Brecht Van Lommel
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 * Remove specific license info from outdated readme.txt, instead leave details to the source files.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
104 lines
3.8 KiB
C++
104 lines
3.8 KiB
C++
/* SPDX-License-Identifier: Apache-2.0
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* Copyright 2011-2022 Blender Foundation */
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#include "testing/testing.h"
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#include "integrator/adaptive_sampling.h"
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#include "util/vector.h"
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CCL_NAMESPACE_BEGIN
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TEST(AdaptiveSampling, schedule_samples)
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{
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AdaptiveSampling adaptive_sampling;
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adaptive_sampling.use = true;
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adaptive_sampling.min_samples = 0;
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adaptive_sampling.adaptive_step = 4;
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for (int sample = 2; sample < 32; ++sample) {
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for (int num_samples = 8; num_samples < 32; ++num_samples) {
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const int num_samples_aligned = adaptive_sampling.align_samples(sample, num_samples);
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/* NOTE: `sample + num_samples_aligned` is the number of samples after rendering, so need
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* to convert this to the 0-based index of the last sample. */
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EXPECT_TRUE(adaptive_sampling.need_filter(sample + num_samples_aligned - 1));
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}
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}
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}
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TEST(AdaptiveSampling, align_samples)
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{
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AdaptiveSampling adaptive_sampling;
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adaptive_sampling.use = true;
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adaptive_sampling.min_samples = 11 /* rounded of sqrt(128) */;
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adaptive_sampling.adaptive_step = 4;
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/* Filtering will happen at the following samples:
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* 15, 19, 23, 27, 31, 35, 39, 43 */
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/* Requested sample and number of samples will result in number of samples lower than
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* `min_samples`. */
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EXPECT_EQ(adaptive_sampling.align_samples(0, 4), 4);
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EXPECT_EQ(adaptive_sampling.align_samples(0, 7), 7);
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/* Request number of samples higher than the minimum samples before filter, but prior to the
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* first sample at which filtering will happen. */
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EXPECT_EQ(adaptive_sampling.align_samples(0, 15), 15);
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/* When rendering many samples from the very beginning, limit number of samples by the first
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* sample at which filtering is to happen. */
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EXPECT_EQ(adaptive_sampling.align_samples(0, 16), 16);
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EXPECT_EQ(adaptive_sampling.align_samples(0, 17), 16);
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EXPECT_EQ(adaptive_sampling.align_samples(0, 20), 16);
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EXPECT_EQ(adaptive_sampling.align_samples(0, 60), 16);
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/* Similar to above, but start sample is not 0. */
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EXPECT_EQ(adaptive_sampling.align_samples(9, 8), 7);
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EXPECT_EQ(adaptive_sampling.align_samples(9, 20), 7);
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EXPECT_EQ(adaptive_sampling.align_samples(9, 60), 7);
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/* Start sample is past the minimum required samples, but prior to the first filter sample. */
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EXPECT_EQ(adaptive_sampling.align_samples(12, 6), 4);
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EXPECT_EQ(adaptive_sampling.align_samples(12, 20), 4);
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EXPECT_EQ(adaptive_sampling.align_samples(12, 60), 4);
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/* Start sample is the sample which is to be filtered. */
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EXPECT_EQ(adaptive_sampling.align_samples(15, 4), 1);
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EXPECT_EQ(adaptive_sampling.align_samples(15, 6), 1);
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EXPECT_EQ(adaptive_sampling.align_samples(15, 10), 1);
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EXPECT_EQ(adaptive_sampling.align_samples(58, 2), 2);
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/* Start sample is past the sample which is to be filtered. */
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EXPECT_EQ(adaptive_sampling.align_samples(16, 3), 3);
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EXPECT_EQ(adaptive_sampling.align_samples(16, 4), 4);
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EXPECT_EQ(adaptive_sampling.align_samples(16, 5), 4);
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EXPECT_EQ(adaptive_sampling.align_samples(16, 10), 4);
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/* Should never exceed requested number of samples. */
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EXPECT_EQ(adaptive_sampling.align_samples(15, 2), 1);
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EXPECT_EQ(adaptive_sampling.align_samples(16, 2), 2);
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EXPECT_EQ(adaptive_sampling.align_samples(17, 2), 2);
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EXPECT_EQ(adaptive_sampling.align_samples(18, 2), 2);
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}
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TEST(AdaptiveSampling, need_filter)
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{
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AdaptiveSampling adaptive_sampling;
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adaptive_sampling.use = true;
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adaptive_sampling.min_samples = 11 /* rounded of sqrt(128) */;
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adaptive_sampling.adaptive_step = 4;
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const vector<int> expected_samples_to_filter = {
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{15, 19, 23, 27, 31, 35, 39, 43, 47, 51, 55, 59}};
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vector<int> actual_samples_to_filter;
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for (int sample = 0; sample < 60; ++sample) {
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if (adaptive_sampling.need_filter(sample)) {
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actual_samples_to_filter.push_back(sample);
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}
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}
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EXPECT_EQ(actual_samples_to_filter, expected_samples_to_filter);
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}
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CCL_NAMESPACE_END
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