45 lines
1.9 KiB
C
45 lines
1.9 KiB
C
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/*
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* Copyright 2019 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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CCL_NAMESPACE_BEGIN
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ccl_device void kernel_adaptive_adjust_samples(KernelGlobals *kg)
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{
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int pixel_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
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if (pixel_index < kernel_split_params.tile.w * kernel_split_params.tile.h) {
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int x = kernel_split_params.tile.x + pixel_index % kernel_split_params.tile.w;
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int y = kernel_split_params.tile.y + pixel_index / kernel_split_params.tile.w;
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int buffer_offset = (kernel_split_params.tile.offset + x +
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y * kernel_split_params.tile.stride) *
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kernel_data.film.pass_stride;
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ccl_global float *buffer = kernel_split_params.tile.buffer + buffer_offset;
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int sample = kernel_split_params.tile.start_sample + kernel_split_params.tile.num_samples;
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if (buffer[kernel_data.film.pass_sample_count] < 0.0f) {
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buffer[kernel_data.film.pass_sample_count] = -buffer[kernel_data.film.pass_sample_count];
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float sample_multiplier = sample / max((float)kernel_split_params.tile.start_sample + 1.0f,
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buffer[kernel_data.film.pass_sample_count]);
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if (sample_multiplier != 1.0f) {
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kernel_adaptive_post_adjust(kg, buffer, sample_multiplier);
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}
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}
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else {
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kernel_adaptive_post_adjust(kg, buffer, sample / (sample - 1.0f));
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}
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}
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}
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CCL_NAMESPACE_END
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