First render.

src/dawn/CMakeLists.txt

@@ -21,7 +21,7 @@ add_subdirectory(assert)
 # add_subdirectory(asset)
 # add_subdirectory(audio)
 add_subdirectory(component)
-# add_subdirectory(display)
+add_subdirectory(display)
 add_subdirectory(game)
 # add_subdirectory(games)
 # add_subdirectory(input)
@@ -32,7 +32,7 @@ add_subdirectory(game)
 add_subdirectory(scene)
 # add_subdirectory(state)
 # add_subdirectory(time)
-# add_subdirectory(util)
+add_subdirectory(util)
 
 # Definitions
 # target_compile_definitions(${DAWN_TARGET_NAME}

src/dawn/component/display/CMakeLists.txt

@@ -6,6 +6,8 @@
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     Camera.cpp
-    Material.cpp
     MeshRenderer.cpp
 )
+
+# Subdirs
+add_subdirectory(material)

src/dawn/component/display/Camera.cpp

@@ -51,7 +51,9 @@ glm::mat4 Camera::getProjection() {
 }
 
 float_t Camera::getAspect() {
-  return 1.0f;
+  auto rt = this->getRenderTarget();
+  if(rt == nullptr) rt = getGame()->renderHost.getBackBufferRenderTarget();
+  return rt->getWidth() / rt->getHeight();
 }
 
 void Camera::setRenderTarget(std::shared_ptr<RenderTarget> renderTarget) {

src/dawn/component/display/IRenderableComponent.hpp

@@ -0,0 +1,159 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "game/Game.hpp"
+#include "scene/Scene.hpp"
+#include "display/mesh/Mesh.hpp"
+#include "display/shader/Shader.hpp"
+#include "component/display/Camera.hpp"
+#include "component/display/MeshRenderer.hpp"
+
+namespace Dawn {
+  struct IRenderPass {
+    public:
+      std::shared_ptr<Mesh> mesh;
+
+      /**
+       * Binds the shader for this render pass.
+       */
+      virtual void bind() = 0;
+
+      /**
+       * Sets the data for this render pass to the shader.
+       */
+      virtual void setData() = 0;
+
+      /**
+       * Uploads the data to the GPU.
+       */
+      virtual void upload() = 0;
+
+      /**
+       * Draws the mesh for this render pass.
+       */
+      virtual void draw() = 0;
+
+      /**
+       * Cleans up the render pass.
+       */
+      virtual ~IRenderPass() { }
+  };
+
+  template<class S, typename D>
+  struct RenderPass : public IRenderPass {
+    private:
+      std::shared_ptr<S> shader;
+      const D data;
+      std::shared_ptr<Mesh> mesh;
+      const enum MeshDrawMode drawMode;
+      const int32_t indiceStart;
+      const int32_t indiceCount;
+
+    public:
+      /**
+       * Constructs a new RenderPass.
+       * 
+       * @param self Self component instance that is creating this render pass.
+       * @param d The data to use for this render pass.
+       * @param mesh The mesh to use for this render pass.
+       * @param drawMode The draw mode to use for this render pass.
+       * @param indiceStart The indice to start drawing from.
+       * @param indiceCount The number of indices to draw.
+       */
+      RenderPass(
+        SceneComponent &self,
+        const D d,
+        const std::shared_ptr<Mesh> mesh,
+        const enum MeshDrawMode drawMode,
+        const int32_t indiceStart,
+        const int32_t indiceCount
+      ) :
+        data(d),
+        mesh(mesh),
+        drawMode(drawMode),
+        indiceStart(indiceStart),
+        indiceCount(indiceCount)
+      {
+        //Get the shader
+        shader = (
+          self.getGame()->renderHost.shaderManager.getShader<S>()
+        );
+        assertNotNull(shader, "Shader cannot be null!");
+
+        // Need mesh?
+        if(!this->mesh) {
+          auto meshRenderer = self.getItem()->getComponent<MeshRenderer>();
+          if(meshRenderer) this->mesh = meshRenderer->mesh;
+        }
+      }
+
+      void bind() override {
+        shader->bind();
+      }
+
+      void setData() override {
+        shader->setData(data);
+      }
+
+      void upload() override {
+        shader->upload();
+      }
+
+      void draw() override {
+        if(mesh) {
+          mesh->draw(drawMode, indiceStart, indiceCount);
+        }
+      }
+  };
+
+  struct RenderPassContext {
+    std::shared_ptr<Game> game;
+    std::shared_ptr<Scene> scene;
+    std::shared_ptr<Camera> camera;
+    std::shared_ptr<RenderTarget> renderTarget;
+  };
+
+  class IRenderableComponent {
+    public:
+      /**
+       * Retreive the list of render passes for this component.
+       * 
+       * @param ctx Context for the render pass.
+       * @return List of render passes.
+       */
+      virtual std::vector<std::shared_ptr<IRenderPass>> getPasses(
+        struct RenderPassContext &ctx
+      ) = 0;
+  };
+
+  /**
+   * Short-hand function to create a render pass.
+   * 
+   * @tparam S Shader type.
+   * @tparam D Shader's data type
+   * @param self Instance of the IRenderableComponent that is creating the pass.
+   * @param data Data to use for the render pass.
+   * @return Created render pass.
+   */
+  template<class S, typename D>
+  std::shared_ptr<struct IRenderPass> createRenderPass(
+    SceneComponent &self,
+    const D data,
+    const std::shared_ptr<Mesh> mesh = nullptr,
+    const enum MeshDrawMode drawMode = MeshDrawMode::TRIANGLES,
+    int32_t indiceStart = 0,
+    int32_t indiceCount = -1
+  ) {
+    return std::make_shared<struct RenderPass<S,D>>(
+      self,
+      data,
+      mesh,
+      drawMode,
+      indiceStart,
+      indiceCount
+    );
+  }
+}

src/dawn/component/display/material/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2023 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    Material.cpp
+    SimpleTexturedMaterial.cpp
+)

src/dawn/component/display/material/Material.hpp

@@ -5,9 +5,15 @@
 
 #pragma once
 #include "scene/SceneComponent.hpp"
+#include "component/display/IRenderableComponent.hpp"
 
 namespace Dawn {
-  class Material : public SceneComponent {
+  class Material :
+    public SceneComponent,
+    public IRenderableComponent
+  {
+    protected:
+
     public:
       void onInit() override;
       void onDispose() override;

src/dawn/component/display/material/SimpleTexturedMaterial.cpp

@@ -0,0 +1,32 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "SimpleTexturedMaterial.hpp"
+
+using namespace Dawn;
+
+struct Color SimpleTexturedMaterial::getColor() {
+  return this->data.color;
+}
+
+void SimpleTexturedMaterial::setColor(struct Color color) {
+  this->data.color = color;
+}
+
+std::vector<std::shared_ptr<IRenderPass>> SimpleTexturedMaterial::getPasses(
+  struct RenderPassContext &ctx
+) {
+  this->data.model = this->getItem()->getWorldTransform();
+  this->data.projection = ctx.camera->getProjection();
+  this->data.view = ctx.camera->getItem()->getWorldTransform();
+  this->data.color = COLOR_RED;
+
+  return {
+    createRenderPass<SimpleTexturedShader, struct SimpleTexturedShaderData>(
+      *this,
+      data
+    )
+  };
+}

src/dawn/component/display/material/SimpleTexturedMaterial.hpp

@@ -0,0 +1,32 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "component/display/material/Material.hpp"
+#include "display/shader/SimpleTexturedShader.hpp"
+
+namespace Dawn {
+  class SimpleTexturedMaterial : public Material {
+    private:
+      struct SimpleTexturedShaderData data;
+
+    public:
+      /**
+       * Returns the color of this material.
+       */
+      struct Color getColor();
+
+      /**
+       * Sets the color of this material.
+       * 
+       * @param color The color to set.
+       */
+      void setColor(struct Color color);
+
+      std::vector<std::shared_ptr<IRenderPass>> getPasses(
+        struct RenderPassContext &ctx
+      ) override;
+  };
+}

src/dawn/display/CMakeLists.txt

@@ -7,6 +7,8 @@
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     Color.cpp
+    RenderPipeline.cpp
+    IRenderHost.cpp
 )
 
 # Subdirs

src/dawn/display/Color.cpp

@@ -4,35 +4,37 @@
 // https://opensource.org/licenses/MIT
 
 #include "Color.hpp"
+#include "util/String.hpp"
+#include "assert/assert.hpp"
 
 using namespace Dawn;
 
 struct Color Color::fromString(const std::string str) {
   // Convert to lowercase
-  auto lower = stringToLowercase(str);
+  auto lower = String::toLowercase(str);
   
-  if(stringIncludes(lower, "cornflower")) {
+  if(String::includes(lower, "cornflower")) {
     return COLOR_CORNFLOWER_BLUE;
 
-  } else if(stringIncludes(lower, "magenta")) {
+  } else if(String::includes(lower, "magenta")) {
     return COLOR_MAGENTA;
 
-  } else if(stringIncludes(lower, "white")) {
+  } else if(String::includes(lower, "white")) {
     return COLOR_WHITE;
 
-  } else if(stringIncludes(lower, "black")) {
+  } else if(String::includes(lower, "black")) {
     return COLOR_BLACK;
 
-  } else if(stringIncludes(lower, "red")) {
+  } else if(String::includes(lower, "red")) {
     return COLOR_RED;
 
-  } else if(stringIncludes(lower, "green")) {
+  } else if(String::includes(lower, "green")) {
     return COLOR_GREEN;
 
-  } else if(stringIncludes(lower, "blue")) {
+  } else if(String::includes(lower, "blue")) {
     return COLOR_BLUE;
     
-  } else if(stringIncludes(lower, "transparent")) {
+  } else if(String::includes(lower, "transparent")) {
     return COLOR_TRANSPARENT;
   }
 
@@ -57,7 +59,7 @@ struct Color Color::fromString(const std::string str) {
   }
 
   // Split by comma 
-  auto splitByComma = stringSplit(str, ",");
+  auto splitByComma = String::split(str, ",");
   if(splitByComma.size() == 3) {
     // RGB
     return {

src/dawn/display/IRenderHost.cpp

@@ -0,0 +1,14 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "IRenderHost.hpp"
+
+using namespace Dawn;
+
+IRenderHost::IRenderHost() : renderPipeline(), shaderManager() {
+}
+
+IRenderHost::~IRenderHost() {
+}

src/dawn/display/IRenderHost.hpp

@@ -6,12 +6,22 @@
 #pragma once
 #include "dawnlibs.hpp"
 #include "display/RenderTarget.hpp"
+#include "display/RenderPipeline.hpp"
+#include "display/shader/ShaderManager.hpp"
 
 namespace Dawn {
   class Game;
 
   class IRenderHost {
     public:
+      RenderPipeline renderPipeline;
+      ShaderManager shaderManager;
+
+      /**
+       * Creates a render host.
+       */
+      IRenderHost();
+
       /**
        * Initializes the render host, called by the game during the initial 
        * set up of the engine.
@@ -22,9 +32,9 @@ namespace Dawn {
 
       /**
        * Performs an update/tick of the render host. This would be the game 
-       * asking the RenderHost to the rendering.
+       * asking the RenderHost to do the rendering.
        */
-      virtual void update() = 0;
+      virtual void update(const std::shared_ptr<Game> game) = 0;
 
       /**
        * Overridable request from the game that asks if the RenderHost has any
@@ -46,8 +56,6 @@ namespace Dawn {
       /**
        * Destroys the render host.
        */
-      virtual ~IRenderHost() {
+      virtual ~IRenderHost();
-
-      }
   };
 }

src/dawn/display/RenderPipeline.cpp

@@ -0,0 +1,110 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "assert/assert.hpp"
+#include "RenderPipeline.hpp"
+#include "game/Game.hpp"
+#include "scene/Scene.hpp"
+#include "component/display/Camera.hpp"
+#include "component/display/IRenderableComponent.hpp"
+
+using namespace Dawn;
+
+RenderPipeline::RenderPipeline() {
+  
+}
+
+void RenderPipeline::render(
+  const std::shared_ptr<Game> game
+) {
+  assertNotNull(game, "Game cannot be null");
+  
+  auto scene = game->getCurrentScene();
+  if(!scene) return;
+
+  this->renderScene(game, scene);
+}
+
+void RenderPipeline::renderScene(
+  const std::shared_ptr<Game> game,
+  const std::shared_ptr<Scene> scene
+) {
+  assertNotNull(game, "Game cannot be null");
+  assertNotNull(scene, "Scene cannot be null");
+
+  // TODO: Render Subscenes First
+
+  // Get a list of all cameras in the scene
+  auto cameras = scene->findComponents<Camera>();
+  auto backBuffer = scene->getGame()->renderHost.getBackBufferRenderTarget();
+
+  std::shared_ptr<Camera> backbufferCamera = nullptr;
+  for(auto camera : cameras) {
+    auto rt = camera->getRenderTarget();
+    // Is this camera the backbuffer camera?
+    if(rt == backBuffer || rt == nullptr) {
+      backbufferCamera = camera;
+      continue;
+    }
+
+    // Render scene with this camera
+    renderSceneCamera(game, scene, camera, camera->getRenderTarget());
+  }
+
+  if(backbufferCamera) {
+    // Render the backbuffer camera
+    renderSceneCamera(game, scene, backbufferCamera, backBuffer);
+  }
+}
+
+void RenderPipeline::renderSceneCamera(
+  const std::shared_ptr<Game> game,
+  const std::shared_ptr<Scene> scene,
+  const std::shared_ptr<Camera> camera,
+  const std::shared_ptr<RenderTarget> renderTarget
+) {
+  assertNotNull(game, "Game cannot be null");
+  assertNotNull(scene, "Scene cannot be null"); 
+  assertNotNull(camera, "Camera cannot be null");
+
+  struct RenderPassContext ctx = {
+    game,
+    scene,
+    camera,
+    renderTarget
+  };
+
+  // Get list of renderables
+  std::vector<std::shared_ptr<struct IRenderPass>> renderPasses;
+  auto renderables = scene->findComponents<IRenderableComponent>();
+  for(auto renderable : renderables) {
+    auto rp = renderable->getPasses(ctx);
+    renderPasses.insert(renderPasses.end(), rp.begin(), rp.end());
+  }
+
+  // Sort the render passes
+  
+  // TODO: Make clearing the buffers editable!
+  renderTarget->bind();
+  renderTarget->clear(
+    RENDER_TARGET_CLEAR_COLOR |
+    RENDER_TARGET_CLEAR_DEPTH
+  );
+  
+  std::for_each(
+    renderPasses.begin(),
+    renderPasses.end(),
+    [&](std::shared_ptr<struct IRenderPass> pass) {
+      pass->bind();
+      pass->setData();
+      pass->upload();
+      pass->draw();
+    }
+  );
+}
+
+RenderPipeline::~RenderPipeline() {
+
+}

src/dawn/display/RenderPipeline.hpp

@@ -0,0 +1,63 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawnlibs.hpp"
+
+namespace Dawn {
+  class Game;
+  class Scene;
+  class Camera;
+  class RenderTarget;
+
+  class RenderPipeline {
+    public:
+      /**
+       * Creates a new RenderPipeline.
+       */
+      RenderPipeline();
+
+      /**
+       * Renders the game. This will render the current scene.
+       * 
+       * @param game Game to render.
+       */
+      void render(
+        const std::shared_ptr<Game> game
+      );
+
+      /**
+       * Renders a specific scene. This will render all cameras within the
+       * scene.
+       * 
+       * @param game Game to render.
+       * @param scene Scene to render.
+       */
+      void renderScene(
+        const std::shared_ptr<Game> game,
+        const std::shared_ptr<Scene> scene
+      );
+
+      /**
+       * Renders a specific scene with a specific camera.
+       * 
+       * @param game Game to render.
+       * @param scene Scene to render.
+       * @param camera Camera to render.
+       * @param renderTarget Render target to render to.
+       */
+      void renderSceneCamera(
+        const std::shared_ptr<Game> game,
+        const std::shared_ptr<Scene> scene,
+        const std::shared_ptr<Camera> camera,
+        const std::shared_ptr<RenderTarget> renderTarget
+      );
+
+      /**
+       * Destroys the RenderPipeline.
+       */
+      virtual ~RenderPipeline();
+  };
+}

src/dawn/display/RenderTarget.hpp

@@ -6,10 +6,8 @@
 #pragma once
 #include "dawnlibs.hpp"
 
-enum RenderTargetClearFlag {
+#define RENDER_TARGET_CLEAR_COLOR 1 << 0
-  COLOR = 1 << 0,
+#define RENDER_TARGET_CLEAR_DEPTH 1 << 1
-  DEPTH = 1 << 0
-};
 
 namespace Dawn {
   class RenderTarget {
@@ -51,7 +49,7 @@ namespace Dawn {
        * 
        * @param clearFlags Flags to request what is going to be cleared.
        */
-      virtual void clear(const enum RenderTargetClearFlag clearFlags) = 0;
+      virtual void clear(const int32_t clearFlags) = 0;
 
       /**
        * Bind the render target for rendering to. The proceeding render requests

src/dawn/display/mesh/CubeMesh.cpp

@@ -7,7 +7,7 @@
 
 using namespace Dawn;
 
-void Dawn::CubeMesh::buffer(
+void CubeMesh::buffer(
   const std::shared_ptr<Mesh> mesh,
   const glm::vec3 pos,
   const glm::vec3 size,

src/dawn/display/shader/IShader.hpp

@@ -7,9 +7,29 @@
 #include "dawnlibs.hpp"
 
 namespace Dawn {
-  template<struct T>
+  enum ShaderParameterType {
-  class IShader {
+    VEC2,
-    private:
+    VEC3,
+    VEC4,
+    MAT3,
+    MAT4,
+    COLOR,
+    FLOAT,
+    INT,
+    TEXTURE,
+    BOOLEAN
+  };
+
+  class IShaderBase {
+    public:
+      virtual ~IShaderBase() {
+
+      }
+  };
+
+  template<typename T>
+  class IShader : public IShaderBase {
+    protected:
       T data;
 
     public:

src/dawn/display/shader/IShaderStage.cpp

@@ -7,7 +7,7 @@
 
 using namespace Dawn;
 
-IShaderStage::IShaderStage(const enum ShaderType type) :
+IShaderStage::IShaderStage(const enum ShaderStageType type) :
   type(type)
 {
   

src/dawn/display/shader/IShaderStage.hpp

@@ -7,20 +7,22 @@
 #include "dawnlibs.hpp"
 
 namespace Dawn {
-  enum ShaderType {
+  enum ShaderStageType {
     VERTEX,
     FRAGMENT,
-    COMPUTE
+    // COMPUTE
   };
 
   class IShaderStage {
     public:
+      const enum ShaderStageType type;
+      
       /**
        * Constructs a new Shader Stage.
        * 
        * @param type Type of shader stage.
        */
-      IShaderStage(const enum ShaderType type);
+      IShaderStage(const enum ShaderStageType type);
 
       /**
        * Destroy the IShaderStage object

src/dawn/display/shader/ShaderManager.hpp

@@ -0,0 +1,45 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "display/shader/Shader.hpp"
+
+namespace Dawn {
+  class ShaderManager {
+    private:
+      std::vector<std::shared_ptr<IShaderBase>> shaders;
+
+    public:
+      /**
+       * Retreives an instance of the shader from the shader manager. If the
+       * shader does not exist it will be created.
+       * 
+       * @tparam T Type of shader to retreive.
+       * @return Shader instance.
+       */
+      template<class T>
+      std::shared_ptr<T> getShader() {
+        auto itShaders = shaders.begin();
+        while(itShaders != shaders.end()) {
+          // auto shader = itShaders->lock();
+          // if(!shader) {
+          //   itShaders = shaders.erase(itShaders);
+          //   continue;
+          // }
+          // std::shared_ptr<T> casted = std::dynamic_pointer_cast<T>(shader);
+
+          auto shader = *itShaders;
+          std::shared_ptr<T> casted = std::dynamic_pointer_cast<T>(shader);
+          if(casted) return casted;
+          itShaders++;
+        }
+
+        auto newShader = std::make_shared<T>();
+        shaders.push_back(newShader);
+        newShader->init();
+        return newShader;
+      }
+  };
+}

src/dawn/game/Game.cpp

@@ -22,7 +22,7 @@ void Game::init() {
 }
 
 void Game::update() {
-  renderHost.update();
+  renderHost.update(shared_from_this());
 
   if(nextFrameScene) {
     nextFrameScene->stage();
@@ -37,6 +37,10 @@ bool_t Game::isCloseRequested() {
   );
 }
 
+std::shared_ptr<Scene> Game::getCurrentScene() {
+  return currentScene;
+}
+
 Game::~Game() {
   std::cout << "Game successfully destructed" << std::endl;
 }

src/dawn/game/Game.hpp

@@ -44,6 +44,13 @@ namespace Dawn {
        */
       bool_t isCloseRequested();
 
+      /**
+       * Returns the current scene that is active.
+       * 
+       * @return The current scene.
+       */
+      std::shared_ptr<Scene> getCurrentScene();
+
       /**
        * Deconstructs the game instance, does not deinitialize anything.
        */

src/dawn/scene/Scene.hpp

@@ -44,6 +44,21 @@ namespace Dawn {
        */
       std::shared_ptr<SceneItem> createSceneItem();
 
+      /**
+       * Returns a list of scene components that match the given type.
+       * 
+       * @return List of scene components matching the type.
+       */
+      template<class T>
+      std::vector<std::shared_ptr<T>> findComponents() {
+        std::vector<std::shared_ptr<T>> components;
+        for(auto item : sceneItems) {
+          auto component = item->getComponent<T>();
+          if(component) components.push_back(component);
+        }
+        return components;
+      }
+
       /**
        * Destroys the scene object and cleans up all of its children.
        */

src/dawn/scene/SceneComponent.cpp

@@ -5,8 +5,8 @@
 
 #include "assert/assert.hpp"
 #include "util/Flag.hpp"
-#include "scene/Scene.hpp"
 #include "game/Game.hpp"
+#include "scene/Scene.hpp"
 
 using namespace Dawn;
 

src/dawn/scene/item/SceneItemComponents.hpp

@@ -49,6 +49,20 @@ namespace Dawn {
         return component;
       }
 
+      /**
+       * Returns a list of components that match the given type.
+       * 
+       * @return List of components matching the type.
+       */
+      template<class T>
+      std::shared_ptr<T> getComponent() {
+        for(auto component : this->components) {
+          auto cast = std::dynamic_pointer_cast<T>(component);
+          if(cast) return cast;
+        }
+        return nullptr;
+      }
+
       virtual ~SceneItemComponents();
   };
 }

src/dawn/scene/item/SceneItemTransform.cpp

@@ -84,6 +84,10 @@ glm::mat4 SceneItemTransform::getLocalTransform() {
   return this->transformLocal;
 }
 
+glm::mat4 SceneItemTransform::getWorldTransform() {
+  return this->transformWorld;
+}
+
 void SceneItemTransform::setWorldTransform(const glm::mat4 transform) {
   this->transformWorld = transform;
   this->updateLocalTransformFromWorldTransform();

src/dawn/scene/item/SceneItemTransform.hpp

@@ -69,6 +69,13 @@ namespace Dawn {
        */
       glm::mat4 getLocalTransform();
 
+      /**
+       * Returns the world transform of this item (relative to scene root).
+       * 
+       * @return World transform of this item.
+       */
+      glm::mat4 getWorldTransform();
+      
       /**
        * Sets the transform of this item within world space (relative to scene
        * root)

src/dawn/util/CMakeLists.txt

@@ -0,0 +1,9 @@
+# Copyright (c) 2023 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    String.cpp
+)

src/dawn/util/String.cpp

@@ -0,0 +1,36 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "String.hpp"
+
+using namespace Dawn;
+
+std::string String::toLowercase(const std::string &str) {
+  std::string result = str;
+  std::transform(result.begin(), result.end(), result.begin(), ::tolower);
+  return result;
+}
+
+bool_t String::includes(const std::string &str, const std::string &needle) {
+  return str.find(needle) != std::string::npos;
+}
+
+std::vector<std::string> String::split(
+  const std::string &s,
+  const std::string &delim
+) {
+  size_t posStart = 0, posEnd, delimLength = delim.length();
+  std::string token;
+  std::vector<std::string> res;
+
+  while((posEnd = s.find(delim, posStart)) != std::string::npos) {
+    token = s.substr(posStart, posEnd - posStart);
+    posStart = posEnd + delimLength;
+    res.push_back (token);
+  }
+
+  res.push_back(s.substr(posStart));
+  return res;
+}

src/dawn/util/String.hpp

@@ -0,0 +1,41 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawnlibs.hpp"
+
+namespace Dawn {
+  class String {
+    public:
+      /**
+       * Converts the given string to lowercase.
+       * 
+       * @param str String to convert.
+       * @return The lowercase string.
+       */
+      static std::string toLowercase(const std::string &str);
+
+      /**
+       * Checks if the given string includes the given needle.
+       * 
+       * @param str String to check.
+       * @param needle String to check for.
+       * @return True if the string includes the needle.
+       */
+      static bool_t includes(const std::string &str, const std::string &needle);
+
+      /**
+       * Splits the given string by the given delimiter.
+       * 
+       * @param str String to split.
+       * @param delim Delimiter to split by.
+       * @return The split string.
+       */
+      static std::vector<std::string> split(
+        const std::string &str,
+        const std::string &delim
+      );
+  };
+}

src/dawnglfw/display/RenderHost.cpp

@@ -7,14 +7,15 @@
 #include "assert/assertgl.hpp"
 #include "assert/assert.hpp"
 #include "game/Game.hpp"
+#include "display/RenderPipeline.hpp"
 
 using namespace Dawn;
 
-RenderHost::RenderHost() {
+RenderHost::RenderHost() : IRenderHost() {
 
 }
 
-void RenderHost::init(std::shared_ptr<Game> game) {
+void RenderHost::init(const std::shared_ptr<Game> game) {
   // Init GLFW
   if(!glfwInit()) {
     assertUnreachable("Failed to initialize GLFW!");
@@ -80,7 +81,27 @@ void RenderHost::init(std::shared_ptr<Game> game) {
   // });
 }
 
-void RenderHost::update() {
+void RenderHost::update(const std::shared_ptr<Game> game) {
+
+  
+  // Prepare the initial values
+  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+  assertNoGLError();
+  glBlendFuncSeparate(
+    GL_SRC_ALPHA,
+    GL_ONE_MINUS_SRC_ALPHA,
+    GL_ONE,
+    GL_ONE_MINUS_SRC_ALPHA
+  );
+  assertNoGLError();
+  glDepthMask(GL_TRUE);
+  assertNoGLError();
+  glDepthFunc(GL_LESS);
+  assertNoGLError();
+
+  // Pipeline
+  renderPipeline.render(game);
+  
   // Tick the engine.
   glfwSwapBuffers(window);
   

src/dawnglfw/display/RenderHost.hpp

@@ -25,8 +25,8 @@ namespace Dawn {
        */
       RenderHost();
 
-      void init(std::shared_ptr<Game> game) override;
+      void init(const std::shared_ptr<Game> game) override;
-      void update() override;
+      void update(const std::shared_ptr<Game> game) override;
       bool_t isCloseRequested() override;
       std::shared_ptr<RenderTarget> getBackBufferRenderTarget() override;
 

src/dawnhelloworld/scene/HelloWorldScene.cpp

@@ -6,6 +6,7 @@
 #include "scene/SceneList.hpp"
 #include "component/display/Camera.hpp"
 #include "component/display/MeshRenderer.hpp"
+#include "component/display/material/SimpleTexturedMaterial.hpp"
 #include "display/mesh/CubeMesh.hpp"
 
 using namespace Dawn;
@@ -18,9 +19,11 @@ void Dawn::helloWorldScene(Scene &s) {
   cameraItem->lookAt({ 3, 3, 3}, { 0, 0, 0 }, { 0, 1, 0 });
 
   auto cubeMesh = std::make_shared<Mesh>();
+  cubeMesh->createBuffers(CUBE_VERTICE_COUNT, CUBE_INDICE_COUNT);
   CubeMesh::buffer(cubeMesh, glm::vec3(-1, -1, -1), glm::vec3(1, 1, 1), 0, 0);
 
   auto cubeItem = s.createSceneItem();
   auto cubeMeshRenderer = cubeItem->addComponent<MeshRenderer>();
   cubeMeshRenderer->mesh = cubeMesh;
+  auto cubeMaterial = cubeItem->addComponent<SimpleTexturedMaterial>();
 }

src/dawnopengl/display/BackBufferRenderTarget.cpp

@@ -43,17 +43,15 @@ void BackBufferRenderTarget::setClearColor(const struct Color color) {
   this->clearColor = color;
 }
 
-void BackBufferRenderTarget::clear(
+void BackBufferRenderTarget::clear(const int32_t clearFlags) {
-  const enum RenderTargetClearFlag clearFlags
-) {
   glClearColor(clearColor.r, clearColor.g, clearColor.b, clearColor.a);
   assertNoGLError();
 
   GLbitfield mask = 0;
-  if(Flag::isOn(clearFlags, RenderTargetClearFlag::COLOR)) {
+  if(Flag::isOn(clearFlags, RENDER_TARGET_CLEAR_COLOR)) {
     mask |= GL_COLOR_BUFFER_BIT;
   }
-  if(Flag::isOn(clearFlags, RenderTargetClearFlag::DEPTH)) {
+  if(Flag::isOn(clearFlags, RENDER_TARGET_CLEAR_DEPTH)) {
     mask |= GL_DEPTH_BUFFER_BIT;
   }
 

src/dawnopengl/display/BackBufferRenderTarget.hpp

@@ -26,7 +26,7 @@ namespace Dawn {
       float_t getWidth() override;
       float_t getHeight() override;
       void setClearColor(const struct Color color) override;
-      void clear(const enum RenderTargetClearFlag) override;
+      void clear(const int32_t) override;
       void bind() override;
 
       /**

src/dawnopengl/display/shader/CMakeLists.txt

@@ -8,4 +8,5 @@ target_sources(${DAWN_TARGET_NAME}
   PRIVATE
     Shader.cpp
     ShaderStage.cpp
+    SimpleTexturedShader.cpp
 )

src/dawnopengl/display/shader/Shader.cpp

@@ -4,3 +4,5 @@
 // https://opensource.org/licenses/MIT
 
 #include "Shader.hpp"
+
+using namespace Dawn;

src/dawnopengl/display/shader/Shader.hpp

@@ -4,13 +4,168 @@
 // https://opensource.org/licenses/MIT
 
 #pragma once
-#include "display/ShaderStage.hpp"
+#include "display/shader/ShaderStage.hpp"
-#include "display/IShader.hpp"
+#include "display/shader/IShader.hpp"
+#include "assert/assert.hpp"
+#include "assert/assertgl.hpp"
+#include "display/Color.hpp"
 
 namespace Dawn {
-  template<struct T>
+  enum ShaderOpenGLVariant {
-  class Shader : public IShader<T> {
+    GLSL_330_CORE
-    public:
+  };
 
+  struct ShaderOpenGLParameter {
+    std::string name;
+    size_t offset;
+    enum ShaderParameterType type;
+
+    GLint location = -1;
+
+    ShaderOpenGLParameter(
+      const std::string &name,
+      const void *offset,
+      const enum ShaderParameterType type
+    ) {
+      this->name = name;
+      this->offset = (size_t)offset;
+      this->type = type;
+    }
+  };
+
+  template<typename T>
+  class Shader : public IShader<T> {
+    private:
+      std::vector<std::shared_ptr<ShaderStage>> stages;
+      std::vector<struct ShaderOpenGLParameter> parameters;
+      enum ShaderOpenGLVariant variant;
+
+      GLuint shaderProgram = -1;
+
+    protected:
+      virtual void getStages(
+        const enum ShaderOpenGLVariant variant,
+        const T *rel,
+        std::vector<std::shared_ptr<ShaderStage>> &stages,
+        std::vector<struct ShaderOpenGLParameter> &parameters
+      ) = 0;
+
+    public:
+      /**
+       * Initializes the shader, this needs to be called before the shader can
+       * be used.
+       */
+      void init() override {
+        // Determine which kind of OpenGL shader to use.
+        variant = GLSL_330_CORE;
+
+        // Now get the stages
+        T dummy;
+        this->getStages(
+          variant,
+          &dummy,
+          stages,
+          parameters
+        );
+
+        // Create the shader program
+        shaderProgram = glCreateProgram();
+        assertNoGLError();
+
+        // Attach all the stages
+        for(auto stage : stages) {
+          glAttachShader(shaderProgram, stage->id);
+          assertNoGLError();
+        }
+
+        // Link and verify the program
+        glLinkProgram(shaderProgram);
+        assertNoGLError();
+
+        GLint status;
+        glGetProgramiv(shaderProgram, GL_LINK_STATUS, &status);
+        assertNoGLError();
+        assertTrue(status == GL_TRUE, "Failed to link shader program.");
+
+        // Map parameters correctly.
+        std::for_each(
+          parameters.begin(),
+          parameters.end(),
+          [&](struct ShaderOpenGLParameter &param) {
+            // Correct offset
+            param.offset = param.offset - (size_t)(&dummy);
+            param.location = glGetUniformLocation(
+              shaderProgram,
+              param.name.c_str()
+            );
+            assertNoGLError();
+            assertTrue(
+              param.location != -1,
+              "Failed to get location for parameter %s.",
+              param.name.c_str()
+            );
+          }
+        );
+
+        this->bind();
+      }
+
+      /**
+       * Binds the shader as the current one, does not upload any data, somewhat
+       * relies on something else uploading the data.
+       */
+      void bind() override {
+        glUseProgram(shaderProgram);
+        assertNoGLError();
+      }
+
+      /**
+       * Uploads the data to the GPU.
+       */
+      void upload() override {
+        switch(this->variant) {
+          case ShaderOpenGLVariant::GLSL_330_CORE:
+            for(auto param : parameters) {
+              void *value = (void*)(
+                ((size_t)&this->data) + param.offset
+              );
+
+              switch(param.type) {
+                case ShaderParameterType::MAT4: {
+                  glm::mat4 *matrix = (glm::mat4 *)value;
+                  glUniformMatrix4fv(
+                    param.location, 1, GL_FALSE, glm::value_ptr(*matrix)
+                  );
+                  break;
+                }
+                
+                case ShaderParameterType::COLOR: {
+                  auto color = (Color *)value;
+                  glUniform4f(
+                    param.location,
+                    color->r,
+                    color->g,
+                    color->b,
+                    color->a
+                  );
+                  break;
+                }
+
+                default: {
+                  assertUnreachable("Unsupported ShaderParameterType");
+                }
+              }
+
+              assertNoGLError();
+            }
+            break;
+
+          default:
+            assertUnreachable("Unsupported ShaderOpenGLVariant");
+        }
+      }
+
+      ~Shader() {
+      }
   };
 }

src/dawnopengl/display/shader/ShaderStage.cpp

@@ -3,15 +3,67 @@
 // This software is released under the MIT License.
 // https://opensource.org/licenses/MIT
 
+#include "assert/assertgl.hpp"
+#include "assert/assert.hpp"
 #include "ShaderStage.hpp"
 
 using namespace Dawn;
 
-ShaderStage::ShaderStage(const enum ShaderType type) : type(type) {
+ShaderStage::ShaderStage(
-}
+  const enum ShaderStageType type,
+  const std::string source
+) : IShaderStage(type) {
+  // Get OpenGL Shader Type
+  GLenum shaderType;
+  switch(this->type) {
+    case ShaderStageType::VERTEX:
+      shaderType = GL_VERTEX_SHADER;
+      break;
 
-void ShaderStage::compile(const std::string source) {
+    case ShaderStageType::FRAGMENT:
+      shaderType = GL_FRAGMENT_SHADER;
+      break;
+
+    // case ShaderStageType::COMPUTE:
+    //   shaderType = GL_COMPUTE;
+    //   break;
+
+    default:
+      assertUnreachable("Unknown ShaderStageType");
+  }
+
+  // Initialize the shader
+  this->id = glCreateShader(shaderType);
+  assertNoGLError();
+
+  // Compile the shader
+  auto cSource = source.c_str();
+  glShaderSource(this->id, 1, &cSource, NULL);
+  assertNoGLError();
+  glCompileShader(this->id);
+  assertNoGLError();
+
+  // Validate
+  GLint status;
+  glGetShaderiv(this->id, GL_COMPILE_STATUS, &status);
+  assertNoGLError();
+
+  if(!status) {
+    // Failed to compile
+    GLint logLength;
+    glGetShaderiv(this->id, GL_INFO_LOG_LENGTH, &logLength);
+    assertNoGLError();
+
+    GLchar *log = new GLchar[logLength];
+    glGetShaderInfoLog(this->id, logLength, NULL, log);
+    assertNoGLError();
+    assertUnreachable("Failed to compile shader stage:\n%s", log);
+  }
 }
 
 ShaderStage::~ShaderStage() {
+  if(this->id != -1) {
+    glDeleteShader(this->id);
+    assertNoGLError();
+  }
 }

src/dawnopengl/display/shader/ShaderStage.hpp

@@ -5,32 +5,24 @@
 
 #pragma once
 #include "dawnopengl.hpp"
-#include "dawnlibs.hpp"
 #include "display/shader/IShaderStage.hpp"
 
 namespace Dawn {
-  class ShaderStage {
+  class ShaderStage : public IShaderStage {
     public:
       GLuint id = -1;
-      const enum ShaderType type;
 
       /**
        * Constructs a new ShaderStage.
        * 
        * @param type The type of shader this is.
-       */
-      ShaderStage(const enum ShaderType type);
-
-      /**
-       * Compiles the shader stage.
-       * 
        * @param source The source code to compile.
        */
-      void compile(const std::string source);
+      ShaderStage(const enum ShaderStageType type, const std::string source);
 
       /**
        * Disposes of the shader stage.
        */
-      virtual ~ShaderStage();
+      ~ShaderStage();
   };
 }

src/dawnopengl/display/shader/SimpleTexturedShader.cpp

@@ -0,0 +1,78 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "display/shader/SimpleTexturedShader.hpp"
+
+using namespace Dawn;
+
+void SimpleTexturedShader::getStages(
+  const enum ShaderOpenGLVariant variant,
+  const struct SimpleTexturedShaderData *rel,
+  std::vector<std::shared_ptr<ShaderStage>> &stages,
+  std::vector<struct ShaderOpenGLParameter> &parameters
+) {
+  // Stages
+  std::shared_ptr<ShaderStage> vertex;
+  std::shared_ptr<ShaderStage> fragment;
+
+  switch(variant) {
+    case ShaderOpenGLVariant::GLSL_330_CORE:
+      vertex = std::make_shared<ShaderStage>(
+        ShaderStageType::VERTEX,
+        "#version 330 core\n"
+        "layout (location = 0) in vec3 aPos;\n"
+        "uniform mat4 u_Projection;\n"
+        "uniform mat4 u_View;\n"
+        "uniform mat4 u_Model;\n"
+        "void main() {\n"
+          "gl_Position = u_Projection * u_View * u_Model * vec4(aPos, 1.0);\n"
+        "}"
+      );
+      
+      fragment = std::make_shared<ShaderStage>(
+        ShaderStageType::FRAGMENT,
+        "#version 330 core\n"
+        "in vec2 o_TextCoord;\n"
+        "out vec4 o_Color;\n"
+        "uniform vec4 u_Color;\n"
+        "void main() {\n"
+          "o_Color = u_Color;"
+        "}\n"
+      );
+      break;
+
+    default:
+      assertUnreachable("Unsupported ShaderOpenGLVariant");
+  }
+
+  // Add stages
+  stages.push_back(vertex);
+  stages.push_back(fragment);
+
+  // Parameters
+  parameters.push_back(ShaderOpenGLParameter(
+    "u_Projection",
+    &rel->projection,
+    ShaderParameterType::MAT4
+  ));
+
+  parameters.push_back(ShaderOpenGLParameter(
+    "u_View",
+    &rel->view,
+    ShaderParameterType::MAT4
+  ));
+
+  parameters.push_back(ShaderOpenGLParameter(
+    "u_Model",
+    &rel->model,
+    ShaderParameterType::MAT4
+  ));
+
+  parameters.push_back(ShaderOpenGLParameter(
+    "u_Color",
+    &rel->color,
+    ShaderParameterType::COLOR
+  ));
+}

src/dawnopengl/display/shader/SimpleTexturedShader.hpp

@@ -0,0 +1,26 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "display/shader/Shader.hpp"
+
+namespace Dawn {
+  struct SimpleTexturedShaderData {
+    glm::mat4 projection;
+    glm::mat4 view;
+    glm::mat4 model;
+    struct Color color = COLOR_WHITE;
+  };
+
+  class SimpleTexturedShader : public Shader<SimpleTexturedShaderData> {
+    protected:
+      void getStages(
+        const enum ShaderOpenGLVariant variant,
+        const struct SimpleTexturedShaderData *rel,
+        std::vector<std::shared_ptr<ShaderStage>> &stages,
+        std::vector<struct ShaderOpenGLParameter> &parameters
+      ) override;
+  };
+}