화면크기변경 로직 추가

CMakeLists.txt

@@ -38,6 +38,14 @@ FetchContent_Declare(
 )
 FetchContent_MakeAvailable(GSL)
 
+FetchContent_Declare(
+    ASSIMP
+    GIT_REPOSITORY "https://github.com/assimp/assimp.git"
+    GIT_TAG "v5.4.3"
+    GIT_SHALLOW ON
+)
+FetchContent_MakeAvailable(ASSIMP)
+
 file(GLOB_RECURSE VulkanEngineSources CONFIGURE_DEPENDS
     "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp"
     "${CMAKE_CURRENT_SOURCE_DIR}/src/glfw/*.cpp"
@@ -50,6 +58,7 @@ target_link_libraries(VulkanEngine PRIVATE glm)
 target_link_libraries(VulkanEngine PRIVATE glfw)
 target_link_libraries(VulkanEngine PRIVATE Microsoft.GSL::GSL)
 target_link_libraries(VulkanEngine PRIVATE spdlog)
+target_link_libraries(VulkanEngine PRIVATE assimp::assimp)
 
 target_include_directories(VulkanEngine PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/include")
 target_compile_features(VulkanEngine PRIVATE cxx_std_20)
@@ -62,4 +71,7 @@ file(GLOB_RECURSE ShaderSources CONFIGURE_DEPENDS
 )
 
 add_shaders(VulkanEngineShaders ${ShaderSources})
-add_dependencies(VulkanEngine VulkanEngineShaders)
+add_dependencies(VulkanEngine VulkanEngineShaders)
+
+file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/assets/paving-stones.jpg" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/assets")
+file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/assets/player.fbx" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/assets")

CMakeSettings.json

@@ -0,0 +1,15 @@
+{
+  "configurations": [
+    {
+      "name": "x64-Debug",
+      "generator": "Ninja",
+      "configurationType": "Debug",
+      "inheritEnvironments": [ "msvc_x64_x64" ],
+      "buildRoot": "${projectDir}\\out\\build\\${name}",
+      "installRoot": "${projectDir}\\out\\install\\${name}",
+      "cmakeCommandArgs": "",
+      "buildCommandArgs": "",
+      "ctestCommandArgs": ""
+    }
+  ]
+}

include/precomp.h

@@ -12,3 +12,5 @@
 
 #include "spdlog/spdlog.h"
 #include "utilities.h"
+
+#define MAX_BUFFERED_FRAMES (2)

include/vulkan/buffer_handle.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <vulkan/vulkan.h>
+
+namespace veng {
+
+struct BufferHandle {
+  VkBuffer buffer = VK_NULL_HANDLE;
+  VkDeviceMemory memory = VK_NULL_HANDLE;
+};
+
+}  // namespace veng

include/vulkan/graphics.h

@@ -1,15 +1,46 @@
 #pragma once
 #include <vulkan/vulkan.h>
 
+#include "buffer_handle.h"
 #include "glfw/glfw_window.h"
 #include "precomp.h"
+#include "texture_handle.h"
+#include "vertex.h"
 
 namespace veng {
+
+struct Frame {
+  VkSemaphore image_available_signal = VK_NULL_HANDLE;
+  VkSemaphore render_finished_signal = VK_NULL_HANDLE;
+  VkFence still_rendering_fence = VK_NULL_HANDLE;
+
+  VkCommandBuffer command_buffer = VK_NULL_HANDLE;
+
+  VkDescriptorSet uniform_set = VK_NULL_HANDLE;
+  BufferHandle uniform_buffer;
+  void* uniform_buffer_location;
+};
+
 class Graphics final {
  public:
-  Graphics(gsl::not_null<Window *> window);
+  Graphics(gsl::not_null<Window*> window);
   ~Graphics();
 
+  bool BeginFrame();
+  void SetModelMatrix(glm::mat4 model);
+  void SetViewProjection(glm::mat4 view, glm::mat4 projection);
+  void SetTexture(TextureHandle handle);
+  void RenderBuffer(BufferHandle handle, std::uint32_t vertex_count);
+  void RenderIndexedBuffer(BufferHandle vertex_buffer,
+                           BufferHandle index_buffer, std::uint32_t count);
+  void EndFrame();
+
+  BufferHandle CreateVertexBuffer(gsl::span<Vertex> vertices);
+  BufferHandle CreateIndexBuffer(gsl::span<std::uint32_t> indices);
+  void DestroyBuffer(BufferHandle handle);
+  TextureHandle CreateTexture(gsl::czstring path);
+  void DestroyTexture(TextureHandle handle);
+
  private:
   struct QueueFamilyIndices {
     std::optional<std::uint32_t> graphics_family = std::nullopt;
@@ -21,13 +52,15 @@ class Graphics final {
   };
 
   struct SwapChainProperties {
-    VkSurfaceCapabilitiesKHR capabilities;
+    VkSurfaceCapabilitiesKHR capabilities = {};
     std::vector<VkSurfaceFormatKHR> formats;
     std::vector<VkPresentModeKHR> present_modes;
 
     bool IsValid() const { return !formats.empty() && !present_modes.empty(); }
   };
 
+  // 초기화
+
   void InitializeVulkan();
   void CreateInstance();
   void SetupDebugMessenger();
@@ -36,7 +69,25 @@ class Graphics final {
   void CreateSurface();
   void CreateSwapChain();
   void CreateImageViews();
+  void CreateRenderPass();
   void CreateGraphicsPipeline();
+  void CreateFramebuffers();
+  void CreateCommandPool();
+  void CreateCommandBuffer();
+  void CreateSignals();
+  void CreateDescriptorSetLayouts();
+  void CreateDescriptorPools();
+  void CreateDescriptorSets();
+  void CreateTextureSampler();
+  void CreateDepthResources();
+
+  void RecreateSwapChain();
+  void CleanupSwapChain();
+
+  // 랜더링
+
+  void BeginCommands();
+  void EndCommands();
 
   std::vector<gsl::czstring> GetRequiredInstanceExtentions();
 
@@ -60,10 +111,32 @@ class Graphics final {
   VkPresentModeKHR ChooseSwapPresentMode(
       gsl::span<VkPresentModeKHR> present_modes);
   VkExtent2D ChooseSwapExtent(const VkSurfaceCapabilitiesKHR& capabilities);
-  std::uint32_t ChooseSwapImageCount(const VkSurfaceCapabilitiesKHR& capabilities);
+  std::uint32_t ChooseSwapImageCount(
+      const VkSurfaceCapabilitiesKHR& capabilities);
 
   VkShaderModule CreateShaderModule(gsl::span<std::uint8_t> buffer);
 
+  std::uint32_t FindMemoryType(std::uint32_t type_bits_filter,
+                               VkMemoryPropertyFlags required_properties);
+
+  BufferHandle CreateBuffer(VkDeviceSize size, VkBufferUsageFlags usage,
+                            VkMemoryPropertyFlags properties);
+  VkCommandBuffer BeginTransientCommandBuffer();
+  void EndTransientCommandBuffer(VkCommandBuffer command_buffer);
+  void CreateUniformBuffers();
+
+  TextureHandle CreateImage(glm::ivec2 size, VkFormat image_format,
+                            VkBufferUsageFlags usage,
+                            VkMemoryPropertyFlags properties);
+  void TransitionImageLayout(VkImage image, VkImageLayout old_layout,
+                             VkImageLayout new_layout);
+  void CopyBufferToImage(VkBuffer buffer, VkImage image, glm::ivec2 image_size);
+  VkImageView CreateImageView(VkImage image, VkFormat format,
+                              VkImageAspectFlags aspect_flag);
+
+  VkViewport GetViewport();
+  VkRect2D GetScissor();
+
   std::array<gsl::czstring, 1> required_device_extentions_ = {
       VK_KHR_SWAPCHAIN_EXTENSION_NAME};
 
@@ -80,10 +153,33 @@ class Graphics final {
   VkSurfaceFormatKHR surface_format_;
   VkPresentModeKHR present_mode_;
   VkExtent2D extent_;
+
   std::vector<VkImage> swap_chain_images_;
   std::vector<VkImageView> swap_chain_image_views_;
+  std::vector<VkFramebuffer> swap_chain_framebuffers_;
 
-  gsl::not_null<Window *> window_;
+  VkPipelineLayout pipeline_layout_ = VK_NULL_HANDLE;
+  VkRenderPass render_pass_ = VK_NULL_HANDLE;
+  VkPipeline pipeline_ = VK_NULL_HANDLE;
+  VkDescriptorSetLayout descriptor_set_layout_ = VK_NULL_HANDLE;
+
+  VkCommandPool command_pool_ = VK_NULL_HANDLE;
+
+  std::uint32_t current_image_index_ = 0;
+
+  VkDescriptorSetLayout uniform_set_layout_ = VK_NULL_HANDLE;
+  VkDescriptorPool uniform_pool_ = VK_NULL_HANDLE;
+  
+
+  VkDescriptorSetLayout texture_set_layout_ = VK_NULL_HANDLE;
+  VkDescriptorPool texture_pool_ = VK_NULL_HANDLE;
+  VkSampler texture_sampler_ = VK_NULL_HANDLE;
+  TextureHandle depth_texture_;
+
+  std::array<Frame, MAX_BUFFERED_FRAMES> frames_;
+  std::int32_t current_frame_ = 0;
+
+  gsl::not_null<Window*> window_;
   bool validation_enabled_ = false;
 };
 

include/vulkan/texture_handle.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <vulkan/vulkan.h>
+
+namespace veng {
+
+struct TextureHandle {
+  VkImage image = VK_NULL_HANDLE;
+  VkImageView image_view = VK_NULL_HANDLE;
+  VkDeviceMemory memory = VK_NULL_HANDLE;
+  VkDescriptorSet set = VK_NULL_HANDLE;
+};
+
+}  // namespace veng

include/vulkan/uniform_transformations.h

@@ -0,0 +1,8 @@
+#pragma once
+
+namespace veng {
+struct UniformTransformations {
+  glm::mat4 view;
+  glm::mat4 projection;
+};
+}  // namespace veng

include/vulkan/vertex.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <vulkan/vulkan.h>
+
+namespace veng {
+struct Vertex {
+  Vertex() : position(glm::vec3(0.f)), uv(glm::vec2(0.f)) {}
+  Vertex(glm::vec3 _position, glm::vec2 _uv) : position(_position), uv(_uv) {}
+
+  glm::vec3 position;
+  glm::vec2 uv;
+
+  static VkVertexInputBindingDescription GetBindingDescription() {
+    VkVertexInputBindingDescription description = {};
+    description.binding = 0;
+    description.stride = sizeof(Vertex);
+    description.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
+
+    return description;
+  }
+
+  static std::array<VkVertexInputAttributeDescription, 2> GetAttributeDescriptions() {
+    std::array<VkVertexInputAttributeDescription, 2> descriptions = {};
+
+    descriptions[0].binding = 0;
+    descriptions[0].location = 0;
+    descriptions[0].format = VK_FORMAT_R32G32B32_SFLOAT;
+    descriptions[0].offset = offsetof(Vertex, position);
+
+    descriptions[1].binding = 0;
+    descriptions[1].location = 1;
+    descriptions[1].format = VK_FORMAT_R32G32_SFLOAT;
+    descriptions[1].offset = offsetof(Vertex, uv);
+
+    return descriptions;
+  }
+};
+}  // namespace veng

shaders/basic.frag

@@ -1,8 +1,11 @@
 #version 450
 #include "common.glsl"
 
+layout(location = 0) in vec2 vertex_uv;
 layout(location = 0) out vec4 out_color;
 
+layout(set = 1, binding = 0) uniform sampler2D texture_sampler;
+
 void main() {
-	out_color = vec4(1.0, 0.0, 0.5, 1.0);
+	out_color = texture(texture_sampler, vertex_uv);
 }

shaders/basic.vert

@@ -1,13 +1,16 @@
 #version 450
 #include "common.glsl"
 
-vec2 hardcoded_positions[3] = vec2[](
-    vec2(0.0, -0.5),
-    vec2(0.5, 0.5),
-    vec2(-0.5, 0.5)
-);
+layout(location = 0) in vec3 input_position;
+layout(location = 1) in vec2 input_uv;
+
+layout(location = 0) out vec2 vertex_uv;
+
+layout(push_constant) uniform Model {
+    mat4 transformation;
+} model;
 
 void main() {
-    vec2 current_Position = hardcoded_positions[gl_VertexIndex];
-    gl_Position = vec4(current_Position, 0.0, 1.0);
+    gl_Position = camera.projection * camera.view * model.transformation * vec4(input_position, 1.0);
+    vertex_uv = input_uv;
 }

shaders/common.glsl

@@ -1 +1,7 @@
-#extension GL_KHR_vulkan_glsl : enable
+#extension GL_KHR_vulkan_glsl : enable
+
+layout(set = 0, binding = 0) uniform UniformTransformations {
+  mat4 view;
+  mat4 projection;
+}
+camera;

src/glfw/glfw_window.cpp

@@ -7,7 +7,7 @@
 namespace veng {
 
 Window::Window(gsl::czstring name, glm::ivec2 size) {
-  glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
+  // glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
   glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
 
   window_ = glfwCreateWindow(size.x, size.y, name, nullptr, nullptr);

src/main.cpp

@@ -1,8 +1,14 @@
 #include <GLFW/glfw3.h>
 
+#include <glm/gtc/matrix_transform.hpp>
+#include <iostream>
+
+#include "assimp/Importer.hpp"
+#include "assimp/postprocess.h"
 #include "glfw/glfw_initialization.h"
 #include "glfw/glfw_monitor.h"
 #include "glfw/glfw_window.h"
+#include "precomp.h"
 #include "vulkan/graphics.h"
 
 std::int32_t main(std::int32_t argc, gsl::zstring* argv) {
@@ -13,9 +19,79 @@ std::int32_t main(std::int32_t argc, gsl::zstring* argv) {
 
   veng::Graphics graphics(&window);
 
+  Assimp::Importer assetImporter;
+
+  const struct aiScene* scene = assetImporter.ReadFile(
+      "assets/player.fbx", aiProcess_CalcTangentSpace | aiProcess_Triangulate |
+              aiProcess_JoinIdenticalVertices | aiProcess_SortByPType);
+
+  if (nullptr == scene) {
+    spdlog::error(assetImporter.GetErrorString());
+    return false;
+  }
+
+  std::array<veng::Vertex, 4> vertices = {
+      veng::Vertex{{-.5f, -.5f, 0.f}, {0.f, 1.f}},
+      veng::Vertex{{.5f, -.5f, 0.f}, {1.f, 1.f}},
+      veng::Vertex{{-.5f, .5f, 0.f}, {0.f, 0.f}},
+      veng::Vertex{{.5f, .5f, 0.f}, {1.f, 0.f}}};
+  veng::BufferHandle buffer = graphics.CreateVertexBuffer(vertices);
+
+  std::array<std::uint32_t, 6> indices = {0, 3, 2, 0, 1, 3};
+  veng::BufferHandle index_buffer = graphics.CreateIndexBuffer(indices);
+
+  glm::mat4 rotation = glm::rotate(glm::mat4(1.0f), glm::radians(45.f),
+                                   glm::vec3(0.f, 1.f, 0.f));
+
+  glm::mat4 rotation2 =
+      glm::rotate(glm::mat4(1.0f), glm::radians(0.f), glm::vec3(0.f, 0.f, 1.f));
+
+  glm::mat4 view = glm::translate(glm::mat4(1.f), glm::vec3(0.f, 0.f, -2.f));
+  glm::mat4 projection =
+      glm::perspective(glm::radians(150.f), 800.f / 600.f, 0.1f, 100.f);
+  graphics.SetViewProjection(view, projection);
+
+  veng::TextureHandle texture =
+      graphics.CreateTexture("assets/paving-stones.jpg");
+
+  double last_time = glfwGetTime();
+
+  glm::ivec2 window_size;
   while (!window.ShouldClose()) {
     glfwPollEvents();
+
+    glm::ivec2 current_window_size = window.GetFramebufferSize();
+    if (current_window_size != window_size && current_window_size.x != 0 && current_window_size.y != 0) {
+      window_size = current_window_size;
+      projection = glm::perspective(
+          glm::radians(90.f),
+          (float)current_window_size.x / (float)current_window_size.y, 0.1f,
+          100.f);
+      graphics.SetViewProjection(view, projection);
+    }
+
+    if (graphics.BeginFrame()) {
+      double current_time = glfwGetTime();
+      float delta_time = static_cast<float>(current_time - last_time);
+      last_time = current_time;
+
+      graphics.SetTexture(texture);
+      rotation2 = glm::rotate(rotation2, delta_time * glm::radians(-360.f),
+                              glm::vec3(0.f, 0.f, 1.f));
+      graphics.SetModelMatrix(rotation2);
+      graphics.RenderIndexedBuffer(buffer, index_buffer, indices.size());
+      rotation = glm::rotate(rotation, delta_time * glm::radians(360.f),
+                             glm::vec3(0.f, 0.f, 1.f));
+      graphics.SetModelMatrix(rotation);
+      graphics.RenderIndexedBuffer(buffer, index_buffer, indices.size());
+
+      graphics.EndFrame();
+    }
   }
 
+  graphics.DestroyTexture(texture);
+  graphics.DestroyBuffer(buffer);
+  graphics.DestroyBuffer(index_buffer);
+
   return EXIT_SUCCESS;
 }

src/stb/stb_image.cpp

@@ -0,0 +1,2 @@
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb/stb_image.h"

src/vulkan/buffers.cpp

@@ -0,0 +1,324 @@
+#include <vulkan/vulkan.h>
+
+#include "precomp.h"
+#include "vulkan/graphics.h"
+#include "vulkan/uniform_transformations.h"
+
+namespace veng {
+
+std::uint32_t Graphics::FindMemoryType(
+    std::uint32_t type_bits_filter, VkMemoryPropertyFlags required_properties) {
+  VkPhysicalDeviceMemoryProperties memory_properties;
+  vkGetPhysicalDeviceMemoryProperties(physical_device_, &memory_properties);
+  gsl::span<VkMemoryType> memory_types(memory_properties.memoryTypes,
+                                       memory_properties.memoryTypeCount);
+
+  for (std::uint32_t i = 0; i < memory_types.size(); i++) {
+    bool passes_filter = type_bits_filter & (1 << i);
+    bool has_property_flags =
+        memory_types[i].propertyFlags & required_properties;
+
+    if (passes_filter && has_property_flags) return i;
+  }
+
+  throw std::runtime_error("Cannot find memory type!");
+}
+
+BufferHandle Graphics::CreateBuffer(VkDeviceSize size, VkBufferUsageFlags usage,
+                                    VkMemoryPropertyFlags properties) {
+  BufferHandle handle = {};
+
+  VkBufferCreateInfo buffer_info = {};
+  buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+  buffer_info.size = size;
+  buffer_info.usage = usage;
+  buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+
+  VkResult result =
+      vkCreateBuffer(logical_device_, &buffer_info, nullptr, &handle.buffer);
+  if (result != VK_SUCCESS)
+    throw std::runtime_error("Failed to create vertex buffer!");
+
+  VkMemoryRequirements memory_requirements;
+  vkGetBufferMemoryRequirements(logical_device_, handle.buffer,
+                                &memory_requirements);
+
+  std::uint32_t chosen_memory_type =
+      FindMemoryType(memory_requirements.memoryTypeBits, properties);
+
+  VkMemoryAllocateInfo allocation_info = {};
+  allocation_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
+  allocation_info.allocationSize = memory_requirements.size;
+  allocation_info.memoryTypeIndex = chosen_memory_type;
+
+  VkResult allocation_result = vkAllocateMemory(
+      logical_device_, &allocation_info, nullptr, &handle.memory);
+  if (allocation_result != VK_SUCCESS)
+    throw std::runtime_error("Failed to allocate buffer memory!");
+
+  vkBindBufferMemory(logical_device_, handle.buffer, handle.memory, 0);
+
+  return handle;
+}
+
+BufferHandle Graphics::CreateVertexBuffer(gsl::span<Vertex> vertices) {
+  VkDeviceSize size = sizeof(Vertex) * vertices.size();
+  BufferHandle staging_handle = CreateBuffer(
+      size,
+      VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
+      VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
+          VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
+
+  void* data;
+  vkMapMemory(logical_device_, staging_handle.memory, 0, size, 0, &data);
+  std::memcpy(data, vertices.data(), size);
+  vkUnmapMemory(logical_device_, staging_handle.memory);
+
+  BufferHandle gpu_handle = CreateBuffer(
+      size,
+      VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
+      VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
+
+  VkCommandBuffer transient_commands = BeginTransientCommandBuffer();
+
+  VkBufferCopy copy_info = {};
+  copy_info.srcOffset = 0;
+  copy_info.dstOffset = 0;
+  copy_info.size = size;
+  vkCmdCopyBuffer(transient_commands, staging_handle.buffer, gpu_handle.buffer,
+                  1, &copy_info);
+
+  EndTransientCommandBuffer(transient_commands);
+
+  DestroyBuffer(staging_handle);
+
+  return gpu_handle;
+}
+
+BufferHandle Graphics::CreateIndexBuffer(gsl::span<std::uint32_t> indices) {
+  VkDeviceSize size = sizeof(std::uint32_t) * indices.size();
+  BufferHandle staging_handle =
+      CreateBuffer(size, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
+                   VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
+                       VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
+
+  void* data;
+  vkMapMemory(logical_device_, staging_handle.memory, 0, size, 0, &data);
+  std::memcpy(data, indices.data(), size);
+  vkUnmapMemory(logical_device_, staging_handle.memory);
+
+  BufferHandle gpu_handle = CreateBuffer(
+      size, VK_BUFFER_USAGE_INDEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
+      VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
+
+  VkCommandBuffer transient_commands = BeginTransientCommandBuffer();
+
+  VkBufferCopy copy_info = {};
+  copy_info.srcOffset = 0;
+  copy_info.dstOffset = 0;
+  copy_info.size = size;
+  vkCmdCopyBuffer(transient_commands, staging_handle.buffer, gpu_handle.buffer,
+                  1, &copy_info);
+
+  EndTransientCommandBuffer(transient_commands);
+
+  DestroyBuffer(staging_handle);
+
+  return gpu_handle;
+}
+
+void Graphics::DestroyBuffer(BufferHandle handle) {
+  vkDeviceWaitIdle(logical_device_);
+  vkDestroyBuffer(logical_device_, handle.buffer, nullptr);
+  vkFreeMemory(logical_device_, handle.memory, nullptr);
+}
+
+void Graphics::SetModelMatrix(glm::mat4 model) {
+  // for (Frame& frame : frames_)
+  vkCmdPushConstants(frames_[current_frame_].command_buffer, pipeline_layout_,
+                     VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(glm::mat4), &model);
+}
+
+void Graphics::SetViewProjection(glm::mat4 view, glm::mat4 projection) {
+  UniformTransformations transformations{view, projection};
+  for (Frame& frame : frames_)
+    std::memcpy(frame.uniform_buffer_location,
+                &transformations, sizeof(UniformTransformations));
+}
+
+void Graphics::RenderBuffer(BufferHandle handle, std::uint32_t vertex_count) {
+  VkDeviceSize offset = 0;
+  vkCmdBindDescriptorSets(frames_[current_frame_].command_buffer,
+                          VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout_, 0,
+                          1, &frames_[current_frame_].uniform_set, 0, nullptr);
+  vkCmdBindVertexBuffers(frames_[current_frame_].command_buffer, 0, 1,
+                         &handle.buffer, &offset);
+  vkCmdDraw(frames_[current_frame_].command_buffer, vertex_count, 1, 0, 0);
+}
+
+void Graphics::RenderIndexedBuffer(BufferHandle vertex_buffer,
+                                   BufferHandle index_buffer,
+                                   std::uint32_t count) {
+  VkDeviceSize offset = 0;
+  vkCmdBindDescriptorSets(frames_[current_frame_].command_buffer,
+                          VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout_, 0,
+                          1, &frames_[current_frame_].uniform_set, 0, nullptr);
+  vkCmdBindVertexBuffers(frames_[current_frame_].command_buffer, 0, 1,
+                         &vertex_buffer.buffer, &offset);
+  vkCmdBindIndexBuffer(frames_[current_frame_].command_buffer,
+                       index_buffer.buffer, 0, VK_INDEX_TYPE_UINT32);
+  vkCmdDrawIndexed(frames_[current_frame_].command_buffer, count, 1, 0, 0, 0);
+  SetModelMatrix(glm::mat4(1.f));
+}
+
+VkCommandBuffer Graphics::BeginTransientCommandBuffer() {
+  VkCommandBufferAllocateInfo allocation_info = {};
+  allocation_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+  allocation_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+  allocation_info.commandPool = command_pool_;
+  allocation_info.commandBufferCount = 1;
+
+  VkCommandBuffer buffer;
+  vkAllocateCommandBuffers(logical_device_, &allocation_info, &buffer);
+
+  VkCommandBufferBeginInfo begin_info = {};
+  begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+  begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+  vkBeginCommandBuffer(buffer, &begin_info);
+
+  return buffer;
+}
+
+void Graphics::EndTransientCommandBuffer(VkCommandBuffer command_buffer) {
+  vkEndCommandBuffer(command_buffer);
+
+  VkSubmitInfo submit_info = {};
+  submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+  submit_info.commandBufferCount = 1;
+  submit_info.pCommandBuffers = &command_buffer;
+
+  vkQueueSubmit(graphics_queue_, 1, &submit_info, VK_NULL_HANDLE);
+  vkQueueWaitIdle(graphics_queue_);
+  vkFreeCommandBuffers(logical_device_, command_pool_, 1, &command_buffer);
+}
+
+void Graphics::CreateUniformBuffers() {
+  VkDeviceSize buffer_size = sizeof(UniformTransformations);
+  for (Frame& frame : frames_) {
+    frame.uniform_buffer =
+        CreateBuffer(buffer_size, VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
+                     VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
+                         VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
+
+    vkMapMemory(logical_device_, frame.uniform_buffer.memory, 0, buffer_size, 0,
+                &frame.uniform_buffer_location);
+  }
+}
+
+void Graphics::CreateDescriptorSetLayouts() {
+  VkDescriptorSetLayoutBinding uniform_layout_binding = {};
+  uniform_layout_binding.binding = 0;
+  uniform_layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
+  uniform_layout_binding.descriptorCount = 1;
+  uniform_layout_binding.stageFlags = VK_SHADER_STAGE_ALL_GRAPHICS;
+
+  VkDescriptorSetLayoutCreateInfo uniform_layout_info = {};
+  uniform_layout_info.sType =
+      VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
+  uniform_layout_info.bindingCount = 1;
+  uniform_layout_info.pBindings = &uniform_layout_binding;
+
+  if (vkCreateDescriptorSetLayout(logical_device_, &uniform_layout_info,
+                                  nullptr,
+                                  &uniform_set_layout_) != VK_SUCCESS) {
+    std::exit(EXIT_FAILURE);
+  }
+
+  VkDescriptorSetLayoutBinding texture_layout_binding = {};
+  texture_layout_binding.binding = 0;
+  texture_layout_binding.descriptorType =
+      VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
+  texture_layout_binding.descriptorCount = 1;
+  texture_layout_binding.stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
+
+  VkDescriptorSetLayoutCreateInfo texture_layout_info = {};
+  texture_layout_info.sType =
+      VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
+  texture_layout_info.bindingCount = 1;
+  texture_layout_info.pBindings = &texture_layout_binding;
+
+  if (vkCreateDescriptorSetLayout(logical_device_, &texture_layout_info,
+                                  nullptr,
+                                  &texture_set_layout_) != VK_SUCCESS) {
+    std::exit(EXIT_FAILURE);
+  }
+}
+
+void Graphics::CreateDescriptorPools() {
+  VkDescriptorPoolSize uniform_pool_size = {};
+  uniform_pool_size.type = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
+  uniform_pool_size.descriptorCount = MAX_BUFFERED_FRAMES;
+
+  VkDescriptorPoolCreateInfo uniform_create_info = {};
+  uniform_create_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+  uniform_create_info.poolSizeCount = 1;
+  uniform_create_info.pPoolSizes = &uniform_pool_size;
+  uniform_create_info.maxSets = MAX_BUFFERED_FRAMES;
+
+  if (vkCreateDescriptorPool(logical_device_, &uniform_create_info, nullptr,
+                             &uniform_pool_) != VK_SUCCESS) {
+    std::exit(EXIT_FAILURE);
+  }
+
+  VkPhysicalDeviceProperties properties = {};
+  vkGetPhysicalDeviceProperties(physical_device_, &properties);
+
+  VkDescriptorPoolSize texture_pool_size = {};
+  texture_pool_size.type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
+  texture_pool_size.descriptorCount =
+      properties.limits.maxSamplerAllocationCount;
+
+  VkDescriptorPoolCreateInfo texture_create_info = {};
+  texture_create_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+  texture_create_info.poolSizeCount = 1;
+  texture_create_info.pPoolSizes = &texture_pool_size;
+  texture_create_info.maxSets = properties.limits.maxSamplerAllocationCount;
+  texture_create_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
+
+  if (vkCreateDescriptorPool(logical_device_, &texture_create_info, nullptr,
+                             &texture_pool_) != VK_SUCCESS) {
+    std::exit(EXIT_FAILURE);
+  }
+}
+
+void Graphics::CreateDescriptorSets() {
+  for (Frame& frame : frames_) {
+    VkDescriptorSetAllocateInfo set_info = {};
+    set_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
+    set_info.descriptorPool = uniform_pool_;
+    set_info.descriptorSetCount = 1;
+    set_info.pSetLayouts = &uniform_set_layout_;
+
+    VkResult result = vkAllocateDescriptorSets(logical_device_, &set_info,
+                                               &frame.uniform_set);
+    if (result != VK_SUCCESS) std::exit(EXIT_FAILURE);
+
+    VkDescriptorBufferInfo buffer_info = {};
+    buffer_info.buffer = frame.uniform_buffer.buffer;
+    buffer_info.offset = 0;
+    buffer_info.range = sizeof(UniformTransformations);
+
+    VkWriteDescriptorSet descriptor_write = {};
+    descriptor_write.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
+    descriptor_write.dstSet = frame.uniform_set;
+    descriptor_write.dstBinding = 0;
+    descriptor_write.dstArrayElement = 0;
+    descriptor_write.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
+    descriptor_write.descriptorCount = 1;
+    descriptor_write.pBufferInfo = &buffer_info;
+
+    vkUpdateDescriptorSets(logical_device_, 1, &descriptor_write, 0, nullptr);
+  }
+}
+
+}  // namespace veng

src/vulkan/class.cpp

@@ -0,0 +1,102 @@
+#include <GLFW/glfw3.h>
+
+#include "precomp.h"
+#include "vulkan/graphics.h"
+
+namespace veng {
+
+Graphics::Graphics(gsl::not_null<Window*> window) : window_(window) {
+#if !defined(NDEBUG)
+  validation_enabled_ = true;
+#endif
+  InitializeVulkan();
+}
+
+Graphics::~Graphics() {
+  if (logical_device_ != VK_NULL_HANDLE) {
+    vkDeviceWaitIdle(logical_device_);
+    CleanupSwapChain();
+    DestroyTexture(depth_texture_);
+
+    if (texture_pool_ != VK_NULL_HANDLE)
+      vkDestroyDescriptorPool(logical_device_, texture_pool_, nullptr);
+
+    if (texture_set_layout_ != VK_NULL_HANDLE)
+      vkDestroyDescriptorSetLayout(logical_device_, texture_set_layout_,
+                                   nullptr);
+
+    if (texture_sampler_ != VK_NULL_HANDLE)
+      vkDestroySampler(logical_device_, texture_sampler_, nullptr);
+
+    if (uniform_pool_ != VK_NULL_HANDLE)
+      vkDestroyDescriptorPool(logical_device_, uniform_pool_, nullptr);
+
+    for (Frame& frame : frames_) {
+      DestroyBuffer(frame.uniform_buffer);
+
+      if (frame.image_available_signal != VK_NULL_HANDLE)
+        vkDestroySemaphore(logical_device_, frame.image_available_signal,
+                           nullptr);
+
+      if (frame.render_finished_signal != VK_NULL_HANDLE)
+        vkDestroySemaphore(logical_device_, frame.render_finished_signal,
+                           nullptr);
+
+      if (frame.still_rendering_fence != VK_NULL_HANDLE)
+        vkDestroyFence(logical_device_, frame.still_rendering_fence, nullptr);
+    }
+
+    if (uniform_set_layout_ != VK_NULL_HANDLE)
+      vkDestroyDescriptorSetLayout(logical_device_, uniform_set_layout_,
+                                   nullptr);
+
+    if (command_pool_ != VK_NULL_HANDLE)
+      vkDestroyCommandPool(logical_device_, command_pool_, nullptr);
+
+    if (logical_device_ != VK_NULL_HANDLE)
+      vkDestroyPipeline(logical_device_, pipeline_, nullptr);
+
+    if (pipeline_layout_ != VK_NULL_HANDLE)
+      vkDestroyPipelineLayout(logical_device_, pipeline_layout_, nullptr);
+
+    if (render_pass_ != VK_NULL_HANDLE)
+      vkDestroyRenderPass(logical_device_, render_pass_, nullptr);
+
+    vkDestroyDevice(logical_device_, nullptr);
+  }
+  if (instance_ != VK_NULL_HANDLE) {
+    if (surface_ != VK_NULL_HANDLE)
+      vkDestroySurfaceKHR(instance_, surface_, nullptr);
+
+    if (debug_messenger_ != VK_NULL_HANDLE)
+      vkDestroyDebugUtilsMessengerEXT(instance_, debug_messenger_, nullptr);
+
+    vkDestroyInstance(instance_, nullptr);
+  }
+}
+
+void Graphics::InitializeVulkan() {
+  CreateInstance();
+  SetupDebugMessenger();
+  CreateSurface();
+  PickPhysicalDevice();
+  CreateLogicalDeviceAndQueues();
+  CreateSwapChain();
+  CreateImageViews();
+  CreateRenderPass();
+  CreateDescriptorSetLayouts();
+  CreateGraphicsPipeline();
+  CreateDepthResources();
+  CreateFramebuffers();
+  CreateCommandPool();
+  CreateCommandBuffer();
+  CreateSignals();
+  CreateUniformBuffers();
+  CreateDescriptorPools();
+  CreateDescriptorSets();
+  CreateTextureSampler();
+  TransitionImageLayout(depth_texture_.image, VK_IMAGE_LAYOUT_UNDEFINED,
+                        VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
+}
+
+}  // namespace veng

src/vulkan/devices_and_queues.cpp

@@ -140,6 +140,8 @@ void Graphics::CreateLogicalDeviceAndQueues() {
   }
 
   VkPhysicalDeviceFeatures required_features = {};
+  required_features.depthBounds = true;
+  required_features.depthClamp = true;
 
   VkDeviceCreateInfo device_info = {};
   device_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;

src/vulkan/drawing.cpp

@@ -0,0 +1,191 @@
+#include <GLFW/glfw3.h>
+
+#include "precomp.h"
+#include "vulkan/graphics.h"
+
+namespace veng {
+
+void Graphics::CreateFramebuffers() {
+  swap_chain_framebuffers_.resize(swap_chain_image_views_.size());
+
+  for (std::uint32_t i = 0; i < swap_chain_image_views_.size(); i++) {
+    std::array<VkImageView, 2> attachments = {swap_chain_image_views_[i],
+                                              depth_texture_.image_view};
+
+    VkFramebufferCreateInfo info = {};
+    info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
+    info.renderPass = render_pass_;
+    info.attachmentCount = attachments.size();
+    info.pAttachments = attachments.data();
+    info.width = extent_.width;
+    info.height = extent_.height;
+    info.layers = 1;
+
+    VkResult result = vkCreateFramebuffer(logical_device_, &info, nullptr,
+                                          &swap_chain_framebuffers_[i]);
+    if (result != VK_SUCCESS) std::exit(EXIT_FAILURE);
+  }
+}
+
+void Graphics::CreateCommandPool() {
+  QueueFamilyIndices indices = FindQueueFamilies(physical_device_);
+  VkCommandPoolCreateInfo pool_info = {};
+  pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
+  pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
+  pool_info.queueFamilyIndex = indices.graphics_family.value();
+
+  VkResult result =
+      vkCreateCommandPool(logical_device_, &pool_info, nullptr, &command_pool_);
+  if (result != VK_SUCCESS) std::exit(EXIT_FAILURE);
+}
+
+void Graphics::CreateCommandBuffer() {
+  VkCommandBufferAllocateInfo info = {};
+  info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+  info.commandPool = command_pool_;
+  info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+  info.commandBufferCount = 1;
+
+  for (Frame& frame : frames_) {
+    VkResult result =
+        vkAllocateCommandBuffers(logical_device_, &info, &frame.command_buffer);
+    if (result != VK_SUCCESS) std::exit(EXIT_FAILURE);
+  }
+}
+
+void Graphics::BeginCommands() {
+  vkResetCommandBuffer(frames_[current_frame_].command_buffer, 0);
+
+  VkCommandBufferBeginInfo begin_info = {};
+  begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+
+  VkResult result = vkBeginCommandBuffer(
+      frames_[current_frame_].command_buffer, &begin_info);
+  if (result != VK_SUCCESS)
+    throw std::runtime_error("Failed to begin command buffer!");
+
+  std::array<VkClearValue, 2> clear_values;
+  clear_values[0].color = {{0.f, 0.f, 0.f, 1.f}};
+  clear_values[1].depthStencil = {1.f, 0};
+
+  VkRenderPassBeginInfo render_pass_begin_info = {};
+  render_pass_begin_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+  render_pass_begin_info.renderPass = render_pass_;
+  render_pass_begin_info.framebuffer =
+      swap_chain_framebuffers_[current_image_index_];
+  render_pass_begin_info.renderArea.offset = {0, 0};
+  render_pass_begin_info.renderArea.extent = extent_;
+  render_pass_begin_info.clearValueCount = clear_values.size();
+  render_pass_begin_info.pClearValues = clear_values.data();
+
+  vkCmdBeginRenderPass(frames_[current_frame_].command_buffer,
+                       &render_pass_begin_info,
+                       VK_SUBPASS_CONTENTS_INLINE);
+  vkCmdBindPipeline(frames_[current_frame_].command_buffer,
+                    VK_PIPELINE_BIND_POINT_GRAPHICS,
+                    pipeline_);
+  VkViewport viewport = GetViewport();
+  VkRect2D scissor = GetScissor();
+
+  vkCmdSetViewport(frames_[current_frame_].command_buffer, 0, 1, &viewport);
+  vkCmdSetScissor(frames_[current_frame_].command_buffer, 0, 1, &scissor);
+}
+
+void Graphics::EndCommands() {
+  vkCmdEndRenderPass(frames_[current_frame_].command_buffer);
+  VkResult result = vkEndCommandBuffer(frames_[current_frame_].command_buffer);
+  if (result != VK_SUCCESS)
+    throw std::runtime_error("Failed to record command buffer!");
+}
+
+void Graphics::CreateSignals() {
+  for (Frame& frame : frames_) {
+    VkSemaphoreCreateInfo semafore_info = {};
+    semafore_info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
+
+    if (vkCreateSemaphore(logical_device_, &semafore_info, nullptr,
+                          &frame.image_available_signal) !=
+        VK_SUCCESS)
+      std::exit(EXIT_FAILURE);
+    if (vkCreateSemaphore(logical_device_, &semafore_info, nullptr,
+                          &frame.render_finished_signal) !=
+        VK_SUCCESS)
+      std::exit(EXIT_FAILURE);
+
+    VkFenceCreateInfo fence_info = {};
+    fence_info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
+    fence_info.flags = VK_FENCE_CREATE_SIGNALED_BIT;
+
+    if (vkCreateFence(logical_device_, &fence_info, nullptr,
+                      &frame.still_rendering_fence) !=
+        VK_SUCCESS)
+      std::exit(EXIT_FAILURE);
+  }
+}
+
+bool Graphics::BeginFrame() {
+  vkWaitForFences(logical_device_, 1,
+                  &frames_[current_frame_].still_rendering_fence, VK_TRUE,
+                  UINT64_MAX);
+  VkResult image_acquire_result = vkAcquireNextImageKHR(logical_device_, swap_chain_, UINT64_MAX,
+                            frames_[current_frame_].image_available_signal,
+      VK_NULL_HANDLE, &current_image_index_);
+
+  if (image_acquire_result == VK_ERROR_OUT_OF_DATE_KHR) {
+    RecreateSwapChain();
+    return false;
+  }
+
+  if (image_acquire_result != VK_SUCCESS &&
+      image_acquire_result != VK_SUBOPTIMAL_KHR)
+    throw std::runtime_error("Couldn't acquire render image!");
+
+  vkResetFences(logical_device_, 1,
+                &frames_[current_frame_].still_rendering_fence);
+
+  BeginCommands();
+  SetModelMatrix(glm::mat4(1.f));
+
+  return true;
+}
+
+void veng::Graphics::EndFrame() {
+  EndCommands();
+  VkSubmitInfo submit_info = {};
+  submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+
+  VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
+  submit_info.waitSemaphoreCount = 1;
+  submit_info.pWaitSemaphores = &frames_[current_frame_].image_available_signal;
+  submit_info.pWaitDstStageMask = &wait_stage;
+  submit_info.commandBufferCount = 1;
+  submit_info.pCommandBuffers = &frames_[current_frame_].command_buffer;
+  submit_info.signalSemaphoreCount = 1;
+  submit_info.pSignalSemaphores =
+      &frames_[current_frame_].render_finished_signal;
+
+  VkResult submit_result =
+      vkQueueSubmit(graphics_queue_, 1, &submit_info,
+                    frames_[current_frame_].still_rendering_fence);
+  if (submit_result != VK_SUCCESS)
+    throw std::runtime_error("failed to submit draw commands!");
+
+  VkPresentInfoKHR present_info = {};
+  present_info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+  present_info.waitSemaphoreCount = 1;
+  present_info.pWaitSemaphores =
+      &frames_[current_frame_].render_finished_signal;
+  present_info.swapchainCount = 1;
+  present_info.pSwapchains = &swap_chain_;
+  present_info.pImageIndices = &current_image_index_;
+
+  VkResult result = vkQueuePresentKHR(present_queue_, &present_info);
+  if (result == VK_ERROR_OUT_OF_DATE_KHR || result == VK_SUBOPTIMAL_KHR)
+    RecreateSwapChain();
+  else if (result != VK_SUCCESS)
+    throw std::runtime_error("Failed to present swap chain image!");
+
+  current_frame_ = (current_frame_++) % MAX_BUFFERED_FRAMES;
+}
+
+}  // namespace veng

src/vulkan/graphics.cpp

@@ -8,38 +8,4 @@
 
 namespace veng {
 
-Graphics::Graphics(gsl::not_null<Window*> window) : window_(window) {
-#if !defined(NDEBUG)
-  validation_enabled_ = true;
-#endif
-  InitializeVulkan();
-}
-
-Graphics::~Graphics() {
-  if (logical_device_ != VK_NULL_HANDLE) {
-    for (VkImageView image_view : swap_chain_image_views_)
-      vkDestroyImageView(logical_device_, image_view, nullptr);
-    if (swap_chain_ != VK_NULL_HANDLE)
-      vkDestroySwapchainKHR(logical_device_, swap_chain_, nullptr);
-    vkDestroyDevice(logical_device_, nullptr);
-  }
-  if (instance_ != VK_NULL_HANDLE) {
-    if (surface_ != VK_NULL_HANDLE)
-      vkDestroySurfaceKHR(instance_, surface_, nullptr);
-    if (debug_messenger_ != VK_NULL_HANDLE)
-      vkDestroyDebugUtilsMessengerEXT(instance_, debug_messenger_, nullptr);
-    vkDestroyInstance(instance_, nullptr);
-  }
-}
-
-void Graphics::InitializeVulkan() {
-  CreateInstance();
-  SetupDebugMessenger();
-  CreateSurface();
-  PickPhysicalDevice();
-  CreateLogicalDeviceAndQueues();
-  CreateSwapChain();
-  CreateGraphicsPipeline();
-}
-
 }  // namespace veng

src/vulkan/graphics_pipeline.cpp

@@ -21,6 +21,26 @@ VkShaderModule Graphics::CreateShaderModule(gsl::span<std::uint8_t> buffer) {
   return shader_module;
 }
 
+VkViewport Graphics::GetViewport() {
+  VkViewport viewport = {};
+  viewport.x = 0.f;
+  viewport.y = 0.f;
+  viewport.width = static_cast<std::float_t>(extent_.width);
+  viewport.height = static_cast<std::float_t>(extent_.height);
+  viewport.minDepth = 0.f;
+  viewport.maxDepth = 1.f;
+
+  return viewport;
+}
+
+VkRect2D Graphics::GetScissor() {
+  VkRect2D scissor = {};
+  scissor.offset = {0, 0};
+  scissor.extent = extent_;
+
+  return scissor;
+}
+
 void Graphics::CreateGraphicsPipeline() {
   std::vector<std::uint8_t> basic_vertex_data = ReadFile("./basic.vert.spv");
   VkShaderModule vertex_shader = CreateShaderModule(basic_vertex_data);
@@ -52,5 +72,235 @@ void Graphics::CreateGraphicsPipeline() {
 
   std::array<VkPipelineShaderStageCreateInfo, 2> stage_infos = {
       vertex_stage_info, fragment_stage_info};
+
+  std::array<VkDynamicState, 2> dynamic_states = {VK_DYNAMIC_STATE_VIEWPORT,
+                                                  VK_DYNAMIC_STATE_SCISSOR};
+
+  VkPipelineDynamicStateCreateInfo dynamic_state_info = {};
+  dynamic_state_info.sType =
+      VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
+  dynamic_state_info.dynamicStateCount = dynamic_states.size();
+  dynamic_state_info.pDynamicStates = dynamic_states.data();
+
+  VkViewport viewport = GetViewport();
+
+  VkRect2D scissor = GetScissor();
+
+  VkPipelineViewportStateCreateInfo viewport_info = {};
+  viewport_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
+  viewport_info.viewportCount = 1;
+  viewport_info.pViewports = &viewport;
+  viewport_info.scissorCount = 1;
+  viewport_info.pScissors = &scissor;
+
+  auto vertex_binding_description = Vertex::GetBindingDescription();
+  auto vertex_attribute_descriptions = Vertex::GetAttributeDescriptions();
+
+  VkPipelineVertexInputStateCreateInfo vertex_input_info = {};
+  vertex_input_info.sType =
+      VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
+  vertex_input_info.vertexBindingDescriptionCount = 1;
+  vertex_input_info.pVertexBindingDescriptions = &vertex_binding_description;
+  vertex_input_info.vertexAttributeDescriptionCount =
+      vertex_attribute_descriptions.size();
+  vertex_input_info.pVertexAttributeDescriptions =
+      vertex_attribute_descriptions.data();
+
+  VkPipelineInputAssemblyStateCreateInfo input_assembly_info = {};
+  input_assembly_info.sType =
+      VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
+  input_assembly_info.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
+  input_assembly_info.primitiveRestartEnable = VK_FALSE;
+
+  VkPipelineRasterizationStateCreateInfo rasterization_state_info = {};
+  rasterization_state_info.sType =
+      VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
+  rasterization_state_info.depthClampEnable = VK_FALSE;
+  rasterization_state_info.rasterizerDiscardEnable = VK_FALSE;
+  rasterization_state_info.polygonMode = VK_POLYGON_MODE_FILL;
+  rasterization_state_info.lineWidth = 1.f;
+  rasterization_state_info.cullMode = VK_CULL_MODE_NONE;
+  rasterization_state_info.frontFace = VK_FRONT_FACE_CLOCKWISE;
+  rasterization_state_info.depthBiasEnable = VK_FALSE;
+
+  VkPipelineMultisampleStateCreateInfo multisampling_info = {};
+  multisampling_info.sType =
+      VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
+  multisampling_info.sampleShadingEnable = VK_FALSE;
+  multisampling_info.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
+
+  VkPipelineColorBlendAttachmentState color_blend_attachment = {};
+  color_blend_attachment.colorWriteMask =
+      VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT |
+      VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
+  color_blend_attachment.blendEnable = VK_TRUE;
+  color_blend_attachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
+  color_blend_attachment.dstColorBlendFactor =
+      VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
+  color_blend_attachment.colorBlendOp = VK_BLEND_OP_ADD;
+  color_blend_attachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
+  color_blend_attachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
+  color_blend_attachment.alphaBlendOp = VK_BLEND_OP_ADD;
+
+  VkPipelineColorBlendStateCreateInfo color_blending_info = {};
+  color_blending_info.sType =
+      VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
+  color_blending_info.logicOpEnable = VK_FALSE;
+  color_blending_info.attachmentCount = 1;
+  color_blending_info.pAttachments = &color_blend_attachment;
+
+  VkPipelineDepthStencilStateCreateInfo depth_stencil_info = {};
+  depth_stencil_info.sType =
+      VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
+  depth_stencil_info.depthTestEnable = VK_TRUE;
+  depth_stencil_info.depthWriteEnable = VK_TRUE;
+  depth_stencil_info.depthCompareOp = VK_COMPARE_OP_LESS;
+  depth_stencil_info.depthBoundsTestEnable = VK_TRUE;
+  depth_stencil_info.minDepthBounds = 0.f;
+  depth_stencil_info.maxDepthBounds = 1.f;
+  depth_stencil_info.stencilTestEnable = VK_FALSE;
+
+  VkPushConstantRange model_matrix_range = {};
+  model_matrix_range.offset = 0;
+  model_matrix_range.size = sizeof(glm::mat4);
+  model_matrix_range.stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
+
+  std::array<VkDescriptorSetLayout, 2> set_layouts = {uniform_set_layout_,
+                                                      texture_set_layout_};
+
+  VkPipelineLayoutCreateInfo layout_info = {};
+  layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
+  layout_info.pushConstantRangeCount = 1;
+  layout_info.pPushConstantRanges = &model_matrix_range;
+  layout_info.setLayoutCount = set_layouts.size();
+  layout_info.pSetLayouts = set_layouts.data();
+
+  VkResult layout_result = vkCreatePipelineLayout(logical_device_, &layout_info,
+                                                  nullptr, &pipeline_layout_);
+  if (layout_result != VK_SUCCESS) std::exit(EXIT_FAILURE);
+
+  VkGraphicsPipelineCreateInfo pipeline_info = {};
+  pipeline_info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
+  pipeline_info.stageCount = stage_infos.size();
+  pipeline_info.pStages = stage_infos.data();
+  pipeline_info.pVertexInputState = &vertex_input_info;
+  pipeline_info.pInputAssemblyState = &input_assembly_info;
+  pipeline_info.pViewportState = &viewport_info;
+  pipeline_info.pRasterizationState = &rasterization_state_info;
+  pipeline_info.pMultisampleState = &multisampling_info;
+  pipeline_info.pDepthStencilState = &depth_stencil_info;
+  pipeline_info.pColorBlendState = &color_blending_info;
+  pipeline_info.pDynamicState = &dynamic_state_info;
+  pipeline_info.layout = pipeline_layout_;
+  pipeline_info.renderPass = render_pass_;
+  pipeline_info.subpass = 0;
+
+  VkResult pipline_result = vkCreateGraphicsPipelines(
+      logical_device_, VK_NULL_HANDLE, 1, &pipeline_info, nullptr, &pipeline_);
+  if (pipline_result != VK_SUCCESS) std::exit(EXIT_FAILURE);
 }
+
+void Graphics::CreateRenderPass() {
+  VkAttachmentDescription color_attachment = {};
+  color_attachment.format = surface_format_.format;
+  color_attachment.samples = VK_SAMPLE_COUNT_1_BIT;
+  color_attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+  color_attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+  color_attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+  color_attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+  color_attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+  color_attachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
+
+  VkAttachmentReference color_attachment_ref = {};
+  color_attachment_ref.attachment = 0;
+  color_attachment_ref.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+
+  VkAttachmentDescription depth_attachment = {};
+  depth_attachment.format = VK_FORMAT_D32_SFLOAT;
+  depth_attachment.samples = VK_SAMPLE_COUNT_1_BIT;
+  depth_attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+  depth_attachment.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+  depth_attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+  depth_attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+  depth_attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+  depth_attachment.finalLayout =
+      VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+
+  VkAttachmentReference depth_attachment_ref = {};
+  depth_attachment_ref.attachment = 1;
+  depth_attachment_ref.layout =
+      VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+
+  VkSubpassDescription main_subpass = {};
+  main_subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+  main_subpass.colorAttachmentCount = 1;
+  main_subpass.pColorAttachments = &color_attachment_ref;
+  main_subpass.pDepthStencilAttachment = &depth_attachment_ref;
+
+  VkSubpassDependency dependency = {};
+  dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
+  dependency.dstSubpass = 0;
+  dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT |
+                            VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
+  dependency.srcAccessMask = 0;
+  dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT |
+                            VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
+  dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT |
+                             VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
+
+  std::array<VkAttachmentDescription, 2> attachments = {color_attachment,
+                                                        depth_attachment};
+
+  VkRenderPassCreateInfo render_pass_info = {};
+  render_pass_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+  render_pass_info.attachmentCount = attachments.size();
+  render_pass_info.pAttachments = attachments.data();
+  render_pass_info.subpassCount = 1;
+  render_pass_info.pSubpasses = &main_subpass;
+  render_pass_info.dependencyCount = 1;
+  render_pass_info.pDependencies = &dependency;
+
+  VkResult result = vkCreateRenderPass(logical_device_, &render_pass_info,
+                                       nullptr, &render_pass_);
+  if (result != VK_SUCCESS) std::exit(EXIT_FAILURE);
+}
+
+void veng::Graphics::RecreateSwapChain() {
+  glm::ivec2 size = window_->GetFramebufferSize();
+  while (size.x == 0 || size.y == 0) {
+    size = window_->GetFramebufferSize();
+    // glfwWaitEvents();
+    return;
+  }
+
+  vkDeviceWaitIdle(logical_device_);
+  CleanupSwapChain();
+
+  CreateSwapChain();
+  CreateImageViews();
+  CreateDepthResources();
+  CreateFramebuffers();
+}
+
+void veng::Graphics::CleanupSwapChain() {
+  if (logical_device_ == VK_NULL_HANDLE) return;
+
+  for (VkFramebuffer framebuffer : swap_chain_framebuffers_)
+    vkDestroyFramebuffer(logical_device_, framebuffer, nullptr);
+
+  for (VkImageView image_view : swap_chain_image_views_)
+    vkDestroyImageView(logical_device_, image_view, nullptr);
+
+  if (swap_chain_ != VK_NULL_HANDLE)
+    vkDestroySwapchainKHR(logical_device_, swap_chain_, nullptr);
+
+  vkDeviceWaitIdle(logical_device_);
+  vkDestroyImageView(logical_device_, depth_texture_.image_view, nullptr);
+  depth_texture_.image_view = VK_NULL_HANDLE;
+  vkDestroyImage(logical_device_, depth_texture_.image, nullptr);
+  depth_texture_.image = VK_NULL_HANDLE;
+  vkFreeMemory(logical_device_, depth_texture_.memory, nullptr);
+  depth_texture_.memory = VK_NULL_HANDLE;
+}
+
 }  // namespace veng

src/vulkan/presentation.cpp

@@ -140,30 +140,36 @@ void Graphics::CreateSwapChain() {
                           swap_chain_images_.data());
 }
 
+VkImageView Graphics::CreateImageView(VkImage image, VkFormat format, VkImageAspectFlags aspect_flag) {
+  VkImageViewCreateInfo info = {};
+  info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+  info.image = image;
+  info.viewType = VK_IMAGE_VIEW_TYPE_2D;
+  info.format = format;
+  info.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
+  info.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
+  info.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
+  info.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
+  info.subresourceRange.aspectMask = aspect_flag;
+  info.subresourceRange.baseMipLevel = 0;
+  info.subresourceRange.levelCount = 1;
+  info.subresourceRange.baseArrayLayer = 0;
+  info.subresourceRange.layerCount = 1;
+
+  VkImageView view;
+  VkResult result = vkCreateImageView(logical_device_, &info, nullptr, &view);
+  if (result != VK_SUCCESS) std::exit(EXIT_FAILURE);
+  return view;
+}
+
 void Graphics::CreateImageViews() {
   swap_chain_image_views_.resize(swap_chain_images_.size());
 
   auto image_view_it = swap_chain_image_views_.begin();
   for (VkImage image : swap_chain_images_) {
-    VkImageViewCreateInfo info = {};
-    info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
-    info.image = image;
-    info.viewType = VK_IMAGE_VIEW_TYPE_2D;
-    info.format = surface_format_.format;
-    info.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
-    info.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
-    info.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
-    info.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
-    info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-    info.subresourceRange.baseMipLevel = 0;
-    info.subresourceRange.layerCount = 1;
-    info.subresourceRange.baseArrayLayer = 0;
-    info.subresourceRange.layerCount = 1;
-
-    VkResult result =
-        vkCreateImageView(logical_device_, &info, nullptr, &*image_view_it);
-    if (result != VK_SUCCESS) std::exit(EXIT_FAILURE);
-    std::next(image_view_it);
+    *image_view_it = CreateImageView(image, surface_format_.format, VK_IMAGE_ASPECT_COLOR_BIT);
+    
+    std::advance(image_view_it, 1);
   }
 }
 

src/vulkan/texture.cpp

@@ -0,0 +1,250 @@
+#include <vulkan/vulkan.h>
+
+#include "stb/stb_image.h"
+#include "vulkan/graphics.h"
+
+namespace veng {
+
+void Graphics::CreateTextureSampler() {
+  VkSamplerCreateInfo sampler_info = {};
+  sampler_info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
+  sampler_info.magFilter = VK_FILTER_LINEAR;
+  sampler_info.minFilter = VK_FILTER_LINEAR;
+  sampler_info.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
+  sampler_info.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
+  sampler_info.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
+  sampler_info.anisotropyEnable = VK_FALSE;
+  sampler_info.maxAnisotropy = 1.f;
+  sampler_info.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_BLACK;
+  sampler_info.unnormalizedCoordinates = VK_FALSE;
+  sampler_info.compareEnable = VK_FALSE;
+  sampler_info.compareOp = VK_COMPARE_OP_ALWAYS;
+  sampler_info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
+  sampler_info.mipLodBias = 0.f;
+  sampler_info.minLod = 0.f;
+  sampler_info.maxLod = 0.f;
+
+  if (vkCreateSampler(logical_device_, &sampler_info, nullptr,
+                      &texture_sampler_) != VK_SUCCESS) {
+    std::exit(EXIT_FAILURE);
+  }
+}
+
+TextureHandle Graphics::CreateTexture(gsl::czstring path) {
+  glm::ivec2 image_extents;
+  std::int32_t channels;
+  std::vector<std::uint8_t> image_file_data = ReadFile(path);
+  stbi_uc* pixel_data = stbi_load_from_memory(
+      image_file_data.data(), image_file_data.size(), &image_extents.x,
+      &image_extents.y, &channels, STBI_rgb_alpha);
+
+  VkDeviceSize buffer_size = image_extents.x * image_extents.y * 4;
+  BufferHandle staging =
+      CreateBuffer(buffer_size, VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
+                   VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
+                       VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
+  void* data_location;
+  vkMapMemory(logical_device_, staging.memory, 0, buffer_size, 0,
+              &data_location);
+  std::memcpy(data_location, pixel_data, buffer_size);
+  vkUnmapMemory(logical_device_, staging.memory);
+
+  stbi_image_free(pixel_data);
+
+  TextureHandle handle =
+      CreateImage(image_extents, VK_FORMAT_R8G8B8A8_SRGB,
+                  VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
+                  VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
+
+  TransitionImageLayout(handle.image, VK_IMAGE_LAYOUT_UNDEFINED,
+                        VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
+  CopyBufferToImage(staging.buffer, handle.image, image_extents);
+  TransitionImageLayout(handle.image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
+                        VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
+
+  handle.image_view = CreateImageView(handle.image, VK_FORMAT_R8G8B8A8_SRGB,
+                                      VK_IMAGE_ASPECT_COLOR_BIT);
+
+  VkDescriptorSetAllocateInfo set_info = {};
+  set_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
+  set_info.descriptorPool = texture_pool_;
+  set_info.descriptorSetCount = 1;
+  set_info.pSetLayouts = &texture_set_layout_;
+
+  VkResult result =
+      vkAllocateDescriptorSets(logical_device_, &set_info, &handle.set);
+  if (result != VK_SUCCESS) std::exit(EXIT_FAILURE);
+
+  VkDescriptorImageInfo image_info = {};
+  image_info.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+  image_info.imageView = handle.image_view;
+  image_info.sampler = texture_sampler_;
+
+  VkWriteDescriptorSet descriptor_write = {};
+  descriptor_write.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
+  descriptor_write.dstSet = handle.set;
+  descriptor_write.dstBinding = 0;
+  descriptor_write.dstArrayElement = 0;
+  descriptor_write.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
+  descriptor_write.descriptorCount = 1;
+  descriptor_write.pImageInfo = &image_info;
+
+  vkUpdateDescriptorSets(logical_device_, 1, &descriptor_write, 0, nullptr);
+
+  DestroyBuffer(staging);
+  return handle;
+}
+
+void Graphics::DestroyTexture(TextureHandle handle) {
+  vkDeviceWaitIdle(logical_device_);
+
+  if (handle.set != VK_NULL_HANDLE)
+    vkFreeDescriptorSets(logical_device_, texture_pool_, 1, &handle.set);
+
+  if (handle.image_view != VK_NULL_HANDLE)
+    vkDestroyImageView(logical_device_, handle.image_view, nullptr);
+
+  if (handle.image != VK_NULL_HANDLE)
+    vkDestroyImage(logical_device_, handle.image, nullptr);
+
+  if (handle.memory != VK_NULL_HANDLE)
+    vkFreeMemory(logical_device_, handle.memory, nullptr);
+}
+
+void Graphics::SetTexture(TextureHandle handle) {
+  vkCmdBindDescriptorSets(frames_[current_frame_].command_buffer,
+                          VK_PIPELINE_BIND_POINT_GRAPHICS,
+                          pipeline_layout_, 1, 1, &handle.set, 0, nullptr);
+}
+
+void Graphics::TransitionImageLayout(VkImage image, VkImageLayout old_layout,
+                                     VkImageLayout new_layout) {
+  VkCommandBuffer local_command_buffer = BeginTransientCommandBuffer();
+
+  VkImageMemoryBarrier barrier = {};
+  barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
+  barrier.oldLayout = old_layout;
+  barrier.newLayout = new_layout;
+  barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+  barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+  barrier.image = image;
+  barrier.subresourceRange.baseArrayLayer = 0;
+  barrier.subresourceRange.baseMipLevel = 0;
+  barrier.subresourceRange.levelCount = 1;
+  barrier.subresourceRange.layerCount = 1;
+
+  VkPipelineStageFlags source_stage = {};
+  VkPipelineStageFlags destination_stage = {};
+
+  if (old_layout == VK_IMAGE_LAYOUT_UNDEFINED &&
+      new_layout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL) {
+    barrier.srcAccessMask = 0;
+    barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
+    source_stage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
+    destination_stage = VK_PIPELINE_STAGE_TRANSFER_BIT;
+  } else if (old_layout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL &&
+             new_layout == VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL) {
+    barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
+    barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
+    source_stage = VK_PIPELINE_STAGE_TRANSFER_BIT;
+    destination_stage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
+  } else if (old_layout == VK_IMAGE_LAYOUT_UNDEFINED &&
+             new_layout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL) {
+    barrier.srcAccessMask = 0;
+    barrier.dstAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT |
+                            VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
+    source_stage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
+    destination_stage = VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
+  }
+
+  if (new_layout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL)
+    barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
+  else
+    barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+
+  vkCmdPipelineBarrier(local_command_buffer, source_stage, destination_stage, 0,
+                       0, nullptr, 0, nullptr, 1, &barrier);
+
+  EndTransientCommandBuffer(local_command_buffer);
+}
+
+void Graphics::CopyBufferToImage(VkBuffer buffer, VkImage image,
+                                 glm::ivec2 image_size) {
+  VkCommandBuffer local_command_buffer = BeginTransientCommandBuffer();
+
+  VkBufferImageCopy region = {};
+  region.bufferOffset = 0;
+  region.bufferRowLength = 0;
+  region.bufferImageHeight = 0;
+  region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+  region.imageSubresource.mipLevel = 0;
+  region.imageSubresource.baseArrayLayer = 0;
+  region.imageSubresource.layerCount = 1;
+  region.imageOffset = {0, 0, 0};
+  region.imageExtent = {static_cast<std::uint32_t>(image_size.x),
+                        static_cast<std::uint32_t>(image_size.y), 1};
+
+  vkCmdCopyBufferToImage(local_command_buffer, buffer, image,
+                         VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
+
+  EndTransientCommandBuffer(local_command_buffer);
+}
+
+TextureHandle Graphics::CreateImage(glm::ivec2 size, VkFormat image_format,
+                                    VkBufferUsageFlags usage,
+                                    VkMemoryPropertyFlags properties) {
+  TextureHandle handle = {};
+
+  VkImageCreateInfo image_info = {};
+  image_info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
+  image_info.usage = usage;
+  image_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+  image_info.imageType = VK_IMAGE_TYPE_2D;
+  image_info.extent.width = size.x;
+  image_info.extent.height = size.y;
+  image_info.extent.depth = 1;
+  image_info.mipLevels = 1;
+  image_info.arrayLayers = 1;
+  image_info.format = image_format;
+  image_info.tiling = VK_IMAGE_TILING_OPTIMAL;
+  image_info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+  image_info.samples = VK_SAMPLE_COUNT_1_BIT;
+  image_info.flags = 0;
+
+  VkResult result =
+      vkCreateImage(logical_device_, &image_info, nullptr, &handle.image);
+  if (result != VK_SUCCESS)
+    throw std::runtime_error("Failed to create vertex buffer!");
+
+  VkMemoryRequirements memory_requirements;
+  vkGetImageMemoryRequirements(logical_device_, handle.image,
+                               &memory_requirements);
+
+  std::uint32_t chosen_memory_type =
+      FindMemoryType(memory_requirements.memoryTypeBits, properties);
+
+  VkMemoryAllocateInfo allocation_info = {};
+  allocation_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
+  allocation_info.allocationSize = memory_requirements.size;
+  allocation_info.memoryTypeIndex = chosen_memory_type;
+
+  VkResult allocation_result = vkAllocateMemory(
+      logical_device_, &allocation_info, nullptr, &handle.memory);
+  if (allocation_result != VK_SUCCESS)
+    throw std::runtime_error("Failed to allocate image memory!");
+
+  vkBindImageMemory(logical_device_, handle.image, handle.memory, 0);
+
+  return handle;
+}
+
+void Graphics::CreateDepthResources() {
+  VkFormat kDepthFormat = VK_FORMAT_D32_SFLOAT;
+  depth_texture_ = CreateImage({extent_.width, extent_.height}, kDepthFormat,
+                               VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT,
+                               VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
+  depth_texture_.image_view = CreateImageView(
+      depth_texture_.image, kDepthFormat, VK_IMAGE_ASPECT_DEPTH_BIT);
+}
+
+}  // namespace veng