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detect fma

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This commit is contained in:
Zoë Gidiere
2023-10-07 22:44:19 -06:00
parent f384d09376
commit dcddc0504e
4 changed files with 45 additions and 4 deletions
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11
common/addons/config-noise-function/src/main/java/com/dfsek/terra/addons/noise/samplers/noise/PseudoErosionSampler.java
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@@ -10,6 +10,8 @@ package com.dfsek.terra.addons.noise.samplers.noise;
import com.dfsek.terra.api.noise.NoiseSampler;
import com.dfsek.terra.api.util.MathUtil;
import com.google.errorprone.annotations.InlineMe;
import static com.dfsek.terra.addons.noise.samplers.noise.NoiseFunction.PRIME_X;
import static com.dfsek.terra.addons.noise.samplers.noise.NoiseFunction.PRIME_Y;
import static com.dfsek.terra.addons.noise.samplers.noise.NoiseFunction.hash;
@@ -229,6 +231,7 @@ public class PseudoErosionSampler implements NoiseSampler {
this.cellularJitter = 0.43701595 * jitterModifier;
}
public double getNoiseRaw(long sl, double x, double y) {
int seed = (int) sl;
double finalDistance = Double.MAX_VALUE;
@@ -248,8 +251,8 @@ public class PseudoErosionSampler implements NoiseSampler {
int gridYi = gridY + yi;
int jitterIdx = hash(seed, gridXiPrimed, gridYi * PRIME_Y) & (255 << 1);
double cellX = Math.fma(RAND_VECS_2D[jitterIdx], cellularJitter, gridXi);
double cellY = Math.fma(RAND_VECS_2D[jitterIdx | 1], cellularJitter, gridYi);
double cellX = MathUtil.fma(RAND_VECS_2D[jitterIdx], cellularJitter, gridXi);
double cellY = MathUtil.fma(RAND_VECS_2D[jitterIdx | 1], cellularJitter, gridYi);
// Transform to actual coordinates for lookup
double actualCellX = cellX * inverseFrequency;
@@ -322,7 +325,7 @@ public class PseudoErosionSampler implements NoiseSampler {
double x2dx = x - x2;
double y2dx = y - y2;
double dotProduct = Math.fma(ldy, y1dx, (ldx * x1dx));
double dotProduct = MathUtil.fma(ldy, y1dx, (ldx * x1dx));
double lt = dotProduct * invLineLengthSquared; // Position along the line
if (lt > 0) {
@@ -330,7 +333,7 @@ public class PseudoErosionSampler implements NoiseSampler {
} else if (lt < -1) {
return MathUtil.hypot(x2dx, y2dx); // Distance between point 2 and position
} else {
double distance = Math.fma(ldy, x1dx, (-(ldx * y1dx))) * Math.sqrt(invLineLengthSquared);
double distance = MathUtil.fma(ldy, x1dx, (-(ldx * y1dx))) * Math.sqrt(invLineLengthSquared);
return Math.abs(distance); // Distance from the line
}
}