1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
// OffscreenCanvas test in a worker:2d.clearRect.negative
// Description:clearRect of negative sizes works
// Note:
importScripts("/resources/testharness.js");
importScripts("/html/canvas/resources/canvas-tests.js");
var t = async_test("clearRect of negative sizes works");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
throw reason;
});
t.step(function() {
var canvas = new OffscreenCanvas(100, 50);
var ctx = canvas.getContext('2d');
ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.clearRect(0, 0, 50, 25);
ctx.clearRect(100, 0, -50, 25);
ctx.clearRect(0, 50, 50, -25);
ctx.clearRect(100, 50, -50, -25);
_assertPixel(canvas, 25,12, 0,0,0,0);
_assertPixel(canvas, 75,12, 0,0,0,0);
_assertPixel(canvas, 25,37, 0,0,0,0);
_assertPixel(canvas, 75,37, 0,0,0,0);
t.done();
});
done();
|
