84ad20acef
This commit re-shuffles code in split kernel once again and makes it so common parts which is in the headers is only responsible to making all the work needed for specified ray index. Getting ray index, checking for it's validity and enqueuing tasks are now happening in the device specified part of the kernel. This actually makes sense because enqueuing is indeed device-specified and i.e. with CUDA we'll want to enqueue kernels from kernel and avoid CPU roundtrip. TODO: - Kernel comments are still placed in the common header files, but since queue related stuff is not passed to those functions those comments might need to be split as well. Just currently read them considering that they're also covering the way how all devices are invoking the common code path. - Arguments might need to be wrapped into KernelGlobals, so we don't ened to pass all them around as function arguments.
58 lines
2.3 KiB
C
58 lines
2.3 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) = (start_sample == 0 && sample_iterator == 0) ? *(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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