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/*
* Copyright 2011-2013 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 "blender/blender_device.h"
#include "blender/blender_util.h"
#include "util/util_foreach.h"
CCL_NAMESPACE_BEGIN
enum DenoiserType {
DENOISER_NONE = 0,
DENOISER_OPTIX = 1,
DENOISER_NUM
};
enum ComputeDevice {
COMPUTE_DEVICE_CPU = 0,
COMPUTE_DEVICE_CUDA = 1,
COMPUTE_DEVICE_OPENCL = 2,
COMPUTE_DEVICE_OPTIX = 3,
COMPUTE_DEVICE_NUM
};
int blender_device_threads(BL::Scene &b_scene)
{
BL::RenderSettings b_r = b_scene.render();
if (b_r.threads_mode() == BL::RenderSettings::threads_mode_FIXED)
return b_r.threads();
else
return 0;
}
DeviceInfo blender_device_info(BL::Preferences &b_preferences, BL::Scene &b_scene, bool background)
{
PointerRNA cscene = RNA_pointer_get(&b_scene.ptr, "cycles");
/* Default to CPU device. */
DeviceInfo device = Device::available_devices(DEVICE_MASK_CPU).front();
if (get_enum(cscene, "device") == 2) {
/* Find network device. */
vector<DeviceInfo> devices = Device::available_devices(DEVICE_MASK_NETWORK);
if (!devices.empty()) {
return devices.front();
}
}
else if (get_enum(cscene, "device") == 1) {
/* Find cycles preferences. */
PointerRNA cpreferences;
BL::Preferences::addons_iterator b_addon_iter;
for (b_preferences.addons.begin(b_addon_iter); b_addon_iter != b_preferences.addons.end();
++b_addon_iter) {
if (b_addon_iter->module() == "cycles") {
cpreferences = b_addon_iter->preferences().ptr;
break;
}
}
/* Test if we are using GPU devices. */
ComputeDevice compute_device = (ComputeDevice)get_enum(
cpreferences, "compute_device_type", COMPUTE_DEVICE_NUM, COMPUTE_DEVICE_CPU);
if (compute_device != COMPUTE_DEVICE_CPU) {
/* Query GPU devices with matching types. */
uint mask = DEVICE_MASK_CPU;
if (compute_device == COMPUTE_DEVICE_CUDA) {
mask |= DEVICE_MASK_CUDA;
}
else if (compute_device == COMPUTE_DEVICE_OPTIX) {
/* Cannot use CPU and OptiX device at the same time right now, so replace mask. */
mask = DEVICE_MASK_OPTIX;
}
else if (compute_device == COMPUTE_DEVICE_OPENCL) {
mask |= DEVICE_MASK_OPENCL;
}
vector<DeviceInfo> devices = Device::available_devices(mask);
/* Match device preferences and available devices. */
vector<DeviceInfo> used_devices;
RNA_BEGIN (&cpreferences, device, "devices") {
if (get_boolean(device, "use")) {
string id = get_string(device, "id");
foreach (DeviceInfo &info, devices) {
if (info.id == id) {
used_devices.push_back(info);
break;
}
}
}
}
RNA_END;
if (!used_devices.empty()) {
int threads = blender_device_threads(b_scene);
device = Device::get_multi_device(used_devices, threads, background);
}
/* Else keep using the CPU device that was set before. */
if (!get_boolean(cpreferences, "peer_memory")) {
device.has_peer_memory = false;
}
}
}
/* Ensure there is an OptiX device when using the OptiX denoiser. */
bool use_optix_denoising = get_enum(cscene, "preview_denoising", DENOISER_NUM, DENOISER_NONE) ==
DENOISER_OPTIX &&
!background;
BL::Scene::view_layers_iterator b_view_layer;
for (b_scene.view_layers.begin(b_view_layer); b_view_layer != b_scene.view_layers.end();
++b_view_layer) {
PointerRNA crl = RNA_pointer_get(&b_view_layer->ptr, "cycles");
if (get_boolean(crl, "use_optix_denoising")) {
use_optix_denoising = true;
}
}
if (use_optix_denoising && device.type != DEVICE_OPTIX) {
vector<DeviceInfo> optix_devices = Device::available_devices(DEVICE_MASK_OPTIX);
if (!optix_devices.empty()) {
/* Convert to a special multi device with separate denoising devices. */
if (device.multi_devices.empty()) {
device.multi_devices.push_back(device);
}
/* Try to use the same physical devices for denoising. */
for (const DeviceInfo &cuda_device : device.multi_devices) {
if (cuda_device.type == DEVICE_CUDA) {
for (const DeviceInfo &optix_device : optix_devices) {
if (cuda_device.num == optix_device.num) {
device.id += optix_device.id;
device.denoising_devices.push_back(optix_device);
break;
}
}
}
}
if (device.denoising_devices.empty()) {
/* Simply use the first available OptiX device. */
const DeviceInfo optix_device = optix_devices.front();
device.id += optix_device.id; /* Uniquely identify this special multi device. */
device.denoising_devices.push_back(optix_device);
}
}
}
return device;
}
CCL_NAMESPACE_END
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