cuda-samples/Samples/randomFog/rng.h
2021-10-21 16:34:49 +05:30

73 lines
2.7 KiB
C++

/* Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
*
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#include <curand.h>
#include <string>
// RNGs
class RNG
{
public:
enum RngType {Pseudo, Quasi, ScrambledQuasi};
RNG(unsigned long prngSeed, unsigned int qrngDimensions, unsigned int nSamples);
virtual ~RNG();
float getNextU01(void);
void getInfoString(std::string &msg);
void selectRng(RngType type);
void resetSeed(void);
void resetDimensions(void);
void incrementDimensions(void);
private:
// Generators
curandGenerator_t *m_pCurrent;
curandGenerator_t m_prng;
curandGenerator_t m_qrng;
curandGenerator_t m_sqrng;
// Parameters
unsigned long m_prngSeed;
unsigned int m_qrngDimensions;
// Batches
const unsigned int m_nSamplesBatchTarget;
unsigned int m_nSamplesBatchActual;
unsigned int m_nSamplesRemaining;
void generateBatch(void);
// Helpers
void updateDimensions(void);
void setBatchSize(void);
// Buffers
float *m_h_samples;
float *m_d_samples;
static const unsigned int s_maxQrngDimensions;
};