mirror of
https://github.com/Xaymar/obs-StreamFX
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4d8ff417e7
Load additional functions from CUDA and add new enumerations to support them: * cuDevicePrimaryCtxSetFlags allows us to sched scheduling mode for the GPU. * cuCtxgetStreamPriorityRange allows us to check which priority levels are supported. * cuStreamCreateWithPriority allows us to create streams with non-default priority. The scheduler mode is now set to yield so that other threads can do work when we hit an eventual stalling problem. Streams can also now be created with higher priority and different flags, if necessary. In most cases this should allow CUDA resources to execute even while the GPU is under heavy load.
49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
/*
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* Modern effects for a modern Streamer
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* Copyright (C) 2020 Michael Fabian Dirks
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "nvidia-cuda-stream.hpp"
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#include <stdexcept>
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nvidia::cuda::stream::stream(std::shared_ptr<::nvidia::cuda::cuda> cuda, ::nvidia::cuda::cu_stream_flags flags,
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std::int32_t priority)
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: _cuda(cuda)
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{
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nvidia::cuda::cu_result res;
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if (priority == 0) {
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res = _cuda->cuStreamCreate(&_stream, flags);
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} else {
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res = _cuda->cuStreamCreateWithPriority(&_stream, flags, priority);
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}
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switch (res) {
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case nvidia::cuda::cu_result::SUCCESS:
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break;
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default:
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throw std::runtime_error("Failed to create CUstream object.");
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}
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}
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nvidia::cuda::stream::~stream()
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{
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_cuda->cuStreamDestroy(_stream);
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}
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::nvidia::cuda::cu_stream_t nvidia::cuda::stream::get()
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{
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return _stream;
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}
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