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Diffstat (limited to 'intern/cycles/device/device_split_kernel.cpp')
| -rw-r--r-- | intern/cycles/device/device_split_kernel.cpp | 389 |
1 files changed, 0 insertions, 389 deletions
diff --git a/intern/cycles/device/device_split_kernel.cpp b/intern/cycles/device/device_split_kernel.cpp deleted file mode 100644 index 9889f688aaa..00000000000 --- a/intern/cycles/device/device_split_kernel.cpp +++ /dev/null @@ -1,389 +0,0 @@ -/* - * Copyright 2011-2016 Blender Foundation - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "device/device_split_kernel.h" - -#include "kernel/kernel_types.h" -#include "kernel/split/kernel_split_data_types.h" - -#include "util/util_logging.h" -#include "util/util_time.h" - -CCL_NAMESPACE_BEGIN - -static const double alpha = 0.1; /* alpha for rolling average */ - -DeviceSplitKernel::DeviceSplitKernel(Device *device) - : device(device), - split_data(device, "split_data"), - ray_state(device, "ray_state", MEM_READ_WRITE), - queue_index(device, "queue_index"), - use_queues_flag(device, "use_queues_flag"), - work_pool_wgs(device, "work_pool_wgs"), - kernel_data_initialized(false) -{ - avg_time_per_sample = 0.0; - - kernel_path_init = NULL; - kernel_scene_intersect = NULL; - kernel_lamp_emission = NULL; - kernel_do_volume = NULL; - kernel_queue_enqueue = NULL; - kernel_indirect_background = NULL; - kernel_shader_setup = NULL; - kernel_shader_sort = NULL; - kernel_shader_eval = NULL; - kernel_holdout_emission_blurring_pathtermination_ao = NULL; - kernel_subsurface_scatter = NULL; - kernel_direct_lighting = NULL; - kernel_shadow_blocked_ao = NULL; - kernel_shadow_blocked_dl = NULL; - kernel_enqueue_inactive = NULL; - kernel_next_iteration_setup = NULL; - kernel_indirect_subsurface = NULL; - kernel_buffer_update = NULL; - kernel_adaptive_stopping = NULL; - kernel_adaptive_filter_x = NULL; - kernel_adaptive_filter_y = NULL; - kernel_adaptive_adjust_samples = NULL; -} - -DeviceSplitKernel::~DeviceSplitKernel() -{ - split_data.free(); - ray_state.free(); - use_queues_flag.free(); - queue_index.free(); - work_pool_wgs.free(); - - delete kernel_path_init; - delete kernel_scene_intersect; - delete kernel_lamp_emission; - delete kernel_do_volume; - delete kernel_queue_enqueue; - delete kernel_indirect_background; - delete kernel_shader_setup; - delete kernel_shader_sort; - delete kernel_shader_eval; - delete kernel_holdout_emission_blurring_pathtermination_ao; - delete kernel_subsurface_scatter; - delete kernel_direct_lighting; - delete kernel_shadow_blocked_ao; - delete kernel_shadow_blocked_dl; - delete kernel_enqueue_inactive; - delete kernel_next_iteration_setup; - delete kernel_indirect_subsurface; - delete kernel_buffer_update; - delete kernel_adaptive_stopping; - delete kernel_adaptive_filter_x; - delete kernel_adaptive_filter_y; - delete kernel_adaptive_adjust_samples; -} - -bool DeviceSplitKernel::load_kernels(const DeviceRequestedFeatures &requested_features) -{ -#define LOAD_KERNEL(name) \ - kernel_##name = get_split_kernel_function(#name, requested_features); \ - if (!kernel_##name) { \ - device->set_error(string("Split kernel error: failed to load kernel_") + #name); \ - return false; \ - } - - LOAD_KERNEL(path_init); - LOAD_KERNEL(scene_intersect); - LOAD_KERNEL(lamp_emission); - if (requested_features.use_volume) { - LOAD_KERNEL(do_volume); - } - LOAD_KERNEL(queue_enqueue); - LOAD_KERNEL(indirect_background); - LOAD_KERNEL(shader_setup); - LOAD_KERNEL(shader_sort); - LOAD_KERNEL(shader_eval); - LOAD_KERNEL(holdout_emission_blurring_pathtermination_ao); - LOAD_KERNEL(subsurface_scatter); - LOAD_KERNEL(direct_lighting); - LOAD_KERNEL(shadow_blocked_ao); - LOAD_KERNEL(shadow_blocked_dl); - LOAD_KERNEL(enqueue_inactive); - LOAD_KERNEL(next_iteration_setup); - LOAD_KERNEL(indirect_subsurface); - LOAD_KERNEL(buffer_update); - LOAD_KERNEL(adaptive_stopping); - LOAD_KERNEL(adaptive_filter_x); - LOAD_KERNEL(adaptive_filter_y); - LOAD_KERNEL(adaptive_adjust_samples); - -#undef LOAD_KERNEL - - /* Re-initialiaze kernel-dependent data when kernels change. */ - kernel_data_initialized = false; - - return true; -} - -size_t DeviceSplitKernel::max_elements_for_max_buffer_size(device_memory &kg, - device_memory &data, - uint64_t max_buffer_size) -{ - uint64_t size_per_element = state_buffer_size(kg, data, 1024) / 1024; - VLOG(1) << "Split state element size: " << string_human_readable_number(size_per_element) - << " bytes. (" << string_human_readable_size(size_per_element) << ")."; - return max_buffer_size / size_per_element; -} - -bool DeviceSplitKernel::path_trace(DeviceTask &task, - RenderTile &tile, - device_memory &kgbuffer, - device_memory &kernel_data) -{ - if (device->have_error()) { - return false; - } - - /* Allocate all required global memory once. */ - if (!kernel_data_initialized) { - kernel_data_initialized = true; - - /* Set local size */ - int2 lsize = split_kernel_local_size(); - local_size[0] = lsize[0]; - local_size[1] = lsize[1]; - - /* Set global size */ - int2 gsize = split_kernel_global_size(kgbuffer, kernel_data, task); - - /* Make sure that set work size is a multiple of local - * work size dimensions. - */ - global_size[0] = round_up(gsize[0], local_size[0]); - global_size[1] = round_up(gsize[1], local_size[1]); - - int num_global_elements = global_size[0] * global_size[1]; - assert(num_global_elements % WORK_POOL_SIZE == 0); - - /* Calculate max groups */ - - /* Denotes the maximum work groups possible w.r.t. current requested tile size. */ - unsigned int work_pool_size = (device->info.type == DEVICE_CPU) ? WORK_POOL_SIZE_CPU : - WORK_POOL_SIZE_GPU; - unsigned int max_work_groups = num_global_elements / work_pool_size + 1; - - /* Allocate work_pool_wgs memory. */ - work_pool_wgs.alloc_to_device(max_work_groups); - queue_index.alloc_to_device(NUM_QUEUES); - use_queues_flag.alloc_to_device(1); - split_data.alloc_to_device(state_buffer_size(kgbuffer, kernel_data, num_global_elements)); - ray_state.alloc(num_global_elements); - } - - /* Number of elements in the global state buffer */ - int num_global_elements = global_size[0] * global_size[1]; - -#define ENQUEUE_SPLIT_KERNEL(name, global_size, local_size) \ - if (device->have_error()) { \ - return false; \ - } \ - if (!kernel_##name->enqueue( \ - KernelDimensions(global_size, local_size), kgbuffer, kernel_data)) { \ - return false; \ - } - - tile.sample = tile.start_sample; - - /* for exponential increase between tile updates */ - int time_multiplier = 1; - - while (tile.sample < tile.start_sample + tile.num_samples) { - /* to keep track of how long it takes to run a number of samples */ - double start_time = time_dt(); - - /* initial guess to start rolling average */ - const int initial_num_samples = 1; - /* approx number of samples per second */ - const int samples_per_second = (avg_time_per_sample > 0.0) ? - int(double(time_multiplier) / avg_time_per_sample) + 1 : - initial_num_samples; - - RenderTile subtile = tile; - subtile.start_sample = tile.sample; - subtile.num_samples = samples_per_second; - - if (task.adaptive_sampling.use) { - subtile.num_samples = task.adaptive_sampling.align_samples(subtile.start_sample, - subtile.num_samples); - } - - /* Don't go beyond requested number of samples. */ - subtile.num_samples = min(subtile.num_samples, - tile.start_sample + tile.num_samples - tile.sample); - - if (device->have_error()) { - return false; - } - - /* reset state memory here as global size for data_init - * kernel might not be large enough to do in kernel - */ - work_pool_wgs.zero_to_device(); - split_data.zero_to_device(); - ray_state.zero_to_device(); - - if (!enqueue_split_kernel_data_init(KernelDimensions(global_size, local_size), - subtile, - num_global_elements, - kgbuffer, - kernel_data, - split_data, - ray_state, - queue_index, - use_queues_flag, - work_pool_wgs)) { - return false; - } - - ENQUEUE_SPLIT_KERNEL(path_init, global_size, local_size); - - bool activeRaysAvailable = true; - double cancel_time = DBL_MAX; - - while (activeRaysAvailable) { - /* Do path-iteration in host [Enqueue Path-iteration kernels. */ - for (int PathIter = 0; PathIter < 16; PathIter++) { - ENQUEUE_SPLIT_KERNEL(scene_intersect, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(lamp_emission, global_size, local_size); - if (kernel_do_volume) { - ENQUEUE_SPLIT_KERNEL(do_volume, global_size, local_size); - } - ENQUEUE_SPLIT_KERNEL(queue_enqueue, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(indirect_background, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(shader_setup, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(shader_sort, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(shader_eval, global_size, local_size); - ENQUEUE_SPLIT_KERNEL( - holdout_emission_blurring_pathtermination_ao, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(subsurface_scatter, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(queue_enqueue, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(direct_lighting, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(shadow_blocked_ao, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(shadow_blocked_dl, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(enqueue_inactive, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(next_iteration_setup, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(indirect_subsurface, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(queue_enqueue, global_size, local_size); - ENQUEUE_SPLIT_KERNEL(buffer_update, global_size, local_size); - - if (task.get_cancel() && cancel_time == DBL_MAX) { - /* Wait up to twice as many seconds for current samples to finish - * to avoid artifacts in render result from ending too soon. - */ - cancel_time = time_dt() + 2.0 * time_multiplier; - } - - if (time_dt() > cancel_time) { - return true; - } - } - - /* Decide if we should exit path-iteration in host. */ - ray_state.copy_from_device(0, global_size[0] * global_size[1], 1); - - activeRaysAvailable = false; - - for (int rayStateIter = 0; rayStateIter < global_size[0] * global_size[1]; ++rayStateIter) { - if (!IS_STATE(ray_state.data(), rayStateIter, RAY_INACTIVE)) { - if (IS_STATE(ray_state.data(), rayStateIter, RAY_INVALID)) { - /* Something went wrong, abort to avoid looping endlessly. */ - device->set_error("Split kernel error: invalid ray state"); - return false; - } - - /* Not all rays are RAY_INACTIVE. */ - activeRaysAvailable = true; - break; - } - } - - if (time_dt() > cancel_time) { - return true; - } - } - - int filter_sample = tile.sample + subtile.num_samples - 1; - if (task.adaptive_sampling.use && task.adaptive_sampling.need_filter(filter_sample)) { - size_t buffer_size[2]; - buffer_size[0] = round_up(tile.w, local_size[0]); - buffer_size[1] = round_up(tile.h, local_size[1]); - kernel_adaptive_stopping->enqueue( - KernelDimensions(buffer_size, local_size), kgbuffer, kernel_data); - buffer_size[0] = round_up(tile.h, local_size[0]); - buffer_size[1] = round_up(1, local_size[1]); - kernel_adaptive_filter_x->enqueue( - KernelDimensions(buffer_size, local_size), kgbuffer, kernel_data); - buffer_size[0] = round_up(tile.w, local_size[0]); - buffer_size[1] = round_up(1, local_size[1]); - kernel_adaptive_filter_y->enqueue( - KernelDimensions(buffer_size, local_size), kgbuffer, kernel_data); - } - - double time_per_sample = ((time_dt() - start_time) / subtile.num_samples); - - if (avg_time_per_sample == 0.0) { - /* start rolling average */ - avg_time_per_sample = time_per_sample; - } - else { - avg_time_per_sample = alpha * time_per_sample + (1.0 - alpha) * avg_time_per_sample; - } - -#undef ENQUEUE_SPLIT_KERNEL - - tile.sample += subtile.num_samples; - task.update_progress(&tile, tile.w * tile.h * subtile.num_samples); - - time_multiplier = min(time_multiplier << 1, 10); - - if (task.get_cancel()) { - return true; - } - } - - if (task.adaptive_sampling.use) { - /* Reset the start samples. */ - RenderTile subtile = tile; - subtile.start_sample = tile.start_sample; - subtile.num_samples = tile.sample - tile.start_sample; - enqueue_split_kernel_data_init(KernelDimensions(global_size, local_size), - subtile, - num_global_elements, - kgbuffer, - kernel_data, - split_data, - ray_state, - queue_index, - use_queues_flag, - work_pool_wgs); - size_t buffer_size[2]; - buffer_size[0] = round_up(tile.w, local_size[0]); - buffer_size[1] = round_up(tile.h, local_size[1]); - kernel_adaptive_adjust_samples->enqueue( - KernelDimensions(buffer_size, local_size), kgbuffer, kernel_data); - } - - return true; -} - -CCL_NAMESPACE_END |