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562 lines
15 KiB
562 lines
15 KiB
/*
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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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#include <sstream>
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#include <stdlib.h>
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#include "device/device.h"
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#include "device/device_intern.h"
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#include "device/device_network.h"
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#include "render/buffers.h"
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#include "util/util_foreach.h"
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#include "util/util_list.h"
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#include "util/util_logging.h"
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#include "util/util_map.h"
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#include "util/util_time.h"
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CCL_NAMESPACE_BEGIN
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class MultiDevice : public Device {
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public:
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struct SubDevice {
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explicit SubDevice(Device *device_) : device(device_)
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{
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}
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Device *device;
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map<device_ptr, device_ptr> ptr_map;
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};
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list<SubDevice> devices, denoising_devices;
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device_ptr unique_key;
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MultiDevice(DeviceInfo &info, Stats &stats, Profiler &profiler, bool background_)
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: Device(info, stats, profiler, background_), unique_key(1)
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{
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foreach (DeviceInfo &subinfo, info.multi_devices) {
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Device *device = Device::create(subinfo, sub_stats_, profiler, background);
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/* Always add CPU devices at the back since GPU devices can change
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* host memory pointers, which CPU uses as device pointer. */
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if (subinfo.type == DEVICE_CPU) {
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devices.push_back(SubDevice(device));
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}
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else {
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devices.push_front(SubDevice(device));
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}
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}
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foreach (DeviceInfo &subinfo, info.denoising_devices) {
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Device *device = Device::create(subinfo, sub_stats_, profiler, background);
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denoising_devices.push_back(SubDevice(device));
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}
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#ifdef WITH_NETWORK
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/* try to add network devices */
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ServerDiscovery discovery(true);
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time_sleep(1.0);
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vector<string> servers = discovery.get_server_list();
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foreach (string &server, servers) {
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Device *device = device_network_create(info, stats, profiler, server.c_str());
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if (device)
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devices.push_back(SubDevice(device));
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}
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#endif
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}
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~MultiDevice()
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{
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foreach (SubDevice &sub, devices)
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delete sub.device;
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foreach (SubDevice &sub, denoising_devices)
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delete sub.device;
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}
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const string &error_message()
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{
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error_msg.clear();
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foreach (SubDevice &sub, devices)
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error_msg += sub.device->error_message();
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foreach (SubDevice &sub, denoising_devices)
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error_msg += sub.device->error_message();
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return error_msg;
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}
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virtual bool show_samples() const
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{
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if (devices.size() > 1) {
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return false;
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}
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return devices.front().device->show_samples();
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}
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virtual BVHLayoutMask get_bvh_layout_mask() const
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{
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BVHLayoutMask bvh_layout_mask = BVH_LAYOUT_ALL;
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foreach (const SubDevice &sub_device, devices) {
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bvh_layout_mask &= sub_device.device->get_bvh_layout_mask();
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}
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return bvh_layout_mask;
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}
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bool load_kernels(const DeviceRequestedFeatures &requested_features)
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{
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foreach (SubDevice &sub, devices)
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if (!sub.device->load_kernels(requested_features))
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return false;
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if (requested_features.use_denoising) {
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foreach (SubDevice &sub, denoising_devices)
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if (!sub.device->load_kernels(requested_features))
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return false;
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}
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return true;
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}
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bool wait_for_availability(const DeviceRequestedFeatures &requested_features)
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{
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foreach (SubDevice &sub, devices)
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if (!sub.device->wait_for_availability(requested_features))
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return false;
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if (requested_features.use_denoising) {
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foreach (SubDevice &sub, denoising_devices)
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if (!sub.device->wait_for_availability(requested_features))
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return false;
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}
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return true;
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}
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DeviceKernelStatus get_active_kernel_switch_state()
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{
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DeviceKernelStatus result = DEVICE_KERNEL_USING_FEATURE_KERNEL;
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foreach (SubDevice &sub, devices) {
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DeviceKernelStatus subresult = sub.device->get_active_kernel_switch_state();
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switch (subresult) {
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case DEVICE_KERNEL_WAITING_FOR_FEATURE_KERNEL:
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result = subresult;
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break;
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case DEVICE_KERNEL_FEATURE_KERNEL_INVALID:
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case DEVICE_KERNEL_FEATURE_KERNEL_AVAILABLE:
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return subresult;
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case DEVICE_KERNEL_USING_FEATURE_KERNEL:
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case DEVICE_KERNEL_UNKNOWN:
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break;
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}
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}
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return result;
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}
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bool build_optix_bvh(BVH *bvh)
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{
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// Broadcast acceleration structure build to all render devices
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foreach (SubDevice &sub, devices)
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if (!sub.device->build_optix_bvh(bvh))
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return false;
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return true;
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}
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virtual void *osl_memory()
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{
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if (devices.size() > 1) {
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return NULL;
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}
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return devices.front().device->osl_memory();
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}
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void mem_alloc(device_memory &mem)
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{
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device_ptr key = unique_key++;
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foreach (SubDevice &sub, devices) {
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mem.device = sub.device;
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mem.device_pointer = 0;
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mem.device_size = 0;
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sub.device->mem_alloc(mem);
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sub.ptr_map[key] = mem.device_pointer;
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}
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mem.device = this;
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mem.device_pointer = key;
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stats.mem_alloc(mem.device_size);
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}
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void mem_copy_to(device_memory &mem)
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{
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device_ptr existing_key = mem.device_pointer;
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device_ptr key = (existing_key) ? existing_key : unique_key++;
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size_t existing_size = mem.device_size;
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foreach (SubDevice &sub, devices) {
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mem.device = sub.device;
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mem.device_pointer = (existing_key) ? sub.ptr_map[existing_key] : 0;
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mem.device_size = existing_size;
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sub.device->mem_copy_to(mem);
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sub.ptr_map[key] = mem.device_pointer;
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}
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mem.device = this;
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mem.device_pointer = key;
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stats.mem_alloc(mem.device_size - existing_size);
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}
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void mem_copy_from(device_memory &mem, int y, int w, int h, int elem)
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{
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device_ptr key = mem.device_pointer;
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int i = 0, sub_h = h / devices.size();
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foreach (SubDevice &sub, devices) {
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int sy = y + i * sub_h;
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int sh = (i == (int)devices.size() - 1) ? h - sub_h * i : sub_h;
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mem.device = sub.device;
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mem.device_pointer = sub.ptr_map[key];
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sub.device->mem_copy_from(mem, sy, w, sh, elem);
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i++;
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}
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mem.device = this;
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mem.device_pointer = key;
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}
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void mem_zero(device_memory &mem)
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{
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device_ptr existing_key = mem.device_pointer;
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device_ptr key = (existing_key) ? existing_key : unique_key++;
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size_t existing_size = mem.device_size;
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foreach (SubDevice &sub, devices) {
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mem.device = sub.device;
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mem.device_pointer = (existing_key) ? sub.ptr_map[existing_key] : 0;
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mem.device_size = existing_size;
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sub.device->mem_zero(mem);
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sub.ptr_map[key] = mem.device_pointer;
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}
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if (strcmp(mem.name, "RenderBuffers") == 0) {
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foreach (SubDevice &sub, denoising_devices) {
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mem.device = sub.device;
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mem.device_pointer = (existing_key) ? sub.ptr_map[existing_key] : 0;
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mem.device_size = existing_size;
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sub.device->mem_zero(mem);
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sub.ptr_map[key] = mem.device_pointer;
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}
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}
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mem.device = this;
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mem.device_pointer = key;
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stats.mem_alloc(mem.device_size - existing_size);
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}
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void mem_free(device_memory &mem)
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{
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device_ptr key = mem.device_pointer;
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size_t existing_size = mem.device_size;
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foreach (SubDevice &sub, devices) {
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mem.device = sub.device;
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mem.device_pointer = sub.ptr_map[key];
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mem.device_size = existing_size;
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sub.device->mem_free(mem);
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sub.ptr_map.erase(sub.ptr_map.find(key));
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}
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if (strcmp(mem.name, "RenderBuffers") == 0) {
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foreach (SubDevice &sub, denoising_devices) {
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mem.device = sub.device;
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mem.device_pointer = sub.ptr_map[key];
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mem.device_size = existing_size;
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sub.device->mem_free(mem);
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sub.ptr_map.erase(sub.ptr_map.find(key));
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}
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}
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mem.device = this;
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mem.device_pointer = 0;
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mem.device_size = 0;
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stats.mem_free(existing_size);
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}
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void const_copy_to(const char *name, void *host, size_t size)
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{
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foreach (SubDevice &sub, devices)
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sub.device->const_copy_to(name, host, size);
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}
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void draw_pixels(device_memory &rgba,
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int y,
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int w,
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int h,
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int width,
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int height,
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int dx,
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int dy,
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int dw,
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int dh,
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bool transparent,
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const DeviceDrawParams &draw_params)
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{
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device_ptr key = rgba.device_pointer;
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int i = 0, sub_h = h / devices.size();
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int sub_height = height / devices.size();
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foreach (SubDevice &sub, devices) {
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int sy = y + i * sub_h;
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int sh = (i == (int)devices.size() - 1) ? h - sub_h * i : sub_h;
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int sheight = (i == (int)devices.size() - 1) ? height - sub_height * i : sub_height;
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int sdy = dy + i * sub_height;
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/* adjust math for w/width */
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rgba.device_pointer = sub.ptr_map[key];
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sub.device->draw_pixels(
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rgba, sy, w, sh, width, sheight, dx, sdy, dw, dh, transparent, draw_params);
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i++;
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}
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rgba.device_pointer = key;
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}
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void map_tile(Device *sub_device, RenderTile &tile)
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{
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if (!tile.buffer) {
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return;
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}
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foreach (SubDevice &sub, devices) {
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if (sub.device == sub_device) {
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tile.buffer = sub.ptr_map[tile.buffer];
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return;
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}
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}
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foreach (SubDevice &sub, denoising_devices) {
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if (sub.device == sub_device) {
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tile.buffer = sub.ptr_map[tile.buffer];
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return;
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}
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}
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}
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int device_number(Device *sub_device)
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{
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int i = 0;
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foreach (SubDevice &sub, devices) {
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if (sub.device == sub_device)
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return i;
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i++;
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}
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foreach (SubDevice &sub, denoising_devices) {
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if (sub.device == sub_device)
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return i;
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i++;
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}
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return -1;
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}
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void map_neighbor_tiles(Device *sub_device, RenderTile *tiles)
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{
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for (int i = 0; i < 9; i++) {
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if (!tiles[i].buffers) {
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continue;
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}
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device_vector<float> &mem = tiles[i].buffers->buffer;
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tiles[i].buffer = mem.device_pointer;
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if (mem.device == this && denoising_devices.empty()) {
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/* Skip unnecessary copies in viewport mode (buffer covers the
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* whole image), but still need to fix up the tile device pointer. */
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map_tile(sub_device, tiles[i]);
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continue;
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}
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/* If the tile was rendered on another device, copy its memory to
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* to the current device now, for the duration of the denoising task.
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* Note that this temporarily modifies the RenderBuffers and calls
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* the device, so this function is not thread safe. */
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if (mem.device != sub_device) {
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/* Only copy from device to host once. This is faster, but
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* also required for the case where a CPU thread is denoising
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* a tile rendered on the GPU. In that case we have to avoid
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* overwriting the buffer being de-noised by the CPU thread. */
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if (!tiles[i].buffers->map_neighbor_copied) {
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tiles[i].buffers->map_neighbor_copied = true;
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mem.copy_from_device();
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}
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if (mem.device == this) {
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/* Can re-use memory if tile is already allocated on the sub device. */
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map_tile(sub_device, tiles[i]);
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mem.swap_device(sub_device, mem.device_size, tiles[i].buffer);
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}
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else {
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mem.swap_device(sub_device, 0, 0);
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}
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mem.copy_to_device();
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tiles[i].buffer = mem.device_pointer;
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tiles[i].device_size = mem.device_size;
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mem.restore_device();
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}
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}
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}
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void unmap_neighbor_tiles(Device *sub_device, RenderTile *tiles)
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{
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device_vector<float> &mem = tiles[9].buffers->buffer;
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if (mem.device == this && denoising_devices.empty()) {
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return;
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}
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/* Copy denoised result back to the host. */
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mem.swap_device(sub_device, tiles[9].device_size, tiles[9].buffer);
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mem.copy_from_device();
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mem.restore_device();
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/* Copy denoised result to the original device. */
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mem.copy_to_device();
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for (int i = 0; i < 9; i++) {
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if (!tiles[i].buffers) {
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continue;
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}
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device_vector<float> &mem = tiles[i].buffers->buffer;
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if (mem.device != sub_device && mem.device != this) {
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/* Free up memory again if it was allocated for the copy above. */
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mem.swap_device(sub_device, tiles[i].device_size, tiles[i].buffer);
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sub_device->mem_free(mem);
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mem.restore_device();
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}
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}
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}
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int get_split_task_count(DeviceTask &task)
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{
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int total_tasks = 0;
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list<DeviceTask> tasks;
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task.split(tasks, devices.size());
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foreach (SubDevice &sub, devices) {
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if (!tasks.empty()) {
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DeviceTask subtask = tasks.front();
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tasks.pop_front();
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total_tasks += sub.device->get_split_task_count(subtask);
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}
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}
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return total_tasks;
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}
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void task_add(DeviceTask &task)
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{
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list<SubDevice> task_devices = devices;
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if (!denoising_devices.empty()) {
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if (task.type == DeviceTask::DENOISE_BUFFER) {
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/* Denoising tasks should be redirected to the denoising devices entirely. */
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task_devices = denoising_devices;
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}
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else if (task.type == DeviceTask::RENDER && (task.tile_types & RenderTile::DENOISE)) {
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const uint tile_types = task.tile_types;
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/* For normal rendering tasks only redirect the denoising part to the denoising devices.
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* Do not need to split the task here, since they all run through 'acquire_tile'. */
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task.tile_types = RenderTile::DENOISE;
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foreach (SubDevice &sub, denoising_devices) {
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sub.device->task_add(task);
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}
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/* Rendering itself should still be executed on the rendering devices. */
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task.tile_types = tile_types ^ RenderTile::DENOISE;
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}
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}
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list<DeviceTask> tasks;
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task.split(tasks, task_devices.size());
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foreach (SubDevice &sub, task_devices) {
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if (!tasks.empty()) {
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DeviceTask subtask = tasks.front();
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tasks.pop_front();
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if (task.buffer)
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subtask.buffer = sub.ptr_map[task.buffer];
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if (task.rgba_byte)
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subtask.rgba_byte = sub.ptr_map[task.rgba_byte];
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if (task.rgba_half)
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subtask.rgba_half = sub.ptr_map[task.rgba_half];
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if (task.shader_input)
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subtask.shader_input = sub.ptr_map[task.shader_input];
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if (task.shader_output)
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subtask.shader_output = sub.ptr_map[task.shader_output];
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sub.device->task_add(subtask);
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}
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}
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}
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void task_wait()
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{
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foreach (SubDevice &sub, devices)
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sub.device->task_wait();
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foreach (SubDevice &sub, denoising_devices)
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sub.device->task_wait();
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}
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|
void task_cancel()
|
|
{
|
|
foreach (SubDevice &sub, devices)
|
|
sub.device->task_cancel();
|
|
foreach (SubDevice &sub, denoising_devices)
|
|
sub.device->task_cancel();
|
|
}
|
|
|
|
protected:
|
|
Stats sub_stats_;
|
|
};
|
|
|
|
Device *device_multi_create(DeviceInfo &info, Stats &stats, Profiler &profiler, bool background)
|
|
{
|
|
return new MultiDevice(info, stats, profiler, background);
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|