Made simple render system

build/cve_renderer.d

@@ -0,0 +1,6 @@
+build/cve_renderer.o: cve_renderer.cpp cve_renderer.hpp cve_window.hpp \
+ cve_device.hpp cve_swap_chain.hpp
+cve_renderer.hpp:
+cve_window.hpp:
+cve_device.hpp:
+cve_swap_chain.hpp:

build/first_app.d

@@ -1,10 +1,12 @@
 build/first_app.o: first_app.cpp first_app.hpp cve_window.hpp \
- cve_pipeline.hpp cve_device.hpp cve_swap_chain.hpp cve_game_object.hpp \
+ cve_device.hpp cve_game_object.hpp cve_model.hpp cve_renderer.hpp \
- cve_model.hpp
+ cve_swap_chain.hpp simple_render_system.hpp cve_pipeline.hpp
 first_app.hpp:
 cve_window.hpp:
-cve_pipeline.hpp:
 cve_device.hpp:
-cve_swap_chain.hpp:
 cve_game_object.hpp:
 cve_model.hpp:
+cve_renderer.hpp:
+cve_swap_chain.hpp:
+simple_render_system.hpp:
+cve_pipeline.hpp:

build/main.d

@@ -1,9 +1,9 @@
-build/main.o: main.cpp first_app.hpp cve_window.hpp cve_pipeline.hpp \
+build/main.o: main.cpp first_app.hpp cve_window.hpp cve_device.hpp \
- cve_device.hpp cve_swap_chain.hpp cve_game_object.hpp cve_model.hpp
+ cve_game_object.hpp cve_model.hpp cve_renderer.hpp cve_swap_chain.hpp
 first_app.hpp:
 cve_window.hpp:
-cve_pipeline.hpp:
 cve_device.hpp:
-cve_swap_chain.hpp:
 cve_game_object.hpp:
 cve_model.hpp:
+cve_renderer.hpp:
+cve_swap_chain.hpp:

build/simple_render_system.d

@@ -0,0 +1,9 @@
+build/simple_render_system.o: simple_render_system.cpp \
+ simple_render_system.hpp cve_pipeline.hpp cve_device.hpp cve_window.hpp \
+ cve_game_object.hpp cve_model.hpp
+simple_render_system.hpp:
+cve_pipeline.hpp:
+cve_device.hpp:
+cve_window.hpp:
+cve_game_object.hpp:
+cve_model.hpp:

cve_renderer.cpp

@@ -0,0 +1,143 @@
+#include "cve_renderer.hpp"
+
+#include <stdexcept>
+#include <array>
+
+namespace cve {
+  CveRenderer::CveRenderer(CveWindow& window, CveDevice& device) : cveWindow{window}, cveDevice{device}{
+    recreateSwapChain();
+    createCommandBuffers();
+  }
+
+  CveRenderer::~CveRenderer() {
+    freeCommandBuffers();
+  }
+
+  void CveRenderer::recreateSwapChain() {
+    auto extent = cveWindow.getExtent();
+    while (extent.width == 0 || extent.height == 0) {
+      extent = cveWindow.getExtent();
+      glfwWaitEvents();
+    }
+
+    vkDeviceWaitIdle(cveDevice.device());
+
+    if (cveSwapChain == nullptr) {
+      cveSwapChain = std::make_unique<CveSwapChain>(cveDevice, extent);
+    } else {
+      cveSwapChain = std::make_unique<CveSwapChain>(cveDevice, extent, std::move(cveSwapChain));
+      if (cveSwapChain->imageCount() != commandBuffers.size()) {
+        freeCommandBuffers();
+        createCommandBuffers();
+      }
+    }
+
+    // Come back
+  }
+
+  void CveRenderer::createCommandBuffers() {
+    commandBuffers.resize(cveSwapChain->imageCount());
+
+    VkCommandBufferAllocateInfo allocInfo{};
+    allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+    allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+    allocInfo.commandPool = cveDevice.getCommandPool();
+    allocInfo.commandBufferCount = static_cast<uint32_t>(commandBuffers.size());
+
+    if (vkAllocateCommandBuffers(cveDevice.device(), &allocInfo, commandBuffers.data()) !=
+        VK_SUCCESS) {
+      throw std::runtime_error("Failed to allocate command buffers");
+    }
+  }
+
+  void CveRenderer::freeCommandBuffers() {
+    vkFreeCommandBuffers(cveDevice.device(), cveDevice.getCommandPool(), 
+      static_cast<uint32_t>(commandBuffers.size()), commandBuffers.data());
+    commandBuffers.clear();
+  }
+
+  VkCommandBuffer CveRenderer::beginFrame() {
+    assert(!isFrameStarted && "Can't call begin frame if frame is already in progress");
+
+    auto result = cveSwapChain->acquireNextImage(&currentImageIndex);
+
+    if (result == VK_ERROR_OUT_OF_DATE_KHR) {
+      recreateSwapChain();
+      return nullptr;
+    }
+    if (result != VK_SUCCESS && result != VK_SUBOPTIMAL_KHR) {
+      throw std::runtime_error("Failed to acquire swap chain image!");
+    }
+
+    isFrameStarted = true;
+
+    auto commandBuffer = getCurrentCommandBuffer();
+
+    VkCommandBufferBeginInfo beginInfo{};
+    beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+
+    if (vkBeginCommandBuffer(commandBuffer, &beginInfo) != VK_SUCCESS) {
+      throw std::runtime_error("Failed to begin command buffer recording");
+    }
+
+    return commandBuffer;
+  }
+  void CveRenderer::endFrame() {
+    assert(isFrameStarted && "Can't end a frame that hasn't started");
+    auto commandBuffer = getCurrentCommandBuffer();
+
+    if (vkEndCommandBuffer(commandBuffer) != VK_SUCCESS) {
+      throw std::runtime_error("Failed to record command buffer!");
+    }
+
+    auto result = cveSwapChain->submitCommandBuffers(&commandBuffer, &currentImageIndex);
+    if (result == VK_ERROR_OUT_OF_DATE_KHR || result == VK_SUBOPTIMAL_KHR || cveWindow.wasWindowResized()) {
+      cveWindow.resetWindowResizedFlag();
+      recreateSwapChain();
+    } else if (result != VK_SUCCESS) {
+      throw std::runtime_error("Failed to present swap chain image!");
+    }
+
+    isFrameStarted = false;
+  }
+
+  void CveRenderer::beginSwapChainRenderPass(VkCommandBuffer commandBuffer) {
+    assert(isFrameStarted && "Can't begin swap chain render pass if frame isn't started");
+    assert(commandBuffer == getCurrentCommandBuffer() && 
+    "Can't begin render pass on buffer from another frame.");
+
+    VkRenderPassBeginInfo renderPassInfo{};
+    renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+    renderPassInfo.renderPass = cveSwapChain->getRenderPass();
+    renderPassInfo.framebuffer = cveSwapChain->getFrameBuffer(currentImageIndex);
+
+    renderPassInfo.renderArea.offset = {0, 0};
+    renderPassInfo.renderArea.extent = cveSwapChain->getSwapChainExtent();
+
+    std::array<VkClearValue, 2> clearValues{};
+    clearValues[0].color = {0.01f, 0.01f, 0.01f, 1.0f};
+    clearValues[1].depthStencil = {1.0f, 0};
+    renderPassInfo.clearValueCount = static_cast<uint32_t>(clearValues.size());
+    renderPassInfo.pClearValues = clearValues.data();
+
+    vkCmdBeginRenderPass(commandBuffer, &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
+
+    VkViewport viewport{};
+    viewport.x = 0.0f;
+    viewport.y = 0.0f;
+    viewport.width = static_cast<float>(cveSwapChain->getSwapChainExtent().width);
+    viewport.height = static_cast<float>(cveSwapChain->getSwapChainExtent().height);
+    viewport.minDepth = 0.0f;
+    viewport.maxDepth = 1.0f;
+    VkRect2D scissor{{0, 0}, cveSwapChain->getSwapChainExtent()};
+    vkCmdSetViewport(commandBuffer, 0, 1, &viewport);
+    vkCmdSetScissor(commandBuffer, 0, 1, &scissor);
+  }
+  void CveRenderer::endSwapChainRenderPass(VkCommandBuffer commandBuffer) {
+    assert(isFrameStarted && "Can't end swap chain render pass if frame isn't started");
+    assert(commandBuffer == getCurrentCommandBuffer() && 
+    "Can't end render pass on buffer from another frame.");
+
+    vkCmdEndRenderPass(commandBuffer);
+  }
+}

cve_renderer.hpp

@@ -0,0 +1,47 @@
+#pragma once
+
+#include "cve_window.hpp"
+#include "cve_device.hpp"
+#include "cve_swap_chain.hpp"
+
+#include <cassert>
+#include <memory>
+#include <vector>
+
+namespace cve {
+  class CveRenderer {
+    public:
+
+      CveRenderer(CveWindow &window, CveDevice &device);
+      ~CveRenderer();
+
+      CveRenderer(const CveRenderer &) = delete;
+      CveRenderer &operator=(const CveRenderer &) = delete;
+
+      VkRenderPass getSwapChainRenderPass() const { return cveSwapChain->getRenderPass(); }
+      bool isFrameInProgress() const { return isFrameStarted; }
+
+      VkCommandBuffer getCurrentCommandBuffer() const {
+        assert(isFrameStarted && "Cannot get command buffer when frame is not in progress");
+        return commandBuffers[currentImageIndex];
+      }
+
+      VkCommandBuffer beginFrame();
+      void endFrame();
+      void beginSwapChainRenderPass(VkCommandBuffer commandBuffer);
+      void endSwapChainRenderPass(VkCommandBuffer commandBuffer);
+
+    private:
+      void createCommandBuffers();
+      void freeCommandBuffers();
+      void recreateSwapChain();
+
+      CveWindow& cveWindow;
+      CveDevice& cveDevice;
+      std::unique_ptr<CveSwapChain> cveSwapChain;
+      std::vector<VkCommandBuffer> commandBuffers;
+
+      uint32_t currentImageIndex;
+      bool isFrameStarted = false;
+  };
+}

first_app.cpp

@@ -1,4 +1,5 @@
 #include "first_app.hpp"
+#include "simple_render_system.hpp"
 
 #include <stdexcept>
 #include <array>
@@ -9,27 +10,23 @@
 #include <glm/gtc/constants.hpp>
 
 namespace cve {
-  struct SimplePushConstantData{
-    glm::mat2 transform{1.f}; // Identity matrix
-    glm::vec2 offset;
-    alignas(16) glm::vec3 color;
-  };
-
   FirstApp::FirstApp() {
     loadGameObjects();
-    createPipelineLayout();
-    recreateSwapChain();
-    createCommandBuffers();
   }
 
-  FirstApp::~FirstApp() {
+  FirstApp::~FirstApp() {}
-    vkDestroyPipelineLayout(cveDevice.device(), pipelineLayout, nullptr);
-  }
 
   void FirstApp::run() {
+    SimpleRenderSystem simpleRenderSystem{cveDevice, cveRenderer.getSwapChainRenderPass()};
+
     while (!cveWindow.shouldClose()) {
       glfwPollEvents();
-      drawFrame();
+      if (auto commandBuffer = cveRenderer.beginFrame()) {
+        cveRenderer.beginSwapChainRenderPass(commandBuffer);
+        simpleRenderSystem.renderGameObjects(commandBuffer, gameObjects);
+        cveRenderer.endSwapChainRenderPass(commandBuffer);
+        cveRenderer.endFrame();
+      }
     }
 
     vkDeviceWaitIdle(cveDevice.device());
@@ -53,177 +50,4 @@ namespace cve {
     
     gameObjects.push_back(std::move(triangle));
   }
-
-  void FirstApp::createPipelineLayout() {
-    VkPushConstantRange pushConstantRange{};
-    pushConstantRange.stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT;
-    pushConstantRange.offset = 0;
-    pushConstantRange.size = sizeof(SimplePushConstantData);
-    
-    VkPipelineLayoutCreateInfo pipelineLayoutInfo{};
-    pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
-    pipelineLayoutInfo.setLayoutCount = 0;
-    pipelineLayoutInfo.pSetLayouts = nullptr;
-    pipelineLayoutInfo.pushConstantRangeCount = 1;
-    pipelineLayoutInfo.pPushConstantRanges = &pushConstantRange;
-    if (vkCreatePipelineLayout(cveDevice.device(), &pipelineLayoutInfo, nullptr, &pipelineLayout) !=
-        VK_SUCCESS) {
-      throw std::runtime_error("Failed to create pipeline layout");
-    }
-  }
-
-  void FirstApp::createPipeline() {
-    assert(cveSwapChain != nullptr && "Cannot create pipeline before swap chain");
-    assert(pipelineLayout != nullptr && "Cannot create pipeline before pipeline layout");
-    
-    PipelineConfigInfo pipelineConfig{};
-    CvePipeline::defaultPipelineConfigInfo(pipelineConfig);
-    pipelineConfig.renderPass = cveSwapChain->getRenderPass();
-    pipelineConfig.pipelineLayout = pipelineLayout;
-    cvePipeline = std::make_unique<CvePipeline>(
-      cveDevice,
-      "shaders/simple_shader.vert.spv",
-      "shaders/simple_shader.frag.spv",
-      pipelineConfig
-    );
-  }
-
-  void FirstApp::recreateSwapChain() {
-    auto extent = cveWindow.getExtent();
-    while (extent.width == 0 || extent.height == 0) {
-      extent = cveWindow.getExtent();
-      glfwWaitEvents();
-    }
-
-    vkDeviceWaitIdle(cveDevice.device());
-
-    if (cveSwapChain == nullptr) {
-      cveSwapChain = std::make_unique<CveSwapChain>(cveDevice, extent);
-    } else {
-      cveSwapChain = std::make_unique<CveSwapChain>(cveDevice, extent, std::move(cveSwapChain));
-      if (cveSwapChain->imageCount() != commandBuffers.size()) {
-        freeCommandBuffers();
-        createCommandBuffers();
-      }
-    }
-
-    // Check if render pass is compatible
-    createPipeline();
-  }
-
-  void FirstApp::createCommandBuffers() {
-    commandBuffers.resize(cveSwapChain->imageCount());
-
-    VkCommandBufferAllocateInfo allocInfo{};
-    allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
-    allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
-    allocInfo.commandPool = cveDevice.getCommandPool();
-    allocInfo.commandBufferCount = static_cast<uint32_t>(commandBuffers.size());
-
-    if (vkAllocateCommandBuffers(cveDevice.device(), &allocInfo, commandBuffers.data()) !=
-        VK_SUCCESS) {
-      throw std::runtime_error("Failed to allocate command buffers");
-    }
-  }
-
-  void FirstApp::freeCommandBuffers() {
-    vkFreeCommandBuffers(cveDevice.device(), cveDevice.getCommandPool(), 
-      static_cast<uint32_t>(commandBuffers.size()), commandBuffers.data());
-    commandBuffers.clear();
-  }
-
-  void FirstApp::recordCommandBuffer(int imageIndex) {
-    
-    VkCommandBufferBeginInfo beginInfo{};
-    beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
-
-    if (vkBeginCommandBuffer(commandBuffers[imageIndex], &beginInfo) != VK_SUCCESS) {
-      throw std::runtime_error("Failed to begin command buffer recording");
-    }
-
-    VkRenderPassBeginInfo renderPassInfo{};
-    renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
-    renderPassInfo.renderPass = cveSwapChain->getRenderPass();
-    renderPassInfo.framebuffer = cveSwapChain->getFrameBuffer(imageIndex);
-
-    renderPassInfo.renderArea.offset = {0, 0};
-    renderPassInfo.renderArea.extent = cveSwapChain->getSwapChainExtent();
-
-    std::array<VkClearValue, 2> clearValues{};
-    clearValues[0].color = {0.01f, 0.01f, 0.01f, 1.0f};
-    clearValues[1].depthStencil = {1.0f, 0};
-    renderPassInfo.clearValueCount = static_cast<uint32_t>(clearValues.size());
-    renderPassInfo.pClearValues = clearValues.data();
-
-    vkCmdBeginRenderPass(commandBuffers[imageIndex], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
-
-    VkViewport viewport{};
-    viewport.x = 0.0f;
-    viewport.y = 0.0f;
-    viewport.width = static_cast<float>(cveSwapChain->getSwapChainExtent().width);
-    viewport.height = static_cast<float>(cveSwapChain->getSwapChainExtent().height);
-    viewport.minDepth = 0.0f;
-    viewport.maxDepth = 1.0f;
-    VkRect2D scissor{{0, 0}, cveSwapChain->getSwapChainExtent()};
-    vkCmdSetViewport(commandBuffers[imageIndex], 0, 1, &viewport);
-    vkCmdSetScissor(commandBuffers[imageIndex], 0, 1, &scissor);
-
-    renderGameObjects(commandBuffers[imageIndex]);
-
-    
-
-    vkCmdEndRenderPass(commandBuffers[imageIndex]);
-    if (vkEndCommandBuffer(commandBuffers[imageIndex]) != VK_SUCCESS) {
-      throw std::runtime_error("Failed to record command buffer!");
-    }
-  }
-
-  void FirstApp::renderGameObjects(VkCommandBuffer commandBuffer) {
-    cvePipeline->bind(commandBuffer);
-
-    for (auto& obj: gameObjects) {
-      obj.transform2d.rotation = glm::mod(obj.transform2d.rotation + 0.001f, glm::two_pi<float>());
-
-      SimplePushConstantData push{};
-      push.offset = obj.transform2d.translation;
-      push.color = obj.color;
-      push.transform = obj.transform2d.mat2();
-
-      vkCmdPushConstants(
-        commandBuffer, 
-        pipelineLayout, 
-        VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 
-        0, 
-        sizeof(SimplePushConstantData),
-        &push
-      );
-
-      obj.model->bind(commandBuffer);
-      obj.model->draw(commandBuffer);
-    }
-  }
-
-  void FirstApp::drawFrame() {
-    uint32_t imageIndex;
-    auto result = cveSwapChain->acquireNextImage(&imageIndex);
-
-    if (result == VK_ERROR_OUT_OF_DATE_KHR) {
-      recreateSwapChain();
-      return;
-    }
-    if (result != VK_SUCCESS && result != VK_SUBOPTIMAL_KHR) {
-      throw std::runtime_error("Failed to acquire swap chain image!");
-    }
-
-    recordCommandBuffer(imageIndex);
-    result = cveSwapChain->submitCommandBuffers(&commandBuffers[imageIndex], &imageIndex);
-    if (result == VK_ERROR_OUT_OF_DATE_KHR || result == VK_SUBOPTIMAL_KHR || cveWindow.wasWindowResized()) {
-      cveWindow.resetWindowResizedFlag();
-      recreateSwapChain();
-      return;
-    }
-    if (result != VK_SUCCESS) {
-      throw std::runtime_error("Failed to present swap chain image!");
-    }
-  }
 }

first_app.hpp

@@ -1,10 +1,9 @@
 #pragma once
 
 #include "cve_window.hpp"
-#include "cve_pipeline.hpp"
 #include "cve_device.hpp"
-#include "cve_swap_chain.hpp"
 #include "cve_game_object.hpp"
+#include "cve_renderer.hpp"
 
 #include <memory>
 #include <vector>
@@ -24,21 +23,10 @@ namespace cve {
       void run();
     private:
       void loadGameObjects();
-      void createPipelineLayout();
-      void createPipeline();
-      void createCommandBuffers();
-      void freeCommandBuffers();
-      void drawFrame();
-      void recreateSwapChain();
-      void recordCommandBuffer(int imageIndex);
-      void renderGameObjects(VkCommandBuffer commandBuffer);
 
       CveWindow cveWindow{WIDTH, HEIGHT, "Hello Vulkan!"};
       CveDevice cveDevice{cveWindow};
-      std::unique_ptr<CveSwapChain> cveSwapChain;
+      CveRenderer cveRenderer{cveWindow, cveDevice};
-      std::unique_ptr<CvePipeline> cvePipeline;
-      VkPipelineLayout pipelineLayout;
-      std::vector<VkCommandBuffer> commandBuffers;
       std::vector<CveGameObject> gameObjects;
   };
 }

simple_render_system.cpp

@@ -0,0 +1,85 @@
+#include "simple_render_system.hpp"
+
+#include <stdexcept>
+#include <array>
+
+#define GLM_FORCE_RADIANS
+#define GLM_FORCE_DEPTH_ZERO_TO_ONE
+#include <glm/glm.hpp>
+#include <glm/gtc/constants.hpp>
+
+namespace cve {
+  struct SimplePushConstantData{
+    glm::mat2 transform{1.f}; // Identity matrix
+    glm::vec2 offset;
+    alignas(16) glm::vec3 color;
+  };
+
+  SimpleRenderSystem::SimpleRenderSystem(CveDevice& device, VkRenderPass renderPass): 
+  cveDevice{device} {
+    createPipelineLayout();
+    createPipeline(renderPass);
+  }
+
+  SimpleRenderSystem::~SimpleRenderSystem() {
+    vkDestroyPipelineLayout(cveDevice.device(), pipelineLayout, nullptr);
+  }
+
+  void SimpleRenderSystem::createPipelineLayout() {
+    VkPushConstantRange pushConstantRange{};
+    pushConstantRange.stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT;
+    pushConstantRange.offset = 0;
+    pushConstantRange.size = sizeof(SimplePushConstantData);
+    
+    VkPipelineLayoutCreateInfo pipelineLayoutInfo{};
+    pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
+    pipelineLayoutInfo.setLayoutCount = 0;
+    pipelineLayoutInfo.pSetLayouts = nullptr;
+    pipelineLayoutInfo.pushConstantRangeCount = 1;
+    pipelineLayoutInfo.pPushConstantRanges = &pushConstantRange;
+    if (vkCreatePipelineLayout(cveDevice.device(), &pipelineLayoutInfo, nullptr, &pipelineLayout) !=
+        VK_SUCCESS) {
+      throw std::runtime_error("Failed to create pipeline layout");
+    }
+  }
+
+  void SimpleRenderSystem::createPipeline(VkRenderPass renderPass) {
+    assert(pipelineLayout != nullptr && "Cannot create pipeline before pipeline layout");
+    
+    PipelineConfigInfo pipelineConfig{};
+    CvePipeline::defaultPipelineConfigInfo(pipelineConfig);
+    pipelineConfig.renderPass = renderPass;
+    pipelineConfig.pipelineLayout = pipelineLayout;
+    cvePipeline = std::make_unique<CvePipeline>(
+      cveDevice,
+      "shaders/simple_shader.vert.spv",
+      "shaders/simple_shader.frag.spv",
+      pipelineConfig
+    );
+  }
+
+  void SimpleRenderSystem::renderGameObjects(VkCommandBuffer commandBuffer, std::vector<CveGameObject> &gameObjects) {
+    cvePipeline->bind(commandBuffer);
+
+    for (auto& obj: gameObjects) {
+      obj.transform2d.rotation = glm::mod(obj.transform2d.rotation + 0.001f, glm::two_pi<float>());
+
+      SimplePushConstantData push{}; 
+      push.offset = obj.transform2d.translation;
+      push.color = obj.color;
+      push.transform = obj.transform2d.mat2();
+
+      vkCmdPushConstants(
+        commandBuffer, 
+        pipelineLayout, 
+        VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 
+        0, 
+        sizeof(SimplePushConstantData),
+        &push
+      );
+
+      obj.model->bind(commandBuffer);
+      obj.model->draw(commandBuffer);
+    }
+  }
+}

simple_render_system.hpp

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "cve_pipeline.hpp"
+#include "cve_device.hpp"
+#include "cve_game_object.hpp"
+
+#include <memory>
+#include <vector>
+
+namespace cve {
+  class SimpleRenderSystem {
+    public:
+
+      SimpleRenderSystem(CveDevice &device, VkRenderPass renderPass);
+      ~SimpleRenderSystem();
+
+      SimpleRenderSystem(const SimpleRenderSystem &) = delete;
+      SimpleRenderSystem &operator=(const SimpleRenderSystem &) = delete;
+      void renderGameObjects(VkCommandBuffer commandBuffer, std::vector<CveGameObject>& gameObjects);
+
+    private:
+      void createPipelineLayout();
+      void createPipeline(VkRenderPass renderPass);
+
+      CveDevice& cveDevice;
+      std::unique_ptr<CvePipeline> cvePipeline;
+      VkPipelineLayout pipelineLayout;
+  };
+}