2d.imageData.put.dirty.rect1.worker.js (1281B)
1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. 2 // OffscreenCanvas test in a worker:2d.imageData.put.dirty.rect1 3 // Description:putImageData() only modifies areas inside the dirty rectangle, using width and height 4 // Note: 5 6 importScripts("/resources/testharness.js"); 7 importScripts("/html/canvas/resources/canvas-tests.js"); 8 9 var t = async_test("putImageData() only modifies areas inside the dirty rectangle, using width and height"); 10 var t_pass = t.done.bind(t); 11 var t_fail = t.step_func(function(reason) { 12 throw reason; 13 }); 14 t.step(function() { 15 16 var canvas = new OffscreenCanvas(100, 50); 17 var ctx = canvas.getContext('2d'); 18 19 ctx.fillStyle = '#f00'; 20 ctx.fillRect(0, 0, 100, 50) 21 ctx.fillStyle = '#0f0'; 22 ctx.fillRect(0, 0, 20, 20) 23 24 var imgdata = ctx.getImageData(0, 0, 100, 50); 25 26 ctx.fillStyle = '#0f0'; 27 ctx.fillRect(0, 0, 100, 50) 28 ctx.fillStyle = '#f00'; 29 ctx.fillRect(40, 20, 20, 20) 30 ctx.putImageData(imgdata, 40, 20, 0, 0, 20, 20); 31 32 _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2); 33 _assertPixelApprox(canvas, 35,25, 0,255,0,255, 2); 34 _assertPixelApprox(canvas, 65,25, 0,255,0,255, 2); 35 _assertPixelApprox(canvas, 50,15, 0,255,0,255, 2); 36 _assertPixelApprox(canvas, 50,45, 0,255,0,255, 2); 37 t.done(); 38 }); 39 done();