d097c72f81
Global size depends on memory usage which might change during rendering. Havent seen it happen but seems possible that this could cause the global size to be different than what was used for allocating buffers.
136 lines
4.7 KiB
C++
136 lines
4.7 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_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_memory queue_index; /* Array of size num_queues * sizeof(int) 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_memory 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_memory 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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