Shadertoy in three.js

Developer
Khangeldy
Size
4,402 Kb
Views
8,096
  1. Shadertoy in three.js Previews
  2. Shadertoy in three.js HTML Codes
  3. Shadertoy in three.js CSS Codes
  4. Shadertoy in three.js JS Codes

How do I make an shadertoy in three.js?

What is a shadertoy in three.js? How do you make a shadertoy in three.js? This script and codes were developed by Khangeldy on 09 November 2022, Wednesday.

Shadertoy in three.js Previews
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Shadertoy in three.js - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>shadertoy in three.js</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <!-- THIS is OPENGL Shading language scripts -->
<script id="vertex-shader" type="no-js">	void main()	{	gl_Position = vec4( position, 1.0 );	}
</script>
<!-- orinal from https://www.shadertoy.com/view/Ms2SD1 -->
<script id="fragment-shader" type="no-js">
#ifdef GL_ES
precision mediump float;
#endif
uniform float time;
uniform vec2 mouse;
uniform vec2 resolution;
varying vec2 surfacePosition;
const int NUM_STEPS = 8;
const float PI = 3.1415;
const float EPSILON = 1e-3;
float EPSILON_NRM = 0.1 / resolution.x;
// sea
const int ITER_GEOMETRY = 3;
const int ITER_FRAGMENT = 5;
const float SEA_HEIGHT = 0.6;
const float SEA_CHOPPY = 2.0;
const float SEA_SPEED = 0.8;
const float SEA_FREQ = 0.16;
const vec3 SEA_BASE = vec3(0.1,0.19,0.22);
const vec3 SEA_WATER_COLOR = vec3(0.8,0.9,0.6);
const float SKY_INTENSITY = 1.0;
#define SEA_TIME time * SEA_SPEED
// math
mat4 fromEuler(vec3 ang) { vec2 a1 = vec2(sin(ang.x),cos(ang.x)); vec2 a2 = vec2(sin(ang.y),cos(ang.y)); vec2 a3 = vec2(sin(ang.z),cos(ang.z)); mat4 m; m[0] = vec4(a1.y*a3.y+a1.x*a2.x*a3.x,a1.y*a2.x*a3.x+a3.y*a1.x,-a2.y*a3.x,0.0);	m[1] = vec4(-a2.y*a1.x,a1.y*a2.y,a2.x,0.0);	m[2] = vec4(a3.y*a1.x*a2.x+a1.y*a3.x,a1.x*a3.x-a1.y*a3.y*a2.x,a2.y*a3.y,0.0);	m[3] = vec4(0.0,0.0,0.0,1.0);	return m;
}
vec3 rotate(vec3 v, mat4 m) { return vec3(dot(v,m[0].xyz),dot(v,m[1].xyz),dot(v,m[2].xyz));
}
float hash( vec2 p ) { float h = dot(p,vec2(127.1,311.7)); return fract(sin(h)*43758.5453123);
}
float noise( in vec2 p ) { vec2 i = floor( p ); vec2 f = fract( p ); vec2 u = f*f*(3.0-2.0*f); return -1.0+2.0*mix( mix( hash( i + vec2(0.0,0.0) ), hash( i + vec2(1.0,0.0) ), u.x), mix( hash( i + vec2(0.0,1.0) ), hash( i + vec2(1.0,1.0) ), u.x), u.y);
}
// lighting
float diffuse(vec3 n,vec3 l,float p) { return pow(dot(n,l) * 0.4 + 0.6,p); }
float specular(vec3 n,vec3 l,vec3 e,float s) { float nrm = (s + 8.0) / (3.1415 * 8.0); return pow(max(dot(reflect(e,n),l),0.0),s) * nrm;
}
// sky
vec3 sky_color(vec3 e) { e.y = max(e.y,0.0); vec3 ret; ret.x = pow(1.0-e.y,2.0); ret.y = 1.0-e.y; ret.z = 0.6+(1.0-e.y)*0.4; return ret * SKY_INTENSITY;
}
// sea
float sea_octave(vec2 uv, float choppy) { uv += noise(uv); vec2 wv = 1.0-abs(sin(uv)); vec2 swv = abs(cos(uv)); wv = mix(wv,swv,wv); return pow(1.0-pow(wv.x * wv.y,0.65),choppy);
}
float map(vec3 p) { float freq = SEA_FREQ; float amp = SEA_HEIGHT; float choppy = SEA_CHOPPY; vec2 uv = p.xz; uv.x *= 0.75; mat2 m = mat2(1.6,1.2,-1.2,1.6); float d, h = 0.0; for(int i = 0; i < ITER_GEOMETRY; i++) {	d = sea_octave((uv+SEA_TIME)*freq,choppy);	d += sea_octave((uv-SEA_TIME)*freq,choppy); h += d * amp;	uv *= m; freq *= 1.9; amp *= 0.22; choppy = mix(choppy,1.0,0.2); } return p.y - h;
}
float map_detailed(vec3 p) { float freq = SEA_FREQ; float amp = SEA_HEIGHT; float choppy = SEA_CHOPPY; vec2 uv = p.xz; uv.x *= 0.75; mat2 m = mat2(1.6,1.2,-1.2,1.6); float d, h = 0.0; for(int i = 0; i < ITER_FRAGMENT; i++) {	d = sea_octave((uv+SEA_TIME)*freq,choppy);	d += sea_octave((uv-SEA_TIME)*freq,choppy); h += d * amp;	uv *= m; freq *= 1.9; amp *= 0.22; choppy = mix(choppy,1.0,0.2); } return p.y - h;
}
vec3 sea_color(in vec3 p, in vec3 n, in vec3 eye, in vec3 dist) { float fresnel_o = 1.0 - max(dot(n,-eye),0.0); float fresnel = pow(fresnel_o,3.0) * 0.65; // reflection vec3 refl = sky_color(reflect(eye,n)); // color vec3 ret = SEA_BASE; ret = mix(ret,refl,fresnel); // wave peaks float atten = max(1.0 - dot(dist,dist) * 0.001, 0.0); ret += SEA_WATER_COLOR * (p.y - SEA_HEIGHT) * 0.18 * atten; return ret;
}
// tracing
vec3 getNormal(vec3 p, float eps) { vec3 n; n.y = map_detailed(p); n.x = map_detailed(vec3(p.x+eps,p.y,p.z)) - n.y; n.z = map_detailed(vec3(p.x,p.y,p.z+eps)) - n.y; n.y = eps; return normalize(n);
}
float hftracing(vec3 ori, vec3 dir, out vec3 p) { float tm = 0.0; float tx = 1000.0; float hx = map(ori + dir * tx); if(hx > 0.0) return tx; float hm = map(ori + dir * tm); float tmid = 0.0; for(int i = 0; i < NUM_STEPS; i++) { tmid = mix(tm,tx, hm/(hm-hx)); p = ori + dir * tmid;	float hmid = map(p);	if(hmid < 0.0) { tx = tmid; hx = hmid; } else { tm = tmid; hm = hmid; } } return tmid;
}
// main
void main(void)
{ vec2 uv = gl_FragCoord.xy / resolution.xy; uv = 1.0 - uv * 2.0; uv.x *= resolution.x / resolution.y; //uv = (surfacePosition+vec2(0., .5))*17. + 5E-3*(pow(length(surfacePosition+vec2(0. ,0.5)), -2.)); uv.y *= -1.; //uv.y += -2.; // ray vec3 ang = vec3(0.0,0.003, pow(time, 0.6)); ang = vec3(0.0,clamp(2.0-mouse.y*0.01,-0.3,PI),mouse.x*0.01); vec3 ori = vec3(0.0,3.5,time*.05); vec3 dir = normalize(vec3(uv.xy,-2.0)); dir.z -= length(uv) * 0.15; //dir = rotate(normalize(dir),ang); // tracing vec3 p; float dens = hftracing(ori,dir,p); vec3 dist = p - ori; vec3 n = getNormal(p, dot(dist,dist)*EPSILON_NRM); // color vec3 color = sea_color(p,n,dir,dist); vec3 light = normalize(vec3(0.0,1.0,0.8)); color += vec3(diffuse(n,light,80.0) * SEA_WATER_COLOR) * 0.12; color += vec3(specular(n,light,dir,60.0)); // post color = mix(sky_color(dir),color,pow(smoothstep(0.0,-0.05,dir.y),0.3)); color = pow(color,vec3(0.75)); gl_FragColor = vec4(color,1.0);
}
</script> <script src='http://cdnjs.cloudflare.com/ajax/libs/three.js/r70/three.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Shadertoy in three.js - Script Codes CSS Codes

body {	overflow: hidden;	margin: 0;	height: 100%;
}

Shadertoy in three.js - Script Codes JS Codes

// init camera, scene, renderer
var scene, camera, renderer;
scene = new THREE.Scene();
var fov = 75,	aspect = window.innerWidth / window.innerHeight;
camera = new THREE.PerspectiveCamera(fov, aspect, 0.1, 1000);
camera.position.z = 100;
camera.lookAt(scene.position);
renderer = new THREE.WebGLRenderer();
renderer.setClearColor(0xc4c4c4);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
var clock = new THREE.Clock();
var tuniform = {	time: {	type: 'f',	value: 0.1	},	resolution: {	type: 'v2',	value: new THREE.Vector2()	},	mouse: {	type: 'v4',	value: new THREE.Vector2()	}
};
// Mouse position in - 1 to 1
renderer.domElement.addEventListener('mousedown', function(e) {	var canvas = renderer.domElement;	var rect = canvas.getBoundingClientRect();	tuniform.mouse.value.x = (e.clientX - rect.left) / window.innerWidth * 2 - 1;	tuniform.mouse.value.y = (e.clientY - rect.top) / window.innerHeight * -2 + 1;
});
renderer.domElement.addEventListener('mouseup', function(e) {	var canvas = renderer.domElement;	var rect = canvas.getBoundingClientRect();	tuniform.mouse.value.z = (e.clientX - rect.left) / window.innerWidth * 2 - 1;	tuniform.mouse.value.w = (e.clientY - rect.top) / window.innerHeight * -2 + 1;
});
// resize canvas function
window.addEventListener('resize',function() {	camera.aspect = window.innerWidth / window.innerHeight;	camera.updateProjectionMatrix();	renderer.setSize(window.innerWidth, window.innerHeight);
});
tuniform.resolution.value.x = window.innerWidth;
tuniform.resolution.value.y = window.innerHeight;
// Create Plane
var material = new THREE.ShaderMaterial({	uniforms: tuniform,	vertexShader: document.getElementById('vertex-shader').textContent,	fragmentShader: document.getElementById('fragment-shader').textContent
});
var mesh = new THREE.Mesh(	new THREE.PlaneBufferGeometry(window.innerWidth, window.innerHeight, 40), material
);
scene.add(mesh);
// draw animation
function render(time) {	tuniform.time.value += clock.getDelta();	requestAnimationFrame(render);	renderer.render(scene, camera);
}
render();
Shadertoy in three.js - Script Codes
Shadertoy in three.js - Script Codes
Home Page Home
Developer Khangeldy
Username Khangeldy
Uploaded November 09, 2022
Rating 3
Size 4,402 Kb
Views 8,096
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