96868a3941
Overflow led to the state buffer being too small and the split kernel to get stuck doing nothing forever.
133 lines
4.7 KiB
C++
133 lines
4.7 KiB
C++
/*
|
|
* 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.h"
|
|
#include "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__ */
|
|
|
|
|
|
|