ppfun/pixelplanet
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benchmark Uint32Array to node Buffer.writeUInt32BE

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This commit is contained in:
HF 2022-06-20 15:53:52 +02:00
parent 6974435a46
commit 0fba279f64
1 changed files with 8 additions and 21 deletions
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29
src/core/tilesBackup.js
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@ -161,11 +161,11 @@ export async function incrementialBackupRedis(
const { abgr } = palette;
const compLength = Math.min(oldChunk.length, curChunk.length);
tileBuffer = Buffer.allocUnsafe(TILE_SIZE ** 2 * 4);
tileBuffer = new Uint32Array(TILE_SIZE ** 2);
for (let i = 0; i < compLength; i += 1) {
const curPxl = curChunk[i];
if (oldChunk[i] !== curPxl) {
tileBuffer.writeUInt32BE(abgr[curPxl & 0x3F], i * 4);
tileBuffer[i] = abgr[curPxl & 0x3F];
}
}
@ -173,22 +173,17 @@ export async function incrementialBackupRedis(
const curChunkLength = curChunk.length;
for (let i = oldChunkLength; i < curChunkLength; i += 1) {
tileBuffer.writeUInt32BE(abgr[curChunk[i] & 0x3F], i * 4);
tileBuffer[i] = abgr[curChunk[i] & 0x3F];
}
if (oldChunkLength > curChunkLength) {
const blank = abgr[0];
for (let i = curChunkLength; i < oldChunkLength; i += 1) {
if (oldChunk[i] !== 0) {
tileBuffer.writeUInt32BE(blank, i * 4);
tileBuffer[i] = blank;
}
}
}
const curLength = Math.max(oldChunkLength, curChunkLength) * 4;
if (curLength < tileBuffer.length) {
tileBuffer.fill(0, curLength);
}
} catch (error) {
console.error(
// eslint-disable-next-line max-len
@ -205,7 +200,7 @@ export async function incrementialBackupRedis(
const filename = `${xBackupDir}/${y}.png`;
// eslint-disable-next-line no-await-in-loop
await sharp(
tileBuffer, {
Buffer.from(tileBuffer.buffer), {
raw: {
width: TILE_SIZE,
height: TILE_SIZE,
@ -284,26 +279,18 @@ export async function createPngBackup(
}
if (chunk && chunk.length) {
try {
const tileBuffer = Buffer.allocUnsafe(TILE_SIZE ** 2 * 4);
const tileBuffer = new Uint32Array(TILE_SIZE ** 2);
const chunkLength = chunk.length;
const { abgr } = palette;
for (let i = 0; i < chunkLength; i += 1) {
tileBuffer.writeUInt32BE(
abgr[chunk[i] & 0x3F],
i * 4,
);
}
const curLength = chunkLength * 4;
if (curLength < tileBuffer.length) {
tileBuffer.fill(0, curLength);
tileBuffer[i] = abgr[chunk[i] & 0x3F];
}
const filename = `${xBackupDir}/${y}.png`;
// eslint-disable-next-line no-await-in-loop
await sharp(
tileBuffer, {
Buffer.from(tileBuffer.buffer), {
raw: {
width: TILE_SIZE,
height: TILE_SIZE,