mirror of
https://github.com/TheRedShip/RT_GPU.git
synced 2025-09-27 10:48:34 +02:00
262 lines
7.3 KiB
C++
262 lines
7.3 KiB
C++
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* Renderer.cpp :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: tomoron <tomoron@student.42angouleme.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/01/22 16:34:53 by tomoron #+# #+# */
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/* Updated: 2025/01/25 03:25:48 by tomoron ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "RT.hpp"
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Renderer::Renderer(Scene *scene, Window *win)
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{
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_scene = scene;
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_win = win;
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_min = 0;
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_sec = 0;
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_fps = 30;
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_samples = 1;
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_testSamples = 1;
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_curSamples = 0;
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_destPathIndex = 0;
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_frameCount = 0;
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_frame = 0;
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_format = 0;
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_codec_context = 0;
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}
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void Renderer::initFfmpeg(std::string filename)
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{
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const AVCodec *codec;
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AVStream *stream;
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avformat_alloc_output_context2(&_format, nullptr, nullptr, filename.c_str());
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codec = avcodec_find_encoder(AV_CODEC_ID_H264);
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if (!codec)
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throw std::runtime_error("unable to find H264 audio/video codec, glhf");
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_codec_context = avcodec_alloc_context3(codec);
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_codec_context->width = WIDTH;
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_codec_context->height = HEIGHT;
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_codec_context->time_base = {1, _fps};
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_codec_context->framerate = {_fps, 1};
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_codec_context->pix_fmt = AV_PIX_FMT_RGB24;
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_codec_context->gop_size = 10;
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_codec_context->max_b_frames = 1;
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if (_format->oformat->flags & AVFMT_GLOBALHEADER)
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_codec_context->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
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if (avcodec_open2(_codec_context, codec, nullptr) < 0)
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throw std::runtime_error("Failed to open codec");
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stream = avformat_new_stream(_format, codec);
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if (!stream)
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throw std::runtime_error("Failed to create stream");
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stream->time_base = _codec_context->time_base;
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avcodec_parameters_from_context(stream->codecpar, _codec_context);
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if (!(_format->flags & AVFMT_NOFILE))
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{
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if (avio_open(&_format->pb, filename.c_str(), AVIO_FLAG_WRITE) < 0)
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throw std::runtime_error("couldn't open " + filename);
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}
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(void)avformat_write_header(_format, nullptr);
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_frame = av_frame_alloc();
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_frame->format = _codec_context->pix_fmt;
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_frame->width = _codec_context->width;
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_frame->height = _codec_context->height;
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av_image_alloc(_frame->data, _frame->linesize, WIDTH, HEIGHT, _codec_context->pix_fmt, 32);
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}
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void Renderer::addImageToRender(Shader &shader)
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{
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std::vector<float> image;
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AVPacket *pkt;
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long int videoFrameOffset;
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long int outputImageOffset;
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image = shader.getOutputImage();
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for (int x = 0; x < WIDTH; x++)
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{
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for(int y = 0; y < HEIGHT; y++)
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{
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videoFrameOffset = (y * _frame->linesize[0]) + (x * 3);
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outputImageOffset = (y * (WIDTH * 4)) + (x * 4);
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_frame->data[0][videoFrameOffset] = image[outputImageOffset];
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_frame->data[0][videoFrameOffset + 1] = image[outputImageOffset + 1];
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_frame->data[0][videoFrameOffset + 2] = image[outputImageOffset + 2];
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}
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}
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_frame->pts = _frameCount;
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if (avcodec_send_frame(_codec_context, _frame) == 0) {
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pkt = av_packet_alloc();
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while (avcodec_receive_packet(_codec_context, pkt) == 0) {
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av_interleaved_write_frame(_format, pkt);
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av_packet_unref(pkt);
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}
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av_packet_free(&pkt);
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}
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}
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void Renderer::endRender(void)
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{
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av_write_trailer(_format);
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av_frame_free(&_frame);
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avcodec_free_context(&_codec_context);
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avio_close(_format->pb);
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avformat_free_context(_format);
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_format = 0;
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_frame = 0;
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_codec_context = 0;
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}
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void Renderer::addPoint(void)
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{
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t_pathPoint newPoint;
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Camera *cam;
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std::vector<t_pathPoint>::iterator pos;
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cam = _scene->getCamera();
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newPoint.pos = cam->getPosition();
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newPoint.dir = cam->getDirection();
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newPoint.time = _min + ((float)_sec / 60);
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pos = _path.begin();
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while(pos != _path.end() && pos->time <= newPoint.time)
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pos++;
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_path.insert(pos, newPoint);
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}
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void Renderer::update(Shader &shader)
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{
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double curTime;
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(void)shader;
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if(!_destPathIndex)
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return;
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curTime = glfwGetTime();
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_curSamples++;
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if(_testMode && _curSamples == _testSamples)
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{
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makeMovement(curTime - _curSplitStart, curTime);
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_curSamples = 0;
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return;
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}
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//TODO: the rest
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}
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void Renderer::makeMovement(float timeFromStart, float curSplitTimeReset)
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{
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t_pathPoint from;
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t_pathPoint to;
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float pathTime;
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Camera *cam;
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glm::vec3 posStep;
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glm::vec2 dirStep;
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from = _path[_curPathIndex];
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to = _path[_curPathIndex + 1];
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cam = _scene->getCamera();
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pathTime = (to.time - from.time) * 60;
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posStep.x = ((to.pos.x - from.pos.x) / pathTime) * timeFromStart;
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posStep.y = ((to.pos.y - from.pos.y) / pathTime) * timeFromStart;
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posStep.z = ((to.pos.z - from.pos.z) / pathTime) * timeFromStart;
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dirStep.x = ((to.dir.x - from.dir.x) / pathTime) * timeFromStart;
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dirStep.y = ((to.dir.y - from.dir.y) / pathTime) * timeFromStart;
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if(timeFromStart >= pathTime)
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{
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posStep = to.pos - from.pos;
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dirStep = to.dir - from.dir;
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_curSplitStart = curSplitTimeReset;
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_curPathIndex++;
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}
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cam->setPosition(from.pos + posStep);
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cam->setDirection(from.dir.x + dirStep.x, from.dir.y + dirStep.y);
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_win->setFrameCount(0);
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if(_curPathIndex == _destPathIndex)
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{
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_destPathIndex = 0;
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_testMode = 0;
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}
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}
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void Renderer::renderImgui(void)
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{
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ImGui::Begin("Renderer");
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ImGui::SliderInt("test spi", &_testSamples, 1, 10);
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ImGui::SliderInt("render spi", &_samples, 1, 1000);
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ImGui::SliderInt("render fps", &_fps, 30, 120);
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if(_path.size() && ImGui::Button("try full path"))
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{
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_scene->getCamera()->setPosition(_path[0].pos);
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_scene->getCamera()->setDirection(_path[0].dir.x, _path[0].dir.y);
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_win->setFrameCount(-1);
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_curSplitStart = glfwGetTime();
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_curPathIndex = 0;
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_destPathIndex = _path.size() - 1;
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_testMode = 1;
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}
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ImGui::Separator();
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ImGui::SliderInt("minutes", &_min, 0, 2);
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ImGui::SliderInt("seconds", &_sec, 0, 60);
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if(ImGui::Button("add step"))
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addPoint();
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ImGui::Separator();
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for(unsigned long i = 0; i < _path.size(); i++)
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{
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ImGui::Text("pos : %f, %f, %f",_path[i].pos.x, _path[i].pos.y, _path[i].pos.z);
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ImGui::Text("dir : %f, %f",_path[i].dir.x, _path[i].dir.y);
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ImGui::Text("time : %dm%ds", (int)_path[i].time, (int)(((_path[i].time - (int)_path[i].time)) * 60));
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if(ImGui::Button(("delete##" + std::to_string(i)).c_str()))
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{
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_path.erase(_path.begin() + i);
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}
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ImGui::SameLine();
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if(ImGui::Button(("go to pos##" + std::to_string(i)).c_str()))
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{
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_scene->getCamera()->setPosition(_path[i].pos);
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_scene->getCamera()->setDirection(_path[i].dir.x, _path[i].dir.y);
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_win->setFrameCount(-1);
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}
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ImGui::SameLine();
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if(ImGui::Button(("edit pos##" + std::to_string(i)).c_str()))
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{
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_path[i].pos = _scene->getCamera()->getPosition();
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_path[i].dir = _scene->getCamera()->getDirection();
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}
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if(i)
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ImGui::SameLine();
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if(i && ImGui::Button(("test split##" + std::to_string(i)).c_str()))
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{
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_scene->getCamera()->setPosition(_path[i].pos);
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_scene->getCamera()->setDirection(_path[i].dir.x, _path[i].dir.y);
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_win->setFrameCount(-1);
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_curSplitStart = glfwGetTime();
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_curPathIndex = i - 1;
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_destPathIndex = i;
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_testMode = 1;
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}
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ImGui::Separator();
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}
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ImGui::End();
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}
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