最新代码

public/sdk/three/jsm/shaders/RGBShiftShader.js

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+/**
+ * RGB Shift Shader
+ * Shifts red and blue channels from center in opposite directions
+ * Ported from https://web.archive.org/web/20090820185047/http://kriss.cx/tom/2009/05/rgb-shift/
+ * by Tom Butterworth / https://web.archive.org/web/20090810054752/http://kriss.cx/tom/
+ *
+ * amount: shift distance (1 is width of input)
+ * angle: shift angle in radians
+ */
+
+const RGBShiftShader = {
+
+	name: 'RGBShiftShader',
+
+	uniforms: {
+
+		'tDiffuse': { value: null },
+		'amount': { value: 0.005 },
+		'angle': { value: 0.0 }
+
+	},
+
+	vertexShader: /* glsl */`
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vUv = uv;
+			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+
+		}`,
+
+	fragmentShader: /* glsl */`
+
+		uniform sampler2D tDiffuse;
+		uniform float amount;
+		uniform float angle;
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vec2 offset = amount * vec2( cos(angle), sin(angle));
+			vec4 cr = texture2D(tDiffuse, vUv + offset);
+			vec4 cga = texture2D(tDiffuse, vUv);
+			vec4 cb = texture2D(tDiffuse, vUv - offset);
+			gl_FragColor = vec4(cr.r, cga.g, cb.b, cga.a);
+
+		}`
+
+};
+
+export { RGBShiftShader };