First render.

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 {
-  COLOR = 1 << 0,
-  DEPTH = 1 << 0
-};
+#define RENDER_TARGET_CLEAR_COLOR 1 << 0
+#define RENDER_TARGET_CLEAR_DEPTH 1 << 1
 
 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>
-  class IShader {
-    private:
+  enum ShaderParameterType {
+    VEC2,
+    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;
+      }
+  };
+}