fabric/dist/src/filters/shaders/vibrance.d.ts

Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.

export declare const fragmentSource = "\n  precision highp float;\n  uniform sampler2D uTexture;\n  uniform float uVibrance;\n  varying vec2 vTexCoord;\n  void main() {\n    vec4 color = texture2D(uTexture, vTexCoord);\n    float max = max(color.r, max(color.g, color.b));\n    float avg = (color.r + color.g + color.b) / 3.0;\n    float amt = (abs(max - avg) * 2.0) * uVibrance;\n    color.r += max != color.r ? (max - color.r) * amt : 0.00;\n    color.g += max != color.g ? (max - color.g) * amt : 0.00;\n    color.b += max != color.b ? (max - color.b) * amt : 0.00;\n    gl_FragColor = color;\n  }\n";
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