webgl滤镜水彩过滤效果-html代码-BFW代码库

代码语言：html

所属分类：动画

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">

<style>
#container {
  width: 60vw;
  height: 33vw;
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  border: 7px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0px 0px 10px #00000038;
  cursor: pointer;
}

.help {
  font-family: sans-serif;
  position: absolute;
  bottom: 10px;
  text-align: center;
  width: 100%;
  color: rgba(0, 0, 0, 0.4);
}
</style>

</head>
<body translate="no">
<script id="fragmentShader" type="x-shader/x-fragment">
  
  varying vec2 vUv;
	uniform float dispFactor;
	uniform float dispFactor2;
	uniform float dispFactor3;
	uniform float dispFactor4;
	uniform float dispFactor5;
	uniform sampler2D map;
	uniform sampler2D map3;

	vec4 layer(vec4 foreground, vec4 background) {
		return foreground * foreground.a + background * (1.0 - foreground.a);
	}

	vec2 rotateUV(vec2 uv, float rotation) {
		float mid = 0.5;
		return vec2(
				cos(rotation) * (uv.x - mid) + sin(rotation) * (uv.y - mid) + mid,
				cos(rotation) * (uv.y - mid) - sin(rotation) * (uv.x - mid) + mid
		);
	}
	
  void main()
  {
		vec4 color = vec4(0.0, 0.0, 0.0, 0.0);
		vec4 OG = texture2D(map, vUv);
		OG.a = 0.0;

		vec2 scaleCenter = vec2(0.5, 0.5);

			for(float i = 0.0; i < 10.0; i++) {

			// float rnd = random( st );

			vec2 myUV = vUv;

			myUV = (myUV - scaleCenter) * ((i * 0.075)) + scaleCenter;
			myUV = rotateUV(myUV, (2.0) * (i + 1.0));

			vec4 image = texture2D(map3, myUV);
			image.a *= step(myUV.x, 1.)*
									step(0., myUV.x) *
									step(myUV.y, 1.) *
									step(0., myUV.y);

			image.rgb += 1.0;
			// image.rgb += 1.0 - (dispFactor2 / 10.0);
			if(i == 0.0 || i == 9.0) {
				image.rgb -= (dispFactor);
			}
			if(i == 1.0 || i == 8.0) {
				image.rgb -= (dispFactor2);
			}
			if(i == 2.0 || i == 7.0) {
				image.rgb -= (dispFactor3);
			}
			if(i == 3.0 || i == 6.0) {
				image.rgb -= (dispFactor4);
			}
			if(i == 4.0 || i == 5.0) {
				image.rgb -= (dispFactor5);
			}

			color = layer(image, color);
		}

			OG.a = 1.0 - color.r;

		gl_FragColor = OG;
  }
</script>
<script id="fragmentShader2" type="x-shader/x-fragment">
	varying vec2 vUv;
uniform float dispFactor;
uniform float dispFactor2;
uniform float dispFactor3;
uniform float dispFactor4;
uniform float dispFactor5;

uniform sampler2D map;
uniform sampler2D map3;

vec4 layer(vec4 foreground, vec4 background) {
  return foreground * foreground.a + background * (1.0 - foreground.a);
}

vec2 rotateUV(vec2 uv, float rotation) {
  float mid = 0.5;
  return vec2(
      cos(rotation) * (uv.x - mid) + sin(rotation) * (uv.y - mid) + mid,
      cos(rotation) * (uv.y - mid) - sin(rotation) * (uv.x - mid) + mid
  );
}

void main() {
	vec4 color = vec4(0.0, 0.0, 0.0, 0.0);
	vec4 OG = texture2D(map, vUv);
	// OG.a -= 1.0;

	vec2 scaleCenter = vec2(0.5, 0.5);

	for(float i = 0.0; i < 10.0; i++) {

		vec2 myUV = vUv;

		myUV = (myUV - scaleCenter) * ((i * 0.075)) + scaleCenter;
		myUV = rotateUV(myUV, (2.0) * (i + 1.0));

		vec4 image = texture2D(map3, myUV);
		image.a *= step(myUV.x, 1.)*
                step(0., myUV.x) *
                step(myUV.y, 1.) *
                step(0., myUV.y);

		image.rgb += 1.0;
		// image.rgb += 1.0 - (dispFactor2 / 10.0);
		if(i == 0.0 || i == 9.0) {
			image.rgb -= (dispFactor);
		}
		if(i == 1.0 || i == 8.0) {
			image.rgb -= (dispFactor2);
		}
		if(i == 2.0 || i == 7.0) {
			image.rgb -= (dispFactor3);
		}
		if(i == 3.0 || i == 6.0) {
			image.rgb -= (dispFactor4);
		}
		if(i == 4.0 || i == 5.0) {
			image.rgb -= (dispFactor5);
		}

		color = layer(image, color);
	}
  float alpha = mix(OG.a, 0.0, color.r);

	gl_FragColor = vec4(OG.rgb, alpha);
}
</script>
<script id="vertexShader" type="x-shader/x-vertex">
	varying vec2 vUv;
  void main() {
    vUv = uv;
    gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
  }

</script>
<div id="container">
</div>
<div class="help">click on the frame</div>

<script type="text/javascript" src="http://repo.bfw.wiki/bfwrepo/js/three.js"></script>
<script type="text/javascript" src="http://repo.bfw.wiki/bfwrepo/js/gsap.min.js"></script>
<script>
var lastUpdate;
var container;
var camera, scene, renderer;
var uniforms;

function init() {
  // basic setup
  var width = window.innerWidth * 0.6;
  var height = window.innerWidth * 0.33;

  container = document.getElementById(&q.........完整代码请登录后点击上方下载按钮下载查看