9cfc7967dd
* Replace license text in headers with SPDX identifiers. * Remove specific license info from outdated readme.txt, instead leave details to the source files. * Add list of SPDX license identifiers used, and corresponding license texts. * Update copyright dates while we're at it. Ref D14069, T95597
43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
/* SPDX-License-Identifier: Apache-2.0
|
|
* Copyright 2011-2022 Blender Foundation */
|
|
|
|
#pragma once
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
class AdaptiveSampling {
|
|
public:
|
|
AdaptiveSampling();
|
|
|
|
/* Align number of samples so that they align with the adaptive filtering.
|
|
*
|
|
* Returns the new value for the `num_samples` so that after rendering so many samples on top
|
|
* of `start_sample` filtering is required.
|
|
*
|
|
* The alignment happens in a way that allows to render as many samples as possible without
|
|
* missing any filtering point. This means that the result is "clamped" by the nearest sample
|
|
* at which filtering is needed. This is part of mechanism which ensures that all devices will
|
|
* perform same exact filtering and adaptive sampling, regardless of their performance.
|
|
*
|
|
* `start_sample` is the 0-based index of sample.
|
|
*
|
|
* NOTE: The start sample is included into the number of samples to render. This means that
|
|
* if the number of samples is 1, then the path tracer will render samples [align_samples],
|
|
* if the number of samples is 2, then the path tracer will render samples [align_samples,
|
|
* align_samples + 1] and so on. */
|
|
int align_samples(int start_sample, int num_samples) const;
|
|
|
|
/* Check whether adaptive sampling filter should happen at this sample.
|
|
* Returns false if the adaptive sampling is not use.
|
|
*
|
|
* `sample` is the 0-based index of sample. */
|
|
bool need_filter(int sample) const;
|
|
|
|
bool use = false;
|
|
int adaptive_step = 0;
|
|
int min_samples = 0;
|
|
float threshold = 0.0f;
|
|
};
|
|
|
|
CCL_NAMESPACE_END
|