| <!DOCTYPE html> |
| <canvas id='output0' width='100' height='100'></canvas> |
| <canvas id='output1' width='100' height='100'></canvas> |
| <canvas id='output2' width='100' height='100'></canvas> |
| <canvas id='output3' width='100' height='100'></canvas> |
| <canvas id='output4' width='100' height='100'></canvas> |
| <canvas id='output5' width='100' height='100'></canvas> |
| <canvas id='output6' width='100' height='100'></canvas> |
| <canvas id='output7' width='100' height='100'></canvas> |
| <canvas id='output8' width='100' height='100'></canvas> |
| <canvas id='output9' width='100' height='100'></canvas> |
| <canvas id='output10' width='100' height='100'></canvas> |
| <canvas id='output11' width='100' height='100'></canvas> |
| |
| <script id='myWorker' type='text/worker'> |
| self.onmessage = function(e) { |
| |
| var paint = function(filter) { |
| var aCanvas = new OffscreenCanvas(100, 100); |
| var ctx = aCanvas.getContext('2d'); |
| ctx.filter = filter; |
| ctx.drawImage(e.data, 5, 5); |
| ctx.drawImage(e.data, 35, 35); |
| ctx.drawImage(e.data, 65, 65); |
| return aCanvas; |
| }; |
| |
| var canvas = []; |
| |
| // canvas[0] = paint("blur(10px)"); |
| |
| canvas[0] = paint("none"); |
| canvas[1] = paint("blur(10px)"); |
| canvas[2] = paint("brightness(40%)"); |
| canvas[3] = paint("contrast(20%)"); |
| canvas[4] = paint("drop-shadow(0 0 5px green)"); |
| canvas[5] = paint("grayscale(100%)"); |
| canvas[6] = paint("invert(100%)"); |
| canvas[7] = paint("opacity(50%)"); |
| canvas[8] = paint("saturate(20%)"); |
| canvas[9] = paint("sepia(100%)"); |
| canvas[10] = paint("sepia(1) hue-rotate(200deg)"); |
| canvas[11] = paint("url(#url)"); |
| |
| var ret = []; |
| for (var i = 0; i < canvas.length; ++i) { |
| var img = canvas[i].transferToImageBitmap(); |
| ret.push(img); |
| } |
| |
| self.postMessage(ret, ret); |
| }; |
| </script> |
| |
| <script> |
| if (window.testRunner) { |
| testRunner.waitUntilDone(); |
| } |
| |
| var patternCanvas = document.createElement('canvas'); |
| patternCanvas.width = 30; |
| patternCanvas.height = 30; |
| var patternCtx = patternCanvas.getContext('2d'); |
| patternCtx.fillStyle = '#A00'; |
| patternCtx.fillRect(0, 0, 15, 15); |
| patternCtx.fillStyle = '#0A0'; |
| patternCtx.fillRect(15, 0, 15, 15); |
| patternCtx.fillStyle = '#00A'; |
| patternCtx.fillRect(0, 15, 15, 15); |
| patternCtx.fillStyle = "#AA0"; |
| patternCtx.fillRect(15, 15, 15, 15); |
| createImageBitmap(patternCanvas).then(consumeImageBitmap); |
| |
| function consumeImageBitmap(patternImage) { |
| var blob = new Blob([document.getElementById('myWorker').textContent]); |
| var worker = new Worker(URL.createObjectURL(blob)); |
| worker.addEventListener('message', msg => { |
| for (var i = 0; i < msg.data.length; ++i) { |
| var outputCtx = document.getElementById('output' + i).getContext('bitmaprenderer'); |
| outputCtx.transferFromImageBitmap(msg.data[i]); |
| } |
| if (window.testRunner) { |
| testRunner.notifyDone(); |
| } |
| }); |
| worker.postMessage(patternImage, [patternImage]); |
| } |
| </script> |
