Merge pull request 'merge graphics_api_abstraction_layer' (#3) from graphics_api_abstraction_layer into master

Reviewed-on: http://git.cubesoftware.xyz:20524/kacperks/PolyGun/pulls/3

CMakeLists.txt

@@ -14,6 +14,15 @@ include_directories("${CMAKE_BINARY_DIR}")
 configure_file("config.hpp.in" "config.hpp")
 option(BUILD_CLIENT "Build client" ON)
 option(BUILD_SERVER "Build server" ON)
+if(APPLE)
+	set(RENDERER_GL_DEFAULT OFF)
+else()
+	set(RENDERER_GL_DEFAULT ON)
+endif()
+option(RENDERER_GL "Enable OpenGL renderer" ${RENDERER_GL_DEFAULT})
+if(NOT BUILD_CLIENT)
+	set(RENDERER_GL OFF)
+endif()
 
 if(BUILD_CLIENT)
 	file(GLOB_RECURSE CLIENT_SOURCES "src/game/**.cpp")
@@ -21,10 +30,20 @@ endif()
 if(BUILD_SERVER)
 	file(GLOB_RECURSE SERVER_SOURCES "src/server/**.cpp")
 endif()
+if(RENDERER_GL)
+	file(GLOB_RECURSE RENDERER_GL_SOURCES "src/game/renderer/gl/**.cpp")
+endif()
 file(GLOB_RECURSE COMMON_SOURCES "src/common/**.cpp")
 file(GLOB_RECURSE VENDOR_SOURCES "src/vendor/**.cpp")
 
-add_executable(${PROJECT_NAME} ${CLIENT_SOURCES} ${SERVER_SOURCES} ${COMMON_SOURCES} ${VENDOR_SOURCES} src/main.cpp)
+add_executable(${PROJECT_NAME}
+	${CLIENT_SOURCES}
+	${SERVER_SOURCES}
+	${COMMON_SOURCES}
+	${VENDOR_SOURCES}
+	${RENDERER_GL_SOURCES}
+	src/main.cpp
+)
 
 if(NOT OPENGL_INCLUDE_DIR OR NOT OPENGL_LIBRARIES)
 	find_package(OpenGL REQUIRED)

config.hpp.in

@@ -24,3 +24,4 @@ SOFTWARE.
 
 #cmakedefine BUILD_CLIENT
 #cmakedefine BUILD_SERVER
+#cmakedefine RENDERER_GL

shaders/chunk_fragment.glsl

@@ -1,11 +0,0 @@
-#version 330 core
-out vec4 FragColor;
-
-in vec2 TexCoord;
-
-uniform sampler2D texture_atlas;
-
-void main()
-{
-	FragColor = texture(texture_atlas, TexCoord);
-}

shaders/chunk_vertex.glsl

@@ -1,15 +0,0 @@
-#version 330 core
-layout (location = 0) in vec3 aPos;
-layout (location = 1) in vec2 aTexCoord;
-
-out vec2 TexCoord;
-
-uniform mat4 model;
-uniform mat4 view;
-uniform mat4 projection;
-
-void main()
-{
-	gl_Position = projection * view * model * vec4(aPos, 1.0f);
-	TexCoord = vec2(aTexCoord.x, aTexCoord.y);
-}

shaders/gl/chunk_fragment.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoord;
+
+uniform sampler2D uniform_texture_num;
+
+void main()
+{
+	FragColor = texture(uniform_texture_num, TexCoord);
+}

shaders/gl/chunk_vertex.glsl

@@ -0,0 +1,15 @@
+#version 330 core
+layout (location = 0) in vec3 in_pos;
+layout (location = 1) in vec2 in_uv;
+
+out vec2 TexCoord;
+
+uniform mat4 uniform_model;
+uniform mat4 uniform_view;
+uniform mat4 uniform_projection;
+
+void main()
+{
+	gl_Position = uniform_projection * uniform_view * uniform_model * vec4(in_pos, 1.0f);
+	TexCoord = vec2(in_uv.x, in_uv.y);
+}

src/game/ecs/base_component.hpp

@@ -0,0 +1,19 @@
+#ifndef POLYGUN_ECS_BASE_COMPONENT_HPP
+#define POLYGUN_ECS_BASE_COMPONENT_HPP
+
+#include "ecs_types.hpp"
+
+namespace polygun::ecs {
+	struct BaseComponent {
+		BaseComponent() = default;
+		~BaseComponent() = default;
+
+		inline const EntityID get_id() const { return m_entity_id; }
+
+	private:
+		EntityID m_entity_id = -1;
+		friend class EntityManager;
+	};
+}
+
+#endif // POLYGUN_ECS_BASE_COMPONENT_HPP

src/game/ecs/base_system.hpp

@@ -0,0 +1,36 @@
+#ifndef POLYGUN_ECS_BASE_SYSTEM_HPP
+#define POLYGUN_ECS_BASE_SYSTEM_HPP
+
+#include "ecs_types.hpp"
+
+namespace polygun::ecs {
+
+	class BaseSystem {
+	public:
+		BaseSystem() = default;
+		virtual ~BaseSystem() = default;
+
+		inline const Signature get_signature() const { return m_signature; }
+
+		inline void erase_entity(const EntityID entity) { m_entities.erase(entity); }
+		inline void push_entity(const EntityID entity) { m_entities.insert(entity); }
+
+		template<typename T>
+		inline void add_component_signature() { m_signature.insert(CompType<T>()); }	
+
+		inline const bool is_empty() const { return (m_entities.size() == 0);}
+		inline const bool has_entity(EntityID entity) const { return (m_entities.count(entity) > 0);}
+
+		virtual void stop() {}
+		virtual void start() {}
+		virtual void render() {}
+		virtual void update() {}
+		virtual void awake() {}
+
+	protected:
+		Signature m_signature;
+		std::set<EntityID> m_entities;
+	};
+}
+
+#endif // POLYGUN_ECS_BASE_SYSTEM_HPP

src/game/ecs/component_factory.hpp

@@ -0,0 +1,60 @@
+#ifndef POLYGUN_ECS_BASE_COMPONENT_HPP
+#define POLYGUN_ECS_BASE_COMPONENT_HPP
+
+#include "base_component.hpp"
+#include "game/core.hpp"
+
+namespace polygun::ecs {
+
+    using Constructor = std::function<FactoryType()>;
+
+    class ComponentFactory {
+
+    public:
+        ~ComponentFactory() = default;
+        ComponentFactory(const ComponentFactory&) = delete;
+        ComponentFactory& operator=(const ComponentFactory&) = delete;
+        static ComponentFactory& ref() {
+            static ComponentFactory reference;
+            return reference;
+        }
+
+        auto create_component(const char* type_name) {            
+            auto it = m_registry_funcs.find(type_name);
+            assert(it != m_registry_funcs.end() && "Component Type not found in registry");
+            auto component = it->second();
+            return component;
+        }
+
+        void register_type(ComponentTypeID comp_type, const char* type_name, Constructor callback) {
+            m_registry_funcs[type_name] = callback;
+            m_registry_types[type_name] = comp_type;
+        }
+
+        const ComponentTypeID get_type_id(const char* type_name) {
+            assert(m_registry_types.find(type_name) != m_registry_types.end() && "Typename out of range");
+            return m_registry_types.at(type_name);
+        }
+
+    private:
+        ComponentFactory() = default;
+
+    private:
+        std::map<const char*, Constructor> m_registry_funcs;
+        std::map<const char*, ComponentTypeID> m_registry_types;
+    };
+
+    static ComponentFactory& CompFactory = ComponentFactory::ref();
+
+    template<typename T>
+    class Registrar {
+    public:
+        Registrar(const char* type_name) {
+            const ComponentTypeID comp_type = CompType<T>();
+            CompFactory.register_type(comp_type, type_name, []()->FactoryType{ return std::move(std::make_shared<T>()); });
+        }
+    };
+
+}
+
+#endif // POLYGUN_ECS_BASE_COMPONENT_HPP

src/game/ecs/component_list.hpp

@@ -0,0 +1,53 @@
+#ifndef POLYGUN_ECS_COMP_LIST_HPP
+#define POLYGUN_ECS_COMP_LIST_HPP
+
+#include "ecs_types.hpp"
+
+namespace polygun::ecs {		
+
+	class ICompList {
+	public:
+		ICompList() = default;
+		virtual ~ICompList() = default;
+		virtual void erase(const EntityID entity) { }
+		virtual void insert(BaseComponent* component) { }
+		const ComponentTypeID get_data_type() const { return m_type_id; }
+	protected:
+		ComponentTypeID m_type_id = INVALID_TYPE_ID;
+	};
+
+	template<typename T>
+	class CompList : public ICompList {
+
+	public:
+		~CompList() = default;		
+		CompList(): m_data({}) {
+			m_type_id = CompType<T>();
+		}
+
+		void insert(BaseComponent* component) override {
+			T comp = *(static_cast<T*>(component));
+			auto it = std::find_if(m_data.begin(), m_data.end(), [&comp](const T& c) { return c.get_id() == comp.get_id(); });
+			assert(it == m_data.end() && "Trying to insert duplicate of component!");		
+			m_data.push_back(comp);
+		}
+
+		T& get(const EntityID entity) {
+			auto it = std::find_if(m_data.begin(), m_data.end(), [&](const T& comp) { return comp.get_id() == entity; });
+			assert(it != m_data.end() && "Trying to get non-existing component!");				
+			return *it;
+		}
+
+		void erase(const EntityID entity) override {
+			auto it = std::find_if(m_data.begin(), m_data.end(), [&entity](const T& comp) { return comp.get_id() == entity; });
+			if (it != m_data.end()) {
+				m_data.erase(it);
+			}
+		}		
+
+	private:	
+		std::vector<T> m_data;		
+	};
+}
+
+#endif // POLYGUN_ECS_COMP_LIST_HPP

src/game/ecs/ecs_types.hpp

@@ -0,0 +1,49 @@
+#ifndef POLYGUN_ECS_TYPES_HPP
+#define POLYGUN_ECS_TYPES_HPP
+
+#include "game/core.hpp"
+
+namespace polygun::ecs {
+
+	class Entity;
+	class BaseSystem;
+	class BaseComponent;
+	class EntityManager;
+
+	// global constantes
+	constexpr int INVALID_TYPE_ID = 0;
+	constexpr int INVALID_ENTITY = -1;
+	constexpr int MAX_COMP_COUNT = 32;
+	constexpr int MAX_ENTITY_COUNT = 5000;
+
+	// typedefs
+	using EntityID = int;
+	using SystemTypeID = int;
+	using ComponentTypeID = int;
+	using Signature = std::set<ComponentTypeID>;
+	using FactoryType = std::shared_ptr<BaseComponent>;
+	using EntityList = std::vector<Entity>;
+	using EntityIDList = std::vector<EntityID>;
+
+	// Runtime type
+	inline int get_runtime_type_id() {
+		static int type_id = 1u;
+		return type_id++;
+	}
+
+	template<typename T>
+	inline SystemTypeID system_type() noexcept {
+		static_assert((std::is_base_of<BaseSystem, T>::value && !std::is_same<BaseSystem, T>::value), "Invalid template type");
+		static const SystemTypeID type_id = get_runtime_type_id();
+		return type_id;
+	}
+
+	template<typename T>
+	inline ComponentTypeID comp_type() noexcept {
+		static_assert((std::is_base_of<BaseComponent, T>::value && !std::is_same<BaseComponent, T>::value), "Invalid template type");
+		static const ComponentTypeID type_id = get_runtime_type_id();
+		return type_id;
+	}
+}
+
+#endif // POLYGUN_ECS_TYPES_HPP

src/game/engine/engine.cpp

@@ -1,3 +1,27 @@
+/*
+PolyGun
+
+Copyright (c) 2023 kacperks https://kacperks.cubesoftware.xyz
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
 #include "engine.hpp"
 
 #include "game/audio/audio.hpp"
@@ -19,29 +43,24 @@ namespace polygun::engine {
 	void framebuffer_size_callback(GLFWwindow* window, int width, int height) { glViewport(0, 0, width, height); glfwGetWindowSize(window, &sizex, &sizey);}
 
 	Engine::Engine() :
-		m_screen_manager(*this)
+		m_screen_manager(*this),
+		m_window(nullptr),
+		m_master_renderer()
 	{}
 
 	void Engine::init() {
 		audio::init();
 
 		glfwInit();
-		glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
-		glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
-		glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
 
 		m_window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "Polygun", NULL, NULL);
 		if (m_window == NULL) {
 			glfwTerminate();
 			LOG_FATAL("Failed to create GLFW window");
 		}
-		glfwMakeContextCurrent(m_window);
 		glfwSetFramebufferSizeCallback(m_window, framebuffer_size_callback);
 
-		if (glewInit() != GLEW_OK) {
-			glfwTerminate();
-			LOG_FATAL("GLEW init failed");
-		}
+		m_master_renderer.init(m_window);
 
 		// Setup Dear ImGui context
 

src/game/engine/engine.hpp

@@ -1,3 +1,27 @@
+/*
+PolyGun
+
+Copyright (c) 2023 kacperks https://kacperks.cubesoftware.xyz
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
 #ifndef POLYGUN_ENGINE_HPP
 #define POLYGUN_ENGINE_HPP
 
@@ -6,6 +30,7 @@
 
 #include "game/core.hpp"
 #include "game/engine/screen_manager.hpp"
+#include "game/renderer/master_renderer.hpp"
 
 namespace polygun::engine {
 
@@ -13,6 +38,7 @@ namespace polygun::engine {
 	private:
 		ScreenManager m_screen_manager;
 		GLFWwindow* m_window;
+		renderer::MasterRenderer m_master_renderer;
 
 	public:
 		Engine();
@@ -24,6 +50,8 @@ namespace polygun::engine {
 
 		ScreenManager& get_screen_manager() { return m_screen_manager; }
 		GLFWwindow* get_window() { return m_window; }
+		renderer::MasterRenderer& get_master_renderer() { return m_master_renderer; }
+		renderer::MeshRenderer* get_mesh_renderer() { return m_master_renderer.get_mesh_renderer(); }
 
 		static int get_screen_width();
 		static int get_screen_height();

src/game/engine/greedy_merging.hpp

@@ -1,3 +1,28 @@
+/*
+PolyGun
+
+Copyright (c) 2023 kacperks https://kacperks.cubesoftware.xyz
+Copyright (c) 2023 Looki2000 https://looki2000.cubesoftware.xyz
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
 #ifndef POLYGUN_ENGINE_GREEDY_MERGING_HPP
 #define POLYGUN_ENGINE_GREEDY_MERGING_HPP
 

src/game/engine/player_camera.cpp

@@ -1,11 +1,13 @@
 #include "game/engine/player_camera.hpp"
 
+#include "game/engine/engine.hpp"
+
 using namespace polygun::engine;
 
 static float mx,my;
 float pitch_cos;
 
-Camera::Camera(glm::vec3 position, glm::vec3 up, float yaw, float pitch) :
+PlayerCamera::PlayerCamera(glm::vec3 position, glm::vec3 up, float yaw, float pitch) :
 	m_position(position),
 	m_front(glm::vec3(0.0f, 0.0f, -1.0f)),
 	m_movement_front(),
@@ -24,7 +26,7 @@ Camera::Camera(glm::vec3 position, glm::vec3 up, float yaw, float pitch) :
 	update_camera_vectors();
 }
 
-Camera::Camera(float pos_x, float pos_y, float pos_z, float up_x, float up_y, float up_z, float yaw, float pitch) :
+PlayerCamera::PlayerCamera(float pos_x, float pos_y, float pos_z, float up_x, float up_y, float up_z, float yaw, float pitch) :
 	m_position(pos_x, pos_y, pos_z),
 	m_front(glm::vec3(0.0f, 0.0f, -1.0f)),
 	m_movement_front(),
@@ -43,7 +45,7 @@ Camera::Camera(float pos_x, float pos_y, float pos_z, float up_x, float up_y, fl
 	update_camera_vectors();
 }
 
-void Camera::update(bool reset) {
+void PlayerCamera::update(bool reset) {
 	if (m_first_mouse || reset) {
 		m_last_x = mx;
 		m_last_y = my;
@@ -62,7 +64,7 @@ void Camera::update(bool reset) {
 
 }
 
-void Camera::process_movement(camera_movement direction, float delta_time) {
+void PlayerCamera::process_movement(camera_movement direction, float delta_time) {
 	float velocity = m_movement_speed * delta_time;
 	if (direction == FORWARD)
 		m_position += glm::vec3(m_movement_front.x, 0.0f, m_movement_front.y) * velocity;
@@ -76,9 +78,11 @@ void Camera::process_movement(camera_movement direction, float delta_time) {
 		m_position += glm::vec3(0.0f, 1.0f, 0.0f) * velocity;
 	if (direction == DOWN)
 		m_position += glm::vec3(0.0f, -1.0f, 0.0f) * velocity;
+
+	m_view = glm::lookAt(m_position, m_position + m_front, m_up);
 }
 
-void Camera::process_mouse_movement(float x_offset, float y_offset, GLboolean constrain_pitch) {
+void PlayerCamera::process_mouse_movement(float x_offset, float y_offset, GLboolean constrain_pitch) {
 	x_offset *= m_mouse_sensitivity;
 	y_offset *= m_mouse_sensitivity;
 
@@ -95,7 +99,7 @@ void Camera::process_mouse_movement(float x_offset, float y_offset, GLboolean co
 	update_camera_vectors();
 }
 
-void Camera::process_mouse_scroll(float y_offset) {
+void PlayerCamera::process_mouse_scroll(float y_offset) {
 	m_fov -= y_offset;
 	if (m_fov < 1.0f)
 		m_fov = 1.0f;
@@ -103,12 +107,12 @@ void Camera::process_mouse_scroll(float y_offset) {
 		m_fov = 45.0f;
 }
 
-void Camera::mouse_callback(GLFWwindow* window, double x_pos_in, double y_pos_in) {
+void PlayerCamera::mouse_callback(GLFWwindow* window, double x_pos_in, double y_pos_in) {
 	mx = static_cast<float>(x_pos_in);
 	my = static_cast<float>(y_pos_in);
 }
 
-void Camera::update_camera_vectors() {
+void PlayerCamera::update_camera_vectors() {
 	glm::vec3 front;
 	pitch_cos = cos(glm::radians(m_pitch));
 
@@ -122,4 +126,7 @@ void Camera::update_camera_vectors() {
 	m_front = glm::normalize(front);
 	m_right = glm::normalize(glm::cross(m_front, m_worldup));  
 	m_up    = glm::normalize(glm::cross(m_right, m_front));
+
+	m_view = glm::lookAt(m_position, m_position + m_front, m_up);
+	m_projection = glm::perspective(glm::radians(m_fov), (float)engine::Engine::get_screen_width() / (float)engine::Engine::get_screen_height(), 0.1f, 100.0f);
 }

src/game/engine/player_camera.hpp

@@ -1,6 +1,8 @@
 #ifndef POLYGUN_ENGINE_CAMERA_H
 #define POLYGUN_ENGINE_CAMERA_H
 
+#include "game/renderer/camera.hpp"
+
 #include "game/core.hpp"
 
 namespace polygun::engine {
@@ -19,7 +21,7 @@ namespace polygun::engine {
 	const float SENSITIVITY =  0.1f;
 	const float FOV        =  90.0f;
 
-	class Camera {
+	class PlayerCamera final : public renderer::Camera {
 	public:
 		glm::vec3 m_position;
 		glm::vec3 m_front;
@@ -33,12 +35,9 @@ namespace polygun::engine {
 		float m_mouse_sensitivity;
 		float m_fov;
 
-		Camera(glm::vec3 position = glm::vec3(-0.5f, 0.25f, -0.5f), glm::vec3 up = glm::vec3(0.0f, 1.0f, 0.0f), float yaw = YAW, float pitch = PITCH);
-		Camera(float pos_x, float pos_y, float pos_z, float up_x, float up_y, float up_z, float yaw, float pitch);
-
-		glm::mat4 get_view_matrix() const {
-			return glm::lookAt(m_position, m_position + m_front, m_up);
-		}
+	public:
+		PlayerCamera(glm::vec3 position = glm::vec3(-0.5f, 0.25f, -0.5f), glm::vec3 up = glm::vec3(0.0f, 1.0f, 0.0f), float yaw = YAW, float pitch = PITCH);
+		PlayerCamera(float pos_x, float pos_y, float pos_z, float up_x, float up_y, float up_z, float yaw, float pitch);
 
 		void update(bool reset);
 		void process_movement(camera_movement direction, float delta_time);

src/game/renderer/camera.hpp

@@ -0,0 +1,44 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef POLYGUN_RENDERER_CAMERA_HPP
+#define POLYGUN_RENDERER_CAMERA_HPP
+
+#include <glm/glm.hpp>
+
+namespace polygun::renderer {
+	class Camera {
+	public:
+		Camera() = default;
+		virtual ~Camera(){}
+
+		const glm::mat4& get_view() const { return m_view; }
+		const glm::mat4& get_projection() const { return m_projection; }
+
+	protected:
+		glm::mat4 m_view, m_projection;
+	};
+}
+
+#endif // POLYGUN_RENDERER_CAMERA_HPP

src/game/renderer/gl/gl_mesh.cpp

@@ -0,0 +1,96 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "game/renderer/gl/gl_mesh.hpp"
+
+#include "game/renderer/gl/opengl.hpp"
+
+using namespace polygun::renderer;
+
+GLMesh::GLMesh() :
+	m_vao(0),
+	m_vbo(0),
+	m_tbo(0),
+	m_ebo(0),
+	m_nbo(0),
+	m_element_count(0)
+{
+	if(GLEW_ARB_vertex_array_object)
+		glGenVertexArrays(1, &m_vao);
+}
+
+GLMesh::~GLMesh() {
+	if(GLEW_ARB_vertex_array_object)
+		glDeleteVertexArrays(1, &m_vao);
+	if(m_vbo>0)
+		glDeleteBuffers(1, &m_vbo);
+	if(m_ebo>0)
+		glDeleteBuffers(1, &m_ebo);
+	if(m_nbo>0)
+		glDeleteBuffers(1, &m_nbo);
+}
+
+void GLMesh::load_vertices(const std::vector<float>& vertices) {
+	if(GLEW_ARB_vertex_array_object)
+		glBindVertexArray(m_vao);
+
+	if(m_vbo==0)
+		glGenBuffers(1, &m_vbo);
+	glBindBuffer(GL_ARRAY_BUFFER, m_vbo);
+	glBufferData(GL_ARRAY_BUFFER, vertices.size()*sizeof(float), vertices.data(), GL_STATIC_DRAW);
+	if(GLEW_ARB_vertex_array_object) {
+		glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3*sizeof(float), (void*)0);
+		glEnableVertexAttribArray(0);
+	}
+}
+
+void GLMesh::load_indices(const std::vector<unsigned>& indices) {
+	if(m_ebo==0)
+		glGenBuffers(1, &m_ebo);
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ebo);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size()*sizeof(unsigned), indices.data(), GL_STATIC_DRAW);
+	m_element_count = indices.size();
+}
+
+void GLMesh::load_uvs(const std::vector<float>& uvs) {
+	if(m_tbo==0)
+		glGenBuffers(1, &m_tbo);
+	glBindBuffer(GL_ARRAY_BUFFER, m_tbo);
+	glBufferData(GL_ARRAY_BUFFER, uvs.size()*sizeof(float), uvs.data(), GL_STATIC_DRAW);
+	if(GLEW_ARB_vertex_array_object) {
+		glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2*sizeof(float), (void*)0);
+		glEnableVertexAttribArray(1);
+	}
+}
+
+void GLMesh::load_normals(const std::vector<float>& normals) {
+	if(m_nbo==0)
+		glGenBuffers(1, &m_nbo);
+	glBindBuffer(GL_ARRAY_BUFFER, m_nbo);
+	glBufferData(GL_ARRAY_BUFFER, normals.size()*sizeof(float), normals.data(), GL_STATIC_DRAW);
+	if(GLEW_ARB_vertex_array_object) {
+		glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 3*sizeof(float), (void*)0);
+		glEnableVertexAttribArray(2);
+	}
+}

src/game/renderer/gl/gl_mesh.hpp

@@ -0,0 +1,49 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef POLYGUN_RENDERER_GL_MESH_HPP
+#define POLYGUN_RENDERER_GL_MESH_HPP
+
+#include "game/renderer/mesh.hpp"
+
+namespace polygun::renderer {
+	class GLMesh final : public Mesh {
+		friend class GLMeshRenderer;
+	public:
+		GLMesh();
+		virtual ~GLMesh() override;
+
+	private:
+		unsigned m_vao, m_vbo, m_tbo, m_nbo, m_ebo;
+		unsigned m_element_count;
+
+	protected:
+		virtual void load_vertices(const std::vector<float>& vertices) override;
+		virtual void load_indices(const std::vector<unsigned>& indices) override;
+		virtual void load_uvs(const std::vector<float>& uvs) override;
+		virtual void load_normals(const std::vector<float>& normals) override;
+	};
+}
+
+#endif // POLYGUN_RENDERER_GL_MESH_HPP

src/game/renderer/gl/gl_mesh_renderer.cpp

@@ -0,0 +1,187 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "game/renderer/gl/gl_mesh_renderer.hpp"
+
+#include "game/renderer/gl/gl_mesh.hpp"
+#include "game/renderer/gl/gl_shader.hpp"
+#include "game/renderer/gl/gl_texture.hpp"
+#include "game/renderer/camera.hpp"
+#include "common/logger.hpp"
+
+using namespace polygun::renderer;
+
+GLMeshRenderer::GLMeshRenderer() :
+	m_shader(nullptr),
+	m_prev_mesh(nullptr),
+	m_prev_texture(nullptr)
+{}
+
+void GLMeshRenderer::render(Mesh* mesh, const glm::vec4& color) {
+	if(!m_shader) {
+		LOG_ERROR("Attempt to render mesh without active shader!");
+		return;
+	}
+
+	GLMesh* gl_mesh = static_cast<GLMesh*>(mesh);
+	if(mesh!=m_prev_mesh) {
+		if(m_prev_mesh && !GLEW_ARB_vertex_array_object) {
+			glDisableVertexAttribArray(m_shader->get_attrib_location("in_pos"));
+			check_gl();
+			if(mesh->has_normals()) {
+				glDisableVertexAttribArray(m_shader->get_attrib_location("in_normal"));
+				check_gl();
+			}
+		}
+
+		if(GLEW_ARB_vertex_array_object) {
+			glBindVertexArray(gl_mesh->m_vao);
+			check_gl();
+		}
+
+		if(!GLEW_ARB_vertex_array_object) {		
+			legacy_prepare_mesh_array_buffer(gl_mesh->m_vbo, 3, "in_pos");
+			if(mesh->has_normals())
+				legacy_prepare_mesh_array_buffer(gl_mesh->m_nbo, 3, "in_normal");
+		}
+		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gl_mesh->m_ebo);
+		check_gl();
+
+		m_prev_mesh = mesh;
+	}
+
+	m_shader->set_uniform("uniform_model", m_transform);
+	check_gl();
+	m_shader->set_uniform("uniform_view", m_camera->get_view());
+	check_gl();
+	m_shader->set_uniform("uniform_projection", m_camera->get_projection());
+	check_gl();
+	m_shader->set_uniform("uniform_color", color);
+	check_gl();
+
+	glDrawElements(GL_TRIANGLES, gl_mesh->m_element_count, GL_UNSIGNED_INT, nullptr);
+	check_gl();
+
+	m_transform = glm::mat4(1);
+}
+
+void GLMeshRenderer::render_textured(Mesh* mesh, Texture* texture) {
+	if(!m_shader) {
+		LOG_ERROR("Attempt to render mesh without active shader!");
+		return;
+	}
+
+	GLMesh* gl_mesh = static_cast<GLMesh*>(mesh);
+	if(mesh!=m_prev_mesh) {
+		if(!mesh->has_texture_uvs()) {
+			LOG_ERROR("Attempt to render mesh without texture as textured!");
+			return;
+		}
+
+		if(m_prev_mesh && !GLEW_ARB_vertex_array_object) {
+			glDisableVertexAttribArray(m_shader->get_attrib_location("in_pos"));
+			glDisableVertexAttribArray(m_shader->get_attrib_location("in_uv"));
+			if(mesh->has_normals())
+				glDisableVertexAttribArray(m_shader->get_attrib_location("in_normal"));
+		}
+
+		if(GLEW_ARB_vertex_array_object) {
+			glBindVertexArray(gl_mesh->m_vao);
+			check_gl();
+		}
+
+		if(!GLEW_ARB_vertex_array_object) {		
+			legacy_prepare_mesh_array_buffer(gl_mesh->m_vbo, 3, "in_pos");
+			legacy_prepare_mesh_array_buffer(gl_mesh->m_tbo, 2, "in_uv");
+			if(mesh->has_normals())
+				legacy_prepare_mesh_array_buffer(gl_mesh->m_nbo, 3, "in_normal");
+		}
+		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gl_mesh->m_ebo);
+		check_gl();
+
+		m_prev_mesh = mesh;
+	}
+
+	if(texture!=m_prev_texture) {
+		GLTexture* gl_texture = static_cast<GLTexture*>(texture);
+		glActiveTexture(GL_TEXTURE0);
+		gl_texture->bind();
+
+		m_shader->set_uniform("uniform_texture_num", 0);
+		check_gl();
+
+		m_prev_texture = texture;
+	}
+
+	m_shader->set_uniform("uniform_model", m_transform);
+	check_gl();
+
+	glDrawElements(GL_TRIANGLES, gl_mesh->m_element_count, GL_UNSIGNED_INT, nullptr);
+	check_gl();
+
+	m_transform = glm::mat4(1);
+}
+
+void GLMeshRenderer::render_with_multiple_textures(Mesh* mesh, const std::vector<Texture*>& textures) {
+	// TODO
+}
+
+void GLMeshRenderer::set_shader(Shader* shader) {
+	m_shader = static_cast<GLShader*>(shader);
+	m_shader->bind();
+	check_gl();
+}
+
+void GLMeshRenderer::set_camera(Camera* camera) {
+	m_camera = camera;
+	if(m_shader) {
+		m_shader->set_uniform("uniform_view", m_camera->get_view());
+		check_gl();
+		m_shader->set_uniform("uniform_projection", m_camera->get_projection());
+		check_gl();
+	}
+}
+
+void GLMeshRenderer::set_3d_rendering_mode(bool enable) {
+	if(enable)
+		glEnable(GL_DEPTH_TEST);
+	else
+		glDisable(GL_DEPTH_TEST);
+	check_gl();
+}
+
+void GLMeshRenderer::legacy_prepare_mesh_array_buffer(unsigned buffer, unsigned attrib_size, const std::string& attrib_name) {
+	glBindBuffer(GL_ARRAY_BUFFER, buffer);
+	check_gl();
+	glVertexAttribPointer(m_shader->get_attrib_location(attrib_name.c_str()), attrib_size, GL_FLOAT, GL_FALSE, 0, (void*)0);
+	check_gl();
+	glEnableVertexAttribArray(m_shader->get_attrib_location(attrib_name.c_str()));
+	check_gl();
+}
+
+void GLMeshRenderer::check_gl() {	
+	GLenum error = glGetError();
+	if(error!=GL_NO_ERROR)
+		LOG_ERROR("Previous OpenGL operation failed with code: %d", error);
+}

src/game/renderer/gl/gl_mesh_renderer.hpp

@@ -0,0 +1,56 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef POLYGUN_RENDERER_GL_MESH_RENDERER_HPP
+#define POLYGUN_RENDERER_GL_MESH_RENDERER_HPP
+
+#include "game/renderer/mesh_renderer.hpp"
+
+#include <string>
+
+namespace polygun::renderer {
+	class GLShader;
+	class GLMeshRenderer final : public MeshRenderer {
+	public:
+		GLMeshRenderer();
+
+		virtual void render(Mesh* mesh, const glm::vec4& color) override;
+		virtual void render_textured(Mesh* mesh, Texture* texture) override;
+		virtual void render_with_multiple_textures(Mesh* mesh, const std::vector<Texture*>& textures) override;
+		virtual void set_shader(Shader* shader) override;
+		virtual void set_camera(Camera* camera) override;
+		virtual void set_3d_rendering_mode(bool enable) override;
+
+	private:
+		GLShader* m_shader;
+		Mesh* m_prev_mesh;
+		Texture* m_prev_texture;
+
+	private:
+		void legacy_prepare_mesh_array_buffer(unsigned buffer, unsigned attrib_size, const std::string& attrib_name);
+		static void check_gl();
+	};
+}
+
+#endif // POLYGUN_RENDERER_GL_MESH_RENDERER_HPP

src/game/renderer/gl/gl_shader.cpp

@@ -0,0 +1,183 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+              2023 kacperks
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "game/renderer/gl/gl_shader.hpp"
+
+#include <fstream>
+#include <sstream>
+
+#include "common/logger.hpp"
+
+using namespace polygun::renderer;
+
+GLShader::GLShader() :
+	m_program(glCreateProgram()),
+	m_uniform_locations(),
+	m_attrib_locations()
+{}
+
+GLShader::~GLShader() {
+	glDeleteProgram(m_program);
+}
+
+void GLShader::bind() {
+	glUseProgram(m_program);
+}
+
+void GLShader::set_uniform(const GLchar* u_name, unsigned int value) {
+	glUniform1i(get_uniform_location(u_name), value);
+}
+
+void GLShader::set_uniform(const GLchar* u_name, int value) {
+	glUniform1i(get_uniform_location(u_name), value);
+}
+
+void GLShader::set_uniform(const GLchar* u_name, GLfloat value) {
+	glUniform1i(get_uniform_location(u_name), value);
+}
+
+void GLShader::set_uniform(const GLchar* u_name, GLfloat x, GLfloat y) {
+	glUniform2f(get_uniform_location(u_name), x, y);
+}
+
+void GLShader::set_uniform(const GLchar* u_name, GLfloat x, GLfloat y, GLfloat z) {
+	glUniform3f(get_uniform_location(u_name), x, y, z);
+}    
+
+void GLShader::set_uniform(const GLchar* u_name, const glm::vec3& vector) {
+	glUniform3f(get_uniform_location(u_name), vector.x, vector.y, vector.z);
+}
+
+void GLShader::set_uniform(const GLchar* u_name, GLfloat x, GLfloat y, GLfloat z, GLfloat w) {
+	glUniform4f(get_uniform_location(u_name), x, y, z, w);
+}
+
+void GLShader::set_uniform(const GLchar* name, const glm::mat4 &mat) {
+	glUniformMatrix4fv(get_uniform_location(name), 1, GL_FALSE, &mat[0][0]);
+}
+
+void GLShader::set_uniform(const GLchar* u_name, const glm::vec2& vector) {
+	glUniform2f(get_uniform_location(u_name), vector.x, vector.y);
+}
+
+void GLShader::set_uniform(const GLchar* u_name, const glm::vec4& vector){
+	glUniform4f(get_uniform_location(u_name), vector.x, vector.y, vector.z, vector.w);
+}
+
+void GLShader::set_uniform(const GLchar* u_name, GLuint tex2d, GLint unit){ // sample 2d
+	glActiveTexture(GL_TEXTURE0 + unit);
+	glBindTexture(GL_TEXTURE_2D, tex2d);
+	glUniform1i(get_uniform_location(u_name), unit);
+}
+
+GLuint GLShader::get_attrib_location(const GLchar* a_name) {
+	if(GLEW_ARB_vertex_array_object)
+		LOG_WARNING("get_attrib_location used even if VAO is available");
+	std::string name(a_name);
+	if(m_attrib_locations.count(name))
+		return m_attrib_locations[name];
+	return (m_attrib_locations[name] = glGetAttribLocation(m_program, a_name));
+}
+
+bool GLShader::load_from_file(const std::string& name) {
+	std::string base_shader_path;
+	// if VAO is available use shaders which use it
+	if(GLEW_ARB_vertex_array_object)
+		base_shader_path = "shaders/gl/";
+	else
+		base_shader_path = "shaders/gl2/";
+	std::string vertex_code;
+	std::string fragment_code;
+	std::ifstream v_shader_file;
+	std::ifstream f_shader_file;
+	v_shader_file.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+	f_shader_file.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+	try {
+		v_shader_file.open(base_shader_path+name+"_vertex.glsl");
+		f_shader_file.open(base_shader_path+name+"_fragment.glsl");
+		std::stringstream v_shader_stream, f_shader_stream;
+		v_shader_stream << v_shader_file.rdbuf();
+		f_shader_stream << f_shader_file.rdbuf();		
+		v_shader_file.close();
+		f_shader_file.close();
+		vertex_code = v_shader_stream.str();
+		fragment_code = f_shader_stream.str();			
+	}
+	catch (std::ifstream::failure& e) {
+		LOG_ERROR("Shader file wasn't successfuly read: %s", e.what());
+		return false;
+	}
+	const char* v_shader_code = vertex_code.c_str();
+	const char * f_shader_code = fragment_code.c_str();
+	unsigned int vertex, fragment;
+	vertex = glCreateShader(GL_VERTEX_SHADER);
+	glShaderSource(vertex, 1, &v_shader_code, NULL);
+	glCompileShader(vertex);
+	if(!check_compile_errors(vertex, "VERTEX"))
+		return false;
+	fragment = glCreateShader(GL_FRAGMENT_SHADER);
+	glShaderSource(fragment, 1, &f_shader_code, NULL);
+	glCompileShader(fragment);
+	if(!check_compile_errors(fragment, "FRAGMENT"))
+		return false;
+	m_program = glCreateProgram();
+	glAttachShader(m_program, vertex);
+	glAttachShader(m_program, fragment);
+	glLinkProgram(m_program);
+	if(!check_compile_errors(m_program, "PROGRAM"))
+		return false;
+	glDeleteShader(vertex);
+	glDeleteShader(fragment);
+	return true;
+}
+
+GLint GLShader::get_uniform_location(const GLchar* u_name) {
+	std::string name(u_name);
+	if(m_uniform_locations.count(name))
+		return m_uniform_locations[name];
+	return (m_uniform_locations[name] = glGetUniformLocation(m_program, u_name));
+}
+
+bool GLShader::check_compile_errors(GLuint shader, const std::string& type) {
+	GLint success;
+	GLchar info_log[1024];
+	if(type != "PROGRAM") {
+		glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
+		if(!success) {
+			glGetShaderInfoLog(shader, 1024, NULL, info_log);
+			LOG_ERROR("%s shader compilation error:\n%s", type.c_str(), info_log);
+			return false;
+		}
+	}
+	else {
+		glGetProgramiv(shader, GL_LINK_STATUS, &success);
+		if(!success) {
+			glGetProgramInfoLog(shader, 1024, NULL, info_log);
+			LOG_ERROR("%s compilation error:\n%s", type.c_str(), info_log);
+			return false;
+		}
+	}
+	return true;
+}

src/game/renderer/gl/gl_shader.hpp

@@ -0,0 +1,70 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+              2023 kacperks
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef POLYGUN_RENDERER_GL_SHADER_HPP
+#define POLYGUN_RENDERER_GL_SHADER_HPP
+
+#include "game/renderer/shader.hpp"
+
+#include <glm/glm.hpp>
+#include <map>
+
+#include "game/renderer/gl/opengl.hpp"
+
+namespace polygun::renderer {
+	class GLShader final : public Shader {
+	public:
+		GLShader();
+		virtual ~GLShader() override;
+
+		void bind();
+
+		void set_uniform(const GLchar* u_name, unsigned int value);
+		void set_uniform(const GLchar* u_name, int value);
+		void set_uniform(const GLchar* u_name, GLfloat value);
+		void set_uniform(const GLchar* u_name, GLfloat x, GLfloat y);
+		void set_uniform(const GLchar* u_name, const glm::vec2& vector);
+		void set_uniform(const GLchar* u_name, GLfloat x, GLfloat y, GLfloat z);
+		void set_uniform(const GLchar* u_name, const glm::vec3& vector);
+		void set_uniform(const GLchar* u_name, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+		void set_uniform(const GLchar* u_name, const glm::vec4& vector);
+		void set_uniform(const GLchar* u_name, const glm::mat4& mtx);
+		void set_uniform(const GLchar* u_name, GLuint tex2d, GLint unit); // sample 2d
+		GLuint get_attrib_location(const GLchar* a_name);
+
+		virtual bool load_from_file(const std::string& name) override;
+
+	private:
+		GLuint m_program;
+		std::map<std::string, GLint> m_uniform_locations;
+		std::map<std::string, GLuint> m_attrib_locations;
+
+	private:
+		GLint get_uniform_location(const GLchar* u_name);
+		bool check_compile_errors(GLuint shader, const std::string& type);
+	};
+}
+
+#endif // POLYGUN_RENDERER_GL_SHADER_HPP

src/game/renderer/gl/gl_texture.cpp

@@ -0,0 +1,65 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "game/renderer/gl/gl_texture.hpp"
+
+#include "common/logger.hpp"
+#include "game/renderer/gl/opengl.hpp"
+
+using namespace polygun::renderer;
+
+GLTexture::GLTexture() :
+	m_id(0)
+{
+	glGenTextures(1, &m_id);
+}
+
+GLTexture::~GLTexture() {
+	glDeleteTextures(1, &m_id);
+}
+
+void GLTexture::bind() {
+	glBindTexture(GL_TEXTURE_2D, m_id);
+}
+
+bool GLTexture::load_from_pixel_data(const uint8_t* data, unsigned width, unsigned height, unsigned pixel_size) {
+	bind();
+	int format;
+	switch(pixel_size) {
+	case 3:
+		format = GL_RGB;
+		break;
+	case 4:
+		format = GL_RGBA;
+		break;
+	default:
+		LOG_ERROR("Invalid pixel size: %d", pixel_size);
+		return false;
+	}
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, format, GL_UNSIGNED_BYTE, data);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glGenerateMipmap(GL_TEXTURE_2D);
+	return true;
+}

src/game/renderer/gl/gl_texture.hpp

@@ -0,0 +1,45 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef POLYGUN_RENDERER_GL_TEXTURE_HPP
+#define POLYGUN_RENDERER_GL_TEXTURE_HPP
+
+#include "game/renderer/texture.hpp"
+
+namespace polygun::renderer {
+	class GLTexture final : public Texture {
+	public:
+		GLTexture();
+		virtual ~GLTexture() override;
+
+		void bind();
+
+		virtual bool load_from_pixel_data(const uint8_t* data, unsigned width, unsigned height, unsigned pixel_size) override;
+
+	private:
+		unsigned m_id;
+	};
+}
+
+#endif // POLYGUN_RENDERER_GL_TEXTURE_HPP

src/game/renderer/gl/opengl.hpp

@@ -0,0 +1,36 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef POLYGUN_RENDERER_OPENGL_HPP
+#define POLYGUN_RENDERER_OPENGL_HPP
+
+#if defined(__apple__)
+#include <OpenGL/glew.h>
+#include <OpenGL/gl.h>
+#else
+#include <GL/glew.h>
+#include <GL/gl.h>
+#endif
+
+#endif

src/game/renderer/master_renderer.cpp

@@ -0,0 +1,121 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "game/renderer/master_renderer.hpp"
+
+#include "common/logger.hpp"
+#if defined(RENDERER_GL)
+#include "game/renderer/gl/gl_mesh_renderer.hpp"
+#include "game/renderer/gl/gl_shader.hpp"
+#include "game/renderer/gl/gl_mesh.hpp"
+#include "game/renderer/gl/gl_texture.hpp"
+#endif
+
+using namespace polygun::renderer;
+
+#if defined(RENDERER_GL)
+static void clear_screen_impl_gl(float r, float g, float b) {
+	glClearColor(r, g, b, 1.0f);
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 
+}
+#endif
+
+MasterRenderer::MasterRenderer() :
+	m_renderer_type(RendererType::RENDERER_TYPE_GL),
+	m_clear_screen_impl(),
+	m_mesh_renderer()
+{}
+
+void MasterRenderer::init(GLFWwindow* window) {
+	bool created = false;
+	switch(m_renderer_type) {
+	case RendererType::RENDERER_TYPE_GL:
+#if defined(RENDERER_GL)
+		create_opengl_renderer(window);
+		created = true;
+#endif
+		break;
+	}
+	if(!created)
+		LOG_FATAL("Could not create any available renderer");
+	// TODO: Load requested renderer from config or determine by platform
+}
+
+void MasterRenderer::clear_screen(float r, float g, float b) {
+	m_clear_screen_impl(r, g, b);
+}
+
+Shader* MasterRenderer::create_shader() const {
+	switch(m_renderer_type) {
+	case RendererType::RENDERER_TYPE_GL:
+#if defined(RENDERER_GL)
+		return new GLShader;
+#else
+		LOG_FATAL("Requested creating GLShader while OpenGL renderer is not available!");
+		break;
+#endif
+	}
+	return nullptr;
+}
+
+Mesh* MasterRenderer::create_mesh() const {
+	switch(m_renderer_type) {
+	case RendererType::RENDERER_TYPE_GL:
+#if defined(RENDERER_GL)
+		return new GLMesh;
+#else
+		LOG_FATAL("Requested creating GLMesh while OpenGL renderer is not available!");
+		break;
+#endif
+	}
+	return nullptr;
+}
+
+Texture* MasterRenderer::create_texture() const {
+	switch(m_renderer_type) {
+	case RendererType::RENDERER_TYPE_GL:
+#if defined(RENDERER_GL)
+		return new GLTexture;
+#else
+		LOG_FATAL("Requested creating GLTexture while OpenGL renderer is not available!");
+		break;
+#endif
+	}
+	return nullptr;
+}
+
+#if defined(RENDERER_GL)
+void MasterRenderer::create_opengl_renderer(GLFWwindow* window) {
+	m_clear_screen_impl = clear_screen_impl_gl;
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+	glfwMakeContextCurrent(window);
+	if (glewInit() != GLEW_OK) {
+		glfwTerminate();
+		LOG_FATAL("GLEW init failed");
+	}
+	m_mesh_renderer.reset(new GLMeshRenderer);
+}
+#endif

src/game/renderer/master_renderer.hpp

@@ -0,0 +1,70 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef POLYGUN_RENDERER_MASTER_RENDERER_HPP
+#define POLYGUN_RENDERER_MASTER_RENDERER_HPP
+
+#include <memory>
+#include <functional>
+#include <config.hpp>
+#define GLFW_INCLUDE_NONE
+#include <GLFW/glfw3.h>
+
+#include "game/renderer/mesh_renderer.hpp"
+
+namespace polygun::renderer {
+	class Shader;
+	class Mesh;
+	class Texture;
+	enum RendererType {
+		RENDERER_TYPE_GL
+	};
+	class MasterRenderer final {
+	public:
+		MasterRenderer();
+		~MasterRenderer() = default;
+
+		void init(GLFWwindow* window);
+		// FIXME: Move clear_screen to UIRenderer
+		void clear_screen(float r, float g, float b);
+
+		MeshRenderer* get_mesh_renderer() { return m_mesh_renderer.get(); }
+
+		Shader* create_shader() const;
+		Mesh* create_mesh() const;
+		Texture* create_texture() const;
+
+	private:
+		RendererType m_renderer_type;
+		std::function<void(float, float, float)> m_clear_screen_impl;
+		std::unique_ptr<MeshRenderer> m_mesh_renderer;
+
+	private:
+#if defined(RENDERER_GL)
+		void create_opengl_renderer(GLFWwindow* window);
+#endif
+	};
+}
+
+#endif // POLYGUN_RENDERER_MASTER_RENDERER_HPP

src/game/renderer/mesh.cpp

@@ -0,0 +1,51 @@
+/*
+PolyGun
+
+Copyright (c) 2023 kacperks
+              2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "game/renderer/mesh.hpp"
+
+using namespace polygun::renderer;
+
+Mesh::Mesh() :
+	m_has_texture_uvs(false),
+	m_has_normals(false)
+{}
+
+void Mesh::load_from_memory(const std::vector<float>& vertices, const std::vector<unsigned>& indices) {
+	load_vertices(vertices);
+	load_indices(indices);
+}
+
+void Mesh::load_from_memory(const std::vector<float>& vertices, const std::vector<unsigned>& indices, const std::vector<float>& uvs) {
+	load_from_memory(vertices, indices);
+	load_uvs(uvs);
+	m_has_texture_uvs = true;
+}
+
+void Mesh::load_from_memory(const std::vector<float>& vertices, const std::vector<unsigned>& indices, const std::vector<float>& uvs, const std::vector<float>& normals) {
+	load_from_memory(vertices, indices, uvs);
+	load_normals(normals);
+	m_has_texture_uvs = true;
+	m_has_normals = true;
+}

src/game/renderer/mesh.hpp

@@ -1,10 +1,55 @@
+/*
+PolyGun
+
+Copyright (c) 2023 kacperks
+              2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
 #ifndef POLUGUN_RENDERER_MESH_HPP
 #define POLUGUN_RENDERER_MESH_HPP
 
-#include "../core.hpp"
+#include <vector>
 
 namespace polygun::renderer {
-	
+	class Mesh {
+	public:
+		Mesh();
+		virtual ~Mesh(){}
+
+		void load_from_memory(const std::vector<float>& vertices, const std::vector<unsigned>& indices);
+		void load_from_memory(const std::vector<float>& vertices, const std::vector<unsigned>& indices, const std::vector<float>& uvs);
+		void load_from_memory(const std::vector<float>& vertices, const std::vector<unsigned>& indices, const std::vector<float>& uvs, const std::vector<float>& normals);
+
+		bool has_texture_uvs() const { return m_has_texture_uvs; }
+		bool has_normals() const { return m_has_normals; }
+
+	private:
+		bool m_has_texture_uvs, m_has_normals;
+
+	protected:
+		virtual void load_vertices(const std::vector<float>& vertices) = 0;
+		virtual void load_indices(const std::vector<unsigned>& indices) = 0;
+		virtual void load_uvs(const std::vector<float>& uvs) = 0;
+		virtual void load_normals(const std::vector<float>& normals) = 0;
+	};
 }
 
-#endif // POLUGUN_RENDERER_MESH_HPP
+#endif // POLUGUN_RENDERER_MESH_HPP

src/game/renderer/mesh_renderer.cpp

@@ -0,0 +1,58 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "game/renderer/mesh_renderer.hpp"
+
+#include <glm/gtc/matrix_transform.hpp>
+
+using namespace polygun::renderer;
+
+MeshRenderer::MeshRenderer() :
+	m_camera(nullptr),
+	m_transform(1)
+{}
+
+void MeshRenderer::translate(const glm::vec3& pos) {
+	m_transform = glm::translate(m_transform, pos);
+}
+
+void MeshRenderer::translate(const glm::vec2& pos) {
+	translate(glm::vec3(pos.x, pos.y, 0));
+}
+
+void MeshRenderer::rotate(const glm::vec3& rot, float angle) {
+	m_transform = glm::rotate(m_transform, angle, rot);
+}
+
+void MeshRenderer::rotate(const glm::vec2& rot, float angle) {
+	rotate(glm::vec3(rot.x, rot.y, 0), angle);
+}
+
+void MeshRenderer::scale(const glm::vec3& scl) {
+	m_transform = glm::scale(m_transform, scl);
+}
+
+void MeshRenderer::scale(const glm::vec2& scl) {
+	scale(glm::vec3(scl.x, scl.y, 1));
+}

src/game/renderer/mesh_renderer.hpp

@@ -0,0 +1,61 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef POLYGUN_RENDERER_MESH_RENDERER_HPP
+#define POLYGUN_RENDERER_MESH_RENDERER_HPP
+
+#include <glm/glm.hpp>
+#include <vector>
+
+namespace polygun::renderer {
+	class Mesh;
+	class Texture;
+	class Camera;
+	class Shader;
+	class MeshRenderer {
+	public:
+		MeshRenderer();
+		virtual ~MeshRenderer(){}
+
+		void translate(const glm::vec3& pos);
+		void translate(const glm::vec2& pos);
+		void rotate(const glm::vec3& rot, float angle);
+		void rotate(const glm::vec2& rot, float angle);
+		void scale(const glm::vec3& scl);
+		void scale(const glm::vec2& scl);
+
+		virtual void render(Mesh* mesh, const glm::vec4& color) = 0;
+		virtual void render_textured(Mesh* mesh, Texture* texture) = 0;
+		virtual void render_with_multiple_textures(Mesh* mesh, const std::vector<Texture*>& textures) = 0;
+		virtual void set_shader(Shader* shader) = 0;
+		virtual void set_camera(Camera* camera) = 0;
+		virtual void set_3d_rendering_mode(bool enable) = 0;
+
+	protected:
+		Camera* m_camera;
+		glm::mat4 m_transform;
+	};
+}
+
+#endif // POLYGUN_RENDERER_MESH_RENDERER_HPP

src/game/renderer/shader.cpp

@@ -1,130 +0,0 @@
-#include "game/renderer/shader.hpp"
-
-namespace polygun::renderer {
-	Shader::Shader() :
-		m_program(0)
-	{}
-
-	Shader::Shader(const GLuint id) :
-		m_program(id)
-	{}
-
-	Shader::Shader(const char* vertex_path, const char* fragment_path) {
-			std::string vertex_code;
-			std::string fragment_code;
-			std::ifstream v_shader_file;
-			std::ifstream f_shader_file;
-			v_shader_file.exceptions(std::ifstream::failbit | std::ifstream::badbit);
-			f_shader_file.exceptions(std::ifstream::failbit | std::ifstream::badbit);
-			try {
-				v_shader_file.open(vertex_path);
-				f_shader_file.open(fragment_path);
-				std::stringstream v_shader_stream, f_shader_stream;
-				v_shader_stream << v_shader_file.rdbuf();
-				f_shader_stream << f_shader_file.rdbuf();		
-				v_shader_file.close();
-				f_shader_file.close();
-				vertex_code = v_shader_stream.str();
-				fragment_code = f_shader_stream.str();			
-			}
-			catch (std::ifstream::failure& e) {
-				std::cout << "ERROR::SHADER::FILE_NOT_SUCCESFULLY_READ: " << e.what() << std::endl;
-			}
-			const char* v_shader_code = vertex_code.c_str();
-			const char * f_shader_code = fragment_code.c_str();
-			unsigned int vertex, fragment;
-			vertex = glCreateShader(GL_VERTEX_SHADER);
-			glShaderSource(vertex, 1, &v_shader_code, NULL);
-			glCompileShader(vertex);
-			check_compile_errors(vertex, "VERTEX");
-			fragment = glCreateShader(GL_FRAGMENT_SHADER);
-			glShaderSource(fragment, 1, &f_shader_code, NULL);
-			glCompileShader(fragment);
-			check_compile_errors(fragment, "FRAGMENT");
-			m_program = glCreateProgram();
-			glAttachShader(m_program, vertex);
-			glAttachShader(m_program, fragment);
-			glLinkProgram(m_program);
-			check_compile_errors(m_program, "PROGRAM");
-			glDeleteShader(vertex);
-			glDeleteShader(fragment);
-
-	}
-
-	Shader::~Shader() {
-		glDeleteProgram(m_program);
-	}
-
-	void Shader::bind() {
-		glUseProgram(m_program);
-	}
-
-	void Shader::unbind() {
-		glUseProgram(0);
-	}
-
-	void Shader::set_uniform(const GLchar* u_name, unsigned int value) {
-		glUniform1i(glGetUniformLocation(m_program, u_name), value);
-	}
-
-	void Shader::set_uniform(const GLchar* u_name, int value) {
-		glUniform1i(glGetUniformLocation(m_program, u_name), value);
-	}
-
-	void Shader::set_uniform(const GLchar* u_name, GLfloat value) {
-		glUniform1i(glGetUniformLocation(m_program, u_name), value);
-	}
-
-	void Shader::set_uniform(const GLchar* u_name, GLfloat x, GLfloat y) {
-		glUniform2f(glGetUniformLocation(m_program, u_name), x, y);
-	}
-
-	void Shader::set_uniform(const GLchar* u_name, GLfloat x, GLfloat y, GLfloat z) {
-		glUniform3f(glGetUniformLocation(m_program, u_name), x, y, z);
-	}    
-
-	void Shader::set_uniform(const GLchar* u_name, const glm::vec3& vector) {
-		glUniform3f(glGetUniformLocation(m_program, u_name), vector.x, vector.y, vector.z);
-	}
-
-	void Shader::set_uniform(const GLchar* u_name, GLfloat x, GLfloat y, GLfloat z, GLfloat w) {
-		glUniform4f(glGetUniformLocation(m_program, u_name), x, y, z, w);
-	}
-
-	void Shader::set_uniform(const GLchar* name, const glm::mat4 &mat) {
-		glUniformMatrix4fv(glGetUniformLocation(m_program, name), 1, GL_FALSE, &mat[0][0]);
-	}
-
-	void Shader::set_uniform(const GLchar* u_name, const glm::vec2& vector) {
-		glUniform2f(glGetUniformLocation(m_program, u_name), vector.x, vector.y);
-	}
-
-	void Shader::set_uniform(const GLchar* u_name, const glm::vec4& vector){
-		glUniform4f(glGetUniformLocation(m_program, u_name), vector.x, vector.y, vector.z, vector.w);
-	}
-
-	void Shader::set_uniform(const GLchar* u_name, GLuint tex2d, GLint unit){ // sample 2d
-		glActiveTexture(GL_TEXTURE0 + unit);
-		glBindTexture(GL_TEXTURE_2D, tex2d);
-		glUniform1i(glGetUniformLocation(m_program, u_name), unit);
-	}
-
-	void Shader::check_compile_errors(GLuint shader, const std::string& type) {
-		GLint success;
-		GLchar info_log[1024];
-		if(type != "PROGRAM") {
-			glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
-			if(!success) {
-				glGetShaderInfoLog(shader, 1024, NULL, info_log);
-				std::cout << "ERROR::SHADER_COMPILATION_ERROR of type: " << type << "\n" << info_log << "\n -- --------------------------------------------------- -- " << std::endl;
-			}
-		}
-		else {
-			glGetProgramiv(shader, GL_LINK_STATUS, &success);
-			if(!success) {
-				glGetProgramInfoLog(shader, 1024, NULL, info_log);
-				std::cout << "ERROR::PROGRAM_LINKING_ERROR of type: " << type << "\n" << info_log << "\n -- --------------------------------------------------- -- " << std::endl;
-			}
-		}
-	}
-}

src/game/renderer/shader.hpp

@@ -1,38 +1,18 @@
-#ifndef POLYGUN_RENDERER_SHADER_H
-#define POLYGUN_RENDERER_SHADER_H
+#ifndef POLYGUN_RENDERER_SHADER_HPP
+#define POLYGUN_RENDERER_SHADER_HPP
 
-#include "game/core.hpp"
+#include <string>
 
 namespace polygun::renderer {
 	class Shader {
 	public:
-		Shader();
-		Shader(const GLuint id);
-		Shader(const char* vertex_path, const char* fragment_path);
-		~Shader();
-		
-		void bind();
-		void unbind();
-		void set_uniform(const GLchar* u_name, unsigned int value);
-		void set_uniform(const GLchar* u_name, int value);
-		void set_uniform(const GLchar* u_name, GLfloat value);
-		void set_uniform(const GLchar* u_name, GLfloat x, GLfloat y);
-		void set_uniform(const GLchar* u_name, const glm::vec2& vector);
-		void set_uniform(const GLchar* u_name, GLfloat x, GLfloat y, GLfloat z);
-		void set_uniform(const GLchar* u_name, const glm::vec3& vector);
-		void set_uniform(const GLchar* u_name, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
-		void set_uniform(const GLchar* u_name, const glm::vec4& vector);
-		void set_uniform(const GLchar* u_name, const glm::mat4& mtx);
-		void set_uniform(const GLchar* u_name, GLuint tex2d, GLint unit); // sample 2d
-		
-		GLuint get_uniform(const char* name) const;
-		GLuint get_program() const { return m_program; }
+		Shader() = default;
+		virtual ~Shader(){}
 
-	private:	
-		void check_compile_errors(GLuint shader, const std::string& type);
-		
-		GLuint m_program;
+		// Note: name is name of shader i.e. for example 'chunk' and not
+		// filename i.e. 'shaders/gl/chunk_fragment.glsl'
+		virtual bool load_from_file(const std::string& name) = 0;
 	};
 }
 
-#endif
+#endif // POLYGUN_RENDERER_SHADER_HPP

src/game/renderer/texture.cpp

@@ -0,0 +1,32 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "game/renderer/texture.hpp"
+
+using namespace polygun::renderer;
+
+bool Texture::load_from_file(const std::string& path) {
+	// TODO: loading PNG files with libpng
+	return false;
+}

src/game/renderer/texture.hpp

@@ -0,0 +1,48 @@
+/*
+PolyGun
+
+Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#ifndef POLYGUN_RENDERER_TEXTURE_HPP
+#define POLYGUN_RENDERER_TEXTURE_HPP
+
+#include <string>
+
+namespace polygun::renderer {
+	class Texture {
+	public:
+		Texture() = default;
+		virtual ~Texture(){}
+
+		unsigned get_width() const { return m_width; }
+		unsigned get_height() const { return m_height; }
+
+		bool load_from_file(const std::string& path);
+
+		virtual bool load_from_pixel_data(const uint8_t* data, unsigned width, unsigned height, unsigned pixel_size) = 0;
+
+	protected:
+		unsigned m_width, m_height;
+	};
+}
+
+#endif // POLYGUN_RENDERER_TEXTURE_HPP

src/game/screens/game_session_screen.cpp

@@ -6,6 +6,7 @@ Copyright (c) 2023 mrkubax10 <mrkubax10@onet.pl>
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
+
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
@@ -25,146 +26,167 @@ SOFTWARE.
 
 #include "game/screens/game_session_screen.hpp"
 
-#include <GL/gl.h>
-
 #include "common/network/network_manager.hpp"
 #include "common/logger.hpp"
 #include "game/engine/engine.hpp"
+#include "game/renderer/shader.hpp"
+#include "game/renderer/mesh.hpp"
+#include "game/renderer/texture.hpp"
 
 using namespace polygun::screens;
 
-static const float vertices[] = {
-	-0.1f, -0.1f, -0.1f,  0.0f, 0.0f,
-	0.1f, -0.1f, -0.1f,  1.0f, 0.0f,
-	0.1f,  0.1f, -0.1f,  1.0f, 1.0f,
-	0.1f,  0.1f, -0.1f,  1.0f, 1.0f,
-	-0.1f,  0.1f, -0.1f,  0.0f, 1.0f,
-	-0.1f, -0.1f, -0.1f,  0.0f, 0.0f,
+int x_d, y_d, z_d, id_d;
 
-	-0.1f, -0.1f,  0.1f,  0.0f, 0.0f,
-	0.1f, -0.1f,  0.1f,  1.0f, 0.0f,
-	0.1f,  0.1f,  0.1f,  1.0f, 1.0f,
-	0.1f,  0.1f,  0.1f,  1.0f, 1.0f,
-	-0.1f,  0.1f,  0.1f,  0.0f, 1.0f,
-	-0.1f, -0.1f,  0.1f,  0.0f, 0.0f,
 
-	-0.1f,  0.1f,  0.1f,  1.0f, 0.0f,
-	-0.1f,  0.1f, -0.1f,  1.0f, 1.0f,
-	-0.1f, -0.1f, -0.1f,  0.0f, 1.0f,
-	-0.1f, -0.1f, -0.1f,  0.0f, 1.0f,
-	-0.1f, -0.1f,  0.1f,  0.0f, 0.0f,
-	-0.1f,  0.1f,  0.1f,  1.0f, 0.0f,
 
-	0.1f,  0.1f,  0.1f,  1.0f, 0.0f,
-	0.1f,  0.1f, -0.1f,  1.0f, 1.0f,
-	0.1f, -0.1f, -0.1f,  0.0f, 1.0f,
-	0.1f, -0.1f, -0.1f,  0.0f, 1.0f,
-	0.1f, -0.1f,  0.1f,  0.0f, 0.0f,
-	0.1f,  0.1f,  0.1f,  1.0f, 0.0f,
+static const std::vector<float> vertices = {
+	-0.1f	, -0.1f, -0.1f,  
+	0.1f	, -0.1f, -0.1f,  
+	0.1f	,  0.1f, -0.1f,  
+	0.1f	,  0.1f, -0.1f,  
+	-0.1f	,  0.1f, -0.1f,  
+	-0.1f	, -0.1f, -0.1f,  
 
-	-0.1f, -0.1f, -0.1f,  0.0f, 1.0f,
-	0.1f, -0.1f, -0.1f,  1.0f, 1.0f,
-	0.1f, -0.1f,  0.1f,  1.0f, 0.0f,
-	0.1f, -0.1f,  0.1f,  1.0f, 0.0f,
-	-0.1f, -0.1f,  0.1f,  0.0f, 0.0f,
-	-0.1f, -0.1f, -0.1f,  0.0f, 1.0f,
+	-0.1f	, -0.1f,  0.1f,  
+	0.1f	, -0.1f,  0.1f,  
+	0.1f	,  0.1f,  0.1f,  
+	0.1f	,  0.1f,  0.1f,  
+	-0.1f	,  0.1f,  0.1f,  
+	-0.1f	, -0.1f,  0.1f,  
 
-	-0.1f,  0.1f, -0.1f,  0.0f, 1.0f,
-	0.1f,  0.1f, -0.1f,  1.0f, 1.0f,
-	0.1f,  0.1f,  0.1f,  1.0f, 0.0f,
-	0.1f,  0.1f,  0.1f,  1.0f, 0.0f,
-	-0.1f,  0.1f,  0.1f,  0.0f, 0.0f,
-	-0.1f,  0.1f, -0.1f,  0.0f, 1.0f
+	-0.1f	,  0.1f,  0.1f,  
+	-0.1f	,  0.1f, -0.1f,  
+	-0.1f	, -0.1f, -0.1f,  
+	-0.1f	, -0.1f, -0.1f,  
+	-0.1f	, -0.1f,  0.1f,  
+	-0.1f	,  0.1f,  0.1f,  
+
+	0.1f	,  0.1f,  0.1f,  
+	0.1f	,  0.1f, -0.1f,  
+	0.1f	, -0.1f, -0.1f,  
+	0.1f	, -0.1f, -0.1f,  
+	0.1f	, -0.1f,  0.1f,  
+	0.1f	,  0.1f,  0.1f,  
+
+	-0.1f	, -0.1f, -0.1f,  
+	0.1f	, -0.1f, -0.1f,  
+	0.1f	, -0.1f,  0.1f,  
+	0.1f	, -0.1f,  0.1f,  
+	-0.1f	, -0.1f,  0.1f,  
+	-0.1f	, -0.1f, -0.1f,  
+
+	-0.1f	,  0.1f, -0.1f,  
+	0.1f	,  0.1f, -0.1f,  
+	0.1f	,  0.1f,  0.1f,  
+	0.1f	,  0.1f,  0.1f,  
+	-0.1f	,  0.1f,  0.1f,  
+	-0.1f	,  0.1f, -0.1f,
+};
+static std::vector<unsigned> indices;
+static const std::vector<float> uvs={
+	0.0f, 0.0f,
+	1.0f, 0.0f,
+	1.0f, 1.0f,
+	1.0f, 1.0f,
+	0.0f, 1.0f,
+	0.0f, 0.0f,
+           
+	0.0f, 0.0f,
+	1.0f, 0.0f,
+	1.0f, 1.0f,
+	1.0f, 1.0f,
+	0.0f, 1.0f,
+	0.0f, 0.0f,
+           
+	1.0f, 0.0f,
+	1.0f, 1.0f,
+	0.0f, 1.0f,
+	0.0f, 1.0f,
+	0.0f, 0.0f,
+	1.0f, 0.0f,
+           
+	1.0f, 0.0f,
+	1.0f, 1.0f,
+	0.0f, 1.0f,
+	0.0f, 1.0f,
+	0.0f, 0.0f,
+	1.0f, 0.0f,
+           
+	0.0f, 1.0f,
+	1.0f, 1.0f,
+	1.0f, 0.0f,
+	1.0f, 0.0f,
+	0.0f, 0.0f,
+	0.0f, 1.0f,
+           
+	0.0f, 1.0f,
+	1.0f, 1.0f,
+	1.0f, 0.0f,
+	1.0f, 0.0f,
+	0.0f, 0.0f,	
+	0.0f, 1.0f
 };
 
+
 GameSessionScreen::GameSessionScreen() :
-	m_chunk_shader("shaders/chunk_vertex.glsl", "shaders/chunk_fragment.glsl"),
+	m_chunk_shader(nullptr),
+	m_node_mesh(nullptr),
 	m_chnk(),
 	m_camera(),
-	m_vbo(0),
-	m_vao(0),
-	m_texture_atlas(0),
 	m_is_esc_pressed(false),
 	m_was_camera_locked(false),
 	m_connection_thread(),
-	m_running(true)
+	m_running(true),
+	m_texture_atlas()
 {}
 
 void GameSessionScreen::begin() {
-	glEnable(GL_DEPTH_TEST);
+	m_chunk_shader = m_engine->get_master_renderer().create_shader();
+	m_chunk_shader->load_from_file("chunk");
 
-	glGenVertexArrays(1, &m_vao);
-	glGenBuffers(1, &m_vbo);
+	m_node_mesh = m_engine->get_master_renderer().create_mesh();
+	for(size_t i = 0; i<vertices.size(); i+=3)
+		indices.push_back((int)i/3);
+	m_node_mesh->load_from_memory(vertices, indices, uvs);
 
-	glBindVertexArray(m_vao);
+	for(int i = 0; i<sizeof(world::nodes); i++) {
+		m_texture_atlas[i] = m_engine->get_master_renderer().create_texture();
 
-	glBindBuffer(GL_ARRAY_BUFFER, m_vbo);
-	glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
-
-	// position attribute
-	glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)0);
-	glEnableVertexAttribArray(0);
-	// texture coord attribute
-	glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(3 * sizeof(float)));
-	glEnableVertexAttribArray(1);
-
-	glGenTextures(1, &m_texture_atlas);
-	glBindTexture(GL_TEXTURE_2D, m_texture_atlas);
-		
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-	int width, height, nrChannels;
-	stbi_set_flip_vertically_on_load(true); 
-	unsigned char *data = stbi_load("res/textures/gold.png", &width, &height, &nrChannels, 0);
-	if (data) {
-		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
-		glGenerateMipmap(GL_TEXTURE_2D);
+		int width, height, nrChannels;
+		stbi_set_flip_vertically_on_load(true); 
+		unsigned char *data = stbi_load(world::nodes[i-1].texture.c_str(), &width, &height, &nrChannels, 0);
+		if (data) {
+			m_texture_atlas[i]->load_from_pixel_data(data, width, height, nrChannels);
+		}
+		else {
+			data = stbi_load("res/textures/empty.png", &width, &height, &nrChannels, 0);
+			m_texture_atlas[i]->load_from_pixel_data(data, width, height, nrChannels);
+		}
+		stbi_image_free(data);
 	}
-	else {
-		std::cout << "Failed to load texture" << std::endl;
-	}
-	stbi_image_free(data);
-
-	m_chunk_shader.bind();
-	m_chunk_shader.set_uniform("texture_atlas", 0);
 
+	m_engine->get_mesh_renderer()->set_3d_rendering_mode(true);
 	glfwSetCursorPosCallback(m_engine->get_window(), m_camera.mouse_callback);
 	glfwSetInputMode(m_engine->get_window(), GLFW_CURSOR, GLFW_CURSOR_DISABLED);
 
+	m_engine->get_mesh_renderer()->set_camera(&m_camera);
+
 	// Note: uncomment to test connection with server
 	// m_connection_thread.reset(new std::thread(&GameSessionScreen::connection_thread_func, this));
 }
 
 void GameSessionScreen::render() {
+	m_engine->get_master_renderer().clear_screen(0, 0, 0);
 	// rendering
-	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
-	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 
-
-	// bind textures on corresponding texture units
-	glActiveTexture(GL_TEXTURE0);
-	glBindTexture(GL_TEXTURE_2D, m_texture_atlas);
-
-	// activate shader
-	m_chunk_shader.bind();
-
-	glm::mat4 projection = glm::perspective(glm::radians(m_camera.m_fov), (float)engine::Engine::get_screen_width() / (float)engine::Engine::get_screen_height(), 0.1f, 100.0f);
-	m_chunk_shader.set_uniform("projection", projection);
-
-	glm::mat4 view = m_camera.get_view_matrix();
-	m_chunk_shader.set_uniform("view", view);
-
-	glBindVertexArray(m_vao);
 
+	renderer::MeshRenderer* mesh_renderer = m_engine->get_mesh_renderer();
+	mesh_renderer->set_shader(m_chunk_shader);
 	for (unsigned int x = 0; x < 32; x++) {
 		for (unsigned int y = 0; y < 32; y++) {
 			for (unsigned int z = 0; z < 32; z++) {
 				if (m_chnk.get_node(glm::vec3(x,y,z))!= 0) {
-					glm::mat4 model = glm::mat4(1.0f);
-					model = glm::translate(model, glm::vec3(x/5.0f, y/5.0f, z/5.0f));
-					m_chunk_shader.set_uniform("model", model);
-					glDrawArrays(GL_TRIANGLES, 0, 36);
+					mesh_renderer->translate(glm::vec3(x/5.0f, y/5.0f, z/5.0f));
+					mesh_renderer->render_textured(m_node_mesh, m_texture_atlas[m_chnk.get_node(glm::vec3(x,y,z))]);
 				}
 			}
 		}
@@ -186,14 +208,14 @@ void GameSessionScreen::render() {
 	// Camera rot
 	ImGui::Text("Player Rot: %.3f, %.3f", m_camera.m_yaw, m_camera.m_pitch);
 
-	int x_d, y_d, z_d, id_d;
-
 	ImGui::InputInt("ID", &id_d);
-			
 	ImGui::InputInt("X", &x_d);
 	ImGui::InputInt("Y", &y_d);
 	ImGui::InputInt("Z", &z_d);
 
+	// camera fov
+	ImGui::InputFloat("FOV", &m_camera.m_fov);
+
 	if (ImGui::Button("Place Block")) {
 		m_chnk.add_node(id_d, glm::vec3(x_d, y_d, z_d));
 	}
@@ -225,18 +247,30 @@ void GameSessionScreen::update(double delta) {
 		m_is_esc_pressed = false;
 
 
-	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_W) == GLFW_PRESS)
+	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_W) == GLFW_PRESS) {
 		m_camera.process_movement(polygun::engine::FORWARD, delta);
-	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_S) == GLFW_PRESS)
+		m_engine->get_mesh_renderer()->set_camera(&m_camera);
+	}
+	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_S) == GLFW_PRESS) {
 		m_camera.process_movement(polygun::engine::BACKWARD, delta);
-	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_A) == GLFW_PRESS)
+		m_engine->get_mesh_renderer()->set_camera(&m_camera);
+	}
+	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_A) == GLFW_PRESS) {
 		m_camera.process_movement(polygun::engine::LEFT, delta);
-	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_D) == GLFW_PRESS)
+		m_engine->get_mesh_renderer()->set_camera(&m_camera);
+	}
+	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_D) == GLFW_PRESS) {
 		m_camera.process_movement(polygun::engine::RIGHT, delta);
-	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_SPACE) == GLFW_PRESS)
+		m_engine->get_mesh_renderer()->set_camera(&m_camera);
+	}
+	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_SPACE) == GLFW_PRESS) {
 		m_camera.process_movement(polygun::engine::UP, delta);
-	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS)
+		m_engine->get_mesh_renderer()->set_camera(&m_camera);
+	}
+	if (glfwGetKey(m_engine->get_window(), GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS) {
 		m_camera.process_movement(polygun::engine::DOWN, delta);
+		m_engine->get_mesh_renderer()->set_camera(&m_camera);
+	}
 			
 	if(glfwGetInputMode(m_engine->get_window(), GLFW_CURSOR) == GLFW_CURSOR_DISABLED) {
 		if(m_was_camera_locked) {
@@ -245,12 +279,13 @@ void GameSessionScreen::update(double delta) {
 		}
 		else
 			m_camera.update(false);
+		m_engine->get_mesh_renderer()->set_camera(&m_camera);
 	}
 }
 
 void GameSessionScreen::finish() {
-	glDeleteVertexArrays(1, &m_vao);
-	glDeleteBuffers(1, &m_vbo);
+	delete m_chunk_shader;
+	delete m_node_mesh;
 
 	m_running = false;
 	if(m_connection_thread.get() && m_connection_thread->joinable()) {

src/game/screens/game_session_screen.hpp

@@ -32,14 +32,18 @@ SOFTWARE.
 #include <thread>
 
 #include "game/engine/player_camera.hpp"
-#include "game/renderer/shader.hpp"
 #include "game/world/chunk.hpp"
 
+namespace polygun::renderer {
+	class Shader;
+	class Mesh;
+	class Texture;
+}
+
 namespace polygun::screens {
 	class GameSessionScreen final : public engine::Screen {
 	public:
 		GameSessionScreen();
-		~GameSessionScreen() = default;
 
 		virtual void begin() override;
 		virtual void render() override;
@@ -47,11 +51,11 @@ namespace polygun::screens {
 		virtual void finish() override;
 
 	private:
-		renderer::Shader m_chunk_shader;
+		renderer::Shader* m_chunk_shader;
+		renderer::Mesh* m_node_mesh;
 		world::Chunk m_chnk;
-		engine::Camera m_camera;
-		unsigned int m_vbo, m_vao;
-		unsigned int m_texture_atlas;
+		engine::PlayerCamera m_camera;
+		renderer::Texture* m_texture_atlas[sizeof(world::nodes)];
 		bool m_is_esc_pressed, m_was_camera_locked;
 		std::unique_ptr<std::thread> m_connection_thread;
 		std::atomic<bool> m_running;

src/game/world/chunk.cpp

@@ -5,7 +5,7 @@ namespace polygun::world {
 		for (int x = 0; x < CHUNK_SIZE; x++) {
 			for (int y = 0; y < CHUNK_SIZE; y++) {
 				for (int z = 0; z < CHUNK_SIZE; z++) {
-					chunk_data[x][y][z] = 1;
+					chunk_data[x][y][z] = 0;
 				}
 			}
 		}

src/game/world/chunk_renderer.cpp

@@ -1,10 +1,23 @@
-#include "chunk_renderer.hpp"
+#include "game/world/chunk_renderer.hpp"
+
 #include "common/logger.hpp"
+#include "game/renderer/shader.hpp"
+#include "game/renderer/mesh.hpp"
+#include "game/engine/engine.hpp"
 
 namespace polygun::world {
-    ChunkRenderer::ChunkRenderer() : chunk_shader("shaders/chunk_vertex.glsl", "shaders/chunk_fragment.glsl") {}
+    ChunkRenderer::ChunkRenderer(engine::Engine& engine) :
+		texture(0),
+		chunk_shader(engine.get_master_renderer().create_shader()),
+		mesh(engine.get_master_renderer().create_mesh())
+	{
+		chunk_shader->load_from_file("chunk");
+	}
 
-    ChunkRenderer::~ChunkRenderer() {}
+    ChunkRenderer::~ChunkRenderer() {
+		delete chunk_shader;
+		delete mesh;
+	}
 
     void ChunkRenderer::init() {/*
         float vertices[] = {
@@ -25,7 +38,9 @@ namespace polygun::world {
     }
 
     void ChunkRenderer::render(const glm::mat4& view, const glm::mat4& projection) {
-        glActiveTexture(GL_TEXTURE0);
+        /*
+		Note: Temporarily commented out ~mrkubax10
+		glActiveTexture(GL_TEXTURE0);
         glBindTexture(GL_TEXTURE_2D, texture);
 
         chunk_shader.bind();
@@ -33,6 +48,6 @@ namespace polygun::world {
         chunk_shader.set_uniform("projection", projection);
         chunk_shader.set_uniform("view", view);
 
-        vertex_array.draw_elements();
+        vertex_array.draw_elements();*/
     }
-}
+}

src/game/world/chunk_renderer.hpp

@@ -2,15 +2,22 @@
 #define POLYGUN_ENGINE_CHUNK_RENDERER_HPP
 
 #include <glm/glm.hpp>
-#include "chunk.hpp"
-#include "../renderer/shader.hpp"
-#include "../renderer/vertex_array.hpp"
+
+#include "game/world/chunk.hpp"
+
+namespace polygun::renderer {
+	class Shader;
+	class Mesh;
+}
+
+namespace polygun::engine {
+	class Engine;
+}
 
 namespace polygun::world {
-
     class ChunkRenderer {
     public:
-        ChunkRenderer();
+        ChunkRenderer(engine::Engine& engine);
         ~ChunkRenderer();
 
         void init();
@@ -18,10 +25,10 @@ namespace polygun::world {
 
     private:
         unsigned int texture;
-        renderer::Shader chunk_shader;
-        renderer::VertexArray vertex_array;
+        renderer::Shader* chunk_shader;
+        renderer::Mesh* mesh;
     };
 
 }
 
-#endif //POLYGUN_ENGINE_CHUNK_RENDERER_HPP
+#endif //POLYGUN_ENGINE_CHUNK_RENDERER_HPP

src/game/world/nodes.hpp

@@ -12,9 +12,12 @@ namespace polygun::world {
 	};
 
 	static NodeType nodes[] = {
-		{"air", "none"},
-		{"cobble stone", "res/textures/cobble.png"},
-		{"iron block", "res/textures/iron.png"},
+		//{"air", "none"},
+		{"dirt", "res/textures/dirt.png"},
+		{"grass", "res/textures/grass.png"},
+		{"bricks", "res/textures/bricks.png"},
+		{"gold", "res/textures/gold.png"},
+		{"iron", "res/textures/iron.png"},
 	};
 }