- Generated by
1.11.0
|
Photon Engine 2.0.0-beta
A physically based renderer.
|
Common parameters of intersector. More...
#include <IntersectorCommonParams.h>
Public Attributes | |
| std::size_t | numPhotons = 200000 |
| std::size_t | numPasses = 1 |
| std::size_t | numSamplesPerPixel = 4 |
| real | kernelRadius = 0.1_r |
| uint32 | minPhotonPathLength = 1 |
| uint32 | maxPhotonPathLength = DEFAULT_MAX_PATH_LENGTH |
| real | alpha = 2.0_r / 3.0_r |
| uint32 | glossyMergeBeginLength = 1 |
| uint32 | stochasticViewSampleBeginLength = 3 |
Common parameters of intersector.
| real ph::IntersectorCommonParams::alpha = 2.0_r / 3.0_r |
Controls the kernel radius reduction rate for progressive techniques. Smaller value has higher radius reduction rate (higher variance/noise, smaller expected error/bias), larger value has lower radius reduction rate (lower variance/noise, higher expected error/bias). Alpha effectively determines a trade-off between noise and bias. The value should be within (0, 1).
| uint32 ph::IntersectorCommonParams::glossyMergeBeginLength = 1 |
Hint for the minimum path length to start estimating energy using photons on glossy surface. If the scene contains diffuse surface and is easily reachable by photons, it is recommended to set this to a lower value.
| real ph::IntersectorCommonParams::kernelRadius = 0.1_r |
Energy contribution radius for each photon. For progressive techniques, this value is for setting up the initial radius.
| uint32 ph::IntersectorCommonParams::maxPhotonPathLength = DEFAULT_MAX_PATH_LENGTH |
Maximum path length for a photon. The default value is effectively infinite bounces. Combined with minPhotonPathLength, these parameters are useful if only some number of bounces are estimated via photons.
| uint32 ph::IntersectorCommonParams::minPhotonPathLength = 1 |
Minimum path length for a photon. Photon with 0 path length is not supported, as it is like approximating emissive surface with photons and the result is overly blurry for no good reason. 0-bounce lighting is done via traditional path sampling.
| std::size_t ph::IntersectorCommonParams::numPasses = 1 |
Number of passes performed by progressive techniques.
| std::size_t ph::IntersectorCommonParams::numPhotons = 200000 |
Number of photons used. For progressive techniques, this value is for a single pass.
| std::size_t ph::IntersectorCommonParams::numSamplesPerPixel = 4 |
Number of samples per pixel. Higher values can resolve image aliasing, but can consume large amounts of memory for some algorithms. This value can also mean the number of statistics gathered in a single pixel for some techniques. If the value is not a power-of-2 number, it may be adjusted.
| uint32 ph::IntersectorCommonParams::stochasticViewSampleBeginLength = 3 |
Hint for the view path length to start random path sampling. If this value differ too much from the mean specular path length from the scene, the energy estimation result may contain higher variance or bias. Beware when using higher values as non-stochastic path may be branched, which can result in exponential growth of number of rays.
1.11.0