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/*
* Copyright 2019 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
CCL_NAMESPACE_BEGIN
ccl_device void kernel_adaptive_adjust_samples(KernelGlobals *kg)
{
int pixel_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
if (pixel_index < kernel_split_params.tile.w * kernel_split_params.tile.h) {
int x = kernel_split_params.tile.x + pixel_index % kernel_split_params.tile.w;
int y = kernel_split_params.tile.y + pixel_index / kernel_split_params.tile.w;
int buffer_offset = (kernel_split_params.tile.offset + x +
y * kernel_split_params.tile.stride) *
kernel_data.film.pass_stride;
ccl_global float *buffer = kernel_split_params.tile.buffer + buffer_offset;
int sample = kernel_split_params.tile.start_sample + kernel_split_params.tile.num_samples;
if (buffer[kernel_data.film.pass_sample_count] < 0.0f) {
buffer[kernel_data.film.pass_sample_count] = -buffer[kernel_data.film.pass_sample_count];
float sample_multiplier = sample / buffer[kernel_data.film.pass_sample_count];
if (sample_multiplier != 1.0f) {
kernel_adaptive_post_adjust(kg, buffer, sample_multiplier);
}
}
else {
kernel_adaptive_post_adjust(kg, buffer, sample / (sample - 1.0f));
}
}
}
CCL_NAMESPACE_END
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