forked from bartvdbraak/blender
60 lines
2.4 KiB
C
60 lines
2.4 KiB
C
/*
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* Copyright 2011-2015 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 "../kernel_compat_opencl.h"
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#include "../kernel_math.h"
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#include "../kernel_types.h"
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#include "../kernel_globals.h"
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/* Since we process various samples in parallel; The output radiance of different samples
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* are stored in different locations; This kernel combines the output radiance contributed
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* by all different samples and stores them in the RenderTile's output buffer.
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*/
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ccl_device void kernel_sum_all_radiance(
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ccl_constant KernelData *data, /* To get pass_stride to offet into buffer */
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ccl_global float *buffer, /* Output buffer of RenderTile */
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ccl_global float *per_sample_output_buffer, /* Radiance contributed by all samples */
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int parallel_samples, int sw, int sh, int stride,
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int buffer_offset_x,
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int buffer_offset_y,
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int buffer_stride,
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int start_sample)
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{
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int x = get_global_id(0);
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int y = get_global_id(1);
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if(x < sw && y < sh) {
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buffer += ((buffer_offset_x + x) + (buffer_offset_y + y) * buffer_stride) * (data->film.pass_stride);
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per_sample_output_buffer += ((x + y * stride) * parallel_samples) * (data->film.pass_stride);
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int sample_stride = (data->film.pass_stride);
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int sample_iterator = 0;
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int pass_stride_iterator = 0;
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int num_floats = data->film.pass_stride;
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for(sample_iterator = 0; sample_iterator < parallel_samples; sample_iterator++) {
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for(pass_stride_iterator = 0; pass_stride_iterator < num_floats; pass_stride_iterator++) {
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*(buffer + pass_stride_iterator) =
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(start_sample == 0 && sample_iterator == 0)
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? *(per_sample_output_buffer + pass_stride_iterator)
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: *(buffer + pass_stride_iterator) + *(per_sample_output_buffer + pass_stride_iterator);
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}
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per_sample_output_buffer += sample_stride;
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}
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}
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}
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