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Improve performance and accuracy of multi-image composite #2286

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Lovell Fuller
2022-02-16 18:56:35 +00:00
parent 7f83ecd255
commit c62002554b
10 changed files with 27 additions and 29 deletions
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8
test/unit/extend.js
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@@ -140,7 +140,7 @@ describe('Extend', function () {
});
it('Premultiply background when compositing', async () => {
const background = '#bf1942cc';
const background = { r: 191, g: 25, b: 66, alpha: 0.8 };
const data = await sharp({
create: {
width: 1, height: 1, channels: 4, background: '#fff0'
@@ -158,10 +158,6 @@ describe('Extend', function () {
})
.raw()
.toBuffer();
const [r1, g1, b1, a1, r2, g2, b2, a2] = data;
assert.strictEqual(true, Math.abs(r2 - r1) < 2);
assert.strictEqual(true, Math.abs(g2 - g1) < 2);
assert.strictEqual(true, Math.abs(b2 - b1) < 2);
assert.strictEqual(true, Math.abs(a2 - a1) < 2);
assert.deepStrictEqual(Array.from(data), [191, 25, 65, 204, 238, 31, 82, 204]);
});
});