Add Offscreen Framebuffer support

.gitignore

@@ -5,3 +5,4 @@ Release/
 */Release/
 bin/
 .ycm_extra_conf.py
+.cache

Vulkan/Vulkan.vcxproj

@@ -130,7 +130,8 @@
       </Command>
     </PreBuildEvent>
     <PostBuildEvent>
-      <Command>glslc res/shaders/shader.vert -o res/shaders/vert.spv &amp;&amp; glslc res/shaders/shader.frag -o res/shaders/frag.spv</Command>
+      <Command>
+      </Command>
     </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
@@ -157,12 +158,14 @@
       </Command>
     </PreBuildEvent>
     <PostBuildEvent>
-      <Command>glslc res/shaders/shader.vert -o res/shaders/vert.spv &amp;&amp; glslc res/shaders/shader.frag -o res/shaders/frag.spv</Command>
+      <Command>
+      </Command>
     </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="src\main.cpp" />
     <ClCompile Include="src\SwapChain.cpp" />
+    <ClCompile Include="src\Texture2D.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="src\Buffer.h" />
@@ -172,6 +175,7 @@
     <ClInclude Include="src\DescriptorSet.h" />
     <ClInclude Include="src\DescriptorPool.h" />
     <ClInclude Include="src\FileSystem.h" />
+    <ClInclude Include="src\Framebuffer.h" />
     <ClInclude Include="src\Image.h" />
     <ClInclude Include="src\IndexBuffer.h" />
     <ClInclude Include="src\Pipeline.h" />
@@ -189,13 +193,14 @@
     <ClInclude Include="src\VertexDescriptor.h" />
     <ClInclude Include="src\VulkanException.h" />
     <ClInclude Include="src\Window.h" />
+    <ClInclude Include="src\VertexPassthrough.h" />
   </ItemGroup>
   <ItemGroup>
     <None Include="compile.bat" />
-    <None Include="res\shaders\frag.spv" />
+    <None Include="res\shaders\passthrough.frag" />
+    <None Include="res\shaders\passthrough.vert" />
     <None Include="res\shaders\shader.frag" />
     <None Include="res\shaders\shader.vert" />
-    <None Include="res\shaders\vert.spv" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

Vulkan/Vulkan.vcxproj.filters

@@ -21,6 +21,9 @@
     <ClCompile Include="src\SwapChain.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="src\Texture2D.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="src\DebugMessenger.h">
@@ -95,6 +98,12 @@
     <ClInclude Include="src\Image.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="src\Framebuffer.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="src\VertexPassthrough.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="res\shaders\shader.frag" />
@@ -102,7 +111,7 @@
     <None Include="compile.bat">
       <Filter>Source Files</Filter>
     </None>
-    <None Include="res\shaders\frag.spv" />
+    <None Include="res\shaders\passthrough.frag" />
-    <None Include="res\shaders\vert.spv" />
+    <None Include="res\shaders\passthrough.vert" />
   </ItemGroup>
 </Project>

Vulkan/res/shaders/passthrough.frag

@@ -0,0 +1,11 @@
+#version 450
+
+layout(set = 0, binding = 0) uniform sampler2D texSampler;
+layout(location = 0) in vec2 fragTexCoord;
+
+layout(location = 0) out vec4 outColor;
+
+void main()
+{
+  outColor = texture(texSampler, fragTexCoord);
+}

Vulkan/res/shaders/passthrough.vert

@@ -0,0 +1,11 @@
+#version 450
+
+layout(location = 0) in vec2 inPosition;
+
+layout(location = 0) out vec2 fragTexCoord;
+
+void main()
+{
+  gl_Position = vec4(inPosition* 0.5, 0.999, 1.0);
+  fragTexCoord = inPosition * 0.5 + 0.5;
+}

Vulkan/res/shaders/shader.frag

@@ -10,6 +10,6 @@ layout(location = 3) in vec3 fragLightPos;
 layout(location = 0) out vec4 outColor;
 
 void main() {
-    float scale = 0.45 +  max(dot(vec3(0, 1, 0), normalize(fragLightPos - fragPosition)), 0.0);
+  float scale = 0.45 +  max(dot(vec3(0, 1, 0), normalize(fragLightPos - fragPosition)), 0.0);
-    outColor = vec4(fragColor, 1.0) * texture(texSampler, fragTexCoord) * scale;
+  outColor = vec4(fragColor, 1.0) * texture(texSampler, fragTexCoord) * scale;
 }

Vulkan/res/shaders/shader.vert

@@ -2,10 +2,10 @@
 
 layout(set = 0, binding = 0) uniform SceneUniformBufferObject
 {
-	mat4 projection;
+  mat4 projection;
-	mat4 view;
+  mat4 view;
-	mat4 model;
+  mat4 model;
-	vec3 lightPos;
+  vec3 lightPos;
 } ubo;
 
 layout(location = 0) in vec3 inPosition;
@@ -18,9 +18,9 @@ layout(location = 2) out vec3 fragPosition;
 layout(location = 3) out vec3 fragLightPos;
 
 void main() {
-    gl_Position = ubo.projection * ubo.view * ubo.model * vec4(inPosition, 1.0);
+  gl_Position = ubo.projection * ubo.view * ubo.model * vec4(inPosition, 1.0);
-    fragColor = inColor;
+  fragColor = inColor;
-	fragTexCoord = inTexCoord;
+  fragTexCoord = inTexCoord;
-    fragPosition =	vec3(ubo.model * vec4(inPosition, 1.0));
+  fragPosition =  vec3(ubo.model * vec4(inPosition, 1.0));
-	fragLightPos = ubo.lightPos;
+  fragLightPos = ubo.lightPos;
 }

Vulkan/src/Buffer.h

@@ -100,7 +100,7 @@ public:
 		mappedData = nullptr;
   }
 
-  virtual void Bind(VkCommandBuffer commandBuffer) { CP_UNIMPLEMENTED(); };
+  virtual void Bind(const CommandBuffer& commandBuffer) { CP_UNIMPLEMENTED(); };
 
   void BindAsVertexBuffer(VkCommandBuffer commandBuffer)
   {

Vulkan/src/CommandBuffer.h

@@ -41,6 +41,11 @@ public:
     vkFreeCommandBuffers(instance.GetDevice(), instance.GetCommandPool(), commandBuffers.size(), commandBuffers.data());
   }
 
+  operator VkCommandBuffer() const
+  {
+    return currentCommandBuffer;
+  }
+
   // TODO: Test as constexpr function to see if it avoids the switch case
   void Begin()
   {
@@ -87,7 +92,7 @@ public:
     instance.SubmitGraphicsQueue({currentCommandBuffer});
   }
 
-  VkCommandBuffer GetHandle()
+  VkCommandBuffer GetHandle() const
   {
     return currentCommandBuffer;
   }

Vulkan/src/Common.h

@@ -21,11 +21,17 @@
 #define CP_ERR_CONT(format, ...)   std::cout << TERM_RED    << "      " << StringFormat(format, __VA_ARGS__) << TERM_CLEAR << std::endl
 
 #define CP_UNIMPLEMENTED() CP_WARN("%s is unimplemented", __FUNCTION__)
+#define CP_ABORT(format, ...) \
+  do \
+  { \
+    CP_ERR(format, __VA_ARGS__); \
+    throw std::runtime_error(StringFormat(format, __VA_ARGS__)); \
+  } while(false)
 #define CP_ASSERT(Function, format, ...) \
-	do \
+  do \
   { \
     if(!(Function)) \
-		{ \
+    { \
       CP_ERR(format, __VA_ARGS__); \
       throw std::runtime_error(StringFormat(format, __VA_ARGS__)); \
     } \
@@ -40,16 +46,16 @@
     } \
   } while(false)
 #define CP_DELETE_COPY_AND_MOVE_CTOR(ClassName) \
-	ClassName(ClassName&&) = delete; \
+  ClassName(ClassName&&) = delete; \
-	ClassName(const ClassName&) = delete; \
+  ClassName(const ClassName&) = delete; \
-	ClassName& operator=(ClassName&&) = delete; \
+  ClassName& operator=(ClassName&&) = delete; \
-	ClassName& operator=(const ClassName&) = delete
+  ClassName& operator=(const ClassName&) = delete
 
 template<typename ... Args>
 std::string StringFormat(const std::string& format, Args... args)
 {
     int size = std::snprintf(nullptr, 0, format.c_str(), args...) + 1;
-		CP_ASSERT(size > 0, "Error during formatting");
+    CP_ASSERT(size > 0, "Error during formatting");
     std::unique_ptr<char[]> buf(new char[size]);
     std::snprintf(buf.get(), size, format.c_str(), args...);
     return std::string(buf.get(), buf.get() + size - 1);

Vulkan/src/DescriptorSet.h

@@ -49,11 +49,11 @@ public:
 
   void AddTexture2D(const Texture2D& texture2D, uint32_t binding)
   {
-    VkDescriptorImageInfo imageInfo = texture2D.GetDescriptorImageInfo();
+    for (size_t i = 0; i < instance.GetMaxFramesInFlight(); ++i) {
-    for (auto&& descriptorSet : descriptorSets) {
+      VkDescriptorImageInfo imageInfo = texture2D.GetDescriptorImageInfo(i);
       VkWriteDescriptorSet descriptorWrite{};
       descriptorWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
-      descriptorWrite.dstSet = descriptorSet;
+      descriptorWrite.dstSet = descriptorSets[i];
       descriptorWrite.dstBinding = binding;
       descriptorWrite.dstArrayElement = 0;
       descriptorWrite.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;

Vulkan/src/FileSystem.h

@@ -2,6 +2,7 @@
 
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <filesystem>
 
 #include "Common.h"
 
@@ -48,6 +49,8 @@ namespace FileSystem
 
 	static void WriteFile(const std::string& filename, const char* data, size_t size)
 	{
+		std::filesystem::path path{filename};
+		std::filesystem::create_directories(path.parent_path());
 		std::ofstream file(filename, std::ios::binary);
 		CP_ASSERT(file.is_open(), "Failed to open file");
 

Vulkan/src/Framebuffer.h

@@ -0,0 +1,174 @@
+#pragma once
+
+#include "Common.h"
+#include "Image.h"
+#include "Instance.h"
+#include "Texture2D.h"
+
+#include  <vulkan/vulkan.hpp>
+
+// TODO: Add resizing (recreate image, depthImage, framebuffers)
+class Framebuffer
+{
+  CP_DELETE_COPY_AND_MOVE_CTOR(Framebuffer);
+private:
+  Instance& instance;
+
+  std::unique_ptr<Texture2D> image;
+  std::unique_ptr<Texture2D> depthImage;
+  std::vector<VkFramebuffer> framebuffers;
+  VkRenderPass renderPass;
+
+  uint32_t width;
+  uint32_t height;
+public:
+  Framebuffer(Instance& instance, uint32_t width, uint32_t height)
+    : instance{instance}, width{width}, height{height}
+  {
+    InitializeImages();
+    InitializeDepthBuffer();
+    InitializeRenderPass();
+    InitializeFramebuffers();
+  }
+
+  ~Framebuffer()
+  {
+    for (auto& framebuffer : framebuffers)
+      vkDestroyFramebuffer(instance.GetDevice(), framebuffer, nullptr);
+    vkDestroyRenderPass(instance.GetDevice(), renderPass, nullptr);
+  }
+
+  void Bind(const CommandBuffer& commandBuffer)
+  {
+    std::vector<VkClearValue> clearValues{2};
+    clearValues[0].color = {{0.0f, 0.0f, 0.0f, 1.0f}};
+    clearValues[1].depthStencil = {1.0f, 0};
+
+    VkRenderPassBeginInfo renderPassBeginInfo{};
+    renderPassBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+    renderPassBeginInfo.renderPass = renderPass;
+    renderPassBeginInfo.framebuffer = framebuffers[instance.GetFlightIndex()];
+    renderPassBeginInfo.renderArea.offset = {0, 0};
+    renderPassBeginInfo.renderArea.extent = {width, height};
+    renderPassBeginInfo.clearValueCount = clearValues.size();
+    renderPassBeginInfo.pClearValues = clearValues.data();
+    vkCmdBeginRenderPass(commandBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
+  }
+
+  void Unbind(const CommandBuffer& commandBuffer)
+  {
+    vkCmdEndRenderPass(commandBuffer);
+  }
+
+  VkRenderPass GetRenderPass() const
+  {
+    return renderPass;
+  }
+
+  VkFramebuffer GetFramebuffer() const
+  {
+    return framebuffers[instance.GetFlightIndex()];
+  }
+
+  const Texture2D& GetTexture2D() const
+  {
+    return *image;
+  }
+
+private:
+
+  void InitializeImages()
+  {
+    image = std::make_unique<Texture2D>(instance, width, height, Texture2D::Type::Dynamic, Texture2D::Format::Color);
+  }
+
+  void InitializeDepthBuffer()
+  {
+    depthImage = std::make_unique<Texture2D>(instance, width, height, Texture2D::Type::Static, Texture2D::Format::Depth);
+  }
+
+  void InitializeRenderPass()
+  {
+    VkAttachmentDescription colorAttachment{};
+    colorAttachment.format = VK_FORMAT_R8G8B8A8_SRGB;
+    colorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
+    colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+    colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+    colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+    colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+    colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+    colorAttachment.finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+
+    VkAttachmentDescription depthAttachment{};
+    depthAttachment.format = Image::SelectDepthFormat(instance);
+    depthAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
+    depthAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+    depthAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+    depthAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+    depthAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+    depthAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+    depthAttachment.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+
+    VkAttachmentReference colorAttachmentRef{};
+    colorAttachmentRef.attachment = 0;
+    colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+
+    VkAttachmentReference depthAttachmentRef{};
+    depthAttachmentRef.attachment = 1;
+    depthAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+
+    VkSubpassDescription subpass{};
+    subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+    subpass.colorAttachmentCount = 1;
+    subpass.pColorAttachments = &colorAttachmentRef;
+    subpass.pDepthStencilAttachment = &depthAttachmentRef;
+
+    std::vector<VkSubpassDependency> dependencies{2};
+    dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
+    dependencies[0].dstSubpass = 0;
+    dependencies[0].srcStageMask = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
+    dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+    dependencies[0].srcAccessMask = VK_ACCESS_SHADER_READ_BIT;
+    dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
+
+    dependencies[1].srcSubpass = 0;
+    dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL;
+    dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+    dependencies[1].dstStageMask = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
+    dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
+    dependencies[1].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
+
+    std::vector<VkAttachmentDescription> attachments{colorAttachment, depthAttachment};
+    VkRenderPassCreateInfo renderPassCreateInfo{};
+    renderPassCreateInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+    renderPassCreateInfo.attachmentCount = attachments.size();
+    renderPassCreateInfo.pAttachments = attachments.data();
+    renderPassCreateInfo.subpassCount = 1;
+    renderPassCreateInfo.pSubpasses = &subpass;
+    renderPassCreateInfo.dependencyCount = dependencies.size();
+    renderPassCreateInfo.pDependencies = dependencies.data();
+
+    CP_VK_ASSERT(vkCreateRenderPass(instance.GetDevice(), &renderPassCreateInfo, nullptr, &renderPass), "InitializeRenderPass : Failed to initialze render pass");
+  }
+
+  void InitializeFramebuffers()
+  {
+    framebuffers.resize(instance.GetMaxFramesInFlight());
+
+    for (size_t i = 0; i < instance.GetMaxFramesInFlight(); ++i)
+    {
+      std::vector<VkImageView> attachments{image->GetImageView(i), depthImage->GetImageView()};
+
+      VkFramebufferCreateInfo createInfo{};
+      createInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
+      createInfo.renderPass = renderPass;
+      createInfo.attachmentCount = attachments.size();
+      createInfo.pAttachments = attachments.data();
+      createInfo.width = width;
+      createInfo.height = height;
+      createInfo.layers = 1;
+
+      CP_VK_ASSERT(vkCreateFramebuffer(instance.GetDevice(), &createInfo, nullptr, &framebuffers[i]), "InitializeFramebuffers : Failed to initialize swap chain framebuffer");
+    }
+  }
+};

Vulkan/src/Image.h

@@ -28,7 +28,7 @@ public:
     createInfo.samples = VK_SAMPLE_COUNT_1_BIT;
     createInfo.flags = 0;
 
-    CP_VK_ASSERT(vkCreateImage(instance.GetDevice(), &createInfo, nullptr, image), "Failed to initialize image");
+    CP_VK_ASSERT(vkCreateImage(instance.GetDevice(), &createInfo, nullptr, image), "InitializeImage : Failed to initialize image");
 
     VkMemoryRequirements memoryRequirements;
     vkGetImageMemoryRequirements(instance.GetDevice(), *image, &memoryRequirements);
@@ -38,7 +38,7 @@ public:
     allocateInfo.allocationSize = memoryRequirements.size;
     allocateInfo.memoryTypeIndex = instance.FindMemoryType(memoryRequirements.memoryTypeBits, properties);
 
-    CP_VK_ASSERT(vkAllocateMemory(instance.GetDevice(), &allocateInfo, nullptr, imageMemory), "Failed to initiallizse image memory");
+    CP_VK_ASSERT(vkAllocateMemory(instance.GetDevice(), &allocateInfo, nullptr, imageMemory), "InitializeImage : Failed to initiallizse image memory");
 
     vkBindImageMemory(instance.GetDevice(), *image, *imageMemory, 0);
   }
@@ -60,7 +60,7 @@ public:
     createInfo.subresourceRange.levelCount = 1;
     createInfo.subresourceRange.baseArrayLayer = 0;
     createInfo.subresourceRange.layerCount = 1;
-    CP_VK_ASSERT(vkCreateImageView(instance.GetDevice(), &createInfo, nullptr, &imageView), "Failed to initialize image view");
+    CP_VK_ASSERT(vkCreateImageView(instance.GetDevice(), &createInfo, nullptr, &imageView), "InitializeImageView : Failed to initialize image view");
     return imageView;
   }
 
@@ -115,12 +115,19 @@ public:
       srcStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
       dstStage = VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
     }
+    else if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED && newLayout == VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL) {
+      barrier.srcAccessMask = 0;
+      barrier.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
+
+      srcStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
+      dstStage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+    }
     else 
     {
-      throw std::invalid_argument("Unsupported layout transition");
+      CP_ABORT("TransitioinImageLayout : Unsupported layout transition");
     }
 
-    vkCmdPipelineBarrier(commandBuffer.GetHandle(), srcStage, dstStage, 0, 0, nullptr, 0, nullptr, 1, &barrier);
+    vkCmdPipelineBarrier(commandBuffer, srcStage, dstStage, 0, 0, nullptr, 0, nullptr, 1, &barrier);
   }
 
   static void CopyBufferToImage(Instance& instance, const Buffer& buffer, VkImage image, uint32_t width, uint32_t height)
@@ -140,7 +147,13 @@ public:
     region.imageOffset = {0, 0, 0};
     region.imageExtent = {width, height, 1};
 
-    vkCmdCopyBufferToImage(commandBuffer.GetHandle(), buffer.GetHandle(), image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
+    vkCmdCopyBufferToImage(commandBuffer, buffer.GetHandle(), image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
+  }
+
+
+  static VkFormat SelectDepthFormat(Instance& instance)
+  {
+    return SelectSupportedFormat(instance, {VK_FORMAT_D32_SFLOAT, VK_FORMAT_D32_SFLOAT_S8_UINT, VK_FORMAT_D24_UNORM_S8_UINT}, VK_IMAGE_TILING_OPTIMAL, VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT);
   }
 
 private:
@@ -148,4 +161,22 @@ private:
   {
     return format == VK_FORMAT_D32_SFLOAT_S8_UINT || format == VK_FORMAT_D24_UNORM_S8_UINT;
   }
+
+  static VkFormat SelectSupportedFormat(Instance& instance, const std::vector<VkFormat>& candidates, VkImageTiling tiling, VkFormatFeatureFlags features)
+  {
+    for (VkFormat format : candidates) 
+    {
+      VkFormatProperties properties;
+      vkGetPhysicalDeviceFormatProperties(instance.GetPhysicalDevice(), format, &properties);
+      if(tiling == VK_IMAGE_TILING_LINEAR && (properties.linearTilingFeatures & features) == features)
+      {
+        return format;
+      }
+      else if (tiling == VK_IMAGE_TILING_OPTIMAL && (properties.optimalTilingFeatures & features) == features)
+      {
+        return format;
+      }
+    }
+    CP_ABORT("SelectSupportedFormat : Failed to select supported format");
+  }
 };

Vulkan/src/IndexBuffer.h

@@ -12,12 +12,12 @@ public:
     : Buffer{instance, VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, indexCount * sizeof(uint16_t), 1}, indexCount{indexCount}
   {}
 
-  void Bind(VkCommandBuffer commandBuffer) override
+  void Bind(const CommandBuffer& commandBuffer) override
   {
     vkCmdBindIndexBuffer(commandBuffer, handle, 0, VK_INDEX_TYPE_UINT16);
   }
 
-  void Draw(VkCommandBuffer commandBuffer)
+  void Draw(const CommandBuffer& commandBuffer)
   {
     vkCmdDrawIndexed(commandBuffer, indexCount, 1, 0, 0, 0);
   }

Vulkan/src/Pipeline.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "Common.h"
+#include "CommandBuffer.h"
 #include "Instance.h"
 #include "FileSystem.h"
 #include "DescriptorSet.h"
@@ -40,7 +41,7 @@ public:
     }
   }
 
-  void Bind(VkCommandBuffer commandBuffer)
+  void Bind(const CommandBuffer& commandBuffer)
   {
     vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, graphicsPipeline);
 
@@ -231,7 +232,7 @@ private:
     graphicsPipelineCreateInfo.pColorBlendState = &colorBlendCreateInfo;
     graphicsPipelineCreateInfo.pDynamicState = &dynamicStateCreateInfo;
     graphicsPipelineCreateInfo.layout = pipelineLayout;
-    graphicsPipelineCreateInfo.renderPass = instance.GetSwapChain().GetRenderPass();
+    graphicsPipelineCreateInfo.renderPass = creator.renderPass;
     graphicsPipelineCreateInfo.subpass = 0;
     graphicsPipelineCreateInfo.basePipelineHandle = VK_NULL_HANDLE;
     graphicsPipelineCreateInfo.basePipelineIndex =  -1;

Vulkan/src/PipelineCreator.h

@@ -25,10 +25,11 @@ private:
 	VkPrimitiveTopology topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
   VkCullModeFlags cullMode = VK_CULL_MODE_BACK_BIT;
 	VkFrontFace frontFace = VK_FRONT_FACE_CLOCKWISE;
+	VkRenderPass renderPass = VK_NULL_HANDLE;
 
 public:
-	PipelineCreator(const std::string& vertexShader, const std::string& fragmentShader)
+	PipelineCreator(VkRenderPass renderPass, const std::string& vertexShader, const std::string& fragmentShader)
-		: vertexShader{vertexShader}, fragmentShader{fragmentShader}
+		: vertexShader{vertexShader}, fragmentShader{fragmentShader}, renderPass{renderPass}
 	{}
 
 	void SetVertexDescriptor(const VertexDescriptor& descriptor)
@@ -38,7 +39,7 @@ public:
 
 	void AddDescriptorSetLayoutBinding(uint32_t set, uint32_t binding, VkDescriptorType type, uint32_t count, VkShaderStageFlags stageFlags)
 	{
-		CP_ASSERT(set <= descriptorSetLayouts.size(), "Cannot add descriptor set with set number greater than the current set count");
+		CP_ASSERT(set <= descriptorSetLayouts.size(), "AddDescriptorSetLayoutBinding : Cannot add descriptor set with set number greater than the current set count");
 		descriptorSetLayouts[set].emplace_back(DescriptorSetBinding{binding, type, count, stageFlags});
 	}
 

Vulkan/src/Shader.h

@@ -89,7 +89,7 @@ private:
 
   VkShaderModule InitializeShaderModuleFromGlslFile(const std::string& filename, shaderc_shader_kind shaderType)
   {
-    std::string spvFilename = filename + ".spv";
+    std::string spvFilename = ".cache/" + filename + ".spv";
     try
     {
       if (FileSystem::FileExists(spvFilename))

Vulkan/src/SwapChain.cpp

@@ -1,8 +1,10 @@
 #include "SwapChain.h"
 
+#include "CommandBuffer.h"
 #include "Image.h"
 #include "Instance.h"
 #include "QueueFamilies.h"
+#include "Texture2D.h"
 
 #include <glfw/glfw3.h>
 #include <vulkan/vulkan.h>
@@ -50,6 +52,28 @@ SwapChain::~SwapChain()
 	vkDestroyRenderPass(instance.GetDevice(), renderPass, nullptr);
 }
 
+void SwapChain::BeginFrameBuffer(const CommandBuffer& commandBuffer) const
+{
+  std::vector<VkClearValue> clearValues{2};
+  clearValues[0].color = {{0.02f, 0.02f, 0.02f, 1.0f}};
+  clearValues[1].depthStencil = {1.0f, 0};
+
+  VkRenderPassBeginInfo renderPassBeginInfo{};
+  renderPassBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+	renderPassBeginInfo.renderPass = renderPass;
+  renderPassBeginInfo.framebuffer = framebuffers[imageIndex];
+  renderPassBeginInfo.renderArea.offset = {0, 0};
+	renderPassBeginInfo.renderArea.extent = extent;
+  renderPassBeginInfo.clearValueCount = clearValues.size();
+  renderPassBeginInfo.pClearValues = clearValues.data();
+  vkCmdBeginRenderPass(commandBuffer, &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
+}
+
+void SwapChain::EndFrameBuffer(const CommandBuffer& commandBuffer) const
+{
+  vkCmdEndRenderPass(commandBuffer);
+}
+
 VkSwapchainKHR SwapChain::GetHandle() const
 {
 	return handle;
@@ -182,11 +206,7 @@ void SwapChain::InitializeImageViews()
 
 void SwapChain::InitializeDepthBuffer()
 {
-	VkFormat depthFormat = SelectDepthFormat();
+	depthImage = std::make_unique<Texture2D>(instance, extent.width, extent.height, Texture2D::Type::Static, Texture2D::Format::Depth);
-	Image::InitializeImage(instance, extent.width, extent.height, depthFormat, VK_IMAGE_TILING_OPTIMAL, VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &depthImage, &depthImageMemory);
-	Image::TransitionImageLayout(instance, depthImage, depthFormat, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
-
-  depthImageView = Image::InitializeImageView(instance, depthImage, depthFormat, VK_IMAGE_ASPECT_DEPTH_BIT);
 }
 
 void SwapChain::InitializeRenderPass()
@@ -202,7 +222,7 @@ void SwapChain::InitializeRenderPass()
 	colorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
 
 	VkAttachmentDescription depthAttachment{};
-	depthAttachment.format = SelectDepthFormat();
+	depthAttachment.format = Image::SelectDepthFormat(instance);
 	depthAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
 	depthAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
 	depthAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
@@ -252,7 +272,7 @@ void SwapChain::InitializeFramebuffers()
 
 	for (size_t i = 0; i < imageViews.size(); ++i)
 	{
-		std::vector<VkImageView> attachments{imageViews[i], depthImageView};
+		std::vector<VkImageView> attachments{imageViews[i], depthImage->GetImageView()};
 
 		VkFramebufferCreateInfo createInfo{};
 		createInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
@@ -269,9 +289,6 @@ void SwapChain::InitializeFramebuffers()
 
 void SwapChain::Destroy()
 {
-	vkDestroyImage(instance.GetDevice(), depthImage, nullptr);
-  vkFreeMemory(instance.GetDevice(), depthImageMemory, nullptr);
-	vkDestroyImageView(instance.GetDevice(), depthImageView, nullptr);
 	for (auto&& framebuffer : framebuffers)
 	{
 		vkDestroyFramebuffer(instance.GetDevice(), framebuffer, nullptr);
@@ -295,29 +312,6 @@ VkSurfaceFormatKHR SwapChain::SelectSwapSurfaceFormat(const std::vector<VkSurfac
 	return availableFormats[0];
 }
 
-VkFormat SwapChain::SelectDepthFormat()
-{
-	return SelectSupportedFormat({VK_FORMAT_D32_SFLOAT, VK_FORMAT_D32_SFLOAT_S8_UINT, VK_FORMAT_D24_UNORM_S8_UINT}, VK_IMAGE_TILING_OPTIMAL, VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT);
-}
-
-VkFormat SwapChain::SelectSupportedFormat(const std::vector<VkFormat>& candidates, VkImageTiling tiling, VkFormatFeatureFlags features)
-{
-  for (VkFormat format : candidates) 
-	{
-    VkFormatProperties properties;
-    vkGetPhysicalDeviceFormatProperties(instance.GetPhysicalDevice(), format, &properties);
-    if(tiling == VK_IMAGE_TILING_LINEAR && (properties.linearTilingFeatures & features) == features)
-    {
-      return format;
-    }
-    else if (tiling == VK_IMAGE_TILING_OPTIMAL && (properties.optimalTilingFeatures & features) == features)
-    {
-      return format;
-    }
-  }
-	throw std::runtime_error("Failed to select supported format");
-}
-
 VkPresentModeKHR SwapChain::SelectSwapPresentMode(const std::vector<VkPresentModeKHR>& availablePresentModes)
 {
 	return VK_PRESENT_MODE_FIFO_KHR;

Vulkan/src/SwapChain.h

@@ -7,6 +7,8 @@
 #include <GLFW/glfw3.h>
 
 class Instance;
+class CommandBuffer;
+class Texture2D;
 
 struct SwapChainSupportDetails
 {
@@ -24,24 +26,22 @@ class SwapChain final
 private:
   Instance& instance;
 
-  // Created by the class
   VkSwapchainKHR handle;
   VkRenderPass renderPass;
   VkFormat imageFormat;
   VkExtent2D extent;
-  VkImage depthImage;
+  std::unique_ptr<Texture2D> depthImage;
-  VkImageView depthImageView;
-  VkDeviceMemory depthImageMemory;
   std::vector<VkImageView> imageViews;
   std::vector<VkImage> images;
   std::vector<VkFramebuffer> framebuffers;
-
   uint32_t  imageIndex;
 
 public:
   SwapChain(Instance& instance);
   ~SwapChain();
 
+  void BeginFrameBuffer(const CommandBuffer& commandBuffer) const;
+  void EndFrameBuffer(const CommandBuffer& commandBuffer) const;
   VkSwapchainKHR GetHandle() const;
   VkRenderPass GetRenderPass() const;
   VkExtent2D GetExtent() const;
@@ -60,8 +60,6 @@ private:
   void Destroy();
 
   VkSurfaceFormatKHR SelectSwapSurfaceFormat(const std::vector<VkSurfaceFormatKHR>& availableFormats);
-  VkFormat SelectDepthFormat();
-  VkFormat SelectSupportedFormat(const std::vector<VkFormat>& candidates, VkImageTiling tiling, VkFormatFeatureFlags features);
   VkPresentModeKHR SelectSwapPresentMode(const std::vector<VkPresentModeKHR>& availablePresentModes);
   VkExtent2D SelectSwapExtent(GLFWwindow* window, const VkSurfaceCapabilitiesKHR& capabilities);
 };

Vulkan/src/Texture2D.cpp

@@ -0,0 +1,150 @@
+#include "Texture2D.h"
+
+#define STB_IMAGE_IMPLEMENTATION
+#include <stb/stb_image.h>
+
+Texture2D::Texture2D(Instance& instance, const std::string& filename)
+  : instance{instance}, type{Type::Static}, format{Format::Image}
+{
+  InitializeTextureImage(filename);
+  InitializeSampler();
+}
+
+Texture2D::Texture2D(Instance& instance, int width, int height, Type type, Format format)
+  : instance{instance}, type{type}, format{format}
+{
+  InitializeTexture(width, height);
+  InitializeSampler();
+}
+
+Texture2D::~Texture2D()
+{
+  for(auto&& image : images)
+    vkDestroyImage(instance.GetDevice(), image, nullptr);
+  for(auto&& imageMemory : imageMemories)
+    vkFreeMemory(instance.GetDevice(), imageMemory, nullptr);
+  for(auto&& imageView : imageViews)
+    vkDestroyImageView(instance.GetDevice(), imageView, nullptr);
+  vkDestroySampler(instance.GetDevice(), sampler, nullptr);
+}
+
+VkDescriptorImageInfo Texture2D::GetDescriptorImageInfo(int index) const
+{
+  VkDescriptorImageInfo imageInfo{};
+  imageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+  imageInfo.sampler = sampler;
+
+  switch (type) {
+  case Type::Static:
+    imageInfo.imageView = imageViews.front();
+    break;
+  case Type::Dynamic:
+    CP_ASSERT(index >= 0 && index < imageViews.size(), "GetDescriptorImageInfo : index out of bound for dynamic texture");
+    imageInfo.imageView = imageViews[index];
+    break;
+  default:
+    CP_ABORT("GetDescriptorImageInfo : Unreachable switch case");
+  }
+
+  return imageInfo;
+}
+
+VkImageView Texture2D::GetImageView() const
+{
+  CP_ASSERT(type == Type::Static, "GetImageView : Texture2D is not static");
+  return imageViews.front();
+}
+
+VkImageView Texture2D::GetImageView(int index)
+{
+  CP_ASSERT(type == Type::Dynamic && index >= 0 && index < imageViews.size(), "GetImageView : Texture2D is not dynamic or index out of bound for SystemTexture");
+  return imageViews[index];
+}
+
+void Texture2D::InitializeTextureImage(const std::string& filename)
+{
+  int texWidth;
+  int texHeight;
+  int texChannels;
+  stbi_uc* pixels = stbi_load(filename.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
+
+  CP_ASSERT(pixels, "InitializeTextureImage : Failed to load texture image");
+
+  VkDeviceSize bufferSize = texWidth * texHeight * 4;
+  Buffer stagingBuffer{instance, VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, bufferSize, 1};
+  void* data = stagingBuffer.Map();
+  memcpy(data, pixels, bufferSize);
+  stagingBuffer.Unmap();
+  stbi_image_free(pixels);
+
+  images.resize(1);
+  imageMemories.resize(1);
+  imageViews.resize(1);
+  Image::InitializeImage(instance, texWidth, texHeight, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_TILING_OPTIMAL, VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &images.front(), &imageMemories.front());
+  Image::TransitionImageLayout(instance, images.front(), VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
+  Image::CopyBufferToImage(instance, stagingBuffer, images.front(), texWidth, texHeight);
+  Image::TransitionImageLayout(instance, images.front(), VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
+  imageViews[0] = Image::InitializeImageView(instance, images.front(), VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_ASPECT_COLOR_BIT);
+}
+
+void Texture2D::InitializeTexture(int width, int height)
+{
+  int count = 1;
+  if (type == Type::Dynamic)
+    count = instance.GetMaxFramesInFlight();
+  images.resize(count);
+  imageMemories.resize(count);
+  imageViews.resize(count);
+  for (size_t i = 0; i < images.size(); i++)
+  {
+    switch (format)
+    {
+    case Format::Color:
+    {
+      Image::InitializeImage(instance, width, height, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_TILING_OPTIMAL, VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &images[i], &imageMemories[i]);
+      // Image::TransitionImageLayout(instance, images[i], VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
+      imageViews[i] = Image::InitializeImageView(instance, images[i], VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_ASPECT_COLOR_BIT);
+      break;
+    }
+    case Format::Depth:
+    {
+      VkFormat depthFormat = Image::SelectDepthFormat(instance);
+      Image::InitializeImage(instance, width, height, depthFormat, VK_IMAGE_TILING_OPTIMAL, VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &images[i], &imageMemories[i]);
+      // Image::TransitionImageLayout(instance, images[i], depthFormat, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
+      imageViews[i] = Image::InitializeImageView(instance, images[i], depthFormat, VK_IMAGE_ASPECT_DEPTH_BIT);
+      break;
+    }
+    case Format::Image:
+    {
+      CP_ABORT("InitializeTexture : Image format currently not supported");
+    }
+    default:
+      CP_ABORT("InitializeTexture : Unreachable switch case");
+    }
+  }
+}
+
+void Texture2D::InitializeSampler()
+{
+  VkPhysicalDeviceProperties properties{};
+  vkGetPhysicalDeviceProperties(instance.GetPhysicalDevice(), &properties);
+
+  VkSamplerCreateInfo createInfo{};
+  createInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
+  createInfo.magFilter = VK_FILTER_LINEAR;
+  createInfo.minFilter = VK_FILTER_LINEAR;
+  createInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
+  createInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
+  createInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
+  createInfo.anisotropyEnable = VK_TRUE;
+  createInfo.maxAnisotropy = properties.limits.maxSamplerAnisotropy;
+  createInfo.unnormalizedCoordinates = VK_FALSE;
+  createInfo.compareEnable = VK_FALSE;
+  createInfo.compareOp = VK_COMPARE_OP_ALWAYS;
+  createInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
+  createInfo.mipLodBias = 0.0f;
+  createInfo.minLod = 0.0f;
+  createInfo.maxLod = 0.0f;
+
+  CP_VK_ASSERT(vkCreateSampler(instance.GetDevice(), &createInfo, nullptr, &sampler), "InitializeSampler : Failed to initialize texture sampler");
+}

Vulkan/src/Texture2D.h

@@ -6,110 +6,40 @@
 #include "Image.h"
 #include "Instance.h"
 
-#define STB_IMAGE_IMPLEMENTATION
+// TODO: Separate Texture2D and Framebuffer Attachments
-#include <stb/stb_image.h>
-
 class Texture2D
 {
   CP_DELETE_COPY_AND_MOVE_CTOR(Texture2D);
+public:
+  enum class Type
+  {
+    Static, Dynamic 
+  };
+
+  enum class Format
+  {
+    Image, Color, Depth
+  };
 private:
   Instance& instance;
 
-  VkImage image;
+  std::vector<VkImage> images;
-  VkDeviceMemory imageMemory;
+  std::vector<VkDeviceMemory> imageMemories;
-  VkImageView imageView;
+  std::vector<VkImageView> imageViews;
   VkSampler sampler;
+  Type type;
+  Format format;
 public:
-  Texture2D(Instance& instance, const std::string& filename)
+  Texture2D(Instance& instance, const std::string& filename);
-    : instance{instance}
+  Texture2D(Instance& instance, int width, int height, Type type, Format format);
-  {
+  ~Texture2D();
-    InitializeTextureImage(filename);
-    InitializeSampler();
-  }
 
-  ~Texture2D()
+  VkDescriptorImageInfo GetDescriptorImageInfo(int index) const;
-  {
+  VkImageView GetImageView() const;
-    vkDestroyImage(instance.GetDevice(), image, nullptr);
+  VkImageView GetImageView(int index);
-    vkFreeMemory(instance.GetDevice(), imageMemory, nullptr);
-    vkDestroyImageView(instance.GetDevice(), imageView, nullptr);
-    vkDestroySampler(instance.GetDevice(), sampler, nullptr);
-  }
-
-  VkDescriptorImageInfo GetDescriptorImageInfo() const
-  {
-    VkDescriptorImageInfo imageInfo{};
-    imageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-    imageInfo.imageView = imageView;
-    imageInfo.sampler = sampler;
-
-    return imageInfo;
-  }
 private:
-  void InitializeTextureImage(const std::string& filename)
+  void InitializeTextureImage(const std::string& filename);
-  {
+  void InitializeTexture(int width, int height);
-    int texWidth;
+  void InitializeSampler();
-    int texHeight;
-    int texChannels;
-    stbi_uc* pixels = stbi_load(filename.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
-
-    CP_ASSERT(pixels, "Failed to load texture image");
-
-    VkDeviceSize bufferSize = texWidth * texHeight * 4;
-    Buffer stagingBuffer{instance, VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, bufferSize, 1};
-    void* data = stagingBuffer.Map();
-    memcpy(data, pixels, bufferSize);
-    stagingBuffer.Unmap();
-    stbi_image_free(pixels);
-
-    Image::InitializeImage(instance, texWidth, texHeight, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_TILING_OPTIMAL, VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &image, &imageMemory);
-    Image::TransitionImageLayout(instance, image, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
-    Image::CopyBufferToImage(instance, stagingBuffer, image, texWidth, texHeight);
-    Image::TransitionImageLayout(instance, image, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
-    imageView = Image::InitializeImageView(instance, image, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_ASPECT_COLOR_BIT);
-  }
-
-  void InitializeSampler()
-  {
-    VkPhysicalDeviceProperties properties{};
-    vkGetPhysicalDeviceProperties(instance.GetPhysicalDevice(), &properties);
-
-    VkSamplerCreateInfo createInfo{};
-    createInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
-    createInfo.magFilter = VK_FILTER_LINEAR;
-    createInfo.minFilter = VK_FILTER_LINEAR;
-    createInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
-    createInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
-    createInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
-    createInfo.anisotropyEnable = VK_TRUE;
-    createInfo.maxAnisotropy = properties.limits.maxSamplerAnisotropy;
-    createInfo.unnormalizedCoordinates = VK_FALSE;
-    createInfo.compareEnable = VK_FALSE;
-    createInfo.compareOp = VK_COMPARE_OP_ALWAYS;
-    createInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
-    createInfo.mipLodBias = 0.0f;
-    createInfo.minLod = 0.0f;
-    createInfo.maxLod = 0.0f;
-
-    CP_VK_ASSERT(vkCreateSampler(instance.GetDevice(), &createInfo, nullptr, &sampler), "Failed to initialize texture sampler");
-  }
-
-  VkImageView CreateImageView(VkImage image)
-  {
-    VkImageView imageView;
-    VkImageViewCreateInfo createInfo{};
-    createInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
-    createInfo.image = image;
-    createInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
-    createInfo.format = VK_FORMAT_R8G8B8A8_SRGB;
-    createInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-    createInfo.subresourceRange.baseMipLevel = 0;
-    createInfo.subresourceRange.levelCount = 1;
-    createInfo.subresourceRange.baseArrayLayer = 0;
-    createInfo.subresourceRange.layerCount = 1;
-    CP_VK_ASSERT(vkCreateImageView(instance.GetDevice(), &createInfo, nullptr, &imageView), "Failed to initialize ImageView");
-
-    return imageView;
-  }
-
 };
 

Vulkan/src/VertexBuffer.h

@@ -22,7 +22,7 @@ public:
     }
   }
 
-  void Bind(VkCommandBuffer commandBuffer) override
+  void Bind(const CommandBuffer& commandBuffer) override
   {
     std::vector<VkBuffer> buffers{bindingOffsets.size(), handle};
     vkCmdBindVertexBuffers(commandBuffer, 0, bindingOffsets.size(), buffers.data(), bindingOffsets.data());

Vulkan/src/VertexPassthrough.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <glm/glm.hpp>
+#include <vulkan/vulkan.hpp>
+#include "VertexDescriptor.h"
+
+struct VertexPassthrough {
+	glm::vec2 texCoord;
+
+  static VertexDescriptor GetDescriptor()
+  {
+    VertexDescriptor descriptor{};
+    descriptor.AddAttribute<VertexPassthrough>(0, 0, VK_FORMAT_R32G32_SFLOAT, offsetof(VertexPassthrough , texCoord));
+    return descriptor;
+  }
+};

Vulkan/src/main.cpp

@@ -1,6 +1,7 @@
 #include "Buffer.h"
 #include "DescriptorPool.h"
 #include "DescriptorSet.h"
+#include "Framebuffer.h"
 #include "IndexBuffer.h"
 #include "Instance.h"
 #include "Pipeline.h"
@@ -9,6 +10,7 @@
 #include "UniformBuffer.h"
 #include "Vertex.h"
 #include "VertexBuffer.h"
+#include "VertexPassthrough.h"
 
 #include <GLFW/glfw3.h>
 #include <chrono>
@@ -20,13 +22,13 @@
 #include <vector>
 
 const std::vector<Vertex> vertices = {
-	Vertex{{-0.5f, 0.5f, -0.5f}, {1.0f, 0.0f, 0.0f}, {0.0f, 0.0f}},
+  Vertex{{-0.5f, 0.5f, -0.5f}, {1.0f, 0.0f, 0.0f}, {0.0f, 0.0f}},
-	Vertex{{ 0.5f, 0.5f, -0.5f}, {0.0f, 1.0f, 0.0f}, {1.0f, 0.0f}},
+  Vertex{{ 0.5f, 0.5f, -0.5f}, {0.0f, 1.0f, 0.0f}, {1.0f, 0.0f}},
-	Vertex{{ 0.5f, 0.5f,  0.5f}, {0.0f, 0.0f, 1.0f}, {1.0f, 1.0f}},
+  Vertex{{ 0.5f, 0.5f,  0.5f}, {0.0f, 0.0f, 1.0f}, {1.0f, 1.0f}},
   Vertex{{-0.5f, 0.5f,  0.5f}, {1.0f, 1.0f, 1.0f}, {0.0f, 1.0f}},
-	Vertex{{-0.5f, 0.0f, -0.5f}, {1.0f, 0.0f, 0.0f}, {0.0f, 0.0f}},
+  Vertex{{-0.5f, 0.0f, -0.5f}, {1.0f, 0.0f, 0.0f}, {0.0f, 0.0f}},
-	Vertex{{ 0.5f, 0.0f, -0.5f}, {0.0f, 1.0f, 0.0f}, {1.0f, 0.0f}},
+  Vertex{{ 0.5f, 0.0f, -0.5f}, {0.0f, 1.0f, 0.0f}, {1.0f, 0.0f}},
-	Vertex{{ 0.5f, 0.0f,  0.5f}, {0.0f, 0.0f, 1.0f}, {1.0f, 1.0f}},
+  Vertex{{ 0.5f, 0.0f,  0.5f}, {0.0f, 0.0f, 1.0f}, {1.0f, 1.0f}},
   Vertex{{-0.5f, 0.0f,  0.5f}, {1.0f, 1.0f, 1.0f}, {0.0f, 1.0f}},
 };
 
@@ -35,6 +37,17 @@ const std::vector<uint16_t> indices = {
     4, 5, 6, 6, 7, 4
 };
 
+const std::vector<VertexPassthrough> verticesPassthrough = {
+  VertexPassthrough{{-1.0f, -1.0f}},
+  VertexPassthrough{{ 1.0f, -1.0f}},
+  VertexPassthrough{{ 1.0f,  1.0f}},
+  VertexPassthrough{{-1.0f,  1.0f}},
+};
+
+const std::vector<uint16_t> indicesPassthrough = {
+    0, 1, 2, 2, 3, 0,
+};
+
 struct alignas(64) ShaderUniform
 {
   alignas(16) glm::mat4 projection;
@@ -56,10 +69,17 @@ private:
   std::unique_ptr<IndexBuffer> indexBuffer;
   std::unique_ptr<CommandBuffer> commandBuffer;
 
+  std::unique_ptr<Framebuffer> framebuffer;
+  std::unique_ptr<Pipeline> graphicsPipelinePassthrough;
+  std::unique_ptr<VertexBuffer> vertexBufferPassthrough;
+  std::unique_ptr<IndexBuffer> indexBufferPassthrough;
+  std::unique_ptr<DescriptorSet> descriptorSetPassthrough;
+
 public:
   Application()
   {
     InitializeInstance();
+    InitializeFrameBuffer();
     InitializeGraphicsPipeline();
     InitializeTextureSampler();
     InitializeUniformBuffer();
@@ -94,7 +114,12 @@ private:
 
   void InitializeInstance()
   {
-    instance = std::make_unique<Instance>("Vulkan Tutorial");
+    instance = std::make_unique<Instance>("Copium Engine");
+  }
+
+  void InitializeFrameBuffer()
+  {
+    framebuffer = std::make_unique<Framebuffer>(*instance, instance->GetSwapChain().GetExtent().width, instance->GetSwapChain().GetExtent().height);
   }
 
   void InitializeTextureSampler()
@@ -114,30 +139,44 @@ private:
     descriptorSet = std::make_unique<DescriptorSet>(*instance, *descriptorPool, graphicsPipeline->GetDescriptorSetLayout(0));
     descriptorSet->AddUniform(*shaderUniformBuffer, 0);
     descriptorSet->AddTexture2D(*texture2D, 1);
+
+    descriptorSetPassthrough = std::make_unique<DescriptorSet>(*instance, *descriptorPool, graphicsPipelinePassthrough->GetDescriptorSetLayout(0));
+    descriptorSetPassthrough->AddTexture2D(framebuffer->GetTexture2D(), 0);
   }
 
   void InitializeGraphicsPipeline() 
   {
-    PipelineCreator creator{"res/shaders/shader.vert", "res/shaders/shader.frag"};
+    PipelineCreator creator{framebuffer->GetRenderPass(), "res/shaders/shader.vert", "res/shaders/shader.frag"};
     creator.AddDescriptorSetLayoutBinding(0, 0, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_VERTEX_BIT);
     creator.AddDescriptorSetLayoutBinding(0, 1, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT);
     creator.SetVertexDescriptor(Vertex::GetDescriptor());
     creator.SetCullMode(VK_CULL_MODE_NONE);
     graphicsPipeline = std::make_unique<Pipeline>(*instance, creator);
+
+    PipelineCreator creatorPassthrough{instance->GetSwapChain().GetRenderPass(), "res/shaders/passthrough.vert", "res/shaders/passthrough.frag"};
+    creatorPassthrough.AddDescriptorSetLayoutBinding(0, 0, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_FRAGMENT_BIT);
+    creatorPassthrough.SetVertexDescriptor(VertexPassthrough::GetDescriptor());
+    creatorPassthrough.SetCullMode(VK_CULL_MODE_NONE);
+    graphicsPipelinePassthrough = std::make_unique<Pipeline>(*instance, creatorPassthrough);
   }
 
   void InitializeVertexBuffer()
   {
     vertexBuffer = std::make_unique<VertexBuffer>(*instance, Vertex::GetDescriptor(), vertices.size());
     vertexBuffer->Update(0, (void*)vertices.data());
-	}
+
+    vertexBufferPassthrough = std::make_unique<VertexBuffer>(*instance, VertexPassthrough::GetDescriptor(), verticesPassthrough.size());
+    vertexBufferPassthrough->Update(0, (void*)verticesPassthrough.data());
+  }
 
   void InitializeIndexBuffer()
   {
-		VkDeviceSize bufferSize = sizeof(uint16_t) * indices.size();
     indexBuffer = std::make_unique<IndexBuffer>(*instance, indices.size());
     indexBuffer->UpdateStaging((void*)indices.data());
-	}
+
+    indexBufferPassthrough = std::make_unique<IndexBuffer>(*instance, indicesPassthrough.size());
+    indexBufferPassthrough->UpdateStaging((void*)indicesPassthrough.data());
+  }
   
   void InitializeCommandBuffer()
   {
@@ -151,30 +190,32 @@ private:
     clearValues[0].color = {{0.0f, 0.0f, 0.0f, 1.0f}};
     clearValues[1].depthStencil = {1.0f, 0};
 
-    // TODO: framebuffer->Bind();
-    VkRenderPassBeginInfo renderPassBeginInfo{};
-    renderPassBeginInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
-    renderPassBeginInfo.renderPass = instance->GetSwapChain().GetRenderPass();
-    renderPassBeginInfo.framebuffer = instance->GetSwapChain().GetFramebuffer();
-    renderPassBeginInfo.renderArea.offset = {0, 0};
-    renderPassBeginInfo.renderArea.extent = instance->GetSwapChain().GetExtent();
-    renderPassBeginInfo.clearValueCount = clearValues.size();
-    renderPassBeginInfo.pClearValues = clearValues.data();
-    vkCmdBeginRenderPass(commandBuffer->GetHandle(), &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
 
-    graphicsPipeline->Bind(commandBuffer->GetHandle());
+
+    framebuffer->Bind(*commandBuffer);
+    graphicsPipeline->Bind(*commandBuffer);
 
     UpdateUniformBuffer();
 
-    vertexBuffer->Bind(commandBuffer->GetHandle());
+    vertexBuffer->Bind(*commandBuffer);
-    indexBuffer->Bind(commandBuffer->GetHandle());
+    indexBuffer->Bind(*commandBuffer);
 
     graphicsPipeline->SetDescriptorSet(0, *descriptorSet);
     graphicsPipeline->BindDescriptorSets(commandBuffer->GetHandle());
 
-    indexBuffer->Draw(commandBuffer->GetHandle());
+    indexBuffer->Draw(*commandBuffer);
+    framebuffer->Unbind(*commandBuffer);
 
-    vkCmdEndRenderPass(commandBuffer->GetHandle());
+    instance->GetSwapChain().BeginFrameBuffer(*commandBuffer);
+
+    graphicsPipelinePassthrough->Bind(*commandBuffer);
+    graphicsPipelinePassthrough->SetDescriptorSet(0, *descriptorSetPassthrough);
+    graphicsPipelinePassthrough->BindDescriptorSets(commandBuffer->GetHandle());
+    vertexBufferPassthrough->Bind(*commandBuffer);
+    indexBufferPassthrough->Bind(*commandBuffer);
+    indexBufferPassthrough->Draw(*commandBuffer);
+
+    instance->GetSwapChain().EndFrameBuffer(*commandBuffer);
     commandBuffer->End();
   }
 
@@ -192,24 +233,15 @@ private:
 
     shaderUniformBuffer->Update(shaderUniform);
   }
-
-  VkShaderModule InitializeShaderModule(const std::vector<char>& code)
-  {
-    VkShaderModuleCreateInfo createInfo{};
-    createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
-    createInfo.codeSize = code.size();
-    createInfo.pCode = reinterpret_cast<const uint32_t*>(code.data());
-
-    VkShaderModule shaderModule;
-    CP_VK_ASSERT(vkCreateShaderModule(instance->GetDevice(), &createInfo, nullptr, &shaderModule), "Failed to initialize shader module");
-
-    return shaderModule;
-  }
 };
 
+void func(const int* ptr) {
+  *const_cast<int*>(ptr) = 20;
+}
+
 int main()
 {
-  CP_ASSERT(glfwInit() == GLFW_TRUE, "Failed to initialize the glfw context");
+  CP_ASSERT(glfwInit() == GLFW_TRUE, "main : Failed to initialize the glfw context");
   {
     Application application;
     Timer timer;