forked from bartvdbraak/blender
fd25e883e2
Remove prefix of filenames that is the same as the folder name. This used to help when #includes were using individual files, but now they are always relative to the cycles root directory and so the prefixes are redundant. For patches and branches, git merge and rebase should be able to detect the renames and move over code to the right file.
72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
/*
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* Copyright 2011-2021 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "integrator/adaptive_sampling.h"
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#include "util/math.h"
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CCL_NAMESPACE_BEGIN
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AdaptiveSampling::AdaptiveSampling()
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{
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}
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int AdaptiveSampling::align_samples(int start_sample, int num_samples) const
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{
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if (!use) {
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return num_samples;
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}
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/*
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* The naive implementation goes as following:
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*
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* int count = 1;
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* while (!need_filter(start_sample + count - 1) && count < num_samples) {
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* ++count;
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* }
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* return count;
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*/
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/* 0-based sample index at which first filtering will happen. */
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const int first_filter_sample = (min_samples + 1) | (adaptive_step - 1);
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/* Allow as many samples as possible until the first filter sample. */
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if (start_sample + num_samples <= first_filter_sample) {
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return num_samples;
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}
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const int next_filter_sample = max(first_filter_sample, start_sample | (adaptive_step - 1));
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const int num_samples_until_filter = next_filter_sample - start_sample + 1;
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return min(num_samples_until_filter, num_samples);
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}
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bool AdaptiveSampling::need_filter(int sample) const
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{
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if (!use) {
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return false;
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}
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if (sample <= min_samples) {
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return false;
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}
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return (sample & (adaptive_step - 1)) == (adaptive_step - 1);
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}
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CCL_NAMESPACE_END
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