,0.5));
    color -= box(st+vec2(0.,-0.14), vec2(0.5,0.4));
   	color += greenBlinky(st,vec2(0.215,-0.23),vec2(0.07,0.07),2.);
    color += greenBlinky(st,vec2(0.075,-0.23),vec2(0.07,0.07),1.5);
    color += greenBlinky(st,vec2(-0.065,-0.23),vec2(0.07,0.07),1.75);
    color += greenBlinky(st,vec2(0.110,-0.100),vec2(0.14,0.07),1.8);
    color += greenBlinky(st,vec2(-0.100,-0.100),vec2(0.14,0.07),1.9);
    
    float keysize = 0.06;
    float keyboardleft = 0.25;
    color += box2(st, vec2(keyboardleft,0.1), vec2(keysize, keysize)) * vec3(1,1,1);
    color += box2(st, vec2(keyboardleft+keysize,0.16), vec2(keysize, keysize)) * vec3(1,1,1);
    color += box2(st, vec2(keyboardleft+2.*keysize,0.1), vec2(keysize, keysize)) * vec3(1,1,1);
    color += box2(st, vec2(keyboardleft+3.*keysize,0.16), vec2(keysize, keysize)) * vec3(1,1,1);
    color += box2(st, vec2(keyboardleft+4.*keysize,0.1), vec2(keysize, keysize)) * vec3(1,1,1);
    color += box2(st, vec2(keyboardleft+5.*keysize,0.16), vec2(keysize, keysize)) * vec3(1,1,1);
    color += box2(st, vec2(keyboardleft+6.*keysize,0.1), vec2(keysize, keysize)) * vec3(1,1,1);
    color += box2(st, vec2(keyboardleft+7.*keysize,0.16), vec2(keysize, keysize)) * vec3(1,1,1);

    
    gl_FragColor = vec4(color,1.0);
}