Add create comand_pool and command_buffers. Fix CMake file for TestGame

Core/Core/RenderEngine.cpp

@@ -394,7 +394,7 @@ void RenderEngine::create_render_pass()
     VK_CHECK(vkCreateRenderPass(device_, &render_pass_info, nullptr, &render_pass_));
 }
 
-void RenderEngine::create_graphycs_pipeline()
+void RenderEngine::create_graphics_pipeline()
 {
     std::ifstream vertex_shader_file("Shaders/vertex.spv", std::ios::binary);
     if (!vertex_shader_file.is_open())
@@ -550,6 +550,31 @@ void RenderEngine::create_framebuffers()
     }
 }
 
+void RenderEngine::create_command_pool()
+{
+    QueueFamilyIndices queue_family_indices = find_queue_family_indices(physical_device_, surface_);
+    
+    VkCommandPoolCreateInfo command_pool_info{};
+    command_pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
+    command_pool_info.queueFamilyIndex = queue_family_indices.graphycs_family.value();
+    command_pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
+
+    VK_CHECK(vkCreateCommandPool(device_, &command_pool_info, nullptr, &command_pool_));
+}
+
+void RenderEngine::allocate_command_buffers()
+{
+    command_buffers_.resize(MAX_FRAMES_IN_FLIGHT);
+
+    VkCommandBufferAllocateInfo command_buffer_allocate_info{};
+    command_buffer_allocate_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+    command_buffer_allocate_info.commandPool = command_pool_;
+    command_buffer_allocate_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+    command_buffer_allocate_info.commandBufferCount = static_cast<uint32_t>(command_buffers_.size());
+
+    VK_CHECK(vkAllocateCommandBuffers(device_, &command_buffer_allocate_info, command_buffers_.data()));
+}
+
 void RenderEngine::create_surface()
 {
     VK_CHECK(glfwCreateWindowSurface(instance_, window_, nullptr, &surface_));
@@ -569,11 +594,17 @@ window_(window)
     create_swapchain(desired_present_mode);
     create_image_views();
     create_render_pass();
-    create_graphycs_pipeline();
+    create_graphics_pipeline();
 }
 
 RenderEngine::~RenderEngine()
 {
+    if (command_buffers_.size() > 0)
+        vkFreeCommandBuffers(device_, command_pool_, static_cast<uint32_t>(command_buffers_.size()), command_buffers_.data());
+
+    if (command_pool_ != VK_NULL_HANDLE)
+        vkDestroyCommandPool(device_, command_pool_, nullptr);
+        
     for (auto& i : framebuffers_)
         vkDestroyFramebuffer(device_, i, nullptr);
     

Core/Core/RenderEngine.h

@@ -35,6 +35,9 @@ class RenderEngine
 
     static const std::vector<const char*> deviceExtensions;
 
+    const int MAX_FRAMES_IN_FLIGHT = 2;
+    int current_frame_ = 0;
+
     CoreInstance& core_;
     GLFWwindow* window_;
     VkInstance instance_ = VK_NULL_HANDLE;
@@ -52,6 +55,8 @@ class RenderEngine
     VkPipelineLayout pipeline_layout_ = VK_NULL_HANDLE;
     VkPipeline graphycs_pipeline_ = VK_NULL_HANDLE;
     std::vector<VkFramebuffer> framebuffers_;
+    VkCommandPool command_pool_ = VK_NULL_HANDLE;
+    std::vector<VkCommandBuffer> command_buffers_;
 
 #ifdef _DEBUG
     VkResult enable_layer_validation(VkDebugUtilsMessengerCreateInfoEXT* create_info);
@@ -75,8 +80,10 @@ class RenderEngine
     void create_swapchain(VkPresentModeKHR desired_present_mode);
     void create_image_views();
     void create_render_pass();
-    void create_graphycs_pipeline();
+    void create_graphics_pipeline();
     void create_framebuffers();
+    void create_command_pool();
+    void allocate_command_buffers();
     
 public:
     // Can throw the exception

TestGame/CMakeLists.txt

@@ -59,7 +59,6 @@ add_custom_command(
     COMMAND $ENV{VULKAN_SDK}/Bin/glslc.exe
             ${CMAKE_CURRENT_SOURCE_DIR}/Shaders/vertex.vert
             -o ${OUTPUT_PATH}/Shaders/vertex.spv
-    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/Shaders/vertex.vert
     COMMENT "Building vertex shader"
 )
 
@@ -69,6 +68,5 @@ add_custom_command(
     COMMAND $ENV{VULKAN_SDK}/Bin/glslc.exe
             ${CMAKE_CURRENT_SOURCE_DIR}/Shaders/fragment.frag
             -o ${OUTPUT_PATH}/Shaders/fragment.spv
-    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/Shaders/fragment.frag
     COMMENT "Building fragment shader"
 )