forked from bartvdbraak/blender
146 lines
5.4 KiB
C++
146 lines
5.4 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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{
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}
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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_enqueue_inactive;
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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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SplitKernelFunction *kernel_adaptive_stopping;
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SplitKernelFunction *kernel_adaptive_filter_x;
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SplitKernelFunction *kernel_adaptive_filter_y;
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SplitKernelFunction *kernel_adaptive_adjust_samples;
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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_only_memory<uchar> split_data;
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device_vector<uchar> ray_state;
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device_only_memory<int>
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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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/* Cached kernel-dependent data, initialized once. */
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bool kernel_data_initialized;
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size_t local_size[2];
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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,
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device_memory &data,
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size_t num_threads) = 0;
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size_t max_elements_for_max_buffer_size(device_memory &kg,
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device_memory &data,
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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(const string &kernel_name,
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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,
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device_memory &data,
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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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