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three

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JavaScript 3D library

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console.warn( "THREE.BrightnessContrastShader: As part of the transition to ES6 Modules, the files in 'examples/js' were deprecated in May 2020 (r117) and will be deleted in December 2020 (r124). You can find more information about developing using ES6 Modules in https://threejs.org/docs/#manual/en/introduction/Installation." ); /** * Brightness and contrast adjustment * https://github.com/evanw/glfx.js * brightness: -1 to 1 (-1 is solid black, 0 is no change, and 1 is solid white) * contrast: -1 to 1 (-1 is solid gray, 0 is no change, and 1 is maximum contrast) */ THREE.BrightnessContrastShader = { uniforms: { "tDiffuse": { value: null }, "brightness": { value: 0 }, "contrast": { value: 0 } }, vertexShader: [ "varying vec2 vUv;", "void main() {", " vUv = uv;", " gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );", "}" ].join( "\n" ), fragmentShader: [ "uniform sampler2D tDiffuse;", "uniform float brightness;", "uniform float contrast;", "varying vec2 vUv;", "void main() {", " gl_FragColor = texture2D( tDiffuse, vUv );", " gl_FragColor.rgb += brightness;", " if (contrast > 0.0) {", " gl_FragColor.rgb = (gl_FragColor.rgb - 0.5) / (1.0 - contrast) + 0.5;", " } else {", " gl_FragColor.rgb = (gl_FragColor.rgb - 0.5) * (1.0 + contrast) + 0.5;", " }", "}" ].join( "\n" ) };