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/*
* Copyright 2019, NVIDIA Corporation.
* Copyright 2019, 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/optix/device.h"
#include "device/cuda/device.h"
#include "device/optix/device_impl.h"
#include "util/util_logging.h"
#ifdef WITH_OPTIX
# include <optix_function_table_definition.h>
#endif
CCL_NAMESPACE_BEGIN
bool device_optix_init()
{
#ifdef WITH_OPTIX
if (g_optixFunctionTable.optixDeviceContextCreate != NULL) {
/* Already initialized function table. */
return true;
}
/* Need to initialize CUDA as well. */
if (!device_cuda_init()) {
return false;
}
const OptixResult result = optixInit();
if (result == OPTIX_ERROR_UNSUPPORTED_ABI_VERSION) {
VLOG(1) << "OptiX initialization failed because the installed NVIDIA driver is too old. "
"Please update to the latest driver first!";
return false;
}
else if (result != OPTIX_SUCCESS) {
VLOG(1) << "OptiX initialization failed with error code " << (unsigned int)result;
return false;
}
/* Loaded OptiX successfully! */
return true;
#else
return false;
#endif
}
void device_optix_info(const vector<DeviceInfo> &cuda_devices, vector<DeviceInfo> &devices)
{
#ifdef WITH_OPTIX
devices.reserve(cuda_devices.size());
/* Simply add all supported CUDA devices as OptiX devices again. */
for (DeviceInfo info : cuda_devices) {
assert(info.type == DEVICE_CUDA);
int major;
cuDeviceGetAttribute(&major, CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MAJOR, info.num);
if (major < 5) {
/* Only Maxwell and up are supported by OptiX. */
continue;
}
info.type = DEVICE_OPTIX;
info.id += "_OptiX";
info.denoisers |= DENOISER_OPTIX;
devices.push_back(info);
}
#else
(void)cuda_devices;
(void)devices;
#endif
}
Device *device_optix_create(const DeviceInfo &info, Stats &stats, Profiler &profiler)
{
#ifdef WITH_OPTIX
return new OptiXDevice(info, stats, profiler);
#else
(void)info;
(void)stats;
(void)profiler;
LOG(FATAL) << "Request to create OptiX device without compiled-in support. Should never happen.";
return nullptr;
#endif
}
CCL_NAMESPACE_END
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