Initial project import

node_modules/three-stdlib/shaders/NormalMapShader.cjs

@@ -0,0 +1,47 @@
+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const THREE = require("three");
+const NormalMapShader = {
+  uniforms: {
+    heightMap: { value: null },
+    resolution: { value: /* @__PURE__ */ new THREE.Vector2(512, 512) },
+    scale: { value: /* @__PURE__ */ new THREE.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 );
+
+    }
+  `
+  )
+};
+exports.NormalMapShader = NormalMapShader;
+//# sourceMappingURL=NormalMapShader.cjs.map