添加关照、全局等高线、修改图层问题

static/sdk/three/jsm/shaders/DigitalGlitch.js

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+/**
+ * RGB Shift Shader
+ * Shifts red and blue channels from center in opposite directions
+ * Ported from http://kriss.cx/tom/2009/05/rgb-shift/
+ * by Tom Butterworth / http://kriss.cx/tom/
+ *
+ * amount: shift distance (1 is width of input)
+ * angle: shift angle in radians
+ */
+
+const DigitalGlitch = {
+
+	uniforms: {
+
+		'tDiffuse': { value: null }, //diffuse texture
+		'tDisp': { value: null }, //displacement texture for digital glitch squares
+		'byp': { value: 0 }, //apply the glitch ?
+		'amount': { value: 0.08 },
+		'angle': { value: 0.02 },
+		'seed': { value: 0.02 },
+		'seed_x': { value: 0.02 }, //-1,1
+		'seed_y': { value: 0.02 }, //-1,1
+		'distortion_x': { value: 0.5 },
+		'distortion_y': { value: 0.6 },
+		'col_s': { value: 0.05 }
+	},
+
+	vertexShader: /* glsl */`
+
+		varying vec2 vUv;
+		void main() {
+			vUv = uv;
+			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+		}`,
+
+	fragmentShader: /* glsl */`
+
+		uniform int byp; //should we apply the glitch ?
+
+		uniform sampler2D tDiffuse;
+		uniform sampler2D tDisp;
+
+		uniform float amount;
+		uniform float angle;
+		uniform float seed;
+		uniform float seed_x;
+		uniform float seed_y;
+		uniform float distortion_x;
+		uniform float distortion_y;
+		uniform float col_s;
+
+		varying vec2 vUv;
+
+
+		float rand(vec2 co){
+			return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);
+		}
+
+		void main() {
+			if(byp<1) {
+				vec2 p = vUv;
+				float xs = floor(gl_FragCoord.x / 0.5);
+				float ys = floor(gl_FragCoord.y / 0.5);
+				//based on staffantans glitch shader for unity https://github.com/staffantan/unityglitch
+				float disp = texture2D(tDisp, p*seed*seed).r;
+				if(p.y<distortion_x+col_s && p.y>distortion_x-col_s*seed) {
+					if(seed_x>0.){
+						p.y = 1. - (p.y + distortion_y);
+					}
+					else {
+						p.y = distortion_y;
+					}
+				}
+				if(p.x<distortion_y+col_s && p.x>distortion_y-col_s*seed) {
+					if(seed_y>0.){
+						p.x=distortion_x;
+					}
+					else {
+						p.x = 1. - (p.x + distortion_x);
+					}
+				}
+				p.x+=disp*seed_x*(seed/5.);
+				p.y+=disp*seed_y*(seed/5.);
+				//base from RGB shift shader
+				vec2 offset = amount * vec2( cos(angle), sin(angle));
+				vec4 cr = texture2D(tDiffuse, p + offset);
+				vec4 cga = texture2D(tDiffuse, p);
+				vec4 cb = texture2D(tDiffuse, p - offset);
+				gl_FragColor = vec4(cr.r, cga.g, cb.b, cga.a);
+				//add noise
+				vec4 snow = 200.*amount*vec4(rand(vec2(xs * seed,ys * seed*50.))*0.2);
+				gl_FragColor = gl_FragColor+ snow;
+			}
+			else {
+				gl_FragColor=texture2D (tDiffuse, vUv);
+			}
+		}`
+
+};
+
+export { DigitalGlitch };