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Improve setAll with constant return

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themode 2022-01-08 06:24:24 +01:00 committed by TheMode
parent 8de5ba1149
commit 592adccf81
2 changed files with 52 additions and 24 deletions
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67
src/main/java/net/minestom/server/instance/palette/PaletteImpl.java
View File

@ -229,39 +229,34 @@ final class PaletteImpl implements Palette, Cloneable {
final int dimensionBitCount = this.dimensionBitCount;
final int shiftedDimensionBitCount = dimensionBitCount << 1;
// Fill cache with values
int fillValue = -1;
int count = 0;
for (int i = 0; i < size; i++) {
final int y = i >> shiftedDimensionBitCount;
final int z = (i >> (dimensionBitCount)) & dimensionMinus;
final int x = i & dimensionMinus;
final int value = supplier.get(x, y, z);
int value = supplier.get(x, y, z);
if (fillValue != -2) {
if (fillValue == -1) {
fillValue = value;
} else if (fillValue != value) {
fillValue = -2;
}
}
if (value != 0) {
cache[i] = getPaletteIndex(value);
value = getPaletteIndex(value);
count++;
} else {
cache[i] = 0;
}
cache[i] = value;
}
// Set values to final array
final int bitsPerEntry = this.bitsPerEntry;
final int valuesPerLong = VALUES_PER_LONG[bitsPerEntry];
long[] values = this.values;
if (values.length == 0) {
this.values = values = new long[(size + valuesPerLong - 1) / valuesPerLong];
// Update palette content
if (fillValue < 0) {
updateAll(cache);
this.count = count;
} else {
fill(fillValue);
}
final int magicMask = MAGIC_MASKS[bitsPerEntry];
for (int i = 0; i < values.length; i++) {
long block = values[i];
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;
block &= ~((long) magicMask << bitIndex);
block |= (long) cache[startIndex + j] << bitIndex;
}
values[i] = block;
}
this.count = count;
}
@Override
@ -282,7 +277,7 @@ final class PaletteImpl implements Palette, Cloneable {
count.setPlain(index + 1);
cache[index] = newValue != value ? getPaletteIndex(newValue) : value;
});
// Set values to final array
// Set values to final arrayUse setAll for generation
count.setPlain(0);
setAll((x, y, z) -> {
final int index = count.getPlain();
@ -352,6 +347,30 @@ final class PaletteImpl implements Palette, Cloneable {
return bitsPerEntry > maxBitsPerEntry ? 15 : bitsPerEntry;
}
private void updateAll(int[] paletteValues) {
final int size = this.size;
assert paletteValues.length >= size;
final int bitsPerEntry = this.bitsPerEntry;
final int valuesPerLong = VALUES_PER_LONG[bitsPerEntry];
long[] values = this.values;
if (values.length == 0) {
this.values = values = new long[(size + valuesPerLong - 1) / valuesPerLong];
}
final int magicMask = MAGIC_MASKS[bitsPerEntry];
for (int i = 0; i < values.length; i++) {
long block = values[i];
int index = i * valuesPerLong;
final int maxIndex = Math.min(index + valuesPerLong, size);
int bitIndex = 0;
for (; index < maxIndex; index++) {
block &= ~((long) magicMask << bitIndex);
block |= (long) paletteValues[index] << bitIndex;
bitIndex += bitsPerEntry;
}
values[i] = block;
}
}
private void resize(int newBitsPerEntry) {
newBitsPerEntry = fixBitsPerEntry(newBitsPerEntry);
PaletteImpl palette = new PaletteImpl(dimension, maxBitsPerEntry, newBitsPerEntry, bitsIncrement);

9
src/test/java/net/minestom/server/instance/PaletteTest.java
View File

@ -201,6 +201,15 @@ public class PaletteTest {
}
}
@Test
public void setAllConstant() {
var palettes = testPalettes();
for (Palette palette : palettes) {
palette.setAll((x, y, z) -> 1);
palette.getAll((x, y, z, value) -> assertEquals(1, value));
}
}
@Test
public void getAllPresent() {
var palettes = testPalettes();