5cb6014efd
Guide the probability to scatter in or transmit through the volume. Only applied for primary rays. Co-authored-by: Brecht Van Lommel <brecht@blender.org>
90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#pragma once
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#include "kernel/device/cpu/globals.h"
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#include "kernel/integrator/state.h"
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#include "device/queue.h"
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#include "integrator/path_trace_work.h"
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#include "util/vector.h"
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CCL_NAMESPACE_BEGIN
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struct KernelWorkTile;
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struct ThreadKernelGlobalsCPU;
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struct IntegratorStateCPU;
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class CPUKernels;
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/* Implementation of PathTraceWork which schedules work on to queues pixel-by-pixel,
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* for CPU devices.
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*
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* NOTE: For the CPU rendering there are assumptions about TBB arena size and number of concurrent
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* queues on the render device which makes this work be only usable on CPU. */
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class PathTraceWorkCPU : public PathTraceWork {
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public:
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PathTraceWorkCPU(Device *device,
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Film *film,
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DeviceScene *device_scene,
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const bool *cancel_requested_flag);
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void init_execution() override;
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void render_samples(RenderStatistics &statistics,
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const int start_sample,
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const int samples_num,
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const int sample_offset) override;
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void copy_to_display(PathTraceDisplay *display,
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PassMode pass_mode,
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const int num_samples) override;
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void destroy_gpu_resources(PathTraceDisplay *display) override;
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bool copy_render_buffers_from_device() override;
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bool copy_render_buffers_to_device() override;
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bool zero_render_buffers() override;
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int adaptive_sampling_converge_filter_count_active(const float threshold, bool reset) override;
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void cryptomatte_postproces() override;
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void denoise_volume_guiding_buffers() override;
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#if defined(WITH_PATH_GUIDING)
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/* Initializes the per-thread guiding kernel data. The function sets the pointers to the
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* global guiding field and the sample data storage as well es initializes the per-thread
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* guided sampling distributions (e.g., SurfaceSamplingDistribution and
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* VolumeSamplingDistribution). */
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void guiding_init_kernel_globals(void *guiding_field,
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void *sample_data_storage,
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const bool train) override;
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/* Pushes the collected training data/samples of a path to the global sample storage.
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* This function is called at the end of a random walk/path generation. */
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void guiding_push_sample_data_to_global_storage(ThreadKernelGlobalsCPU *kg,
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IntegratorStateCPU *state,
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ccl_global float *ccl_restrict render_buffer);
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#endif
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protected:
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/* Core path tracing routine. Renders given work time on the given queue. */
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void render_samples_full_pipeline(ThreadKernelGlobalsCPU *kernel_globals,
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const KernelWorkTile &work_tile,
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const int samples_num);
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/* CPU kernels. */
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const CPUKernels &kernels_;
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/* Copy of kernel globals which is suitable for concurrent access from multiple threads.
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*
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* More specifically, the `kernel_globals_` is local to each threads and nobody else is
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* accessing it, but some "localization" is required to decouple from kernel globals stored
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* on the device level. */
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vector<ThreadKernelGlobalsCPU> kernel_thread_globals_;
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};
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CCL_NAMESPACE_END
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