fix conditional jump problems, add functions to use ffmpeg for the render and add ffmpeg to compile the project

Makefile

@@ -30,7 +30,7 @@ else
 	CC          :=	clang++
 	CFLAGS      :=	-Wall -Wextra -Werror -g -O3
 	IFLAGS	    :=	-I./includes -I./includes/RT -I./includes/imgui -I/usr/include
-	LDFLAGS		:=  -L/usr/lib/x86_64-linux-gnu -lglfw -lGL -lGLU -lX11 -lpthread -ldl -lstdc++
+	LDFLAGS		:=  -L/usr/lib/x86_64-linux-gnu -lglfw -lGL -lGLU -lX11 -lpthread -ldl -lstdc++ -lavformat -lavcodec -lavutil -lswscale -lswresample
 	FILE		=	$(shell ls -lR srcs/ | grep -F .c | wc -l)
 	CMP			=	1
 endif
@@ -62,19 +62,19 @@ OBJS		:=	$(addprefix $(OBJS_DIR)/, $(SRCS:%.cpp=%.o))
 HEADERS		:=	includes/RT.hpp
 MAKEFLAGS   += --no-print-directory
 
-ifeq ($(OS),Windows_NT)
+all: $(NAME)
-all: windows
-else
-all: linux
-endif
 
-windows: $(OBJS) $(HEADERS)
+ifeq ($(OS),Windows_NT)
+$(NAME): $(OBJS) $(HEADERS)
 	@$(CC) $(OBJS) $(IFLAGS) $(LDFLAGS) -o $(NAME)
 	@echo $(WHITE) $(NAME): PROJECT COMPILED !$(RESET)
-
+else
-linux: $(OBJS) $(HEADERS)
+$(NAME): $(OBJS) $(HEADERS)
 	@$(CC) $(OBJS) $(IFLAGS) $(CFLAGS) $(LDFLAGS) -o $(NAME)
 	@printf "$(LINE_CLR)$(WHITE) $(NAME): PROJECT COMPILED !$(RESET)\n\n"
+endif
+
+
 
 $(OBJS_DIR)/%.o: %.cpp
 	@$(DIR_DUP)
@@ -109,10 +109,6 @@ else
 	@$(RM) $(OBJS_DIR)
 endif
 
-ifeq ($(OS),Windows_NT)
+re: fclean $(NAME) 
-re: fclean windows
-else
-re: fclean linux
-endif
 
 .PHONY: all clean fclean re windows linux

imgui.ini

@@ -3,7 +3,7 @@ Pos=60,60
 Size=400,400
 
 [Window][Camera]
-Pos=687,817
+Pos=687,417
 Size=259,200
 
 [Window][Material]
@@ -11,7 +11,7 @@ Pos=646,129
 Size=266,299
 
 [Window][Fog settings]
-Pos=35,863
+Pos=35,417
 Size=247,130
 
 [Window][Debug]
@@ -24,6 +24,6 @@ Size=274,205
 Collapsed=1
 
 [Window][Renderer]
-Pos=31,66
+Pos=32,4
-Size=747,496
+Size=404,469
 

includes/RT/Renderer.hpp

@@ -6,7 +6,7 @@
 /*   By: tomoron <tomoron@student.42angouleme.fr>   +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/01/22 16:29:26 by tomoron           #+#    #+#             */
-/*   Updated: 2025/01/23 19:41:40 by tomoron          ###   ########.fr       */
+/*   Updated: 2025/01/25 03:12:38 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,9 +14,16 @@
 # define RENDERER_HPP
 
 # include "RT.hpp"
+extern "C" {
+#include <libavformat/avformat.h>
+#include <libavcodec/avcodec.h>
+#include <libavutil/avutil.h>
+#include <libavutil/imgutils.h>
+}
 
 class Scene;
 class Window;
+class Shader;
 
 typedef struct s_pathPoint
 {
@@ -30,15 +37,20 @@ class Renderer
 	public:
 		Renderer(Scene *scene, Window *win);
 		void	renderImgui(void);
-		void	update(void);
+		void	update(Shader &shader);
 
 	private:
 		void	addPoint(void);
 		void	makeMovement(float timeFromStart, float curSplitTimeReset);
+		void	initFfmpeg(std::string filename);
+		void	addImageToRender(Shader &shader);
+		void	endRender(void);
 
 		int							_min;
-		float						_sec;
+		int							_sec;
 		int							_samples;
+		int							_testSamples;
+		int							_fps;
 		std::vector<t_pathPoint>	_path;
 		Scene						*_scene;
 		Window						*_win;
@@ -47,6 +59,13 @@ class Renderer
 		int							_destPathIndex;
 		double						_curSplitStart;
 		int							_curSamples;
+		int							_testMode;
+		long int					_frameCount;
+
+		AVFrame						*_frame;
+		AVFormatContext				*_format;
+		AVCodecContext				*_codec_context;
+
 };
 
 #endif

includes/RT/Shader.hpp

@@ -6,7 +6,7 @@
 /*   By: ycontre <ycontre@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/10/13 18:10:10 by TheRed            #+#    #+#             */
-/*   Updated: 2024/10/14 19:51:46 by ycontre          ###   ########.fr       */
+/*   Updated: 2025/01/25 02:40:13 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -36,6 +36,8 @@ class Shader
 		GLuint	getProgram(void) const;
 		GLuint	getProgramCompute(void) const;
 
+		std::vector<float> getOutputImage(void);
+		
 
 	private:
 		GLuint _screen_VAO, _screen_VBO;

includes/RT/Window.hpp

@@ -6,7 +6,7 @@
 /*   By: ycontre <ycontre@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/10/13 16:15:41 by TheRed            #+#    #+#             */
-/*   Updated: 2025/01/23 15:31:28 by tomoron          ###   ########.fr       */
+/*   Updated: 2025/01/25 03:09:23 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -46,7 +46,7 @@ class Window
 
 		void		setFrameCount(int nb);
 
-		void		rendererUpdate(void);
+		void		rendererUpdate(Shader &shader);
 	private:
 		GLFWwindow	*_window;
 		Scene		*_scene;

shell.nix

@@ -1,5 +1,5 @@
 { pkgs ? import <nixpkgs> {} }:
   pkgs.mkShell {
-    nativeBuildInputs = with pkgs; [ libGL xorg.libX11 libGLU glfw];
+    nativeBuildInputs = with pkgs; [ libGL xorg.libX11 libGLU glfw ffmpeg];
 }
 

srcs/RT.cpp

@@ -6,7 +6,7 @@
 /*   By: ycontre <ycontre@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/09/27 14:51:49 by TheRed            #+#    #+#             */
-/*   Updated: 2025/01/23 18:37:21 by tomoron          ###   ########.fr       */
+/*   Updated: 2025/01/25 02:29:18 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -115,7 +115,7 @@ int main(int argc, char **argv)
 		std::vector<int> gpu_lights_array(gpu_lights.begin(), gpu_lights.end());
 		glBindBuffer(GL_SHADER_STORAGE_BUFFER, lightSSBO);
 		glBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, gpu_lights_array.size() * sizeof(int), gpu_lights_array.data());
-		window.rendererUpdate();
+		window.rendererUpdate(shader);
 
 		Camera *camera = scene.getCamera();
 

srcs/class/Renderer.cpp

@@ -6,7 +6,7 @@
 /*   By: tomoron <tomoron@student.42angouleme.fr>   +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/01/22 16:34:53 by tomoron           #+#    #+#             */
-/*   Updated: 2025/01/23 19:42:56 by tomoron          ###   ########.fr       */
+/*   Updated: 2025/01/25 03:25:48 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,11 +18,109 @@ Renderer::Renderer(Scene *scene, Window *win)
 	_win = win;
 	_min = 0;
 	_sec = 0;
+	_fps = 30;
 	_samples = 1;
+	_testSamples = 1;
 	_curSamples = 0;
+	_destPathIndex = 0;
+	_frameCount = 0;
+
+	_frame = 0;
+	_format = 0;
+	_codec_context = 0;
 }
 
-void Renderer::addPoint(void)
+void	Renderer::initFfmpeg(std::string filename)
+{
+	const AVCodec *codec;
+	AVStream *stream;
+	
+	avformat_alloc_output_context2(&_format, nullptr, nullptr, filename.c_str());
+	codec = avcodec_find_encoder(AV_CODEC_ID_H264);
+	if (!codec)
+		throw std::runtime_error("unable to find H264 audio/video codec, glhf");
+	
+	_codec_context = avcodec_alloc_context3(codec);
+	_codec_context->width = WIDTH;
+	_codec_context->height = HEIGHT;
+	_codec_context->time_base = {1, _fps};
+	_codec_context->framerate = {_fps, 1};
+	_codec_context->pix_fmt = AV_PIX_FMT_RGB24;
+	_codec_context->gop_size = 10;
+	_codec_context->max_b_frames = 1;
+
+	if (_format->oformat->flags & AVFMT_GLOBALHEADER)
+		_codec_context->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
+
+	if (avcodec_open2(_codec_context, codec, nullptr) < 0)
+		throw std::runtime_error("Failed to open codec");
+	
+	stream = avformat_new_stream(_format, codec);
+	if (!stream) 
+		throw std::runtime_error("Failed to create stream");
+	stream->time_base = _codec_context->time_base;
+	avcodec_parameters_from_context(stream->codecpar, _codec_context);
+
+	if (!(_format->flags & AVFMT_NOFILE))
+	{
+		if (avio_open(&_format->pb, filename.c_str(), AVIO_FLAG_WRITE) < 0)
+			throw std::runtime_error("couldn't open " + filename);
+	}
+	(void)avformat_write_header(_format, nullptr);
+
+	_frame = av_frame_alloc();
+	_frame->format = _codec_context->pix_fmt;
+	_frame->width = _codec_context->width;
+	_frame->height = _codec_context->height;
+	av_image_alloc(_frame->data, _frame->linesize, WIDTH, HEIGHT, _codec_context->pix_fmt, 32);
+}
+
+void	Renderer::addImageToRender(Shader &shader)
+{
+	std::vector<float> image;
+	AVPacket *pkt;
+	long int videoFrameOffset;
+	long int outputImageOffset;
+
+	image = shader.getOutputImage();
+
+	for (int x = 0; x < WIDTH; x++)
+	{
+		for(int y = 0; y < HEIGHT; y++)
+		{
+			videoFrameOffset = (y * _frame->linesize[0]) + (x * 3);
+			outputImageOffset = (y * (WIDTH * 4)) + (x * 4);
+			_frame->data[0][videoFrameOffset] = image[outputImageOffset];
+			_frame->data[0][videoFrameOffset + 1] = image[outputImageOffset + 1];
+			_frame->data[0][videoFrameOffset + 2] = image[outputImageOffset + 2];
+		}
+	}
+
+	_frame->pts = _frameCount;
+	if (avcodec_send_frame(_codec_context, _frame) == 0) {
+		pkt = av_packet_alloc();
+		while (avcodec_receive_packet(_codec_context, pkt) == 0) {
+			av_interleaved_write_frame(_format, pkt);
+			av_packet_unref(pkt);
+		}
+		av_packet_free(&pkt);
+	}
+}
+
+void	Renderer::endRender(void)
+{
+	av_write_trailer(_format);
+    av_frame_free(&_frame);
+    avcodec_free_context(&_codec_context);
+    avio_close(_format->pb);
+    avformat_free_context(_format);
+
+	_format = 0;
+	_frame = 0;
+	_codec_context = 0;
+}
+
+void	Renderer::addPoint(void)
 {
 	t_pathPoint newPoint;
 	Camera		*cam;
@@ -31,26 +129,29 @@ void Renderer::addPoint(void)
 	cam = _scene->getCamera();
 	newPoint.pos = cam->getPosition();	
 	newPoint.dir = cam->getDirection();
-	newPoint.time = _min + (_sec / 60);
+	newPoint.time = _min + ((float)_sec / 60);
 	pos = _path.begin();
 	while(pos != _path.end() && pos->time <= newPoint.time)
 		pos++;
 	_path.insert(pos, newPoint);
 }
 
-void Renderer::update(void)
+void Renderer::update(Shader &shader)
 {
 	double			curTime;
 
+	(void)shader;
 	if(!_destPathIndex)
 		return;
 	curTime = glfwGetTime();
 	_curSamples++;
-	if(_curSamples == _samples)
+	if(_testMode && _curSamples == _testSamples)
 	{
 		makeMovement(curTime - _curSplitStart, curTime);
 		_curSamples = 0;
+		return;
 	}
+	//TODO: the rest
 }
 
 void Renderer::makeMovement(float timeFromStart, float curSplitTimeReset)
@@ -86,7 +187,7 @@ void Renderer::makeMovement(float timeFromStart, float curSplitTimeReset)
 	if(_curPathIndex == _destPathIndex)
 	{
 		_destPathIndex = 0;
-		std::cout << "done" << std::endl;
+		_testMode = 0;
 	}
 }
 
@@ -94,11 +195,23 @@ void Renderer::renderImgui(void)
 {
 	ImGui::Begin("Renderer");
 
-	ImGui::SliderInt("spi", &_samples, 1, 1000);
+	ImGui::SliderInt("test spi", &_testSamples, 1, 10);
+	ImGui::SliderInt("render spi", &_samples, 1, 1000);
+	ImGui::SliderInt("render fps", &_fps, 30, 120);
+	if(_path.size() && ImGui::Button("try full path"))
+	{
+		_scene->getCamera()->setPosition(_path[0].pos);	
+		_scene->getCamera()->setDirection(_path[0].dir.x, _path[0].dir.y);	
+		_win->setFrameCount(-1);
+		_curSplitStart = glfwGetTime();
+		_curPathIndex = 0;
+		_destPathIndex = _path.size() - 1;
+		_testMode = 1;
+	}
 	ImGui::Separator();
 
 	ImGui::SliderInt("minutes", &_min, 0, 2);
-	ImGui::SliderFloat("seconds", &_sec, 0, 60);
+	ImGui::SliderInt("seconds", &_sec, 0, 60);
 	if(ImGui::Button("add step"))
 		addPoint();
 	ImGui::Separator();
@@ -139,8 +252,10 @@ void Renderer::renderImgui(void)
 			_curSplitStart = glfwGetTime();
 			_curPathIndex = i - 1;
 			_destPathIndex = i;
+			_testMode = 1;
 		}
 		ImGui::Separator();
 	}
+
 	ImGui::End();
 }

srcs/class/Shader.cpp

@@ -6,7 +6,7 @@
 /*   By: ycontre <ycontre@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/10/13 20:21:13 by ycontre           #+#    #+#             */
-/*   Updated: 2025/01/19 18:58:42 by ycontre          ###   ########.fr       */
+/*   Updated: 2025/01/25 03:11:43 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -206,3 +206,13 @@ GLuint	Shader::getProgramCompute(void) const
 {
 	return (_program_compute);
 }
+
+std::vector<float> Shader::getOutputImage(void)
+{
+	std::vector<float>	res(WIDTH * HEIGHT * 4);
+
+	glBindTexture(GL_TEXTURE_2D, _output_texture);
+	glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_FLOAT, res.data());
+	glBindTexture(GL_TEXTURE_2D, 0);
+	return (res);
+}	

srcs/class/Window.cpp

@@ -6,7 +6,7 @@
 /*   By: ycontre <ycontre@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/10/13 16:16:24 by TheRed            #+#    #+#             */
-/*   Updated: 2025/01/23 16:26:39 by tomoron          ###   ########.fr       */
+/*   Updated: 2025/01/25 03:09:56 by tomoron          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -15,6 +15,7 @@
 Window::Window(Scene *scene, int width, int height, const char *title, int sleep)
 {
 	_scene = scene;
+	_fps = 0;
 	_frameCount = 0;
 	_pixelisation = 0;
 	_renderer = new Renderer(scene, this);
@@ -161,9 +162,9 @@ bool Window::shouldClose()
     return glfwWindowShouldClose(_window);
 }
 
-void		Window::rendererUpdate(void)
+void		Window::rendererUpdate(Shader &shader)
 {
-	_renderer->update();
+	_renderer->update(shader);
 }
 
 void Window::imGuiNewFrame()