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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
/**
* Tests the `getPixel` actor method works across threads.
*/
function* ifWebGLSupported() {
let { target, front } = yield initBackend(MULTIPLE_CONTEXTS_URL);
front.setup({ reload: true });
yield getPrograms(front, 2);
// Wait a frame to ensure rendering
yield front.waitForFrame();
let pixel = yield front.getPixel({ selector: "#canvas1", position: { x: 0, y: 0 }});
is(pixel.r, 255, "correct `r` value for first canvas.");
is(pixel.g, 255, "correct `g` value for first canvas.");
is(pixel.b, 0, "correct `b` value for first canvas.");
is(pixel.a, 255, "correct `a` value for first canvas.");
pixel = yield front.getPixel({ selector: "#canvas2", position: { x: 0, y: 0 }});
is(pixel.r, 0, "correct `r` value for second canvas.");
is(pixel.g, 255, "correct `g` value for second canvas.");
is(pixel.b, 255, "correct `b` value for second canvas.");
is(pixel.a, 255, "correct `a` value for second canvas.");
yield removeTab(target.tab);
finish();
}
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