three-stdlib/shaders/NormalMapShader.cjs.map

stand-alone library of threejs examples

{"version":3,"file":"NormalMapShader.cjs","sources":["../../src/shaders/NormalMapShader.ts"],"sourcesContent":["import { Vector2 } from 'three'\n\n/**\n * Normal map shader\n * - compute normals from heightmap\n */\n\nexport const NormalMapShader = {\n  uniforms: {\n    heightMap: { value: null },\n    resolution: { value: new Vector2(512, 512) },\n    scale: { value: new Vector2(1, 1) },\n    height: { value: 0.05 },\n  },\n\n  vertexShader: [\n    'varying vec2 vUv;',\n\n    'void main() {',\n\n    '\tvUv = uv;',\n    '\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',\n\n    '}',\n  ].join('\\n'),\n\n  fragmentShader: [\n    'uniform float height;',\n    'uniform vec2 resolution;',\n    'uniform sampler2D heightMap;',\n\n    'varying vec2 vUv;',\n\n    'void main() {',\n\n    '\tfloat val = texture2D( heightMap, vUv ).x;',\n\n    '\tfloat valU = texture2D( heightMap, vUv + vec2( 1.0 / resolution.x, 0.0 ) ).x;',\n    '\tfloat valV = texture2D( heightMap, vUv + vec2( 0.0, 1.0 / resolution.y ) ).x;',\n\n    '\tgl_FragColor = vec4( ( 0.5 * normalize( vec3( val - valU, val - valV, height  ) ) + 0.5 ), 1.0 );',\n\n    '}',\n  ].join('\\n'),\n}\n"],"names":["Vector2"],"mappings":";;;AAOO,MAAM,kBAAkB;AAAA,EAC7B,UAAU;AAAA,IACR,WAAW,EAAE,OAAO,KAAK;AAAA,IACzB,YAAY,EAAE,OAAO,IAAIA,MAAQ,QAAA,KAAK,GAAG,EAAE;AAAA,IAC3C,OAAO,EAAE,OAAO,IAAIA,MAAQ,QAAA,GAAG,CAAC,EAAE;AAAA,IAClC,QAAQ,EAAE,OAAO,KAAK;AAAA,EACxB;AAAA,EAEA,cAAc;AAAA,IACZ;AAAA,IAEA;AAAA,IAEA;AAAA,IACA;AAAA,IAEA;AAAA,EAAA,EACA,KAAK,IAAI;AAAA,EAEX,gBAAgB;AAAA,IACd;AAAA,IACA;AAAA,IACA;AAAA,IAEA;AAAA,IAEA;AAAA,IAEA;AAAA,IAEA;AAAA,IACA;AAAA,IAEA;AAAA,IAEA;AAAA,EAAA,EACA,KAAK,IAAI;AACb;;"}