修改静态资源文件夹位置

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

@@ -0,0 +1,55 @@
+import {
+	Vector2
+} from 'three';
+
+/**
+ * Normal map shader
+ * - compute normals from heightmap
+ */
+
+const NormalMapShader = {
+
+	name: 'NormalMapShader',
+
+	uniforms: {
+
+		'heightMap': { value: null },
+		'resolution': { value: new Vector2( 512, 512 ) },
+		'scale': { value: new Vector2( 1, 1 ) },
+		'height': { value: 0.05 }
+
+	},
+
+	vertexShader: /* glsl */`
+
+		varying vec2 vUv;
+
+		void main() {
+
+			vUv = uv;
+			gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+
+		}`,
+
+	fragmentShader: /* glsl */`
+
+		uniform float height;
+		uniform vec2 resolution;
+		uniform sampler2D heightMap;
+
+		varying vec2 vUv;
+
+		void main() {
+
+			float val = texture2D( heightMap, vUv ).x;
+
+			float valU = texture2D( heightMap, vUv + vec2( 1.0 / resolution.x, 0.0 ) ).x;
+			float valV = texture2D( heightMap, vUv + vec2( 0.0, 1.0 / resolution.y ) ).x;
+
+			gl_FragColor = vec4( ( 0.5 * normalize( vec3( val - valU, val - valV, height  ) ) + 0.5 ), 1.0 );
+
+		}`
+
+};
+
+export { NormalMapShader };