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: Sync Created 3 years, 10 months ago

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	1 <!DOCTYPE html>

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

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

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

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

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

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

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

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

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

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

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

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

	14

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

	16 self.onmessage = function(e) {

	17

	18 var paint = function(filter) {

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

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

	21 ctx.filter = filter;

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

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

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

	25 return aCanvas;

	26 };

	27

	28 var canvas = [];

	29

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

	31

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

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

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

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

	36 canvas[4] = paint("drop-shadow(0 0 5px green)");

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

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

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

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

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

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

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

	44

	45 var ret = [];

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

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

	48 ret.push(img);

	49 }

	50

	51 self.postMessage(ret, ret);

	52 };

	53 </script>

	54

	55 <script>

	56 if (window.testRunner) {

	57 testRunner.waitUntilDone();

	58 }

	59

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

	61 patternCanvas.width = 30;

	62 patternCanvas.height = 30;

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

	64 patternCtx.fillStyle = '#A00';

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

	66 patternCtx.fillStyle = '#0A0';

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

	68 patternCtx.fillStyle = '#00A';

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

	70 patternCtx.fillStyle = "#AA0";

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

	72 createImageBitmap(patternCanvas).then(consumeImageBitmap);

	73

	74 function consumeImageBitmap(patternImage) {

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

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

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

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

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

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

	81 }

	82 if (window.testRunner) {

	83 testRunner.notifyDone();

	84 }

	85 });

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

	87 }

	88 </script>

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