VulkanRendererAPI.h

#pragma once
 
#include "krpch.h"
 
#include "Karma/Renderer/RendererAPI.h"
#include "vulkan/vulkan.h"
 
namespace Karma
{
    class VulkanVertexArray;
    class KARMA_API VulkanRendererAPI : public RendererAPI
    {
    public:
        VulkanRendererAPI();
        virtual ~VulkanRendererAPI();
        virtual void SetClearColor(const glm::vec4& color) override;
        virtual void Clear() override;
 
        virtual void BeginScene() override;
        virtual void DrawIndexed(std::shared_ptr<VertexArray> vertexArray) override;
        virtual void EndScene() override;
 
        void AllocateCommandBuffers();
        void RecordCommandBuffers(VkCommandBuffer commandBuffer, uint32_t imageIndex);
        void SubmitCommandBuffers();
        void CreateSynchronicity();
        void ClearVulkanRendererAPI();
        void RemoveSynchronicity();
        void RecreateCommandBuffersPipelineSwapchain();
        void RecreateCommandBuffersAndSwapChain();
 
        // Getters. Depending on detailed implementation of other API (such as OpenGL), we may promote the getter to abstract
        const std::vector<VkCommandBuffer>& GetCommandBuffers() const { return m_commandBuffers; }
        const int& GetMaxFramesInFlight() const { return MAX_FRAMES_IN_FLIGHT; }
        const std::vector<VkFence>& GetFences() const { return m_InFlightFences; }
        const std::vector<VkSemaphore>& GetImageAvailableSemaphores() const { return m_ImageAvailableSemaphores; }
        const std::vector<VkSemaphore> GetRenderFinishedSemaphore() const { return m_RenderFinishedSemaphores; }
 
    private:
        size_t m_CurrentFrame = 0;
 
        std::vector<VkCommandBuffer> m_commandBuffers;
        std::vector<std::shared_ptr<VulkanVertexArray>> m_VulkaVertexArrays;
 
        std::vector<VkSemaphore> m_ImageAvailableSemaphores;
        std::vector<VkSemaphore> m_RenderFinishedSemaphores;
        std::vector<VkFence> m_InFlightFences;
 
        // Number of images (to work upon (CPU side) whilst an image is being rendered (GPU side processing)) + 1
        // Clearly, MAX_FRAMES_IN_FLIGHT shouldn't exceed m_SwapChainImages.size()
        const int MAX_FRAMES_IN_FLIGHT = 2;
 
        bool m_bAllocateCommandBuffers;
    };
}