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-rw-r--r--source/Generating/BioGen.cpp12
-rw-r--r--source/Generating/CompoGen.cpp4
-rw-r--r--source/Generating/DistortedHeightmap.cpp6
-rw-r--r--source/Generating/HeiGen.cpp2
-rw-r--r--source/Generating/Noise3DGenerator.cpp94
-rw-r--r--source/Generating/Noise3DGenerator.h13
-rw-r--r--source/Generating/StructGen.cpp4
-rw-r--r--source/LinearUpscale.h162
8 files changed, 241 insertions, 56 deletions
diff --git a/source/Generating/BioGen.cpp b/source/Generating/BioGen.cpp
index 1afa93e07..4345852c6 100644
--- a/source/Generating/BioGen.cpp
+++ b/source/Generating/BioGen.cpp
@@ -340,8 +340,8 @@ void cBioGenDistortedVoronoi::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::B
Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z]);
}
- ArrayLinearUpscale2DInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
- ArrayLinearUpscale2DInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+ LinearUpscale2DArrayInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+ LinearUpscale2DArrayInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
for (int z = 0; z < cChunkDef::Width; z++)
{
@@ -447,8 +447,8 @@ void cBioGenMultiStepMap::DecideOceanLandMushroom(int a_ChunkX, int a_ChunkZ, cC
{
Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z], DistortSize);
}
- ArrayLinearUpscale2DInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
- ArrayLinearUpscale2DInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+ LinearUpscale2DArrayInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+ LinearUpscale2DArrayInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
// Prepare a 9x9 area of neighboring cell seeds
// (assuming that 7x7 cell area is larger than a chunk being generated)
@@ -621,8 +621,8 @@ void cBioGenMultiStepMap::BuildTemperatureHumidityMaps(int a_ChunkX, int a_Chunk
HumidityMap[x + 17 * z] = NoiseH;
} // for x
} // for z
- ArrayLinearUpscale2DInPlace(TemperatureMap, 17, 17, 8, 8);
- ArrayLinearUpscale2DInPlace(HumidityMap, 17, 17, 8, 8);
+ LinearUpscale2DArrayInPlace(TemperatureMap, 17, 17, 8, 8);
+ LinearUpscale2DArrayInPlace(HumidityMap, 17, 17, 8, 8);
// Re-map into integral values in [0 .. 255] range:
for (int idx = 0; idx < ARRAYCOUNT(a_TemperatureMap); idx++)
diff --git a/source/Generating/CompoGen.cpp b/source/Generating/CompoGen.cpp
index 432616a36..b99919e0d 100644
--- a/source/Generating/CompoGen.cpp
+++ b/source/Generating/CompoGen.cpp
@@ -442,7 +442,7 @@ void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc)
m_Noise2.IntNoise3DInt(BaseX + INTERPOL_X * x, 0, BaseZ + INTERPOL_Z * z) /
256;
} // for x, z - FloorLo[]
- ArrayLinearUpscale2DInPlace(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
+ LinearUpscale2DArrayInPlace(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
// Interpolate segments:
for (int Segment = 0; Segment < MaxHeight; Segment += SEGMENT_HEIGHT)
@@ -455,7 +455,7 @@ void cCompoGenNether::ComposeTerrain(cChunkDesc & a_ChunkDesc)
m_Noise2.IntNoise3DInt(BaseX + INTERPOL_Z * x, Segment + SEGMENT_HEIGHT, BaseZ + INTERPOL_Z * z) /
256;
} // for x, z - FloorLo[]
- ArrayLinearUpscale2DInPlace(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
+ LinearUpscale2DArrayInPlace(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
// Interpolate between FloorLo and FloorHi:
for (int z = 0; z < 16; z++) for (int x = 0; x < 16; x++)
diff --git a/source/Generating/DistortedHeightmap.cpp b/source/Generating/DistortedHeightmap.cpp
index b90a30e45..9d60c0a92 100644
--- a/source/Generating/DistortedHeightmap.cpp
+++ b/source/Generating/DistortedHeightmap.cpp
@@ -158,7 +158,7 @@ void cDistortedHeightmap::GenerateHeightArray(void)
CurFloor[idx + x * INTERPOL_X] = (NOISE_DATATYPE)GetHeightmapAt(DistX, DistZ) + (NOISE_DATATYPE)0.5;
} // for x
} // for z
- ArrayLinearUpscale2DInPlace(CurFloor, 17, 17, INTERPOL_X, INTERPOL_Z);
+ LinearUpscale2DArrayInPlace(CurFloor, 17, 17, INTERPOL_X, INTERPOL_Z);
} // for y
// Finish the 3D linear interpolation by interpolating between each XZ-floors on the Y axis
@@ -381,8 +381,8 @@ void cDistortedHeightmap::UpdateDistortAmps(void)
GetDistortAmpsAt(Biomes, x, z, m_DistortAmpX[x + 17 * z], m_DistortAmpZ[x + 17 * z]);
}
}
- ArrayLinearUpscale2DInPlace(m_DistortAmpX, 17, 17, STEPX, STEPZ);
- ArrayLinearUpscale2DInPlace(m_DistortAmpZ, 17, 17, STEPX, STEPZ);
+ LinearUpscale2DArrayInPlace(m_DistortAmpX, 17, 17, STEPX, STEPZ);
+ LinearUpscale2DArrayInPlace(m_DistortAmpZ, 17, 17, STEPX, STEPZ);
}
diff --git a/source/Generating/HeiGen.cpp b/source/Generating/HeiGen.cpp
index 61f8b4cd7..2aa942c73 100644
--- a/source/Generating/HeiGen.cpp
+++ b/source/Generating/HeiGen.cpp
@@ -266,7 +266,7 @@ void cHeiGenBiomal::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMa
Height[x + 17 * z] = GetHeightAt(x, z, a_ChunkX, a_ChunkZ, Biomes);
}
}
- ArrayLinearUpscale2DInPlace(Height, 17, 17, STEPX, STEPZ);
+ LinearUpscale2DArrayInPlace(Height, 17, 17, STEPX, STEPZ);
// Copy into the heightmap
for (int z = 0; z < cChunkDef::Width; z++)
diff --git a/source/Generating/Noise3DGenerator.cpp b/source/Generating/Noise3DGenerator.cpp
index dbb577827..42a0d70d9 100644
--- a/source/Generating/Noise3DGenerator.cpp
+++ b/source/Generating/Noise3DGenerator.cpp
@@ -31,7 +31,7 @@ void Debug3DNoise(NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int a_Size
unsigned char buf[BUF_SIZE];
for (int x = 0; x < a_SizeX; x++)
{
- buf[x] = (unsigned char)(std::min(256, std::max(0, (int)(128 + 32 * a_Noise[idx++]))));
+ buf[x] = (unsigned char)(std::min(255, std::max(0, (int)(128 + 32 * a_Noise[idx++]))));
}
f1.Write(buf, a_SizeX);
} // for y
@@ -52,7 +52,7 @@ void Debug3DNoise(NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int a_Size
unsigned char buf[BUF_SIZE];
for (int x = 0; x < a_SizeX; x++)
{
- buf[x] = (unsigned char)(std::min(256, std::max(0, (int)(128 + 32 * a_Noise[idx++]))));
+ buf[x] = (unsigned char)(std::min(255, std::max(0, (int)(128 + 32 * a_Noise[idx++]))));
}
f2.Write(buf, a_SizeX);
} // for z
@@ -69,6 +69,37 @@ void Debug3DNoise(NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int a_Size
+/*
+// Perform an automatic test of upscaling upon program start (use breakpoints to debug):
+
+class Test
+{
+public:
+ Test(void)
+ {
+ DoTest1();
+ }
+
+
+ void DoTest1(void)
+ {
+ float In[3 * 3 * 3];
+ for (int i = 0; i < ARRAYCOUNT(In); i++)
+ {
+ In[i] = (float)(i % 5);
+ }
+ Debug3DNoise(In, 3, 3, 3, "Upscale in");
+ float Out[17 * 33 * 35];
+ LinearUpscale3DArray(In, 3, 3, 3, Out, 8, 16, 17);
+ Debug3DNoise(Out, 17, 33, 35, "Upscale test");
+ }
+} gTest;
+//*/
+
+
+
+
+
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cNoise3DGenerator:
@@ -190,15 +221,15 @@ void cNoise3DGenerator::GenerateBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::Bi
void cNoise3DGenerator::DoGenerate(int a_ChunkX, int a_ChunkZ, cChunkDesc & a_ChunkDesc)
{
- NOISE_DATATYPE Noise[cChunkDef::Width * cChunkDef::Height * cChunkDef::Width];
+ NOISE_DATATYPE Noise[17 * 257 * 17];
GenerateNoiseArray(a_ChunkX, a_ChunkZ, Noise);
// Output noise into chunk:
- int idx = 0;
for (int z = 0; z < cChunkDef::Width; z++)
{
for (int y = 0; y < cChunkDef::Height; y++)
{
+ int idx = z * 17 * 257 + y * 17;
for (int x = 0; x < cChunkDef::Width; x++)
{
NOISE_DATATYPE n = Noise[idx++];
@@ -226,8 +257,8 @@ void cNoise3DGenerator::DoGenerate(int a_ChunkX, int a_ChunkZ, cChunkDesc & a_Ch
void cNoise3DGenerator::GenerateNoiseArray(int a_ChunkX, int a_ChunkZ, NOISE_DATATYPE * a_OutNoise)
{
- NOISE_DATATYPE NoiseO[DIMX * DIMY * DIMZ]; // Output for the Perlin noise
- NOISE_DATATYPE NoiseW[DIMX * DIMY * DIMZ]; // Workspace that the noise calculation can use and trash
+ NOISE_DATATYPE NoiseO[DIM_X * DIM_Y * DIM_Z]; // Output for the Perlin noise
+ 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;
@@ -237,51 +268,42 @@ void cNoise3DGenerator::GenerateNoiseArray(int a_ChunkX, int a_ChunkZ, NOISE_DAT
NOISE_DATATYPE StartY = 0;
NOISE_DATATYPE EndY = ((NOISE_DATATYPE)256) / m_FrequencyY;
- m_Perlin.Generate3D(NoiseO, DIMX, DIMY, DIMZ, StartX, EndX, StartY, EndY, StartZ, EndZ, NoiseW);
+ m_Perlin.Generate3D(NoiseO, DIM_X, DIM_Y, DIM_Z, StartX, EndX, StartY, EndY, StartZ, EndZ, NoiseW);
- // DEBUG: Debug3DNoise(NoiseO, DIMX, DIMY, DIMZ, Printf("Chunk_%d_%d_orig", a_ChunkX, a_ChunkZ));
-
- // Linearly interpolate the Perlin noise into full-blown chunk dimensions:
- LinearInterpolate3DArray(
- NoiseO, DIMX, DIMY, DIMZ,
- a_OutNoise, cChunkDef::Width, cChunkDef::Height, cChunkDef::Width
- );
-
- // DEBUG: Debug3DNoise(a_OutNoise, cChunkDef::Width, cChunkDef::Height, cChunkDef::Width, Printf("Chunk_%d_%d_lerp", a_ChunkX, a_ChunkZ));
-
- // Modify the noise to account for the wanted elevation:
+ // DEBUG: Debug3DNoise(NoiseO, DIM_X, DIM_Y, DIM_Z, Printf("Chunk_%d_%d_orig", a_ChunkX, a_ChunkZ));
// Precalculate a "height" array:
- NOISE_DATATYPE Test1 = 0;
- NOISE_DATATYPE HeightS[DIMX * DIMZ]; // Output for the cubic noise heightmap ("source")
- NOISE_DATATYPE Test2 = 0;
- NOISE_DATATYPE Height[cChunkDef::Width * cChunkDef::Width]; // Lerp-ed heightmap [x + Width * z]
- m_Cubic.Generate2D(HeightS, DIMX, DIMZ, StartX / 25, EndX / 25, StartZ / 25, EndZ / 25);
- LinearInterpolate2DArray(
- HeightS, DIMX, DIMZ,
- Height, cChunkDef::Width, cChunkDef::Width
- );
+ 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);
for (int i = 0; i < ARRAYCOUNT(Height); i++)
{
Height[i] = abs(Height[i]) * m_HeightAmplification + 1;
}
- // Modify noise by height data
- for (int y = 0; y < cChunkDef::Height; y++)
+ // Modify the noise by height data:
+ for (int y = 0; y < DIM_Y; y++)
{
- NOISE_DATATYPE AddHeight = (y - m_MidPoint) / 20;
+ NOISE_DATATYPE AddHeight = (y * UPSCALE_Y - m_MidPoint) / 20;
AddHeight *= AddHeight * AddHeight;
- for (int z = 0; z < cChunkDef::Width; z++)
+ for (int z = 0; z < DIM_Z; z++)
{
- NOISE_DATATYPE * CurRow = &(a_OutNoise[y * cChunkDef::Width + z * cChunkDef::Width * cChunkDef::Height]);
- for (int x = 0; x < cChunkDef::Width; x++)
+ 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 + cChunkDef::Width * z];
+ CurRow[x] += AddHeight / Height[x + DIM_X * z];
}
}
}
+
+ // DEBUG: Debug3DNoise(NoiseO, DIM_X, DIM_Y, DIM_Z, Printf("Chunk_%d_%d_hei", a_ChunkX, a_ChunkZ));
+
+ // Upscale the Perlin noise into full-blown chunk dimensions:
+ LinearUpscale3DArray(
+ NoiseO, DIM_X, DIM_Y, DIM_Z,
+ a_OutNoise, UPSCALE_X, UPSCALE_Y, UPSCALE_Z
+ );
- // DEBUG: Debug3DNoise(a_OutNoise, cChunkDef::Width, cChunkDef::Height, cChunkDef::Width, Printf("Chunk_%d_%d", a_ChunkX, a_ChunkZ);
+ // DEBUG: Debug3DNoise(a_OutNoise, 17, 257, 17, Printf("Chunk_%d_%d_lerp", a_ChunkX, a_ChunkZ));
}
@@ -444,7 +466,7 @@ void cNoise3DComposable::GenerateNoiseArrayIfNeeded(int a_ChunkX, int a_ChunkZ)
}
}
// Linear-interpolate this XZ floor:
- ArrayLinearUpscale2DInPlace(CurFloor, 17, 17, UPSCALE_X, UPSCALE_Z);
+ LinearUpscale2DArrayInPlace(CurFloor, 17, 17, UPSCALE_X, UPSCALE_Z);
}
// Finish the 3D linear interpolation by interpolating between each XZ-floors on the Y axis
diff --git a/source/Generating/Noise3DGenerator.h b/source/Generating/Noise3DGenerator.h
index 57cf024f8..b23e8645b 100644
--- a/source/Generating/Noise3DGenerator.h
+++ b/source/Generating/Noise3DGenerator.h
@@ -29,10 +29,15 @@ public:
virtual void DoGenerate(int a_ChunkX, int a_ChunkZ, cChunkDesc & a_ChunkDesc) override;
protected:
- // Linear interpolation dimensions:
- static const int DIMX = 5;
- static const int DIMY = 65;
- static const int DIMZ = 5;
+ // Linear interpolation step sizes, must be divisors of cChunkDef::Width and cChunkDef::Height, respectively:
+ static const int UPSCALE_X = 8;
+ static const int UPSCALE_Y = 4;
+ static const int UPSCALE_Z = 8;
+
+ // Linear interpolation buffer dimensions, calculated from the step sizes:
+ static const int DIM_X = 1 + cChunkDef::Width / UPSCALE_X;
+ static const int DIM_Y = 1 + cChunkDef::Height / UPSCALE_Y;
+ static const int DIM_Z = 1 + cChunkDef::Width / UPSCALE_Z;
cPerlinNoise m_Perlin; // The base 3D noise source for the actual composition
cCubicNoise m_Cubic; // The noise used for heightmap directing
diff --git a/source/Generating/StructGen.cpp b/source/Generating/StructGen.cpp
index 505b4fa7a..2180261aa 100644
--- a/source/Generating/StructGen.cpp
+++ b/source/Generating/StructGen.cpp
@@ -559,7 +559,7 @@ void cStructGenDirectOverhangs::GenStructures(cChunkDesc & a_ChunkDesc)
m_Noise2.IntNoise3DInt(BaseX + INTERPOL_X * x, BaseY, BaseZ + INTERPOL_Z * z) /
256;
} // for x, z - FloorLo[]
- ArrayLinearUpscale2DInPlace(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
+ LinearUpscale2DArrayInPlace(FloorLo, 17, 17, INTERPOL_X, INTERPOL_Z);
// Interpolate segments:
for (int Segment = BaseY; Segment < MaxHeight; Segment += SEGMENT_HEIGHT)
@@ -572,7 +572,7 @@ void cStructGenDirectOverhangs::GenStructures(cChunkDesc & a_ChunkDesc)
m_Noise2.IntNoise3DInt(BaseX + INTERPOL_Z * x, Segment + SEGMENT_HEIGHT, BaseZ + INTERPOL_Z * z) /
256;
} // for x, z - FloorLo[]
- ArrayLinearUpscale2DInPlace(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
+ LinearUpscale2DArrayInPlace(FloorHi, 17, 17, INTERPOL_X, INTERPOL_Z);
// Interpolate between FloorLo and FloorHi:
for (int z = 0; z < 16; z++) for (int x = 0; x < 16; x++)
diff --git a/source/LinearUpscale.h b/source/LinearUpscale.h
index f8ba45350..60aa005bd 100644
--- a/source/LinearUpscale.h
+++ b/source/LinearUpscale.h
@@ -26,8 +26,11 @@ Regular upscaling takes two arrays and "moves" the input from src to dst; src is
-/// Linearly interpolates values in the array between the equidistant anchor points; universal data type
-template<typename TYPE> void ArrayLinearUpscale2DInPlace(
+/**
+Linearly interpolates values in the array between the equidistant anchor points (upscales).
+Works in-place (input is already present at the correct output coords)
+*/
+template<typename TYPE> void LinearUpscale2DArrayInPlace(
TYPE * a_Array,
int a_SizeX, int a_SizeY, // Dimensions of the array
int a_AnchorStepX, int a_AnchorStepY // Distances between the anchor points in each direction
@@ -74,3 +77,158 @@ template<typename TYPE> void ArrayLinearUpscale2DInPlace(
+/**
+Linearly interpolates values in the array between the equidistant anchor points (upscales).
+Works on two arrays, input is packed and output is to be completely constructed.
+*/
+template<typename TYPE> void LinearUpscale2DArray(
+ TYPE * a_Src, ///< Source array of size a_SrcSizeX x a_SrcSizeY
+ int a_SrcSizeX, int a_SrcSizeY, ///< Dimensions of the src array
+ TYPE * a_Dst, ///< Dest array, of size (a_SrcSizeX * a_UpscaleX + 1) x (a_SrcSizeY * a_UpscaleY + 1)
+ int a_UpscaleX, int a_UpscaleY ///< Upscale factor for each direction
+)
+{
+ ASSERT(a_Src != NULL);
+ ASSERT(a_Dst != NULL);
+ ASSERT(a_SrcSizeX > 0);
+ ASSERT(a_SrcSizeY > 0);
+ ASSERT(a_UpscaleX > 0);
+ ASSERT(a_UpscaleY > 0);
+
+ // First interpolate columns (same-Y) where the anchor points are:
+ int idx = 0;
+ for (int y = 0; y < a_SrcSizeY; y++)
+ {
+ int DstY = y * a_UpscaleY;
+ for (int x = 0; x < a_SrcSizeX; x++)
+ {
+ int DstX = x * a_UpscaleX;
+ TYPE StartValue = a_Src[idx]; // [x, y]
+ TYPE EndValue = a_Src[idx + a_SrcSizeX]; // [x, y + 1]
+ TYPE Diff = EndValue - StartValue;
+ for (int CellY = 0; CellY <= a_UpscaleY; CellY++)
+ {
+ a_Dst[DstX + (DstY + CellY) * a_SizeY] = StartValue + Diff * CellY / a_AnchorStepY;
+ } // for CellY
+ } // for x
+ } // for y
+
+ // Now interpolate in rows (same-X), each row already has valid values in the anchor columns
+ int DstSizeY = a_SizeY * a_UpscaleY;
+ int DstSizeX = a_SizeX * a_UpscaleX;
+ for (int y = 0; y < DstSizeY; y++)
+ {
+ int Idx = y * DstSizeX;
+ for (int x = 0; x < a_SizeX; x++)
+ {
+ TYPE StartValue = a_Dst[Idx]; // [x, y] in the src coords
+ TYPE EndValue = a_Dst[Idx + a_UpscaleX]; // [x + 1, y] in the src coords
+ TYPE Diff = EndValue - StartValue;
+ for (int CellX = 0; CellX <= a_UpscaleX; CellX++)
+ {
+ a_Dst[Idx + CellX] = StartValue + CellX * Diff / a_UpscaleX;
+ } // for CellY
+ Idx += a_UpscaleX;
+ }
+ }
+}
+
+
+
+
+
+/**
+Linearly interpolates values in the array between the equidistant anchor points (upscales).
+Works on two arrays, input is packed and output is to be completely constructed.
+*/
+template<typename TYPE> void LinearUpscale3DArray(
+ TYPE * a_Src, ///< Source array of size a_SrcSizeX x a_SrcSizeY x a_SrcSizeZ
+ int a_SrcSizeX, int a_SrcSizeY, int a_SrcSizeZ, ///< Dimensions of the src array
+ TYPE * a_Dst, ///< Dest array, of size (a_SrcSizeX * a_UpscaleX + 1) x (a_SrcSizeY * a_UpscaleY + 1) x (a_SrcSizeZ * a_UpscaleZ + 1)
+ int a_UpscaleX, int a_UpscaleY, int a_UpscaleZ ///< Upscale factor for each direction
+)
+{
+ // For optimization reasons, we're storing the upscaling ratios in a fixed-size arrays of these sizes
+ // Feel free to enlarge them if needed, but keep in mind that they're on the stack
+ const int MAX_UPSCALE_X = 128;
+ const int MAX_UPSCALE_Y = 128;
+ const int MAX_UPSCALE_Z = 128;
+
+ ASSERT(a_Src != NULL);
+ ASSERT(a_Dst != NULL);
+ ASSERT(a_SrcSizeX > 0);
+ ASSERT(a_SrcSizeY > 0);
+ ASSERT(a_SrcSizeZ > 0);
+ ASSERT(a_UpscaleX > 0);
+ ASSERT(a_UpscaleY > 0);
+ ASSERT(a_UpscaleZ > 0);
+ ASSERT(a_UpscaleX <= MAX_UPSCALE_X);
+ ASSERT(a_UpscaleY <= MAX_UPSCALE_Y);
+ ASSERT(a_UpscaleZ <= MAX_UPSCALE_Z);
+
+ // Pre-calculate the upscaling ratios:
+ TYPE RatioX[MAX_UPSCALE_X];
+ TYPE RatioY[MAX_UPSCALE_Y];
+ TYPE RatioZ[MAX_UPSCALE_Y];
+ for (int x = 0; x <= a_UpscaleX; x++)
+ {
+ RatioX[x] = (TYPE)x / a_UpscaleX;
+ }
+ for (int y = 0; y <= a_UpscaleY; y++)
+ {
+ RatioY[y] = (TYPE)y / a_UpscaleY;
+ }
+ for (int z = 0; z <= a_UpscaleZ; z++)
+ {
+ RatioZ[z] = (TYPE)z / a_UpscaleZ;
+ }
+
+ // Interpolate each XYZ cell:
+ int DstSizeX = (a_SrcSizeX - 1) * a_UpscaleX + 1;
+ int DstSizeY = (a_SrcSizeY - 1) * a_UpscaleY + 1;
+ int DstSizeZ = (a_SrcSizeZ - 1) * a_UpscaleZ + 1;
+ for (int z = 0; z < (a_SrcSizeZ - 1); z++)
+ {
+ int DstZ = z * a_UpscaleZ;
+ for (int y = 0; y < (a_SrcSizeY - 1); y++)
+ {
+ int DstY = y * a_UpscaleY;
+ int idx = y * a_SrcSizeX + z * a_SrcSizeX * a_SrcSizeY;
+ for (int x = 0; x < (a_SrcSizeX - 1); x++, idx++)
+ {
+ int DstX = x * a_UpscaleX;
+ TYPE LoXLoYLoZ = a_Src[idx];
+ TYPE LoXLoYHiZ = a_Src[idx + a_SrcSizeX * a_SrcSizeY];
+ TYPE LoXHiYLoZ = a_Src[idx + a_SrcSizeX];
+ TYPE LoXHiYHiZ = a_Src[idx + a_SrcSizeX + a_SrcSizeX * a_SrcSizeY];
+ TYPE HiXLoYLoZ = a_Src[idx + 1];
+ TYPE HiXLoYHiZ = a_Src[idx + 1 + a_SrcSizeX * a_SrcSizeY];
+ TYPE HiXHiYLoZ = a_Src[idx + 1 + a_SrcSizeX];
+ TYPE HiXHiYHiZ = a_Src[idx + 1 + a_SrcSizeX + a_SrcSizeX * a_SrcSizeY];
+ for (int CellZ = 0; CellZ <= a_UpscaleZ; CellZ++)
+ {
+ TYPE LoXLoYInZ = LoXLoYLoZ + (LoXLoYHiZ - LoXLoYLoZ) * RatioZ[CellZ];
+ TYPE LoXHiYInZ = LoXHiYLoZ + (LoXHiYHiZ - LoXHiYLoZ) * RatioZ[CellZ];
+ TYPE HiXLoYInZ = HiXLoYLoZ + (HiXLoYHiZ - HiXLoYLoZ) * RatioZ[CellZ];
+ TYPE HiXHiYInZ = HiXHiYLoZ + (HiXHiYHiZ - HiXHiYLoZ) * RatioZ[CellZ];
+ for (int CellY = 0; CellY <= a_UpscaleY; CellY++)
+ {
+ int DestIdx = (DstZ + CellZ) * DstSizeX * DstSizeY + (DstY + CellY) * DstSizeX + DstX;
+ ASSERT(DestIdx + a_UpscaleX < DstSizeX * DstSizeY * DstSizeZ);
+ TYPE LoXInY = LoXLoYInZ + (LoXHiYInZ - LoXLoYInZ) * RatioY[CellY];
+ TYPE HiXInY = HiXLoYInZ + (HiXHiYInZ - HiXLoYInZ) * RatioY[CellY];
+ for (int CellX = 0; CellX <= a_UpscaleX; CellX++, DestIdx++)
+ {
+ a_Dst[DestIdx] = LoXInY + (HiXInY - LoXInY) * RatioX[CellX];
+ }
+ } // for CellY
+ } // for CellZ
+ } // for x
+ } // for y
+ } // for z
+}
+
+
+
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 18:28:46 +0100