three-stdlib/shaders/BleachBypassShader.cjs.map

stand-alone library of threejs examples

{"version":3,"file":"BleachBypassShader.cjs","sources":["../../src/shaders/BleachBypassShader.ts"],"sourcesContent":["/**\n * Bleach bypass shader [http://en.wikipedia.org/wiki/Bleach_bypass]\n * - based on Nvidia example\n * http://developer.download.nvidia.com/shaderlibrary/webpages/shader_library.html#post_bleach_bypass\n */\n\nimport type { IUniform, Texture } from 'three'\nimport type { IShader } from './types'\n\nexport type BleachBypassShaderUniforms = {\n  opacity: IUniform<number>\n  tDiffuse: IUniform<Texture | null>\n}\n\nexport interface IBleachBypassShader extends IShader<BleachBypassShaderUniforms> {}\n\nexport const BleachBypassShader: IBleachBypassShader = {\n  uniforms: {\n    tDiffuse: { value: null },\n    opacity: { value: 1.0 },\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 opacity;',\n\n    'uniform sampler2D tDiffuse;',\n\n    'varying vec2 vUv;',\n\n    'void main() {',\n\n    '\tvec4 base = texture2D( tDiffuse, vUv );',\n\n    '\tvec3 lumCoeff = vec3( 0.25, 0.65, 0.1 );',\n    '\tfloat lum = dot( lumCoeff, base.rgb );',\n    '\tvec3 blend = vec3( lum );',\n\n    '\tfloat L = min( 1.0, max( 0.0, 10.0 * ( lum - 0.45 ) ) );',\n\n    '\tvec3 result1 = 2.0 * base.rgb * blend;',\n    '\tvec3 result2 = 1.0 - 2.0 * ( 1.0 - blend ) * ( 1.0 - base.rgb );',\n\n    '\tvec3 newColor = mix( result1, result2, L );',\n\n    '\tfloat A2 = opacity * base.a;',\n    '\tvec3 mixRGB = A2 * newColor.rgb;',\n    '\tmixRGB += ( ( 1.0 - A2 ) * base.rgb );',\n\n    '\tgl_FragColor = vec4( mixRGB, base.a );',\n\n    '}',\n  ].join('\\n'),\n}\n"],"names":[],"mappings":";;AAgBO,MAAM,qBAA0C;AAAA,EACrD,UAAU;AAAA,IACR,UAAU,EAAE,OAAO,KAAK;AAAA,IACxB,SAAS,EAAE,OAAO,EAAI;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,IAEA;AAAA,IAEA;AAAA,IAEA;AAAA,IAEA;AAAA,IAEA;AAAA,IACA;AAAA,IACA;AAAA,IAEA;AAAA,IAEA;AAAA,IACA;AAAA,IAEA;AAAA,IAEA;AAAA,IACA;AAAA,IACA;AAAA,IAEA;AAAA,IAEA;AAAA,EAAA,EACA,KAAK,IAAI;AACb;;"}