Sampler class
#include <darts/sampler.h>

Abstract sample generator.

A sample generator is responsible for generating the random number stream that will be passed to an #Integrator implementation as it computes the radiance incident along a specified ray.

Derived classes

class Independent
Independent sampling - returns independent uniformly distributed random numbers on $[0, 1)^2$ .

Public functions

auto clone() const -> std::unique_ptr<Sampler> pure virtual
Create an exact copy of this Sampler instance.
void seed(int seedx, int seedy) virtual
Deterministically seed the underlying RNG (to produce identical results between runs)
void start_pixel(int x, int y) pure virtual
Prepare to generate samples for pixel (x,y).
void advance() virtual
Advance to the next sample.
auto next1f() -> float pure virtual
Retrieve the next float value (dimension) from the current sample.
auto next2f() -> Vec2f pure virtual
Retrieve the next two float values (dimensions) from the current sample.
auto sample_count() const -> uint32_t virtual
Return the number of configured pixel samples.

Function documentation

void Sampler::start_pixel(int x, int y) pure virtual

Prepare to generate samples for pixel (x,y).

This function is called every time the integrator starts rendering a new pixel.