fabric
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Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.
2 lines • 1.13 kB
JavaScript
import{_defineProperty as e}from"../../_virtual/_@oxc-project_runtime@0.122.0/helpers/defineProperty.min.mjs";import{classRegistry as t}from"../ClassRegistry.min.mjs";import{BaseFilter as n}from"./BaseFilter.min.mjs";import{fragmentSource as r}from"./shaders/gamma.min.mjs";const i=`Gamma`;var a=class extends n{getFragmentSource(){return r}constructor(e={}){super(e),this.gamma=e.gamma||this.constructor.defaults.gamma.concat()}applyTo2d({imageData:{data:e}}){let t=this.gamma,n=1/t[0],r=1/t[1],i=1/t[2];this.rgbValues||(this.rgbValues={r:new Uint8Array(256),g:new Uint8Array(256),b:new Uint8Array(256)});let a=this.rgbValues;for(let e=0;e<256;e++)a.r[e]=255*(e/255)**n,a.g[e]=255*(e/255)**r,a.b[e]=255*(e/255)**i;for(let t=0;t<e.length;t+=4)e[t]=a.r[e[t]],e[t+1]=a.g[e[t+1]],e[t+2]=a.b[e[t+2]]}sendUniformData(e,t){e.uniform3fv(t.uGamma,this.gamma)}isNeutralState(){let{gamma:e}=this;return e[0]===1&&e[1]===1&&e[2]===1}toObject(){return{type:i,gamma:this.gamma.concat()}}};e(a,`type`,i),e(a,`defaults`,{gamma:[1,1,1]}),e(a,`uniformLocations`,[`uGamma`]),t.setClass(a);export{a as Gamma};
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