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Improve setAll constant write by 20%

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themode 2022-01-06 02:04:54 +01:00 committed by TheMode
parent 83621e2ece
commit fddd9dd934
1 changed files with 11 additions and 10 deletions
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21
src/main/java/net/minestom/server/instance/palette/PaletteImpl.java
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@ -196,11 +196,15 @@ final class PaletteImpl implements Palette, Cloneable {
@Override
public void setAll(@NotNull EntrySupplier supplier) {
int[] cache = sizeCache(maxSize());
// Fill cache with values
// Constants
final int size = this.size;
final int dimensionMinus = dimension - 1;
final int dimensionBitCount = this.dimensionBitCount;
final int shiftedDimensionBitCount = dimensionBitCount << 1;
// Fill cache with values
int count = 0;
for (int i = 0; i < size; i++) {
final int y = i >> (dimensionBitCount << 1);
final int y = i >> shiftedDimensionBitCount;
final int z = (i >> (dimensionBitCount)) & dimensionMinus;
final int x = i & dimensionMinus;
final int value = supplier.get(x, y, z);
@ -221,15 +225,12 @@ final class PaletteImpl implements Palette, Cloneable {
final int magicMask = MAGIC_MASKS[bitsPerEntry];
for (int i = 0; i < values.length; i++) {
long block = values[i];
for (int j = 0; j < valuesPerLong; j++) {
final int index = i * valuesPerLong + j;
if (index >= size) break;
final int startIndex = i * valuesPerLong;
final int maxIndex = startIndex + valuesPerLong > size ? size - startIndex : valuesPerLong;
for (int j = 0; j < maxIndex; j++) {
final int bitIndex = j * bitsPerEntry;
{
final long indexClear = (long) magicMask << bitIndex;
block &= ~indexClear;
block |= (long) cache[index] << bitIndex;
}
block &= ~((long) magicMask << bitIndex);
block |= (long) cache[startIndex + j] << bitIndex;
}
values[i] = block;
}