Next step

premake5.lua

@@ -33,7 +33,7 @@ project "bakara"
         "%{IncludeDirs.glfw}",
         "%{IncludeDirs.imgui}",
         "%{IncludeDirs.bakatools}",
-        "%{InlcudeDirs.stb}"
+        "%{IncludeDirs.stb}"
     }
 
     links 

src/bakara.h

@@ -14,8 +14,6 @@ Plaform namespace doc
 */
 namespace Bk::Plaform {}
 
-namespace Baka = Bk;
-
 #include <bakara/math/types.h>
 
 #include <bakara/io/io_codes.h>
@@ -26,10 +24,13 @@ namespace Baka = Bk;
 #include <bakara/core/layer.h>
 
 #include <bakara/renderer/cameras/ortho_camera.h>
+#include <bakara/renderer/cameras/ortho_camera_controller.h>
 
 #include <bakara/renderer/render_command.h>
 #include <bakara/renderer/renderer.h>
+#include <bakara/renderer/renderer2D.h>
 
+#include <bakara/renderer/texture.h>
 #include <bakara/renderer/buffer.h>
 #include <bakara/renderer/buffer_layout.h>
 #include <bakara/renderer/shader.h>

src/bakara/core/application.cpp

@@ -1,5 +1,7 @@
 #include "application.h"
 #include "bakara/core/window.h"
+#include "bakara/events/window_event.h"
+#include "bakara/renderer/renderer.h"
 #include "bakatools/logging/assert.h"
 #include "bakara/events/dispacher.h"
 
@@ -10,11 +12,14 @@ namespace Bk {
     { 
         BK_CORE_MSG_ASSERT(p_instance == nullptr, "Application already exists, can not create two application.")
         Application::p_instance = this;
+
         h_window = std::unique_ptr<Window>(Window::CreateWindow(WindowProps(title, width, height)));
+        h_window->SetEventCallback(BK_BIND_EVENT_FN(OnEvent));
+
+        Renderer::Init();
+
         imgui_layer = new ImguiLayer();
         PushOverlay(imgui_layer);
-        h_window->SetEventCallback(BK_BIND_EVENT_FN(OnEvent));
-        p_running = true;
     }
 
     Application::~Application() { }
@@ -22,9 +27,9 @@ namespace Bk {
     void Application::OnEvent(Event& e)
     {
         EventDispatcher dispatcher(e);
-        if (!(dispatcher.dispatch<WindowCloseEvent>(BK_BIND_DISPACHER_FN(WindowCloseEvent, OnWindowClose)) 
-        || dispatcher.dispatch<WindowResizeEvent>(BK_BIND_DISPACHER_FN(WindowResizeEvent, OnWindowResize))))
+        if (!dispatcher.dispatch<WindowCloseEvent>(BK_BIND_DISPACHER_FN(WindowCloseEvent, OnWindowClose)))
         {
+            dispatcher.dispatch<WindowResizeEvent>(BK_BIND_DISPACHER_FN(WindowResizeEvent, OnWindowResize));
             for(auto it = p_layer_stack.ReverseBegin(); it != p_layer_stack.ReverseEnd(); it++)
             {
                 (*it)->OnEvent(e);
@@ -34,18 +39,19 @@ namespace Bk {
 
     void Application::Close()
     {
-        h_window->Close();
         p_running = false;
     }
 
-    bool Application::OnWindowClose(WindowCloseEvent& e)
+    bool Application::OnWindowResize(WindowResizeEvent& e)
     {
-        Close();
-        return true;
+        isMinimized = !e.GetWidth() && !e.GetHeight();
+        Renderer::ResizeFrame(e.GetWidth(), e.GetHeight());
+        return false;
     }
 
-    bool Application::OnWindowResize(WindowResizeEvent& e)
+    bool Application::OnWindowClose(WindowCloseEvent& e)
     {
+        Close();
         return true;
     }
 
@@ -53,8 +59,10 @@ namespace Bk {
     {
         while (p_running)
         {
-            for (Layer* layer : p_layer_stack)
-                layer->OnUpdate(h_window->GetTime());
+            if (!isMinimized)
+                for (Layer* layer : p_layer_stack)
+                    layer->OnUpdate(h_window->GetTime());
+                
             imgui_layer->Begin();
             for (Layer* layer : p_layer_stack)
                 layer->ImguiRender();

src/bakara/core/application.h

@@ -83,7 +83,8 @@ namespace Bk {
 
         private:
             LayerStack p_layer_stack; //!< Layer stack of the application
-            bool p_running; //!< Flag that indicates if the update loop should stop or not 
+            bool p_running = true; //!< Flag that indicates if the update loop should stop or not 
+            bool isMinimized = false;
             static Application* p_instance;
     };
     /*! \fn std::unique_ptr<Application> Bk::CreateApp()

src/bakara/core/window.h

@@ -84,15 +84,6 @@ namespace Bk {
             Closes the window    
             */
             virtual void Close() = 0;
-            /*! \fn Bk::Window::Open
-            Opens and Initializes the window
-            */
-            virtual void Open() = 0;
-            /*! \fn Bk::Window::IsOpen
-            Indicates if the window is Opened
-            @return Open flag
-            */
-            virtual bool IsOpen() = 0;
 
             virtual void* GetNativeWindow() = 0;
 

src/bakara/events/mouse_event.h

@@ -12,8 +12,8 @@ namespace Bk
             MouseMoveEvent(const float x, const float y)
                 : p_mouse_x(x), p_mouse_y(y) {}
 
-            float get_x() const { return p_mouse_x; }
-            float get_y() const { return p_mouse_y; }
+            float GetX() const { return p_mouse_x; }
+            float GetY() const { return p_mouse_y; }
 
             Vec2 get_pos() const { return Vec2(p_mouse_x, p_mouse_y); }
 
@@ -33,8 +33,8 @@ namespace Bk
             MouseScrollEvent(const float x, const float y)
                 : p_dx(x), p_dy(y) {}
 
-            float get_dx() const { return p_dx; }
-            float get_dy() const { return p_dy; }
+            float GetDx() const { return p_dx; }
+            float GetDY() const { return p_dy; }
 
             EVENT_STRINGIFY("MouseScrollEvent : (%f, %f)", p_dx, p_dy)
 
@@ -48,7 +48,7 @@ namespace Bk
     class MouseButtonEvent : public Event
 	{
         public:
-            Code get_btn() { return m_btn; }
+            Code GetBtn() { return m_btn; }
 
             EVENT_CLASS_CATEGORY(MouseCategory | InputCategory)
         protected:

src/bakara/events/window_event.h

@@ -1,16 +1,17 @@
 #pragma once
 
+#include "bakatools/container/types.h"
 #include "event.h"
 
 namespace Bk {
     class WindowResizeEvent : public Event 
     {
         public:
-            WindowResizeEvent(uint width, uint height)
+            WindowResizeEvent(u32 width, u32 height)
             : p_width(width), p_height(height) {};
 
-            uint GetWidth() const { return p_width; }
-            uint GetHeight() const { return p_height; }
+            u32 GetWidth() const { return p_width; }
+            u32 GetHeight() const { return p_height; }
 
             EVENT_STRINGIFY("WindowResizeEvent : %d %d", p_width, p_height)
 
@@ -18,8 +19,8 @@ namespace Bk {
             EVENT_CLASS_CATEGORY(AppCategory)
 
         private: 
-            uint p_width;
-            uint p_height;
+            u32 p_width;
+            u32 p_height;
     };  
 
     class WindowCloseEvent : public Event 

src/bakara/math/types.h

@@ -15,6 +15,8 @@ namespace Bk
     namespace Math = glm;
 
     using Quaterion = glm::quat;
+
+    using Color = glm::vec4;
     
     /*! \typedef Bk::Vec2
     Wrapper around glm::vec2

src/bakara/renderer/cameras/ortho_camera.cpp

@@ -7,17 +7,23 @@
 
 namespace Bk 
 {
-    OrthographicCamera::OrthographicCamera(float left, float right, float bottom, float top)
-    : projectionMatrix(Math::ortho(left, right, bottom, top, -1.0f, 1.0f))
+    OrthoCamera::OrthoCamera(float left, float right, float bottom, float top)
+    : projection(Math::ortho(left, right, bottom, top, -1.0f, 1.0f))
     {
-        RecalculViewMatrix();
+        RecalculateView();
     }
 
-    void OrthographicCamera::RecalculViewMatrix()
+    void OrthoCamera::SetProjection(float left, float right, float bottom, float top)
+    {
+        projection = Math::ortho(left, right, bottom, top, -1.0f, 1.0f);
+        viewProjection = projection * view;
+    }
+
+    void OrthoCamera::RecalculateView()
     {
         Mat4 transform = Math::translate(Mat4(1.0f), position); 
         transform = Math::rotate(transform, Math::radians(rotation) , Vec3(0.0f, 0.0f, 1.0f));
-        viewMatrix = Math::inverse(transform);
-        viewProjectionMatrix = projectionMatrix * viewMatrix;
+        view = Math::inverse(transform);
+        viewProjection = projection * view;
     }
 }

src/bakara/renderer/cameras/ortho_camera.h

@@ -4,25 +4,26 @@
 
 namespace Bk 
 {
-    class OrthographicCamera
+    class OrthoCamera
     {
         public:
-            OrthographicCamera(float left, float right, float bottom, float top);
+            OrthoCamera(float left, float right, float bottom, float top);
 
-            void SetPosition(Vec3 position) { this->position = position; RecalculViewMatrix(); }
-            Vec3 GetPosition() { return position; }
-            void SetRotation(float rotation) { this->rotation = rotation; RecalculViewMatrix(); }
-            float GetRotaion() { return rotation; }
+            void SetPosition(Vec3 position) { this->position = position; RecalculateView(); }
+            const Vec3& GetPosition() const { return position; }
+            void SetRotation(float rotation) { this->rotation = rotation; RecalculateView(); }
+            float GetRotaion() const { return rotation; }
 
-            Mat4 GetViewMatrix() { return viewMatrix; }
-            Mat4 GetProjectionMatrix() { return projectionMatrix; }
-            Mat4 GetViewProjectionMatrix() { return viewProjectionMatrix; }
+            const Mat4 GetView() const { return view; }
+            void SetProjection(float left, float right, float bottom, float top);
+            const Mat4 GetProjection() const { return projection; }
+            const Mat4 GetViewProjection() const { return viewProjection; }
 
         private:
-            void RecalculViewMatrix();
-            Mat4 viewMatrix;
-            Mat4 projectionMatrix;
-            Mat4 viewProjectionMatrix;
+            void RecalculateView();
+            Mat4 view;
+            Mat4 projection;
+            Mat4 viewProjection;
 
             Vec3 position = { 0.0f, 0.0f, 0.0f };
             float rotation = 0.0f;

src/bakara/renderer/cameras/ortho_camera_controller.cpp

@@ -0,0 +1,76 @@
+#include "ortho_camera_controller.h"
+#include "bakara/events/dispacher.h"
+#include "bakara/events/event.h"
+#include "bakara/events/window_event.h"
+#include "bakara/io/keyboard.h"
+#include "glm/trigonometric.hpp"
+#include <cmath>
+
+namespace Bk
+{
+    OrthoCameraController::OrthoCameraController(float aspectRatio, bool rotation, bool zoom)
+    : aspectRatio(aspectRatio), 
+    camera(-aspectRatio * zoomLevel, aspectRatio * zoomLevel, -zoomLevel, zoomLevel), 
+    rotation(rotation), zoom(zoom) {}
+
+    void OrthoCameraController::OnEvent(Event& e)
+    {
+        EventDispatcher dispatcher(e);
+        dispatcher.dispatch<WindowResizeEvent>(BK_BIND_DISPACHER_FN(WindowResizeEvent, OnWindowResize));
+        dispatcher.dispatch<MouseScrollEvent>(BK_BIND_DISPACHER_FN(MouseScrollEvent, OnMouseScroll));
+    }
+
+    void OrthoCameraController::OnUpdate(DeltaTime dt)
+    {
+        if (rotation) 
+        {
+            if(Keyboard::KeyDown(KeyCode::Q))
+                cameraRotation -= rotationSpeed * dt;
+            if(Keyboard::KeyDown(KeyCode::E))
+                cameraRotation += rotationSpeed * dt;
+            camera.SetRotation(cameraRotation);
+        }
+
+        if(Keyboard::KeyDown(KeyCode::W))
+        {
+            cameraPosition.x += -std::sin(Math::radians(cameraRotation)) * moveSpeed * dt;
+            cameraPosition.y += std::cos(Math::radians(cameraRotation)) * moveSpeed * dt;
+        }
+        if(Keyboard::KeyDown(KeyCode::S))
+        {
+            cameraPosition.x -= -std::sin(Math::radians(cameraRotation)) * moveSpeed * dt;
+            cameraPosition.y -= std::cos(Math::radians(cameraRotation)) * moveSpeed * dt;
+        }
+        if(Keyboard::KeyDown(KeyCode::D))
+        {
+            cameraPosition.x += std::cos(Math::radians(cameraRotation)) * moveSpeed * dt;
+            cameraPosition.y += std::sin(Math::radians(cameraRotation)) * moveSpeed * dt;
+        }
+        if(Keyboard::KeyDown(KeyCode::A)) 
+        {
+            cameraPosition.x -= std::cos(Math::radians(cameraRotation)) * moveSpeed * dt;
+            cameraPosition.y -= std::sin(Math::radians(cameraRotation)) * moveSpeed * dt;
+        }
+        camera.SetPosition(cameraPosition);
+    }
+
+    bool OrthoCameraController::OnMouseScroll(MouseScrollEvent& e)
+    {
+        if (zoom) 
+        {
+            zoomLevel -= e.GetDY() * 0.01;
+            zoomLevel = std::max(zoomLevel, 0.5f);
+            zoomLevel = std::min(zoomLevel, 10.0f);
+            camera.SetProjection(-aspectRatio * zoomLevel, aspectRatio * zoomLevel, -zoomLevel, zoomLevel);
+            return true;
+        }
+        return false;
+    }
+
+    bool OrthoCameraController::OnWindowResize(WindowResizeEvent& e)
+    {
+        aspectRatio = (float)e.GetWidth() / (float)e.GetHeight();
+        camera.SetProjection(-aspectRatio * zoomLevel, aspectRatio * zoomLevel, -zoomLevel, zoomLevel);
+        return false;
+    }
+}

src/bakara/renderer/cameras/ortho_camera_controller.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include "bakara/core/deltatime.h"
+#include "bakara/events/event.h"
+#include "bakara/events/mouse_event.h"
+#include "bakara/events/window_event.h"
+#include "ortho_camera.h"
+
+namespace Bk 
+{
+    class OrthoCameraController
+    {
+        public:
+            OrthoCameraController(float aspectRatio, bool rotation = false, bool zoom = false);
+
+            void OnUpdate(DeltaTime dt);
+            void OnEvent(Event& e);
+
+            const OrthoCamera& GetCamera() { return camera; }
+
+            void SetMoveSpeed(float moveSpeed) { this->moveSpeed = moveSpeed; }
+            void SetRotationSpeed(float rotationSpeed) { this->rotationSpeed = rotationSpeed; }
+
+        private:
+            float aspectRatio;
+            float zoomLevel = 1.0f;
+
+            bool rotation, zoom;
+            float cameraRotation = 0.0f;
+            Vec3 cameraPosition = { 0, 0, 0 };
+            float moveSpeed = 1.0f;
+            float rotationSpeed = 1.0f;
+
+            OrthoCamera camera;
+
+            bool OnMouseScroll(MouseScrollEvent& e);
+            bool OnWindowResize(WindowResizeEvent& e);
+    };
+}

src/bakara/renderer/graphics_context.cpp

@@ -0,0 +1,18 @@
+#include "graphics_context.h"
+#include "bakara/renderer/renderer.h"
+#include "bakatools/logging/assert.h"
+#include "platforms/opengl/opengl_context.h"
+
+namespace Bk 
+{
+    Scope<GraphicsContext> GraphicsContext::Create(void *window_handle)
+    {
+        switch (Renderer::GetAPI()) 
+        {
+            case Renderer::API::None: BK_MSG_ASSERT(false, "API not supported"); return nullptr;
+            case Renderer::API::Opengl: return CreateScope<Platform::OpenglContext>(window_handle);
+        }
+        BK_MSG_ASSERT(false, "API not supported"); 
+        return nullptr;
+    }
+}

src/bakara/renderer/graphics_context.h

@@ -1,5 +1,6 @@
 #pragma once 
 
+#include "bakatools/container/types.h"
 namespace Bk 
 {
     class GraphicsContext
@@ -8,6 +9,7 @@ namespace Bk
             virtual ~GraphicsContext() {}
             virtual void Init() = 0;
             virtual void SwapBuffers() = 0;
-            virtual void SetViewport(int width, int height) = 0;
+
+            static Scope<GraphicsContext> Create(void* window_handle);
     };
 }

src/bakara/renderer/render_command.h

@@ -9,8 +9,10 @@ namespace Bk
     class RenderCommand
     {
         public:
+            static inline void Init() { rendererAPI->Init(); }
             static inline void Clear(Vec4 color) { rendererAPI->Clear(color.r, color.g, color.b, color.a); }
             static inline void Clear(float red, float green, float blue, float alpha) { rendererAPI->Clear(red, green, blue, alpha); }
+            static inline void SetViewport(u32 width, u32 height) { rendererAPI->SetViewport(width, height); }
             static inline void DrawIndexed(Ref<VertexArray> va) { rendererAPI->DrawIndexed(va); }
         private:
             static RendererAPI* rendererAPI;

src/bakara/renderer/renderer.cpp

@@ -1,14 +1,26 @@
 #include "renderer.h"
 #include "bakara/renderer/cameras/ortho_camera.h"
 #include "bakara/renderer/render_command.h"
+#include "bakara/renderer/renderer2D.h"
 namespace Bk 
 {
     Renderer::API Renderer::s_RenderAPI = Renderer::API::Opengl;
-    Renderer::SceneData* Renderer::sceneData = new Renderer::SceneData();
+    Renderer::Storage* Renderer::data = new Renderer::Storage();
 
-    void Renderer::BeginScene(OrthographicCamera camera)
+    void Renderer::Init()
     {
-        sceneData->VPMatrix = camera.GetViewProjectionMatrix();
+        RenderCommand::Init();
+        Renderer2D::Init();
+    }
+
+    void Renderer::ResizeFrame(u32 width, u32 height)
+    {
+        RenderCommand::SetViewport(width, height);
+    }
+
+    void Renderer::BeginScene(const OrthoCamera& camera)
+    {
+        data->viewProjection = camera.GetViewProjection();
     }
 
     void Renderer::EndScene()
@@ -20,7 +32,7 @@ namespace Bk
     {
         va->Bind();
         shader->Bind();
-        shader->Set("u_ViewProjection", sceneData->VPMatrix);
+        shader->Set("u_ViewProjection", data->viewProjection);
         shader->Set("u_Transform", transform);
         RenderCommand::DrawIndexed(va);
     } 

src/bakara/renderer/renderer.h

@@ -19,16 +19,20 @@ namespace Bk
         
             static API GetAPI() { return s_RenderAPI; }
 
-            static void BeginScene(OrthographicCamera camera);
+            static void Init();
+
+            static void ResizeFrame(u32 width, u32 height);
+
+            static void BeginScene(const OrthoCamera& camera);
             static void EndScene();
 
             static void Submit(Ref<VertexArray> va, Ref<Shader> shader, Mat4 transform = Mat4(1.0f));    
         private:
-            struct SceneData 
+            struct Storage 
             {
-                Mat4 VPMatrix;
+                Mat4 viewProjection;
             };
-            static SceneData* sceneData;
+            static Storage* data;
             static API s_RenderAPI;
     };
 }

src/bakara/renderer/renderer2D.cpp

@@ -0,0 +1,81 @@
+#include "renderer2D.h"
+#include "bakara/renderer/buffer.h"
+#include "bakara/renderer/buffer_layout.h"
+#include "bakara/renderer/render_command.h"
+#include "bakara/renderer/texture.h"
+
+namespace Bk 
+{
+    Renderer2D::Storage* Renderer2D::data = new Renderer2D::Storage();
+
+    void Renderer2D::Init()
+    {
+        data->shaderLib.Load("assets/shaders/flatColor.glsl");
+        data->shaderLib.Load("assets/shaders/texture.glsl");
+        data->squareVA = VertexArray::Create();
+
+        float squareVertices[5 * 4]  = {
+            -0.5f, -0.5f, 0.0f, 0.0f, 0.0f,
+            0.5f, -0.5f, 0.0f, 1.0f, 0.0f,
+            0.5f, 0.5f, 0.0f, 1.0f, 1.0f,
+            -0.5f, 0.5f, 0.0f, 0.0f, 1.0f
+        };
+        Ref<VertexBuffer> squareVB = VertexBuffer::Create(squareVertices, sizeof(squareVertices));
+        squareVB->SetLayout({
+            { ShaderType::Float3, "a_Position" },
+            { ShaderType::Float2, "a_TextCord" }
+        });
+        data->squareVA->AddVertexBuffer(squareVB);
+
+        u32 squareIndices[6] = { 0, 1, 2, 0, 2, 3 };
+        data->squareVA->SetIndexbuffer(IndexBuffer::Create(squareIndices, sizeof(squareIndices) / sizeof(u32))); 
+    }
+
+    void Renderer2D::Shutdown()
+    {
+        delete data;
+    }
+
+    void Renderer2D::BeginScene(const OrthoCamera &camera)
+    {
+        data->viewProjection = camera.GetViewProjection();   
+    }
+
+    void Renderer2D::EndScene()
+    {
+
+    }
+
+    void Renderer2D::DrawQuad(const Vec2& position, const Vec2& size, const Color& color)
+    {
+        Renderer2D::DrawQuad(Vec3(position, 0), size, color);
+    }
+
+    void Renderer2D::DrawQuad(const Vec3& position, const Vec2& size, const Color& color)
+    {
+        Ref<Shader> shader = data->shaderLib["flatColor"];
+        data->squareVA->Bind();
+        shader->Bind();
+        shader->Set("u_FlatColor", color);
+        shader->Set("u_ViewProjection", data->viewProjection);
+        shader->Set("u_Transform", Math::scale(Math::translate(Mat4(1.0f), position), Vec3(size, 0)));
+        RenderCommand::DrawIndexed(data->squareVA);
+    }
+
+    void Renderer2D::DrawQuad(const Vec2& position, const Vec2& size, const Ref<Texture2D>& texture)
+    {
+        Renderer2D::DrawQuad(Vec3(position, 0), size, texture);
+    }
+
+    void Renderer2D::DrawQuad(const Vec3& position, const Vec2& size, const Ref<Texture2D>& texture)
+    {
+        Ref<Shader> shader = data->shaderLib["texture"];
+        data->squareVA->Bind();
+        texture->Bind();
+        shader->Bind();
+        shader->Set("u_Texture", 0);
+        shader->Set("u_ViewProjection", data->viewProjection);
+        shader->Set("u_Transform", Math::scale(Math::translate(Mat4(1.0f), position), Vec3(size, 0)));
+        RenderCommand::DrawIndexed(data->squareVA);
+    }
+}

src/bakara/renderer/renderer2D.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "bakara/renderer/shader.h"
+#include "bakara/renderer/texture.h"
+#include "bakara/renderer/vertex_array.h"
+#include "cameras/ortho_camera.h"
+
+namespace Bk 
+{
+    class Renderer2D 
+    {
+        public:
+            static void Init();
+            static void Shutdown();
+
+            static void BeginScene(const OrthoCamera& camera);
+            static void EndScene();
+
+            static void DrawQuad(const Vec2& position, const Vec2& size, const Color& color);
+            static void DrawQuad(const Vec3& position, const Vec2& size, const Color& color);
+            static void DrawQuad(const Vec2& position, const Vec2& size, const Ref<Texture2D>& texture);
+            static void DrawQuad(const Vec3& position, const Vec2& size, const Ref<Texture2D>& texture);
+        private:
+            struct Storage
+            {
+                Mat4 viewProjection;
+                Ref<VertexArray> squareVA;
+                ShaderLibrary shaderLib;
+            };   
+
+            static Storage* data;         
+    };
+}

src/bakara/renderer/renderer_api.h

@@ -8,7 +8,10 @@ namespace Bk
     {
         public:
             virtual ~RendererAPI() {}
+
+            virtual void Init() = 0;
             virtual void Clear(float red, float green, float blue, float alpha) = 0;
+            virtual void SetViewport(u32 width, u32 height) = 0;
             virtual void DrawIndexed(Ref<VertexArray> va) = 0;
     };
 }

src/bakara/renderer/shader.cpp

@@ -5,14 +5,56 @@
 
 namespace Bk
 {
-    Ref<Shader> Shader::Create(std::string vertexSrc, std::string fragSrc)
+    Ref<Shader> Shader::Create(const std::string& name, const std::string& vertexSrc, const std::string& fragSrc)
     {
         switch(Renderer::GetAPI())
         {
             case Renderer::API::None: BK_MSG_ASSERT(false, "API not supported"); return nullptr;
-            case Renderer::API::Opengl: return CreateRef<Platform::OpenglShader>(vertexSrc, fragSrc);
+            case Renderer::API::Opengl: return CreateRef<Platform::OpenglShader>(name, vertexSrc, fragSrc);
         }
         BK_MSG_ASSERT(false, "API not supported"); 
         return nullptr;
     }
+    Ref<Shader> Shader::Create(const std::string& filePath)
+    {
+        switch(Renderer::GetAPI())
+        {
+            case Renderer::API::None: BK_MSG_ASSERT(false, "API not supported"); return nullptr;
+            case Renderer::API::Opengl: return CreateRef<Platform::OpenglShader>(filePath);
+        }
+        BK_MSG_ASSERT(false, "API not supported"); 
+        return nullptr;
+    }
+
+    void ShaderLibrary::Add(const std::string& name, const Ref<Shader>& shader)
+    {
+        BK_CORE_MSG_ASSERT(!Exists(name), "Shader already exists in library")
+        shaders[name] = shader;
+    }
+
+    void ShaderLibrary::Add(const Ref<Shader>& shader)
+    {
+        const auto& name = shader->GetName();
+        Add(shader->GetName(), shader);
+    }
+
+    Ref<Shader> ShaderLibrary::Load(const std::string& filePath)
+    {
+        Ref<Shader> shader = Shader::Create(filePath);
+        Add(shader);
+        return shader;
+    }
+
+    Ref<Shader> ShaderLibrary::Load(const std::string& name, const  std::string filePath)
+    {
+        Ref<Shader> shader = Shader::Create(filePath);
+        Add(name, shader);
+        return shader;
+    }
+
+    Ref<Shader> ShaderLibrary::Get(const std::string& name)
+    {
+        BK_CORE_MSG_ASSERT(Exists(name), "Shader not found")
+        return shaders[name];
+    }
 }

src/bakara/renderer/shader.h

@@ -3,6 +3,7 @@
 #include "bakara/math/types.h"
 #include "bakatools/container/types.h"
 #include <string>
+#include <unordered_map>
 
 namespace Bk
 {
@@ -11,6 +12,8 @@ namespace Bk
         public:
             virtual ~Shader() {}
 
+            virtual const std::string& GetName() = 0;
+
             virtual void Bind() = 0;
             virtual void Unbind() = 0;
 
@@ -24,6 +27,23 @@ namespace Bk
             virtual void Set(const std::string name, Mat3 val) = 0;
             virtual void Set(const std::string name, Mat4 val) = 0;
 
-            static Ref<Shader> Create(std::string vertexSrc, std::string fragSrc);
+            static Ref<Shader> Create(const std::string& name, const std::string& vertexSrc, const std::string& fragSrc);
+            static Ref<Shader> Create(const std::string& filePath);
+    };
+
+    class ShaderLibrary
+    {
+        public:
+            inline bool Exists(const std::string& name) { return shaders.find(name) != shaders.end(); }
+
+            void Add(const std::string& name, const Ref<Shader>& shader);
+            void Add(const Ref<Shader>& shader);
+            Ref<Shader> Load(const std::string& filePath);
+            Ref<Shader> Load(const std::string& name, const  std::string filePath);
+
+            Ref<Shader> Get(const std::string& name);
+            inline Ref<Shader> operator[](const std::string& name) { return Get(name); }
+        private:
+            std::unordered_map<std::string, Ref<Shader>> shaders;
     };
 }

src/bakara/renderer/texture.h

@@ -11,7 +11,7 @@ namespace Bk
             virtual ~Texture() {}
             virtual u32 GetWidth() = 0;
             virtual u32 GetHeight() = 0;
-            virtual void Bind() = 0;
+            virtual void Bind(u32 slot = 0) = 0;
     };
 
     class Texture2D : public Texture

src/platforms/glfw/glfw_window.cpp

@@ -3,6 +3,7 @@
 #include "bakara/events/key_event.h"
 #include "bakara/events/mouse_event.h"
 #include "bakara/events/window_event.h"
+#include "bakara/renderer/graphics_context.h"
 #include "bakatools/logging/assert.h"
 
 #include <GLFW/glfw3.h>
@@ -14,11 +15,6 @@ namespace Bk {
     }
 
     namespace Platform {
-        GlfwWindowData::~GlfwWindowData()
-        {
-            delete context;
-        }
-
         static uint p_glfw_Initialized = 0;
 
         static void glfw_error_callback(int error, const char* description) 
@@ -41,7 +37,6 @@ namespace Bk {
 
         void GlfwWindow::Init()
         {
-            h_IsOpen = true;
             BK_CORE_INFO("Creating window '{0}' ({1}, {2})", p_data.title, p_data.width, p_data.height); 
             if (!p_glfw_Initialized++) 
             {
@@ -50,12 +45,10 @@ namespace Bk {
                 glfwSetErrorCallback(glfw_error_callback);
             }
             p_window = glfwCreateWindow((int)p_data.width, (int)p_data.height, p_data.title.c_str(), nullptr, nullptr);
-            p_data.context = new OpenglContext(p_window);
-            p_data.context->Init();
-            p_data.context->SetViewport(p_data.width, p_data.height);
+            context = GraphicsContext::Create((void*)p_window);
+            context->Init();
             glfwSetWindowUserPointer(p_window, &p_data);
             SetVsync(true);
-
             InitEventCallbacks();
         }
 
@@ -64,7 +57,6 @@ namespace Bk {
             glfwSetFramebufferSizeCallback(p_window, [](GLFWwindow* window, int width, int height)
                 {
                     GlfwWindowData& data = *(GlfwWindowData*)glfwGetWindowUserPointer(window);
-                    data.context->SetViewport(width, height);
                     WindowResizeEvent e(data.width = (uint)width, data.height = (uint)height);
                     data.callback(e);
                 });
@@ -139,11 +131,7 @@ namespace Bk {
             dt = DeltaTime(time - lastFrameTime);
             lastFrameTime = time;
             glfwPollEvents();
-            p_data.context->SwapBuffers();
-            if (h_IsOpen)
-            {
-                if (p_Shutdown && h_IsOpen) { Shutdown(); }
-            }
+            context->SwapBuffers();
         }
 
         void GlfwWindow::SetEventCallback(const EventCallback callback)  
@@ -153,38 +141,19 @@ namespace Bk {
 
         void GlfwWindow::SetVsync(bool enable)  
         {
-            if (h_IsOpen) 
-            {
-                if (enable) { glfwSwapInterval(1); }
-                else { glfwSwapInterval(0); }
-                p_data.vsync = enable;
-            }
+            if (enable) { glfwSwapInterval(1); }
+            else { glfwSwapInterval(0); }
+            p_data.vsync = enable;
         }
 
         bool GlfwWindow::IsVsync() const  
         {
             return p_data.vsync;
         }
-        
-        void GlfwWindow::Shutdown() 
-        {
-            h_IsOpen = false;
-            p_Shutdown = false;
-            glfwDestroyWindow(p_window);
-        }
 
         void GlfwWindow::Close()
         {
-            p_Shutdown = true;
-        }
-
-        void GlfwWindow::Open()
-        {
-            if (!h_IsOpen) 
-            { 
-                Init(); 
-            }
+            glfwDestroyWindow(p_window);
         }
-
     }
 }

src/platforms/glfw/glfw_window.h

@@ -2,7 +2,7 @@
 
 #include "bakara/core/deltatime.h"
 #include "bakara/core/window.h"
-#include "platforms/opengl/opengl_context.h"
+#include "bakara/renderer/graphics_context.h"
 
 struct GLFWwindow;
 
@@ -14,8 +14,6 @@ namespace Bk::Platform {
         uint height;
         bool vsync;
         EventCallback callback;
-        GraphicsContext* context;
-        ~GlfwWindowData();
     };
 
     class GlfwWindow : public Window
@@ -34,28 +32,20 @@ namespace Bk::Platform {
             bool IsVsync() const override;
 
             void Close() override;
-            void Open() override;
 
             void* GetNativeWindow() override { return p_window; }
-            /*! \fn Bk::Window::IsOpen
-            Indicates if the window is Opened
-            @return Open flag
-            */
-            bool IsOpen() override { return h_IsOpen; }
 
             virtual DeltaTime GetTime() override { return dt; } 
         private:
-            bool h_IsOpen; //!< indicaste if the window is Opened or not
-            bool p_Shutdown;
-
             GLFWwindow* p_window;
             GlfwWindowData p_data;
 
+            Scope<GraphicsContext> context;
+
             float lastFrameTime = 0.0f;
             DeltaTime dt = { 0.0f };
             
             void InitEventCallbacks();
             void Init();
-            void Shutdown();
     };
 }

src/platforms/opengl/opengl_context.cpp

@@ -6,8 +6,8 @@
 
 namespace Bk::Platform 
 {
-    OpenglContext::OpenglContext(GLFWwindow* window_handle)
-    : window_handle(window_handle) {}
+    OpenglContext::OpenglContext(void* window_handle)
+    : window_handle((GLFWwindow*)window_handle) {}
 
     void OpenglContext::Init() 
     {
@@ -30,9 +30,4 @@ namespace Bk::Platform
     {
         glfwSwapBuffers(window_handle);
     }
-
-    void OpenglContext::SetViewport(int width, int height)
-    {
-        glViewport(0, 0, width, height);
-    }
 }

src/platforms/opengl/opengl_context.h

@@ -10,11 +10,10 @@ namespace Bk::Platform
     class OpenglContext : public GraphicsContext
     {
         public:
-            OpenglContext(GLFWwindow* window_handle);
+            OpenglContext(void* window_handle);
             virtual ~OpenglContext() override { }
             void Init() override;
             void SwapBuffers() override;
-            void SetViewport(int width, int height) override;
         private:
             GLFWwindow* window_handle;
     };

src/platforms/opengl/opengl_renderer_api.cpp

@@ -3,12 +3,24 @@
 
 namespace Bk 
 {
+    void OpenglRendererAPI::Init()
+    {
+        glEnable(GL_BLEND);
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        glEnable(GL_DEPTH_TEST);
+    }
+
     void OpenglRendererAPI::Clear(float red, float green, float blue, float alpha)
     {
         glClearColor(red, green, blue, alpha);
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     }
 
+    void OpenglRendererAPI::SetViewport(u32 width, u32 height)
+    {
+        glViewport(0, 0, width, height);
+    }
+
     void OpenglRendererAPI::DrawIndexed(Ref<VertexArray> va)
     {
         glDrawElements(GL_TRIANGLES, va->GetIndexbuffer()->GetCount(), GL_UNSIGNED_INT, nullptr);

src/platforms/opengl/opengl_renderer_api.h

@@ -2,13 +2,16 @@
 
 #include "bakara/renderer/renderer_api.h"
 #include "bakara/renderer/vertex_array.h"
+#include "bakatools/container/types.h"
 
 namespace Bk 
 {
     class OpenglRendererAPI : public RendererAPI
     {
         public:
+            virtual void Init() override;
             virtual void Clear(float red, float green, float blue, float alpha) override;
+            virtual void SetViewport(u32 width, u32 height) override;
             virtual void DrawIndexed(Ref<VertexArray> va) override;
     };
 }

src/platforms/opengl/opengl_shader.cpp

@@ -1,48 +1,98 @@
 #include "opengl_shader.h"
-#include "bakatools/logging/log.h"
+#include "bakatools/file_system/file.h"
+#include "bakatools/logging/assert.h"
 #include "bakara/math/types.h"
-#include <glad/glad.h>
+#include "bakatools/logging/log.h"
+#include <unordered_map>
 
 namespace Bk::Platform 
-{
-    OpenglShader::OpenglShader(std::string vertexSrc, std::string fragSrc)
+{   
+    static GLenum ShaderTypeFromString(std::string type)
     {
-        int success;
-        char infoLog[512];
-        //Creating a shader program
-        id = glCreateProgram();
-        //Compile shader
-        GLuint ret = glCreateShader(GL_VERTEX_SHADER);
-        const GLchar* shader = vertexSrc.c_str();
-        glShaderSource(ret, 1, &shader, NULL);
-        glCompileShader(ret);
-        glGetShaderiv(ret, GL_COMPILE_STATUS, &success);
-        if(!success) {
-            glGetShaderInfoLog(ret, 512, NULL, infoLog);
-            BK_INFO("Error with fragment shader compilating : {0}", infoLog); 
+        if (type == "vertex") return GL_VERTEX_SHADER;
+        else if (type == "fragment" || type == "pixel") return GL_FRAGMENT_SHADER;
+        BK_CORE_MSG_ASSERT(false, "An known shader type")  
+        return 0;
+    }
+
+    OpenglShader::OpenglShader(const std::string& filePath)
+    {
+        File file = File(filePath);
+        BK_CORE_MSG_ASSERT(file.exists(), "Shader file not found")
+        std::string filename = file.name();
+        size_t pos = filename.find_last_of(".");
+        name = pos == std::string::npos ? filename : filename.substr(0, pos); 
+        std::string source = file.read();
+        auto sources = PreProcess(source);
+        Compile(sources);
+
+    }
+
+    OpenglShader::OpenglShader(const std::string& name, const std::string& vertexSrc, const std::string& fragSrc)
+    : name(name)
+    {
+        Compile({
+            { GL_VERTEX_SHADER, vertexSrc },
+            { GL_FRAGMENT_SHADER, fragSrc }
+        });
+    }
+
+    std::unordered_map<GLenum, std::string> OpenglShader::PreProcess(std::string source)
+    {
+        std::unordered_map<GLenum, std::string> sources;
+        const std::string token("#type");
+        size_t pos = source.find(token, 0);
+        BK_CORE_MSG_ASSERT(pos != std::string::npos, "Not shader found in file")
+        while (pos != std::string::npos)
+        {
+            size_t eol = source.find_first_of("\n", pos);
+            BK_CORE_MSG_ASSERT(eol != std::string::npos, "Syntax Error in shader file");
+            size_t begin = pos + token.length() + 1;
+            std::string type = source.substr(begin, eol - begin);
+            GLenum glType = ShaderTypeFromString(type);
+            size_t nextLine = source.find_first_not_of("\n", eol);
+            pos = source.find(token, nextLine);
+            sources[glType] = (pos == std::string::npos) ? source.substr(nextLine) : source.substr(nextLine, pos - nextLine);
         }
-        glAttachShader(id, ret);
-        
-        GLuint ret1 = glCreateShader(GL_FRAGMENT_SHADER);
-        shader = fragSrc.c_str();
-        glShaderSource(ret1, 1, &shader, NULL);
-        glCompileShader(ret1);
-        glGetShaderiv(ret1, GL_COMPILE_STATUS, &success);
-        if(!success) {
-            glGetShaderInfoLog(ret1, 512, NULL, infoLog);
-            BK_INFO("Error with fragment shader compilating : {0}", infoLog); 
+        return sources;
+    }
+
+    void OpenglShader::Compile(std::unordered_map<GLenum, std::string> sources)
+    {
+        std::vector<GLuint> shaders;
+        id = glCreateProgram();
+        for(auto& kv : sources)
+        {
+            GLenum type = kv.first;
+            const GLchar* shaderSrc = kv.second.c_str();
+            GLuint shader = glCreateShader(type);
+            glShaderSource(shader, 1, &shaderSrc, NULL);
+            glCompileShader(shader);
+            int info;
+            glGetShaderiv(shader, GL_COMPILE_STATUS, &info);
+            if(!info) {
+                std::vector<char> infoLog;
+                glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &info);
+                infoLog.resize(info);
+                glGetShaderInfoLog(shader, infoLog.size(), NULL, infoLog.data());
+                BK_CORE_ERROR("Shader Error : {0}", std::string(infoLog.data(),infoLog.size()));
+                BK_MSG_ASSERT(false, "Error with shader compilation")
+            }
+            glAttachShader(id, shader);
+            shaders.push_back(shader);
         }
-        glAttachShader(id, ret1);
         glLinkProgram(id);
-
-        glGetProgramiv(id, GL_LINK_STATUS, &success);
-        if(!success) {
-            glGetProgramInfoLog(id, 512, NULL, infoLog);
-            BK_INFO("Error when link sharder in a program : {0}", infoLog); 
+        int info;
+        glGetProgramiv(id, GL_LINK_STATUS, &info);
+        if(!info) {
+            std::vector<char> infoLog;
+            glGetShaderiv(id, GL_INFO_LOG_LENGTH, &info);
+            infoLog.resize(info);
+            glGetProgramInfoLog(id, infoLog.size(), NULL, infoLog.data());
+            BK_CORE_ERROR("Shader Error : {0}", std::string(infoLog.data(),infoLog.size()));
+            BK_MSG_ASSERT(false, "Error when link sharder in a program")
         }
-
-        glDeleteShader(ret);
-        glDeleteShader(ret1);
+        for(auto shader : shaders) glDeleteShader(shader);
     }
 
     OpenglShader::~OpenglShader()
@@ -92,7 +142,7 @@ namespace Bk::Platform
 
     void OpenglShader::Set(const std::string name, Vec4 v) 
     {
-        glUniformMatrix3fv(glGetUniformLocation(this->id, name.c_str()), 1, GL_FALSE, Math::value_ptr(v));
+        this->Set(name, v.x, v.y, v.z, v.w);
     }
 
     void OpenglShader::Set(const std::string name, Mat3 val) 

src/platforms/opengl/opengl_shader.h

@@ -1,15 +1,21 @@
 #pragma once 
 
 #include "bakara/renderer/shader.h"
+#include <glad/glad.h>
+#include <string>
+#include <unordered_map>
 
 namespace Bk::Platform 
 {
     class OpenglShader : public Shader
     {
         public:
-            OpenglShader(std::string vertexSrc, std::string fragSrc);
+            OpenglShader(const std::string& filePath);
+            OpenglShader(const std::string& name, const std::string& vertexSrc, const std::string& fragSrc);
             virtual ~OpenglShader();
 
+            virtual const std::string& GetName() override { return name; } 
+
             virtual void Bind() override;
             virtual void Unbind() override;
 
@@ -25,5 +31,8 @@ namespace Bk::Platform
         
         private:
             unsigned int id;
+            std::string name;
+            std::unordered_map<GLenum, std::string> PreProcess(std::string source);
+            void Compile(std::unordered_map<GLenum, std::string> sources);
     };
 }

src/platforms/opengl/opengl_texture.cpp

@@ -1,4 +1,6 @@
 #include "opengl_texture.h"
+#include "bakatools/logging/assert.h"
+#include "bakatools/logging/log.h"
 
 #include <stb_image.h>
 #include <glad/glad.h>
@@ -7,16 +9,40 @@ namespace Bk::Platform
 {
     OpenglTexture2D::OpenglTexture2D(const std::string& filePath)
     {
+        stbi_set_flip_vertically_on_load(true);
+        int width, height, channels;
+        stbi_uc* data = stbi_load(filePath.c_str(), &width, &height, &channels, 0);
+        
+        BK_CORE_MSG_ASSERT(data, "Coudn't load image data")
+        BK_CORE_MSG_ASSERT(channels >= 3 && channels <= 4, "Image format not supported")
 
+        this->width = (u32)width;
+        this->height = (u32)height;
+
+        GLenum internalFormat = 0, format = 0;
+        if(channels == 4) { internalFormat = GL_RGBA8; format = GL_RGBA; }
+        else { internalFormat = GL_RGB8; format = GL_RGB; }
+
+        glGenTextures(1, &id);
+        glBindTexture(GL_TEXTURE_2D, id);
+        glTexStorage2D(GL_TEXTURE_2D, 1, internalFormat, this->width, this->height);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+        glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, this->width, this->height, format, GL_UNSIGNED_BYTE, data);
+        
+        stbi_image_free(data);
     }
 
     OpenglTexture2D::~OpenglTexture2D()
     {
-
+        glDeleteTextures(1, &id);
     }
 
-    void OpenglTexture2D::Bind() 
+    void OpenglTexture2D::Bind(u32 slot) 
     {
-
+        glActiveTexture(GL_TEXTURE0 + slot);
+        glBindTexture(GL_TEXTURE_2D, id);
     }
 }

src/platforms/opengl/opengl_texture.h

@@ -12,7 +12,7 @@ namespace Bk::Platform
 
             virtual u32 GetWidth() override { return width; }
             virtual u32 GetHeight() override { return height; }
-            virtual void Bind() override;
+            virtual void Bind(u32 slot = 0) override;
         private:
             u32 id;
             u32 width, height;