forked from bartvdbraak/blender
3392 lines
108 KiB
C++
3392 lines
108 KiB
C++
/*
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* Copyright 2011-2013 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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#ifdef WITH_OPENCL
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "clew.h"
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#include "device.h"
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#include "device_intern.h"
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#include "buffers.h"
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#include "util_foreach.h"
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#include "util_logging.h"
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#include "util_map.h"
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#include "util_math.h"
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#include "util_md5.h"
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#include "util_opengl.h"
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#include "util_path.h"
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#include "util_time.h"
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CCL_NAMESPACE_BEGIN
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#define CL_MEM_PTR(p) ((cl_mem)(uintptr_t)(p))
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/* Macro declarations used with split kernel */
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/* Macro to enable/disable work-stealing */
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#define __WORK_STEALING__
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#define SPLIT_KERNEL_LOCAL_SIZE_X 64
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#define SPLIT_KERNEL_LOCAL_SIZE_Y 1
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/* This value may be tuned according to the scene we are rendering.
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*
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* Modifying PATH_ITER_INC_FACTOR value proportional to number of expected
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* ray-bounces will improve performance.
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*/
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#define PATH_ITER_INC_FACTOR 8
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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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static cl_device_type opencl_device_type()
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{
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char *device = getenv("CYCLES_OPENCL_TEST");
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if(device) {
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if(strcmp(device, "ALL") == 0)
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return CL_DEVICE_TYPE_ALL;
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else if(strcmp(device, "DEFAULT") == 0)
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return CL_DEVICE_TYPE_DEFAULT;
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else if(strcmp(device, "CPU") == 0)
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return CL_DEVICE_TYPE_CPU;
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else if(strcmp(device, "GPU") == 0)
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return CL_DEVICE_TYPE_GPU;
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else if(strcmp(device, "ACCELERATOR") == 0)
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return CL_DEVICE_TYPE_ACCELERATOR;
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}
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return CL_DEVICE_TYPE_ALL;
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}
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static bool opencl_kernel_use_debug()
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{
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return (getenv("CYCLES_OPENCL_DEBUG") != NULL);
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}
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static bool opencl_kernel_use_advanced_shading(const string& platform)
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{
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/* keep this in sync with kernel_types.h! */
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if(platform == "NVIDIA CUDA")
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return true;
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else if(platform == "Apple")
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return false;
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else if(platform == "AMD Accelerated Parallel Processing")
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return false;
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else if(platform == "Intel(R) OpenCL")
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return true;
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return false;
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}
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static string opencl_kernel_build_options(const string& platform, const string *debug_src = NULL)
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{
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string build_options = " -cl-fast-relaxed-math ";
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if(platform == "NVIDIA CUDA")
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build_options += "-D__KERNEL_OPENCL_NVIDIA__ -cl-nv-maxrregcount=32 -cl-nv-verbose ";
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else if(platform == "Apple")
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build_options += "-D__KERNEL_OPENCL_APPLE__ ";
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else if(platform == "AMD Accelerated Parallel Processing")
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build_options += "-D__KERNEL_OPENCL_AMD__ ";
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else if(platform == "Intel(R) OpenCL") {
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build_options += "-D__KERNEL_OPENCL_INTEL_CPU__ ";
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/* options for gdb source level kernel debugging. this segfaults on linux currently */
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if(opencl_kernel_use_debug() && debug_src)
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build_options += "-g -s \"" + *debug_src + "\" ";
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}
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if(opencl_kernel_use_debug())
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build_options += "-D__KERNEL_OPENCL_DEBUG__ ";
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#ifdef WITH_CYCLES_DEBUG
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build_options += "-D__KERNEL_DEBUG__ ";
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#endif
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return build_options;
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}
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/* thread safe cache for contexts and programs */
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class OpenCLCache
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{
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struct Slot
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{
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thread_mutex *mutex;
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cl_context context;
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/* cl_program for shader, bake, film_convert kernels (used in OpenCLDeviceBase) */
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cl_program ocl_dev_base_program;
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/* cl_program for megakernel (used in OpenCLDeviceMegaKernel) */
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cl_program ocl_dev_megakernel_program;
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Slot() : mutex(NULL), context(NULL), ocl_dev_base_program(NULL), ocl_dev_megakernel_program(NULL) {}
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Slot(const Slot &rhs)
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: mutex(rhs.mutex)
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, context(rhs.context)
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, ocl_dev_base_program(rhs.ocl_dev_base_program)
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, ocl_dev_megakernel_program(rhs.ocl_dev_megakernel_program)
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{
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/* copy can only happen in map insert, assert that */
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assert(mutex == NULL);
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}
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~Slot()
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{
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delete mutex;
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mutex = NULL;
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}
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};
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/* key is combination of platform ID and device ID */
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typedef pair<cl_platform_id, cl_device_id> PlatformDevicePair;
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/* map of Slot objects */
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typedef map<PlatformDevicePair, Slot> CacheMap;
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CacheMap cache;
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thread_mutex cache_lock;
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/* lazy instantiate */
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static OpenCLCache &global_instance()
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{
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static OpenCLCache instance;
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return instance;
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}
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OpenCLCache()
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{
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}
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~OpenCLCache()
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{
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/* Intel OpenCL bug raises SIGABRT due to pure virtual call
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* so this is disabled. It's not necessary to free objects
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* at process exit anyway.
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* http://software.intel.com/en-us/forums/topic/370083#comments */
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//flush();
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}
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/* lookup something in the cache. If this returns NULL, slot_locker
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* will be holding a lock for the cache. slot_locker should refer to a
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* default constructed thread_scoped_lock */
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template<typename T>
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static T get_something(cl_platform_id platform, cl_device_id device,
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T Slot::*member, thread_scoped_lock &slot_locker)
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{
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assert(platform != NULL);
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OpenCLCache &self = global_instance();
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thread_scoped_lock cache_lock(self.cache_lock);
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pair<CacheMap::iterator,bool> ins = self.cache.insert(
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CacheMap::value_type(PlatformDevicePair(platform, device), Slot()));
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Slot &slot = ins.first->second;
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/* create slot lock only while holding cache lock */
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if(!slot.mutex)
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slot.mutex = new thread_mutex;
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/* need to unlock cache before locking slot, to allow store to complete */
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cache_lock.unlock();
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/* lock the slot */
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slot_locker = thread_scoped_lock(*slot.mutex);
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/* If the thing isn't cached */
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if(slot.*member == NULL) {
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/* return with the caller's lock holder holding the slot lock */
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return NULL;
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}
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/* the item was already cached, release the slot lock */
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slot_locker.unlock();
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return slot.*member;
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}
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/* store something in the cache. you MUST have tried to get the item before storing to it */
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template<typename T>
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static void store_something(cl_platform_id platform, cl_device_id device, T thing,
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T Slot::*member, thread_scoped_lock &slot_locker)
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{
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assert(platform != NULL);
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assert(device != NULL);
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assert(thing != NULL);
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OpenCLCache &self = global_instance();
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thread_scoped_lock cache_lock(self.cache_lock);
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CacheMap::iterator i = self.cache.find(PlatformDevicePair(platform, device));
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cache_lock.unlock();
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Slot &slot = i->second;
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/* sanity check */
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assert(i != self.cache.end());
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assert(slot.*member == NULL);
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slot.*member = thing;
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/* unlock the slot */
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slot_locker.unlock();
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}
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public:
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enum ProgramName {
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OCL_DEV_BASE_PROGRAM,
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OCL_DEV_MEGAKERNEL_PROGRAM,
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};
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/* see get_something comment */
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static cl_context get_context(cl_platform_id platform, cl_device_id device,
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thread_scoped_lock &slot_locker)
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{
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cl_context context = get_something<cl_context>(platform, device, &Slot::context, slot_locker);
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if(!context)
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return NULL;
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/* caller is going to release it when done with it, so retain it */
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cl_int ciErr = clRetainContext(context);
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assert(ciErr == CL_SUCCESS);
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(void)ciErr;
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return context;
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}
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/* see get_something comment */
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static cl_program get_program(cl_platform_id platform, cl_device_id device, ProgramName program_name,
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thread_scoped_lock &slot_locker)
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{
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cl_program program = NULL;
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if(program_name == OCL_DEV_BASE_PROGRAM) {
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/* Get program related to OpenCLDeviceBase */
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program = get_something<cl_program>(platform, device, &Slot::ocl_dev_base_program, slot_locker);
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}
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else if(program_name == OCL_DEV_MEGAKERNEL_PROGRAM) {
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/* Get program related to megakernel */
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program = get_something<cl_program>(platform, device, &Slot::ocl_dev_megakernel_program, slot_locker);
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} else {
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assert(!"Invalid program name");
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}
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if(!program)
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return NULL;
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/* caller is going to release it when done with it, so retain it */
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cl_int ciErr = clRetainProgram(program);
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assert(ciErr == CL_SUCCESS);
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(void)ciErr;
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return program;
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}
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/* see store_something comment */
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static void store_context(cl_platform_id platform, cl_device_id device, cl_context context,
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thread_scoped_lock &slot_locker)
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{
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store_something<cl_context>(platform, device, context, &Slot::context, slot_locker);
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/* increment reference count in OpenCL.
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* The caller is going to release the object when done with it. */
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cl_int ciErr = clRetainContext(context);
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assert(ciErr == CL_SUCCESS);
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(void)ciErr;
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}
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/* see store_something comment */
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static void store_program(cl_platform_id platform, cl_device_id device, cl_program program, ProgramName program_name,
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thread_scoped_lock &slot_locker)
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{
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if(program_name == OCL_DEV_BASE_PROGRAM) {
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store_something<cl_program>(platform, device, program, &Slot::ocl_dev_base_program, slot_locker);
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}
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else if(program_name == OCL_DEV_MEGAKERNEL_PROGRAM) {
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store_something<cl_program>(platform, device, program, &Slot::ocl_dev_megakernel_program, slot_locker);
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} else {
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assert(!"Invalid program name\n");
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return;
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}
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/* increment reference count in OpenCL.
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* The caller is going to release the object when done with it. */
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cl_int ciErr = clRetainProgram(program);
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assert(ciErr == CL_SUCCESS);
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(void)ciErr;
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}
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/* discard all cached contexts and programs
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* the parameter is a temporary workaround. See OpenCLCache::~OpenCLCache */
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static void flush()
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{
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OpenCLCache &self = global_instance();
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thread_scoped_lock cache_lock(self.cache_lock);
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foreach(CacheMap::value_type &item, self.cache) {
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if(item.second.ocl_dev_base_program != NULL)
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clReleaseProgram(item.second.ocl_dev_base_program);
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if(item.second.ocl_dev_megakernel_program != NULL)
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clReleaseProgram(item.second.ocl_dev_megakernel_program);
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if(item.second.context != NULL)
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clReleaseContext(item.second.context);
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}
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self.cache.clear();
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}
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};
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class OpenCLDeviceBase : public Device
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{
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public:
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DedicatedTaskPool task_pool;
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cl_context cxContext;
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cl_command_queue cqCommandQueue;
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cl_platform_id cpPlatform;
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cl_device_id cdDevice;
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cl_program cpProgram;
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cl_kernel ckFilmConvertByteKernel;
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cl_kernel ckFilmConvertHalfFloatKernel;
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cl_kernel ckShaderKernel;
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cl_kernel ckBakeKernel;
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cl_int ciErr;
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typedef map<string, device_vector<uchar>*> ConstMemMap;
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typedef map<string, device_ptr> MemMap;
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ConstMemMap const_mem_map;
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MemMap mem_map;
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device_ptr null_mem;
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bool device_initialized;
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string platform_name;
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bool opencl_error(cl_int err)
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{
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if(err != CL_SUCCESS) {
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string message = string_printf("OpenCL error (%d): %s", err, clewErrorString(err));
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if(error_msg == "")
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error_msg = message;
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fprintf(stderr, "%s\n", message.c_str());
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return true;
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}
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return false;
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}
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void opencl_error(const string& message)
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{
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if(error_msg == "")
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error_msg = message;
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fprintf(stderr, "%s\n", message.c_str());
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}
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#define opencl_assert(stmt) \
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{ \
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cl_int err = stmt; \
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\
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if(err != CL_SUCCESS) { \
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string message = string_printf("OpenCL error: %s in %s", clewErrorString(err), #stmt); \
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if(error_msg == "") \
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error_msg = message; \
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fprintf(stderr, "%s\n", message.c_str()); \
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} \
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} (void)0
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void opencl_assert_err(cl_int err, const char* where)
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{
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if(err != CL_SUCCESS) {
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string message = string_printf("OpenCL error (%d): %s in %s", err, clewErrorString(err), where);
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if(error_msg == "")
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error_msg = message;
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fprintf(stderr, "%s\n", message.c_str());
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#ifndef NDEBUG
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abort();
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#endif
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}
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}
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OpenCLDeviceBase(DeviceInfo& info, Stats &stats, bool background_)
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: Device(info, stats, background_)
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{
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cpPlatform = NULL;
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cdDevice = NULL;
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cxContext = NULL;
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cqCommandQueue = NULL;
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cpProgram = NULL;
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ckFilmConvertByteKernel = NULL;
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ckFilmConvertHalfFloatKernel = NULL;
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ckShaderKernel = NULL;
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ckBakeKernel = NULL;
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null_mem = 0;
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device_initialized = false;
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/* setup platform */
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cl_uint num_platforms;
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ciErr = clGetPlatformIDs(0, NULL, &num_platforms);
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if(opencl_error(ciErr))
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return;
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if(num_platforms == 0) {
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opencl_error("OpenCL: no platforms found.");
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return;
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}
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vector<cl_platform_id> platforms(num_platforms, NULL);
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ciErr = clGetPlatformIDs(num_platforms, &platforms[0], NULL);
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if(opencl_error(ciErr)) {
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fprintf(stderr, "clGetPlatformIDs failed \n");
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return;
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}
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int num_base = 0;
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int total_devices = 0;
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for(int platform = 0; platform < num_platforms; platform++) {
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cl_uint num_devices;
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if(opencl_error(clGetDeviceIDs(platforms[platform], opencl_device_type(), 0, NULL, &num_devices)))
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return;
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total_devices += num_devices;
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if(info.num - num_base >= num_devices) {
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/* num doesn't refer to a device in this platform */
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num_base += num_devices;
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continue;
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}
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/* device is in this platform */
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cpPlatform = platforms[platform];
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/* get devices */
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vector<cl_device_id> device_ids(num_devices, NULL);
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if(opencl_error(clGetDeviceIDs(cpPlatform, opencl_device_type(), num_devices, &device_ids[0], NULL))) {
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fprintf(stderr, "clGetDeviceIDs failed \n");
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return;
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}
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cdDevice = device_ids[info.num - num_base];
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char name[256];
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clGetPlatformInfo(cpPlatform, CL_PLATFORM_NAME, sizeof(name), &name, NULL);
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platform_name = name;
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break;
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}
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if(total_devices == 0) {
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opencl_error("OpenCL: no devices found.");
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return;
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}
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else if(!cdDevice) {
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opencl_error("OpenCL: specified device not found.");
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return;
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}
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{
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/* try to use cached context */
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thread_scoped_lock cache_locker;
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cxContext = OpenCLCache::get_context(cpPlatform, cdDevice, cache_locker);
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if(cxContext == NULL) {
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/* create context properties array to specify platform */
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const cl_context_properties context_props[] = {
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CL_CONTEXT_PLATFORM, (cl_context_properties)cpPlatform,
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0, 0
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};
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/* create context */
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cxContext = clCreateContext(context_props, 1, &cdDevice,
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context_notify_callback, cdDevice, &ciErr);
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if(opencl_error(ciErr)) {
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opencl_error("OpenCL: clCreateContext failed");
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return;
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}
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/* cache it */
|
|
OpenCLCache::store_context(cpPlatform, cdDevice, cxContext, cache_locker);
|
|
}
|
|
}
|
|
|
|
cqCommandQueue = clCreateCommandQueue(cxContext, cdDevice, 0, &ciErr);
|
|
if(opencl_error(ciErr))
|
|
return;
|
|
|
|
null_mem = (device_ptr)clCreateBuffer(cxContext, CL_MEM_READ_ONLY, 1, NULL, &ciErr);
|
|
if(opencl_error(ciErr))
|
|
return;
|
|
|
|
fprintf(stderr, "Device init success\n");
|
|
device_initialized = true;
|
|
}
|
|
|
|
static void CL_CALLBACK context_notify_callback(const char *err_info,
|
|
const void * /*private_info*/, size_t /*cb*/, void *user_data)
|
|
{
|
|
char name[256];
|
|
clGetDeviceInfo((cl_device_id)user_data, CL_DEVICE_NAME, sizeof(name), &name, NULL);
|
|
|
|
fprintf(stderr, "OpenCL error (%s): %s\n", name, err_info);
|
|
}
|
|
|
|
bool opencl_version_check()
|
|
{
|
|
char version[256];
|
|
|
|
int major, minor, req_major = 1, req_minor = 1;
|
|
|
|
clGetPlatformInfo(cpPlatform, CL_PLATFORM_VERSION, sizeof(version), &version, NULL);
|
|
|
|
if(sscanf(version, "OpenCL %d.%d", &major, &minor) < 2) {
|
|
opencl_error(string_printf("OpenCL: failed to parse platform version string (%s).", version));
|
|
return false;
|
|
}
|
|
|
|
if(!((major == req_major && minor >= req_minor) || (major > req_major))) {
|
|
opencl_error(string_printf("OpenCL: platform version 1.1 or later required, found %d.%d", major, minor));
|
|
return false;
|
|
}
|
|
|
|
clGetDeviceInfo(cdDevice, CL_DEVICE_OPENCL_C_VERSION, sizeof(version), &version, NULL);
|
|
|
|
if(sscanf(version, "OpenCL C %d.%d", &major, &minor) < 2) {
|
|
opencl_error(string_printf("OpenCL: failed to parse OpenCL C version string (%s).", version));
|
|
return false;
|
|
}
|
|
|
|
if(!((major == req_major && minor >= req_minor) || (major > req_major))) {
|
|
opencl_error(string_printf("OpenCL: C version 1.1 or later required, found %d.%d", major, minor));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool load_binary(const string& /*kernel_path*/,
|
|
const string& clbin,
|
|
string custom_kernel_build_options,
|
|
cl_program *program,
|
|
const string *debug_src = NULL)
|
|
{
|
|
/* read binary into memory */
|
|
vector<uint8_t> binary;
|
|
|
|
if(!path_read_binary(clbin, binary)) {
|
|
opencl_error(string_printf("OpenCL failed to read cached binary %s.", clbin.c_str()));
|
|
return false;
|
|
}
|
|
|
|
/* create program */
|
|
cl_int status;
|
|
size_t size = binary.size();
|
|
const uint8_t *bytes = &binary[0];
|
|
|
|
*program = clCreateProgramWithBinary(cxContext, 1, &cdDevice,
|
|
&size, &bytes, &status, &ciErr);
|
|
|
|
if(opencl_error(status) || opencl_error(ciErr)) {
|
|
opencl_error(string_printf("OpenCL failed create program from cached binary %s.", clbin.c_str()));
|
|
return false;
|
|
}
|
|
|
|
if(!build_kernel(program, custom_kernel_build_options, debug_src))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool save_binary(cl_program *program, const string& clbin)
|
|
{
|
|
size_t size = 0;
|
|
clGetProgramInfo(*program, CL_PROGRAM_BINARY_SIZES, sizeof(size_t), &size, NULL);
|
|
|
|
if(!size)
|
|
return false;
|
|
|
|
vector<uint8_t> binary(size);
|
|
uint8_t *bytes = &binary[0];
|
|
|
|
clGetProgramInfo(*program, CL_PROGRAM_BINARIES, sizeof(uint8_t*), &bytes, NULL);
|
|
|
|
if(!path_write_binary(clbin, binary)) {
|
|
opencl_error(string_printf("OpenCL failed to write cached binary %s.", clbin.c_str()));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool build_kernel(cl_program *kernel_program,
|
|
string custom_kernel_build_options,
|
|
const string *debug_src = NULL)
|
|
{
|
|
string build_options;
|
|
build_options = opencl_kernel_build_options(platform_name, debug_src) + custom_kernel_build_options;
|
|
|
|
ciErr = clBuildProgram(*kernel_program, 0, NULL, build_options.c_str(), NULL, NULL);
|
|
|
|
/* show warnings even if build is successful */
|
|
size_t ret_val_size = 0;
|
|
|
|
clGetProgramBuildInfo(*kernel_program, cdDevice, CL_PROGRAM_BUILD_LOG, 0, NULL, &ret_val_size);
|
|
|
|
if(ret_val_size > 1) {
|
|
vector<char> build_log(ret_val_size + 1);
|
|
clGetProgramBuildInfo(*kernel_program, cdDevice, CL_PROGRAM_BUILD_LOG, ret_val_size, &build_log[0], NULL);
|
|
|
|
build_log[ret_val_size] = '\0';
|
|
fprintf(stderr, "OpenCL kernel build output:\n");
|
|
fprintf(stderr, "%s\n", &build_log[0]);
|
|
}
|
|
|
|
if(ciErr != CL_SUCCESS) {
|
|
opencl_error("OpenCL build failed: errors in console");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool compile_kernel(const string& kernel_path,
|
|
string source,
|
|
string custom_kernel_build_options,
|
|
cl_program *kernel_program,
|
|
const string *debug_src = NULL)
|
|
{
|
|
/* we compile kernels consisting of many files. unfortunately opencl
|
|
* kernel caches do not seem to recognize changes in included files.
|
|
* so we force recompile on changes by adding the md5 hash of all files */
|
|
source = path_source_replace_includes(source, kernel_path);
|
|
|
|
if(debug_src)
|
|
path_write_text(*debug_src, source);
|
|
|
|
size_t source_len = source.size();
|
|
const char *source_str = source.c_str();
|
|
|
|
*kernel_program = clCreateProgramWithSource(cxContext, 1, &source_str, &source_len, &ciErr);
|
|
|
|
if(opencl_error(ciErr))
|
|
return false;
|
|
|
|
double starttime = time_dt();
|
|
printf("Compiling OpenCL kernel ...\n");
|
|
|
|
if(!build_kernel(kernel_program, custom_kernel_build_options, debug_src))
|
|
return false;
|
|
|
|
printf("Kernel compilation finished in %.2lfs.\n", time_dt() - starttime);
|
|
|
|
return true;
|
|
}
|
|
|
|
string device_md5_hash(string kernel_custom_build_options = "")
|
|
{
|
|
MD5Hash md5;
|
|
char version[256], driver[256], name[256], vendor[256];
|
|
|
|
clGetPlatformInfo(cpPlatform, CL_PLATFORM_VENDOR, sizeof(vendor), &vendor, NULL);
|
|
clGetDeviceInfo(cdDevice, CL_DEVICE_VERSION, sizeof(version), &version, NULL);
|
|
clGetDeviceInfo(cdDevice, CL_DEVICE_NAME, sizeof(name), &name, NULL);
|
|
clGetDeviceInfo(cdDevice, CL_DRIVER_VERSION, sizeof(driver), &driver, NULL);
|
|
|
|
md5.append((uint8_t*)vendor, strlen(vendor));
|
|
md5.append((uint8_t*)version, strlen(version));
|
|
md5.append((uint8_t*)name, strlen(name));
|
|
md5.append((uint8_t*)driver, strlen(driver));
|
|
|
|
string options = opencl_kernel_build_options(platform_name);
|
|
options += kernel_custom_build_options;
|
|
md5.append((uint8_t*)options.c_str(), options.size());
|
|
|
|
return md5.get_hex();
|
|
}
|
|
|
|
bool load_kernels(const DeviceRequestedFeatures& /*requested_features*/)
|
|
{
|
|
/* verify if device was initialized */
|
|
if(!device_initialized) {
|
|
fprintf(stderr, "OpenCL: failed to initialize device.\n");
|
|
return false;
|
|
}
|
|
|
|
/* try to use cached kernel */
|
|
thread_scoped_lock cache_locker;
|
|
cpProgram = OpenCLCache::get_program(cpPlatform, cdDevice, OpenCLCache::OCL_DEV_BASE_PROGRAM, cache_locker);
|
|
|
|
if(!cpProgram) {
|
|
/* verify we have right opencl version */
|
|
if(!opencl_version_check())
|
|
return false;
|
|
|
|
/* md5 hash to detect changes */
|
|
string kernel_path = path_get("kernel");
|
|
string kernel_md5 = path_files_md5_hash(kernel_path);
|
|
string device_md5 = device_md5_hash();
|
|
|
|
/* path to cached binary */
|
|
string clbin = string_printf("cycles_kernel_%s_%s.clbin", device_md5.c_str(), kernel_md5.c_str());
|
|
clbin = path_user_get(path_join("cache", clbin));
|
|
|
|
/* path to preprocessed source for debugging */
|
|
string clsrc, *debug_src = NULL;
|
|
|
|
if(opencl_kernel_use_debug()) {
|
|
clsrc = string_printf("cycles_kernel_%s_%s.cl", device_md5.c_str(), kernel_md5.c_str());
|
|
clsrc = path_user_get(path_join("cache", clsrc));
|
|
debug_src = &clsrc;
|
|
}
|
|
|
|
/* if exists already, try use it */
|
|
if(path_exists(clbin) && load_binary(kernel_path, clbin, "", &cpProgram)) {
|
|
/* kernel loaded from binary */
|
|
}
|
|
else {
|
|
|
|
string init_kernel_source = "#include \"kernel.cl\" // " + kernel_md5 + "\n";
|
|
|
|
/* if does not exist or loading binary failed, compile kernel */
|
|
if(!compile_kernel(kernel_path, init_kernel_source, "", &cpProgram, debug_src))
|
|
return false;
|
|
|
|
/* save binary for reuse */
|
|
if(!save_binary(&cpProgram, clbin))
|
|
return false;
|
|
}
|
|
|
|
/* cache the program */
|
|
OpenCLCache::store_program(cpPlatform, cdDevice, cpProgram, OpenCLCache::OCL_DEV_BASE_PROGRAM, cache_locker);
|
|
}
|
|
|
|
/* find kernels */
|
|
ckFilmConvertByteKernel = clCreateKernel(cpProgram, "kernel_ocl_convert_to_byte", &ciErr);
|
|
if(opencl_error(ciErr))
|
|
return false;
|
|
|
|
ckFilmConvertHalfFloatKernel = clCreateKernel(cpProgram, "kernel_ocl_convert_to_half_float", &ciErr);
|
|
if(opencl_error(ciErr))
|
|
return false;
|
|
|
|
ckShaderKernel = clCreateKernel(cpProgram, "kernel_ocl_shader", &ciErr);
|
|
if(opencl_error(ciErr))
|
|
return false;
|
|
|
|
ckBakeKernel = clCreateKernel(cpProgram, "kernel_ocl_bake", &ciErr);
|
|
if(opencl_error(ciErr))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
~OpenCLDeviceBase()
|
|
{
|
|
task_pool.stop();
|
|
|
|
if(null_mem)
|
|
clReleaseMemObject(CL_MEM_PTR(null_mem));
|
|
|
|
ConstMemMap::iterator mt;
|
|
for(mt = const_mem_map.begin(); mt != const_mem_map.end(); mt++) {
|
|
mem_free(*(mt->second));
|
|
delete mt->second;
|
|
}
|
|
|
|
if(ckFilmConvertByteKernel)
|
|
clReleaseKernel(ckFilmConvertByteKernel);
|
|
if(ckFilmConvertHalfFloatKernel)
|
|
clReleaseKernel(ckFilmConvertHalfFloatKernel);
|
|
if(ckShaderKernel)
|
|
clReleaseKernel(ckShaderKernel);
|
|
if(ckBakeKernel)
|
|
clReleaseKernel(ckBakeKernel);
|
|
if(cpProgram)
|
|
clReleaseProgram(cpProgram);
|
|
if(cqCommandQueue)
|
|
clReleaseCommandQueue(cqCommandQueue);
|
|
if(cxContext)
|
|
clReleaseContext(cxContext);
|
|
}
|
|
|
|
void mem_alloc(device_memory& mem, MemoryType type)
|
|
{
|
|
size_t size = mem.memory_size();
|
|
|
|
cl_mem_flags mem_flag;
|
|
void *mem_ptr = NULL;
|
|
|
|
if(type == MEM_READ_ONLY)
|
|
mem_flag = CL_MEM_READ_ONLY;
|
|
else if(type == MEM_WRITE_ONLY)
|
|
mem_flag = CL_MEM_WRITE_ONLY;
|
|
else
|
|
mem_flag = CL_MEM_READ_WRITE;
|
|
|
|
mem.device_pointer = (device_ptr)clCreateBuffer(cxContext, mem_flag, size, mem_ptr, &ciErr);
|
|
|
|
opencl_assert_err(ciErr, "clCreateBuffer");
|
|
|
|
stats.mem_alloc(size);
|
|
mem.device_size = size;
|
|
}
|
|
|
|
void mem_copy_to(device_memory& mem)
|
|
{
|
|
/* this is blocking */
|
|
size_t size = mem.memory_size();
|
|
opencl_assert(clEnqueueWriteBuffer(cqCommandQueue, CL_MEM_PTR(mem.device_pointer), CL_TRUE, 0, size, (void*)mem.data_pointer, 0, NULL, NULL));
|
|
}
|
|
|
|
void mem_copy_from(device_memory& mem, int y, int w, int h, int elem)
|
|
{
|
|
size_t offset = elem*y*w;
|
|
size_t size = elem*w*h;
|
|
|
|
opencl_assert(clEnqueueReadBuffer(cqCommandQueue, CL_MEM_PTR(mem.device_pointer), CL_TRUE, offset, size, (uchar*)mem.data_pointer + offset, 0, NULL, NULL));
|
|
}
|
|
|
|
void mem_zero(device_memory& mem)
|
|
{
|
|
if(mem.device_pointer) {
|
|
memset((void*)mem.data_pointer, 0, mem.memory_size());
|
|
mem_copy_to(mem);
|
|
}
|
|
}
|
|
|
|
void mem_free(device_memory& mem)
|
|
{
|
|
if(mem.device_pointer) {
|
|
opencl_assert(clReleaseMemObject(CL_MEM_PTR(mem.device_pointer)));
|
|
mem.device_pointer = 0;
|
|
|
|
stats.mem_free(mem.device_size);
|
|
mem.device_size = 0;
|
|
}
|
|
}
|
|
|
|
void const_copy_to(const char *name, void *host, size_t size)
|
|
{
|
|
ConstMemMap::iterator i = const_mem_map.find(name);
|
|
|
|
if(i == const_mem_map.end()) {
|
|
device_vector<uchar> *data = new device_vector<uchar>();
|
|
data->copy((uchar*)host, size);
|
|
|
|
mem_alloc(*data, MEM_READ_ONLY);
|
|
i = const_mem_map.insert(ConstMemMap::value_type(name, data)).first;
|
|
}
|
|
else {
|
|
device_vector<uchar> *data = i->second;
|
|
data->copy((uchar*)host, size);
|
|
}
|
|
|
|
mem_copy_to(*i->second);
|
|
}
|
|
|
|
void tex_alloc(const char *name,
|
|
device_memory& mem,
|
|
InterpolationType /*interpolation*/,
|
|
bool /*periodic*/)
|
|
{
|
|
VLOG(1) << "Texture allocate: " << name << ", " << mem.memory_size() << " bytes.";
|
|
mem_alloc(mem, MEM_READ_ONLY);
|
|
mem_copy_to(mem);
|
|
assert(mem_map.find(name) == mem_map.end());
|
|
mem_map.insert(MemMap::value_type(name, mem.device_pointer));
|
|
}
|
|
|
|
void tex_free(device_memory& mem)
|
|
{
|
|
if(mem.device_pointer) {
|
|
foreach(const MemMap::value_type& value, mem_map) {
|
|
if(value.second == mem.device_pointer) {
|
|
mem_map.erase(value.first);
|
|
break;
|
|
}
|
|
}
|
|
|
|
mem_free(mem);
|
|
}
|
|
}
|
|
|
|
size_t global_size_round_up(int group_size, int global_size)
|
|
{
|
|
int r = global_size % group_size;
|
|
return global_size + ((r == 0)? 0: group_size - r);
|
|
}
|
|
|
|
void enqueue_kernel(cl_kernel kernel, size_t w, size_t h)
|
|
{
|
|
size_t workgroup_size, max_work_items[3];
|
|
|
|
clGetKernelWorkGroupInfo(kernel, cdDevice,
|
|
CL_KERNEL_WORK_GROUP_SIZE, sizeof(size_t), &workgroup_size, NULL);
|
|
clGetDeviceInfo(cdDevice,
|
|
CL_DEVICE_MAX_WORK_ITEM_SIZES, sizeof(size_t)*3, max_work_items, NULL);
|
|
|
|
/* try to divide evenly over 2 dimensions */
|
|
size_t sqrt_workgroup_size = max((size_t)sqrt((double)workgroup_size), 1);
|
|
size_t local_size[2] = {sqrt_workgroup_size, sqrt_workgroup_size};
|
|
|
|
/* some implementations have max size 1 on 2nd dimension */
|
|
if(local_size[1] > max_work_items[1]) {
|
|
local_size[0] = workgroup_size/max_work_items[1];
|
|
local_size[1] = max_work_items[1];
|
|
}
|
|
|
|
size_t global_size[2] = {global_size_round_up(local_size[0], w), global_size_round_up(local_size[1], h)};
|
|
|
|
/* run kernel */
|
|
opencl_assert(clEnqueueNDRangeKernel(cqCommandQueue, kernel, 2, NULL, global_size, NULL, 0, NULL, NULL));
|
|
opencl_assert(clFlush(cqCommandQueue));
|
|
}
|
|
|
|
void set_kernel_arg_mem(cl_kernel kernel, cl_uint *narg, const char *name)
|
|
{
|
|
cl_mem ptr;
|
|
|
|
MemMap::iterator i = mem_map.find(name);
|
|
if(i != mem_map.end()) {
|
|
ptr = CL_MEM_PTR(i->second);
|
|
}
|
|
else {
|
|
/* work around NULL not working, even though the spec says otherwise */
|
|
ptr = CL_MEM_PTR(null_mem);
|
|
}
|
|
|
|
opencl_assert(clSetKernelArg(kernel, (*narg)++, sizeof(ptr), (void*)&ptr));
|
|
}
|
|
|
|
void film_convert(DeviceTask& task, device_ptr buffer, device_ptr rgba_byte, device_ptr rgba_half)
|
|
{
|
|
/* cast arguments to cl types */
|
|
cl_mem d_data = CL_MEM_PTR(const_mem_map["__data"]->device_pointer);
|
|
cl_mem d_rgba = (rgba_byte)? CL_MEM_PTR(rgba_byte): CL_MEM_PTR(rgba_half);
|
|
cl_mem d_buffer = CL_MEM_PTR(buffer);
|
|
cl_int d_x = task.x;
|
|
cl_int d_y = task.y;
|
|
cl_int d_w = task.w;
|
|
cl_int d_h = task.h;
|
|
cl_float d_sample_scale = 1.0f/(task.sample + 1);
|
|
cl_int d_offset = task.offset;
|
|
cl_int d_stride = task.stride;
|
|
|
|
|
|
cl_kernel ckFilmConvertKernel = (rgba_byte)? ckFilmConvertByteKernel: ckFilmConvertHalfFloatKernel;
|
|
|
|
cl_uint start_arg_index =
|
|
kernel_set_args(ckFilmConvertKernel,
|
|
0,
|
|
d_data,
|
|
d_rgba,
|
|
d_buffer);
|
|
|
|
#define KERNEL_TEX(type, ttype, name) \
|
|
set_kernel_arg_mem(ckFilmConvertKernel, &start_arg_index, #name);
|
|
#include "kernel_textures.h"
|
|
#undef KERNEL_TEX
|
|
|
|
start_arg_index += kernel_set_args(ckFilmConvertKernel,
|
|
start_arg_index,
|
|
d_sample_scale,
|
|
d_x,
|
|
d_y,
|
|
d_w,
|
|
d_h,
|
|
d_offset,
|
|
d_stride);
|
|
|
|
enqueue_kernel(ckFilmConvertKernel, d_w, d_h);
|
|
}
|
|
|
|
void shader(DeviceTask& task)
|
|
{
|
|
/* cast arguments to cl types */
|
|
cl_mem d_data = CL_MEM_PTR(const_mem_map["__data"]->device_pointer);
|
|
cl_mem d_input = CL_MEM_PTR(task.shader_input);
|
|
cl_mem d_output = CL_MEM_PTR(task.shader_output);
|
|
cl_int d_shader_eval_type = task.shader_eval_type;
|
|
cl_int d_shader_x = task.shader_x;
|
|
cl_int d_shader_w = task.shader_w;
|
|
cl_int d_offset = task.offset;
|
|
|
|
cl_kernel kernel;
|
|
|
|
if(task.shader_eval_type >= SHADER_EVAL_BAKE)
|
|
kernel = ckBakeKernel;
|
|
else
|
|
kernel = ckShaderKernel;
|
|
|
|
for(int sample = 0; sample < task.num_samples; sample++) {
|
|
|
|
if(task.get_cancel())
|
|
break;
|
|
|
|
cl_int d_sample = sample;
|
|
|
|
cl_uint start_arg_index =
|
|
kernel_set_args(kernel,
|
|
0,
|
|
d_data,
|
|
d_input,
|
|
d_output);
|
|
|
|
#define KERNEL_TEX(type, ttype, name) \
|
|
set_kernel_arg_mem(kernel, &start_arg_index, #name);
|
|
#include "kernel_textures.h"
|
|
#undef KERNEL_TEX
|
|
|
|
start_arg_index += kernel_set_args(kernel,
|
|
start_arg_index,
|
|
d_shader_eval_type,
|
|
d_shader_x,
|
|
d_shader_w,
|
|
d_offset,
|
|
d_sample);
|
|
|
|
enqueue_kernel(kernel, task.shader_w, 1);
|
|
|
|
task.update_progress(NULL);
|
|
}
|
|
}
|
|
|
|
class OpenCLDeviceTask : public DeviceTask {
|
|
public:
|
|
OpenCLDeviceTask(OpenCLDeviceBase *device, DeviceTask& task)
|
|
: DeviceTask(task)
|
|
{
|
|
run = function_bind(&OpenCLDeviceBase::thread_run,
|
|
device,
|
|
this);
|
|
}
|
|
};
|
|
|
|
int get_split_task_count(DeviceTask& /*task*/)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
void task_add(DeviceTask& task)
|
|
{
|
|
task_pool.push(new OpenCLDeviceTask(this, task));
|
|
}
|
|
|
|
void task_wait()
|
|
{
|
|
task_pool.wait();
|
|
}
|
|
|
|
void task_cancel()
|
|
{
|
|
task_pool.cancel();
|
|
}
|
|
|
|
virtual void thread_run(DeviceTask * /*task*/) = 0;
|
|
|
|
protected:
|
|
class ArgumentWrapper {
|
|
public:
|
|
ArgumentWrapper() : size(0), pointer(NULL) {}
|
|
template <typename T>
|
|
ArgumentWrapper(T& argument) : size(sizeof(argument)),
|
|
pointer(&argument) { }
|
|
size_t size;
|
|
void *pointer;
|
|
};
|
|
|
|
/* TODO(sergey): In the future we can use variadic templates, once
|
|
* C++0x is allowed. Should allow to clean this up a bit.
|
|
*/
|
|
int kernel_set_args(cl_kernel kernel,
|
|
int start_argument_index,
|
|
const ArgumentWrapper& arg1 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg2 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg3 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg4 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg5 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg6 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg7 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg8 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg9 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg10 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg11 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg12 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg13 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg14 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg15 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg16 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg17 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg18 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg19 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg20 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg21 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg22 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg23 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg24 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg25 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg26 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg27 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg28 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg29 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg30 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg31 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg32 = ArgumentWrapper(),
|
|
const ArgumentWrapper& arg33 = ArgumentWrapper())
|
|
{
|
|
int current_arg_index = 0;
|
|
#define FAKE_VARARG_HANDLE_ARG(arg) \
|
|
do { \
|
|
if(arg.pointer != NULL) { \
|
|
opencl_assert(clSetKernelArg( \
|
|
kernel, \
|
|
start_argument_index + current_arg_index, \
|
|
arg.size, arg.pointer)); \
|
|
++current_arg_index; \
|
|
} \
|
|
else { \
|
|
return current_arg_index; \
|
|
} \
|
|
} while(false)
|
|
FAKE_VARARG_HANDLE_ARG(arg1);
|
|
FAKE_VARARG_HANDLE_ARG(arg2);
|
|
FAKE_VARARG_HANDLE_ARG(arg3);
|
|
FAKE_VARARG_HANDLE_ARG(arg4);
|
|
FAKE_VARARG_HANDLE_ARG(arg5);
|
|
FAKE_VARARG_HANDLE_ARG(arg6);
|
|
FAKE_VARARG_HANDLE_ARG(arg7);
|
|
FAKE_VARARG_HANDLE_ARG(arg8);
|
|
FAKE_VARARG_HANDLE_ARG(arg9);
|
|
FAKE_VARARG_HANDLE_ARG(arg10);
|
|
FAKE_VARARG_HANDLE_ARG(arg11);
|
|
FAKE_VARARG_HANDLE_ARG(arg12);
|
|
FAKE_VARARG_HANDLE_ARG(arg13);
|
|
FAKE_VARARG_HANDLE_ARG(arg14);
|
|
FAKE_VARARG_HANDLE_ARG(arg15);
|
|
FAKE_VARARG_HANDLE_ARG(arg16);
|
|
FAKE_VARARG_HANDLE_ARG(arg17);
|
|
FAKE_VARARG_HANDLE_ARG(arg18);
|
|
FAKE_VARARG_HANDLE_ARG(arg19);
|
|
FAKE_VARARG_HANDLE_ARG(arg20);
|
|
FAKE_VARARG_HANDLE_ARG(arg21);
|
|
FAKE_VARARG_HANDLE_ARG(arg22);
|
|
FAKE_VARARG_HANDLE_ARG(arg23);
|
|
FAKE_VARARG_HANDLE_ARG(arg24);
|
|
FAKE_VARARG_HANDLE_ARG(arg25);
|
|
FAKE_VARARG_HANDLE_ARG(arg26);
|
|
FAKE_VARARG_HANDLE_ARG(arg27);
|
|
FAKE_VARARG_HANDLE_ARG(arg28);
|
|
FAKE_VARARG_HANDLE_ARG(arg29);
|
|
FAKE_VARARG_HANDLE_ARG(arg30);
|
|
FAKE_VARARG_HANDLE_ARG(arg31);
|
|
FAKE_VARARG_HANDLE_ARG(arg32);
|
|
FAKE_VARARG_HANDLE_ARG(arg33);
|
|
#undef FAKE_VARARG_HANDLE_ARG
|
|
return current_arg_index;
|
|
}
|
|
|
|
inline void release_kernel_safe(cl_kernel kernel)
|
|
{
|
|
if(kernel) {
|
|
clReleaseKernel(kernel);
|
|
}
|
|
}
|
|
|
|
inline void release_mem_object_safe(cl_mem mem)
|
|
{
|
|
if(mem != NULL) {
|
|
clReleaseMemObject(mem);
|
|
}
|
|
}
|
|
|
|
inline void release_program_safe(cl_program program)
|
|
{
|
|
if(program) {
|
|
clReleaseProgram(program);
|
|
}
|
|
}
|
|
};
|
|
|
|
class OpenCLDeviceMegaKernel : public OpenCLDeviceBase
|
|
{
|
|
public:
|
|
cl_kernel ckPathTraceKernel;
|
|
cl_program path_trace_program;
|
|
|
|
OpenCLDeviceMegaKernel(DeviceInfo& info, Stats &stats, bool background_)
|
|
: OpenCLDeviceBase(info, stats, background_)
|
|
{
|
|
ckPathTraceKernel = NULL;
|
|
path_trace_program = NULL;
|
|
}
|
|
|
|
bool load_kernels(const DeviceRequestedFeatures& requested_features)
|
|
{
|
|
/* Get Shader, bake and film convert kernels.
|
|
* It'll also do verification of OpenCL actually initialized.
|
|
*/
|
|
if(!OpenCLDeviceBase::load_kernels(requested_features)) {
|
|
return false;
|
|
}
|
|
|
|
/* Try to use cached kernel. */
|
|
thread_scoped_lock cache_locker;
|
|
path_trace_program = OpenCLCache::get_program(cpPlatform,
|
|
cdDevice,
|
|
OpenCLCache::OCL_DEV_MEGAKERNEL_PROGRAM,
|
|
cache_locker);
|
|
|
|
if(!path_trace_program) {
|
|
/* Verify we have right opencl version. */
|
|
if(!opencl_version_check())
|
|
return false;
|
|
|
|
/* Calculate md5 hash to detect changes. */
|
|
string kernel_path = path_get("kernel");
|
|
string kernel_md5 = path_files_md5_hash(kernel_path);
|
|
string custom_kernel_build_options = "-D__COMPILE_ONLY_MEGAKERNEL__ ";
|
|
string device_md5 = device_md5_hash(custom_kernel_build_options);
|
|
|
|
/* Path to cached binary. */
|
|
string clbin = string_printf("cycles_kernel_%s_%s.clbin",
|
|
device_md5.c_str(),
|
|
kernel_md5.c_str());
|
|
clbin = path_user_get(path_join("cache", clbin));
|
|
|
|
/* Path to preprocessed source for debugging. */
|
|
string clsrc, *debug_src = NULL;
|
|
if(opencl_kernel_use_debug()) {
|
|
clsrc = string_printf("cycles_kernel_%s_%s.cl",
|
|
device_md5.c_str(),
|
|
kernel_md5.c_str());
|
|
clsrc = path_user_get(path_join("cache", clsrc));
|
|
debug_src = &clsrc;
|
|
}
|
|
|
|
/* If exists already, try use it. */
|
|
if(path_exists(clbin) && load_binary(kernel_path,
|
|
clbin,
|
|
custom_kernel_build_options,
|
|
&path_trace_program,
|
|
debug_src)) {
|
|
/* Kernel loaded from binary, nothing to do. */
|
|
}
|
|
else {
|
|
string init_kernel_source = "#include \"kernel.cl\" // " +
|
|
kernel_md5 + "\n";
|
|
/* If does not exist or loading binary failed, compile kernel. */
|
|
if(!compile_kernel(kernel_path,
|
|
init_kernel_source,
|
|
custom_kernel_build_options,
|
|
&path_trace_program,
|
|
debug_src))
|
|
{
|
|
return false;
|
|
}
|
|
/* Save binary for reuse. */
|
|
if(!save_binary(&path_trace_program, clbin)) {
|
|
return false;
|
|
}
|
|
}
|
|
/* Cache the program. */
|
|
OpenCLCache::store_program(cpPlatform,
|
|
cdDevice,
|
|
path_trace_program,
|
|
OpenCLCache::OCL_DEV_MEGAKERNEL_PROGRAM,
|
|
cache_locker);
|
|
}
|
|
|
|
/* Find kernels. */
|
|
ckPathTraceKernel = clCreateKernel(path_trace_program,
|
|
"kernel_ocl_path_trace",
|
|
&ciErr);
|
|
if(opencl_error(ciErr))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
~OpenCLDeviceMegaKernel()
|
|
{
|
|
task_pool.stop();
|
|
release_kernel_safe(ckPathTraceKernel);
|
|
release_program_safe(path_trace_program);
|
|
}
|
|
|
|
void path_trace(RenderTile& rtile, int sample)
|
|
{
|
|
/* Cast arguments to cl types. */
|
|
cl_mem d_data = CL_MEM_PTR(const_mem_map["__data"]->device_pointer);
|
|
cl_mem d_buffer = CL_MEM_PTR(rtile.buffer);
|
|
cl_mem d_rng_state = CL_MEM_PTR(rtile.rng_state);
|
|
cl_int d_x = rtile.x;
|
|
cl_int d_y = rtile.y;
|
|
cl_int d_w = rtile.w;
|
|
cl_int d_h = rtile.h;
|
|
cl_int d_offset = rtile.offset;
|
|
cl_int d_stride = rtile.stride;
|
|
|
|
/* Sample arguments. */
|
|
cl_int d_sample = sample;
|
|
|
|
cl_uint start_arg_index =
|
|
kernel_set_args(ckPathTraceKernel,
|
|
0,
|
|
d_data,
|
|
d_buffer,
|
|
d_rng_state);
|
|
|
|
#define KERNEL_TEX(type, ttype, name) \
|
|
set_kernel_arg_mem(ckPathTraceKernel, &start_arg_index, #name);
|
|
#include "kernel_textures.h"
|
|
#undef KERNEL_TEX
|
|
|
|
start_arg_index += kernel_set_args(ckPathTraceKernel,
|
|
start_arg_index,
|
|
d_sample,
|
|
d_x,
|
|
d_y,
|
|
d_w,
|
|
d_h,
|
|
d_offset,
|
|
d_stride);
|
|
|
|
enqueue_kernel(ckPathTraceKernel, d_w, d_h);
|
|
}
|
|
|
|
void thread_run(DeviceTask *task)
|
|
{
|
|
if(task->type == DeviceTask::FILM_CONVERT) {
|
|
film_convert(*task, task->buffer, task->rgba_byte, task->rgba_half);
|
|
}
|
|
else if(task->type == DeviceTask::SHADER) {
|
|
shader(*task);
|
|
}
|
|
else if(task->type == DeviceTask::PATH_TRACE) {
|
|
RenderTile tile;
|
|
/* Keep rendering tiles until done. */
|
|
while(task->acquire_tile(this, tile)) {
|
|
int start_sample = tile.start_sample;
|
|
int end_sample = tile.start_sample + tile.num_samples;
|
|
|
|
for(int sample = start_sample; sample < end_sample; sample++) {
|
|
if(task->get_cancel()) {
|
|
if(task->need_finish_queue == false)
|
|
break;
|
|
}
|
|
|
|
path_trace(tile, sample);
|
|
|
|
tile.sample = sample + 1;
|
|
|
|
task->update_progress(&tile);
|
|
}
|
|
|
|
/* Complete kernel execution before release tile */
|
|
/* This helps in multi-device render;
|
|
* The device that reaches the critical-section function
|
|
* release_tile waits (stalling other devices from entering
|
|
* release_tile) for all kernels to complete. If device1 (a
|
|
* slow-render device) reaches release_tile first then it would
|
|
* stall device2 (a fast-render device) from proceeding to render
|
|
* next tile.
|
|
*/
|
|
clFinish(cqCommandQueue);
|
|
|
|
task->release_tile(tile);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
/* TODO(sergey): This is to keep tile split on OpenCL level working
|
|
* for now, since withotu this viewport render does not work as it
|
|
* should.
|
|
*
|
|
* Ideally it'll be done on the higher level, but we need to get ready
|
|
* for merge rather soon, so let's keep split logic private here in
|
|
* the file.
|
|
*/
|
|
class SplitRenderTile : public RenderTile {
|
|
public:
|
|
SplitRenderTile()
|
|
: RenderTile(),
|
|
buffer_offset_x(0),
|
|
buffer_offset_y(0),
|
|
rng_state_offset_x(0),
|
|
rng_state_offset_y(0),
|
|
buffer_rng_state_stride(0) {}
|
|
|
|
explicit SplitRenderTile(RenderTile& tile)
|
|
: RenderTile(),
|
|
buffer_offset_x(0),
|
|
buffer_offset_y(0),
|
|
rng_state_offset_x(0),
|
|
rng_state_offset_y(0),
|
|
buffer_rng_state_stride(0)
|
|
{
|
|
x = tile.x;
|
|
y = tile.y;
|
|
w = tile.w;
|
|
h = tile.h;
|
|
start_sample = tile.start_sample;
|
|
num_samples = tile.num_samples;
|
|
sample = tile.sample;
|
|
resolution = tile.resolution;
|
|
offset = tile.offset;
|
|
stride = tile.stride;
|
|
buffer = tile.buffer;
|
|
rng_state = tile.rng_state;
|
|
buffers = tile.buffers;
|
|
}
|
|
|
|
/* Split kernel is device global memory constained;
|
|
* hence split kernel cant render big tile size's in
|
|
* one go. If the user sets a big tile size (big tile size
|
|
* is a term relative to the available device global memory),
|
|
* we split the tile further and then call path_trace on
|
|
* each of those split tiles. The following variables declared,
|
|
* assist in achieving that purpose
|
|
*/
|
|
int buffer_offset_x;
|
|
int buffer_offset_y;
|
|
int rng_state_offset_x;
|
|
int rng_state_offset_y;
|
|
int buffer_rng_state_stride;
|
|
};
|
|
|
|
/* OpenCLDeviceSplitKernel's declaration/definition. */
|
|
class OpenCLDeviceSplitKernel : public OpenCLDeviceBase
|
|
{
|
|
public:
|
|
/* Kernel declaration. */
|
|
cl_kernel ckPathTraceKernel_data_init;
|
|
cl_kernel ckPathTraceKernel_scene_intersect;
|
|
cl_kernel ckPathTraceKernel_lamp_emission;
|
|
cl_kernel ckPathTraceKernel_queue_enqueue;
|
|
cl_kernel ckPathTraceKernel_background_buffer_update;
|
|
cl_kernel ckPathTraceKernel_shader_lighting;
|
|
cl_kernel ckPathTraceKernel_holdout_emission_blurring_pathtermination_ao;
|
|
cl_kernel ckPathTraceKernel_direct_lighting;
|
|
cl_kernel ckPathTraceKernel_shadow_blocked_direct_lighting;
|
|
cl_kernel ckPathTraceKernel_setup_next_iteration;
|
|
cl_kernel ckPathTraceKernel_sum_all_radiance;
|
|
|
|
/* cl_program declaration. */
|
|
cl_program data_init_program;
|
|
cl_program scene_intersect_program;
|
|
cl_program lamp_emission_program;
|
|
cl_program queue_enqueue_program;
|
|
cl_program background_buffer_update_program;
|
|
cl_program shader_eval_program;
|
|
cl_program holdout_emission_blurring_termination_ao_program;
|
|
cl_program direct_lighting_program;
|
|
cl_program shadow_blocked_program;
|
|
cl_program next_iteration_setup_program;
|
|
cl_program sum_all_radiance_program;
|
|
|
|
/* Global memory variables [porting]; These memory is used for
|
|
* co-operation between different kernels; Data written by one
|
|
* kernel will be avaible to another kernel via this global
|
|
* memory.
|
|
*/
|
|
cl_mem rng_coop;
|
|
cl_mem throughput_coop;
|
|
cl_mem L_transparent_coop;
|
|
cl_mem PathRadiance_coop;
|
|
cl_mem Ray_coop;
|
|
cl_mem PathState_coop;
|
|
cl_mem Intersection_coop;
|
|
cl_mem kgbuffer; /* KernelGlobals buffer. */
|
|
|
|
/* Global buffers for ShaderData. */
|
|
cl_mem sd; /* ShaderData used in the main path-iteration loop. */
|
|
cl_mem sd_DL_shadow; /* ShaderData used in Direct Lighting and
|
|
* shadow_blocked kernel.
|
|
*/
|
|
|
|
/* Global buffers of each member of ShaderData. */
|
|
cl_mem P_sd;
|
|
cl_mem P_sd_DL_shadow;
|
|
cl_mem N_sd;
|
|
cl_mem N_sd_DL_shadow;
|
|
cl_mem Ng_sd;
|
|
cl_mem Ng_sd_DL_shadow;
|
|
cl_mem I_sd;
|
|
cl_mem I_sd_DL_shadow;
|
|
cl_mem shader_sd;
|
|
cl_mem shader_sd_DL_shadow;
|
|
cl_mem flag_sd;
|
|
cl_mem flag_sd_DL_shadow;
|
|
cl_mem prim_sd;
|
|
cl_mem prim_sd_DL_shadow;
|
|
cl_mem type_sd;
|
|
cl_mem type_sd_DL_shadow;
|
|
cl_mem u_sd;
|
|
cl_mem u_sd_DL_shadow;
|
|
cl_mem v_sd;
|
|
cl_mem v_sd_DL_shadow;
|
|
cl_mem object_sd;
|
|
cl_mem object_sd_DL_shadow;
|
|
cl_mem time_sd;
|
|
cl_mem time_sd_DL_shadow;
|
|
cl_mem ray_length_sd;
|
|
cl_mem ray_length_sd_DL_shadow;
|
|
cl_mem ray_depth_sd;
|
|
cl_mem ray_depth_sd_DL_shadow;
|
|
cl_mem transparent_depth_sd;
|
|
cl_mem transparent_depth_sd_DL_shadow;
|
|
#ifdef __RAY_DIFFERENTIALS__
|
|
cl_mem dP_sd, dI_sd;
|
|
cl_mem dP_sd_DL_shadow, dI_sd_DL_shadow;
|
|
cl_mem du_sd, dv_sd;
|
|
cl_mem du_sd_DL_shadow, dv_sd_DL_shadow;
|
|
#endif
|
|
#ifdef __DPDU__
|
|
cl_mem dPdu_sd, dPdv_sd;
|
|
cl_mem dPdu_sd_DL_shadow, dPdv_sd_DL_shadow;
|
|
#endif
|
|
cl_mem closure_sd;
|
|
cl_mem closure_sd_DL_shadow;
|
|
cl_mem num_closure_sd;
|
|
cl_mem num_closure_sd_DL_shadow;
|
|
cl_mem randb_closure_sd;
|
|
cl_mem randb_closure_sd_DL_shadow;
|
|
cl_mem ray_P_sd;
|
|
cl_mem ray_P_sd_DL_shadow;
|
|
cl_mem ray_dP_sd;
|
|
cl_mem ray_dP_sd_DL_shadow;
|
|
|
|
/* Global memory required for shadow blocked and accum_radiance. */
|
|
cl_mem BSDFEval_coop;
|
|
cl_mem ISLamp_coop;
|
|
cl_mem LightRay_coop;
|
|
cl_mem AOAlpha_coop;
|
|
cl_mem AOBSDF_coop;
|
|
cl_mem AOLightRay_coop;
|
|
cl_mem Intersection_coop_AO;
|
|
cl_mem Intersection_coop_DL;
|
|
|
|
#ifdef WITH_CYCLES_DEBUG
|
|
/* DebugData memory */
|
|
cl_mem debugdata_coop;
|
|
#endif
|
|
|
|
/* Global state array that tracks ray state. */
|
|
cl_mem ray_state;
|
|
|
|
/* Per sample buffers. */
|
|
cl_mem per_sample_output_buffers;
|
|
|
|
/* Denotes which sample each ray is being processed for. */
|
|
cl_mem work_array;
|
|
|
|
/* Queue */
|
|
cl_mem Queue_data; /* Array of size queuesize * num_queues * sizeof(int). */
|
|
cl_mem Queue_index; /* Array of size num_queues * sizeof(int);
|
|
* Tracks the size of each queue.
|
|
*/
|
|
|
|
/* Flag to make sceneintersect and lampemission kernel use queues. */
|
|
cl_mem use_queues_flag;
|
|
|
|
/* Amount of memory in output buffer associated with one pixel/thread. */
|
|
size_t per_thread_output_buffer_size;
|
|
|
|
/* Total allocatable available device memory. */
|
|
size_t total_allocatable_memory;
|
|
|
|
/* host version of ray_state; Used in checking host path-iteration
|
|
* termination.
|
|
*/
|
|
char *hostRayStateArray;
|
|
|
|
/* Number of path-iterations to be done in one shot. */
|
|
unsigned int PathIteration_times;
|
|
|
|
#ifdef __WORK_STEALING__
|
|
/* Work pool with respect to each work group. */
|
|
cl_mem work_pool_wgs;
|
|
|
|
/* Denotes the maximum work groups possible w.r.t. current tile size. */
|
|
unsigned int max_work_groups;
|
|
#endif
|
|
|
|
/* clos_max value for which the kernels have been loaded currently. */
|
|
int current_clos_max;
|
|
|
|
/* Marked True in constructor and marked false at the end of path_trace(). */
|
|
bool first_tile;
|
|
|
|
OpenCLDeviceSplitKernel(DeviceInfo& info, Stats &stats, bool background_)
|
|
: OpenCLDeviceBase(info, stats, background_)
|
|
{
|
|
|
|
info.use_split_kernel = true;
|
|
background = background_;
|
|
|
|
/* Initialize kernels. */
|
|
ckPathTraceKernel_data_init = NULL;
|
|
ckPathTraceKernel_scene_intersect = NULL;
|
|
ckPathTraceKernel_lamp_emission = NULL;
|
|
ckPathTraceKernel_background_buffer_update = NULL;
|
|
ckPathTraceKernel_shader_lighting = NULL;
|
|
ckPathTraceKernel_holdout_emission_blurring_pathtermination_ao = NULL;
|
|
ckPathTraceKernel_direct_lighting = NULL;
|
|
ckPathTraceKernel_shadow_blocked_direct_lighting = NULL;
|
|
ckPathTraceKernel_setup_next_iteration = NULL;
|
|
ckPathTraceKernel_sum_all_radiance = NULL;
|
|
ckPathTraceKernel_queue_enqueue = NULL;
|
|
|
|
/* Initialize program. */
|
|
data_init_program = NULL;
|
|
scene_intersect_program = NULL;
|
|
lamp_emission_program = NULL;
|
|
queue_enqueue_program = NULL;
|
|
background_buffer_update_program = NULL;
|
|
shader_eval_program = NULL;
|
|
holdout_emission_blurring_termination_ao_program = NULL;
|
|
direct_lighting_program = NULL;
|
|
shadow_blocked_program = NULL;
|
|
next_iteration_setup_program = NULL;
|
|
sum_all_radiance_program = NULL;
|
|
|
|
/* Initialize cl_mem variables. */
|
|
kgbuffer = NULL;
|
|
sd = NULL;
|
|
sd_DL_shadow = NULL;
|
|
|
|
P_sd = NULL;
|
|
P_sd_DL_shadow = NULL;
|
|
N_sd = NULL;
|
|
N_sd_DL_shadow = NULL;
|
|
Ng_sd = NULL;
|
|
Ng_sd_DL_shadow = NULL;
|
|
I_sd = NULL;
|
|
I_sd_DL_shadow = NULL;
|
|
shader_sd = NULL;
|
|
shader_sd_DL_shadow = NULL;
|
|
flag_sd = NULL;
|
|
flag_sd_DL_shadow = NULL;
|
|
prim_sd = NULL;
|
|
prim_sd_DL_shadow = NULL;
|
|
type_sd = NULL;
|
|
type_sd_DL_shadow = NULL;
|
|
u_sd = NULL;
|
|
u_sd_DL_shadow = NULL;
|
|
v_sd = NULL;
|
|
v_sd_DL_shadow = NULL;
|
|
object_sd = NULL;
|
|
object_sd_DL_shadow = NULL;
|
|
time_sd = NULL;
|
|
time_sd_DL_shadow = NULL;
|
|
ray_length_sd = NULL;
|
|
ray_length_sd_DL_shadow = NULL;
|
|
ray_depth_sd = NULL;
|
|
ray_depth_sd_DL_shadow = NULL;
|
|
transparent_depth_sd = NULL;
|
|
transparent_depth_sd_DL_shadow = NULL;
|
|
#ifdef __RAY_DIFFERENTIALS__
|
|
dP_sd = NULL;
|
|
dI_sd = NULL;
|
|
dP_sd_DL_shadow = NULL;
|
|
dI_sd_DL_shadow = NULL;
|
|
du_sd = NULL;
|
|
dv_sd = NULL;
|
|
du_sd_DL_shadow = NULL;
|
|
dv_sd_DL_shadow = NULL;
|
|
#endif
|
|
#ifdef __DPDU__
|
|
dPdu_sd = NULL;
|
|
dPdv_sd = NULL;
|
|
dPdu_sd_DL_shadow = NULL;
|
|
dPdv_sd_DL_shadow = NULL;
|
|
#endif
|
|
closure_sd = NULL;
|
|
closure_sd_DL_shadow = NULL;
|
|
num_closure_sd = NULL;
|
|
num_closure_sd_DL_shadow = NULL;
|
|
randb_closure_sd = NULL;
|
|
randb_closure_sd_DL_shadow = NULL;
|
|
ray_P_sd = NULL;
|
|
ray_P_sd_DL_shadow = NULL;
|
|
ray_dP_sd = NULL;
|
|
ray_dP_sd_DL_shadow = NULL;
|
|
|
|
rng_coop = NULL;
|
|
throughput_coop = NULL;
|
|
L_transparent_coop = NULL;
|
|
PathRadiance_coop = NULL;
|
|
Ray_coop = NULL;
|
|
PathState_coop = NULL;
|
|
Intersection_coop = NULL;
|
|
ray_state = NULL;
|
|
|
|
AOAlpha_coop = NULL;
|
|
AOBSDF_coop = NULL;
|
|
AOLightRay_coop = NULL;
|
|
BSDFEval_coop = NULL;
|
|
ISLamp_coop = NULL;
|
|
LightRay_coop = NULL;
|
|
Intersection_coop_AO = NULL;
|
|
Intersection_coop_DL = NULL;
|
|
|
|
#ifdef WITH_CYCLES_DEBUG
|
|
debugdata_coop = NULL;
|
|
#endif
|
|
|
|
work_array = NULL;
|
|
|
|
/* Queue. */
|
|
Queue_data = NULL;
|
|
Queue_index = NULL;
|
|
use_queues_flag = NULL;
|
|
|
|
per_sample_output_buffers = NULL;
|
|
|
|
per_thread_output_buffer_size = 0;
|
|
hostRayStateArray = NULL;
|
|
PathIteration_times = PATH_ITER_INC_FACTOR;
|
|
#ifdef __WORK_STEALING__
|
|
work_pool_wgs = NULL;
|
|
max_work_groups = 0;
|
|
#endif
|
|
current_clos_max = -1;
|
|
first_tile = true;
|
|
|
|
/* Get device's maximum memory that can be allocated. */
|
|
ciErr = clGetDeviceInfo(cdDevice,
|
|
CL_DEVICE_MAX_MEM_ALLOC_SIZE,
|
|
sizeof(size_t),
|
|
&total_allocatable_memory,
|
|
NULL);
|
|
assert(ciErr == CL_SUCCESS);
|
|
if(platform_name == "AMD Accelerated Parallel Processing") {
|
|
/* This value is tweak-able; AMD platform does not seem to
|
|
* give maximum performance when all of CL_DEVICE_MAX_MEM_ALLOC_SIZE
|
|
* is considered for further computation.
|
|
*/
|
|
total_allocatable_memory /= 2;
|
|
}
|
|
}
|
|
|
|
/* TODO(sergey): Seems really close to load_kernel(),
|
|
* could it be de-duplicated?
|
|
*/
|
|
bool load_split_kernel(string kernel_path,
|
|
string kernel_init_source,
|
|
string clbin,
|
|
string custom_kernel_build_options,
|
|
cl_program *program)
|
|
{
|
|
if(!opencl_version_check())
|
|
return false;
|
|
|
|
clbin = path_user_get(path_join("cache", clbin));
|
|
|
|
/* Path to preprocessed source for debugging. */
|
|
string *debug_src = NULL;
|
|
|
|
/* If exists already, try use it. */
|
|
if(path_exists(clbin) && load_binary(kernel_path,
|
|
clbin,
|
|
custom_kernel_build_options,
|
|
program,
|
|
debug_src)) {
|
|
/* Kernel loaded from binary. */
|
|
}
|
|
else {
|
|
/* If does not exist or loading binary failed, compile kernel. */
|
|
if(!compile_kernel(kernel_path,
|
|
kernel_init_source,
|
|
custom_kernel_build_options,
|
|
program))
|
|
{
|
|
return false;
|
|
}
|
|
/* Save binary for reuse. */
|
|
if(!save_binary(program, clbin)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* Split kernel utility functions. */
|
|
size_t get_tex_size(const char *tex_name)
|
|
{
|
|
cl_mem ptr;
|
|
size_t ret_size = 0;
|
|
MemMap::iterator i = mem_map.find(tex_name);
|
|
if(i != mem_map.end()) {
|
|
ptr = CL_MEM_PTR(i->second);
|
|
ciErr = clGetMemObjectInfo(ptr,
|
|
CL_MEM_SIZE,
|
|
sizeof(ret_size),
|
|
&ret_size,
|
|
NULL);
|
|
assert(ciErr == CL_SUCCESS);
|
|
}
|
|
return ret_size;
|
|
}
|
|
|
|
size_t get_shader_closure_size(int max_closure)
|
|
{
|
|
return (sizeof(ShaderClosure)* max_closure);
|
|
}
|
|
|
|
size_t get_shader_data_size(size_t shader_closure_size)
|
|
{
|
|
/* ShaderData size without accounting for ShaderClosure array. */
|
|
size_t shader_data_size =
|
|
sizeof(ShaderData) - (sizeof(ShaderClosure) * MAX_CLOSURE);
|
|
return (shader_data_size + shader_closure_size);
|
|
}
|
|
|
|
/* Returns size of KernelGlobals structure associated with OpenCL. */
|
|
size_t get_KernelGlobals_size()
|
|
{
|
|
/* Copy dummy KernelGlobals related to OpenCL from kernel_globals.h to
|
|
* fetch its size.
|
|
*/
|
|
typedef struct KernelGlobals {
|
|
ccl_constant KernelData *data;
|
|
#define KERNEL_TEX(type, ttype, name) \
|
|
ccl_global type *name;
|
|
#include "kernel_textures.h"
|
|
#undef KERNEL_TEX
|
|
} KernelGlobals;
|
|
|
|
return sizeof(KernelGlobals);
|
|
}
|
|
|
|
/* Returns size of Structure of arrays implementation of. */
|
|
size_t get_shaderdata_soa_size()
|
|
{
|
|
size_t shader_soa_size = 0;
|
|
|
|
#define SD_VAR(type, what) \
|
|
shader_soa_size += sizeof(void *);
|
|
#define SD_CLOSURE_VAR(type, what, max_closure)
|
|
shader_soa_size += sizeof(void *);
|
|
#include "kernel_shaderdata_vars.h"
|
|
#undef SD_VAR
|
|
#undef SD_CLOSURE_VAR
|
|
|
|
return shader_soa_size;
|
|
}
|
|
|
|
bool load_kernels(const DeviceRequestedFeatures& requested_features)
|
|
{
|
|
/* If it is an interactive render; we ceil clos_max value to a multiple
|
|
* of 5 in order to limit re-compilations.
|
|
*/
|
|
/* TODO(sergey): Decision about this should be done on higher levels. */
|
|
int max_closure = requested_features.max_closure;
|
|
if(!background) {
|
|
assert((max_closure != 0) && "clos_max value is 0" );
|
|
max_closure = (((max_closure - 1) / 5) + 1) * 5;
|
|
/* clos_max value shouldn't be greater than MAX_CLOSURE. */
|
|
max_closure = (max_closure > MAX_CLOSURE) ? MAX_CLOSURE : max_closure;
|
|
if(current_clos_max == max_closure) {
|
|
/* Present kernels have been created with the same closure count
|
|
* build option.
|
|
*/
|
|
return true;
|
|
}
|
|
}
|
|
/* Get Shader, bake and film_convert kernels.
|
|
* It'll also do verification of OpenCL actually initialized.
|
|
*/
|
|
if(!OpenCLDeviceBase::load_kernels(requested_features)) {
|
|
return false;
|
|
}
|
|
|
|
string svm_build_options = "";
|
|
string max_closure_build_option = "";
|
|
string compute_device_type_build_option = "";
|
|
|
|
/* Set svm_build_options. */
|
|
svm_build_options += " -D__NODES_MAX_GROUP__=" +
|
|
string_printf("%d", requested_features.max_nodes_group);
|
|
svm_build_options += " -D__NODES_FEATURES__=" +
|
|
string_printf("%d", requested_features.nodes_features);
|
|
|
|
/* Set max closure build option. */
|
|
max_closure_build_option += string_printf("-D__MAX_CLOSURE__=%d ",
|
|
max_closure);
|
|
|
|
/* Set compute device build option. */
|
|
cl_device_type device_type;
|
|
ciErr = clGetDeviceInfo(cdDevice,
|
|
CL_DEVICE_TYPE,
|
|
sizeof(cl_device_type),
|
|
&device_type,
|
|
NULL);
|
|
assert(ciErr == CL_SUCCESS);
|
|
if(device_type == CL_DEVICE_TYPE_GPU) {
|
|
compute_device_type_build_option = "-D__COMPUTE_DEVICE_GPU__ ";
|
|
}
|
|
|
|
string kernel_path = path_get("kernel");
|
|
string kernel_md5 = path_files_md5_hash(kernel_path);
|
|
string device_md5;
|
|
string custom_kernel_build_options;
|
|
string kernel_init_source;
|
|
string clbin;
|
|
|
|
string common_custom_build_options = "";
|
|
common_custom_build_options += "-D__SPLIT_KERNEL__ ";
|
|
common_custom_build_options += max_closure_build_option;;
|
|
#ifdef __WORK_STEALING__
|
|
common_custom_build_options += "-D__WORK_STEALING__ ";
|
|
#endif
|
|
|
|
#define LOAD_KERNEL(program, name) \
|
|
do { \
|
|
kernel_init_source = "#include \"kernel_" name ".cl\" // " + \
|
|
kernel_md5 + "\n"; \
|
|
custom_kernel_build_options = common_custom_build_options; \
|
|
device_md5 = device_md5_hash(custom_kernel_build_options); \
|
|
clbin = string_printf("cycles_kernel_%s_%s_" name ".clbin", \
|
|
device_md5.c_str(), kernel_md5.c_str()); \
|
|
if(!load_split_kernel(kernel_path, kernel_init_source, clbin, \
|
|
custom_kernel_build_options, &program)) \
|
|
{ \
|
|
return false; \
|
|
} \
|
|
} while(false)
|
|
|
|
/* TODO(sergey): If names are unified we can save some more bits of
|
|
* code here.
|
|
*/
|
|
LOAD_KERNEL(data_init_program, "data_init");
|
|
LOAD_KERNEL(scene_intersect_program, "scene_intersect");
|
|
LOAD_KERNEL(lamp_emission_program, "lamp_emission");
|
|
LOAD_KERNEL(queue_enqueue_program, "queue_enqueue");
|
|
LOAD_KERNEL(background_buffer_update_program, "background_buffer_update");
|
|
LOAD_KERNEL(shader_eval_program, "shader_eval");
|
|
LOAD_KERNEL(holdout_emission_blurring_termination_ao_program,
|
|
"holdout_emission_blurring_pathtermination_ao");
|
|
LOAD_KERNEL(direct_lighting_program, "direct_lighting");
|
|
LOAD_KERNEL(shadow_blocked_program, "shadow_blocked");
|
|
LOAD_KERNEL(next_iteration_setup_program, "next_iteration_setup");
|
|
LOAD_KERNEL(sum_all_radiance_program, "sum_all_radiance");
|
|
|
|
#undef LOAD_KERNEL
|
|
|
|
#define GLUE(a, b) a ## b
|
|
#define FIND_KERNEL(kernel, program, function) \
|
|
do { \
|
|
GLUE(ckPathTraceKernel_, kernel) = \
|
|
clCreateKernel(GLUE(program, _program), \
|
|
"kernel_ocl_path_trace_" function, &ciErr); \
|
|
if(opencl_error(ciErr)) { \
|
|
return false; \
|
|
} \
|
|
} while(false)
|
|
|
|
FIND_KERNEL(data_init, data_init, "data_initialization");
|
|
FIND_KERNEL(scene_intersect, scene_intersect, "scene_intersect");
|
|
FIND_KERNEL(lamp_emission, lamp_emission, "lamp_emission");
|
|
FIND_KERNEL(queue_enqueue, queue_enqueue, "queue_enqueue");
|
|
FIND_KERNEL(background_buffer_update, background_buffer_update, "background_buffer_update");
|
|
FIND_KERNEL(shader_lighting, shader_eval, "shader_evaluation");
|
|
FIND_KERNEL(holdout_emission_blurring_pathtermination_ao,
|
|
holdout_emission_blurring_termination_ao,
|
|
"holdout_emission_blurring_pathtermination_ao");
|
|
FIND_KERNEL(direct_lighting, direct_lighting, "direct_lighting");
|
|
FIND_KERNEL(shadow_blocked_direct_lighting, shadow_blocked, "shadow_blocked_direct_lighting");
|
|
FIND_KERNEL(setup_next_iteration, next_iteration_setup, "setup_next_iteration");
|
|
FIND_KERNEL(sum_all_radiance, sum_all_radiance, "sum_all_radiance");
|
|
#undef FIND_KERNEL
|
|
#undef GLUE
|
|
|
|
current_clos_max = max_closure;
|
|
|
|
return true;
|
|
}
|
|
|
|
~OpenCLDeviceSplitKernel()
|
|
{
|
|
task_pool.stop();
|
|
|
|
/* Release kernels */
|
|
release_kernel_safe(ckPathTraceKernel_data_init);
|
|
release_kernel_safe(ckPathTraceKernel_scene_intersect);
|
|
release_kernel_safe(ckPathTraceKernel_lamp_emission);
|
|
release_kernel_safe(ckPathTraceKernel_queue_enqueue);
|
|
release_kernel_safe(ckPathTraceKernel_background_buffer_update);
|
|
release_kernel_safe(ckPathTraceKernel_shader_lighting);
|
|
release_kernel_safe(ckPathTraceKernel_holdout_emission_blurring_pathtermination_ao);
|
|
release_kernel_safe(ckPathTraceKernel_direct_lighting);
|
|
release_kernel_safe(ckPathTraceKernel_shadow_blocked_direct_lighting);
|
|
release_kernel_safe(ckPathTraceKernel_setup_next_iteration);
|
|
release_kernel_safe(ckPathTraceKernel_sum_all_radiance);
|
|
|
|
/* Release global memory */
|
|
release_mem_object_safe(P_sd);
|
|
release_mem_object_safe(P_sd_DL_shadow);
|
|
release_mem_object_safe(N_sd);
|
|
release_mem_object_safe(N_sd_DL_shadow);
|
|
release_mem_object_safe(Ng_sd);
|
|
release_mem_object_safe(Ng_sd_DL_shadow);
|
|
release_mem_object_safe(I_sd);
|
|
release_mem_object_safe(I_sd_DL_shadow);
|
|
release_mem_object_safe(shader_sd);
|
|
release_mem_object_safe(shader_sd_DL_shadow);
|
|
release_mem_object_safe(flag_sd);
|
|
release_mem_object_safe(flag_sd_DL_shadow);
|
|
release_mem_object_safe(prim_sd);
|
|
release_mem_object_safe(prim_sd_DL_shadow);
|
|
release_mem_object_safe(type_sd);
|
|
release_mem_object_safe(type_sd_DL_shadow);
|
|
release_mem_object_safe(u_sd);
|
|
release_mem_object_safe(u_sd_DL_shadow);
|
|
release_mem_object_safe(v_sd);
|
|
release_mem_object_safe(v_sd_DL_shadow);
|
|
release_mem_object_safe(object_sd);
|
|
release_mem_object_safe(object_sd_DL_shadow);
|
|
release_mem_object_safe(time_sd);
|
|
release_mem_object_safe(time_sd_DL_shadow);
|
|
release_mem_object_safe(ray_length_sd);
|
|
release_mem_object_safe(ray_length_sd_DL_shadow);
|
|
release_mem_object_safe(ray_depth_sd);
|
|
release_mem_object_safe(ray_depth_sd_DL_shadow);
|
|
release_mem_object_safe(transparent_depth_sd);
|
|
release_mem_object_safe(transparent_depth_sd_DL_shadow);
|
|
#ifdef __RAY_DIFFERENTIALS__
|
|
release_mem_object_safe(dP_sd);
|
|
release_mem_object_safe(dP_sd_DL_shadow);
|
|
release_mem_object_safe(dI_sd);
|
|
release_mem_object_safe(dI_sd_DL_shadow);
|
|
release_mem_object_safe(du_sd);
|
|
release_mem_object_safe(du_sd_DL_shadow);
|
|
release_mem_object_safe(dv_sd);
|
|
release_mem_object_safe(dv_sd_DL_shadow);
|
|
#endif
|
|
#ifdef __DPDU__
|
|
release_mem_object_safe(dPdu_sd);
|
|
release_mem_object_safe(dPdu_sd_DL_shadow);
|
|
release_mem_object_safe(dPdv_sd);
|
|
release_mem_object_safe(dPdv_sd_DL_shadow);
|
|
#endif
|
|
release_mem_object_safe(closure_sd);
|
|
release_mem_object_safe(closure_sd_DL_shadow);
|
|
release_mem_object_safe(num_closure_sd);
|
|
release_mem_object_safe(num_closure_sd_DL_shadow);
|
|
release_mem_object_safe(randb_closure_sd);
|
|
release_mem_object_safe(randb_closure_sd_DL_shadow);
|
|
release_mem_object_safe(ray_P_sd);
|
|
release_mem_object_safe(ray_P_sd_DL_shadow);
|
|
release_mem_object_safe(ray_dP_sd);
|
|
release_mem_object_safe(ray_dP_sd_DL_shadow);
|
|
release_mem_object_safe(rng_coop);
|
|
release_mem_object_safe(throughput_coop);
|
|
release_mem_object_safe(L_transparent_coop);
|
|
release_mem_object_safe(PathRadiance_coop);
|
|
release_mem_object_safe(Ray_coop);
|
|
release_mem_object_safe(PathState_coop);
|
|
release_mem_object_safe(Intersection_coop);
|
|
release_mem_object_safe(kgbuffer);
|
|
release_mem_object_safe(sd);
|
|
release_mem_object_safe(sd_DL_shadow);
|
|
release_mem_object_safe(ray_state);
|
|
release_mem_object_safe(AOAlpha_coop);
|
|
release_mem_object_safe(AOBSDF_coop);
|
|
release_mem_object_safe(AOLightRay_coop);
|
|
release_mem_object_safe(BSDFEval_coop);
|
|
release_mem_object_safe(ISLamp_coop);
|
|
release_mem_object_safe(LightRay_coop);
|
|
release_mem_object_safe(Intersection_coop_AO);
|
|
release_mem_object_safe(Intersection_coop_DL);
|
|
#ifdef WITH_CYCLES_DEBUG
|
|
release_mem_object_safe(debugdata_coop);
|
|
#endif
|
|
release_mem_object_safe(use_queues_flag);
|
|
release_mem_object_safe(Queue_data);
|
|
release_mem_object_safe(Queue_index);
|
|
release_mem_object_safe(work_array);
|
|
#ifdef __WORK_STEALING__
|
|
release_mem_object_safe(work_pool_wgs);
|
|
#endif
|
|
release_mem_object_safe(per_sample_output_buffers);
|
|
|
|
/* Release programs */
|
|
release_program_safe(data_init_program);
|
|
release_program_safe(scene_intersect_program);
|
|
release_program_safe(lamp_emission_program);
|
|
release_program_safe(queue_enqueue_program);
|
|
release_program_safe(background_buffer_update_program);
|
|
release_program_safe(shader_eval_program);
|
|
release_program_safe(holdout_emission_blurring_termination_ao_program);
|
|
release_program_safe(direct_lighting_program);
|
|
release_program_safe(shadow_blocked_program);
|
|
release_program_safe(next_iteration_setup_program);
|
|
release_program_safe(sum_all_radiance_program);
|
|
|
|
if(hostRayStateArray != NULL) {
|
|
free(hostRayStateArray);
|
|
}
|
|
}
|
|
|
|
void path_trace(SplitRenderTile& rtile, int2 max_render_feasible_tile_size)
|
|
{
|
|
/* cast arguments to cl types */
|
|
cl_mem d_data = CL_MEM_PTR(const_mem_map["__data"]->device_pointer);
|
|
cl_mem d_buffer = CL_MEM_PTR(rtile.buffer);
|
|
cl_mem d_rng_state = CL_MEM_PTR(rtile.rng_state);
|
|
cl_int d_x = rtile.x;
|
|
cl_int d_y = rtile.y;
|
|
cl_int d_w = rtile.w;
|
|
cl_int d_h = rtile.h;
|
|
cl_int d_offset = rtile.offset;
|
|
cl_int d_stride = rtile.stride;
|
|
|
|
/* Make sure that set render feasible tile size is a multiple of local
|
|
* work size dimensions.
|
|
*/
|
|
assert(max_render_feasible_tile_size.x % SPLIT_KERNEL_LOCAL_SIZE_X == 0);
|
|
assert(max_render_feasible_tile_size.y % SPLIT_KERNEL_LOCAL_SIZE_Y == 0);
|
|
|
|
size_t global_size[2];
|
|
size_t local_size[2] = {SPLIT_KERNEL_LOCAL_SIZE_X,
|
|
SPLIT_KERNEL_LOCAL_SIZE_Y};
|
|
|
|
/* Set the range of samples to be processed for every ray in
|
|
* path-regeneration logic.
|
|
*/
|
|
cl_int start_sample = rtile.start_sample;
|
|
cl_int end_sample = rtile.start_sample + rtile.num_samples;
|
|
cl_int num_samples = rtile.num_samples;
|
|
|
|
#ifdef __WORK_STEALING__
|
|
global_size[0] = (((d_w - 1) / local_size[0]) + 1) * local_size[0];
|
|
global_size[1] = (((d_h - 1) / local_size[1]) + 1) * local_size[1];
|
|
unsigned int num_parallel_samples = 1;
|
|
#else
|
|
global_size[1] = (((d_h - 1) / local_size[1]) + 1) * local_size[1];
|
|
unsigned int num_threads = max_render_feasible_tile_size.x *
|
|
max_render_feasible_tile_size.y;
|
|
unsigned int num_tile_columns_possible = num_threads / global_size[1];
|
|
/* Estimate number of parallel samples that can be
|
|
* processed in parallel.
|
|
*/
|
|
unsigned int num_parallel_samples = min(num_tile_columns_possible / d_w,
|
|
rtile.num_samples);
|
|
/* Wavefront size in AMD is 64.
|
|
* TODO(sergey): What about other platforms?
|
|
*/
|
|
if(num_parallel_samples >= 64) {
|
|
/* TODO(sergey): Could use generic round-up here. */
|
|
num_parallel_samples = (num_parallel_samples / 64) * 64
|
|
}
|
|
assert(num_parallel_samples != 0);
|
|
|
|
global_size[0] = d_w * num_parallel_samples;
|
|
#endif /* __WORK_STEALING__ */
|
|
|
|
assert(global_size[0] * global_size[1] <=
|
|
max_render_feasible_tile_size.x * max_render_feasible_tile_size.y);
|
|
|
|
/* Allocate all required global memory once. */
|
|
if(first_tile) {
|
|
size_t num_global_elements = max_render_feasible_tile_size.x *
|
|
max_render_feasible_tile_size.y;
|
|
/* TODO(sergey): This will actually over-allocate if
|
|
* particular kernel does not support multiclosure.
|
|
*/
|
|
size_t ShaderClosure_size = get_shader_closure_size(current_clos_max);
|
|
|
|
#ifdef __WORK_STEALING__
|
|
/* Calculate max groups */
|
|
size_t max_global_size[2];
|
|
size_t tile_x = max_render_feasible_tile_size.x;
|
|
size_t tile_y = max_render_feasible_tile_size.y;
|
|
max_global_size[0] = (((tile_x - 1) / local_size[0]) + 1) * local_size[0];
|
|
max_global_size[1] = (((tile_y - 1) / local_size[1]) + 1) * local_size[1];
|
|
max_work_groups = (max_global_size[0] * max_global_size[1]) /
|
|
(local_size[0] * local_size[1]);
|
|
/* Allocate work_pool_wgs memory. */
|
|
work_pool_wgs = mem_alloc(max_work_groups * sizeof(unsigned int));
|
|
#endif /* __WORK_STEALING__ */
|
|
|
|
/* Allocate queue_index memory only once. */
|
|
Queue_index = mem_alloc(NUM_QUEUES * sizeof(int));
|
|
use_queues_flag = mem_alloc(sizeof(char));
|
|
kgbuffer = mem_alloc(get_KernelGlobals_size());
|
|
|
|
/* Create global buffers for ShaderData. */
|
|
sd = mem_alloc(get_shaderdata_soa_size());
|
|
sd_DL_shadow = mem_alloc(get_shaderdata_soa_size());
|
|
P_sd = mem_alloc(num_global_elements * sizeof(float3));
|
|
P_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3));
|
|
N_sd = mem_alloc(num_global_elements * sizeof(float3));
|
|
N_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3));
|
|
Ng_sd = mem_alloc(num_global_elements * sizeof(float3));
|
|
Ng_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3));
|
|
I_sd = mem_alloc(num_global_elements * sizeof(float3));
|
|
I_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3));
|
|
shader_sd = mem_alloc(num_global_elements * sizeof(int));
|
|
shader_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int));
|
|
flag_sd = mem_alloc(num_global_elements * sizeof(int));
|
|
flag_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int));
|
|
prim_sd = mem_alloc(num_global_elements * sizeof(int));
|
|
prim_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int));
|
|
type_sd = mem_alloc(num_global_elements * sizeof(int));
|
|
type_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int));
|
|
u_sd = mem_alloc(num_global_elements * sizeof(float));
|
|
u_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float));
|
|
v_sd = mem_alloc(num_global_elements * sizeof(float));
|
|
v_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float));
|
|
object_sd = mem_alloc(num_global_elements * sizeof(int));
|
|
object_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int));
|
|
time_sd = mem_alloc(num_global_elements * sizeof(float));
|
|
time_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float));
|
|
ray_length_sd = mem_alloc(num_global_elements * sizeof(float));
|
|
ray_length_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float));
|
|
ray_depth_sd = mem_alloc(num_global_elements * sizeof(int));
|
|
ray_depth_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int));
|
|
transparent_depth_sd = mem_alloc(num_global_elements * sizeof(int));
|
|
transparent_depth_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int));
|
|
|
|
#ifdef __RAY_DIFFERENTIALS__
|
|
dP_sd = mem_alloc(num_global_elements * sizeof(differential3));
|
|
dP_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential3));
|
|
dI_sd = mem_alloc(num_global_elements * sizeof(differential3));
|
|
dI_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential3));
|
|
du_sd = mem_alloc(num_global_elements * sizeof(differential));
|
|
du_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential));
|
|
dv_sd = mem_alloc(num_global_elements * sizeof(differential));
|
|
dv_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential));
|
|
#endif
|
|
|
|
#ifdef __DPDU__
|
|
dPdu_sd = mem_alloc(num_global_elements * sizeof(float3));
|
|
dPdu_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3));
|
|
dPdv_sd = mem_alloc(num_global_elements * sizeof(float3));
|
|
dPdv_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3));
|
|
#endif
|
|
closure_sd = mem_alloc(num_global_elements * ShaderClosure_size);
|
|
closure_sd_DL_shadow = mem_alloc(num_global_elements * 2 * ShaderClosure_size);
|
|
num_closure_sd = mem_alloc(num_global_elements * sizeof(int));
|
|
num_closure_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(int));
|
|
randb_closure_sd = mem_alloc(num_global_elements * sizeof(float));
|
|
randb_closure_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float));
|
|
ray_P_sd = mem_alloc(num_global_elements * sizeof(float3));
|
|
ray_P_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(float3));
|
|
ray_dP_sd = mem_alloc(num_global_elements * sizeof(differential3));
|
|
ray_dP_sd_DL_shadow = mem_alloc(num_global_elements * 2 * sizeof(differential3));
|
|
|
|
/* Creation of global memory buffers which are shared among
|
|
* the kernels.
|
|
*/
|
|
rng_coop = mem_alloc(num_global_elements * sizeof(RNG));
|
|
throughput_coop = mem_alloc(num_global_elements * sizeof(float3));
|
|
L_transparent_coop = mem_alloc(num_global_elements * sizeof(float));
|
|
PathRadiance_coop = mem_alloc(num_global_elements * sizeof(PathRadiance));
|
|
Ray_coop = mem_alloc(num_global_elements * sizeof(Ray));
|
|
PathState_coop = mem_alloc(num_global_elements * sizeof(PathState));
|
|
Intersection_coop = mem_alloc(num_global_elements * sizeof(Intersection));
|
|
AOAlpha_coop = mem_alloc(num_global_elements * sizeof(float3));
|
|
AOBSDF_coop = mem_alloc(num_global_elements * sizeof(float3));
|
|
AOLightRay_coop = mem_alloc(num_global_elements * sizeof(Ray));
|
|
BSDFEval_coop = mem_alloc(num_global_elements * sizeof(BsdfEval));
|
|
ISLamp_coop = mem_alloc(num_global_elements * sizeof(int));
|
|
LightRay_coop = mem_alloc(num_global_elements * sizeof(Ray));
|
|
Intersection_coop_AO = mem_alloc(num_global_elements * sizeof(Intersection));
|
|
Intersection_coop_DL = mem_alloc(num_global_elements * sizeof(Intersection));
|
|
|
|
#ifdef WITH_CYCLES_DEBUG
|
|
debugdata_coop = mem_alloc(num_global_elements * sizeof(DebugData));
|
|
#endif
|
|
|
|
ray_state = mem_alloc(num_global_elements * sizeof(char));
|
|
|
|
hostRayStateArray = (char *)calloc(num_global_elements, sizeof(char));
|
|
assert(hostRayStateArray != NULL && "Can't create hostRayStateArray memory");
|
|
|
|
Queue_data = mem_alloc(num_global_elements * (NUM_QUEUES * sizeof(int)+sizeof(int)));
|
|
work_array = mem_alloc(num_global_elements * sizeof(unsigned int));
|
|
per_sample_output_buffers = mem_alloc(num_global_elements *
|
|
per_thread_output_buffer_size);
|
|
}
|
|
|
|
cl_int dQueue_size = global_size[0] * global_size[1];
|
|
cl_int total_num_rays = global_size[0] * global_size[1];
|
|
|
|
cl_uint start_arg_index =
|
|
kernel_set_args(ckPathTraceKernel_data_init,
|
|
0,
|
|
kgbuffer,
|
|
sd,
|
|
sd_DL_shadow,
|
|
P_sd,
|
|
P_sd_DL_shadow,
|
|
N_sd,
|
|
N_sd_DL_shadow,
|
|
Ng_sd,
|
|
Ng_sd_DL_shadow,
|
|
I_sd,
|
|
I_sd_DL_shadow,
|
|
shader_sd,
|
|
shader_sd_DL_shadow,
|
|
flag_sd,
|
|
flag_sd_DL_shadow,
|
|
prim_sd,
|
|
prim_sd_DL_shadow,
|
|
type_sd,
|
|
type_sd_DL_shadow,
|
|
u_sd,
|
|
u_sd_DL_shadow,
|
|
v_sd,
|
|
v_sd_DL_shadow,
|
|
object_sd,
|
|
object_sd_DL_shadow,
|
|
time_sd,
|
|
time_sd_DL_shadow,
|
|
ray_length_sd,
|
|
ray_length_sd_DL_shadow,
|
|
ray_depth_sd,
|
|
ray_depth_sd_DL_shadow,
|
|
transparent_depth_sd,
|
|
transparent_depth_sd_DL_shadow);
|
|
|
|
start_arg_index +=
|
|
kernel_set_args(ckPathTraceKernel_data_init,
|
|
start_arg_index,
|
|
#ifdef __RAY_DIFFERENTIALS__
|
|
dP_sd,
|
|
dP_sd_DL_shadow,
|
|
dI_sd,
|
|
dI_sd_DL_shadow,
|
|
du_sd,
|
|
du_sd_DL_shadow,
|
|
dv_sd,
|
|
dv_sd_DL_shadow,
|
|
#endif
|
|
#ifdef __DPDU__
|
|
dPdu_sd,
|
|
dPdu_sd_DL_shadow,
|
|
dPdv_sd,
|
|
dPdv_sd_DL_shadow,
|
|
#endif
|
|
closure_sd,
|
|
closure_sd_DL_shadow,
|
|
num_closure_sd,
|
|
num_closure_sd_DL_shadow,
|
|
randb_closure_sd,
|
|
randb_closure_sd_DL_shadow,
|
|
ray_P_sd,
|
|
ray_P_sd_DL_shadow,
|
|
ray_dP_sd,
|
|
ray_dP_sd_DL_shadow,
|
|
d_data,
|
|
per_sample_output_buffers,
|
|
d_rng_state,
|
|
rng_coop,
|
|
throughput_coop,
|
|
L_transparent_coop,
|
|
PathRadiance_coop,
|
|
Ray_coop,
|
|
PathState_coop,
|
|
ray_state);
|
|
|
|
/* TODO(segrey): Avoid map lookup here. */
|
|
#define KERNEL_TEX(type, ttype, name) \
|
|
set_kernel_arg_mem(ckPathTraceKernel_data_init, &start_arg_index, #name);
|
|
#include "kernel_textures.h"
|
|
#undef KERNEL_TEX
|
|
|
|
start_arg_index +=
|
|
kernel_set_args(ckPathTraceKernel_data_init,
|
|
start_arg_index,
|
|
start_sample,
|
|
d_x,
|
|
d_y,
|
|
d_w,
|
|
d_h,
|
|
d_offset,
|
|
d_stride,
|
|
rtile.rng_state_offset_x,
|
|
rtile.rng_state_offset_y,
|
|
rtile.buffer_rng_state_stride,
|
|
Queue_data,
|
|
Queue_index,
|
|
dQueue_size,
|
|
use_queues_flag,
|
|
work_array,
|
|
#ifdef __WORK_STEALING__
|
|
work_pool_wgs,
|
|
num_samples,
|
|
#endif
|
|
#ifdef WITH_CYCLES_DEBUG
|
|
debugdata_coop,
|
|
#endif
|
|
num_parallel_samples);
|
|
|
|
kernel_set_args(ckPathTraceKernel_scene_intersect,
|
|
0,
|
|
kgbuffer,
|
|
d_data,
|
|
rng_coop,
|
|
Ray_coop,
|
|
PathState_coop,
|
|
Intersection_coop,
|
|
ray_state,
|
|
d_w,
|
|
d_h,
|
|
Queue_data,
|
|
Queue_index,
|
|
dQueue_size,
|
|
use_queues_flag,
|
|
#ifdef WITH_CYCLES_DEBUG
|
|
debugdata_coop,
|
|
#endif
|
|
num_parallel_samples);
|
|
|
|
kernel_set_args(ckPathTraceKernel_lamp_emission,
|
|
0,
|
|
kgbuffer,
|
|
d_data,
|
|
sd,
|
|
throughput_coop,
|
|
PathRadiance_coop,
|
|
Ray_coop,
|
|
PathState_coop,
|
|
Intersection_coop,
|
|
ray_state,
|
|
d_w,
|
|
d_h,
|
|
Queue_data,
|
|
Queue_index,
|
|
dQueue_size,
|
|
use_queues_flag,
|
|
num_parallel_samples);
|
|
|
|
kernel_set_args(ckPathTraceKernel_queue_enqueue,
|
|
0,
|
|
Queue_data,
|
|
Queue_index,
|
|
ray_state,
|
|
dQueue_size);
|
|
|
|
kernel_set_args(ckPathTraceKernel_background_buffer_update,
|
|
0,
|
|
kgbuffer,
|
|
d_data,
|
|
sd,
|
|
per_sample_output_buffers,
|
|
d_rng_state,
|
|
rng_coop,
|
|
throughput_coop,
|
|
PathRadiance_coop,
|
|
Ray_coop,
|
|
PathState_coop,
|
|
L_transparent_coop,
|
|
ray_state,
|
|
d_w,
|
|
d_h,
|
|
d_x,
|
|
d_y,
|
|
d_stride,
|
|
rtile.rng_state_offset_x,
|
|
rtile.rng_state_offset_y,
|
|
rtile.buffer_rng_state_stride,
|
|
work_array,
|
|
Queue_data,
|
|
Queue_index,
|
|
dQueue_size,
|
|
end_sample,
|
|
start_sample,
|
|
#ifdef __WORK_STEALING__
|
|
work_pool_wgs,
|
|
num_samples,
|
|
#endif
|
|
#ifdef WITH_CYCLES_DEBUG
|
|
debugdata_coop,
|
|
#endif
|
|
num_parallel_samples);
|
|
|
|
kernel_set_args(ckPathTraceKernel_shader_lighting,
|
|
0,
|
|
kgbuffer,
|
|
d_data,
|
|
sd,
|
|
rng_coop,
|
|
Ray_coop,
|
|
PathState_coop,
|
|
Intersection_coop,
|
|
ray_state,
|
|
Queue_data,
|
|
Queue_index,
|
|
dQueue_size);
|
|
|
|
kernel_set_args(ckPathTraceKernel_holdout_emission_blurring_pathtermination_ao,
|
|
0,
|
|
kgbuffer,
|
|
d_data,
|
|
sd,
|
|
per_sample_output_buffers,
|
|
rng_coop,
|
|
throughput_coop,
|
|
L_transparent_coop,
|
|
PathRadiance_coop,
|
|
PathState_coop,
|
|
Intersection_coop,
|
|
AOAlpha_coop,
|
|
AOBSDF_coop,
|
|
AOLightRay_coop,
|
|
d_w,
|
|
d_h,
|
|
d_x,
|
|
d_y,
|
|
d_stride,
|
|
ray_state,
|
|
work_array,
|
|
Queue_data,
|
|
Queue_index,
|
|
dQueue_size,
|
|
#ifdef __WORK_STEALING__
|
|
start_sample,
|
|
#endif
|
|
num_parallel_samples);
|
|
|
|
kernel_set_args(ckPathTraceKernel_direct_lighting,
|
|
0,
|
|
kgbuffer,
|
|
d_data,
|
|
sd,
|
|
sd_DL_shadow,
|
|
rng_coop,
|
|
PathState_coop,
|
|
ISLamp_coop,
|
|
LightRay_coop,
|
|
BSDFEval_coop,
|
|
ray_state,
|
|
Queue_data,
|
|
Queue_index,
|
|
dQueue_size);
|
|
|
|
kernel_set_args(ckPathTraceKernel_shadow_blocked_direct_lighting,
|
|
0,
|
|
kgbuffer,
|
|
d_data,
|
|
sd_DL_shadow,
|
|
PathState_coop,
|
|
LightRay_coop,
|
|
AOLightRay_coop,
|
|
Intersection_coop_AO,
|
|
Intersection_coop_DL,
|
|
ray_state,
|
|
Queue_data,
|
|
Queue_index,
|
|
dQueue_size,
|
|
total_num_rays);
|
|
|
|
kernel_set_args(ckPathTraceKernel_setup_next_iteration,
|
|
0,
|
|
kgbuffer,
|
|
d_data,
|
|
sd,
|
|
rng_coop,
|
|
throughput_coop,
|
|
PathRadiance_coop,
|
|
Ray_coop,
|
|
PathState_coop,
|
|
LightRay_coop,
|
|
ISLamp_coop,
|
|
BSDFEval_coop,
|
|
AOLightRay_coop,
|
|
AOBSDF_coop,
|
|
AOAlpha_coop,
|
|
ray_state,
|
|
Queue_data,
|
|
Queue_index,
|
|
dQueue_size,
|
|
use_queues_flag);
|
|
|
|
kernel_set_args(ckPathTraceKernel_sum_all_radiance,
|
|
0,
|
|
d_data,
|
|
d_buffer,
|
|
per_sample_output_buffers,
|
|
num_parallel_samples,
|
|
d_w,
|
|
d_h,
|
|
d_stride,
|
|
rtile.buffer_offset_x,
|
|
rtile.buffer_offset_y,
|
|
rtile.buffer_rng_state_stride,
|
|
start_sample);
|
|
|
|
/* Macro for Enqueuing split kernels. */
|
|
#define GLUE(a, b) a ## b
|
|
#define ENQUEUE_SPLIT_KERNEL(kernelName, globalSize, localSize) \
|
|
opencl_assert(clEnqueueNDRangeKernel(cqCommandQueue, \
|
|
GLUE(ckPathTraceKernel_, \
|
|
kernelName), \
|
|
2, \
|
|
NULL, \
|
|
globalSize, \
|
|
localSize, \
|
|
0, \
|
|
NULL, \
|
|
NULL))
|
|
|
|
/* Enqueue ckPathTraceKernel_data_init kernel. */
|
|
ENQUEUE_SPLIT_KERNEL(data_init, global_size, local_size);
|
|
bool activeRaysAvailable = true;
|
|
|
|
/* Record number of time host intervention has been made */
|
|
unsigned int numHostIntervention = 0;
|
|
unsigned int numNextPathIterTimes = PathIteration_times;
|
|
while(activeRaysAvailable) {
|
|
/* Twice the global work size of other kernels for
|
|
* ckPathTraceKernel_shadow_blocked_direct_lighting. */
|
|
size_t global_size_shadow_blocked[2];
|
|
global_size_shadow_blocked[0] = global_size[0] * 2;
|
|
global_size_shadow_blocked[1] = global_size[1];
|
|
|
|
/* Do path-iteration in host [Enqueue Path-iteration kernels. */
|
|
for(int PathIter = 0; PathIter < PathIteration_times; PathIter++) {
|
|
ENQUEUE_SPLIT_KERNEL(scene_intersect, global_size, local_size);
|
|
ENQUEUE_SPLIT_KERNEL(lamp_emission, global_size, local_size);
|
|
ENQUEUE_SPLIT_KERNEL(queue_enqueue, global_size, local_size);
|
|
ENQUEUE_SPLIT_KERNEL(background_buffer_update, global_size, local_size);
|
|
ENQUEUE_SPLIT_KERNEL(shader_lighting, global_size, local_size);
|
|
ENQUEUE_SPLIT_KERNEL(holdout_emission_blurring_pathtermination_ao, global_size, local_size);
|
|
ENQUEUE_SPLIT_KERNEL(direct_lighting, global_size, local_size);
|
|
ENQUEUE_SPLIT_KERNEL(shadow_blocked_direct_lighting, global_size_shadow_blocked, local_size);
|
|
ENQUEUE_SPLIT_KERNEL(setup_next_iteration, global_size, local_size);
|
|
}
|
|
|
|
/* Read ray-state into Host memory to decide if we should exit
|
|
* path-iteration in host.
|
|
*/
|
|
ciErr = clEnqueueReadBuffer(cqCommandQueue,
|
|
ray_state,
|
|
CL_TRUE,
|
|
0,
|
|
global_size[0] * global_size[1] * sizeof(char),
|
|
hostRayStateArray,
|
|
0,
|
|
NULL,
|
|
NULL);
|
|
assert(ciErr == CL_SUCCESS);
|
|
|
|
activeRaysAvailable = false;
|
|
|
|
for(int rayStateIter = 0;
|
|
rayStateIter < global_size[0] * global_size[1];
|
|
++rayStateIter)
|
|
{
|
|
if(int8_t(hostRayStateArray[rayStateIter]) != RAY_INACTIVE) {
|
|
/* Not all rays are RAY_INACTIVE. */
|
|
activeRaysAvailable = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(activeRaysAvailable) {
|
|
numHostIntervention++;
|
|
PathIteration_times = PATH_ITER_INC_FACTOR;
|
|
/* Host intervention done before all rays become RAY_INACTIVE;
|
|
* Set do more initial iterations for the next tile.
|
|
*/
|
|
numNextPathIterTimes += PATH_ITER_INC_FACTOR;
|
|
}
|
|
}
|
|
|
|
/* Execute SumALLRadiance kernel to accumulate radiance calculated in
|
|
* per_sample_output_buffers into RenderTile's output buffer.
|
|
*/
|
|
size_t sum_all_radiance_local_size[2] = {16, 16};
|
|
size_t sum_all_radiance_global_size[2];
|
|
sum_all_radiance_global_size[0] =
|
|
(((d_w - 1) / sum_all_radiance_local_size[0]) + 1) *
|
|
sum_all_radiance_local_size[0];
|
|
sum_all_radiance_global_size[1] =
|
|
(((d_h - 1) / sum_all_radiance_local_size[1]) + 1) *
|
|
sum_all_radiance_local_size[1];
|
|
ENQUEUE_SPLIT_KERNEL(sum_all_radiance,
|
|
sum_all_radiance_global_size,
|
|
sum_all_radiance_local_size);
|
|
|
|
#undef ENQUEUE_SPLIT_KERNEL
|
|
#undef GLUE
|
|
|
|
if(numHostIntervention == 0) {
|
|
/* This means that we are executing kernel more than required
|
|
* Must avoid this for the next sample/tile.
|
|
*/
|
|
PathIteration_times = ((numNextPathIterTimes - PATH_ITER_INC_FACTOR) <= 0) ?
|
|
PATH_ITER_INC_FACTOR : numNextPathIterTimes - PATH_ITER_INC_FACTOR;
|
|
}
|
|
else {
|
|
/* Number of path-iterations done for this tile is set as
|
|
* Initial path-iteration times for the next tile
|
|
*/
|
|
PathIteration_times = numNextPathIterTimes;
|
|
}
|
|
|
|
first_tile = false;
|
|
}
|
|
|
|
/* Calculates the amount of memory that has to be always
|
|
* allocated in order for the split kernel to function.
|
|
* This memory is tile/scene-property invariant (meaning,
|
|
* the value returned by this function does not depend
|
|
* on the user set tile size or scene properties.
|
|
*/
|
|
size_t get_invariable_mem_allocated()
|
|
{
|
|
size_t total_invariable_mem_allocated = 0;
|
|
size_t KernelGlobals_size = 0;
|
|
size_t ShaderData_SOA_size = 0;
|
|
|
|
KernelGlobals_size = get_KernelGlobals_size();
|
|
ShaderData_SOA_size = get_shaderdata_soa_size();
|
|
|
|
total_invariable_mem_allocated += KernelGlobals_size; /* KernelGlobals size */
|
|
total_invariable_mem_allocated += NUM_QUEUES * sizeof(unsigned int); /* Queue index size */
|
|
total_invariable_mem_allocated += sizeof(char); /* use_queues_flag size */
|
|
total_invariable_mem_allocated += ShaderData_SOA_size; /* sd size */
|
|
total_invariable_mem_allocated += ShaderData_SOA_size; /* sd_DL_shadow size */
|
|
|
|
return total_invariable_mem_allocated;
|
|
}
|
|
|
|
/* Calculate the memory that has-to-be/has-been allocated for
|
|
* the split kernel to function.
|
|
*/
|
|
size_t get_tile_specific_mem_allocated(const int2 tile_size)
|
|
{
|
|
size_t tile_specific_mem_allocated = 0;
|
|
|
|
/* Get required tile info */
|
|
unsigned int user_set_tile_w = tile_size.x;
|
|
unsigned int user_set_tile_h = tile_size.y;
|
|
|
|
#ifdef __WORK_STEALING__
|
|
/* Calculate memory to be allocated for work_pools in
|
|
* case of work_stealing.
|
|
*/
|
|
size_t max_global_size[2];
|
|
size_t max_num_work_pools = 0;
|
|
max_global_size[0] =
|
|
(((user_set_tile_w - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_X;
|
|
max_global_size[1] =
|
|
(((user_set_tile_h - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_Y;
|
|
max_num_work_pools =
|
|
(max_global_size[0] * max_global_size[1]) /
|
|
(SPLIT_KERNEL_LOCAL_SIZE_X * SPLIT_KERNEL_LOCAL_SIZE_Y);
|
|
tile_specific_mem_allocated += max_num_work_pools * sizeof(unsigned int);
|
|
#endif
|
|
|
|
tile_specific_mem_allocated +=
|
|
user_set_tile_w * user_set_tile_h * per_thread_output_buffer_size;
|
|
tile_specific_mem_allocated +=
|
|
user_set_tile_w * user_set_tile_h * sizeof(RNG);
|
|
|
|
return tile_specific_mem_allocated;
|
|
}
|
|
|
|
/* Calculates the texture memories and KernelData (d_data) memory
|
|
* that has been allocated.
|
|
*/
|
|
size_t get_scene_specific_mem_allocated(cl_mem d_data)
|
|
{
|
|
size_t scene_specific_mem_allocated = 0;
|
|
/* Calculate texture memories. */
|
|
#define KERNEL_TEX(type, ttype, name) \
|
|
scene_specific_mem_allocated += get_tex_size(#name);
|
|
#include "kernel_textures.h"
|
|
#undef KERNEL_TEX
|
|
size_t d_data_size;
|
|
ciErr = clGetMemObjectInfo(d_data,
|
|
CL_MEM_SIZE,
|
|
sizeof(d_data_size),
|
|
&d_data_size,
|
|
NULL);
|
|
assert(ciErr == CL_SUCCESS && "Can't get d_data mem object info");
|
|
scene_specific_mem_allocated += d_data_size;
|
|
return scene_specific_mem_allocated;
|
|
}
|
|
|
|
/* Calculate the memory required for one thread in split kernel. */
|
|
size_t get_per_thread_memory()
|
|
{
|
|
size_t shader_closure_size = 0;
|
|
size_t shaderdata_volume = 0;
|
|
shader_closure_size = get_shader_closure_size(current_clos_max);
|
|
/* TODO(sergey): This will actually over-allocate if
|
|
* particular kernel does not support multiclosure.
|
|
*/
|
|
shaderdata_volume = get_shader_data_size(shader_closure_size);
|
|
size_t retval = sizeof(RNG)
|
|
+ sizeof(float3) /* Throughput size */
|
|
+ sizeof(float) /* L transparent size */
|
|
+ sizeof(char) /* Ray state size */
|
|
+ sizeof(unsigned int) /* Work element size */
|
|
+ sizeof(int) /* ISLamp_size */
|
|
+ sizeof(PathRadiance) + sizeof(Ray) + sizeof(PathState)
|
|
+ sizeof(Intersection) /* Overall isect */
|
|
+ sizeof(Intersection) /* Instersection_coop_AO */
|
|
+ sizeof(Intersection) /* Intersection coop DL */
|
|
+ shaderdata_volume /* Overall ShaderData */
|
|
+ (shaderdata_volume * 2) /* ShaderData : DL and shadow */
|
|
+ sizeof(Ray) + sizeof(BsdfEval)
|
|
+ sizeof(float3) /* AOAlpha size */
|
|
+ sizeof(float3) /* AOBSDF size */
|
|
+ sizeof(Ray)
|
|
+ (sizeof(int) * NUM_QUEUES)
|
|
+ per_thread_output_buffer_size;
|
|
return retval;
|
|
}
|
|
|
|
/* Considers the total memory available in the device and
|
|
* and returns the maximum global work size possible.
|
|
*/
|
|
size_t get_feasible_global_work_size(int2 tile_size, cl_mem d_data)
|
|
{
|
|
/* Calculate invariably allocated memory. */
|
|
size_t invariable_mem_allocated = get_invariable_mem_allocated();
|
|
/* Calculate tile specific allocated memory. */
|
|
size_t tile_specific_mem_allocated =
|
|
get_tile_specific_mem_allocated(tile_size);
|
|
/* Calculate scene specific allocated memory. */
|
|
size_t scene_specific_mem_allocated =
|
|
get_scene_specific_mem_allocated(d_data);
|
|
/* Calculate total memory available for the threads in global work size. */
|
|
size_t available_memory = total_allocatable_memory
|
|
- invariable_mem_allocated
|
|
- tile_specific_mem_allocated
|
|
- scene_specific_mem_allocated
|
|
- DATA_ALLOCATION_MEM_FACTOR;
|
|
size_t per_thread_memory_required = get_per_thread_memory();
|
|
return (available_memory / per_thread_memory_required);
|
|
}
|
|
|
|
/* Checks if the device has enough memory to render the whole tile;
|
|
* If not, we should split single tile into multiple tiles of small size
|
|
* and process them all.
|
|
*/
|
|
bool need_to_split_tile(unsigned int d_w,
|
|
unsigned int d_h,
|
|
int2 max_render_feasible_tile_size)
|
|
{
|
|
size_t global_size_estimate[2];
|
|
/* TODO(sergey): Such round-ups are in quite few places, need to replace
|
|
* them with an utility macro.
|
|
*/
|
|
global_size_estimate[0] =
|
|
(((d_w - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_X;
|
|
global_size_estimate[1] =
|
|
(((d_h - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_Y;
|
|
if((global_size_estimate[0] * global_size_estimate[1]) >
|
|
(max_render_feasible_tile_size.x * max_render_feasible_tile_size.y))
|
|
{
|
|
return true;
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Considers the scene properties, global memory available in the device
|
|
* and returns a rectanglular tile dimension (approx the maximum)
|
|
* that should render on split kernel.
|
|
*/
|
|
int2 get_max_render_feasible_tile_size(size_t feasible_global_work_size)
|
|
{
|
|
int2 max_render_feasible_tile_size;
|
|
int square_root_val = (int)sqrt(feasible_global_work_size);
|
|
max_render_feasible_tile_size.x = square_root_val;
|
|
max_render_feasible_tile_size.y = square_root_val;
|
|
/* Ciel round-off max_render_feasible_tile_size. */
|
|
int2 ceil_render_feasible_tile_size;
|
|
ceil_render_feasible_tile_size.x =
|
|
(((max_render_feasible_tile_size.x - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_X;
|
|
ceil_render_feasible_tile_size.y =
|
|
(((max_render_feasible_tile_size.y - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_Y;
|
|
if(ceil_render_feasible_tile_size.x * ceil_render_feasible_tile_size.y <=
|
|
feasible_global_work_size)
|
|
{
|
|
return ceil_render_feasible_tile_size;
|
|
}
|
|
/* Floor round-off max_render_feasible_tile_size. */
|
|
int2 floor_render_feasible_tile_size;
|
|
floor_render_feasible_tile_size.x =
|
|
(max_render_feasible_tile_size.x / SPLIT_KERNEL_LOCAL_SIZE_X) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_X;
|
|
floor_render_feasible_tile_size.y =
|
|
(max_render_feasible_tile_size.y / SPLIT_KERNEL_LOCAL_SIZE_Y) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_Y;
|
|
return floor_render_feasible_tile_size;
|
|
}
|
|
|
|
/* Try splitting the current tile into multiple smaller
|
|
* almost-square-tiles.
|
|
*/
|
|
int2 get_split_tile_size(RenderTile rtile,
|
|
int2 max_render_feasible_tile_size)
|
|
{
|
|
int2 split_tile_size;
|
|
int num_global_threads = max_render_feasible_tile_size.x *
|
|
max_render_feasible_tile_size.y;
|
|
int d_w = rtile.w;
|
|
int d_h = rtile.h;
|
|
/* Ceil round off d_w and d_h */
|
|
d_w = (((d_w - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_X;
|
|
d_h = (((d_h - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_Y;
|
|
while(d_w * d_h > num_global_threads) {
|
|
/* Halve the longer dimension. */
|
|
if(d_w >= d_h) {
|
|
d_w = d_w / 2;
|
|
d_w = (((d_w - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_X;
|
|
}
|
|
else {
|
|
d_h = d_h / 2;
|
|
d_h = (((d_h - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_Y;
|
|
}
|
|
}
|
|
split_tile_size.x = d_w;
|
|
split_tile_size.y = d_h;
|
|
return split_tile_size;
|
|
}
|
|
|
|
/* Splits existing tile into multiple tiles of tile size split_tile_size. */
|
|
vector<SplitRenderTile> split_tiles(RenderTile rtile, int2 split_tile_size)
|
|
{
|
|
vector<SplitRenderTile> to_path_trace_rtile;
|
|
int d_w = rtile.w;
|
|
int d_h = rtile.h;
|
|
int num_tiles_x = (((d_w - 1) / split_tile_size.x) + 1);
|
|
int num_tiles_y = (((d_h - 1) / split_tile_size.y) + 1);
|
|
/* Buffer and rng_state offset calc. */
|
|
size_t offset_index = rtile.offset + (rtile.x + rtile.y * rtile.stride);
|
|
size_t offset_x = offset_index % rtile.stride;
|
|
size_t offset_y = offset_index / rtile.stride;
|
|
/* Resize to_path_trace_rtile. */
|
|
to_path_trace_rtile.resize(num_tiles_x * num_tiles_y);
|
|
for(int tile_iter_y = 0; tile_iter_y < num_tiles_y; tile_iter_y++) {
|
|
for(int tile_iter_x = 0; tile_iter_x < num_tiles_x; tile_iter_x++) {
|
|
int rtile_index = tile_iter_y * num_tiles_x + tile_iter_x;
|
|
to_path_trace_rtile[rtile_index].rng_state_offset_x = offset_x + tile_iter_x * split_tile_size.x;
|
|
to_path_trace_rtile[rtile_index].rng_state_offset_y = offset_y + tile_iter_y * split_tile_size.y;
|
|
to_path_trace_rtile[rtile_index].buffer_offset_x = offset_x + tile_iter_x * split_tile_size.x;
|
|
to_path_trace_rtile[rtile_index].buffer_offset_y = offset_y + tile_iter_y * split_tile_size.y;
|
|
to_path_trace_rtile[rtile_index].start_sample = rtile.start_sample;
|
|
to_path_trace_rtile[rtile_index].num_samples = rtile.num_samples;
|
|
to_path_trace_rtile[rtile_index].sample = rtile.sample;
|
|
to_path_trace_rtile[rtile_index].resolution = rtile.resolution;
|
|
to_path_trace_rtile[rtile_index].offset = rtile.offset;
|
|
to_path_trace_rtile[rtile_index].buffers = rtile.buffers;
|
|
to_path_trace_rtile[rtile_index].buffer = rtile.buffer;
|
|
to_path_trace_rtile[rtile_index].rng_state = rtile.rng_state;
|
|
to_path_trace_rtile[rtile_index].x = rtile.x + (tile_iter_x * split_tile_size.x);
|
|
to_path_trace_rtile[rtile_index].y = rtile.y + (tile_iter_y * split_tile_size.y);
|
|
to_path_trace_rtile[rtile_index].buffer_rng_state_stride = rtile.stride;
|
|
/* Fill width and height of the new render tile. */
|
|
to_path_trace_rtile[rtile_index].w = (tile_iter_x == (num_tiles_x - 1)) ?
|
|
(d_w - (tile_iter_x * split_tile_size.x)) /* Border tile */
|
|
: split_tile_size.x;
|
|
to_path_trace_rtile[rtile_index].h = (tile_iter_y == (num_tiles_y - 1)) ?
|
|
(d_h - (tile_iter_y * split_tile_size.y)) /* Border tile */
|
|
: split_tile_size.y;
|
|
to_path_trace_rtile[rtile_index].stride = to_path_trace_rtile[rtile_index].w;
|
|
}
|
|
}
|
|
return to_path_trace_rtile;
|
|
}
|
|
|
|
void thread_run(DeviceTask *task)
|
|
{
|
|
if(task->type == DeviceTask::FILM_CONVERT) {
|
|
film_convert(*task, task->buffer, task->rgba_byte, task->rgba_half);
|
|
}
|
|
else if(task->type == DeviceTask::SHADER) {
|
|
shader(*task);
|
|
}
|
|
else if(task->type == DeviceTask::PATH_TRACE) {
|
|
RenderTile tile;
|
|
bool initialize_data_and_check_render_feasibility = false;
|
|
bool need_to_split_tiles_further = false;
|
|
int2 max_render_feasible_tile_size;
|
|
size_t feasible_global_work_size;
|
|
const int2 tile_size = task->requested_tile_size;
|
|
/* Keep rendering tiles until done. */
|
|
while(task->acquire_tile(this, tile)) {
|
|
if(!initialize_data_and_check_render_feasibility) {
|
|
/* Initialize data. */
|
|
/* Calculate per_thread_output_buffer_size. */
|
|
size_t output_buffer_size = 0;
|
|
ciErr = clGetMemObjectInfo((cl_mem)tile.buffer,
|
|
CL_MEM_SIZE,
|
|
sizeof(output_buffer_size),
|
|
&output_buffer_size,
|
|
NULL);
|
|
assert(ciErr == CL_SUCCESS && "Can't get tile.buffer mem object info");
|
|
/* This value is different when running on AMD and NV. */
|
|
if(background) {
|
|
/* In offline render the number of buffer elements
|
|
* associated with tile.buffer is the current tile size.
|
|
*/
|
|
per_thread_output_buffer_size =
|
|
output_buffer_size / (tile.w * tile.h);
|
|
}
|
|
else {
|
|
/* interactive rendering, unlike offline render, the number of buffer elements
|
|
* associated with tile.buffer is the entire viewport size.
|
|
*/
|
|
per_thread_output_buffer_size =
|
|
output_buffer_size / (tile.buffers->params.width *
|
|
tile.buffers->params.height);
|
|
}
|
|
/* Check render feasibility. */
|
|
feasible_global_work_size = get_feasible_global_work_size(
|
|
tile_size,
|
|
CL_MEM_PTR(const_mem_map["__data"]->device_pointer));
|
|
max_render_feasible_tile_size =
|
|
get_max_render_feasible_tile_size(
|
|
feasible_global_work_size);
|
|
need_to_split_tiles_further =
|
|
need_to_split_tile(tile_size.x,
|
|
tile_size.y,
|
|
max_render_feasible_tile_size);
|
|
initialize_data_and_check_render_feasibility = true;
|
|
}
|
|
if(need_to_split_tiles_further) {
|
|
int2 split_tile_size =
|
|
get_split_tile_size(tile,
|
|
max_render_feasible_tile_size);
|
|
vector<SplitRenderTile> to_path_trace_render_tiles =
|
|
split_tiles(tile, split_tile_size);
|
|
/* Print message to console */
|
|
if(background && (to_path_trace_render_tiles.size() > 1)) {
|
|
fprintf(stderr, "Message : Tiles need to be split "
|
|
"further inside path trace (due to insufficient "
|
|
"device-global-memory for split kernel to "
|
|
"function) \n"
|
|
"The current tile of dimensions %dx%d is split "
|
|
"into tiles of dimension %dx%d for render \n",
|
|
tile.w, tile.h,
|
|
split_tile_size.x,
|
|
split_tile_size.y);
|
|
}
|
|
/* Process all split tiles. */
|
|
for(int tile_iter = 0;
|
|
tile_iter < to_path_trace_render_tiles.size();
|
|
++tile_iter)
|
|
{
|
|
path_trace(to_path_trace_render_tiles[tile_iter],
|
|
max_render_feasible_tile_size);
|
|
}
|
|
}
|
|
else {
|
|
/* No splitting required; process the entire tile at once. */
|
|
/* Render feasible tile size is user-set-tile-size itself. */
|
|
max_render_feasible_tile_size.x =
|
|
(((tile_size.x - 1) / SPLIT_KERNEL_LOCAL_SIZE_X) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_X;
|
|
max_render_feasible_tile_size.y =
|
|
(((tile_size.y - 1) / SPLIT_KERNEL_LOCAL_SIZE_Y) + 1) *
|
|
SPLIT_KERNEL_LOCAL_SIZE_Y;
|
|
/* buffer_rng_state_stride is stride itself. */
|
|
SplitRenderTile split_tile(tile);
|
|
split_tile.buffer_rng_state_stride = tile.stride;
|
|
path_trace(split_tile, max_render_feasible_tile_size);
|
|
}
|
|
tile.sample = tile.start_sample + tile.num_samples;
|
|
|
|
/* Complete kernel execution before release tile. */
|
|
/* This helps in multi-device render;
|
|
* The device that reaches the critical-section function
|
|
* release_tile waits (stalling other devices from entering
|
|
* release_tile) for all kernels to complete. If device1 (a
|
|
* slow-render device) reaches release_tile first then it would
|
|
* stall device2 (a fast-render device) from proceeding to render
|
|
* next tile.
|
|
*/
|
|
clFinish(cqCommandQueue);
|
|
|
|
task->release_tile(tile);
|
|
}
|
|
}
|
|
}
|
|
|
|
protected:
|
|
cl_mem mem_alloc(size_t bufsize, cl_mem_flags mem_flag = CL_MEM_READ_WRITE)
|
|
{
|
|
cl_mem ptr;
|
|
ptr = clCreateBuffer(cxContext, mem_flag, bufsize, NULL, &ciErr);
|
|
if(opencl_error(ciErr)) {
|
|
assert(0);
|
|
}
|
|
return ptr;
|
|
}
|
|
};
|
|
|
|
/* Returns true in case of successful detection of platform and device type,
|
|
* else returns false.
|
|
*/
|
|
static bool get_platform_and_devicetype(const DeviceInfo info,
|
|
string &platform_name,
|
|
cl_device_type &device_type)
|
|
{
|
|
cl_platform_id platform_id;
|
|
cl_device_id device_id;
|
|
cl_uint num_platforms;
|
|
cl_int ciErr;
|
|
|
|
/* TODO(sergey): Use some generic error print helper function/ */
|
|
ciErr = clGetPlatformIDs(0, NULL, &num_platforms);
|
|
if(ciErr != CL_SUCCESS) {
|
|
fprintf(stderr, "Can't getPlatformIds. file - %s, line - %d\n", __FILE__, __LINE__);
|
|
return false;
|
|
}
|
|
|
|
if(num_platforms == 0) {
|
|
fprintf(stderr, "No OpenCL platforms found. file - %s, line - %d\n", __FILE__, __LINE__);
|
|
return false;
|
|
}
|
|
|
|
vector<cl_platform_id> platforms(num_platforms, NULL);
|
|
|
|
ciErr = clGetPlatformIDs(num_platforms, &platforms[0], NULL);
|
|
if(ciErr != CL_SUCCESS) {
|
|
fprintf(stderr, "Can't getPlatformIds. file - %s, line - %d\n", __FILE__, __LINE__);
|
|
return false;
|
|
}
|
|
|
|
int num_base = 0;
|
|
int total_devices = 0;
|
|
|
|
for(int platform = 0; platform < num_platforms; platform++) {
|
|
cl_uint num_devices;
|
|
|
|
ciErr = clGetDeviceIDs(platforms[platform], opencl_device_type(), 0, NULL, &num_devices);
|
|
if(ciErr != CL_SUCCESS) {
|
|
fprintf(stderr, "Can't getDeviceIDs. file - %s, line - %d\n", __FILE__, __LINE__);
|
|
return false;
|
|
}
|
|
|
|
total_devices += num_devices;
|
|
|
|
if(info.num - num_base >= num_devices) {
|
|
/* num doesn't refer to a device in this platform */
|
|
num_base += num_devices;
|
|
continue;
|
|
}
|
|
|
|
/* device is in this platform */
|
|
platform_id = platforms[platform];
|
|
|
|
/* get devices */
|
|
vector<cl_device_id> device_ids(num_devices, NULL);
|
|
|
|
ciErr = clGetDeviceIDs(platform_id, opencl_device_type(), num_devices, &device_ids[0], NULL);
|
|
if(ciErr != CL_SUCCESS) {
|
|
fprintf(stderr, "Can't getDeviceIDs. file - %s, line - %d\n", __FILE__, __LINE__);
|
|
return false;
|
|
}
|
|
|
|
device_id = device_ids[info.num - num_base];
|
|
|
|
char name[256];
|
|
ciErr = clGetPlatformInfo(platform_id, CL_PLATFORM_NAME, sizeof(name), &name, NULL);
|
|
if(ciErr != CL_SUCCESS) {
|
|
fprintf(stderr, "Can't getPlatformIDs. file - %s, line - %d \n", __FILE__, __LINE__);
|
|
return false;
|
|
}
|
|
platform_name = name;
|
|
|
|
ciErr = clGetDeviceInfo(device_id, CL_DEVICE_TYPE, sizeof(cl_device_type), &device_type, NULL);
|
|
if(ciErr != CL_SUCCESS) {
|
|
fprintf(stderr, "Can't getDeviceInfo. file - %s, line - %d \n", __FILE__, __LINE__);
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if(total_devices == 0) {
|
|
fprintf(stderr, "No devices found. file - %s, line - %d \n", __FILE__, __LINE__);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
Device *device_opencl_create(DeviceInfo& info, Stats &stats, bool background)
|
|
{
|
|
string platform_name;
|
|
cl_device_type device_type;
|
|
if(get_platform_and_devicetype(info, platform_name, device_type)) {
|
|
const bool force_split_kernel =
|
|
getenv("CYCLES_OPENCL_SPLIT_KERNEL_TEST") != NULL;
|
|
/* TODO(sergey): Replace string lookups with more enum-like API,
|
|
* similar to device/venfdor checks blender's gpu.
|
|
*/
|
|
if(force_split_kernel ||
|
|
(platform_name == "AMD Accelerated Parallel Processing" &&
|
|
device_type == CL_DEVICE_TYPE_GPU))
|
|
{
|
|
/* If the device is an AMD GPU, take split kernel path. */
|
|
VLOG(1) << "Using split kernel";
|
|
return new OpenCLDeviceSplitKernel(info, stats, background);
|
|
} else {
|
|
/* For any other device, take megakernel path. */
|
|
VLOG(1) << "Using megekernel";
|
|
return new OpenCLDeviceMegaKernel(info, stats, background);
|
|
}
|
|
} else {
|
|
/* If we can't retrieve platform and device type information for some
|
|
* reason, we default to megakernel path.
|
|
*/
|
|
VLOG(1) << "Failed to rertieve platform or device, using megakernel";
|
|
return new OpenCLDeviceMegaKernel(info, stats, background);
|
|
}
|
|
}
|
|
|
|
bool device_opencl_init(void)
|
|
{
|
|
static bool initialized = false;
|
|
static bool result = false;
|
|
|
|
if(initialized)
|
|
return result;
|
|
|
|
initialized = true;
|
|
|
|
result = clewInit() == CLEW_SUCCESS;
|
|
|
|
return result;
|
|
}
|
|
|
|
void device_opencl_info(vector<DeviceInfo>& devices)
|
|
{
|
|
vector<cl_device_id> device_ids;
|
|
cl_uint num_devices = 0;
|
|
vector<cl_platform_id> platform_ids;
|
|
cl_uint num_platforms = 0;
|
|
|
|
/* get devices */
|
|
if(clGetPlatformIDs(0, NULL, &num_platforms) != CL_SUCCESS || num_platforms == 0)
|
|
return;
|
|
|
|
platform_ids.resize(num_platforms);
|
|
|
|
if(clGetPlatformIDs(num_platforms, &platform_ids[0], NULL) != CL_SUCCESS)
|
|
return;
|
|
|
|
/* devices are numbered consecutively across platforms */
|
|
int num_base = 0;
|
|
|
|
const bool force_all_platforms =
|
|
(getenv("CYCLES_OPENCL_TEST") != NULL) ||
|
|
(getenv("CYCLES_OPENCL_SPLIT_KERNEL_TEST")) != NULL;
|
|
|
|
for(int platform = 0; platform < num_platforms; platform++, num_base += num_devices) {
|
|
num_devices = 0;
|
|
if(clGetDeviceIDs(platform_ids[platform], opencl_device_type(), 0, NULL, &num_devices) != CL_SUCCESS || num_devices == 0)
|
|
continue;
|
|
|
|
device_ids.resize(num_devices);
|
|
|
|
if(clGetDeviceIDs(platform_ids[platform], opencl_device_type(), num_devices, &device_ids[0], NULL) != CL_SUCCESS)
|
|
continue;
|
|
|
|
char pname[256];
|
|
clGetPlatformInfo(platform_ids[platform], CL_PLATFORM_NAME, sizeof(pname), &pname, NULL);
|
|
string platform_name = pname;
|
|
|
|
/* add devices */
|
|
for(int num = 0; num < num_devices; num++) {
|
|
cl_device_id device_id = device_ids[num];
|
|
char name[1024] = "\0";
|
|
|
|
cl_device_type device_type;
|
|
clGetDeviceInfo(device_id, CL_DEVICE_TYPE, sizeof(cl_device_type), &device_type, NULL);
|
|
|
|
/* TODO(sergey): Make it an utility function to check whitelisted devices. */
|
|
if(!(force_all_platforms ||
|
|
(platform_name == "AMD Accelerated Parallel Processing" &&
|
|
device_type == CL_DEVICE_TYPE_GPU)))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if(clGetDeviceInfo(device_id, CL_DEVICE_NAME, sizeof(name), &name, NULL) != CL_SUCCESS)
|
|
continue;
|
|
|
|
DeviceInfo info;
|
|
|
|
info.type = DEVICE_OPENCL;
|
|
info.description = string(name);
|
|
info.num = num_base + num;
|
|
info.id = string_printf("OPENCL_%d", info.num);
|
|
/* we don't know if it's used for display, but assume it is */
|
|
info.display_device = true;
|
|
info.advanced_shading = opencl_kernel_use_advanced_shading(platform_name);
|
|
info.pack_images = true;
|
|
|
|
devices.push_back(info);
|
|
}
|
|
}
|
|
}
|
|
|
|
string device_opencl_capabilities(void)
|
|
{
|
|
/* TODO(sergey): Not implemented yet. */
|
|
return "";
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|
|
|
|
#endif /* WITH_OPENCL */
|