third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-filter-in-worker.html - Issue 2326633002: Adds filter support for offscreen canvas

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Issue 2326633002: Adds filter support for offscreen canvas (Closed)

Patch Set: Code using ConversionData Created 4 years, 1 month ago

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	1 <!DOCTYPE html>

	2 <html>

	3 <body>

	4

	5 <canvas id='output0' width='100' height='100'></canvas>

	6 <canvas id='output1' width='100' height='100'></canvas>

	7 <canvas id='output2' width='100' height='100'></canvas>

	8 <canvas id='output3' width='100' height='100'></canvas>

	9 <canvas id='output4' width='100' height='100'></canvas>

	10 <canvas id='output5' width='100' height='100'></canvas>

	11 <canvas id='output6' width='100' height='100'></canvas>

	12 <canvas id='output7' width='100' height='100'></canvas>

	13 <canvas id='output8' width='100' height='100'></canvas>

	14 <canvas id='output9' width='100' height='100'></canvas>

	15 <canvas id='output10' width='100' height='100'></canvas>

	16 <canvas id='output11' width='100' height='100'></canvas>

	17

	18 <script id='myWorker' type='text/worker'>

	19 self.onmessage = function(e) {

	20

	21 var paint = function(filter) {

	22 var aCanvas = new OffscreenCanvas(100, 100);

	23 var ctx = aCanvas.getContext('2d');

	24 ctx.filter = filter;

	25 ctx.drawImage(e.data, 5, 5);

	26 ctx.drawImage(e.data, 35, 35);

	27 ctx.drawImage(e.data, 65, 65);

	28 return aCanvas;

	29 };

	30

	31 var canvas = [];

	32

	33 // canvas[0] = paint("blur(10px)");

	34

	35 canvas[0] = paint("none");

	36 canvas[1] = paint("blur(10px)");

	37 canvas[2] = paint("brightness(40%)");

	38 canvas[3] = paint("contrast(20%)");

	39 canvas[4] = paint("drop-shadow(0 0 5px #000)");

	40 canvas[5] = paint("grayscale(100%)");

	41 canvas[6] = paint("invert(100%)");

	42 canvas[7] = paint("opacity(50%)");

	43 canvas[8] = paint("saturate(20%)");

	44 canvas[9] = paint("sepia(100%)");

	45 canvas[10] = paint("sepia(1) hue-rotate(200deg)");

	46 canvas[11] = paint("url(#url)");

	47

	48 var ret = [];

	49 for (var i = 0; i < canvas.length; ++i) {

	50 var img = canvas[i].transferToImageBitmap();

	51 ret.push(img);

	52 }

	53

	54 self.postMessage(ret, ret);

	55 };

	56 </script>

	57

	58 <script>

	59 if (window.testRunner) {

	60 testRunner.waitUntilDone();

	61 }

	62

	63 var patternCanvas = document.createElement('canvas');

	64 patternCanvas.width = 30;

	65 patternCanvas.height = 30;

	66 var patternCtx = patternCanvas.getContext('2d');

	67 patternCtx.fillStyle = '#A00';

	68 patternCtx.fillRect(0, 0, 15, 15);

	69 patternCtx.fillStyle = '#0A0';

	70 patternCtx.fillRect(15, 0, 15, 15);

	71 patternCtx.fillStyle = '#00A';

	72 patternCtx.fillRect(0, 15, 15, 15);

	73 patternCtx.fillStyle = "#AA0";

	74 patternCtx.fillRect(15, 15, 15, 15);

	75 createImageBitmap(patternCanvas).then(consumeImageBitmap);

	76

	77 function consumeImageBitmap(patternImage) {

	78 var blob = new Blob([document.getElementById('myWorker').textContent]);

	79 var worker = new Worker(URL.createObjectURL(blob));

	80 worker.addEventListener('message', msg => {

	81 for (var i = 0; i < msg.data.length; ++i) {

	82 var outputCtx = document.getElementById('output' + i).getContext('bitmapre nderer');

	83 outputCtx.transferFromImageBitmap(msg.data[i]);

	84 }

	85 if (window.testRunner) {

	86 testRunner.notifyDone();

	87 }

	88 });

	89 worker.postMessage(patternImage, [patternImage]);

	90 }

	91 </script>

	92 </body>

	93 </html>

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