~ | Better camera managment

includes/RT/Camera.hpp

@@ -15,6 +15,14 @@
 
 # include "RT.hpp"
 
+struct GPUCamera
+{
+	glm::mat4				view_matrix;
+    alignas(16) glm::vec3	camera_position;
+    float					aperture_size;
+    float					focus_distance;
+};
+
 class Camera
 {
 	public:
@@ -27,13 +35,20 @@ class Camera
 		void		processMouse(float xoffset, float yoffset, bool constrainPitch);
 		void		processKeyboard(bool forward, bool backward, bool left, bool right, bool up, bool down);
 		
-		glm::mat4	getViewMatrix();
+		void		updateCameraVectors();
+
 		glm::vec3	getPosition();
+		glm::vec2	getDirection();
+		glm::vec2	getDOV();
+		glm::mat4	getViewMatrix();
+		
+		GPUCamera	getGPUData();
 
 		void		setPosition(glm::vec3 position);
+		void		setDirection(float pitch, float yaw);
+		void		setDOV(float aperture, float focus);
 
 	private:
-		void		updateCameraVectors();
 
 		glm::vec3	_position;
 		glm::vec3	_forward;
@@ -50,6 +65,9 @@ class Camera
 		float _acceleration_rate = 40.0f;
 		float _deceleration_rate = 10000.0f;
 		float _sensitivity = 0.2f;
+
+		float _aperture_size = 0.0f;
+		float _focus_distance = 1.0f;
 };
 
 #endif

includes/RT/objects/Portal.hpp

@@ -45,11 +45,11 @@ class Portal : public Object
 					throw std::runtime_error("Missing material properties");
 
 				_position = glm::vec3(x, y, z);
-				_edge1 = glm::vec3(x1, y1, z1);
+				_up = glm::vec3(x1, y1, z1);
-				_edge2 = glm::vec3(x2, y2, z2);
+				_right = glm::vec3(x2, y2, z2);
 
-				glm::vec3 up = glm::normalize(_edge1);
+				glm::vec3 up = glm::normalize(_up);
-				glm::vec3 right = glm::normalize(_edge2);
+				glm::vec3 right = glm::normalize(_right);
 				glm::vec3 forward = glm::normalize(glm::cross(right, up));
 
 				up = normalize(glm::cross(forward, right));
@@ -64,17 +64,17 @@ class Portal : public Object
 			catch (const std::exception &e) { throw; }
 		}
 		Portal(const glm::vec3 &position, const glm::vec3 &edge1, const glm::vec3 &edge2, const int linked_portal, const int mat_index)
-			: Object(position, mat_index), _edge1(edge1), _edge2(edge2), _linked_portal(linked_portal) {}
+			: Object(position, mat_index), _up(edge1), _right(edge2), _linked_portal(linked_portal) {}
 
 		Quad		*createSupportQuad() const
 		{
 			float extension = 0.2f;
 			
-			glm::vec3 right_dir = glm::normalize(_edge1);
+			glm::vec3 right_dir = glm::normalize(_up);
-			glm::vec3 up_dir = glm::normalize(_edge2);
+			glm::vec3 up_dir = glm::normalize(_right);
 
-			float right_length = glm::length(_edge1) + extension;
+			float right_length = glm::length(_up) + extension;
-			float up_length = glm::length(_edge2) + extension;
+			float up_length = glm::length(_right) + extension;
 
 			glm::vec3 center_offset = -(right_dir * (extension / 2.0f) + up_dir * (extension / 2.0f));
 			glm::vec3 position = _position + _normal * -0.001f + center_offset;
@@ -85,8 +85,8 @@ class Portal : public Object
 			return (new Quad(position, right, up, _mat_index));
 		}
 
-		glm::vec3	getEdge1() const { return (_edge1); }
+		glm::vec3	getUp() const { return (_up); }
-		glm::vec3	getEdge2() const { return (_edge2); }
+		glm::vec3	getRight() const { return (_right); }
 		glm::vec3	getNormal() const { return (_normal); }
 		
 		glm::mat3	getTransform() const { return (_transform); }
@@ -97,8 +97,8 @@ class Portal : public Object
 		Type		getType() const override { return Type::PORTAL; }
 
 	private:
-		glm::vec3	_edge1;
+		glm::vec3	_up;
-		glm::vec3	_edge2;
+		glm::vec3	_right;
 		glm::vec3	_normal;
 
 		glm::mat3	_transform;

includes/RT/objects/Quad.hpp

@@ -39,23 +39,23 @@ class Quad : public Object
 					throw std::runtime_error("Missing material properties");
 
 				_position = glm::vec3(x, y, z);
-				_edge1 = glm::vec3(x1, y1, z1);
+				_up = glm::vec3(x1, y1, z1);
-				_edge2 = glm::vec3(x2, y2, z2);
+				_right = glm::vec3(x2, y2, z2);
 
 				_mat_index = mat_index;
 			}
 			catch (const std::exception &e) { throw; }
 		}
 		Quad(const glm::vec3 &position, const glm::vec3 &edge1, const glm::vec3 &edge2, const int mat_index)
-			: Object(position, mat_index), _edge1(edge1), _edge2(edge2) {}
+			: Object(position, mat_index), _up(edge1), _right(edge2) {}
 
-		glm::vec3	getEdge1() const { return (_edge1); }
+		glm::vec3	getUp() const { return (_up); }
-		glm::vec3	getEdge2() const { return (_edge2); }
+		glm::vec3	getRight() const { return (_right); }
 		Type		getType() const override { return Type::QUAD; }
 
 	private:
-		glm::vec3	_edge1;
+		glm::vec3	_up;
-		glm::vec3	_edge2;
+		glm::vec3	_right;
 };
 
 #endif

scenes/test.rt

@@ -1,4 +1,4 @@
-CAM 0 1 3
+CAM	0.576905 1.29122 1.46329	-6.8 -128 	0.1 2
 
 MAT 200 200 200     0.0     0.0 0.0 //white
 MAT 255 50 50     0.0     0.0 0.0 //red

shaders/compute.glsl

@@ -14,14 +14,10 @@ struct GPUObject {
 	vec3	vertex1;		// 12 + 4
 	vec3	vertex2;		// 12 + 4
 
-
 	float   radius;         // 4
 
 	int		mat_index;		// 4
 	int     type;           // 4
-
-	vec3	cube_size() { return (vertex1); }
-	int		portal_index() { return (int(radius)); }
 };
 
 struct GPUMaterial
@@ -34,6 +30,14 @@ struct GPUMaterial
 	int		texture_index;	// 4
 };
 
+struct GPUCamera
+{
+	mat4 view_matrix;
+    vec3 position;
+    float aperture_size;
+    float focus_distance;
+};
+
 layout(std430, binding = 1) buffer ObjectBuffer
 {
 	GPUObject objects[];
@@ -44,10 +48,13 @@ layout(std430, binding = 2) buffer MaterialBuffer
 	GPUMaterial materials[];
 };
 
+layout(std140) uniform CameraData
+{
+    GPUCamera camera;
+};
+
 uniform int     u_objectsNum;
 uniform vec2    u_resolution;
-uniform vec3    u_cameraPosition;
-uniform mat4    u_viewMatrix;
 uniform int		u_frameCount;
 uniform float	u_time;
 
@@ -76,7 +83,7 @@ Ray	portalRay(Ray ray, hitInfo hit)
 	vec3		relative;
 
 	portal_1 = objects[hit.obj_index];
-	portal_2 = objects[portal_1.portal_index()]; // saving memory radius = portal_index
+	portal_2 = objects[int(portal_1.radius)]; // saving memory radius = portal_index
 		
 	relative = hit.position - portal_1.position;
 	
@@ -100,7 +107,7 @@ hitInfo	traceRay(Ray ray)
 {
 	hitInfo hit;
 
-	for (int p = 0; p < 20; p++) //portals
+	for (int p = 0; p < 5; p++) //portals
 	{
 		hit.t = 1e30;
 		hit.obj_index = -1;
@@ -139,7 +146,7 @@ vec3    pathtrace(Ray ray, inout uint rng_state)
 		hitInfo hit = traceRay(ray);
 		if (hit.obj_index == -1)
 		{
-			// light += GetEnvironmentLight(ray);
+			light += GetEnvironmentLight(ray);
 			// light += vec3(135 / 255.0f, 206 / 255.0f, 235 / 255.0f); //ambient color 
 			break;
 		}
@@ -170,21 +177,18 @@ Ray initRay(vec2 uv, inout uint rng_state)
 	float fov = 90.0;
 	float focal_length = 1.0 / tan(radians(fov) / 2.0);
 	
-	vec3 origin = u_cameraPosition;
+	vec3 origin = camera.position;
 	vec3 view_space_ray = normalize(vec3(uv.x, uv.y, -focal_length));
-	vec3 ray_direction = normalize((inverse(u_viewMatrix) * vec4(view_space_ray, 0.0)).xyz);
+	vec3 ray_direction = normalize((inverse(camera.view_matrix) * vec4(view_space_ray, 0.0)).xyz);
 	
-	float focus_distance = 4.5;
+	vec3 right = vec3(camera.view_matrix[0][0], camera.view_matrix[1][0], camera.view_matrix[2][0]);
-	float aperture = 0.1;
+	vec3 up = vec3(camera.view_matrix[0][1], camera.view_matrix[1][1], camera.view_matrix[2][1]);
 
-	vec3 right = vec3(u_viewMatrix[0][0], u_viewMatrix[1][0], u_viewMatrix[2][0]);
+	vec3 focal_point = origin + ray_direction * camera.focus_distance;
-	vec3 up = vec3(u_viewMatrix[0][1], u_viewMatrix[1][1], u_viewMatrix[2][1]);
-
-	vec3 focal_point = u_cameraPosition + ray_direction * focus_distance;
 
 	float r = sqrt(randomValue(rng_state));
 	float theta = 2.0 * M_PI * randomValue(rng_state);
-	vec2 lens_point = aperture * r * vec2(cos(theta), sin(theta));
+	vec2 lens_point = camera.aperture_size * r * vec2(cos(theta), sin(theta));
 
 	origin += right * lens_point.x + up * lens_point.y;
 	ray_direction = normalize(focal_point - origin);

shaders/intersect.glsl

@@ -115,7 +115,7 @@ bool intersectTriangle(Ray ray, GPUObject obj, out hitInfo hit)
 
 bool intersectCube(Ray ray, GPUObject obj, out hitInfo hit)
 {
-    vec3 halfSize = obj.cube_size() * 0.5;
+    vec3 halfSize = obj.vertex1 * 0.5;
     vec3 rayOriginLocal = ray.origin - obj.position;
     
     vec3 invDir = 1.0 / ray.direction;

srcs/RT.cpp

@@ -28,6 +28,12 @@ int main(int argc, char **argv)
 	GLuint materialSSBO;
     glGenBuffers(1, &materialSSBO);
 
+	GLuint cameraUBO;
+	glGenBuffers(1, &cameraUBO);
+	glBindBuffer(GL_UNIFORM_BUFFER, cameraUBO);
+	glBufferData(GL_UNIFORM_BUFFER, sizeof(GPUCamera), nullptr, GL_DYNAMIC_DRAW);
+	glBindBufferBase(GL_UNIFORM_BUFFER, 0, cameraUBO);
+
 	shader.attach();
 
 	Vertex vertices[3] = {{{-1.0f, -1.0f}, {0.0f, 0.0f}},{{3.0f, -1.0f}, {2.0f, 0.0f}},{{-1.0f, 3.0f}, {0.0f, 2.0f}}};
@@ -56,12 +62,14 @@ int main(int argc, char **argv)
 		glBufferData(GL_SHADER_STORAGE_BUFFER, material_data.size() * sizeof(GPUMaterial), material_data.data(), GL_DYNAMIC_DRAW);
         glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, materialSSBO);
 
+		GPUCamera camera_data = scene.getCamera()->getGPUData();
+		glBindBuffer(GL_UNIFORM_BUFFER, cameraUBO);
+		glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(GPUCamera), &camera_data);
+
 		shader.set_int("u_frameCount", window.getFrameCount());
 		shader.set_int("u_objectsNum", object_data.size());
 		shader.set_float("u_time", (float)(glfwGetTime()));
 		shader.set_vec2("u_resolution", glm::vec2(WIDTH, HEIGHT));
-		shader.set_vec3("u_cameraPosition", scene.getCamera()->getPosition());
-		shader.set_mat4("u_viewMatrix", scene.getCamera()->getViewMatrix());
 		
 		glDispatchCompute((WIDTH + 15) / 16, (HEIGHT + 15) / 16, 1);
 		glMemoryBarrier(GL_SHADER_IMAGE_ACCESS_BARRIER_BIT);

srcs/class/Camera.cpp

@@ -95,7 +95,41 @@ glm::vec3	Camera::getPosition()
 	return (_position);
 }
 
+glm::vec2	Camera::getDirection()
+{
+	return (glm::vec2(_pitch, _yaw));
+}
+
+glm::vec2	Camera::getDOV()
+{
+	return (glm::vec2(_aperture_size, _focus_distance));
+}
+
+GPUCamera	Camera::getGPUData()
+{
+	GPUCamera data;
+
+	data.aperture_size = _aperture_size;
+	data.focus_distance = _focus_distance;
+	data.camera_position = _position;
+	data.view_matrix = getViewMatrix();
+
+	return (data);
+}
+
 void		Camera::setPosition(glm::vec3 position)
 {
 	_position = position;
 }
+
+void		Camera::setDirection(float pitch, float yaw)
+{
+	_pitch = pitch;
+	_yaw = yaw;
+}
+
+void		Camera::setDOV(float aperture, float focus)
+{
+	_aperture_size = aperture;
+	_focus_distance = focus;
+}

srcs/class/Scene.cpp

@@ -91,8 +91,8 @@ void		Scene::updateGPUData()
 		else if (obj->getType() == Object::Type::QUAD)
 		{
 			auto quad = static_cast<Quad *>(obj);
-			gpu_obj.vertex1 = quad->getEdge1();
+			gpu_obj.vertex1 = quad->getUp();
-			gpu_obj.vertex2 = quad->getEdge2();
+			gpu_obj.vertex2 = quad->getRight();
 		}
 		else if (obj->getType() == Object::Type::TRIANGLE)
 		{
@@ -110,8 +110,8 @@ void		Scene::updateGPUData()
 		else if (obj->getType() == Object::Type::PORTAL)
 		{
 			auto portal = static_cast<Portal *>(obj);
-			gpu_obj.vertex1 = portal->getEdge1();
+			gpu_obj.vertex1 = portal->getUp();
-			gpu_obj.vertex2 = portal->getEdge2();
+			gpu_obj.vertex2 = portal->getRight();
 			gpu_obj.normal = portal->getNormal();
 			gpu_obj.transform = glm::mat4(portal->getTransform());
 			

srcs/class/SceneParser.cpp

@@ -85,12 +85,30 @@ void	SceneParser::parseMaterial(std::stringstream &line)
 
 void	SceneParser::parseCamera(std::stringstream &line)
 {
-	float		x,y,z;
+	float	x,y,z;
+	float	yaw, pitch;
+	float	aperture, focus;
 	
 	if (!(line >> x >> y >> z))
 		throw std::runtime_error("Camera: Missing camera properties");
 
+	if (!(line >> yaw >> pitch))
+	{
+		yaw = 0;
+		pitch = -90;
+	}
+
+	if (!(line >> aperture >> focus))
+	{
+		aperture = 0.0;
+		focus = 1.0;
+	}
+
 	_scene->getCamera()->setPosition(glm::vec3(x, y, z));
+	_scene->getCamera()->setDirection(yaw, pitch);
+	_scene->getCamera()->setDOV(aperture, focus);
+
+	_scene->getCamera()->updateCameraVectors();
 }
 
 bool		SceneParser::parseLine(const std::string &line)

srcs/class/Window.cpp

@@ -110,6 +110,18 @@ void Window::keyCallback(GLFWwindow *window, int key, int scancode, int action,
 {
     Window* win = static_cast<Window*>(glfwGetWindowUserPointer(window));
     (void) win; (void) key; (void) scancode; (void) action; (void) mods;
+	
+	if (key == 67 && action == GLFW_PRESS)
+	{
+		glm::vec3 pos = win->_scene->getCamera()->getPosition();
+		glm::vec2 dir = win->_scene->getCamera()->getDirection();
+		glm::vec2 dov = win->_scene->getCamera()->getDOV();
+
+		std::cout << "\nCAM\t" << pos.x << " " << pos.y << " " << pos.z << "\t"
+				<< dir.x << " " << dir.y << " " << "\t"
+				<< dov.x << " " << dov.y << " " << "\t"
+				<< std::endl;
+	}
 }
 
 void Window::display()