43b374e8c5
This commit contains the first part of the new Cycles denoising option, which filters the resulting image using information gathered during rendering to get rid of noise while preserving visual features as well as possible. To use the option, enable it in the render layer options. The default settings fit a wide range of scenes, but the user can tweak individual settings to control the tradeoff between a noise-free image, image details, and calculation time. Note that the denoiser may still change in the future and that some features are not implemented yet. The most important missing feature is animation denoising, which uses information from multiple frames at once to produce a flicker-free and smoother result. These features will be added in the future. Finally, thanks to all the people who supported this project: - Google (through the GSoC) and Theory Studios for sponsoring the development - The authors of the papers I used for implementing the denoiser (more details on them will be included in the technical docs) - The other Cycles devs for feedback on the code, especially Sergey for mentoring the GSoC project and Brecht for the code review! - And of course the users who helped with testing, reported bugs and things that could and/or should work better!
138 lines
4.9 KiB
C++
138 lines
4.9 KiB
C++
/*
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* Copyright 2011-2016 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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#ifndef __DEVICE_SPLIT_KERNEL_H__
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#define __DEVICE_SPLIT_KERNEL_H__
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#include "device/device.h"
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#include "render/buffers.h"
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CCL_NAMESPACE_BEGIN
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/* When allocate global memory in chunks. We may not be able to
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* allocate exactly "CL_DEVICE_MAX_MEM_ALLOC_SIZE" bytes in chunks;
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* Since some bytes may be needed for aligning chunks of memory;
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* This is the amount of memory that we dedicate for that purpose.
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*/
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#define DATA_ALLOCATION_MEM_FACTOR 5000000 //5MB
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/* Types used for split kernel */
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class KernelDimensions {
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public:
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size_t global_size[2];
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size_t local_size[2];
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KernelDimensions(size_t global_size_[2], size_t local_size_[2])
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{
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memcpy(global_size, global_size_, sizeof(global_size));
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memcpy(local_size, local_size_, sizeof(local_size));
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}
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};
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class SplitKernelFunction {
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public:
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virtual ~SplitKernelFunction() {}
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/* enqueue the kernel, returns false if there is an error */
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virtual bool enqueue(const KernelDimensions& dim, device_memory& kg, device_memory& data) = 0;
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};
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class DeviceSplitKernel {
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private:
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Device *device;
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SplitKernelFunction *kernel_path_init;
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SplitKernelFunction *kernel_scene_intersect;
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SplitKernelFunction *kernel_lamp_emission;
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SplitKernelFunction *kernel_do_volume;
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SplitKernelFunction *kernel_queue_enqueue;
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SplitKernelFunction *kernel_indirect_background;
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SplitKernelFunction *kernel_shader_setup;
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SplitKernelFunction *kernel_shader_sort;
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SplitKernelFunction *kernel_shader_eval;
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SplitKernelFunction *kernel_holdout_emission_blurring_pathtermination_ao;
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SplitKernelFunction *kernel_subsurface_scatter;
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SplitKernelFunction *kernel_direct_lighting;
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SplitKernelFunction *kernel_shadow_blocked_ao;
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SplitKernelFunction *kernel_shadow_blocked_dl;
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SplitKernelFunction *kernel_next_iteration_setup;
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SplitKernelFunction *kernel_indirect_subsurface;
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SplitKernelFunction *kernel_buffer_update;
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/* Global memory variables [porting]; These memory is used for
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* co-operation between different kernels; Data written by one
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* kernel will be available to another kernel via this global
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* memory.
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*/
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device_memory split_data;
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device_vector<uchar> ray_state;
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device_only_memory<int> queue_index; /* Array of size num_queues that tracks the size of each queue. */
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/* Flag to make sceneintersect and lampemission kernel use queues. */
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device_only_memory<char> use_queues_flag;
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/* Approximate time it takes to complete one sample */
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double avg_time_per_sample;
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/* Work pool with respect to each work group. */
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device_only_memory<unsigned int> work_pool_wgs;
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/* clos_max value for which the kernels have been loaded currently. */
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int current_max_closure;
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/* Marked True in constructor and marked false at the end of path_trace(). */
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bool first_tile;
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/* Cached global size */
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size_t global_size[2];
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public:
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explicit DeviceSplitKernel(Device* device);
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virtual ~DeviceSplitKernel();
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bool load_kernels(const DeviceRequestedFeatures& requested_features);
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bool path_trace(DeviceTask *task,
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RenderTile& rtile,
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device_memory& kgbuffer,
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device_memory& kernel_data);
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virtual uint64_t state_buffer_size(device_memory& kg, device_memory& data, size_t num_threads) = 0;
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size_t max_elements_for_max_buffer_size(device_memory& kg, device_memory& data, uint64_t max_buffer_size);
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virtual bool enqueue_split_kernel_data_init(const KernelDimensions& dim,
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RenderTile& rtile,
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int num_global_elements,
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device_memory& kernel_globals,
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device_memory& kernel_data_,
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device_memory& split_data,
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device_memory& ray_state,
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device_memory& queue_index,
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device_memory& use_queues_flag,
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device_memory& work_pool_wgs) = 0;
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virtual SplitKernelFunction* get_split_kernel_function(string kernel_name, const DeviceRequestedFeatures&) = 0;
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virtual int2 split_kernel_local_size() = 0;
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virtual int2 split_kernel_global_size(device_memory& kg, device_memory& data, DeviceTask *task) = 0;
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};
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CCL_NAMESPACE_END
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#endif /* __DEVICE_SPLIT_KERNEL_H__ */
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