mirror of
https://github.com/Xaymar/obs-StreamFX
synced 2024-10-24 13:52:39 +00:00
88213e81f6
Due to the 'nvcuda' library being part of the driver, it falls in a clause of the GPL which allows us to load and interface with system drivers. Since we can't rely on Nvidias headers here (incompatible license), most of this was pulled from FFmpeg and other things were found out via testing.
116 lines
3.2 KiB
C++
116 lines
3.2 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-gs-texture.hpp"
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#include "obs/gs/gs-helper.hpp"
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nvidia::cuda::gstexture::gstexture(std::shared_ptr<nvidia::cuda::cuda> cuda, std::shared_ptr<gs::texture> texture)
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: _cuda(cuda), _texture(texture), _resource(), _is_mapped(false), _pointer()
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{
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if (!texture)
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throw std::invalid_argument("texture");
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if (!cuda)
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throw std::invalid_argument("cuda");
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auto gtc = gs::context{};
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int dev_type = gs_get_device_type();
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if (dev_type == GS_DEVICE_OPENGL) {
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// ToDo
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}
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#ifdef WIN32
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if (dev_type == GS_DEVICE_DIRECT3D_11) {
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ID3D11Resource* resource = nullptr;
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switch (_texture->get_type()) {
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case gs::texture::type::Cube:
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case gs::texture::type::Normal: {
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resource = static_cast<ID3D11Resource*>(gs_texture_get_obj(_texture->get_object()));
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break;
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}
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case gs::texture::type::Volume: {
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resource = static_cast<ID3D11Resource*>(gs_texture_get_obj(_texture->get_object()));
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break;
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}
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}
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if (!resource) {
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throw std::runtime_error("nvidia::cuda::gstexture: Failed to get resource from gs::texture.");
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}
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switch (_cuda->cuGraphicsD3D11RegisterResource(&_resource, resource, 0)) {
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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("nvidia::cuda::gstexture: Failed to register resource.");
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}
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}
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#endif
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}
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nvidia::cuda::gstexture::~gstexture()
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{
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unmap();
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_cuda->cuGraphicsUnregisterResource(_resource);
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}
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nvidia::cuda::cu_array_t nvidia::cuda::gstexture::map(std::shared_ptr<nvidia::cuda::stream> stream)
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{
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if (_is_mapped) {
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return _pointer;
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}
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cu_graphics_resource_t resources[] = {_resource};
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switch (_cuda->cuGraphicsMapResources(1, resources, stream->get())) {
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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("nvidia::cuda::gstexture: Mapping failed.");
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}
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_stream = stream;
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_is_mapped = true;
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switch (_cuda->cuGraphicsSubResourceGetMappedArray(&_pointer, _resource, 0, 0)) {
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case nvidia::cuda::cu_result::SUCCESS:
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break;
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default:
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unmap();
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throw std::runtime_error("nvidia::cuda::gstexture: Mapping pointer failed.");
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}
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return _pointer;
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}
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void nvidia::cuda::gstexture::unmap()
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{
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if (!_is_mapped)
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return;
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cu_graphics_resource_t resources[] = {_resource};
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switch (_cuda->cuGraphicsUnmapResources(1, resources, _stream->get())) {
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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("nvidia::cuda::gstexture: Unmapping failed.");
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}
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_is_mapped = false;
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_pointer = nullptr;
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_stream.reset();
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}
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