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-rw-r--r--src/Generating/Noise3DGenerator.cpp198
1 files changed, 160 insertions, 38 deletions
diff --git a/src/Generating/Noise3DGenerator.cpp b/src/Generating/Noise3DGenerator.cpp
index 4e45aa18b..78b739d32 100644
--- a/src/Generating/Noise3DGenerator.cpp
+++ b/src/Generating/Noise3DGenerator.cpp
@@ -6,6 +6,7 @@
#include "Globals.h"
#include "Noise3DGenerator.h"
#include "../OSSupport/File.h"
+#include "../OSSupport/Timer.h"
#include "../IniFile.h"
#include "../LinearInterpolation.h"
#include "../LinearUpscale.h"
@@ -61,30 +62,86 @@ public:
-/** Linearly interpolates between two values.
-Assumes that a_Ratio is in range [0, 1]. */
-inline static NOISE_DATATYPE Lerp(NOISE_DATATYPE a_Val1, NOISE_DATATYPE a_Val2, NOISE_DATATYPE a_Ratio)
+#if 0
+// Perform speed test of the cInterpolNoise class
+static class cInterpolNoiseSpeedTest
{
- return a_Val1 + (a_Val2 - a_Val1) * a_Ratio;
-}
-
+public:
+ cInterpolNoiseSpeedTest(void)
+ {
+ TestSpeed2D();
+ TestSpeed3D();
+ printf("InterpolNoise speed comparison finished.\n");
+ }
+ /** Compare the speed of the 3D InterpolNoise vs 3D CubicNoise. */
+ void TestSpeed3D(void)
+ {
+ printf("Evaluating 3D noise performance...\n");
+ static const int SIZE_X = 128;
+ static const int SIZE_Y = 128;
+ static const int SIZE_Z = 128;
+ static const NOISE_DATATYPE MUL = 80;
+ std::unique_ptr<NOISE_DATATYPE[]> arr(new NOISE_DATATYPE[SIZE_X * SIZE_Y * SIZE_Z]);
+ cTimer timer;
+ // Test the cInterpolNoise:
+ cInterpolNoise<Interp5Deg> interpNoise(1);
+ long long start = timer.GetNowTime();
+ for (int i = 0; i < 30; i++)
+ {
+ interpNoise.Generate3D(arr.get(), SIZE_X, SIZE_Y, SIZE_Z, MUL * i, MUL * i + MUL, 0, MUL, 0, MUL);
+ }
+ long long end = timer.GetNowTime();
+ printf("InterpolNoise took %.02f sec\n", static_cast<float>(end - start) / 1000);
-/** Linearly interpolates between two values, clamping the ratio to [0, 1] first. */
-inline static NOISE_DATATYPE ClampedLerp(NOISE_DATATYPE a_Val1, NOISE_DATATYPE a_Val2, NOISE_DATATYPE a_Ratio)
-{
- if (a_Ratio < 0)
- {
- return a_Val1;
+ // Test the cCubicNoise:
+ cCubicNoise cubicNoise(1);
+ start = timer.GetNowTime();
+ for (int i = 0; i < 30; i++)
+ {
+ cubicNoise.Generate3D(arr.get(), SIZE_X, SIZE_Y, SIZE_Z, MUL * i, MUL * i + MUL, 0, MUL, 0, MUL);
+ }
+ end = timer.GetNowTime();
+ printf("CubicNoise took %.02f sec\n", static_cast<float>(end - start) / 1000);
+ printf("3D noise performance comparison finished.\n");
}
- if (a_Ratio > 1)
+
+
+ /** Compare the speed of the 2D InterpolNoise vs 2D CubicNoise. */
+ void TestSpeed2D(void)
{
- return a_Val2;
+ printf("Evaluating 2D noise performance...\n");
+ static const int SIZE_X = 128;
+ static const int SIZE_Y = 128;
+ static const NOISE_DATATYPE MUL = 80;
+ std::unique_ptr<NOISE_DATATYPE[]> arr(new NOISE_DATATYPE[SIZE_X * SIZE_Y]);
+ cTimer timer;
+
+ // Test the cInterpolNoise:
+ cInterpolNoise<Interp5Deg> interpNoise(1);
+ long long start = timer.GetNowTime();
+ for (int i = 0; i < 500; i++)
+ {
+ interpNoise.Generate2D(arr.get(), SIZE_X, SIZE_Y, MUL * i, MUL * i + MUL, 0, MUL);
+ }
+ long long end = timer.GetNowTime();
+ printf("InterpolNoise took %.02f sec\n", static_cast<float>(end - start) / 1000);
+
+ // Test the cCubicNoise:
+ cCubicNoise cubicNoise(1);
+ start = timer.GetNowTime();
+ for (int i = 0; i < 500; i++)
+ {
+ cubicNoise.Generate2D(arr.get(), SIZE_X, SIZE_Y, MUL * i, MUL * i + MUL, 0, MUL);
+ }
+ end = timer.GetNowTime();
+ printf("CubicNoise took %.02f sec\n", static_cast<float>(end - start) / 1000);
+ printf("2D noise performance comparison finished.\n");
}
- return Lerp(a_Val1, a_Val2, a_Ratio);
-}
+} g_InterpolNoiseSpeedTest;
+#endif
@@ -98,9 +155,17 @@ cNoise3DGenerator::cNoise3DGenerator(cChunkGenerator & a_ChunkGenerator) :
m_Perlin(1000),
m_Cubic(1000)
{
- m_Perlin.AddOctave(1, (NOISE_DATATYPE)0.5);
- m_Perlin.AddOctave((NOISE_DATATYPE)0.5, 1);
- m_Perlin.AddOctave((NOISE_DATATYPE)0.5, 2);
+ m_Perlin.AddOctave(1, 1);
+ m_Perlin.AddOctave(2, 0.5);
+ m_Perlin.AddOctave(4, 0.25);
+ m_Perlin.AddOctave(8, 0.125);
+ m_Perlin.AddOctave(16, 0.0625);
+
+ m_Cubic.AddOctave(1, 1);
+ m_Cubic.AddOctave(2, 0.5);
+ m_Cubic.AddOctave(4, 0.25);
+ m_Cubic.AddOctave(8, 0.125);
+ m_Cubic.AddOctave(16, 0.0625);
#if 0
// DEBUG: Test the noise generation:
@@ -183,8 +248,8 @@ void cNoise3DGenerator::Initialize(cIniFile & a_IniFile)
{
// Params:
m_SeaLevel = a_IniFile.GetValueSetI("Generator", "Noise3DSeaLevel", 62);
- m_HeightAmplification = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DHeightAmplification", 0);
- m_MidPoint = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DMidPoint", 75);
+ m_HeightAmplification = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DHeightAmplification", 0.1);
+ m_MidPoint = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DMidPoint", 68);
m_FrequencyX = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyX", 8);
m_FrequencyY = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyY", 8);
m_FrequencyZ = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyZ", 8);
@@ -249,10 +314,10 @@ void cNoise3DGenerator::GenerateNoiseArray(int a_ChunkX, int a_ChunkZ, NOISE_DAT
NOISE_DATATYPE NoiseW[DIM_X * DIM_Y * DIM_Z]; // Workspace that the noise calculation can use and trash
// Our noise array has different layout, XZY, instead of regular chunk's XYZ, that's why the coords are "renamed"
- NOISE_DATATYPE StartX = ((NOISE_DATATYPE)(a_ChunkX * cChunkDef::Width)) / m_FrequencyX;
- NOISE_DATATYPE EndX = ((NOISE_DATATYPE)((a_ChunkX + 1) * cChunkDef::Width) - 1) / m_FrequencyX;
- NOISE_DATATYPE StartZ = ((NOISE_DATATYPE)(a_ChunkZ * cChunkDef::Width)) / m_FrequencyZ;
- NOISE_DATATYPE EndZ = ((NOISE_DATATYPE)((a_ChunkZ + 1) * cChunkDef::Width) - 1) / m_FrequencyZ;
+ NOISE_DATATYPE StartX = ((NOISE_DATATYPE)(a_ChunkX * cChunkDef::Width)) / m_FrequencyX;
+ NOISE_DATATYPE EndX = ((NOISE_DATATYPE)((a_ChunkX + 1) * cChunkDef::Width)) / m_FrequencyX;
+ NOISE_DATATYPE StartZ = ((NOISE_DATATYPE)(a_ChunkZ * cChunkDef::Width)) / m_FrequencyZ;
+ NOISE_DATATYPE EndZ = ((NOISE_DATATYPE)((a_ChunkZ + 1) * cChunkDef::Width)) / m_FrequencyZ;
NOISE_DATATYPE StartY = 0;
NOISE_DATATYPE EndY = ((NOISE_DATATYPE)256) / m_FrequencyY;
@@ -262,23 +327,23 @@ void cNoise3DGenerator::GenerateNoiseArray(int a_ChunkX, int a_ChunkZ, NOISE_DAT
// Precalculate a "height" array:
NOISE_DATATYPE Height[DIM_X * DIM_Z]; // Output for the cubic noise heightmap ("source")
- m_Cubic.Generate2D(Height, DIM_X, DIM_Z, StartX / 25, EndX / 25, StartZ / 25, EndZ / 25);
+ m_Cubic.Generate2D(Height, DIM_X, DIM_Z, StartX / 5, EndX / 5, StartZ / 5, EndZ / 5);
for (size_t i = 0; i < ARRAYCOUNT(Height); i++)
{
- Height[i] = std::abs(Height[i]) * m_HeightAmplification + 1;
+ Height[i] = Height[i] * m_HeightAmplification;
}
// Modify the noise by height data:
for (int y = 0; y < DIM_Y; y++)
{
- NOISE_DATATYPE AddHeight = (y * UPSCALE_Y - m_MidPoint) / 20;
- AddHeight *= AddHeight * AddHeight;
+ NOISE_DATATYPE AddHeight = (y * UPSCALE_Y - m_MidPoint) / 30;
+ // AddHeight *= AddHeight * AddHeight;
for (int z = 0; z < DIM_Z; z++)
{
NOISE_DATATYPE * CurRow = &(NoiseO[y * DIM_X + z * DIM_X * DIM_Y]);
for (int x = 0; x < DIM_X; x++)
{
- CurRow[x] += AddHeight / Height[x + DIM_X * z];
+ CurRow[x] += AddHeight + Height[x + DIM_X * z];
}
}
}
@@ -756,14 +821,71 @@ void cBiomalNoise3DComposable::GetBiomeParams(EMCSBiome a_Biome, NOISE_DATATYPE
{
switch (a_Biome)
{
- case biDesert: a_HeightAmp = 0.29f; a_MidPoint = 62; break; // Needs verification
- case biExtremeHills: a_HeightAmp = 0.045f; a_MidPoint = 75; break;
- case biExtremeHillsPlus: a_HeightAmp = 0.04f; a_MidPoint = 80; break;
- case biFrozenRiver: a_HeightAmp = 0.4f; a_MidPoint = 53; break;
- case biPlains: a_HeightAmp = 0.3f; a_MidPoint = 62; break; // Needs verification
- case biRiver: a_HeightAmp = 0.4f; a_MidPoint = 53; break;
- case biSwampland: a_HeightAmp = 0.25f; a_MidPoint = 59; break;
- case biSwamplandM: a_HeightAmp = 0.11f; a_MidPoint = 59; break;
+ case biBeach: a_HeightAmp = 0.3f; a_MidPoint = 62; break;
+ case biBirchForest: a_HeightAmp = 0.1f; a_MidPoint = 64; break;
+ case biBirchForestHills: a_HeightAmp = 0.075f; a_MidPoint = 68; break;
+ case biBirchForestHillsM: a_HeightAmp = 0.075f; a_MidPoint = 68; break;
+ case biBirchForestM: a_HeightAmp = 0.1f; a_MidPoint = 64; break;
+ case biColdBeach: a_HeightAmp = 0.3f; a_MidPoint = 62; break;
+ case biDesertHills: a_HeightAmp = 0.075f; a_MidPoint = 68; break;
+ case biDeepOcean: a_HeightAmp = 0.17f; a_MidPoint = 35; break;
+ case biDesert: a_HeightAmp = 0.29f; a_MidPoint = 62; break;
+ case biEnd: a_HeightAmp = 0.15f; a_MidPoint = 64; break;
+ case biExtremeHills: a_HeightAmp = 0.045f; a_MidPoint = 75; break;
+ case biExtremeHillsPlus: a_HeightAmp = 0.04f; a_MidPoint = 80; break;
+ case biFlowerForest: a_HeightAmp = 0.1f; a_MidPoint = 64; break;
+ case biForest: a_HeightAmp = 0.1f; a_MidPoint = 64; break;
+ case biForestHills: a_HeightAmp = 0.075f; a_MidPoint = 68; break;
+ case biFrozenRiver: a_HeightAmp = 0.4f; a_MidPoint = 53; break;
+ case biFrozenOcean: a_HeightAmp = 0.17f; a_MidPoint = 47; break;
+ case biIceMountains: a_HeightAmp = 0.075f; a_MidPoint = 68; break;
+ case biIcePlains: a_HeightAmp = 0.3f; a_MidPoint = 62; break;
+ case biIcePlainsSpikes: a_HeightAmp = 0.3f; a_MidPoint = 62; break;
+ case biJungle: a_HeightAmp = 0.1f; a_MidPoint = 63; break;
+ case biJungleHills: a_HeightAmp = 0.075f; a_MidPoint = 68; break;
+ case biJungleM: a_HeightAmp = 0.1f; a_MidPoint = 63; break;
+ case biMegaSpruceTaigaHills: a_HeightAmp = 0.075f; a_MidPoint = 68; break;
+ case biMegaTaigaHills: a_HeightAmp = 0.075f; a_MidPoint = 68; break;
+ case biMushroomShore: a_HeightAmp = 0.15f; a_MidPoint = 15; break;
+ case biOcean: a_HeightAmp = 0.3f; a_MidPoint = 62; break;
+ case biPlains: a_HeightAmp = 0.3f; a_MidPoint = 62; break;
+ case biRiver: a_HeightAmp = 0.4f; a_MidPoint = 53; break;
+ case biSwampland: a_HeightAmp = 0.25f; a_MidPoint = 59; break;
+ case biSwamplandM: a_HeightAmp = 0.11f; a_MidPoint = 59; break;
+ case biTaigaHills: a_HeightAmp = 0.075f; a_MidPoint = 68; break;
+
+ /*
+ // Still missing:
+ case biColdTaiga: a_HeightAmp = 0.15f; a_MidPoint = 30; break;
+ case biColdTaigaHills: a_HeightAmp = 0.15f; a_MidPoint = 31; break;
+ case biColdTaigaM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biDesertM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biExtremeHillsEdge: a_HeightAmp = 0.15f; a_MidPoint = 20; break;
+ case biExtremeHillsM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biExtremeHillsPlusM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biJungleEdge: a_HeightAmp = 0.15f; a_MidPoint = 23; break;
+ case biJungleEdgeM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biMegaSpruceTaiga: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biMegaTaiga: a_HeightAmp = 0.15f; a_MidPoint = 32; break;
+ case biMesa: a_HeightAmp = 0.15f; a_MidPoint = 37; break;
+ case biMesaBryce: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biMesaPlateau: a_HeightAmp = 0.15f; a_MidPoint = 39; break;
+ case biMesaPlateauF: a_HeightAmp = 0.15f; a_MidPoint = 38; break;
+ case biMesaPlateauFM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biMesaPlateauM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biMushroomIsland: a_HeightAmp = 0.15f; a_MidPoint = 14; break;
+ case biNether: a_HeightAmp = 0.15f; a_MidPoint = 68; break;
+ case biRoofedForest: a_HeightAmp = 0.15f; a_MidPoint = 29; break;
+ case biRoofedForestM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biSavanna: a_HeightAmp = 0.15f; a_MidPoint = 35; break;
+ case biSavannaM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biSavannaPlateau: a_HeightAmp = 0.15f; a_MidPoint = 36; break;
+ case biSavannaPlateauM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biStoneBeach: a_HeightAmp = 0.15f; a_MidPoint = 25; break;
+ case biSunflowerPlains: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ case biTaiga: a_HeightAmp = 0.15f; a_MidPoint = 65; break;
+ case biTaigaM: a_HeightAmp = 0.15f; a_MidPoint = 70; break;
+ */
default:
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 03:32:03 +0100