31:[] 2f:{"title":"gpu.js problems with alpha values when using GPU","cells":[{"id":0,"value":"md`# gpu.js problems with alpha values when using GPU`","pinned":false,"hidden":false,"mode":"ojs"},{"id":32,"value":"md`This notebook shows theis bug: https://github.com/gpujs/gpu.js/issues/260`","pinned":false,"hidden":false,"mode":"ojs"},{"id":17,"value":"{\n render([xValue, alphaValue]);\n return render.getCanvas();\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":51,"value":"viewof alphaValue = slider({min: 0, max: 1, value: 0.4, step: 0.02, \n title: \"Set transparency\", \n description: \"Move the slider to change the transparency and see if works\"})","pinned":false,"hidden":false,"mode":"ojs"},{"id":58,"value":"viewof processorType = {if(webglChecker) {return html``;} else {\nreturn html``;\n}\n\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":28,"value":"viewof xValue = slider({min: 0, max: 1, value: 0.4, step: 0.02, \n title: \"Set color weight\", \n description: \"Move the slider to change the drawn colors\"})","pinned":false,"hidden":false,"mode":"ojs"},{"id":11,"value":"render = gpu.createKernel(function(x) {\n this.color(this.thread.x/500, this.thread.y/500, x[0], x[1]);\n})\n .setOutput([500, 500])\n .setGraphical(true)","pinned":true,"hidden":false,"mode":"ojs"},{"id":3,"value":"gpu = new GPU({mode: processorType})","pinned":false,"hidden":false,"mode":"ojs"},{"id":2,"value":"GPU = require('https://wzrd.in/standalone/gpu.js')","pinned":false,"hidden":false,"mode":"ojs"},{"id":26,"value":"import {slider} from \"@jashkenas/inputs\"","pinned":false,"hidden":false,"mode":"ojs"},{"id":60,"value":"webglChecker = {let canvas = document.createElement('canvas');\n let ctx = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');\n return ctx!==null;\n}","pinned":false,"hidden":false,"mode":"ojs"}],"files":"$W31","stdlib":"1","titling":"auto"}