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Diffstat (limited to 'intern/cycles/device/device_split_kernel.h')
| -rw-r--r-- | intern/cycles/device/device_split_kernel.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/intern/cycles/device/device_split_kernel.h b/intern/cycles/device/device_split_kernel.h new file mode 100644 index 00000000000..15a94953a11 --- /dev/null +++ b/intern/cycles/device/device_split_kernel.h @@ -0,0 +1,132 @@ +/* + * Copyright 2011-2016 Blender Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __DEVICE_SPLIT_KERNEL_H__ +#define __DEVICE_SPLIT_KERNEL_H__ + +#include "device/device.h" +#include "render/buffers.h" + +CCL_NAMESPACE_BEGIN + +/* When allocate global memory in chunks. We may not be able to + * allocate exactly "CL_DEVICE_MAX_MEM_ALLOC_SIZE" bytes in chunks; + * Since some bytes may be needed for aligning chunks of memory; + * This is the amount of memory that we dedicate for that purpose. + */ +#define DATA_ALLOCATION_MEM_FACTOR 5000000 //5MB + +/* Types used for split kernel */ + +class KernelDimensions { +public: + size_t global_size[2]; + size_t local_size[2]; + + KernelDimensions(size_t global_size_[2], size_t local_size_[2]) + { + memcpy(global_size, global_size_, sizeof(global_size)); + memcpy(local_size, local_size_, sizeof(local_size)); + } +}; + +class SplitKernelFunction { +public: + virtual ~SplitKernelFunction() {} + + /* enqueue the kernel, returns false if there is an error */ + virtual bool enqueue(const KernelDimensions& dim, device_memory& kg, device_memory& data) = 0; +}; + +class DeviceSplitKernel { +private: + Device *device; + + SplitKernelFunction *kernel_path_init; + SplitKernelFunction *kernel_scene_intersect; + SplitKernelFunction *kernel_lamp_emission; + SplitKernelFunction *kernel_do_volume; + SplitKernelFunction *kernel_queue_enqueue; + SplitKernelFunction *kernel_indirect_background; + SplitKernelFunction *kernel_shader_eval; + SplitKernelFunction *kernel_holdout_emission_blurring_pathtermination_ao; + SplitKernelFunction *kernel_subsurface_scatter; + SplitKernelFunction *kernel_direct_lighting; + SplitKernelFunction *kernel_shadow_blocked_ao; + SplitKernelFunction *kernel_shadow_blocked_dl; + SplitKernelFunction *kernel_next_iteration_setup; + SplitKernelFunction *kernel_indirect_subsurface; + SplitKernelFunction *kernel_buffer_update; + + /* Global memory variables [porting]; These memory is used for + * co-operation between different kernels; Data written by one + * kernel will be available to another kernel via this global + * memory. + */ + device_memory split_data; + device_vector<uchar> ray_state; + device_memory queue_index; /* Array of size num_queues * sizeof(int) that tracks the size of each queue. */ + + /* Flag to make sceneintersect and lampemission kernel use queues. */ + device_memory use_queues_flag; + + /* Approximate time it takes to complete one sample */ + double avg_time_per_sample; + + /* Work pool with respect to each work group. */ + device_memory work_pool_wgs; + + /* clos_max value for which the kernels have been loaded currently. */ + int current_max_closure; + + /* Marked True in constructor and marked false at the end of path_trace(). */ + bool first_tile; + +public: + explicit DeviceSplitKernel(Device* device); + virtual ~DeviceSplitKernel(); + + bool load_kernels(const DeviceRequestedFeatures& requested_features); + bool path_trace(DeviceTask *task, + RenderTile& rtile, + device_memory& kgbuffer, + device_memory& kernel_data); + + virtual uint64_t state_buffer_size(device_memory& kg, device_memory& data, size_t num_threads) = 0; + size_t max_elements_for_max_buffer_size(device_memory& kg, device_memory& data, uint64_t max_buffer_size); + + virtual bool enqueue_split_kernel_data_init(const KernelDimensions& dim, + RenderTile& rtile, + int num_global_elements, + device_memory& kernel_globals, + device_memory& kernel_data_, + device_memory& split_data, + device_memory& ray_state, + device_memory& queue_index, + device_memory& use_queues_flag, + device_memory& work_pool_wgs) = 0; + + virtual SplitKernelFunction* get_split_kernel_function(string kernel_name, const DeviceRequestedFeatures&) = 0; + virtual int2 split_kernel_local_size() = 0; + virtual int2 split_kernel_global_size(device_memory& kg, device_memory& data, DeviceTask *task) = 0; +}; + +CCL_NAMESPACE_END + +#endif /* __DEVICE_SPLIT_KERNEL_H__ */ + + + |