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sand.cu
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///nvcc -o fil main.cu -O3 -m=64 -arch=compute_61 -code=sm_61 -Xptxas -allow-expensive-optimizations=true -Xptxas -v
#include <iostream>
#include <chrono>
#include <fstream>
#include <algorithm>
#include <inttypes.h>
#include <bitset>
#include <iostream>
#include <vector>
#include <map>
#include <iomanip>
#include <fstream>
#include <chrono>
#include <mutex>
#include <time.h>
#include "lcg.h"
#ifdef BOINC
#include "boinc_api.h"
#if defined _WIN32 || defined _WIN64
#include "boinc_win.h"
#endif
#endif
uint64_t millis() {return (std::chrono::duration_cast< std::chrono::milliseconds >(std::chrono::system_clock::now().time_since_epoch())).count();}
#define GPU_ASSERT(code) gpuAssert((code), __FILE__, __LINE__)
inline void gpuAssert(cudaError_t code, const char *file, int line) {
if (code != cudaSuccess) {
fprintf(stderr, "GPUassert: %s (code %d) %s %d\n", cudaGetErrorString(code), code, file, line);
exit(code);
}
}
// ===== LCG IMPLEMENTATION ===== //
namespace java_lcg { //region Java LCG
#define Random uint64_t
#define RANDOM_MULTIPLIER 0x5DEECE66DULL
#define RANDOM_ADDEND 0xBULL
#define RANDOM_MASK ((1ULL << 48u) - 1)
#define get_random(seed) ((Random)((seed ^ RANDOM_MULTIPLIER) & RANDOM_MASK))
__host__ __device__ __forceinline__ static int32_t random_next(Random *random, int bits) {
*random = (*random * RANDOM_MULTIPLIER + RANDOM_ADDEND) & RANDOM_MASK;
return (int32_t) (*random >> (48u - bits));
}
__device__ __forceinline__ static int32_t random_next_int(Random *random, const uint16_t bound) {
int32_t r = random_next(random, 31);
const uint16_t m = bound - 1u;
if ((bound & m) == 0) {
r = (int32_t) ((bound * (uint64_t) r) >> 31u);
} else {
for (int32_t u = r;
u - (r = u % bound) + m < 0;
u = random_next(random, 31));
}
return r;
}
__device__ __host__ __forceinline__ static int32_t random_next_int_nonpow(Random *random, const uint16_t bound) {
int32_t r = random_next(random, 31);
const uint16_t m = bound - 1u;
for (int32_t u = r;
u - (r = u % bound) + m < 0;
u = random_next(random, 31));
return r;
}
__host__ __device__ __forceinline__ static double next_double(Random *random) {
return (double) ((((uint64_t) ((uint32_t) random_next(random, 26)) << 27u)) + random_next(random, 27)) / (double)(1ULL << 53);
}
__host__ __device__ __forceinline__ static uint64_t random_next_long (Random *random) {
return (((uint64_t)random_next(random, 32)) << 32u) + (int32_t)random_next(random, 32);
}
__host__ __device__ __forceinline__ static void advance2(Random *random) {
*random = (*random * 0xBB20B4600A69LLU + 0x40942DE6BALLU) & RANDOM_MASK;
}
__host__ __device__ __forceinline__ static void advance3759(Random *random) {
*random = (*random * 0x6FE85C031F25LLU + 0x8F50ECFF899LLU) & RANDOM_MASK;
}
}
using namespace java_lcg;
namespace device_intrinsics { //region DEVICE INTRINSICS
#define DEVICE_STATIC_INTRINSIC_QUALIFIERS static __device__ __forceinline__
#if (defined(_MSC_VER) && defined(_WIN64)) || defined(__LP64__)
#define PXL_GLOBAL_PTR "l"
#else
#define PXL_GLOBAL_PTR "r"
#endif
DEVICE_STATIC_INTRINSIC_QUALIFIERS void __prefetch_local_l1(const void* const ptr)
{
asm("prefetch.local.L1 [%0];" : : PXL_GLOBAL_PTR(ptr));
}
DEVICE_STATIC_INTRINSIC_QUALIFIERS void __prefetch_global_uniform(const void* const ptr)
{
asm("prefetchu.L1 [%0];" : : PXL_GLOBAL_PTR(ptr));
}
DEVICE_STATIC_INTRINSIC_QUALIFIERS void __prefetch_local_l2(const void* const ptr)
{
asm("prefetch.local.L2 [%0];" : : PXL_GLOBAL_PTR(ptr));
}
#if __CUDA__ < 10
#define __ldg(ptr) (*(ptr))
#endif
}
using namespace device_intrinsics;
#define BLOCK_SIZE (128)
//#define BLOCK_SIZE (128)
#define WORK_SIZE_BITS 16
#define SEEDS_PER_CALL ((1ULL << (WORK_SIZE_BITS)) * (BLOCK_SIZE))
//#define SEEDS_PER_CALL 8000000
//Specifying where the (1 = dirt/grass, 0 = sand) is
// This will match the seed 76261196830436 (not pack.png ofc)
// Double match: 76261206560653 (almost 100% confirmed, sans very last bit of sand in first match)
// Triple match: 76273693341674 (100% match)
#define CHUNK_X 6
#define CHUNK_Z -1
#define INNER_X_START 4
#define INNER_Z_START 0
#define INNER_X_END 13
#define INNER_Z_END 2
__constant__ uint8_t DIRT_HEIGHT_2D[INNER_Z_END - INNER_Z_START + 1][INNER_X_END - INNER_X_START + 1] = {{1,15,15,15,1,15,0,15,15,15},
{15,1,15,15,15,1,15,1,15,15},
{15,15,1,1,15,15,1,1,1,0}};
__constant__ double LocalNoise2D[INNER_Z_END - INNER_Z_START + 1][INNER_X_END - INNER_X_START + 1];
#define EARLY_RETURN (INNER_Z_END * 16 + INNER_X_END)
#define CHUNK_X_2 6
#define CHUNK_Z_2 -2
#define INNER_X_START_2 0
#define INNER_Z_START_2 6
#define INNER_X_END_2 9
#define INNER_Z_END_2 15
__constant__ uint8_t DIRT_HEIGHT_2D_2[INNER_Z_END_2 - INNER_Z_START_2 + 1][INNER_X_END_2 - INNER_X_START_2 + 1] = {{0,15,15,15,15,15,15,15,15,15},
{15,0,0,15,15,15,15,15,15,15},
{0,15,15,0,15,15,15,15,15,15},
{15,1,15,15,0,15,15,15,15,15},
{15,15,0,15,15,0,15,15,15,15},
{15,15,15,0,15,0,15,15,15,15},
{15,15,15,15,0,15,0,15,15,15},
{0,15,15,15,15,0,0,15,15,15},
{0,0,15,15,15,15,0,0,0,15},
{15,15,0,0,15,15,15,0,15,0}};
__constant__ double LocalNoise2D_2[INNER_Z_END_2 - INNER_Z_START_2 + 1][INNER_X_END_2 - INNER_X_START_2 + 1];
#define CHUNK_X_3 5
#define CHUNK_Z_3 -1
#define INNER_X_START_3 4
#define INNER_Z_START_3 0
#define INNER_X_END_3 15
#define INNER_Z_END_3 10
__constant__ uint8_t DIRT_HEIGHT_2D_3[INNER_Z_END_3 - INNER_Z_START_3 + 1][INNER_X_END_3 - INNER_X_START_3 + 1] = {{1,1,15,15,15,15,15,15,15,15,0,15},
{15,15,15,15,15,15,15,15,15,15,0,15},
{15,15,15,15,15,15,15,15,15,15,15,0},
{15,15,15,0,15,15,15,15,15,15,15,0},
{15,15,15,1,15,15,15,15,15,15,15,15},
{15,15,15,0,15,15,15,15,15,15,15,0},
{15,15,15,15,15,15,15,15,15,15,15,15},
{15,15,0,15,15,15,15,15,15,15,15,15},
{15,15,1,15,15,15,15,15,15,15,15,15},
{15,15,15,1,15,15,15,15,15,15,15,15},
{15,15,15,0,15,15,15,15,15,15,15,15}};
__constant__ double LocalNoise2D_3[INNER_Z_END_3 - INNER_Z_START_3 + 1][INNER_X_END_3 - INNER_X_START_3 + 1];
/*
//Old test: matches 104703450999364
#define CHUNK_X 2
#define CHUNK_Z 11
#define INNER_X_START 2
#define INNER_Z_START 0
#define INNER_X_END 11
#define INNER_Z_END 0
__constant__ uint8_t DIRT_HEIGHT_2D[INNER_Z_END - INNER_Z_START + 1][INNER_X_END - INNER_X_START + 1] = {{0,15,0,1,0,15,15,15,15,1}};
__constant__ double LocalNoise2D[INNER_Z_END - INNER_Z_START + 1][INNER_X_END - INNER_X_START + 1];
*/
//The generation of the simplex layers and noise
namespace noise { //region Simplex layer gen
/* End of constant for simplex noise*/
struct Octave {
double xo;
double yo;
double zo;
uint8_t permutations[256];
};
__shared__ uint8_t permutations[256][BLOCK_SIZE];
#define getValue(array, index) array[index][threadIdx.x]
#define setValue(array, index, value) array[index][threadIdx.x] = value
__device__ static inline void setupNoise(const uint8_t nbOctaves, Random *random, Octave resultArray[]) {
for (int j = 0; j < nbOctaves; ++j) {
__prefetch_local_l2(&resultArray[j]);
resultArray[j].xo = next_double(random) * 256.0;
resultArray[j].yo = next_double(random) * 256.0;
resultArray[j].zo = next_double(random) * 256.0;
#pragma unroll
for(int w = 0; w<256; w++) {
setValue(permutations, w, w);
}
for(int index = 0; index<256; index++) {
uint32_t randomIndex = random_next_int(random, 256ull - index) + index;
//if (randomIndex != index) {
// swap
uint8_t v1 = getValue(permutations,index);
//uint8_t v2 = getValue(permutations,randomIndex);
setValue(permutations,index, getValue(permutations,randomIndex));
setValue(permutations, randomIndex, v1);
//}
}
#pragma unroll
for(int c = 0; c<256;c++) {
__prefetch_local_l1(&(resultArray[j].permutations[c+1]));
resultArray[j].permutations[c] = getValue(permutations,c);
}
//resultArray[j].xo = xo;
//resultArray[j].yo = yo;
//resultArray[j].zo = zo;
}
}
__device__ static inline void SkipNoiseGen(const uint8_t nbOctaves, Random* random) {
for (int j = 0; j < nbOctaves; ++j) {
lcg::advance<2*3>(*random);
for(int index = 0; index<256; index++) {
random_next_int(random, 256ull - index);
}
}
}
__device__ static inline double lerp(double x, double a, double b) {
return a + x * (b - a);
}
__device__ static inline double grad(uint8_t hash, double x, double y, double z) {
switch (hash & 0xFu) {
case 0x0:
return x + y;
case 0x1:
return -x + y;
case 0x2:
return x - y;
case 0x3:
return -x - y;
case 0x4:
return x + z;
case 0x5:
return -x + z;
case 0x6:
return x - z;
case 0x7:
return -x - z;
case 0x8:
return y + z;
case 0x9:
return -y + z;
case 0xA:
return y - z;
case 0xB:
return -y - z;
case 0xC:
return y + x;
case 0xD:
return -y + z;
case 0xE:
return y - x;
case 0xF:
return -y - z;
default:
return 0; // never happens
}
}
__device__ static inline void generateNormalPermutations(double *buffer, double x, double y, double z, int sizeX, int sizeY, int sizeZ, double noiseFactorX, double noiseFactorY, double noiseFactorZ, double octaveSize, Random* random) {
double xo = lcg::next_double(*random) * 256.0;
double yo = lcg::next_double(*random) * 256.0;
double zo = lcg::next_double(*random) * 256.0;
//Setup the permutation fresh xD
#pragma unroll
for(int w = 0; w<256; w++) {
setValue(permutations, w, w);
}
for(int index = 0; index<256; index++) {
uint32_t randomIndex = lcg::dynamic_next_int(*random, 256ull - index) + index;
//if (randomIndex != index) {
// swap
uint8_t v1 = getValue(permutations,index);
uint8_t v2 = getValue(permutations,randomIndex);
setValue(permutations,index, v2);
setValue(permutations, randomIndex, v1);
//}
}
double octaveWidth = 1.0 / octaveSize;
int32_t i2 = -1;
double x1 = 0.0;
double x2 = 0.0;
double xx1 = 0.0;
double xx2 = 0.0;
double t;
double w;
int columnIndex = 0;
for (int X = 0; X < sizeX; X++) {
double xCoord = (x + (double) X) * noiseFactorX + xo;
auto clampedXcoord = (int32_t) xCoord;
if (xCoord < (double) clampedXcoord) {
clampedXcoord--;
}
auto xBottoms = (uint8_t) ((uint32_t) clampedXcoord & 0xffu);
xCoord -= clampedXcoord;
t = xCoord * 6 - 15;
w = (xCoord * t + 10);
double fadeX = xCoord * xCoord * xCoord * w;
for (int Z = 0; Z < sizeZ; Z++) {
double zCoord = zo;
auto clampedZCoord = (int32_t) zCoord;
if (zCoord < (double) clampedZCoord) {
clampedZCoord--;
}
auto zBottoms = (uint8_t) ((uint32_t) clampedZCoord & 0xffu);
zCoord -= clampedZCoord;
t = zCoord * 6 - 15;
w = (zCoord * t + 10);
double fadeZ = zCoord * zCoord * zCoord * w;
for (int Y = 0; Y < sizeY; Y++) {
double yCoords = (y + (double) Y) * noiseFactorY + yo;
auto clampedYCoords = (int32_t) yCoords;
if (yCoords < (double) clampedYCoords) {
clampedYCoords--;
}
auto yBottoms = (uint8_t) ((uint32_t) clampedYCoords & 0xffu);
yCoords -= clampedYCoords;
t = yCoords * 6 - 15;
w = yCoords * t + 10;
double fadeY = yCoords * yCoords * yCoords * w;
// ZCoord
if (Y == 0 || yBottoms != i2) { // this is wrong on so many levels, same ybottoms doesnt mean x and z were the same...
i2 = yBottoms;
uint16_t k2 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)(xBottoms& 0xffu)) + yBottoms)& 0xffu)) + zBottoms;
uint16_t l2 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)(xBottoms& 0xffu)) + yBottoms + 1u )& 0xffu)) + zBottoms;
uint16_t k3 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)((xBottoms + 1u)& 0xffu)) + yBottoms )& 0xffu)) + zBottoms;
uint16_t l3 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)((xBottoms + 1u)& 0xffu)) + yBottoms + 1u) & 0xffu)) + zBottoms;
x1 = lerp(fadeX, grad(getValue(permutations,(uint8_t)(k2& 0xffu)), xCoord, yCoords, zCoord), grad(getValue(permutations,(uint8_t)(k3& 0xffu)), xCoord - 1.0, yCoords, zCoord));
x2 = lerp(fadeX, grad(getValue(permutations,(uint8_t)(l2& 0xffu)), xCoord, yCoords - 1.0, zCoord), grad(getValue(permutations,(uint8_t)(l3& 0xffu)), xCoord - 1.0, yCoords - 1.0, zCoord));
xx1 = lerp(fadeX, grad(getValue(permutations,(uint8_t)((k2+1u)& 0xffu)), xCoord, yCoords, zCoord - 1.0), grad(getValue(permutations,(uint8_t)((k3+1u)& 0xffu)), xCoord - 1.0, yCoords, zCoord - 1.0));
xx2 = lerp(fadeX, grad(getValue(permutations,(uint8_t)((l2+1u)& 0xffu)), xCoord, yCoords - 1.0, zCoord - 1.0), grad(getValue(permutations,(uint8_t)((l3+1u)& 0xffu)), xCoord - 1.0, yCoords - 1.0, zCoord - 1.0));
}
if (columnIndex%16 >= INNER_X_START && columnIndex%16 <= INNER_X_END &&
DIRT_HEIGHT_2D[columnIndex/16 - INNER_Z_START][columnIndex%16 - INNER_X_START] != 15){
double y1 = lerp(fadeY, x1, x2);
double y2 = lerp(fadeY, xx1, xx2);
(buffer)[columnIndex] = (buffer)[columnIndex] + lerp(fadeZ, y1, y2) * octaveWidth;
}
if (columnIndex == EARLY_RETURN) return;
columnIndex++;
}
}
}
}
__device__ static inline void generateNormalPermutations_2(double *buffer, double x, double y, double z, int sizeX, int sizeY, int sizeZ, double noiseFactorX, double noiseFactorY, double noiseFactorZ, double octaveSize, Random* random) {
double xo = lcg::next_double(*random) * 256.0;
double yo = lcg::next_double(*random) * 256.0;
double zo = lcg::next_double(*random) * 256.0;
//Setup the permutation fresh xD
#pragma unroll
for(int w = 0; w<256; w++) {
setValue(permutations, w, w);
}
for(int index = 0; index<256; index++) {
uint32_t randomIndex = lcg::dynamic_next_int(*random, 256ull - index) + index;
//if (randomIndex != index) {
// swap
uint8_t v1 = getValue(permutations,index);
uint8_t v2 = getValue(permutations,randomIndex);
setValue(permutations,index, v2);
setValue(permutations, randomIndex, v1);
//}
}
double octaveWidth = 1.0 / octaveSize;
int32_t i2 = -1;
double x1 = 0.0;
double x2 = 0.0;
double xx1 = 0.0;
double xx2 = 0.0;
double t;
double w;
int columnIndex = 0;
for (int X = 0; X < sizeX; X++) {
double xCoord = (x + (double) X) * noiseFactorX + xo;
auto clampedXcoord = (int32_t) xCoord;
if (xCoord < (double) clampedXcoord) {
clampedXcoord--;
}
auto xBottoms = (uint8_t) ((uint32_t) clampedXcoord & 0xffu);
xCoord -= clampedXcoord;
t = xCoord * 6 - 15;
w = (xCoord * t + 10);
double fadeX = xCoord * xCoord * xCoord * w;
for (int Z = 0; Z < sizeZ; Z++) {
double zCoord = zo;
auto clampedZCoord = (int32_t) zCoord;
if (zCoord < (double) clampedZCoord) {
clampedZCoord--;
}
auto zBottoms = (uint8_t) ((uint32_t) clampedZCoord & 0xffu);
zCoord -= clampedZCoord;
t = zCoord * 6 - 15;
w = (zCoord * t + 10);
double fadeZ = zCoord * zCoord * zCoord * w;
for (int Y = 0; Y < sizeY; Y++) {
double yCoords = (y + (double) Y) * noiseFactorY + yo;
auto clampedYCoords = (int32_t) yCoords;
if (yCoords < (double) clampedYCoords) {
clampedYCoords--;
}
auto yBottoms = (uint8_t) ((uint32_t) clampedYCoords & 0xffu);
yCoords -= clampedYCoords;
t = yCoords * 6 - 15;
w = yCoords * t + 10;
double fadeY = yCoords * yCoords * yCoords * w;
// ZCoord
if (Y == 0 || yBottoms != i2) { // this is wrong on so many levels, same ybottoms doesnt mean x and z were the same...
i2 = yBottoms;
uint16_t k2 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)(xBottoms& 0xffu)) + yBottoms)& 0xffu)) + zBottoms;
uint16_t l2 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)(xBottoms& 0xffu)) + yBottoms + 1u )& 0xffu)) + zBottoms;
uint16_t k3 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)((xBottoms + 1u)& 0xffu)) + yBottoms )& 0xffu)) + zBottoms;
uint16_t l3 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)((xBottoms + 1u)& 0xffu)) + yBottoms + 1u) & 0xffu)) + zBottoms;
x1 = lerp(fadeX, grad(getValue(permutations,(uint8_t)(k2& 0xffu)), xCoord, yCoords, zCoord), grad(getValue(permutations,(uint8_t)(k3& 0xffu)), xCoord - 1.0, yCoords, zCoord));
x2 = lerp(fadeX, grad(getValue(permutations,(uint8_t)(l2& 0xffu)), xCoord, yCoords - 1.0, zCoord), grad(getValue(permutations,(uint8_t)(l3& 0xffu)), xCoord - 1.0, yCoords - 1.0, zCoord));
xx1 = lerp(fadeX, grad(getValue(permutations,(uint8_t)((k2+1u)& 0xffu)), xCoord, yCoords, zCoord - 1.0), grad(getValue(permutations,(uint8_t)((k3+1u)& 0xffu)), xCoord - 1.0, yCoords, zCoord - 1.0));
xx2 = lerp(fadeX, grad(getValue(permutations,(uint8_t)((l2+1u)& 0xffu)), xCoord, yCoords - 1.0, zCoord - 1.0), grad(getValue(permutations,(uint8_t)((l3+1u)& 0xffu)), xCoord - 1.0, yCoords - 1.0, zCoord - 1.0));
}
if (columnIndex%16 >= INNER_X_START_2 && columnIndex%16 <= INNER_X_END_2 &&
DIRT_HEIGHT_2D_2[columnIndex/16 - INNER_Z_START_2][columnIndex%16 - INNER_X_START_2] != 15){
double y1 = lerp(fadeY, x1, x2);
double y2 = lerp(fadeY, xx1, xx2);
(buffer)[columnIndex] = (buffer)[columnIndex] + lerp(fadeZ, y1, y2) * octaveWidth;
}
columnIndex++;
}
}
}
}
__device__ static inline void generateNormalPermutations_3(double *buffer, double x, double y, double z, int sizeX, int sizeY, int sizeZ, double noiseFactorX, double noiseFactorY, double noiseFactorZ, double octaveSize, Random* random) {
double xo = lcg::next_double(*random) * 256.0;
double yo = lcg::next_double(*random) * 256.0;
double zo = lcg::next_double(*random) * 256.0;
//Setup the permutation fresh xD
#pragma unroll
for(int w = 0; w<256; w++) {
setValue(permutations, w, w);
}
for(int index = 0; index<256; index++) {
uint32_t randomIndex = lcg::dynamic_next_int(*random, 256ull - index) + index;
//if (randomIndex != index) {
// swap
uint8_t v1 = getValue(permutations,index);
uint8_t v2 = getValue(permutations,randomIndex);
setValue(permutations,index, v2);
setValue(permutations, randomIndex, v1);
//}
}
double octaveWidth = 1.0 / octaveSize;
int32_t i2 = -1;
double x1 = 0.0;
double x2 = 0.0;
double xx1 = 0.0;
double xx2 = 0.0;
double t;
double w;
int columnIndex = 0;
for (int X = 0; X < sizeX; X++) {
double xCoord = (x + (double) X) * noiseFactorX + xo;
auto clampedXcoord = (int32_t) xCoord;
if (xCoord < (double) clampedXcoord) {
clampedXcoord--;
}
auto xBottoms = (uint8_t) ((uint32_t) clampedXcoord & 0xffu);
xCoord -= clampedXcoord;
t = xCoord * 6 - 15;
w = (xCoord * t + 10);
double fadeX = xCoord * xCoord * xCoord * w;
for (int Z = 0; Z < sizeZ; Z++) {
double zCoord = zo;
auto clampedZCoord = (int32_t) zCoord;
if (zCoord < (double) clampedZCoord) {
clampedZCoord--;
}
auto zBottoms = (uint8_t) ((uint32_t) clampedZCoord & 0xffu);
zCoord -= clampedZCoord;
t = zCoord * 6 - 15;
w = (zCoord * t + 10);
double fadeZ = zCoord * zCoord * zCoord * w;
for (int Y = 0; Y < sizeY; Y++) {
double yCoords = (y + (double) Y) * noiseFactorY + yo;
auto clampedYCoords = (int32_t) yCoords;
if (yCoords < (double) clampedYCoords) {
clampedYCoords--;
}
auto yBottoms = (uint8_t) ((uint32_t) clampedYCoords & 0xffu);
yCoords -= clampedYCoords;
t = yCoords * 6 - 15;
w = yCoords * t + 10;
double fadeY = yCoords * yCoords * yCoords * w;
// ZCoord
if (Y == 0 || yBottoms != i2) { // this is wrong on so many levels, same ybottoms doesnt mean x and z were the same...
i2 = yBottoms;
uint16_t k2 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)(xBottoms& 0xffu)) + yBottoms)& 0xffu)) + zBottoms;
uint16_t l2 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)(xBottoms& 0xffu)) + yBottoms + 1u )& 0xffu)) + zBottoms;
uint16_t k3 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)((xBottoms + 1u)& 0xffu)) + yBottoms )& 0xffu)) + zBottoms;
uint16_t l3 = getValue(permutations,(uint8_t)((uint16_t)(getValue(permutations,(uint8_t)((xBottoms + 1u)& 0xffu)) + yBottoms + 1u) & 0xffu)) + zBottoms;
x1 = lerp(fadeX, grad(getValue(permutations,(uint8_t)(k2& 0xffu)), xCoord, yCoords, zCoord), grad(getValue(permutations,(uint8_t)(k3& 0xffu)), xCoord - 1.0, yCoords, zCoord));
x2 = lerp(fadeX, grad(getValue(permutations,(uint8_t)(l2& 0xffu)), xCoord, yCoords - 1.0, zCoord), grad(getValue(permutations,(uint8_t)(l3& 0xffu)), xCoord - 1.0, yCoords - 1.0, zCoord));
xx1 = lerp(fadeX, grad(getValue(permutations,(uint8_t)((k2+1u)& 0xffu)), xCoord, yCoords, zCoord - 1.0), grad(getValue(permutations,(uint8_t)((k3+1u)& 0xffu)), xCoord - 1.0, yCoords, zCoord - 1.0));
xx2 = lerp(fadeX, grad(getValue(permutations,(uint8_t)((l2+1u)& 0xffu)), xCoord, yCoords - 1.0, zCoord - 1.0), grad(getValue(permutations,(uint8_t)((l3+1u)& 0xffu)), xCoord - 1.0, yCoords - 1.0, zCoord - 1.0));
}
if (columnIndex%16 >= INNER_X_START_3 && columnIndex%16 <= INNER_X_END_3 &&
DIRT_HEIGHT_2D_3[columnIndex/16 - INNER_Z_START_3][columnIndex%16 - INNER_X_START_3] != 15){
double y1 = lerp(fadeY, x1, x2);
double y2 = lerp(fadeY, xx1, xx2);
(buffer)[columnIndex] = (buffer)[columnIndex] + lerp(fadeZ, y1, y2) * octaveWidth;
}
columnIndex++;
}
}
}
}
__device__ static inline void generateNoise(double *buffer, double chunkX, double chunkY, double chunkZ, int sizeX, int sizeY, int sizeZ, double offsetX, double offsetY, double offsetZ, Random random, int nbOctaves) {
//memset(buffer, 0, sizeof(double) * sizeX * sizeZ * sizeY);
double octavesFactor = 1.0;
for (int octave = 0; octave < nbOctaves; octave++) {
generateNormalPermutations(buffer, chunkX, chunkY, chunkZ, sizeX, sizeY, sizeZ, offsetX * octavesFactor, offsetY * octavesFactor, offsetZ * octavesFactor, octavesFactor, &random);
octavesFactor /= 2.0;
}
}
__device__ static inline void generateNoise_2(double *buffer, double chunkX, double chunkY, double chunkZ, int sizeX, int sizeY, int sizeZ, double offsetX, double offsetY, double offsetZ, Random random, int nbOctaves) {
//memset(buffer, 0, sizeof(double) * sizeX * sizeZ * sizeY);
double octavesFactor = 1.0;
for (int octave = 0; octave < nbOctaves; octave++) {
generateNormalPermutations_2(buffer, chunkX, chunkY, chunkZ, sizeX, sizeY, sizeZ, offsetX * octavesFactor, offsetY * octavesFactor, offsetZ * octavesFactor, octavesFactor, &random);
octavesFactor /= 2.0;
}
}
__device__ static inline void generateNoise_3(double *buffer, double chunkX, double chunkY, double chunkZ, int sizeX, int sizeY, int sizeZ, double offsetX, double offsetY, double offsetZ, Random random, int nbOctaves) {
//memset(buffer, 0, sizeof(double) * sizeX * sizeZ * sizeY);
double octavesFactor = 1.0;
for (int octave = 0; octave < nbOctaves; octave++) {
generateNormalPermutations_3(buffer, chunkX, chunkY, chunkZ, sizeX, sizeY, sizeZ, offsetX * octavesFactor, offsetY * octavesFactor, offsetZ * octavesFactor, octavesFactor, &random);
octavesFactor /= 2.0;
}
}
}
using namespace noise;
__device__ static inline bool match(uint64_t seed) {
seed = get_random(seed);
//SkipNoiseGen(16+16+8, &seed);
lcg::advance<10480>(seed);//VERY VERY DODGY
double heightField[EARLY_RETURN+1];
#pragma unroll
for(uint16_t i = 0; i<EARLY_RETURN+1;i++)
heightField[i] = 0;
const double noiseFactor = 0.03125;
generateNoise(heightField, (double) (CHUNK_X <<4), (double) (CHUNK_Z<<4), 0.0, 16, 16, 1, noiseFactor, noiseFactor, 1.0, seed, 4);
for(uint8_t z = 0; z < INNER_Z_END - INNER_Z_START + 1; z++) {
for(uint8_t x = 0; x < INNER_X_END - INNER_X_START + 1; x++) {
if (DIRT_HEIGHT_2D[z][x] != 15) {
uint8_t dirty = heightField[INNER_X_START + x + (INNER_Z_START + z) * 16] + LocalNoise2D[z][x] * 0.2 > 0.0 ? 0 : 1;
if (dirty!=(int8_t)DIRT_HEIGHT_2D[z][x])
return false;
}
}
}
return true;
}
__device__ static inline bool match2(uint64_t seed) {
seed = get_random(seed);
//SkipNoiseGen(16+16+8, &seed);
lcg::advance<10480>(seed);//VERY VERY DODGY
double heightField[256];
#pragma unroll
for(uint16_t i = 0; i<256;i++)
heightField[i] = 0;
const double noiseFactor = 0.03125;
generateNoise_2(heightField, (double) (CHUNK_X_2 <<4), (double) (CHUNK_Z_2<<4), 0.0, 16, 16, 1, noiseFactor, noiseFactor, 1.0, seed, 4);
for(uint8_t z = 0; z < INNER_Z_END_2 - INNER_Z_START_2 + 1; z++) {
for(uint8_t x = 0; x < INNER_X_END_2 - INNER_X_START_2 + 1; x++) {
if (DIRT_HEIGHT_2D_2[z][x] != 15) {
uint8_t dirty = heightField[INNER_X_START_2 + x + (INNER_Z_START_2 + z) * 16] + LocalNoise2D_2[z][x] * 0.2 > 0.0 ? 0 : 1;
if (dirty!=(int8_t)DIRT_HEIGHT_2D_2[z][x])
return false;
}
}
}
return true;
}
__device__ static inline bool match3(uint64_t seed) {
seed = get_random(seed);
//SkipNoiseGen(16+16+8, &seed);
lcg::advance<10480>(seed);//VERY VERY DODGY
double heightField[256];
#pragma unroll
for(uint16_t i = 0; i<256;i++)
heightField[i] = 0;
const double noiseFactor = 0.03125;
generateNoise_3(heightField, (double) (CHUNK_X_3 <<4), (double) (CHUNK_Z_3<<4), 0.0, 16, 16, 1, noiseFactor, noiseFactor, 1.0, seed, 4);
for(uint8_t z = 0; z < INNER_Z_END_3 - INNER_Z_START_3 + 1; z++) {
for(uint8_t x = 0; x < INNER_X_END_3 - INNER_X_START_3 + 1; x++) {
if (DIRT_HEIGHT_2D_3[z][x] != 15) {
uint8_t dirty = heightField[INNER_X_START_3 + x + (INNER_Z_START_3 + z) * 16] + LocalNoise2D_3[z][x] * 0.2 > 0.0 ? 0 : 1;
if (dirty!=(int8_t)DIRT_HEIGHT_2D_3[z][x])
return false;
}
}
}
return true;
}
__global__ __launch_bounds__(BLOCK_SIZE,2) static void tempCheck(uint64_t offset, uint64_t* buffer, uint32_t* counter) {
uint64_t seed = blockIdx.x * blockDim.x + threadIdx.x + offset;
if (match(seed)) {
buffer[atomicAdd(counter,1)] = seed;
}
}
__global__ __launch_bounds__(BLOCK_SIZE,2) static void tempCheck2(uint32_t count, uint64_t* buffer) {
uint64_t seedIndex = blockIdx.x * blockDim.x + threadIdx.x;
if (seedIndex>=count)
return;
if (!match2(buffer[seedIndex])) {
buffer[seedIndex] = 0;
}
}
__global__ __launch_bounds__(BLOCK_SIZE,2) static void tempCheck3(uint32_t count, uint64_t* buffer) {
uint64_t seedIndex = blockIdx.x * blockDim.x + threadIdx.x;
if (seedIndex>=count)
return;
uint64_t seed = buffer[seedIndex];
if (seed==0)
return;
if (!match3(seed)) {
buffer[seedIndex] = 0;
}
}
std::ifstream inSeeds;
std::ofstream outSeeds;
uint64_t* buffer;
uint32_t* counter;
double getNextDoubleForLocNoise(int x, int z);
void setup(int gpu_device) {
cudaSetDevice(gpu_device);
GPU_ASSERT(cudaPeekAtLastError());
GPU_ASSERT(cudaDeviceSynchronize());
double locNoise2D[INNER_Z_END - INNER_Z_START + 1][INNER_X_END - INNER_X_START + 1];
for(uint8_t z = 0; z < INNER_Z_END - INNER_Z_START + 1; z++) {
for (uint8_t x = 0; x < INNER_X_END - INNER_X_START + 1; x++) {
locNoise2D[z][x] = getNextDoubleForLocNoise((CHUNK_X<<4) + INNER_X_START + x, (CHUNK_Z<<4) + INNER_Z_START + z);
}
}
GPU_ASSERT(cudaMemcpyToSymbol(LocalNoise2D, &locNoise2D, sizeof(locNoise2D)));
GPU_ASSERT(cudaPeekAtLastError());
double locNoise2D_2[INNER_Z_END_2 - INNER_Z_START_2 + 1][INNER_X_END_2 - INNER_X_START_2 + 1];
for(uint8_t z = 0; z < INNER_Z_END_2 - INNER_Z_START_2 + 1; z++) {
for (uint8_t x = 0; x < INNER_X_END_2 - INNER_X_START_2 + 1; x++) {
locNoise2D_2[z][x] = getNextDoubleForLocNoise((CHUNK_X_2<<4) + INNER_X_START_2 + x, (CHUNK_Z_2<<4) + INNER_Z_START_2 + z);
}
}
GPU_ASSERT(cudaMemcpyToSymbol(LocalNoise2D_2, &locNoise2D_2, sizeof(locNoise2D_2)));
GPU_ASSERT(cudaPeekAtLastError());
double locNoise2D_3[INNER_Z_END_3 - INNER_Z_START_3 + 1][INNER_X_END_3 - INNER_X_START_3 + 1];
for(uint8_t z = 0; z < INNER_Z_END_3 - INNER_Z_START_3 + 1; z++) {
for (uint8_t x = 0; x < INNER_X_END_3 - INNER_X_START_3 + 1; x++) {
locNoise2D_3[z][x] = getNextDoubleForLocNoise((CHUNK_X_3<<4) + INNER_X_START_3 + x, (CHUNK_Z_3<<4) + INNER_Z_START_3 + z);
}
}
GPU_ASSERT(cudaMemcpyToSymbol(LocalNoise2D_3, &locNoise2D_3, sizeof(locNoise2D_3)));
GPU_ASSERT(cudaPeekAtLastError());
}
time_t elapsed_chkpoint = 0;
struct checkpoint_vars {
unsigned long long offset;
time_t elapsed_chkpoint;
};
int main(int argc, char *argv[]) {
int gpu_device = 0;
uint64_t START;
uint64_t offsetStart = 0;
uint64_t COUNT;
#ifdef BOINC
BOINC_OPTIONS options;
boinc_options_defaults(options);
options.normal_thread_priority = true;
boinc_init_options(&options);
#endif
for (int i = 1; i < argc; i += 2) {
const char *param = argv[i];
if (strcmp(param, "-d") == 0 || strcmp(param, "--device") == 0) {
gpu_device = atoi(argv[i + 1]);
} else if (strcmp(param, "-s") == 0 || strcmp(param, "--start") == 0) {
sscanf(argv[i + 1], "%llu", &START);
} else if (strcmp(param, "-e") == 0 || strcmp(param, "--count") == 0) {
sscanf(argv[i + 1], "%llu", &COUNT);
} else {
fprintf(stderr,"Unknown parameter: %s\n", param);
}
}
FILE *checkpoint_data = boinc_fopen("packpoint.txt", "rb");
if(!checkpoint_data){
fprintf(stderr, "No checkpoint to load\n");
}
else{
#ifdef BOINC
boinc_begin_critical_section();
#endif
struct checkpoint_vars data_store;
fread(&data_store, sizeof(data_store), 1, checkpoint_data);
offsetStart = data_store.offset;
elapsed_chkpoint = data_store.elapsed_chkpoint;
fprintf(stderr, "Checkpoint loaded, task time %d s, seed pos: %llu\n", elapsed_chkpoint, START);
fclose(checkpoint_data);
#ifdef BOINC
boinc_end_critical_section();
#endif
}
#ifdef BOINC
APP_INIT_DATA aid;
boinc_get_init_data(aid);
if (aid.gpu_device_num >= 0) {
gpu_device = aid.gpu_device_num;
fprintf(stderr,"boinc gpu %i gpuindex: %i \n", aid.gpu_device_num, gpu_device);
} else {
fprintf(stderr,"stndalone gpuindex %i \n", gpu_device);
}
#endif
setup(gpu_device);
uint64_t seedCount = COUNT;
std::cout << "Processing " << seedCount << " seeds" << std::endl;
outSeeds.open("seedsout");
GPU_ASSERT(cudaMallocManaged(&buffer, sizeof(*buffer) * SEEDS_PER_CALL));
GPU_ASSERT(cudaPeekAtLastError());
GPU_ASSERT(cudaMallocManaged(&counter, sizeof(*counter)));
GPU_ASSERT(cudaPeekAtLastError());
time_t start_time = time(NULL);
int outCount = 0;
int checkpointTemp = 0;
for(uint64_t offset =offsetStart;offset<seedCount;offset+=SEEDS_PER_CALL) {
// Normal filtering
time_t elapsed = time(NULL) - start_time;
double frac = (double) offset / (double)(seedCount);
#ifdef BOINC
boinc_fraction_done(frac);
#endif
*counter = 0;
tempCheck<<<1ULL<<WORK_SIZE_BITS,BLOCK_SIZE>>>(START + offset, buffer,counter);
GPU_ASSERT(cudaPeekAtLastError());
GPU_ASSERT(cudaDeviceSynchronize());
tempCheck2<<<((*counter)/BLOCK_SIZE)+1,BLOCK_SIZE>>>(*counter, buffer);
GPU_ASSERT(cudaPeekAtLastError());
GPU_ASSERT(cudaDeviceSynchronize());
tempCheck3<<<((*counter)/BLOCK_SIZE)+1,BLOCK_SIZE>>>(*counter, buffer);
GPU_ASSERT(cudaPeekAtLastError());
GPU_ASSERT(cudaDeviceSynchronize());
for(int i=0;i<*counter;i++) {
if (buffer[i]!=0) {
uint64_t seed = buffer[i];
std::cout << "3rd level seed found: " << seed << std::endl;
outSeeds << seed << std::endl;
outCount++;
}
}
if(checkpointTemp >= 180000000 || boinc_time_to_checkpoint()){
#ifdef BOINC
boinc_begin_critical_section(); // Boinc should not interrupt this
#endif
// Checkpointing section below
boinc_delete_file("packpoint.txt"); // Don't touch, same func as normal fdel
FILE *checkpoint_data = boinc_fopen("packpoint.txt", "wb");
struct checkpoint_vars data_store;
data_store.offset = offset;
data_store.elapsed_chkpoint = elapsed_chkpoint + elapsed;
fwrite(&data_store, sizeof(data_store), 1, checkpoint_data);
fclose(checkpoint_data);
checkpointTemp = 0;
#ifdef BOINC
boinc_end_critical_section();
boinc_checkpoint_completed(); // Checkpointing completed
#endif
}
checkpointTemp += SEEDS_PER_CALL;
std::cout << "Seeds left:" << (((int64_t)seedCount-offset)-SEEDS_PER_CALL) << std::endl;
}
std::cout << "Done processing" << std::endl;
#ifdef BOINC
boinc_begin_critical_section();
#endif
time_t elapsed = time(NULL) - start_time;
double done = (double)COUNT / 1000000.0;
double speed = done / (double) elapsed;
fprintf(stderr, "\nSpeed: %.2lfm/s\n", speed );
fprintf(stderr, "Done\n");
fprintf(stderr, "Processed: %llu seeds in %.2lfs seconds\n", COUNT, (double) elapsed_chkpoint + (double) elapsed );
fprintf(stderr, "Have %llu output seeds.\n", outCount);
fflush(stderr);
outSeeds.close();
boinc_delete_file("packpoint.txt");
#ifdef BOINC
boinc_end_critical_section();
#endif
boinc_finish(0);
}
double getNextDoubleForLocNoise(int x, int z) {
Random rand = get_random((((int64_t)x) >> 4) * 341873128712LL + (((int64_t)z) >> 4) * 132897987541LL);
for (int dx = 0; dx < 16; dx++) {
for (int dz = 0; dz < 16; dz++) {
if (dx == (x & 15) && dz == (z & 15)) {
//advance2(&rand);
//advance2(&rand);
return next_double(&rand);
}
advance2(&rand);
advance2(&rand);
advance2(&rand);
for(int k1 = 127; k1 >= 0; k1--) {
random_next_int_nonpow(&rand,5);
}
//for (int i = 0; i < 67; i++) {
// advance2(&rand);
//}
}
}
exit(-99);
}