diff --git a/engine/include/sophia/application.hpp b/engine/include/sophia/application.hpp
index c4fc790..cb75d9b 100644
--- a/engine/include/sophia/application.hpp
+++ b/engine/include/sophia/application.hpp
@@ -1,7 +1,14 @@
 #pragma once
 
+#include <cstdlib>
+#include <iostream>
 #include <memory>
+#include <sophia/camera_2d.hpp>
+#include <sophia/canvas.hpp>
+#include <sophia/frame_info.hpp>
+#include <sophia/types.hpp>
 #include <string>
+#include <vector>
 
 namespace sophia {
 
@@ -11,20 +18,47 @@ class Application {
     int width;
     int height;
     std::string name;
-    bool headless = false;
   };
 
   Application(const Application&) = delete;
   Application& operator=(const Application&) = delete;
 
   Application(const Config& config);
-  ~Application();
+  virtual ~Application();
 
   void run();
 
+  static void setCommandLineArgs(int argc, const char* const* argv);
+
+ protected:
+  virtual void onCreate() {}
+  virtual void onUpdate(const FrameInfo& frameInfo) { (void)frameInfo; }
+  virtual void onRender() {}
+  virtual void onDestroy() {}
+
+  Canvas canvas;
+  Camera2D camera;
+  std::vector<std::string> args;
+
  private:
+  friend class Canvas;
+
+  void pushModel(std::vector<CanvasVertex> vertices, std::vector<u32> indices);
+  void clearModels();
+
   class Impl;
   std::unique_ptr<Impl> impl;
 };
 
 }  // namespace sophia
+
+#define SOPHIA_MAIN(AppType)                             \
+  int main(int argc, const char** argv) {                \
+    std::cout << __FILE__ << "::" << __LINE__ << '\n';   \
+                                                         \
+    sophia::Application::setCommandLineArgs(argc, argv); \
+    AppType app;                                         \
+    app.run();                                           \
+                                                         \
+    return EXIT_SUCCESS;                                 \
+  }
diff --git a/engine/src/application.cpp b/engine/src/application.cpp
index 52e1170..88cde93 100644
--- a/engine/src/application.cpp
+++ b/engine/src/application.cpp
@@ -1,25 +1,257 @@
+#include <array>
+#include <chrono>
+#include <cstddef>
 #include <sophia/application.hpp>
+#include <sophia/util/logger.hpp>
+#include <string>
+#include <utility>
+#include <vector>
+#include <vulkan/vulkan.hpp>
 
-#include "engine.hpp"
+#define GLM_FORCE_RADIANS
+#define GLM_FORCE_DEPTH_ZERO_TO_ONE
+#include <glm/glm.hpp>
+
+#include "buffer.hpp"
+#include "device.hpp"
+#include "model.hpp"
+#include "pipelines/graphics_pipeline.hpp"
+#include "render_context.hpp"
+#include "shader.hpp"
+#include "systems/model_render_system.hpp"
+#include "window.hpp"
 
 namespace sophia {
 
-class Application::Impl {
- public:
-  Impl(const Application::Config& config)
-      : engine{{config.width, config.height, config.name, config.headless}} {}
+namespace {
 
-  void run() { engine.run(); }
-
- private:
-  Engine engine;
+struct Vertex {
+  glm::vec2 position;
+  glm::vec3 color;
 };
 
+struct PushConstants {
+  glm::mat4 transform;
+  glm::vec4 color;
+  glm::vec4 data;
+};
+
+std::vector<std::string> commandLineArgs;
+
+}  // namespace
+
+class Application::Impl {
+ public:
+  Impl(Application& application, const Application::Config& config)
+      : application{application},
+        config{config},
+        window{config.width, config.height, config.name},
+        device{&window},
+        renderContext{window, device} {}
+
+  /*void run(const std::string& vertShaderPath,
+             const std::string& fragShaderPath) {
+      log::info("Running Render Triangle Test...");
+
+      RenderContext renderContext{window, device};
+
+      auto vertexShader = Shader::Builder()
+                              .fromGLSL(vertShaderPath)
+                              .setStage(ShaderStage::VERTEX)
+                              .build();
+      auto fragmentShader = Shader::Builder()
+                                .fromGLSL(fragShaderPath)
+                                .setStage(ShaderStage::FRAGMENT)
+                                .build();
+
+      vk::PushConstantRange pushConstantRange{};
+      pushConstantRange.stageFlags =
+          vk::ShaderStageFlagBits::eVertex | vk::ShaderStageFlagBits::eFragment;
+      pushConstantRange.offset = 0;
+      pushConstantRange.size = sizeof(PushConstants);
+
+      vk::PipelineLayoutCreateInfo pipelineLayoutInfo{};
+      pipelineLayoutInfo.pushConstantRangeCount = 1;
+      pipelineLayoutInfo.pPushConstantRanges = &pushConstantRange;
+
+      vk::UniquePipelineLayout pipelineLayout =
+          device.get()->createPipelineLayoutUnique(pipelineLayoutInfo);
+
+      std::vector<vk::VertexInputBindingDescription> bindingDescriptions{
+          {0, sizeof(Vertex), vk::VertexInputRate::eVertex}};
+      std::vector<vk::VertexInputAttributeDescription> attributeDescriptions{
+          {0, 0, vk::Format::eR32G32Sfloat, offsetof(Vertex, position)},
+          {1, 0, vk::Format::eR32G32B32Sfloat, offsetof(Vertex, color)}};
+
+      std::unique_ptr<sophia::GraphicsPipeline> graphicsPipeline =
+          GraphicsPipeline::Builder(device)
+              .setVertexShader(*vertexShader)
+              .setFragmentShader(*fragmentShader)
+              .setPipelineLayout(pipelineLayout.get())
+              .setColorAttachmentFormats({renderContext.getImageFormat()})
+              .setVertexInput(bindingDescriptions, attributeDescriptions)
+              .build();
+
+      // Oversized triangle covering the full screen so the fragment shader runs
+      // for every pixel.
+      std::vector<Vertex> vertices{
+          {{-1.0f, -1.0f}, {1.0f, 0.0f, 0.0f}},
+          {{3.0f, -1.0f}, {0.0f, 1.0f, 0.0f}},
+          {{-1.0f, 3.0f}, {0.0f, 0.0f, 1.0f}},
+      };
+
+      Buffer vertexBuffer{device, sizeof(Vertex),
+                          static_cast<u32>(vertices.size()),
+                          vk::BufferUsageFlagBits::eVertexBuffer,
+                          vk::MemoryPropertyFlagBits::eHostVisible |
+                              vk::MemoryPropertyFlagBits::eHostCoherent};
+      vertexBuffer.map();
+      vertexBuffer.writeToBuffer(vertices.data(),
+                                 sizeof(Vertex) * vertices.size());
+      vertexBuffer.unmap();
+
+
+    }*/
+
+  void run() {
+    ModelRenderSystem modelRenderSystem{device, renderContext};
+
+    this->application.onCreate();
+
+    auto startTime = std::chrono::high_resolution_clock::now();
+    auto currentTime = startTime;
+    u32 frameIndex = 0;
+
+    while (!window.shouldClose()) {
+      glfwPollEvents();
+
+      auto newTime = std::chrono::high_resolution_clock::now();
+      double deltaTime =
+          std::chrono::duration<double>(newTime - currentTime).count();
+      currentTime = newTime;
+
+      double elapsedTime =
+          std::chrono::duration<double>(currentTime - startTime).count();
+
+      vk::Extent2D extent = renderContext.getExtent();
+      FrameInfo frameInfo{frameIndex, elapsedTime, deltaTime,
+                          glm::vec2(static_cast<float>(extent.width),
+                                    static_cast<float>(extent.height)),
+                          this->application.camera};
+      this->application.onUpdate(frameInfo);
+      this->application.onRender();
+      this->application.camera.setProjection(
+          -frameInfo.currentFramebufferExtent.x / 2.f,
+          frameInfo.currentFramebufferExtent.x / 2.f,
+          -frameInfo.currentFramebufferExtent.y / 2.f,
+          frameInfo.currentFramebufferExtent.y / 2.f);
+
+      vk::CommandBuffer commandBuffer = renderContext.beginFrame();
+      if (!commandBuffer) {
+        continue;
+      }
+
+      renderContext.transitionCurrentImage(
+          commandBuffer, vk::ImageLayout::eColorAttachmentOptimal);
+
+      vk::ClearValue clearValue{};
+      clearValue.color =
+          vk::ClearColorValue{std::array<float, 4>{0.01f, 0.01f, 0.02f, 1.0f}};
+
+      vk::RenderingAttachmentInfo colorAttachment{};
+      colorAttachment.imageView = renderContext.getCurrentImageView();
+      colorAttachment.imageLayout = vk::ImageLayout::eColorAttachmentOptimal;
+      colorAttachment.loadOp = vk::AttachmentLoadOp::eClear;
+      colorAttachment.storeOp = vk::AttachmentStoreOp::eStore;
+      colorAttachment.clearValue = clearValue;
+
+      vk::RenderingInfo renderingInfo{};
+      renderingInfo.renderArea = vk::Rect2D{{0, 0}, extent};
+      renderingInfo.layerCount = 1;
+      renderingInfo.colorAttachmentCount = 1;
+      renderingInfo.pColorAttachments = &colorAttachment;
+
+      commandBuffer.beginRendering(renderingInfo);
+
+      vk::Viewport viewport{0.0f,
+                            0.0f,
+                            static_cast<float>(extent.width),
+                            static_cast<float>(extent.height),
+                            0.0f,
+                            1.0f};
+      vk::Rect2D scissor{{0, 0}, extent};
+      commandBuffer.setViewport(0, viewport);
+      commandBuffer.setScissor(0, scissor);
+
+      modelRenderSystem.render(commandBuffer, this->models, frameInfo);
+
+      commandBuffer.endRendering();
+
+      renderContext.transitionCurrentImage(commandBuffer,
+                                           vk::ImageLayout::ePresentSrcKHR);
+
+      renderContext.endFrame();
+
+      frameIndex++;
+    }
+
+    this->application.onDestroy();
+
+    device.waitIdle();
+
+    auto endTime = std::chrono::high_resolution_clock::now();
+    double totalRuntime =
+        std::chrono::duration<double>(endTime - startTime).count();
+    log::info("Application ran for", totalRuntime, "s");
+  }
+
+  void pushModel(std::vector<CanvasVertex> vertices, std::vector<u32> indices) {
+    Model::Builder builder{};
+    builder.vertices.reserve(vertices.size());
+    for (const CanvasVertex& vertex : vertices) {
+      builder.vertices.push_back({vertex.position, vertex.color});
+    }
+    builder.indices = std::move(indices);
+
+    this->models.push_back(std::make_unique<Model>(this->device, builder));
+  }
+
+  void clearModels() {
+    // Models back live GPU vertex buffers and up to MAX_FRAMES_IN_FLIGHT
+    // command buffers may still be executing against them, so wait for the
+    // device to go idle before freeing anything.
+    this->device.waitIdle();
+    this->models.clear();
+  }
+
+ private:
+  Application& application;
+  const Application::Config config;
+  Window window;
+  Device device;
+  RenderContext renderContext;
+
+  std::vector<std::unique_ptr<Model>> models;
+};
+
+void Application::setCommandLineArgs(int argc, const char* const* argv) {
+  commandLineArgs.assign(argv, argv + argc);
+}
+
 Application::Application(const Config& config)
-    : impl{std::make_unique<Impl>(config)} {}
+    : impl{std::make_unique<Impl>(*this, config)},
+      canvas{this},
+      args{std::move(commandLineArgs)} {}
 
 Application::~Application() = default;
 
 void Application::run() { impl->run(); }
 
+void Application::pushModel(std::vector<CanvasVertex> vertices,
+                            std::vector<u32> indices) {
+  impl->pushModel(std::move(vertices), std::move(indices));
+}
+
+void Application::clearModels() { impl->clearModels(); }
+
 }  // namespace sophia